Amplifying device and signal processing device

摘要

Signal timing adjustment in an amplifying device is appropriately performed by phase adjustment by a digital filter. The amplifying device includes an amplifier; an amplitude-voltage converting unit 12 that performs a desired process on a signal relating to operation of the amplifier, whereby the signal is band-broadened; and a timing adjusting unit 15a that performs timing adjustment of the signal to be provided to the amplifier, by phase adjustment by a digital filter. The timing adjusting unit 15a performs the timing adjustment of the signal at a stage before the signal is band-broadened by the amplitude-voltage converting unit 12.

主权项

1. An amplifying device comprising:
an amplifier; a signal processing unit that converts an envelope signal of the input signal to be provided to an input of the amplifier into a power supply voltage value of the amplifier, and band-broadens the envelope signal upon the conversion; a timing adjusting unit that performs timing adjustment on the envelope signal by phase adjustment by a digital filter; and a detecting unit that performs detection on the input signal to generate the envelope signal; wherein the timing adjusting unit is provided to perform the timing adjustment of the envelope signal at a stage before the envelope signal is band-broadened by the signal processing unit, and the detecting unit is configured to output an envelope signal generated considering a value obtained by computation of (I2+Q2) as an amplitude value, when values of an I signal and a Q signal forming the input signal are represented by I and Q, respectively.