Compact Offset Microstrip-Fed MIMO Antenna for Band-Notched UWB Applications

被引:165
作者
Kang, Le [1 ]
Li, Hui [1 ]
Wang, Xinhuai [1 ]
Shi, Xiaowei [1 ]
机构
[1] Xidian Univ, Sci & Technol Antenna & Microwave Lab, Xian 710071, Peoples R China
来源
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷
关键词
Band-notched; multiple-input-multiple-output (MIMO) antenna; offset microstrip-fed; ultrawideband (UWB) antenna; SLOT ANTENNA;
D O I
10.1109/LAWP.2015.2422571
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A compact multiple-input-multiple-output (MIMO) antenna is presented for ultrawideband (UWB) applications with band-notched function. The proposed antenna is composed of two offset microstrip-fed antenna elements with UWB performance. To achieve high isolation and polarization diversity, the antenna elements are placed perpendicular to each other. A parasitic T-shaped strip between the radiating elements is employed as a decoupling structure to further suppress the mutual coupling. In addition, the notched band at 5.5 GHz is realized by etching a pair of L-shaped slits on the ground. The antenna prototype with a compact size of 38.5 x 38.5 mm(2) has been fabricated and measured. Experimental results show that the antenna has an impedance bandwidth of 3.08-11.8 GHz with reflection coefficient less than -10 dB, except the rejection band of 5.03-5.97 GHz. Besides, port isolation, envelope correlation coefficient and radiation characteristics are also investigated. The results indicate that the MIMO antenna is suitable for band-notched UWB applications.
引用
收藏
页码:1754 / 1757
页数:4
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