US4523155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensated automatic output control circuitry for RF signal power amplifiers with wide dynamic range
Assignee: Motorola Solutions Inc
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Filing: 1984-12-17
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Granted: 1985-06-11
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Expires: 2004-12-17
Abstract
Abstract Improved temperature compensated, automatic output control (AOC) circuitry for RF signal power amplifiers is described that maintains the output power within one-half dB of a selected one of eight power levels varying from nine milliwatts to five watts, a dynamic range of twenty-eight dB. The amplification of the RF signal amplifier is proportional to a drive current signal provided by a current amplifier. A half-wave rectifier is coupled to the output of final amplifiers for generating an output power signal that has a magnitude proportional to the output power. The half-wave rectifier is temperature compensated for and biased by a diode coupled to the rectifier by one resistor and coupled to supply voltage by another resistor. The output power voltage is further coupled to an amplifier having an amplification factor selected by level control signals. The amplified output power signal is coupled to a comparator which varies the drive current provided by the current amplifier in response to the voltage difference between the amplified output power signal and a reference voltage.
Inventors
- 👤 Thomas J. Walczak
- 👤 Richard M. Stone
- 👤 Gary M. Cristiano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:54
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3036; H03G3/3042
Claims Analysis
Total Claims: 105
Claim 1
Independent Claim
197 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is proportional to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature; means coupled to the level control signals for selecting one of a plurality of amplification factors in response to the level control signals; means coupled to the generating means for amplifying the output power signal by the selected amplification factor; and means coupled to the amplifying means for varying the magnitude of the current control signal in response to the difference between the magnitude of the amplified output power signal and a predetermined magnitude.
Claim 2
Dependent Claim
197 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is proportional to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature; means coupled to the level control signals for selecting one of a plurality of amplification factors in response to the level control signals; means coupled to the generating means for amplifying the output power signal by the selected amplification factor; and means coupled to the amplifying means for varying the magnitude of the current control signal in response to the difference between the magnitude of the amplified output power signal and a predetermined magnitude.
Claim 3
Dependent Claim
48 words
The control circuitry according to claim 1, wherein said amplifying means as a preselected amplification factor and said selecting means further includes means coupled to the generating means for attenuating the output power signal in response to the level control signal for selecting one of the amplification factors.
Claim 4
Dependent Claim
60 words
The control circuitry according to claim 1, wherein said amplifying means includes first and second impedance means for determining the amplification factor of the amplifying means, and wherein said selecting means further includes means for varying one of the first or second impedance means in response to the level control signals for selecting the amplification factor of the amplifying means.
Claim 5
Dependent Claim
30 words
The control circuitry according to claim 1, wherein said generating means includes means for half-wave rectifying the RF signal from the RF signal amplifier to produce the output power signal.
Claim 6
Dependent Claim
127 words
The control circuitry according to claim 4, wherein said half-wave rectifying means includes first diode means having a cathode terminal and an anode terminal coupled to the RF signal, and capacitive means coupled between the cathode terminal of the first diode means and signal ground; and wherein the compensating means includes first resistive means having a first terminal and a second terminal coupled to the anode of the first diode means, second diode means having an anode terminal coupled to the first terminal of the first resistive means and a cathode terminal coupled to signal ground, and second resistive means having a first terminal coupled to the second terminal of the first resistive means and a second terminal coupled to a voltage signal from a voltage source.
Claim 7
Dependent Claim
201 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a pluraity of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is proportional to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature; means coupled to the generating means and level control signals for attenuating the output power signal by an attenuation factor selected by the level control signals; means coupled to the attenuating means for amplifying the attenuated output power signal by a predetermined amplification factor; and means coupled to the amplifying means for varying the magnitude of the current control signal in response to the difference between the magnitude of the amplified output power signal and a predetermined magnitude.
Claim 8
Dependent Claim
201 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a pluraity of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is proportional to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature; means coupled to the generating means and level control signals for attenuating the output power signal by an attenuation factor selected by the level control signals; means coupled to the attenuating means for amplifying the attenuated output power signal by a predetermined amplification factor; and means coupled to the amplifying means for varying the magnitude of the current control signal in response to the difference between the magnitude of the amplified output power signal and a predetermined magnitude.
Claim 9
Dependent Claim
58 words
The control circuitry according to claim 6, wherein said attenuating means includes resistive divider means including series resistor means coupled between the generating means and amplifying means and a plurality shunt resistor means each coupled to the intercoupled series resistive means and the amplifying means and selectively coupled to signal ground in response to the level control signals.
Claim 10
Dependent Claim
59 words
The control circuitry according to claim 6, wherein said amplifying means includes first and second impedance means for determining the amplification factor of the amplifying means, and said amplifying means further includes means for varying one of the first or second impedance means in response to the level control signals for selecting the amplification factor of the amplifying means.
Claim 11
Dependent Claim
30 words
The control circuitry according to claim 6, wherein said generating means includes means for half-wave rectifying the RF signal from the RF signal amplifier to produce the output power signal.
Claim 12
Dependent Claim
127 words
The control circuitry according to claim 9, wherein said half-wave rectifying means includes first diode means having a cathode terminal and an anode terminal coupled to the RF signal, and capacitive means coupled between the cathode terminal of the first diode means and signal ground; and wherein the compensating means includes first resistive means having a first terminal and a second terminal coupled to the anode of the first diode means, second diode means having an anode terminal coupled to the second terminal of the first resistive means and a cathode terminal coupled to signal ground, and second resistive means having a first terminal coupled to the first terminal of the first resistive means and a second terminal coupled to a voltage signal from a voltage source.
Claim 13
Dependent Claim
168 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature and coupled to the level control signals for adjusting the output power signal by an adjustment factor selected in response to the level control signals; and means responsive to the magnitude of the compensated and adjusted output power signal for producing the current control signal.
Claim 14
Dependent Claim
168 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature and coupled to the level control signals for adjusting the output power signal by an adjustment factor selected in response to the level control signals; and means responsive to the magnitude of the compensated and adjusted output power signal for producing the current control signal.
Claim 15
Dependent Claim
30 words
The control circuitry according to claim 11, wherein said compensating and adjusting means includes means responsive to the level control signals for selecting one of a plurality of adjustment factors.
Claim 16
Dependent Claim
28 words
The control circuitry according to claim 11, wherein said compensating and adjusting means includes means for attenuating the output power signal in response to the selected adjustment factor.
Claim 17
Dependent Claim
46 words
The control circuitry according to claim 13, wherein said attenuating means includes resistive divider means including series resistive means and a plurality of shunt resistive means each coupled to the series resistive means and selectively coupled to signal ground in response to the level control signals.
Claim 18
Dependent Claim
25 words
The control circuitry according to claim 11, further including amplifying means for amplifying the compensated and adjusted output power signal by a predetermnined amplification factor.
Claim 19
Dependent Claim
41 words
The control circuitry according to claim 15, wherein said amplifying means includes variable impedance means for determining the amplification factor thereof, and wherein said control circuitry further includes means for varying said impedance means in response to the selected adjustment factor.
Claim 20
Dependent Claim
39 words
The control circuitry according to claim 11, wherein said producing means includes means for varying the current control signal in response to the difference between the magnitude of the compensated and adjusted output power signal and a predetermined magnitude.
Claim 21
Dependent Claim
30 words
The control circuitry according to claim 11, wherein said generating means includes means for half-wave rectifying the RF signal from the RF signal amplifier to produce the output power signal.
Claim 22
Dependent Claim
131 words
The control circuitry according to claim 18, wherein said half-wave rectifying means includes first diode means having a cathode terminal and having an anode terminal coupled to the RF signal, and capacitive means coupled between the cathode terminal of the first diode means and signal ground; and said compensating and adjusting means further includes first resistive means having a first terminal and having a second terminal coupled to the anode of the first diode means, second diode means having an anode terminal coupled to the first terminal of the first resistive means and a cathode terminal coupled to signal ground, and second resistive means having a first terminal coupled to the first terminal of the first resistive means and a second terminal coupled to a voltage signal from a voltage source.
Claim 23
Dependent Claim
166 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature and coupled to the level control signals for attenuating the output power signal by an attenuation factor selected by the level control signals; and means responsive to the magnitude of the compensated and attenuated output power signal for producing the current control signal.
Claim 24
Dependent Claim
166 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature and coupled to the level control signals for attenuating the output power signal by an attenuation factor selected by the level control signals; and means responsive to the magnitude of the compensated and attenuated output power signal for producing the current control signal.
Claim 25
Dependent Claim
30 words
The control circuitry according to claim 20, wherein said compensating and attenuating means includes means responsive to the level control signals for selecting one of a plurality of attenuation factors.
Claim 26
Dependent Claim
48 words
The control circuitry according to claim 20, wherein said compensating and attenuating means includes resistive divider means including series resistive means and a plurality of shunt resistive means each coupled to the series resistive means and selectively coupled to signal ground in response to the level control signals.
