US3348154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal mixing and conversion apparatus employing field effect transistor with squarelaw operation
Assignee: H H SCOTT Inc
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Filing: 1965-12-14
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Granted: 1967-10-17
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Expires: 1985-12-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Lawrence W Fish
- 👤 Recklinghausen Daniel R Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:39
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0052; H03D; H03D7/00; H03D7/12; H03D7/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
SIGNAL MIXING APPARATUS HAVING, IN COMBINATION, FIELD-EFFECT TRANSISTOR MEANS PROVIDED WITH SOURCE, DRAIN AND GATE ELECTRODE MEANS AND A SUBSTANTIALLY SQUARE-LAW CHARACTERISTIC EXTENDING OVER THE PREDETERMINED VOLTAGE OF RANGE BETWEEN ZERO BIAS VOLTAGE AND PINCH-OFF VOLTAGE OF SAID TRANSISTOR MEANS, A PAIR OF INPUT CIRCUITS CONNECTED WITH THE SOURCE AND GATE ELECTRODE MEANS FOR RESPECTIVELY APPLYING TO AND MIXING WITHIN THE FIELD-EFFECT TRANSISTOR MEANS A PAIR OF ALTERNATING-CURRENT VOLTAGES OF PEAK-TOPEAK VALUES THE SUM OF WHICH LIES UBSTANTILLY WITH SAID RANGE, MEANS FOR ESTABLISHING A D.C. BIAS FOR SAID TRANSISTOR MEANS OF THE ORDER OF SUBSTANTIALLY ONE-HALF THE PINCH-OFF VOLTAGE, AND AN OUTPUT CIRCUIT CONNECTED WITH SAID DRAIN ELECTRODE MEANS FOR WITHDRAWING THE RESULTANT OF THE SAID MIXING.
Claim 2
Dependent Claim
118 words
SIGNAL MIXING APPARATUS HAVING, IN COMBINATION, FIELD-EFFECT TRANSISTOR MEANS PROVIDED WITH SOURCE, DRAIN AND GATE ELECTRODE MEANS AND A SUBSTANTIALLY SQUARE-LAW CHARACTERISTIC EXTENDING OVER THE PREDETERMINED VOLTAGE OF RANGE BETWEEN ZERO BIAS VOLTAGE AND PINCH-OFF VOLTAGE OF SAID TRANSISTOR MEANS, A PAIR OF INPUT CIRCUITS CONNECTED WITH THE SOURCE AND GATE ELECTRODE MEANS FOR RESPECTIVELY APPLYING TO AND MIXING WITHIN THE FIELD-EFFECT TRANSISTOR MEANS A PAIR OF ALTERNATING-CURRENT VOLTAGES OF PEAK-TOPEAK VALUES THE SUM OF WHICH LIES UBSTANTILLY WITH SAID RANGE, MEANS FOR ESTABLISHING A D.C. BIAS FOR SAID TRANSISTOR MEANS OF THE ORDER OF SUBSTANTIALLY ONE-HALF THE PINCH-OFF VOLTAGE, AND AN OUTPUT CIRCUIT CONNECTED WITH SAID DRAIN ELECTRODE MEANS FOR WITHDRAWING THE RESULTANT OF THE SAID MIXING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |