Duplexer for simultaneous transmit and receive radar systems
US7633435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2005 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Oct 25, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/034
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An enhanced duplexer (1) which includes a combination of high dynamic range (HDR) amplifiers (11, 17) and a naovel signal cancellation circuit topology (15). Return signals from the circulator (3) are fed into the first HDR amplifier (11). A portion of the transmit signal is sampled with a directional coupler (7) and amplified with a second HDR amplifier (17) and then combined with the output of the first HDR amplifier (11) using a second directional coupler (13). The gain and phase of the second io amplifier (17) are adjusted so the leakage signals are canceled (19, 21) to enable a radar system to simultaneously transmit and receive signals to and from an antenna with increased sensitivity of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.