US3195062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agc parametric amplifier using negative bias and detuned circuits
Assignee: RCA Corp
•
Filing: 1961-01-19
•
Granted: 1965-07-13
•
Expires: 1981-01-19
Abstract
No abstract record available.
Inventors
- 👤 Murakami Tomomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PARAMETRIC AMPLIFIER COMPRISNG THE COMBINATION OF A VARIABLE CAPACITANCE JUNCTION DIODE, A SIGNAL INPUT CIRCUIT COUPLED TO SAID DIODE, A PUMP OSCILLATOR COUPLED TO SAID DIODE, AN IDLER CIRCUIT TUNED TO THE DIFFERENCE FREQUENCY PRODUCED BY THE INTERACTION OF SIGNALS FROM SAID SIGNAL INPUT CIRCUIT AND SAID PUMP OSCILLATOR, SAID IDLER CIRCUIT COUPLED TO SAID DIODE, AND MEANS INCLUDING A GAIN CONTROLLING VOLTAGE SOURCE FOR APPLYING A RELATIVELY FIXED AMOUNT OF REVERSE BIAS VOLTAGE TO SAID DIODE FOR SIGNALS APPLIED TO SAID INPUT CIRCUIT BELOW A PREDETERMINED THRESHOLD LEVEL AND INCREASING VALUES OF REVERSE BIAS VOLTAGE TO SAID DIODE FOR INCREASING LEVELS ABOVE SAID THRESHOLD LEVEL OF SIGNALS APPLIED TO SAID INPUT CIRCUIT.
Claim 2
Dependent Claim
114 words
A PARAMETRIC AMPLIFIER COMPRISNG THE COMBINATION OF A VARIABLE CAPACITANCE JUNCTION DIODE, A SIGNAL INPUT CIRCUIT COUPLED TO SAID DIODE, A PUMP OSCILLATOR COUPLED TO SAID DIODE, AN IDLER CIRCUIT TUNED TO THE DIFFERENCE FREQUENCY PRODUCED BY THE INTERACTION OF SIGNALS FROM SAID SIGNAL INPUT CIRCUIT AND SAID PUMP OSCILLATOR, SAID IDLER CIRCUIT COUPLED TO SAID DIODE, AND MEANS INCLUDING A GAIN CONTROLLING VOLTAGE SOURCE FOR APPLYING A RELATIVELY FIXED AMOUNT OF REVERSE BIAS VOLTAGE TO SAID DIODE FOR SIGNALS APPLIED TO SAID INPUT CIRCUIT BELOW A PREDETERMINED THRESHOLD LEVEL AND INCREASING VALUES OF REVERSE BIAS VOLTAGE TO SAID DIODE FOR INCREASING LEVELS ABOVE SAID THRESHOLD LEVEL OF SIGNALS APPLIED TO SAID INPUT CIRCUIT.
References Cited (Backward Citations)
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Cited
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |