Patent US2309073A successfully refreshed from Google Patents.
US3079569A
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Low noise amplifier input network
Assignee: AT&T Inc
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Filing: 1961-11-30
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Granted: 1963-02-26
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Expires: 1981-11-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Bernard C De Loach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:22
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/26; H03F1/28; H03F7/00; H03F7/04; H03F2200/00; H03F2200/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN COMBINATION, A SOURCE OF WAVE ENERGY AT A FREQUENCY FS HAVING AN OUTPUT CONDUCTANCE G1, A LOAD HAVING AN INPUT CONDUCTANCE G2, AND MEANS FOR IMPROVING THE SIGNAL-TO-NOISE RATIO AT SAID LOAD INCLUDING MEANS FOR CONNECTING SAID SOURCE TO SAID LOAD COMPRISING A SECTION OF TRANSMISSION LINE WHOSE ELECTRICAL LENGTH IS AN ODD MULTIPLE OF QUARTER WAVELENGTHS AT SAID FREQUENCY FS, AND A LOW NOISE NEGATIVE CONDUCTANCE G EQUAL TO -G1 CONNECTED IN SHUNT WITH SAID SOURCE BETWEEN SAID SOURCE AND SAID LINE.
Claim 2
Dependent Claim
84 words
IN COMBINATION, A SOURCE OF WAVE ENERGY AT A FREQUENCY FS HAVING AN OUTPUT CONDUCTANCE G1, A LOAD HAVING AN INPUT CONDUCTANCE G2, AND MEANS FOR IMPROVING THE SIGNAL-TO-NOISE RATIO AT SAID LOAD INCLUDING MEANS FOR CONNECTING SAID SOURCE TO SAID LOAD COMPRISING A SECTION OF TRANSMISSION LINE WHOSE ELECTRICAL LENGTH IS AN ODD MULTIPLE OF QUARTER WAVELENGTHS AT SAID FREQUENCY FS, AND A LOW NOISE NEGATIVE CONDUCTANCE G EQUAL TO -G1 CONNECTED IN SHUNT WITH SAID SOURCE BETWEEN SAID SOURCE AND SAID LINE.
References Cited (Backward Citations)
US2775658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |