A radio frequency (RF) signal receiver for controlling a bias current and a method for controlling a bias current are provided. The RF signal receiver includes an antenna which receives an RF signal and an RF signal processing module which processes the received RF signal. The RF signal processing module includes an analog signal processing module which converts the received RF signal into an intermediate frequency (IF) signal and filters the IF signal to allow a frequency band corresponding to a user desired channel to pass and a digital signal processing module which demodulates the filtered signal and decodes the demodulated signal. The amplitude of a bias current required by the analog signal processing module is controlled by the digital signal processing module.