Patent ID: 9203447
Filing Date: 2015-12-01
Classification: H03F,H04B

Abstract:
1. A distortion compensating device for compensating distortion of an amplifier, the distortion compensating device comprising: a multiplying unit that multiplies an input transmission signal by an input distortion compensation coefficient; a generating unit that generates an address value corresponding to power of the transmission signal; an adjusting unit that, when the generated address value is higher than a set threshold, retrieves a distortion compensation coefficient corresponding to the set threshold from a storage unit and inputs the retrieved distortion compensation coefficient to the multiplying unit, and, when the generated address value is equal to or lower than the set threshold, retrieves a distortion compensation coefficient corresponding to the generated address value from the storage unit and inputs the retrieved distortion compensation coefficient to the multiplying unit; and a threshold calculating unit that calculates a threshold based on the generated address value and updates the set threshold with the calculated threshold.