Patent US4303899A successfully refreshed from Google Patents.
US4303899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matched high Q, high frequency resonators
Assignee: United States Department of the Army
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Filing: 1980-05-05
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Granted: 1981-12-01
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Expires: 2000-05-05
Abstract
Abstract The resonator is formed with a primary line which is slightly less than a ltiple of a half wavelength long, a tee, and a matching stub. The primary line and the stub are adjustable to make the total length a multiple of one half wavelength. A mechanical link can be connected across the two adjustable lengths so as to maintain a total length of a multiple integral of one half wavelength.
Inventors
- 👤 Thomas A. Barley
- 👤 Gustaf J. Rast, Jr.
- 👤 James R. Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:59
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
A high-frequency resonator comprising a tee connection having first and second arms extended from an in/out port; first and second sliding joints on the ends of said first and second arms respectively; third and fourth arms having one end connected to said first and second sliding joints respectively; the other ends of said third and fourth arms being connected to electrical short circuits; and said third and fourth arms being moveably mounted on said sliding joints so as to vary the length of said arms.
Claim 2
Dependent Claim
85 words
A high-frequency resonator comprising a tee connection having first and second arms extended from an in/out port; first and second sliding joints on the ends of said first and second arms respectively; third and fourth arms having one end connected to said first and second sliding joints respectively; the other ends of said third and fourth arms being connected to electrical short circuits; and said third and fourth arms being moveably mounted on said sliding joints so as to vary the length of said arms.
Claim 3
Dependent Claim
18 words
A resonator as set forth in claim 1 wherein said arms are made up of transmission line components.
Claim 4
Dependent Claim
32 words
A resonator as set forth in claim 2 further comprising a mechanical linking device connected to said third and fourth arms so as to maintain a predetermined distance between said short circuits.
Claim 5
Dependent Claim
29 words
A resonator as set forth in claim 3 wherein said predetermined distance is a multiple of a half wavelength of a frequency in which said resonator is to resonate.
References Cited (Backward Citations)
US2605356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-30 | 1985-06-01 | 1985-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-30 | 1989-06-01 | 1989-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-30 | 1993-06-01 | 1993-12-01 | $7700.00 | Window Closed / Lapsed |