Transmitter/receiver
US4777654A · kind A · utility
14Cited by
7References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1987 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Nov 19, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0017
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A combined duplexer/mixer especially for use in an FMCW millimetric radar system has a waveguide section containing a fin line or suspended strip structure for responding to the linearly polarized radar return signal passing through the section in one direction while permitting passage of the orthogonally polarized, outgoing signal passing in the other direction. The fin line is coupled via double balanced mixer diodes to an IF output line to produce an IF signal by mixing the return signal with a portion of the outgoing signal tapped off by a field distorting probe, ridge section or like coupling means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.