Patent US3202840A successfully refreshed from Google Patents.
US3202840A
Expired / Lapsed
US
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Frequency doubler employing two push-pull pulsed internal field effect devices
Assignee: RCA Corp
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Filing: 1963-03-19
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Granted: 1965-08-24
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Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Millard E Ames
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:33
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/06; H03B19/14; H10; H10D; H10D99/00; H03B2200/00; H03B2200/006; H03B2200/0092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN COMBINATION, FIRST AND SECOND SEMICONDUCTOR DEVICES EACH HAVING INPUT, OUTPUT AND COMMON ELECTRODES AND EXHIBITING A SQUARE LAW SIGNAL TRANSFER CHARACTERISTIC, INPUT CIRCUIT MEANS COUPLED TO APPLY INPUT SIGNALS TO SAID INPUT ELECTRODES IN PUSH-PULL RELATION, MEANS COUPLING SAID COMMON ELECTRODES TO A POINT OF REFERENCE POTENTIAL, BIASING CIRCUIT MEANS FOR APPLYING A BIAS VOLTAGE BETWEEN THE INPUT AND COMMON ELECTRODES OF SAID FIRST AND SECOND DEVICES TO OPERATE SAID FIRST AND SECOND DEVICES TO EXHIBIT SAID SQUARE LAW SIGNAL TRANSFER CHARACTERISTIC, AND LOAD CIRCUIT MEANS COUPLED TO SAID OUTPUT ELECTRODES OF SAID FIRST AND SECOND DEVICES TO DERIVE AN OUTPUT SIGNAL WHICH HAS TWICE THE FREQUENCY OF SAID INPUT SIGNAL.
Claim 2
Dependent Claim
112 words
IN COMBINATION, FIRST AND SECOND SEMICONDUCTOR DEVICES EACH HAVING INPUT, OUTPUT AND COMMON ELECTRODES AND EXHIBITING A SQUARE LAW SIGNAL TRANSFER CHARACTERISTIC, INPUT CIRCUIT MEANS COUPLED TO APPLY INPUT SIGNALS TO SAID INPUT ELECTRODES IN PUSH-PULL RELATION, MEANS COUPLING SAID COMMON ELECTRODES TO A POINT OF REFERENCE POTENTIAL, BIASING CIRCUIT MEANS FOR APPLYING A BIAS VOLTAGE BETWEEN THE INPUT AND COMMON ELECTRODES OF SAID FIRST AND SECOND DEVICES TO OPERATE SAID FIRST AND SECOND DEVICES TO EXHIBIT SAID SQUARE LAW SIGNAL TRANSFER CHARACTERISTIC, AND LOAD CIRCUIT MEANS COUPLED TO SAID OUTPUT ELECTRODES OF SAID FIRST AND SECOND DEVICES TO DERIVE AN OUTPUT SIGNAL WHICH HAS TWICE THE FREQUENCY OF SAID INPUT SIGNAL.
References Cited (Backward Citations)
US3093752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |