低噪声放大器的设计与仿真

Design and Simulation of Low-noise Amplifier

低噪声放大器在接收系统中能有效提高系统信噪比和接收机灵敏度,是接收系统的关键部件,它包括输入匹配网络、微波晶体管放大器和输出匹配网络。根据低噪声放大器设计的原理,设计一个3 GHz单级低噪声放大器,经过技术指标分析,采用NEC公司低噪声产品系列NE3210S01N沟道HJ-FET。阐述了如何利用Agilent公司的ADS软件进行分析和优化设计该电路的过程,仿真结果完全满足设计指标,对于低噪声放大器的设计研究有着重要的参考价值。

The low noise amplifier in the receiving system would improve signal noise ratio and receiver sensitivi -ty, and however , is also the key component of the receiving system .Low-noise amplifier includes input matc-hing network , microwave transistor amplifiers and output matching network .According to the principle of low -noise amplifier design , designs of a 3GHz single stage low noise amplifier , through technical analysis , using NEC＆#39;s NE3210 S01 based HJ-FET transistors .Describes how to use Agilent＆#39;s ADS software to analyze and opti-mize the process design of the circuit simulation results fully meet the design specifications , the design of low noise amplifier has important reference Value .