US5621354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for performing error corrected amplification in a radio frequency system
Assignee: Google Technology Holdings LLC
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Filing: 1995-10-17
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Granted: 1997-04-15
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Expires: 2015-10-17
Abstract
Abstract An error corrected amplifier circuit (100) for use in a radio frequency system is provided. The error corrected amplifier circuit (100) includes a first pilot modulation stage (101) and a second pilot modulation stage (103). The first pilot modulation stage (101) creates a first amplified signal (129) having an error component and a first error signal (134) indicative of the error component. The second pilot modulation stage (103) receives the first amplified signal (129) and the error signal (134) and generates an error reduced amplified signal (158).
Inventors
- 👤 James E. Mitzlaff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:08
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/32; H03F1/3223; H03F1/3229; H03F1/3235; H03F1/3241; H03F1/3247; H03F2200/00; H03F2200/102; H03F2200/438; H03F2201/00; H03F2201/32; H03F2201/3212; H03F2201/3221
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
138 words
An amplifier circuit for use in a radio frequency system comprising: a first pilot modulation stage creating a first amplified signal having an error component and an error signal indicative of the error component, said first pilot modulation stage comprising: a signal splitter receiving an input signal and generating a, first and second input signal; a Pilot modulator coupled to said signal splitter and receiving the first input signal; a phase and gain control circuit coupled to said signal splitter and receiving the second input signal; an amplifier responsive to the pilot modulator; and a coupler responsive to said amplifier and responsive to said phase and gain control circuit, said coupler generating said first amplified signal; and a second pilot modulation stage receiving the first amplified signal and the error signal and generating an error reduced amplified signal.
Claim 2
Dependent Claim
138 words
An amplifier circuit for use in a radio frequency system comprising: a first pilot modulation stage creating a first amplified signal having an error component and an error signal indicative of the error component, said first pilot modulation stage comprising: a signal splitter receiving an input signal and generating a, first and second input signal; a Pilot modulator coupled to said signal splitter and receiving the first input signal; a phase and gain control circuit coupled to said signal splitter and receiving the second input signal; an amplifier responsive to the pilot modulator; and a coupler responsive to said amplifier and responsive to said phase and gain control circuit, said coupler generating said first amplified signal; and a second pilot modulation stage receiving the first amplified signal and the error signal and generating an error reduced amplified signal.
Claim 3
Dependent Claim
16 words
The amplifier circuit of claim 1, wherein said pilot modulator is driven by a pilot source.
Claim 4
Dependent Claim
17 words
The amplifier circuit of claim 1, wherein the first and second input signals are substantially the same.
Claim 5
Dependent Claim
25 words
The amplifier circuit of claim 1, wherein said coupler receives a delayed signal produced by passing the second input signal through a time delaying circuit.
Claim 6
Dependent Claim
44 words
The amplifier circuit of claim 1, wherein said first pilot modulation stage further comprises a second gain and phase control circuit in communication with said coupler and an error amplifier coupled to the second gain and phase control circuit and generating said error signal.
Claim 7
Dependent Claim
20 words
The amplifier circuit of claim 1, wherein said phase and gain control circuit is in communication with a programmable controller.
Claim 8
Dependent Claim
22 words
The amplifier circuit of claim 1, wherein said pilot modulator is driven by a phase pilot source and a gain pilot source.
Claim 9
Dependent Claim
15 words
The amplifier circuit of claim 6, further comprising a switch coupled to said pilot modulator.
Claim 10
Dependent Claim
55 words
The amplifier circuit of claim 1, wherein the second pilot modulation stage comprises: an error insertion coupler receiving said first amplified signal and said error signal; a second pilot modulator responsive to said error insertion coupler; and a main amplifier responsive to said second pilot modulator, said main amplifier generating said error reduced amplified signal.
Claim 11
Dependent Claim
19 words
The amplifier circuit of claim 9, wherein said second pilot modulator is driven by at least one pilot source.
Claim 12
Dependent Claim
16 words
The amplifier circuit of claim 10, wherein said second pilot modulator is coupled to a switch.
Claim 13
Dependent Claim
15 words
The amplifier circuit of claim 1, wherein said radio frequency system comprises a communication system.
Claim 14
Dependent Claim
20 words
The amplifier circuit of claim 12, wherein said communication system comprises one of a cellular system and a microwave system.
Claim 15
Dependent Claim
14 words
The amplifier circuit of claim 13, wherein said cellular system is a CDMA system.
Claim 16
Dependent Claim
23 words
The amplifier circuit of claim 1, further comprising a third pilot modulator and a third amplifier coupled to said first pilot modulation stage.
Claim 17
Dependent Claim
54 words
An error correcting radio frequency amplifier circuit comprising: an amplifier; a phase pilot source; a gain pilot source; a pilot modulator coupled to the amplifier; a first on/off switch selectively coupling the pilot modulator and the phase pilot source; and a second on/off switch selectively coupling the pilot modulator and the gain pilot source.
Claim 18
Dependent Claim
54 words
An error correcting radio frequency amplifier circuit comprising: an amplifier; a phase pilot source; a gain pilot source; a pilot modulator coupled to the amplifier; a first on/off switch selectively coupling the pilot modulator and the phase pilot source; and a second on/off switch selectively coupling the pilot modulator and the gain pilot source.
Claim 19
Dependent Claim
17 words
The amplifier of claim 16, wherein said first on/off switch is used to perform DC offset compensation.
Claim 20
Dependent Claim
104 words
An amplifier circuit for use in a radio frequency system comprising: a first pilot modulation stage creating a first amplified signal having an error component and an error signal indicative of the error component; and a second pilot modulation stage receiving the first amplified signal and the error signal and generating an error reduced amplified signal, the second pilot modulation stage comprising: an error insertion coupler receiving said first amplified signal and said error signal; a second pilot modulator responsive to said error insertion coupler; and a main amplifier responsive to said second pilot modulator, said main amplifier generating said error reduced amplified signal.
Claim 21
Dependent Claim
104 words
An amplifier circuit for use in a radio frequency system comprising: a first pilot modulation stage creating a first amplified signal having an error component and an error signal indicative of the error component; and a second pilot modulation stage receiving the first amplified signal and the error signal and generating an error reduced amplified signal, the second pilot modulation stage comprising: an error insertion coupler receiving said first amplified signal and said error signal; a second pilot modulator responsive to said error insertion coupler; and a main amplifier responsive to said second pilot modulator, said main amplifier generating said error reduced amplified signal.
Claim 22
Dependent Claim
72 words
An amplifier circuit for use in a radio frequency system comprising: a first pilot modulation stage creating a first amplified signal having an error component and an error signal indicative of the error component; a second pilot modulation stage responsive to the first amplified signal and the error signal and generating an error reduced amplified signal; and a third pilot modulator and a third amplifier coupled to said first pilot modulation stage.
Claim 23
Dependent Claim
72 words
An amplifier circuit for use in a radio frequency system comprising: a first pilot modulation stage creating a first amplified signal having an error component and an error signal indicative of the error component; a second pilot modulation stage responsive to the first amplified signal and the error signal and generating an error reduced amplified signal; and a third pilot modulator and a third amplifier coupled to said first pilot modulation stage.
Claim 24
Dependent Claim
23 words
The amplifier of claim 19, wherein the third pilot modulator and the third amplifier are directly coupled to said first pilot modulation stage.
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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) | 2000-04-14 | 2000-10-14 | 2001-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-14 | 2004-10-14 | 2005-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-14 | 2008-10-14 | 2009-04-15 | $7700.00 | Window Closed / Lapsed |