US3341783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low noise parametric system
Assignee: Thales SA
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Filing: 1966-07-29
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Granted: 1967-09-12
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Expires: 1986-07-29
Abstract
No abstract record available.
Inventors
- 👤 David J Roulston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:54
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
AN AMPLIFIER SYSTEM, COMPRISING A PARAMETRIC AMPLIFIER, FOR EXAMPLE OF THE UP-CONVERTER TYPE, HAVING A FIRST INPUT FOR RECEIVING A SIGNAL AT A FIRST FREQUENCY F1 AND A SECOND INPUT FOR RECEIVING A PUMP FREQUENCY POWER AND THROUGH WHICH THE OUTPUT SIGNAL IS COLLECTED; A CIRCULATOR HAVING A FIRST, A SECOND AND A THIRD PORT; A PUMP GENERATOR HAVING AN OUTPUT FOR DELIVERING A SIGNAL AT A PUMP FREQUENCY FP, WITH FP LARGE WITH RESPECT TO F1, CONNECTED TO SAID FIRST PORT; SAID SECOND PORT OF SAID CIRCULATOR BEING COUPLED TO SAID SECOND INPUT OF SAID AMPLIFIER; A MIXER HAVING A FIRST INPUT, A SECOND INPUT AND AN OUTPUT; MEANS FOR APPLYING A LOCAL OSCILLATOR SIGNAL TO SAID SECOND INPUT OF SAID MIXER; A SECOND CIRCULATOR HAVING A FOURTH PORT CONNECTED TO SAID THIRD PORT, A FIFTH AND A SIXTH PORT, A DEGENERATE AMPLIFIER HAVING A FIRST INPUT FOR RECEIVING A PUMP FREQUENCY AT A FREQUENCY 2FP, A SECOND INPUT CONNECTED TO SAID FIFTH PORT, SAID FIRST INPUT OF SAID MIXER BEING COUPLED TO SAID SIXTH PORT, A FREQUENCY DOUBLER, A PHASE SHIFTING MEANS AND ATTENUATING MEANS BEING CONNECTED IN SERIES BETWEEN SAID SECOND INPUT OF SAID DEGENERATE AMPLIFIER AND SAID PUMP GENERATOR.
Claim 2
Dependent Claim
203 words
AN AMPLIFIER SYSTEM, COMPRISING A PARAMETRIC AMPLIFIER, FOR EXAMPLE OF THE UP-CONVERTER TYPE, HAVING A FIRST INPUT FOR RECEIVING A SIGNAL AT A FIRST FREQUENCY F1 AND A SECOND INPUT FOR RECEIVING A PUMP FREQUENCY POWER AND THROUGH WHICH THE OUTPUT SIGNAL IS COLLECTED; A CIRCULATOR HAVING A FIRST, A SECOND AND A THIRD PORT; A PUMP GENERATOR HAVING AN OUTPUT FOR DELIVERING A SIGNAL AT A PUMP FREQUENCY FP, WITH FP LARGE WITH RESPECT TO F1, CONNECTED TO SAID FIRST PORT; SAID SECOND PORT OF SAID CIRCULATOR BEING COUPLED TO SAID SECOND INPUT OF SAID AMPLIFIER; A MIXER HAVING A FIRST INPUT, A SECOND INPUT AND AN OUTPUT; MEANS FOR APPLYING A LOCAL OSCILLATOR SIGNAL TO SAID SECOND INPUT OF SAID MIXER; A SECOND CIRCULATOR HAVING A FOURTH PORT CONNECTED TO SAID THIRD PORT, A FIFTH AND A SIXTH PORT, A DEGENERATE AMPLIFIER HAVING A FIRST INPUT FOR RECEIVING A PUMP FREQUENCY AT A FREQUENCY 2FP, A SECOND INPUT CONNECTED TO SAID FIFTH PORT, SAID FIRST INPUT OF SAID MIXER BEING COUPLED TO SAID SIXTH PORT, A FREQUENCY DOUBLER, A PHASE SHIFTING MEANS AND ATTENUATING MEANS BEING CONNECTED IN SERIES BETWEEN SAID SECOND INPUT OF SAID DEGENERATE AMPLIFIER AND SAID PUMP GENERATOR.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |