高性能滤波器的计算机辅助设计与仿真

Computer Aided Design and Emulation of High Performance Filter

介绍了利用Ｐｓｐｉｃｅ电路仿真软件，对高性能滤波器进行设计，模拟，优化的一般方法，改变了滤波器的传统设计方法，避免了复杂的计算，省略了搭试和测试的步骤，并能保证设计的可靠性。介绍了对电路进行直流（ＤＣ）工作点分析，交流（ＡＣ）工作特性分析，频谱分析，瞬态分析，还进行了统计分析和容差分析等，给出了设计实例，并用实验进行了验证。文中表明：八阶切比英夫（Ｔｃｈｅｂｙｓｈｅｖ）滤波器性能优良，电阻电容选用０．５％的容差，可以达到很高的可靠性。

This paper introduces conventional method of design Pspice software of emulation of circuit, simulation and optimization of high performance filter, changes the traditional designed method of filter, avoids complicated calculation,omits the step of link-line and testing,and ensures the reliability of the design. It introduces analysis DC work point and AC work characteristic, makes analysis of spectra,analysis of transient state, and makes statistical analysis and tolerance analysis to provide examples of p^r design and verifies with experiments, This paper shows that the function of Tchebyshev filter of eight order is fine, and it will achieve a very high reliability if we choose the tolerance of 0.5% when we use resistance and capacitance.