Patent Number: 7,085,335

Title: Method and apparatus for reducing DC offsets in a communication system

Abstract: Methods and apparatuses for reducing DC offsets in a communication system are described. In a first aspect, a feedback loop circuit reduces DC offset in a wireless local area network (WLAN) receiver channel. The frequency response of the feedback loop circuit can be variable. In a second aspect, a circuit provides gain control in a WLAN receiver channel. First and second automatic gain control (AGC) amplifiers are coupled in respective portions of the receiver channel. Circuits for monitoring DC offset, and for providing control signals for controlling the frequency response of the DC offset reducing circuits are also provided.

Inventors: Rawlins; Gregory S. (Heathrow, FL), Rawlins; Michael W. (Lake Mary, FL)

Assignee: ParkerVision, Inc.

International Classification: H03D 1/04 (20060101)

Expiration Date: 8/01/02018