US3196360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low noise amplifier
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1960-12-14
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Granted: 1965-07-20
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Expires: 1980-12-14
Abstract
No abstract record available.
Inventors
- 👤 James H Boyden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/26; H03F2200/00; H03F2200/372
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
A LOW NOISE PARAMETRIC AMPLIFIER SYSTEM COMPRISING: A PAIR OF SIMILAR LUMPED CONSTANT DELAY LINES, EACH COMPRISING A PLURALITY VOLTAGE SENSITIVE IMPEDANCE ELEMENTS HAVING ONE TERMINAL COUPLED TO A SIMILAR ELEMENT OF THE OTHER DELAY LINE TO FORM A SERIES VOLTAGE SENSITIVE COUPLING THEREBETWEEN; MEANS FOR IMPRESSING A HIGH FREQUENCY POWER SIGNAL ON ONE END OF EACH OF SAID PAIR WITH SAID PAIR RECEIVING IN PHASE POWER SIGNALS; AND MEANS FOR IMPRESSING A LOW FREQUENCY AUDIO SIGNAL INFORMATION ON EACH OF SAID PAIR SO THAT SIGNAL INFORMATION IS COUPLED ACROSS SAID VOLTAGE SENSITIVE COUPLINGS TO MODIFY THE TRANSMISSION CHARACTERISTICS OF EACH OF SAID PAIR TO SAID POWER SIGNAL AND THEREBY DEVELOP A RELATIVE PHASE SHIFT ON SAID POWER SIGNAL AS A FUNCTION OF THE DISTANCE FROM SAID ONE END.
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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |