US3562666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-resonant lsa microwave oscillator devices
Assignee: Berkeley Heights
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Filing: 1969-06-23
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Granted: 1971-02-09
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Expires: 1989-06-23
Abstract
Abstract A CYLINDRICAL BULK-EFFECT DIODE OF APPROPRIATE DOPING AND DIAMETER IS SELF-RESONANT AT THE LSA FREQUENCY, THEREBY ELIMINATING THE NEED FOR THE NORMALLY REQUIRED EXTERNAL RESONATOR OF AN LSA OSCILLATOR. IF THE DIODE IS GALLIUM ARSENIDE, THE PRODUCT OF FREQUENCY AND DIAMETER SHOULD BE 2.2X109 CM./SEC. AND THE RATIO OF DOPING TO FREQUENCY SHOULD BE 5.4X104 SEC./CM.3. THESE VALUES CAN BE ADJUSTED BY SURROUNDING THE DIODE WITH AN APPROPRIATE HOLLOW DIELECTRIC CYLINDER. WHEN PROPERLY BIASED, THE DIODE RADIATES MICROWAVE ENERGY OF THE LSA FREQUENCY.
Inventors
- 👤 Daniel L Rode
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:31
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |