Patent ID: 8514972

Claim:
An apparatus for compensating for a delay mismatch between an amplitude component signal and a phase component signal, comprising: an amplitude path delay obtainer configured to obtain amplitude-delay information on a delay occurring in a propagation path of an amplitude component signal; a phase path delay obtainer configured to obtain phase-delay information on a delay occurring in a propagation path of a phase component signal; a delay controller configured to calculate and output a difference between the obtained amplitude path delay and the obtained phase path delay; a variable delayer configured to compensate for a delay by changing a delay value on the basis of the delay difference output from the delay controller; a first signal detector configured to detect the amplitude component signal in the amplitude component signal propagation path before the delay occurs; and a second signal detector configured to detect the amplitude component signal in the amplitude component signal propagation path after the delay occurs, wherein the amplitude path delay obtainer obtains the amplitude-delay information on the delay on the basis of the detection results of the first signal detector and the second signal detector.