Signal receiving circuit and calibration method thereof

A signal receiving circuit configured to receive an input signal, the signal receiving circuit comprising:

• a radio frequency (RF) front-end circuit configured to down-convert the input signal to generate a down-converted signal;
• a filter circuit coupled to the RF front-end circuit and configured to filter the down-converted signal to generate a filtered signal;
• an amplifier circuit coupled to the filter circuit and configured to amplify, according to a control signal, the filtered signal with a gain to generate an amplified signal;
• an analog-to-digital converter (ADC) coupled to the amplifier circuit and configured to convert the amplified signal into a first digital code;
• a compensation circuit coupled to the amplifier circuit and configured to generate a compensation code according to at least one of the control signal and the gain;
• an adder circuit coupled to the compensation circuit and the ADC and configured to generate a second digital code according to the compensation code and the first digital code;
• and
• a control circuit coupled to the amplifier circuit and the adder circuit and configured to generate the control signal according to the second digital code.