| 摘要 |
PURPOSE:To effectively execute reception even in the case of a response speed to a receiving signal level is increased and a receiving signal level fluctuation is quick little by little by detecting a receiving signal by dividing it into a phase modulation component and an amplitude modulation component, and thereafter, synthesizing them. CONSTITUTION:A first receiving wave from a terminal 11 passes through a limiter amplifier 21 and is supplied to a phase detecting circuit 31 and a phase modulation component of the receiving wave is detected, and outputted through a reproducing circuit 41. On the other hand, an envelope detecting circuit 61 is averaged by an average arithmetic circuit 91, an amplitude modulation component is detected, and both the components are synthesized and demodulated by a synthesis/demodulation processing circuit 5. With respect to a second receiving wave from a terminal 12, as well, the same processing executed, feedback control, etc., are unnecessary and the equipment is not influenced by a time constant, etc., and even in the case of a response speed to a level receiving signal can be increased and a receiving signal level fluctuation is quick little by little, reception is executed effectively. |
