An IC card reading apparatus supporting different communication standards and providing users with excellent usability. Based on an instruction from a CPU, a linear power amplifier supplies, in a case of transmitting a radio signal of Type A, an antenna circuit with a power supply voltage of Type A supplied from a power supply switch circuit, and supplies, in a case of transmitting a radio signal of Type B, the antenna circuit with a power supply voltage of Type B supplied from the power supply switch circuit. In this way, both an IC card of Type A and an IC card of Type B can be read.