Patent ID: 7054607
Filing Date: 2006-05-30
Classification: H04B

Abstract:
1. A method for receiving comprising: blocking a signal path between a receive antenna and a mixer within an RF section of a wireless receiver by deactivating an RF low-noise amplifier (LNA) within the signal path; estimating a DC offset at the output of the RF section of the wireless receiver while the signal path is blocked; and subsequently using the estimated DC offset to reduce a DC component at the output of the RF section, wherein the blocking and the estimating are performed within time intervals between received signal bursts of time-division multiple access (TDMA) signals, and wherein the method further comprises: deactivating a local oscillator (LO) and a baseband frequency variable gain amplifier (VGA) within the RF section during at least a portion of the time intervals between the received signal bursts to reduce energy consumption, the LO and the baseband frequency VGA to remain activated during the estimating.