Claim 27
Dependent Claim
25 words
The control circuitry according to claim 20, further including amplifying means for amplifying the compensated and attenuated output power signal by a predetermined amplification factor.
Claim 28
Dependent Claim
40 words
The control circuitry according to claim 23, wherein said amplifying means includes variable impedance means for determining the amplification factor thereof, and said control circuitry further includes means for varying said impedance means in response to the selected attenuation factor.
Claim 29
Dependent Claim
39 words
The control circuitry according to claim 20, wherein said producing means includes means for varying the current control signal in response to the difference between the magnitude of the compensated and attenuated output power signal and a predetermined magnitude.
Claim 30
Dependent Claim
30 words
The control circuitry according to claim 20, wherein said generating means includes means for half-wave rectifying the RF signal from the RF signal amplifier to produce the output power signal.
Claim 31
Dependent Claim
131 words
The control circuitry according to claim 26, wherein said half-wave rectifying means includes first diode means having a cathode terminal having and an anode terminal coupled to the RF signal, and capacitive means coupled between the cathode terminal of the first diode means and signal ground; and said compensating and attenuating means further includes first resistive means having a first terminal and having a second terminal coupled to the anode of the first diode means, second diode means having an anode terminal coupled to the first terminal of the first resistive means and a cathode terminal coupled to signal ground, and second resistive means having a first terminal coupled to the first terminal of the first resistive means and a second terminal coupled to a voltage signal from a voltage source.
Claim 32
Dependent Claim
125 words
Amplifying circuitry for producing a plurality of levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: means responsive to a current control signal for amplifying the RF signal; means coupled to the amplifying means for generating an output power signal having a magnitude that is related to the magnitude of the amplified RF signal therefrom; means coupled to the generating means for compensating the output power signal for variations in temperature and coupled to the level control signals for adjusting the output power signal by an adjustment factor selected by the level control signals; and means responsive to the magnitude of the compensated and adjusted output power signal for producing the current control signal.
Claim 33
Dependent Claim
125 words
Amplifying circuitry for producing a plurality of levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: means responsive to a current control signal for amplifying the RF signal; means coupled to the amplifying means for generating an output power signal having a magnitude that is related to the magnitude of the amplified RF signal therefrom; means coupled to the generating means for compensating the output power signal for variations in temperature and coupled to the level control signals for adjusting the output power signal by an adjustment factor selected by the level control signals; and means responsive to the magnitude of the compensated and adjusted output power signal for producing the current control signal.
Claim 34
Dependent Claim
30 words
The control circuitry according to claim 28, wherein said compensating and adjusting means includes means responsive to the level control signals for selecting one of a plurality of adjustment factors.
Claim 35
Dependent Claim
28 words
The control circuitry according to claim 28, wherein said compensating and adjusting means includes means for attenuating the output power signal in response to the selected adjustment factor.
Claim 36
Dependent Claim
46 words
The control circuitry according to claim 30, wherein said attenuating means includes resistive divider means including series resistive means and a plurality of shunt resistive means each coupled to the series resistive means and selectively coupled to signal ground in response to the level control signals.
Claim 37
Dependent Claim
25 words
The control circuitry according to claim 28, further including amplifying means for amplifying the compensated and adjusted output power signal by a predetermined amplification factor.
Claim 38
Dependent Claim
41 words
The control circuitry according to claim 32, wherein said amplifying means includes variable impedance means for determining the amplification factor thereof, and wherein said control circuitry further includes means for varying said impedance means in response to the selected adjustment factor.
Claim 39
Dependent Claim
39 words
The control circuitry according to claim 28, wherein said producing means includes means for varying the current control signal in response to the difference between the magnitude of the compensated and adjusted output power signal and a predetermined magnitude.
Claim 40
Dependent Claim
29 words
The control circuitry according to claim 28, wherein said generating means includes means for half-wave rectifying the RF signal from the amplifying means to produce the output power signal.
Claim 41
Dependent Claim
131 words
The control circuitry according to claim 35, wherein said half-wave rectifying means includes first diode means having a cathode terminal and having an anode terminal coupled to the RF signal, and capacitive means coupled between the cathode terminal of the first diode means and signal ground; and said compensating and adjusting means further includes first resistive means having a first terminal and having a second terminal coupled to the anode of the first diode means, second diode means having an anode terminal coupled to the first terminal of the first resistive means and a cathode terminal coupled to signal ground, and second resistive means having a first terminal coupled to the first terminal of the first resistive means and a second terminal coupled to a voltage signal from a voltage source.
