一种共面波导馈电的双陷波渐变槽天线

李振亚; 竺小松; 张建华

doi:10.11999/JEIT171055

一种共面波导馈电的双陷波渐变槽天线

doi: 10.11999/JEIT171055

国防科技大学电子对抗学院合肥 230037

基金项目: 国家自然科学基金(61671454)

详细信息

作者简介:
李振亚：男，1989年生，博士生，研究方向为宽带微带天线、共形微带天线的理论分析与仿真计算

竺小松：男，1963年生，研究员，博士生导师，研究方向为嵌入式智能信号处理、智能蒙皮技术

张建华：女，1962年生，教授，研究方向为电磁场理论与天线技术

通讯作者:
李振亚　 lizhenya7189@126.com

中图分类号: TN823
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- 被引次数: 0
出版历程
- 收稿日期: 2017-11-14
- 修回日期: 2018-04-26
- 网络出版日期: 2018-05-30
- 刊出日期: 2018-08-01

A Co-planar Waveguide Fed Dual Band-notched Tapered Slot Antenna

Institute of Electronic Countermeasure, National University of Defense Technology, Hefei 230037, China

Funds: The National Natural Science Foundation of China (61671454)

摘要

摘要: 为了滤除WIMAX(3.3～3.8 GHz)和WLAN(5.125～5.825 GHz)窄带信号对超宽带系统的干扰，该文提出一款共面波导馈电的小型化双陷波渐变槽天线。共面波导结构可以有效地扩展天线的带宽，实现对整个UWB(3.1～10.6 GHz)频段的全覆盖。通过在天线的馈线上开L型缝隙和在辐射贴片上开一对E字型缝隙的方法，有效实现了在3.15～3.97 GHz和4.94～6.05 GHz频段的双陷波特性，能够抑制WIMAX和WLAN对超宽带系统的干扰。该天线结构简单紧凑，尺寸非常小，仅为40 mm×18 mm×0.813 mm。仿真和实测结果表明该天线在超宽带波段内具有良好的陷波特性、增益特性，可以应用于小型化超宽带系统中。文中方法对于陷波渐变槽天线的研究具有一定的借鉴意义。
- 渐变槽天线 /
- 共面波导 /
- 双陷波 /
- 小型化
Abstract: In order to filter out the interference of WIMAX (3.3～3.8 GHz) and WLAN (5.125～5.825 GHz) narrowband signals to Ultra WideBand(UWB) system, a Co-Planar Waveguide (CPW) fed miniaturized tapered slot antenna with dual band-notched characteristics is proposed. The CPW structure can effectively extend the bandwidth of the antenna and realize the full coverage of the whole UWB (3.1～10.6 GHz) frequency band. The dual band-notched characteristics (3.15～3.97 GHz and 4.94～6.05 GHz) are effectively achieved by etching the L-shaped slot in the antenna feeder and opening a pair of E-shaped slots in the radiating patch, which can inhibit WIMAX and WLAN interference to the UWB system. The antenna is simple and compact, and the size is very small, only 40 mm×18 mm×0.813 mm. The simulated and measured results show that the antenna has good notch and gain characteristics in the ultra wideband band, and can be used in miniaturized UWB system. The method has certain reference significance for the research of notched tapered slot antenna.
- Tapered slot antenna /
- Co-Planar Waveguide (CPW) /
- Dual band-notched /
- Compact

HTML全文

图 1 天线结构图

下载: 全尺寸图片幻灯片

图 2 天线的设计流程

下载: 全尺寸图片幻灯片

图 3 4种不同天线和参数优化驻波比曲线

下载: 全尺寸图片幻灯片

图 4 辐射贴片表面电流分布图

下载: 全尺寸图片幻灯片

图 5 天线实物图

下载: 全尺寸图片幻灯片

图 6 天线驻波比实测与仿真对比图

下载: 全尺寸图片幻灯片

图 7 天线的峰值增益

下载: 全尺寸图片幻灯片

图 8 天线E面和H面辐射方向图

下载: 全尺寸图片幻灯片

表 1 优化后的天线单元参数

参数	数值(mm)	参数	数值(mm)
L	18.0	W	40.0
L₁	2.2	W₁	11.0
L₂	2.7	W₂	3.4
L₃	3.5	W₃	3.8
L₄	6.0	W₄	8.5
L₅	2.0	S	3.4
L₆	4.2	d	3.0

下载: 导出CSV

表 2 与相关文献的对比

文献	尺寸(mm³)	工作频率(GHz)	陷波波段(GHz)	抑制增益(dB)
[11]	39×38×0.813	3.05～10.3	5～6	15.0
[12]	50×50×0.8	2.4～11.2	4.6～6.2	13.5
[13]	50×50×0.8	3～11	4.3～5.4	3.8
[14]	43×40×0.508	3～11	5.125～5.350/5.725～5.825	10.0/7.6
[15]	66.3×66.3×0.813	3～11	3.6～3.9/5.6～5.8	7.0/5.4
[16]	50×50×0.8	2.4～11.6	3.1～4.0/5.1～6.2	7.5/10.0
[17]	57.4×55×1.524	3.3～10.8	4.17～4.37/6.0～6.8	—/10.5
本文	40×18×0.813	2.8～9.7	3.15～3.97/4.94～6.05	16.0/16.5

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