US3143662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel diode amplifier employing alternating current bias
Assignee: RCA Corp
•
Filing: 1960-11-02
•
Granted: 1964-08-04
•
Expires: 1980-11-02
Abstract
No abstract record available.
Inventors
- 👤 James J Hill
- 👤 Melvin M Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:09
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/04; H03F3/10; H03F3/12; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN AMPLIFIER COMPRISING TWO TUNNEL DIODES CONNECTED IN SERIES, MEANS TO APPLY A DIRECT CURRENT BIAS ACROSS SAID SERIES CONNECTED DIODES, MEANS TO APPLY AN ALTERNATING CURRENT BIAS ACROSS SAID SERIES CONNECTED DIODES, MEANS TO APPLY AN INPUT SIGNAL TO THE JUNCTION BETWEEN SAID DIODES, AND MEANS TO DERIVE AN OUTPUT SIGNAL FROM THE JUNCTION BETWEEN SAID DIODES, SAID DIODES BEING SELECTED TO HAVE CHARACTERISTICS SUCH THAT WHEN INSTANTANEOUS PEAK BIAS VOLTAGE IS APPLIED, ONE OF THE DIODES MUST BE IN ITS HIGH VOLTAGE STATE AND THE OTHER MUST BE IN ITS LOW VOLTAGE STATE, SAID DIODES BEING FURTHER SELECTED TO HAVE DIFFERENT CHARACTERISTICS SO THAT IN THE ABSENCE OF AN INPUT SIGNAL OF ONE POLARITY THE PEAK BIAS VOLTAGE
Claim 2
Dependent Claim
120 words
AN AMPLIFIER COMPRISING TWO TUNNEL DIODES CONNECTED IN SERIES, MEANS TO APPLY A DIRECT CURRENT BIAS ACROSS SAID SERIES CONNECTED DIODES, MEANS TO APPLY AN ALTERNATING CURRENT BIAS ACROSS SAID SERIES CONNECTED DIODES, MEANS TO APPLY AN INPUT SIGNAL TO THE JUNCTION BETWEEN SAID DIODES, AND MEANS TO DERIVE AN OUTPUT SIGNAL FROM THE JUNCTION BETWEEN SAID DIODES, SAID DIODES BEING SELECTED TO HAVE CHARACTERISTICS SUCH THAT WHEN INSTANTANEOUS PEAK BIAS VOLTAGE IS APPLIED, ONE OF THE DIODES MUST BE IN ITS HIGH VOLTAGE STATE AND THE OTHER MUST BE IN ITS LOW VOLTAGE STATE, SAID DIODES BEING FURTHER SELECTED TO HAVE DIFFERENT CHARACTERISTICS SO THAT IN THE ABSENCE OF AN INPUT SIGNAL OF ONE POLARITY THE PEAK BIAS VOLTAGE
References Cited (Backward Citations)
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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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |