COMPLEX NUMBER TRANSVERSAL FILTER AND COMPLEX FREQUENCY CONVERTER

摘要

A complex number transversal filter and a complex frequency converter are provided to maintain a phase difference of 90 degrees between a real part signal and an imaginary part signal by driving an input side and an output side in a balance method. A complex number transversal filter includes a first surface acoustic wave filter(121) and a second surface acoustic wave filter(126). The first surface acoustic wave filter(121) generates a real part of a complex signal by inputting an actual number. The second surface acoustic wave filter(126) generates an imaginary part of the complex number signal. Each surface acoustic wave filter drives an input side of the actual number signal or an output side of the complex number signal in a balance method.