A Compact Notched Band UWB Slot Antenna With Sharp Selectivity and Controllable Bandwidth
A Compact Notched Band UWB Slot Antenna With Sharp Selectivity and Controllable Bandwidth
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具有敏锐选择性和可控带宽的紧凑型缺口带UWB缝隙天线
DOI：
10.1109/tap.2013.2261575
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发表时间：
2013-08-01
影响因子：
5.7
通讯作者：
Zhu, He
中科院分区：
文献类型：
--
作者：
Chu, Qing-Xin;Mao, Chun-Xu;Zhu, He
提出了一种具有陷波特性的小型超宽带缝隙天线。采用阶梯形缝隙作为辐射体，实现了超宽带天线的阻抗匹配，减小了天线尺寸。通过在馈源背面开一个开口的四分之一波长分裂槽和在阶梯槽附近开一个短端的半波长分裂环槽，实现了5.15- 5.85GHz的二阶陷波。与传统的陷波天线相比，该陷波天线的频带选择性大大提高，同时减小了天线的尺寸。该天线的体积仅为22 mm×8.5 mm×0.8 mm，并且可以通过调节两个缝隙的长度来控制天线的带宽。仿真结果与实测结果吻合较好，表明该天线具有良好的阻抗匹配和方向图特性。
A compact ultra-wideband (UWB) slot antenna with band-notched characteristics is proposed. A stepped slot is adopted as a radiator to realize UWB impedance matching and reduce the antenna size. By slitting an open-ended quarter-wavelength split slot on the back of the feed and a short-ended half-wavelength split-ring slot near the stepped slot, a second-order notched band of 5.15-5.85 GHz is achieved. Compared with the traditional band-notched antenna, the selectivity of the notched band is greatly improved and size of the antenna is reduced at the same time. The volume of the antenna is only 22 mm×8.5 mm×0.8 mm. Besides, the bandwidth can be easily controlled by adjusting the lengths of the two slots respectively. Good agreement is achieved between simulated and measured results, which show that the proposed antenna has nice impedance matching and radiation pattern characteristics.