以下为句子列表：
英文: An omnidirectional ultra-wideband monopole antenna, with the characteristics of simple structure, easy fabrication and low cost, mainly comprises a ground plane, a U-shaped radiating member above the ground plane and a feeding member.
中文: 一种可提供超宽频操作频带之全向性超宽频单极天线，其具有结构简单、制作简单以及成本低廉的特性。
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