US3588746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wideband solid state frequency modulator with linear characteristics
Assignee: GTE Automatic Electric Laboratories Inc
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Filing: 1969-04-07
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Granted: 1971-06-28
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Expires: 1989-04-07
Abstract
Abstract A LINEAR FREQUENCY MODULATOR EMPLOYING A HIGH FREQUENCY TRANSISTORIZED MULTIVIBRATOR, THE COUPLING CAPACITOR OF WHICH IS LINEARLY CHARGED AND DISCHARGED BY A PAIR OF CONSTANT CURRENT GENERATORS, THE OUTPUT OF ONE OF WHICH IS VARIED BY THE MODULATING SIGNAL. THE LINEARITY OF THE MODULATION CHARACTERISTICS IS IMPROVED BY PROVIDING IN THE COLLECTOR CIRCUIT OF ONE OF THE MULTIVIBRATOR TRANSISTORS A LINEARIZATION NETWORK INCLUDING A RESISTOR AND AN INDUCTOR CONNECTED IN PARALLEL WITH EACH OTHER AND IN SERIES WITH A DIODE.
Inventors
- 👤 Agostino Luna
- 👤 Roberto Cafissi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:17
CPC Classifications
H; H03; H03C; H03C3/00
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |