Almost every microwave apparatus can be used in microwave receiver ’ s design , except power apparatus 除了微波功率器件之外,几乎所有的微波器件都可用在微波接收机的设计中。
Therefore , microwave receiver has become an important research area because of its applications in electronic war 因此,由于微波接收机在电子战中的各种应用,使它们成为一个重要的研究领域。
The rapid development of radar , communications and weapon guide systems brings exigent demand for microwave receiver ’ s capability to detect any possible threaten in operation 雷达,通信和武器制导系统的迅速发展,导致了在执行军事行动时迫切需要用微波接收机探测可能的各种威胁。
The advancement of microwave receiver ’ s field could be thought as the product of device and logic circuit study , how to achieve receiver ’ s miniaturization , integration and high precision is always its vital part 在微波接收机研制方面所取得的进展可以认为是器件和逻辑电路研究的产物,如何实现微波接收机的小型化,整体化和高精度始终是其重要发展方向。
The phase noise in microwave receiver and the measured parameter of source frequency instability are described in this paper , and the technology of frequency - synthesizing and theory of phase locked loop ( pll ) are also briefly introduced 摘要阐述了微波接收机中的相位噪声概念及本振源频率不稳定度的实际测量参数,并简要介绍了频率合成技术和锁相环路工作原理。