Patent US4190808A successfully refreshed from Google Patents.
US4190808A
Expired / Lapsed
US
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Amplifier-oscillator frequency multiplier apparatus
Assignee: United States Department of the Air Force
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Filing: 1978-03-23
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Granted: 1980-02-26
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Expires: 1998-03-23
Abstract
Abstract An amplifier-oscillator frequency multiplier apparatus utilizing a pair of servo-connected amplifiers which are electronically switchable to provide either a coherent amplifier or a non-coherent oscillator.
Inventors
- 👤 Lyle A. Fajen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:30
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
160 words
An amplifier-oscillator frequency multiplier apparatus comprising in combination: a first amplifier means having a first and second input and an output, a second amplifier means having an input and a first and second output, a feedback means operating at a first predetermined frequency, said feedback means being connected from said output of said first amplifier means to said input of said second amplifier means a first switch means connected from said first input of said first amplifier means to ground, said first switch means having a first and second state, a second switch means connected to said second input of said first amplifier means, said second switch means having a first and second state, a crystal connected from said second output of said second amplifier means to said second switch means, said crystal operating at a predetermined frequency, and an output network connected to said first output of said second amplifier means, said output network operating at a predetermined frequency.
Claim 2
Dependent Claim
160 words
An amplifier-oscillator frequency multiplier apparatus comprising in combination: a first amplifier means having a first and second input and an output, a second amplifier means having an input and a first and second output, a feedback means operating at a first predetermined frequency, said feedback means being connected from said output of said first amplifier means to said input of said second amplifier means a first switch means connected from said first input of said first amplifier means to ground, said first switch means having a first and second state, a second switch means connected to said second input of said first amplifier means, said second switch means having a first and second state, a crystal connected from said second output of said second amplifier means to said second switch means, said crystal operating at a predetermined frequency, and an output network connected to said first output of said second amplifier means, said output network operating at a predetermined frequency.
Claim 3
Dependent Claim
28 words
An amplifier-oscillator frequency multiplier apparatus as described in claim 1 wherein said first and second switch means are in said first state to provide coherent amplifier multiplier operation.
Claim 4
Dependent Claim
29 words
An amplifier-oscillator frequency multiplier apparatus as described in claim 1 wherein said first and second switch means are in said second state to provide a non-coherent oscillator multiplier operation.
Claim 5
Dependent Claim
25 words
An amplifier-oscillator frequency multiplier apparatus as described in claim 1 wherein said first and second amplifier means comprises an integrated circuit having two-multi-transistor amplifier stages.
Claim 6
Dependent Claim
22 words
An amplifier-oscillator frequency multiplier apparatus as described in claim 1 wherein said first predetermined frequency of said feedback network is 70 MHz.
Claim 7
Dependent Claim
20 words
An amplifier-oscillator frequency multiplier apparatus as described in claim 1 wherein said predetermined frequency of said crystal is 70 MHz.
Claim 8
Dependent Claim
18 words
An amplifier-oscillator frequency multiplier apparatus as described in claim 1 wherein said first switch means comprises a diode.
Claim 9
Dependent Claim
18 words
An amplifier-oscillator frequency multiplier apparatus as described in claim 1 wherein said second switch means comprises a transistor.
Claim 10
Dependent Claim
21 words
An amplifier-oscillator frequency multiplier apparatus as described in claim 1 wherein said predetermined frequency of said output network is 140 MHz.
Claim 11
Dependent Claim
40 words
An amplifier-oscillator frequency multiplier apparatus as described in claim 1 wherin said first state of said first and second switch means is an open circuit, and said second state of said first and second switch means is a short circuit.
References Cited (Backward Citations)
US3195070A
Cited
US4001732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |