US3559088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor amplifier with automatic gain control
Assignee: Motorola Solutions Inc
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Filing: 1969-08-07
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Granted: 1971-01-26
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Expires: 1989-08-07
Abstract
Abstract A TWO-STAGE RF TRANSISTOR AMPLIFIER, OPERATING WITH A CLASS A FIRST STAGE AND A CLASS C SECOND STAGE HAS A CONSTANT DC BIASING VOLTAGE ON THE BASE OF THE INPUT STAGE TRANSISTOR AND A DC FEEBACK PATH ESTABLISHED BY A COMMON-EMITTER RESISTOR FOR THE TRANSISTORS OF BOTH STAGES, IN ORDER TO MAINTAIN THE RF POWER OUTPUT CONSTANT OVER A WIDE RANGE OF RF INPUT AND INDEPENDENT OF THE GAIN OF THE INDIVIDUAL TRANSISTORS.
Inventors
- 👤 Donald L Booth
- 👤 William A Schilb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:36
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3036; H03G3/3042
Claims Analysis
Total Claims: 0
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |