Automatic gain control and offset correction
US6516185B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 2000 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | May 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D3/008
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A direct conversion type transceiver system incorporates an offset correction and automatic gain control system. The automatic gain control system includes an amplifier amplifying a baseband signal which is directly converted from a received incoming RF signal, a feedback offset canceller controllably canceling DC offset, an automatic gain controller controlling gain of the amplifier, and a feed forward offset canceller coupled to a signal peak detector. The signal peak detector controlling the automatic gain controller and the feed forward offset canceller simultaneously, the feed forward offset canceller further canceling the DC offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.