Claim 42
Dependent Claim
102 words
Circuitry for controlling the magnitude of a radio frequency (RF) signal in response to control signals comprising: means, having variable output, for amplifying the RF signal to an output magnitude; means for generating an output power signal having a magnitude related to said RF signal output magnitude; means for compensating said output power signal magnitude for variations in temperature and adjusting said output power signal by an adjustment factor selected by the control signals; and means, responsive to said compensated and adjusted output power signal, for varying said RF signal amplifying means output to produce a corresponding magnitude of the RF signal.
Claim 43
Dependent Claim
102 words
Circuitry for controlling the magnitude of a radio frequency (RF) signal in response to control signals comprising: means, having variable output, for amplifying the RF signal to an output magnitude; means for generating an output power signal having a magnitude related to said RF signal output magnitude; means for compensating said output power signal magnitude for variations in temperature and adjusting said output power signal by an adjustment factor selected by the control signals; and means, responsive to said compensated and adjusted output power signal, for varying said RF signal amplifying means output to produce a corresponding magnitude of the RF signal.
Claim 44
Dependent Claim
30 words
The control circuitry according to claim 37, wherein said compensating and adjusting means includes means responsive to the level control signals for selecting one of a plurality of adjustment factors.
Claim 45
Dependent Claim
28 words
The control circuitry according to claim 37, wherein said compensating and adjusting means includes means for attenuating the output power signal in response to the selected adjustment factor.
Claim 46
Dependent Claim
46 words
The control circuitry according to claim 39, wherein said attenuating means includes resistive divider means including series resistive means and a plurality of shunt resistive means each coupled to the series resistive means and selectively coupled to signal ground in response to the level control signals.
Claim 47
Dependent Claim
25 words
The control circuitry according to claim 37, further including amplifying means for amplifying the compensated and adjusted output power signal by a predetermined amplification factor.
Claim 48
Dependent Claim
41 words
The control circuitry according to claim 41, wherein said amplifying means includes variable impedance means for determining the amplification factor thereof, and wherein said control circuitry further includes means for varying said impedance means in response to the selected adjustment factor.
Claim 49
Dependent Claim
39 words
The control circuitry according to claim 37, wherein said producing means includes means for varying the current control signals in response to the difference between the magnitude of the compensated and adjusted output power signal and a predetermined magnitude.
Claim 50
Dependent Claim
30 words
The control circuitry according to claim 37, wherein said generating means includes means for half-wave rectifying the RF signal from the RF amplifying means to produce the output power signal.
Claim 51
Dependent Claim
131 words
The control circuitry according to claim 44, wherein said half-wave rectifying means includes first diode means having a cathode terminal and having an anode terminal coupled to the RF signal, and capacitive means coupled between the cathode terminal of the first diode means and signal ground; and said compensating and adjusting means further includes first resistive means having a first terminal and having a second terminal coupled to the anode of the first diode means, second diode means having an anode terminal coupled to the first terminal of the first resistive means and a cathode terminal coupled to signal ground, and second resistive means having a first terminal coupled to the first terminal of the first resistive means and a second terminal coupled to a voltage signal from a voltage source.
Claim 52
Dependent Claim
167 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature; means coupled to the level control signals for adjusting the compensated output power signal by an adjustment factor selected in response to the level control signals; and means responsive to the magnitude of the adjusted output power signal for producing the current control signal.
Claim 53
Dependent Claim
167 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature; means coupled to the level control signals for adjusting the compensated output power signal by an adjustment factor selected in response to the level control signals; and means responsive to the magnitude of the adjusted output power signal for producing the current control signal.
Claim 54
Dependent Claim
165 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature; means coupled to the level control signals for attenuating the compensated output power signal by an attenuation factor selected by the level control signals; and means responsive to the magnitude of the attenuated output power signal for producing the current control signal.
Claim 55
Dependent Claim
165 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature; means coupled to the level control signals for attenuating the compensated output power signal by an attenuation factor selected by the level control signals; and means responsive to the magnitude of the attenuated output power signal for producing the current control signal.
Claim 56
Dependent Claim
124 words
Amplifying circuitry for producing a plurality of levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: means responsive to a current control signal for amplifying the RF signal; means coupled to the amplifying means for generating an output power signal having a magnitude that is related to the magnitude of the amplified RF signal therefrom; means coupled to the generating means for compensating the output power signal for variations in temperature; means coupled to the level control signals for adjusting the compensated output power signal by an adjustment factor selected by the level control signals; and means responsive to the magnitude of the adjusted output power signal for producing the current control signal.
