一、概述近年来,计算机已深入到各个领域。通讯网设计中,计算机应用也很广泛。在频率选择、场强计算,话务量统计中都遇到了计算量大,公式繁琐等问题。现已利用计算机这个有利的工具,迅速而准确地给予了不同程度地解决。本文主要探讨计算机在频率选择中的应用。在无线通讯网设计中,选择频率时必须避开三阶互调干扰点的频率,这样就遇到了计算三阶互调点的问题。这种计算的量大,因而使用计算机是非常适宜的。互调干扰是由于电路的非线性而引起的。收信机的互调是由于高放级及第一混频级的非线性引起的, I. Overview In recent years, computers have penetrated into various fields. Communication network design, computer applications are also very broad. In the frequency selection, field strength calculation, traffic statistics have encountered a large amount of calculations, formulas and other issues cumbersome. Computer-aided tools have now been used to provide swift and accurate solutions to varying degrees. This article mainly discusses the application of computer in frequency selection. In the design of wireless communication networks, the frequency of the third-order intermodulation interference points must be avoided when selecting the frequency, so that the problem of calculating the third-order intermodulation points is encountered. This calculation is large, so the use of a computer is very suitable. Intermodulation interference is caused by the non-linearity of the circuit. The intermodulation of the receiver is due to the non-linearity of the high-level amplifier and the first mixer,