选择适合的压力、扭力传感器，开发单片机控制电路、小信号放大器，应用PC机并配合多功能数据采集卡完成数据采集与处理。
Select the appropriate pressure and torque sensors, develop SCM control circuit and small-signal amplifier, do data acquisition and Processing by PC and multifunctional data acquisition card.
射频功率放大器总是工作在大信号状态下，它所用的放大器件和电路设计方法都不同于小信号放大器，导致了功率放大器的设计难度较大。
RF PA almost working in large signal, so it's circuit design methods and transistor used are different from microwave small signal amplifier, these will led to RF PA design become more difficulty.
本文简要地介绍了不定导纳矩阵的基本概念，讨论了应用于高频小信号放大器的分析方法，给出了应用实例，并得出放大器的增益和输入阻抗表达式。
In this paper the concept of IAM is introduced and the method Used for analyzing H. F. small signal amplifier is discussed. The expressions of gain and input impedance of amplifier are given.
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