US3701020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase coded rf pulse generator
Assignee: United States Department of the Air Force
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Filing: 1970-07-15
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Granted: 1972-10-24
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Expires: 1990-07-15
Abstract
Abstract The low power RF injection pulses of an injection-locked pulsed magnetron are phase controlled in coded sequence to provide high power phase coded coherent RF output pulses. The magnetron transmits pulses having identical phase patterns as those of the injected signals. Complex coding is achieved by multiple alternate 180* phase shifts and by varying degrees of phase shifts within individual pulses.
Inventors
- 👤 Peter A De Vito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:32
CPC Classifications
H; H03; H03C; H03C5/00; H03C5/02; H03C5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A high power phase coded RF pulse generator comprising, a stable low power RF source, a diode switch adapted to pulse the output of said RF source, an electronic phase shifter adapted to effect multiple 180* intrapulse phase shifts in pulses generated by said RF sources, a grounded cathode magnetron oscillator, a pulse generator connected to said magnetron oscillator and adapted to effect pulsed operation thereof, a first microwave transmission line adapted to apply the phase shifted pulsed output of said electronic phase shifter to the interaction circuit of said magnetron oscillator, a second microwave transmission line adapted to transmit the output of said magnetron oscillator, a circulator in interconnecting relationship with said first and second microwave transmission lines, and a trigger generator adapted to synchronize the operations of said diode switch, said electronic phase shifter, and said pulse generator to effect injection locked pulsed magnetron oscillator operation.
Claim 2
Dependent Claim
148 words
A high power phase coded RF pulse generator comprising, a stable low power RF source, a diode switch adapted to pulse the output of said RF source, an electronic phase shifter adapted to effect multiple 180* intrapulse phase shifts in pulses generated by said RF sources, a grounded cathode magnetron oscillator, a pulse generator connected to said magnetron oscillator and adapted to effect pulsed operation thereof, a first microwave transmission line adapted to apply the phase shifted pulsed output of said electronic phase shifter to the interaction circuit of said magnetron oscillator, a second microwave transmission line adapted to transmit the output of said magnetron oscillator, a circulator in interconnecting relationship with said first and second microwave transmission lines, and a trigger generator adapted to synchronize the operations of said diode switch, said electronic phase shifter, and said pulse generator to effect injection locked pulsed magnetron oscillator operation.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |