Frequency converter circuit

PCT No. PCT/JP88/00535 Sec. 371 Date Jan. 30, 1989 Sec. 102(e) Date Jan. 30, 1989 PCT Filed Jun. 1, 1988 PCT Pub. No. WO88/10024 PCT Pub. Date Dec. 15, 1988.The present invention relates to a frequency converter circuit which can be used in a receiving apparatus for receiving a satellite broadcast and which is designed so that a local oscillation signal is distributed and supplied from a single local oscillator to mixer circuits of electric signal processing circuits of more than two systems and mixer diodes of the mixer circuits are biased with a dc current thereby always applying a biasing with the dc current even to the mixer diode of the electric signal processing circuit of the system which is not operated, and there are advantages of ensuring a stable operation, making possible a reduction in the size and weight and making favorable from the cost point of view.