US3644779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capillary stage for microwave tr devices using static magnetic fields
Assignee: Westinghouse Electric Corp
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Filing: 1969-12-31
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Granted: 1972-02-22
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Expires: 1989-12-31
Abstract
Abstract Gaseous discharge TR switch in which two truncated cone electrodes extend inwardly from the broad sidewalls of a waveguide with the truncated ends in juxtaposition to form a discharge gap, the electrodes having a central bore with a capillary tube extending across the gap and including an ionizable gas and a magnetic field being disposed with its flux lines extending parallel to the axis of the tube and to the electric vectors of the microwave in the waveguide.
Inventors
- 👤 Harry Goldie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:54
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; G; G01; G01S; G01S7/00; G01S7/02; G01S7/03; G01S7/034; H03; H03K; H03K17/00; H03K17/51; H03K17/52
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A microwave switching device comprising a section of waveguide, a pair of electrodes ohmically connected to and extending inwardly from the walls of said waveguide to define a discharge gap between them, a closed container having walls substantially transparent to microwave energy, said container disposed adjacent said discharge gap, an ionizable halogen gas within said container and means for immersing said container in a static magnetic field of strength less than that required for cyclotron resonance of electrons in said discharge gap with the magnetic flux lines parallel to the electric vectors of microwave energy propagated in said microwave waveGuide section.
Claim 2
Dependent Claim
101 words
A microwave switching device comprising a section of waveguide, a pair of electrodes ohmically connected to and extending inwardly from the walls of said waveguide to define a discharge gap between them, a closed container having walls substantially transparent to microwave energy, said container disposed adjacent said discharge gap, an ionizable halogen gas within said container and means for immersing said container in a static magnetic field of strength less than that required for cyclotron resonance of electrons in said discharge gap with the magnetic flux lines parallel to the electric vectors of microwave energy propagated in said microwave waveGuide section.
Claim 3
Dependent Claim
26 words
The combination as set forth in claim 1, in which each of said electrodes have a recess in which a portion of said container is disposed.
Claim 4
Dependent Claim
32 words
The combination as set forth in claim 3, in which said recesses in said electrodes are bores and in which said container is an elongated capillary tube extending across said discharge gap.
Claim 5
Dependent Claim
29 words
The combination as set forth in claim 1, in which said electrodes are frustoconical in shape with their bases forming a part of the ohmic contact with said walls.
Claim 6
Dependent Claim
23 words
The combination as set forth in claim 1, in which said discharge gap is located in a tuned iris of said waveguide section.
Claim 7
Dependent Claim
39 words
The combination as set forth in claim 1, in which said waveguide section has a rectangular cross section and is operating in the dominant TEo,1 mode and said electrodes are connected to the broad walls of said waveguide section.
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |