| 摘要 |
<p>Described herein is a time-division double-way communication system. The time-division double-way communication system comprises a voltage-controlled oscillator (2), a digital signal source (5) for outputting a modulating signal, a phase control circuit (3) and a low-pass filter (4). A voltage having a middle level between a voltage having a high level of a modulating signal and a voltage having a low level thereof is supplied to the voltage-controlled oscillator together with a control voltage. During a transmission time slot, the modulating signal is superimposed on the voltage of the middle level, followed by input to the voltage-controlled oscillator where a carrier signal is digitally-modulated based on the modulating signal, whereas during a blind time slot immediately before the transmission time slot, the modulating signal is not inputted to the voltage-controlled oscillator. <IMAGE></p> |
