Patent ID: 8270535

Claim:
An electronic device comprising: a direct conversion receiver; and a clock synchronization circuit which operates in synchronization with a clock signal having a clock frequency f clk , the direct conversion receiver including: a frequency converter circuit for carrying out a frequency conversion by mixing a received signal and a local oscillator signal so as to convert the received signal into a baseband signal; and a direct-current offset canceller circuit for removing a direct-current offset contained in a signal which has been subjected to the frequency conversion by the frequency converter circuit, said electronic device selecting, according to a lower limit frequency fD 1 and an upper limit frequency fD 2 of the received signal, a value for an integer N or a value for the clock frequency f clk so as to satisfy: f LO =N×f clk (1); and ( N− 1)× f clk <fD 1 <N×f clk <fD 2<( N+ 1)× f clk (2), where f LO represents a frequency of the local oscillator signal.