| 摘要 |
PURPOSE:To obtain a plurality of continuous frequency signals, by using a frequency synthesizer repetitively outputting a plurality of frequency signals in time division, a gate circuit sectioning and outputting the signals at each channel number, and using a sample phase locked loop locked and held to this output. CONSTITUTION:A frequency synthesizer 1a outputs various frequencies corresponding to each channel number in burst state. A gate circuit 14 sections various frequencies with a control signal (c) at each channel number and forms reference signals fA, fB,...fZ of sample phase locked loops 13A-13Z. Since holding function is given to the sample phase locked loops 13A, 13B,...13Z so as to be outputted as continuous signals, only one frequency synthesizer of the local oscillator of an SCPC device is enough, allowing to attain small size. |
