Patent ID: 8000222

Claim:
A wireless communication device comprising: a converting circuit which converts an analog signal having an in-phase component and a quadrature component and supplied from an antenna into a digital signal having a real part and an imaginary part of complex number respectively; a discrete Fourier transformer which converts the real part and the imaginary part of the digital signal obtained in the converting circuit from a time domain to a frequency domain; a separating circuit which separates the digital signal converted to the frequency domain by the discrete Fourier transformer into a sum of a symmetrical component of the real part and an antisymmetrical component of the imaginary part of the digital signal and a sum of the antisymmetrical component of the real part and the symmetrical component of the imaginary part of the digital signal; and a correcting unit which corrects a value of the sum of the antisymmetrical component of the real part and the symmetrical component of the imaginary part created in the separating circuit, according to a deviation of the imaginary part from the real part at sampling timing occurring at analog-digital conversion in the converting circuit or a deviation of amplitude and phase between the real part and the imaginary part occurring across the antenna to the converting circuit.