Patent US3573659A successfully refreshed from Google Patents.
US3573659A
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Ferrimagnetically tunable gunn oscillator
Assignee: Lockheed Martin Tactical Systems Inc
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Filing: 1969-02-20
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Granted: 1971-04-06
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Expires: 1989-02-20
Abstract
Abstract A very wide frequency tuning (5.8 to 13.0 GHz) Gunn effect oscillator using the properties of a ferrimagnetic resonator sphere as a tuning element.
Inventors
- 👤 Michael Dydyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:22
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/142
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
37 words
A ferrimagnetically tuned Gunn effect oscillator comprising: a Gunn-type diode, a ferrimagnetic resonator, means providing a variable magnetic field passing through said ferrimagnetic resonator, and a length of transmission line interconnecting said diode and said ferrimagnetic resonator.
Claim 2
Dependent Claim
37 words
A ferrimagnetically tuned Gunn effect oscillator comprising: a Gunn-type diode, a ferrimagnetic resonator, means providing a variable magnetic field passing through said ferrimagnetic resonator, and a length of transmission line interconnecting said diode and said ferrimagnetic resonator.
Claim 3
Dependent Claim
16 words
Structure in accordance with claim 1, including a bypass capacitor supplying bias voltage for said diode.
Claim 4
Dependent Claim
17 words
Structure in accordance with claim 1, in which said length of transmission line is of microstrip type.
Claim 5
Dependent Claim
19 words
Structure in accordance with claim 1, in which said ferrimagnetic resonator is in the form of a YIG sphere.
References Cited (Backward Citations)
US3268838A
Cited
US3336535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |