Method and apparatus for RF carrier feedthrough suppression
US7412006B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2003 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Aug 20, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D3/008
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method includes performing a search method to determine a pair of receiver path correction signals, performing the search method to determine a pair of transmitter path correction signals, and using the pairs of receiver path and transmitter path correction signals to suppress a carrier signal. An apparatus includes a first pair of summers, an upconverter circuit coupled to the first pair of summers, a multiplexer coupled to the upconverter circuit, to a ground, and to an RF front end, a downconverter circuit coupled to the multiplexer, a second pair of summers coupled to the downconverter circuit, and a correction circuit coupled to the first and second pairs of summers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.