Patent ID: 8755757
Filing Date: 2014-06-17
Classification: H03F,H04B,H04L

Abstract:
1. An amplifier apparatus including an amplifier and a digital pre-distorter (hereinafter, referred to as “DPD” in the claims) that performs a distortion compensation process of the amplifier, the amplifier apparatus comprising: a transmitting analog circuit that converts a digital output signal from the DPD to an analog signal, up-converts the analog signal, and inputs the analog signal to the amplifier, the transmitting analog circuit including the amplifier; a returning analog circuit that adjusts an analog output signal from the amplifier to a predetermined amplitude, down-converts the analog output signal to a digital signal, and inputs the digital signal to the DPD; and a power measurement circuit that measures output power of the analog output signal from the amplifier, wherein a measured value of the power measurement circuit is inputted to the DPD.