| 摘要 |
PURPOSE:To stably erase the interference noise by generating a compensation signal synchronously with the signal component of an interference noise from a base band signal after polarized wave demodulation giving interference and synthesizing the signal with the base band signal after demodulation. CONSTITUTION:A synchronizing signal generating circuit 16 generating a synchronizing signal to the polarized wave subjected to interference based on the frequency difference between radio frequency local oscillators 15-1 and 15-2 and the frequency difference between demodulation local oscillators 10-1 and 10-2, a compensation signal generating circuit 18-1 using the synchronizing signal of a synchronizing signal generating circuit 16, receiving a base band signal after the demodulation of polarized wave giving interference and generating a compensation signal to erase the signal component of the interference noise receiving the base band signal after demodulation giving interference at every base band signal, and an interference noise erasure device 17-1 erasing the signal component of the interference noise from the compensation signal of the circuit 18-1 and the base band signal after demodulation receiving the interference, are provided. Thus, even when the polarized waves of each local oscillation frequency of the sender side are asynchronous, the interference noise is erased stably at the reception side.
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