US3571768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave resonator coupling having two coupling apertures spaced a half wavelength apart
Assignee: Motorola Solutions Inc
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Filing: 1969-09-25
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Granted: 1971-03-23
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Expires: 1989-09-25
Abstract
Abstract Coupling is increased between microwave resonators by providing a plurality of holes in a common wall thereof, the holes being spaced one-half wavelength of the resonant frequency of the resonator.
Inventors
- 👤 Joseph C Gundry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:41
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/06; H01P1/00; H01P1/20; H01P1/201; H01P1/205; H01P1/2053
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
55 words
A plurality of coupled resonators: each of said resonators having an outside wall; a portion of the wall of at least two resonators being in common; there being a plurality of holes in said common wall; and the distance between said holes being equal to a half wavelength of the frequency of the said resonators.
Claim 2
Dependent Claim
55 words
A plurality of coupled resonators: each of said resonators having an outside wall; a portion of the wall of at least two resonators being in common; there being a plurality of holes in said common wall; and the distance between said holes being equal to a half wavelength of the frequency of the said resonators.
Claim 3
Dependent Claim
18 words
The invention of claim 1 in which said resonators comprise an outside wall and a concentric internal post.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |