摘要
本文介绍采用3mm压控Gunn管振荡器的锁相系统,它可复盖75-115GHz频率范围,并保证输出功率大于5mW.锁相系统的基准信号由频率综合器提供,当频率综合器工作在计算机控制方式下,可在频率锁定带宽内,实现频率预置,频率跟踪和跳频等程控工作状态.
A W—band phase—locked Gunn oscillator has been developed for using as a local oscillator for PMO 13.7-m millimeter-wave radio telescope. Two kinds of Gunn oscillators and the harmonic mixer of the PLO system are made in our laboratory. The operating range is 40 GHz (75-115 GHz) and the output power is greater than 5mW over its operating range. The output signal of servo amplifier in PLO controls the bias voltage of Gunn oscillator to phase lock the Gunn Oscillator over more than 100MHz tuning range.
基金
国家自然科学基金
