| 摘要 |
<P>PROBLEM TO BE SOLVED: To acquire an amplifier output without complicated analog signal processing. <P>SOLUTION: An amplifier device 1 includes an amplifier 3, a digital signal processing unit 2 for outputting a signal to be amplified by the amplifier 3, and an analog filter 4 disposed on the output side of the amplifier 3. The digital signal processing unit 2 includes: a distortion compensation unit 15 for performing distortion compensation of the amplifier 3 on the basis of the output of the amplifier 3; a ΔΣ modulator unit 25 for ΔΣ modulating a signal to be amplified by the amplifier 3, to output a quantized signal. The amplifier 3 amplifies the quantized signal, and from the quantized signal, the analog filter 4 generates an analog signal. The digital signal processing unit 2 acquires the quantized signal output from the amplifier 3 to allow the distortion compensation unit 15 to perform distortion compensation. <P>COPYRIGHT: (C)2013,JPO&INPIT |
