Feedback cancellation system and method
US8081945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2008 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Apr 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/15585
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method for detecting antenna coupling and for providing feedback cancellation in response to the antenna coupling includes a signal feedback cancellation circuit configured to be coupled between a signal receiver and a signal transmitter. The feedback cancellation circuit is responsive to received signals, amplified signals and the detection of signal coupling between a receiving antenna any transmitting antenna, for providing a feedback cancellation signal to a signal amplifier. The feedback cancellation circuit may employ time domain or frequency domain methods. In the case of a time domain method, the feedback cancellation circuit may further include a White noise generator which serves to the tune or adjust the feedback cancellation circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.