通信射频仿真安捷伦APPCAD，有源器件、无源器件设计。

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APPCAD阻抗计算工具

仿真软件

APPCAD4.0,AppCAD是一款更为流行的免费工具，最初是由惠普公司（Hewlett-Packard）即现在的安捷伦科技开发的。3.0.2版本的射频与微波AppCAD可以从网站免费下载。这款工具提供了有用的S参数分析例程，包括用于分析滤波器响应的函数。

射频电子仿真软件AppCAD

RF 系统设计，PCB阻抗计算 What is AppCAD? “AppCAD is an easy-to-use program that provides you with a unique suite of RF design tools and computerized Application Notes to make your wireless design job faster and easier. AppCAD's unique, interactive approach makes engineering calculations quick and easy for many RF, microwave, and wireless applications. AppCAD is useful for the design and analysis of many circuits, signals, and systems using products from discrete transistors and diodes to Silicon and GaAs integrated circuits. The keyword for AppCAD is easy - no circuit files, no manuals - just quick and easy.“