Design of compact reconfigurable ultra-wideband slot antenna with switchable single/dual band notch functions
Design of compact reconfigurable ultra-wideband slot antenna with switchable single/dual band notch functions
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DOI：
10.1049/iet-map.2013.0311
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发表时间：
2014-06-04
影响因子：
1.7
通讯作者：
Shahmirzadi, Arash Valizade
中科院分区：
文献类型：
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作者：
Badamchi, Bahareh;Nourinia, Javad;Shahmirzadi, Arash Valizade
本研究提出了一种小型可重构微带槽天线，具有可切换的单双带陷波功能，用于超宽带（UWB）应用。在所提出的结构中，通过在馈线上刻蚀两个对称的缺口来激发额外的共振，从而获得超宽带特性。然后，通过在辐射贴片上切割两个槽并沿这些槽嵌入两个PIN二极管，增加了可切换的单频段和双频段陷波性能。通过改变PIN二极管的偏置状态，该天线能够表现出四种不同的性能：超宽带频谱覆盖、无线局域网（WLAN）频段单抑制的超宽带覆盖、WiMAX和c频段频谱单抑制的超宽带覆盖、WLAN、WiMAX和c频段双带陷波功能的超宽带覆盖。在不同的天线性能下，仿真结果与实测结果吻合较好。设计的天线尺寸为20 × 20 mm(2)，测量结果表明，该天线在UWB频谱内具有良好的辐射性能，在3.15 ~ 3.85 GHz和5.43 ~ 6.1 GHz具有可切换的带陷波函数，可以消除WiMAX、c波段和WLAN系统对UWB频段的干扰。
A compact reconfigurable microstrip slot antenna with switchable single and dual band notch functions for ultra-wideband (UWB) applications is presented in this study. In the proposed structure, an additional resonance is excited by etching two symmetrical notches on the feed-line and thereby a UWB characteristic is obtained. Then, by cutting two slots on the radiating patch and embedding two positive-intrinsic-negative (PIN) diodes along these slots, switchable single and dual band notch performances are added to the antenna performance. By changing the bias states of the PIN diodes, the antenna is capable of exhibiting four different performances of UWB spectrum coverage, UWB coverage with single rejection of the wireless local area network (WLAN) band, UWB coverage with single rejection of the WiMAX and C-band spectrum, and UWB coverage with dual band notch function at the WLAN, the WiMAX and the C-band frequencies. Good agreement between the simulated and the measured results is achieved at different performances of the antenna. The designed antenna has a small size of 20 x 20 mm(2) and the measured results reveal that the fabricated antenna has good radiation behaviour in the UWB frequency spectrum with switchable band notch functions at 3.15-3.85 and 5.43-6.1 GHz which can eliminate the UWB frequency band interference with the WiMAX, the C-band and the WLAN systems.