Method and system for removing radio frequency direct current offset in signal
US7881687B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Jun 11, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/063
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention provide a method and a system for removing a Radio Frequency (RF) Direct Current (DC) offset in a signal. The method includes: subtracting a canceling DC from a signal carrying an RF DC offset and generating an RF DC offset residual; outputting the signal when the RF DC offset residual in the signal is zero; adjusting the canceling DC according to the RF DC offset residual in the signal if the RF DC offset residual is not zero. The system includes a receiver, an RF DC offset canceling unit, a determining unit, a canceling DC adjusting unit, and an output unit. With embodiments of the present invention, the RF DC offset in the signal may be effectively removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.