Receiver, wireless device and method for cancelling a DC offset component
US7778358B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2007 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Feb 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A receiver includes a memory for storing DC offset amounts generated by an analog circuit; an amplifier; a DC offset amount generator for generating a first offset value and a second offset value to be removed from the received signal amplified at the amplifier; a first DC offset component-removing unit for removing the first DC offset value from the received signal before the amplifier; a second DC offset component-removing unit for removing the second DC offset value from the received signal after the amplifier; and an updating unit for updating the DC offset amount stored in the memory in view of the second DC offset value generated by the DC offset amount generator. A maximum value of the second DC offset value is set larger than a multiplication value of a gain of the amplifier by a minimum resolution value of the first DC offset value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.