一种高增益级联微波放大器设计与实现

由于某型设备的微波小信号放大需求，需要设计一款高增益微波放大器。本文给出了一种增益大于100 dB的多级放大器设计思路及设计过程，针对此设计进一步讨论了前置放大器、中间级放大器、末级放大器及混频器等各单元的器件的选择，完成了电原理图的设计以及PCB板的布置，最后对该放大器的进行了实测，结果表明该放大器实际总增益在105±0.130.24 dB，增益精度<±0.5 dB，达到了设计要求。目前此放大器已运用于某型发信监测设备中并取得了良好的效果。

The design and implementation of a high power gain cascade microwave amplifier

A high power gain microwave amplifier is expected in the equipment to amplify the small signal. The designation idea and procedure of the amplifier whose power gain more than 100dB are discussed in the thesis. It is about the choice of electronic components, the design of circuits, the layout of PCB of the preamplifier, the intermediate amplifier, the terminal amplifier, etc. Finally, the result of the real amplifier shows that the amplifier has met the requirement of the designation. The amplifier is actually used in the recently implementation of a transmission monitoring equipment.