Fundamental form and some kinds of deformations about TEM hornantenna which often be used in the time domain have been summarized, some kinds of its difference feed means have been introduced.
对时域中常常采用的TEM喇叭天线的基本形状和几种变形进行了综述，并给出了几种不同的馈电方式。
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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.