软件无线屯的设计思想之一是将A／D转换器尽可能靠近天线，即把A／D从基带移到中频甚至射频，把接收到的模拟信号尽早数字化。

One of the important conceptions of Software Radio is to make A/D converter close to antenna, we should convert IF analog signal even RF analog signal into digital signal.

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本文设计了一种S波段高功率微波天线的馈源系统，该系统由双模圆锥喇叭和矩-圆模式转换器两部分组成。

This paper designs a S-band feed system for HPM antenna, which consists of a dual-mode conical horn and a rectangular-circular mode convertor.

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本文设计了一种S波段高功率微波天线的馈源系统，该系统由双模圆锥喇叭和矩-圆模式转换器两部分组成。

This paper designs a S-band feed system for HPM antenna, which consists of a dual-mode conical horn and a rectangular-circular mode convertor.

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