Multiple channel rotary joint
US4117426A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1976 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Dec 30, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/068
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multiple channel microwave rotary joint is disclosed which is a toroidal cavity having first and second halves each with a bearing surface for rotation about the axis of the toroid. A plurality of input ports are mounted about the external cylindrical surface of the first half for generating a plurality of modes within the toroidal cavity. A first hybrid network is coupled to the inut ports for providing the proper phase input signals for generating the various modes. A second hybrid network is connected to a plurality of output probes mounted to the second half of the toroidal cavity. The rotary joint has a passageway which is axially aligned for allowing a plurality of multichannel rotary joints to be "stacked" and the interconnecting microwave cables or waveguides to pass through the passageways.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.