Claim 57
Dependent Claim
124 words
Amplifying circuitry for producing a plurality of levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: means responsive to a current control signal for amplifying the RF signal; means coupled to the amplifying means for generating an output power signal having a magnitude that is related to the magnitude of the amplified RF signal therefrom; means coupled to the generating means for compensating the output power signal for variations in temperature; means coupled to the level control signals for adjusting the compensated output power signal by an adjustment factor selected by the level control signals; and means responsive to the magnitude of the adjusted output power signal for producing the current control signal.
Claim 58
Dependent Claim
105 words
Circuitry for controlling the magnitude of a radio frequency (RF) signal in response to control signals, comprising: means, having variable output, for amplifying the RF signal to an output magnitude; means for generating an output power signal having a magnitude related to said RF signal output magnitude; means for compensating said output power signal magnitude for variations in temperature; means for adjusting said compensated output power signal by an adjustment factor selected by the control signals; and means, responsive to said adjusted output power signal, for varying said output of said RF signal amplifying means to produce a corresponding output magnitude of the RF signal.
Claim 59
Dependent Claim
105 words
Circuitry for controlling the magnitude of a radio frequency (RF) signal in response to control signals, comprising: means, having variable output, for amplifying the RF signal to an output magnitude; means for generating an output power signal having a magnitude related to said RF signal output magnitude; means for compensating said output power signal magnitude for variations in temperature; means for adjusting said compensated output power signal by an adjustment factor selected by the control signals; and means, responsive to said adjusted output power signal, for varying said output of said RF signal amplifying means to produce a corresponding output magnitude of the RF signal.
Claim 60
Dependent Claim
193 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier, and compensating the output power signal for variations in temperature; means coupled to the level control signals for selecting one of a plurality of amplification factors in response to the level control signals; means coupled to the generating and compensating means for amplifying the output power signal by the selected amplification factor; and means coupled to the amplifying means for varying the magnitude of the current control signal in response to the difference between the magnitude of the amplified output power signal and a predetermined magnitude.
Claim 61
Dependent Claim
193 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier, and compensating the output power signal for variations in temperature; means coupled to the level control signals for selecting one of a plurality of amplification factors in response to the level control signals; means coupled to the generating and compensating means for amplifying the output power signal by the selected amplification factor; and means coupled to the amplifying means for varying the magnitude of the current control signal in response to the difference between the magnitude of the amplified output power signal and a predetermined magnitude.
Claim 62
Dependent Claim
48 words
The control circuitry according to claim 50, wherein said amplifying means has a preselected amplification factor and said selecting means further includes means coupled to the generating means for attenuating the output power signal in response to the level control signals for selecting one of the amplification factors.
Claim 63
Dependent Claim
60 words
The control circuitry according to claim 50, wherein said amplifying means includes first and second impedance means for determining the amplification factor of the amplifying means, and wherein said selecting means further includes means for varying one of the first or second impedance means in response to the level control signals for selecting the amplification factor of the amplifying means.
Claim 64
Dependent Claim
29 words
The control circuitry according to claim 50, wherein said generating means includes means for rectifying the RF signal from the RF signal amplifier to produce the output power signal.
Claim 65
Dependent Claim
130 words
The control circuitry according to claim 53, wherein said rectifying means includes first diode means having a cathode terminal and an anode terminal coupled to the RF signal, and capacitive means coupled between the cathode terminal of the first diode means and signal ground; and first resistive means having a first terminal and a second terminal coupled to the anode of the first diode means, second diode means having an anode terminal coupled to the first terminal of the first resistive means and a cathode terminal coupled to signal ground, and second resistive means having a first terminal coupled to the second terminal of the first resistive means and a second terminal coupled to a voltage signal from a voltage source thereby supplying a bias for said first diode means.
Claim 66
Dependent Claim
193 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier, and compensating the output power signal for variations in temperature; means coupled to the generating and compensating means for attenuating the output power signal by an attenuation factor selected by the level control signals; means coupled to the attenuating means for amplifying the attenuated output power signal by a predetermined amplification factor; and means coupled to the amplifying means for varying the magnitude of the current control signal in response to the difference between the magnitude of the amplified output power signal and a predetermined magnitude.
Claim 67
Dependent Claim
193 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier, and compensating the output power signal for variations in temperature; means coupled to the generating and compensating means for attenuating the output power signal by an attenuation factor selected by the level control signals; means coupled to the attenuating means for amplifying the attenuated output power signal by a predetermined amplification factor; and means coupled to the amplifying means for varying the magnitude of the current control signal in response to the difference between the magnitude of the amplified output power signal and a predetermined magnitude.
Claim 68
Dependent Claim
52 words
The control circuitry according to claim 55, wherein said attenuating means includes resistive divider means including series resistor means coupled between the generating means and amplifying means and a plurality shunt resistor means selectively coupled among said series resistor means, amplifying means, and signal ground in response to the level control signals.
Claim 69
Dependent Claim
59 words
The control circuitry according to claim 55, wherein said amplifying means includes first and second impedance means for determining the amplification factor of the amplifying means, and said amplifying means further includes means for varying one of the first or second impedance means in response to the level control signals for selecting the amplification factor of the amplifying means.
Claim 70
Dependent Claim
29 words
The control circuitry according to claim 55, wherein said generating means includes means for rectifying the RF signal from the RF signal amplifier to produce the output power signal.
Claim 71
Dependent Claim
130 words
The control circuitry according to claim 58, wherein said rectifying means includes first diode means having a cathode terminal and an anode terminal coupled to the RF signal, and capacitive means coupled between the cathode terminal of the first diode means and signal ground; and first resistive means having a first terminal and a second terminal coupled to the anode of the first diode means, second diode means having an anode terminal coupled to the first terminal of the first resistive means and a cathode terminal coupled to signal ground, and second resistive means having a first terminal coupled to the second terminal of the first resistive means and a second terminal coupled to a voltage signal from a voltage source thereby supplying a bias for said first diode means.
Claim 72
Dependent Claim
131 words
Amplifying circuitry for producing a plurality of levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: means responsive to a current control signal for amplifying the RF signal; means coupled to the RF amplifying means for generating an output power signal having a magnitude that is related to the magnitude of the amplified RF signal therefrom, and compensating the output power signal for variations in temperature; means coupled to the level control signals for adjusting the output power signal by an adjustment factor selected by the level control signals; means coupled to the adjusting means for amplifying the adjusted output power signal; and means responsive to the magnitude of the amplified output power signal for producing the current control signal.
Claim 73
Dependent Claim
131 words
Amplifying circuitry for producing a plurality of levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: means responsive to a current control signal for amplifying the RF signal; means coupled to the RF amplifying means for generating an output power signal having a magnitude that is related to the magnitude of the amplified RF signal therefrom, and compensating the output power signal for variations in temperature; means coupled to the level control signals for adjusting the output power signal by an adjustment factor selected by the level control signals; means coupled to the adjusting means for amplifying the adjusted output power signal; and means responsive to the magnitude of the amplified output power signal for producing the current control signal.
Claim 74
Dependent Claim
115 words
Circuitry for controlling the magnitude of a radio frequency (RF) signal in response to control signals, comprising: means, having variable output, for amplifying the RF signal to an output magnitude; means for generating an output power signal having a magnitude related to said RF signal output magnitude, and compensating the output power signal for variations in temperature; means for adjusting said output power signal by an adjustment factor selected by the control signals; means coupled to the adjusting means for amplifying the adjusted output power signal; and means, responsive to said amplified output power signal, for varying said output of said RF signal amplifying means to produce a corresponding output magnitude of the RF signal.
Claim 75
Dependent Claim
115 words
Circuitry for controlling the magnitude of a radio frequency (RF) signal in response to control signals, comprising: means, having variable output, for amplifying the RF signal to an output magnitude; means for generating an output power signal having a magnitude related to said RF signal output magnitude, and compensating the output power signal for variations in temperature; means for adjusting said output power signal by an adjustment factor selected by the control signals; means coupled to the adjusting means for amplifying the adjusted output power signal; and means, responsive to said amplified output power signal, for varying said output of said RF signal amplifying means to produce a corresponding output magnitude of the RF signal.
Claim 76
Dependent Claim
145 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature; and means responsive to the magnitude of the output power signal and the level control signals for producing the current control signal.
Claim 77
Dependent Claim
145 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for compensating the output power signal for variations in temperature; and means responsive to the magnitude of the output power signal and the level control signals for producing the current control signal.
Claim 78
Dependent Claim
20 words
Control circuitry in accordance with claim 62 wherein the control circuitry further comprises means for amplifying said output power signal.
Claim 79
Dependent Claim
21 words
Control circuitry in accordance with claim 62 wherein said means for generating an output power signal is a first diode rectifier.
Claim 80
Dependent Claim
50 words
Control circuitry in accordance with claim 64 wherein said means for compensating the output power signal further comprises a second diode resistively coupled to said first diode and a direct current power source whereby temperature variations in said first diode are compensated by direct current bias from said second diode.
Claim 81
Dependent Claim
44 words
Control circuitry in accordance with claim 62 wherein said means for producing the current control signal further comprises means for selecting one of a plurality of resistance values in an attenuation network whereby the current control signal is responsive to the level control signals.
Claim 82
Dependent Claim
32 words
Control circuitry in accordance with claim 62 wherein said means for producing the current control signal further comprises comparing means responsive to the output power signal for generating the current control signal.
Claim 83
Dependent Claim
109 words
Amplifying circuitry for producing and maintaining one of a plurality of predetermined levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: means responsive to a current control signal for amplifying the RF signal; means coupled to the amplifying means for generating an output power signal having a magnitude that is related to the magnitude of the amplified RF signal therefrom; means coupled to the generating means for compensating the output power signal for variations in temperature; and means responsive to the magnitude of the output power signal and the level control signals for producing the current control signal.
Claim 84
Dependent Claim
109 words
Amplifying circuitry for producing and maintaining one of a plurality of predetermined levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: means responsive to a current control signal for amplifying the RF signal; means coupled to the amplifying means for generating an output power signal having a magnitude that is related to the magnitude of the amplified RF signal therefrom; means coupled to the generating means for compensating the output power signal for variations in temperature; and means responsive to the magnitude of the output power signal and the level control signals for producing the current control signal.
Claim 85
Dependent Claim
99 words
Amplifying circuitry in accordance with claim 68 wherein the amplifying circuitry further comprises: means for amplifying said output power signal; first diode means for rectifying the RF signal; second diode means resistively coupled to said first diode means whereby temperature variations in said first diode means are compensated by bias from said second diode means; means for selecting one of a plurality of resistance values in an attenuation network whereby the current control signal is responsive to the level control signals; and means for comparing the output power signal to a predetermined magnitude and generating the current control signal.
Claim 86
Dependent Claim
142 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output signal having a magnitude that is related to the level control signals and the magnitude of the RF signal from the RF signal amplifier; means coupled to said generating means for compensating said output signal for variations in temperature; and means responsive to the magnitude of the output signal for producing the current control signal.
Claim 87
Dependent Claim
142 words
Control circuitry for maintaining the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output signal having a magnitude that is related to the level control signals and the magnitude of the RF signal from the RF signal amplifier; means coupled to said generating means for compensating said output signal for variations in temperature; and means responsive to the magnitude of the output signal for producing the current control signal.
Claim 88
Dependent Claim
19 words
Control circuitry in accordance with claim 70 wherein the control circuitry further comprises means for amplifying said output signal.
Claim 89
Dependent Claim
22 words
Control circuitry in accordance with claim 70 wherein said means for generating an output signal further comprises a first diode means rectifier.
Claim 90
Dependent Claim
46 words
Control circuitry in accordance with claim 72 wherein said means for compensating said output signal further comprises a second diode means coupled to said first diode means whereby temperature variations in said first diode means are compensated by direct current bias from said second diode means.
Claim 91
Dependent Claim
37 words
Control circuitry in accordance with claim 70 wherein said means for generating an output signal further comprises means, responsive to the level control signals, for selecting one of a plurality of resistance values in an attenuation network.
Claim 92
Dependent Claim
111 words
Amplifying circuitry for producing and maintaining one of a plurality of predetermined levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: means responsive to a current control signal for amplifying the RF signal; means coupled to the amplifying means for generating an output signal having a magnitude that is related to the level control signals and the magnitude of the RF signal from the RF signal amplifying means; means coupled to the generating means for compensating the output signal for variations in temperature; and means responsive to the magnitude of the compensated output signal for producing the current control signal.
Claim 93
Dependent Claim
111 words
Amplifying circuitry for producing and maintaining one of a plurality of predetermined levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: means responsive to a current control signal for amplifying the RF signal; means coupled to the amplifying means for generating an output signal having a magnitude that is related to the level control signals and the magnitude of the RF signal from the RF signal amplifying means; means coupled to the generating means for compensating the output signal for variations in temperature; and means responsive to the magnitude of the compensated output signal for producing the current control signal.
