| 摘要 |
PURPOSE:To easily extract a stable clock without any fault in the phase from plural burst signals sent from a different transmitter in a receiver of the TDMA system by using other tank circuit for each time slot so as to extract a clock. CONSTITUTION:In the case of extracting a clock from a burst signal sent from different transmitters in a demodulation circuit used for a receiver of the time division multiple address(TDMA) system, the 1st switching circuit 2 and the 2nd switching circuit 5 are controlled by using a control signal to select either the 1st tank circuit 3 or the 2nd tank circuit 4 in the quiescent time of the burst signal. Then the tank circuit applying clock extraction of a preceding burst signal and the tank circuit extracting the clock of the succeeding burst signal are switched alternately. Thus, the effect of the preceding burst signal onto the clock recovery of the burst signal in succession to the preceding burst signal is prevented and the clock is stably extracted. |
