In a double-tuning circuit including a primary tuning circuit having a first inductor (1) and a first variable capacitive element (3) connected in parallel and a secondary tuning circuit having a second inductor (2) and a second variable capacitive element (4) connected in parallel, a fixed part of a copper-foil pattern (11) is connected to a connection point at which the double-tuning circuit isconnected to an input terminal of a frequency mixing circuit (24), and a tip part (11a) of the copper-foil pattern (11) extends to near the first inductor (1), whereby a trap circuit for attenuating an image frequency component is formed. A pattern (L) is formed between a ground-side terminal of the first inductor (1) and the ground, and a capacitor (31) is connected between a connection point atwhich the first inductor (1) is connected to one terminal of the pattern (L) and a ground-side terminal of the second variable capacitive element (4).