| 摘要 |
<p>PURPOSE:To transmit precisely a synchronizing signal at any time by providing an electrooptic signal converter to a transmission part side and an optoelectric signal converter and a PLL circuit to a reception part, and using an optical fiber cable as a cable. CONSTITUTION:A high frequency signal outputted from an oscillator 3 is passed through a frequency divider 4 and applied to respective synchronizing signal output parts as a transmission synchronizing signal Tx and a reception synchronizing signal Rx and then converted into light pulse signals, which are outputted. Those light pulse signals are inputted to a synchronizing signal input part 7 through the optical fiber cable 6 and converted into electric signals, which are outputted to the PLL circuit. Said signal output is passed through a phase detector 81, an integrator 82, and a VCO 83 and transmitted at a frequency corresponding to its voltage, and the signal is inputted to the phase detector 81 as a reference signal and also outputted to the pulse generator 21 of an antenna unit 2 as the transmission synchronizing signal Tx.</p> |
