PURPOSE: To reduce the leakage of a local oscillation signal for satellite broadcast when terrestrial broadcast is received by providing a terrestrial broadcast high frequency signal input terminal and a satellite broadcast high frequency signal (which goes to a first intermediate frequency in bands 1036-1331MHz in the reception of the satellite broadcast) input terminal, separately.

CONSTITUTION: The cathodes of diodes D1, D2 and D3, D4 are connected to the other terminals of capacitors 1, 2 connected to the balance terminal of a balun transformer T, respectively, and the anodes of the diodes D1, D3 to a control terminal C1 via resistors R5, R6, respectively, and diodes D5, D6 connected in series in a forward direction via capacitors 9, 10 to the anodes of the diodes D1, D3, and an intermediate point is set as a signal terminal B1, and the anodes of the diodes D2, D4 are connected to a control terminal C2 via resistors 7, 8, respectively, and diodes D7, D8 connected in series in the forward direction via capacitors 11, 12 are connected to the anodes of the diodes D2, D4, then, its intermediate point is set as a signal terminal B2. The signal terminal B1 is set as the terrestrial broadcast high frequency signal input terminal, and the signal terminal B2 as the satellite broadcast high frequency signal input terminal.