US3099804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency negative resistance circuits
Assignee: RCA Corp
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Filing: 1960-08-23
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Granted: 1963-07-30
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Expires: 1980-08-23
Abstract
No abstract record available.
Inventors
- 👤 Donald E Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:16
CPC Classifications
H; H03; H03B; H03B7/00; H03B7/12; H03B7/14; H03B7/02; H03B7/06; H03B7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A HIGH FREQUENCY CIRCUIT HAVING A PREDETERMINED MEAN OPERATING FREQUENCY COMPRISING IN COMBINATION A RESONANT REENTRANT TRANSMISSION LINE INCLUDING A PAIR OF ANNULAR CONDUCTORS, SAID CONDUCTORS HAVING MEANS CIRCUMFERENCE WHICH IS SUBSTANTIALLY EQUAL TO ONE WAVELENGTH AT THE SAID PREDETERMINED MEAN OPERATING FREQUENCY, AN ACTIVE ELEMENT COMPRISING A VOLTAGE CONTROLLED NEGATIVE RESISTANCE DEVICE COUPLED TO SAID TRANSMISSION LINE AND A RESISTOR COUPLED TO SAID TRANSMISSION LINE AT A SPACED ARCUATE DISTANCE FROM SAID NEGATIVE RESISTANCE DEVICE AND ADAPTED FOR RECEIVING A BIAS VOLTAGE TO BIAS SAID DEVICE TO EXHIBIT A NEGATIVE RESISTANCE.
Claim 2
Dependent Claim
92 words
A HIGH FREQUENCY CIRCUIT HAVING A PREDETERMINED MEAN OPERATING FREQUENCY COMPRISING IN COMBINATION A RESONANT REENTRANT TRANSMISSION LINE INCLUDING A PAIR OF ANNULAR CONDUCTORS, SAID CONDUCTORS HAVING MEANS CIRCUMFERENCE WHICH IS SUBSTANTIALLY EQUAL TO ONE WAVELENGTH AT THE SAID PREDETERMINED MEAN OPERATING FREQUENCY, AN ACTIVE ELEMENT COMPRISING A VOLTAGE CONTROLLED NEGATIVE RESISTANCE DEVICE COUPLED TO SAID TRANSMISSION LINE AND A RESISTOR COUPLED TO SAID TRANSMISSION LINE AT A SPACED ARCUATE DISTANCE FROM SAID NEGATIVE RESISTANCE DEVICE AND ADAPTED FOR RECEIVING A BIAS VOLTAGE TO BIAS SAID DEVICE TO EXHIBIT A NEGATIVE RESISTANCE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |