US3668552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-pull transferred electron oscillator
Assignee: United States Department of the Air Force
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Filing: 1971-04-29
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Granted: 1972-06-06
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Expires: 1991-04-29
Abstract
Abstract A push-pull transferred-electron oscillator circuit in which a number of transferred-electron devices are connected in parallel to a DC bias circuit, but, in the RF (radio frequency) circuit, they operate in a push-pull manner so that the RF power is increased by four times for the same RF impedance.
Inventors
- 👤 Hiromu J Kuno
- 👤 Bertrand E Berson
- 👤 James F Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:35
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/143
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
164 words
A push-pull transferred-electron oscillator comprising a common bias voltage source to provide a predetermined above threshold voltage, first and second transferred-electron devices, each of said devices exhibiting a voltage controlled negative resistance upon being biased at a predetermined voltage above threshold resulting in voltage and current instabilities at microwave frequencies, said devices being connected in parallel to said common bias voltage source, push-pull microwave resonators having said first and second devices connected to said push-pull resonators, respectively, for driving purposes, said push-pull resonators being comprised of a ground plane, an oscillator line positioned over said ground plane, said oscillator line having first and second ends and a midpoint, said first device being connected between said first end and ground, and said second device between said second end and ground, a radio frequency choke in a series arrangement with said bias voltage source, said series arrangement being connected between said midpoint and ground, and means to couple power from said push-pull resonators to a load.
Claim 2
Dependent Claim
164 words
A push-pull transferred-electron oscillator comprising a common bias voltage source to provide a predetermined above threshold voltage, first and second transferred-electron devices, each of said devices exhibiting a voltage controlled negative resistance upon being biased at a predetermined voltage above threshold resulting in voltage and current instabilities at microwave frequencies, said devices being connected in parallel to said common bias voltage source, push-pull microwave resonators having said first and second devices connected to said push-pull resonators, respectively, for driving purposes, said push-pull resonators being comprised of a ground plane, an oscillator line positioned over said ground plane, said oscillator line having first and second ends and a midpoint, said first device being connected between said first end and ground, and said second device between said second end and ground, a radio frequency choke in a series arrangement with said bias voltage source, said series arrangement being connected between said midpoint and ground, and means to couple power from said push-pull resonators to a load.
Claim 3
Dependent Claim
56 words
A push-pull transferred electron oscillator as described in claim 1 wherein said means to couple power is comprised of a coupling line positioned adjacent to said oscillator line, said coupling line having first and second ends, and first and second variable capacitors connected between ground and said first and second ends, respectively, of said coupling line.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |