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幅度调制和功放是仪表着陆系统测试设备必不可少的一部分。文章对其进行了初步的设计。通过对双平衡混频器的特殊应用,实现了调幅调制器。加了一级功放,并用ADS软件仿真并设计了一个四阶的低通滤波器。各项指标符合要求。
Amplitude modulation and power amplifier is an essential part of instrument landing system test equipment. The article has carried on the preliminary design to it. Through the special application of double balanced mixer, the AM modulator is realized. Plus a power amplifier, and use ADS software simulation and design of a fourth-order low-pass filter. The indicators meet the requirements.