Claim 94
Dependent Claim
75 words
Amplifying circuitry in accordance with claim 75 wherein the amplifying circuitry further comprises: means for amplifying said output signal; first diode means for rectifying the RF signal; second diode means resistively coupled to said first diode means whereby temperature variations in said first diode means are compensated by bias from said second diode means; and means, responsive to the level control signals, for selecting one of a plurality of resistance values in an attenuation network.
Claim 95
Dependent Claim
167 words
Control circuitry for establishing the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of contiguous levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for maintaining the output power signal at a magnitude such that the RF signal magnitude is held at the selected level within a predetermined window of accuracy over variations in temperature; and means responsive to the magnitude of the output power signal and the level control signals for producing the current control signal.
Claim 96
Dependent Claim
167 words
Control circuitry for establishing the magnitude of a radio frequency (RF) signal from an RF signal amplifier at one of a plurality of contiguous levels selected by level control signals from a signal source, the amplification of the RF signal amplifier being proportional to a drive current signal provided by current amplifying means, and the current amplifying means varying the magnitude of the drive current signal in response to a current control signal, said control circuitry comprising: means coupled to the RF signal amplifier for generating an output power signal having a magnitude that is related to the magnitude of the RF signal from the RF signal amplifier; means coupled to the generating means for maintaining the output power signal at a magnitude such that the RF signal magnitude is held at the selected level within a predetermined window of accuracy over variations in temperature; and means responsive to the magnitude of the output power signal and the level control signals for producing the current control signal.
Claim 97
Dependent Claim
20 words
Control circuitry in accordance with claim 77 wherein the control circuitry further comprises means for amplifying said output power signal.
Claim 98
Dependent Claim
19 words
Control circuitry in accordance with claim 77 wherein said output power signal generating means is a first diode rectifier.
Claim 99
Dependent Claim
59 words
Control circuitry in accordance with claim 77 wherein said means for maintaining the RF signal magnitude further comprises a second diode resistively coupled to said first diode and a direct current power source thereby compensating temperature variations in said first diode by direct current bias from said second diode and maintaining the RF signal magnitude at the selected level.
Claim 100
Dependent Claim
43 words
Control circuitry in accordance with claim 77 wherein said means for producing the current control signal further comprises means for selecting one of a plurality of resistors in an attenuation network whereby the current control signal is responsive to the level control signal.
Claim 101
Dependent Claim
35 words
Control circuitry in accordance with claim 77 wherein said means for producing the current control signal further comprises means for comparing the output power signal to a predetermined magnitude and producing the current control signal.
Claim 102
Dependent Claim
156 words
Amplifying circuitry for producing a plurality of contiguous levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: an RF amplifier responsive to a current control signal for amplifying the RF signal; a rectifier, coupled to said RF amplifier, for generating an output power signal having a magnitude that is related to the magnitude of the amplified RF signal; a thermally variable element, coupled to the rectifier, for maintaining the output power signal at a magnitude such that the RF signal magnitude is held at the selected level within a predetermined window of accuracy; an output power signal amplifier, coupled to said half wave rectifier for amplifying and comparing the output power signal to a reference magnitude to produce said current control signal; and an attenuator, coupled to said output power signal amplifier, for adjusting said current control signal in accordance with the level control signals.
Claim 103
Dependent Claim
156 words
Amplifying circuitry for producing a plurality of contiguous levels of a radio frequency (RF) signal selected by level control signals from a signal source, said amplifying circuitry comprising: an RF amplifier responsive to a current control signal for amplifying the RF signal; a rectifier, coupled to said RF amplifier, for generating an output power signal having a magnitude that is related to the magnitude of the amplified RF signal; a thermally variable element, coupled to the rectifier, for maintaining the output power signal at a magnitude such that the RF signal magnitude is held at the selected level within a predetermined window of accuracy; an output power signal amplifier, coupled to said half wave rectifier for amplifying and comparing the output power signal to a reference magnitude to produce said current control signal; and an attenuator, coupled to said output power signal amplifier, for adjusting said current control signal in accordance with the level control signals.
Claim 104
Dependent Claim
46 words
Amplifying circuitry in accordance with claim 83 wherein said thermally variable element further comprises a diode resistively coupled to said half wave rectifier and a direct current power source whereby temperature variations in said half wave rectifier are compensated by direct current bias from the diode.
Claim 105
Dependent Claim
31 words
Amplifying circuitry in accordance with claim 83 wherein said attenuator further comprises an analog multiplexer for selecting one of a plurality of resistance values in response to the level control signals.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |