一、引言随着科学技术的进步,现代雷达技术(包括通讯和导航)正向着小型化、高精度、抗干扰和多功能方面发展。作为雷达基准讯号(或直接的射频功率源)的微波讯号源也要有更好的性能,主要是高的频率稳定度和频率精度,低噪声和变频的灵活性等。固体微波讯号源具备体积小、重量轻、稳定可靠、寿命长,耗电少等优点。它已运用于雷达的基准讯号,混频器的本振和参量放大器的泵源,以及机载相控阵雷达的发射单元 I. INTRODUCTION With the progress of science and technology, modern radar technologies (including communications and navigation) are moving toward miniaturization, high precision, anti-interference and multi-functional development. The microwave signal source that serves as the radar reference signal (or direct RF power source) also has better performance, mainly high frequency stability and frequency accuracy, low noise and frequency conversion flexibility. Solid microwave signal source with small size, light weight, stable and reliable, long life, low power consumption and other advantages. It has been used in the radar reference signal, the mixer’s local oscillator and parametric amplifier pump, as well as airborne phased array radar transmitter unit