US4039974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial radio frequency switch having integral filter
Assignee: Raytheon Co
•
Filing: 1975-09-04
•
Granted: 1977-08-02
•
Expires: 1995-09-04
Abstract
Abstract A coaxial transmission line switch is disclosed, such switch having a rotatable coupling element reactively coupled between an input coaxial transmission line and a selected one of a plurality of output coaxial transmission lines. The rotatable conducting element, the input coaxial transmission line, and the plurality of output coaxial transmission lines have shunt connected radio frequency stubs thereby forming a filter integrally with the coaxial transmission line switch.
Inventors
- 👤 Neill V. Clark
- 👤 Homer G. Holzgrafe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:34
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/12; H01P1/125
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
140 words
A coaxial transmission line switch comprising: a. a housing for such switch; b. an input coaxial transmission line; c. a plurality of output coaxial transmission lines, such housing providing outer conductors for the input coaxial transmission line and the plurality of output coaxial transmission lines; d. a radio frequency filter, comprising; a plurality of radio frequency stubs having first ends thereof connected to center conductors of the input coaxial transmission line and the plurality of output coaxial transmission lines; and a rotatable coupling element, disposed in the housing, reactively coupled between the input coaxial transmission line and a selected one of a plurality of output coaxial transmission lines, such filter being formed integrally with the switch to filter signals fed to the input coaxial transmission line and coupled to the selected one of the plurality of output coaxial transmission lines.
Claim 2
Dependent Claim
140 words
A coaxial transmission line switch comprising: a. a housing for such switch; b. an input coaxial transmission line; c. a plurality of output coaxial transmission lines, such housing providing outer conductors for the input coaxial transmission line and the plurality of output coaxial transmission lines; d. a radio frequency filter, comprising; a plurality of radio frequency stubs having first ends thereof connected to center conductors of the input coaxial transmission line and the plurality of output coaxial transmission lines; and a rotatable coupling element, disposed in the housing, reactively coupled between the input coaxial transmission line and a selected one of a plurality of output coaxial transmission lines, such filter being formed integrally with the switch to filter signals fed to the input coaxial transmission line and coupled to the selected one of the plurality of output coaxial transmission lines.
Claim 3
Dependent Claim
33 words
The switch recited in claim 1 wherein the plurality of stubs have second ends connected to the housing to provide at least partial support of the inner conductors connected thereto within the housing.
Claim 4
Dependent Claim
25 words
The switch recited in claim 2 wherein the plurality of stubs are arranged to provide a heat conduit between the center conductors and the housing.
Claim 5
Dependent Claim
18 words
The switch recited in claim 3 wherein the filter formed by the filter means is a Tchebychef filter.
Claim 6
Dependent Claim
33 words
The switch recited in claim 4 including a radio frequency stub rotatably mounted within the housing and connected to the rotatable coupling element, such rotatable stub being electrically short circuited to the housing.
References Cited (Backward Citations)
US2426186A
Cited
US2452202A
Cited
US2968772A
Cited
US3132311A
Cited
US3309632A
Cited
US3530504A
Cited
US3969690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |