| 摘要 |
PURPOSE:To obtain a continuous bit synchronizing signal by applying regeneration of bit synchronism with one bit synchronism regenerating circuit to reduce components after two systems of reception signals are applied while keeping analog signals. CONSTITUTION:The frequency of the signal received by antennas 14, 15 is converted respectively into the amplitude by reception circuits 16, 17, the signals are applied analogically at an adder circuit 20, fed to the bit regenerating circuit 21, where the bit synchronism signal is regenerated. The output is outputted as the bit synchronizing signal and also led to demodulation circuits 18, 19, which demodulates a signal from the reception circuits 16, 17, sampled by the bit synchronizing signal and outputted to a selection circuit 24. Moreover, the level of the two reception signals is compared, the result is outputted to the selection circuit 24, and when the reception signal of the antenna 14 is stronger, the output of the demodulation circuit 18 is outputted and when the reception signal of the antenna 15 is stronger, an output of the demodulation circuit 19 is outputted. |
