US3577092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal path series step-biased multidevice high-efficiency amplifier
Assignee: Collins Radio Co
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Filing: 1968-07-09
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Granted: 1971-05-04
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Expires: 1988-07-09
Abstract
Abstract A high-efficiency transformerless amplitude modulation system with an audio frequency power amplifier having at least two amplifier segments with at least one amplifier device in each, a different level voltage power supply for each amplifier segment, and a bias step between adjacent amplifier segments, and with a modulation output direct DC connection from the AFPA to the RF power amplifier of the system.
Inventors
- 👤 Arthurp P Kubicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:22
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/02; H03F1/0205; H03F1/0211; H03F1/0244; H03F3/00; H03F3/20; H03F3/24; H03F3/245
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
An audio frequency power amplifier having: signal input connective means; a plurality of amplifier segments connected in parallel to said input connective means; at least one amplifier device in each segment; voltage power supply means with a different voltage level connection in the same direction from a voltage potential reference source for each of said amplifier segments; bias source step means between adjacent amplifier segments; with a signal output connection from each of said amplifier segments in common to a signal output line connection; and wherein the bias source step means between adjacent amplifier segments is provided in the connection and in the input signal path, respectively, of each of the plurality of said amplifier segments, more than one, to said input connective means.
Claim 2
Dependent Claim
124 words
An audio frequency power amplifier having: signal input connective means; a plurality of amplifier segments connected in parallel to said input connective means; at least one amplifier device in each segment; voltage power supply means with a different voltage level connection in the same direction from a voltage potential reference source for each of said amplifier segments; bias source step means between adjacent amplifier segments; with a signal output connection from each of said amplifier segments in common to a signal output line connection; and wherein the bias source step means between adjacent amplifier segments is provided in the connection and in the input signal path, respectively, of each of the plurality of said amplifier segments, more than one, to said input connective means.
Claim 3
Dependent Claim
47 words
The audio frequency power amplifier of claim 1, wherein with a plurality of more than two amplifier segments the bias source step means for successive amplifier segments are series connected with the common junctions between successive bias source step means being input connections for respective amplifier segments.
Claim 4
Dependent Claim
29 words
The audio frequency power amplifier of claim 2, wherein the bias source step means are batteries with at least one in each input connection between parallel-connected adjacent amplifier segments.
Claim 5
Dependent Claim
35 words
The audio frequency power amplifier of claim 2, including unidirectional conductive means in the connection between at least one of said amPlifier segments and the respective power supply voltage level connection for the respective segment.
Claim 6
Dependent Claim
18 words
The audio frequency power amplifier of claim 4, wherein said unidirectional conductive means is at least one diode.
Claim 7
Dependent Claim
57 words
The audio frequency power amplifier of claim 1, wherein there are two amplifier segments with the voltage level connection from said voltage power supply means for one of said amplifier segments being at substantially a voltage level twice the voltage level of the connection from said voltage power supply means for the other of said amplifier segments.
Claim 8
Dependent Claim
65 words
The audio frequency power amplifier of claim 1, wherein said voltage power supply means includes a plurality of series-connected batteries connected in voltage adding direction from a voltage potential reference source; and with junctions between batteries and the battery terminal most remote from said voltage potential reference source being said different voltage level connections of said voltage power supply means for the respective amplifier segments.
References Cited (Backward Citations)
US2404099A
Cited
US2602919A
Cited
US2692371A
Cited
US3293530A
Cited
US3335370A
Cited
US3443239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |