To materialize making compact, lightweight, thinning, etc., of a receiver, by enabling tuning frequency to follow the objective received frequency, without using a variable condenser or a varactor diode.

This receiver is equipped with a plurality of capacitors C1a, C1b,..., and C1n for constituting the tuning circuit of a filter on input side together with a coil L2, and the tuning frequency can be varied, according to the capacitive value of a selected capacitor, without using a large element such as a variable capacitor, a varactor diode, etc., by selectively using them by the changeover of analog switches SW1a, SW1b,..., SW1n, whereby it is can be made to follow the objective received frequency, and the plural capacitors C1a, C1b,..., Cin can be integrated within an IC chip 20.