Patent US3119080A successfully refreshed from Google Patents.
US3119080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor attenuating circuit
Assignee: General Electric Co
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Filing: 1960-11-02
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Granted: 1964-01-21
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Expires: 1980-11-02
Abstract
No abstract record available.
Inventors
- 👤 Robert L Watters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:59
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/04; H03F3/10; H03F3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A VOLTAGE SENSITIVE ATTENUATING CIRCUIT COMPRISING: A TUNNEL DIODE EXHIBITING A NEGATIVE RESISTANCE REGION IN THE LOW FORWARD VOLTAGE RANGE OF ITS CURRENT-VOLTAGE CHARACTERISTIC; BIAS MEANS COUPLED TO SAID TUNNEL DIODE ESTABLISHING A DIRECT CURRENT LOAD LINE THEREFOR WHICH HAS A SINGLE INTERSECTION WITH THE DIODE CURRENT-VOLTAGE CHARACTERISTIC; MEANS FOR IMPRESSING AN INPUT SIGNAL ON SAID TUNNEL DIODE DEVICE; A FREQUENCY SELECTIVE LOAD EFFECTIVELY CONNECTED ACROSS SAID TUNNEL DIODE DEVICE AT THE INPUT SIGNAL FREQUENCY AND HAVING ITS HIGHEST IMPEDANCE VALUE AT THE FREQUENCY OF SAID INPUT SIGNAL, SAID HIGHEST IMPEDANCE VALUE BEING LESS THAN THE ABSOLUTE VALUE OF THE TUNNEL DIODE NEGATIVE RESISTANCE; AND MEANS FOR COUPLING A CONTROL SIGNAL TO SAID DIODE FOR VARYING THE BIAS THEREON AND THE GAIN OF SAID CIRCUIT IN RESPONSE TO SAID CONTROL SIGNAL.
Claim 2
Dependent Claim
131 words
A VOLTAGE SENSITIVE ATTENUATING CIRCUIT COMPRISING: A TUNNEL DIODE EXHIBITING A NEGATIVE RESISTANCE REGION IN THE LOW FORWARD VOLTAGE RANGE OF ITS CURRENT-VOLTAGE CHARACTERISTIC; BIAS MEANS COUPLED TO SAID TUNNEL DIODE ESTABLISHING A DIRECT CURRENT LOAD LINE THEREFOR WHICH HAS A SINGLE INTERSECTION WITH THE DIODE CURRENT-VOLTAGE CHARACTERISTIC; MEANS FOR IMPRESSING AN INPUT SIGNAL ON SAID TUNNEL DIODE DEVICE; A FREQUENCY SELECTIVE LOAD EFFECTIVELY CONNECTED ACROSS SAID TUNNEL DIODE DEVICE AT THE INPUT SIGNAL FREQUENCY AND HAVING ITS HIGHEST IMPEDANCE VALUE AT THE FREQUENCY OF SAID INPUT SIGNAL, SAID HIGHEST IMPEDANCE VALUE BEING LESS THAN THE ABSOLUTE VALUE OF THE TUNNEL DIODE NEGATIVE RESISTANCE; AND MEANS FOR COUPLING A CONTROL SIGNAL TO SAID DIODE FOR VARYING THE BIAS THEREON AND THE GAIN OF SAID CIRCUIT IN RESPONSE TO SAID CONTROL SIGNAL.
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) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |