US3204192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low insertion loss unilateralization structure
Assignee: Westinghouse Electric Corp
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Filing: 1961-02-15
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Granted: 1965-08-31
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Expires: 1981-02-15
Abstract
No abstract record available.
Inventors
- 👤 Irving F Barditch
- 👤 Bento Robert
- 👤 Freeman William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:39
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/189; H03F3/19; H03F3/191; H03F3/195
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A UNILATERALIZATION DEVICE COMPRISING, IN COMBINATION, INPUT CIRCUIT MEANS INCLUDING A GROUND TERMINAL, FIRST TRANSISTOR MEANS CONNECTED AS A GROUNDED EMITTER OPERATIVELY CONNECTED TO THE INPUT CIRCUIT MEANS FOR AMPLIFYING A SIGNAL APPLIED TO THE INPUT CIRCUIT MEANS AND SHIFTING THE PHASE OF SIGNAL SUBSTANTIALY 180*, SECOND TRANSISTOR MEANS CONNECTED AS AN EMITTER FOLLOWER AND HAVING THE EMITTER THEREOF CONNECTED TO THE INPUT CIRCIUT MEANS, OTHER CIRCUIT MEANS INCLUDING PHASE SHIFT MEANS OPERATIVELY CONNECTING THE OUTPUT OF THE FIRST TRANSISTOR MEANS TO THE INPUT OF THE SECOND TRANSISTOR MEANS, AND THIRD TRANSISTOR MEANS CONSTITUTING AN OUTPUT ISOLATION DEVICE, SAID THIRD TRANSISTOR MEANS BEING OPERATIVELY CONNECTED TO SAID OTHER CIRCUIT MEANS WHEREBY SIGNALS LEAKING THROUGH THE THIRD TRANSISTOR MEANS IN A REVERSE DIRECTION ARE EFFECTIVELY OFFERED A LOW IMPEDANCE TO GROUND AND ARE THEREBY ATTENUATED AND DO NOT APPEAR IN ANY SUBSTANTIAL AMPLITUDE IN SAID INPUT CIRCUIT MEANS.
Claim 2
Dependent Claim
147 words
A UNILATERALIZATION DEVICE COMPRISING, IN COMBINATION, INPUT CIRCUIT MEANS INCLUDING A GROUND TERMINAL, FIRST TRANSISTOR MEANS CONNECTED AS A GROUNDED EMITTER OPERATIVELY CONNECTED TO THE INPUT CIRCUIT MEANS FOR AMPLIFYING A SIGNAL APPLIED TO THE INPUT CIRCUIT MEANS AND SHIFTING THE PHASE OF SIGNAL SUBSTANTIALY 180*, SECOND TRANSISTOR MEANS CONNECTED AS AN EMITTER FOLLOWER AND HAVING THE EMITTER THEREOF CONNECTED TO THE INPUT CIRCIUT MEANS, OTHER CIRCUIT MEANS INCLUDING PHASE SHIFT MEANS OPERATIVELY CONNECTING THE OUTPUT OF THE FIRST TRANSISTOR MEANS TO THE INPUT OF THE SECOND TRANSISTOR MEANS, AND THIRD TRANSISTOR MEANS CONSTITUTING AN OUTPUT ISOLATION DEVICE, SAID THIRD TRANSISTOR MEANS BEING OPERATIVELY CONNECTED TO SAID OTHER CIRCUIT MEANS WHEREBY SIGNALS LEAKING THROUGH THE THIRD TRANSISTOR MEANS IN A REVERSE DIRECTION ARE EFFECTIVELY OFFERED A LOW IMPEDANCE TO GROUND AND ARE THEREBY ATTENUATED AND DO NOT APPEAR IN ANY SUBSTANTIAL AMPLITUDE IN SAID INPUT CIRCUIT MEANS.
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |