AMPLIFYING DEVICE, SIGNAL PROCESSING DEVICE, WIRELESS COMMUNICATION DEVICE, CONNECTOR MOUNTING STRUCTURE, AND COAXIAL CONNECTOR

摘要

There is provided an amplifier apparatus and a signal processing apparatus that reduce a delay or distortion of a power supply voltage used for drain modulation. An amplifier apparatus 10 is an amplifier apparatus that performs drain modulation, and includes a printed circuit board 400 having a first principal surface 401a and a second principal surface 401b that face each other; an amplifier circuit 100 disposed on the first principal surface 400a; and a modulation power supply circuit 200 that supplies a variable power supply voltage for performing drain modulation, to the amplifier circuit 100. The modulation power supply circuit 200 has an output portion 250 that outputs the power supply voltage. The amplifier circuit 100 has an input portion 150 to which the power supply voltage is supplied. The output portion 250 is located on the side of the second principal surface 400b of the printed circuit board 400 and is connected to the input portion 150 through a conductor penetrating through the printed circuit board 400.