Patent ID: 7953192
Filing Date: 2011-05-31
Classification: H03G

Abstract:
1. A receiver comprising: a programmable gain amplifier configured to amplify a received signal, the programmable gain amplifier comprising: an ADC configured to convert an output signal of the programmable gain amplifier to a digital signal; a digital filter configured to filter an output signal of the ADC; a received power estimator configured to estimate a received power from at least one of the output signal of the ADC or an output signal of the digital filter; and a gain controller configured to control a gain of the programmable gain amplifier according to the estimated received power, wherein the digital filter is configured to substitute a value of the digital filter with a gain compensated value for a predetermined delay time after a change in the gain of the programmable gain amplifier, the receiver further comprising a multiplier coupled between the ADC and the digital filter to multiply a reciprocal of the gain of the second programmable gain amplifier.