Patent ID: 7466764
Filing Date: 2008-12-16
Classification: H03F

Abstract:
1. A delay regulating device which is used in a distortion compensation device for calculating an error signal between a first signal and a second signal and updating a distortion compensation coefficient from the error signal, and adjusts an amount of delay of the first signal and the second signal, comprising: a correlation value calculation unit for calculating a correlation value between the first signal and the second signal; an error signal calculation unit for calculating an error signal between the first signal and the second signal; a first delay unit for adjusting a relative amount of delay between the first signal and the second signal; a second delay unit for adjusting the relative amount of delay between the first signal and the second signal in a unit smaller than the first delay unit; and first setting using the first delay unit the relative amount of delay such that the correlation value is maximum, second adjusting using the second delay unit the relative amount of delay such that the correlation value is maximum, and third readjusting using the second delay unit the relative amount of delay such that the error signal is minimum.