Patent ID: 8948326
Filing Date: 2015-02-03
Classification: H03D,H04B,H04L

Abstract:
1. An electrical circuit, comprising: a local oscillator configured to generate a first reference signal and a second reference signal having a predetermined phase shift with the first reference signal; an I-channel mixer configured to inject the first reference signal to an incoming signal and generate a first output, wherein the incoming signal includes an I-channel signal component and a Q-channel signal component; a compensation mixer configured to multiply the first output with a constant factor to generate a second output, wherein the second output includes the I-channel signal component and the Q-channel signal component; a first low pass filter configured to attenuate frequencies in the second output to generate a third output; and a first correcting filter configured to filter the third output to generate a fourth output, wherein the first correcting filter is configured to reduce a channel impulse response mismatch between the first low pass filter and a second low pass filter, wherein the second low pass filter is configured to attenuate frequencies in a Q-channel of the incoming signal.