Patent US3418591A successfully refreshed from Google Patents.
US3418591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low noise amplifier with minimum cross modulation distortion
Assignee: Raytheon Co
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Filing: 1966-06-13
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Granted: 1968-12-24
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Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Gaythor D Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:37
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/26; H03F1/34; H03F2200/00; H03F2200/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
AN AMPLIFIER CIRCUIT COMPRISING: FIRST, SECOND, AND THIRD TRANSISTORS EACH HAVING AN EMITTER ELECTRODE, A BASE ELECTRODE, AND A COLLECTOR ELECTRODE; THE EMITTER ELECTRODES OF EACH OF SAID TRANSISTORS BEING COUPLED TOGETHER; MEANS FOR APPLYING A SIGNAL TO BE AMPLIFIED BETWEEN THE BASE AND EMITTER ELECTRODES OF SAID FIRST TRANSISTOR; FIRST CIRCUIT MEANS INTERCOUPLING THE COLLECTOR ELECTRODE OF SAID FIRST TRANSISTOR WITH THE BASE ELECTRODE OF SAID SECOND TRANSISTOR; SECOND CIRCUIT MANS INTERCOUPLING THE COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR WITH THE BASE ELECTRODE OF SAID THIRD TRANSISTOR; A FIRST INDUCTOR HAVING ONE TERMINAL COUPLED TO THE COLLECTOR ELECTRODE OF SAID FIRST TRANSISTOR; A SECOND INDUCTOR HAVING ONE TERMINAL COUPLED TO THE COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR; MEANS FOR APPLYING OPERATING POTENTIALS TO THE OTHER TERMINAL OF EACH OF SAID FIRST AND SECOND INDUCTORS, TO THE COLLECTOR ELECTRODE OF SAID THIRD TRANSISTOR, AND TO THE EMITTER ELECTRODE OF SAID FIRST, SECOND, AND THIRD
Claim 2
Dependent Claim
154 words
AN AMPLIFIER CIRCUIT COMPRISING: FIRST, SECOND, AND THIRD TRANSISTORS EACH HAVING AN EMITTER ELECTRODE, A BASE ELECTRODE, AND A COLLECTOR ELECTRODE; THE EMITTER ELECTRODES OF EACH OF SAID TRANSISTORS BEING COUPLED TOGETHER; MEANS FOR APPLYING A SIGNAL TO BE AMPLIFIED BETWEEN THE BASE AND EMITTER ELECTRODES OF SAID FIRST TRANSISTOR; FIRST CIRCUIT MEANS INTERCOUPLING THE COLLECTOR ELECTRODE OF SAID FIRST TRANSISTOR WITH THE BASE ELECTRODE OF SAID SECOND TRANSISTOR; SECOND CIRCUIT MANS INTERCOUPLING THE COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR WITH THE BASE ELECTRODE OF SAID THIRD TRANSISTOR; A FIRST INDUCTOR HAVING ONE TERMINAL COUPLED TO THE COLLECTOR ELECTRODE OF SAID FIRST TRANSISTOR; A SECOND INDUCTOR HAVING ONE TERMINAL COUPLED TO THE COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR; MEANS FOR APPLYING OPERATING POTENTIALS TO THE OTHER TERMINAL OF EACH OF SAID FIRST AND SECOND INDUCTORS, TO THE COLLECTOR ELECTRODE OF SAID THIRD TRANSISTOR, AND TO THE EMITTER ELECTRODE OF SAID FIRST, SECOND, AND THIRD
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |