Differential Stepped-Slot UWB Antenna With Common-Mode Suppression and Dual Sharp-Selectivity Notched Bands
Differential Stepped-Slot UWB Antenna With Common-Mode Suppression and Dual Sharp-Selectivity Notched Bands
复制标题
具有共模抑制和双锐选择性陷波带的差分阶梯式缝隙 UWB 天线
DOI：
10.1109/lawp.2015.2496159
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发表时间：
2016-01-01
影响因子：
4.2
通讯作者：
Wu, Xiao-Hu
中科院分区：
文献类型：
--
作者：
Li, Wen-Ao;Tu, Zhi-Hong;Wu, Xiao-Hu
本文提出了一种具有共模抑制和双锐选择性陷波频带的差分阶梯槽超宽带天线。该天线采用阶梯形缝隙作为辐射体，实现了超宽带。在差模工作时，微带馈电可以有效地激励阶梯形缝隙，辐射出差分信号。然而，在共模操作下，阶梯槽不会被激励，从而可以实现共模抑制。为了实现双锐选择性陷波带特性，分别在基底上刻蚀四分之一波长狭缝和在微带线旁引入半波长短截线。结果，得到了具有尖锐选择性的双二阶陷波带。测试结果表明，该天线在5.1 ~ 6.0 GHz和7.83 ~ 8.47 GHz范围内具有良好的共模抑制特性和双锐选择性陷波特性。实测结果与模拟结果吻合较好。
A differential stepped-slot UWB antenna with common-mode suppression and dual sharp-selectivity notched bands is proposed in this letter. The antenna adopts stepped slot as radiator to achieve ultrawideband. Under differential-mode operation, the stepped slot can be effectively excited by feeding microstrip, and differential signals can be radiated. However, under common-mode operation, the stepped slot would not be excited so that the common-mode suppression can be achieved. In order to achieve dual sharp-selectivity notch-band characteristic, quarter-wavelength slits are etched on the ground, and half-wavelength stubs are introduced beside the microstrip, respectively. As a result, dual second-order notched bands with sharp selectivity are obtained. The measured results show that the proposed antenna obtains good common-mode suppression characteristic and dual sharp-selectivity notched bands from 5.1 to 6.0 GHz and 7.83 to 8.47 GHz. Good agreement is achieved between the measured results and the simulated results.