US3096485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diode traveling wave parametric amplifier
Assignee: RCA Corp
•
Filing: 1960-01-04
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Granted: 1963-07-02
•
Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Kern K N Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:52
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A PARAMETRIC AMPLIFIER COMPRISING, IN COMBINATION, A CONTINUOUSLY WOUND HELICAL TRANSMISSION LINE, A SINGLE VARIABLE CAPACITANCE SEMICONDUCTOR JUNCTION DIODE COUPLED FOR RADIO FREQUENCY CURRENT CONDUCTION BETWEEN A POINT ON ONE TURN OF SAID LINE AND A POINT ON THE NEXT TURN OF SAID LINE IN RESPONSE TO A RADIO FREQUENCY FIELD OF SAID LINE MEANS CONNECTED TO ONE END OF SAID LINE FOR APPLYING A FIRST RADIO FREQUENCY SIGNAL OF SIGNAL FREQUENCY TO SAID ONE END OF SAID LINE, MEANS INCLUDING A HELIX IN AN INDUCTIVE ENERGY COUPLING RELATIONSHIP WITH SAID ONE END OF SAID LINE FOR APPLYING A SECOND RADIO FREQUENCY SIGNAL OF PUMP FREQUENCY HIGHER THAN SAID SIGNAL FREQUENCY TO SAID LINE, SAID LINE BEING DIMENSIONED TO SUPPORT ELECTRICAL ENERGY OF SAID PUMP FREQUENCY, SAID SIGNAL FREQUENCY, AND A FREQUENCY EQUAL TO THE DIFFERENCE BETWEEN SAID PUMP AND SIGNAL FREQUENCIES, AND MEANS TO DERIVE FROM THE OTHER END OF SAID LINE AN OUTPUT SIGNAL HAVING A FREQUENCY EQUAL TO ONE OF SAID SIGNAL, PUMP AND DIFFERENCE FREQUENCIES.
Claim 2
Dependent Claim
169 words
A PARAMETRIC AMPLIFIER COMPRISING, IN COMBINATION, A CONTINUOUSLY WOUND HELICAL TRANSMISSION LINE, A SINGLE VARIABLE CAPACITANCE SEMICONDUCTOR JUNCTION DIODE COUPLED FOR RADIO FREQUENCY CURRENT CONDUCTION BETWEEN A POINT ON ONE TURN OF SAID LINE AND A POINT ON THE NEXT TURN OF SAID LINE IN RESPONSE TO A RADIO FREQUENCY FIELD OF SAID LINE MEANS CONNECTED TO ONE END OF SAID LINE FOR APPLYING A FIRST RADIO FREQUENCY SIGNAL OF SIGNAL FREQUENCY TO SAID ONE END OF SAID LINE, MEANS INCLUDING A HELIX IN AN INDUCTIVE ENERGY COUPLING RELATIONSHIP WITH SAID ONE END OF SAID LINE FOR APPLYING A SECOND RADIO FREQUENCY SIGNAL OF PUMP FREQUENCY HIGHER THAN SAID SIGNAL FREQUENCY TO SAID LINE, SAID LINE BEING DIMENSIONED TO SUPPORT ELECTRICAL ENERGY OF SAID PUMP FREQUENCY, SAID SIGNAL FREQUENCY, AND A FREQUENCY EQUAL TO THE DIFFERENCE BETWEEN SAID PUMP AND SIGNAL FREQUENCIES, AND MEANS TO DERIVE FROM THE OTHER END OF SAID LINE AN OUTPUT SIGNAL HAVING A FREQUENCY EQUAL TO ONE OF SAID SIGNAL, PUMP AND DIFFERENCE FREQUENCIES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |