Transmit/receive isolation assembly for a very small aperture satellite terminal
US5578972A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1995 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Mar 17, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/024
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for coupling a receiver and a transmitter to a single antenna via a feedhorn so as to allow for the simultaneous transmission and reception of signals. The apparatus is an integrally formed single unit which includes a polarizer, a circular waveguide section, a transmitter waveguide section, and a receiver waveguide section. The polarizer has a first, second and third port and is operative to separate and combine a first and second signal which are orthogonally polarized. The circular waveguide section has a first port formed integral with the first port of the polarizer and a second port for coupling to the antenna via a feedhorn. The circular waveguide section is operative for transmitting or receiving the first and second signals. The transmitter waveguide section has a first port formed integral with the second port of the polarizer, and a second port for coupling to the transmitter. The receiver waveguide section has a first port formed integral with the third port of the polarizer, and a second port for coupling to the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.