U-shaped bow-tie magneto-electric dipole antenna with a modified horned reflector for ultra-wideband applications

被引：14
作者：
Feng, Botao [1 ]
Li, Shufang [1 ]
An, Wenxing [2 ]
Yin, Sixing [1 ]
Li, Jingchun [3 ]
Qiu, Tianshuang [4 ]
机构：
[1] Beijing Univ Posts & Telecommun, Beijing Key Lab Network Syst Architecture & Conve, Beijing 100876, Peoples R China
[2] Tsinghua Univ, Sch Informat Sci & Technol, Dept Elect Engn, Beijing 100084, Peoples R China
[3] State Radio Monitoring Ctr, Beijing 100041, Peoples R China
[4] Dalian Univ Technol, Dept Biomed Engn, Dalian 116024, Peoples R China
来源：
IET MICROWAVES ANTENNAS & PROPAGATION | 2014年 / 8卷 / 12期
基金：
中国国家自然科学基金;
关键词：
MONOPOLE ANTENNA;
D O I：
10.1049/iet-map.2013.0371
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 novel U-shaped bow-tie magneto-electric dipole unidirectional antenna with a dual-layer horned reflector for ultra-wideband (UWB) applications is proposed. To broaden impedance bandwidth, a U-shaped bow-tie electric dipole structure with two notch slots is presented. In addition, to reduce the size of the antenna and improve impedance matching, a new feeding structure designed with perforation and tapered line is introduced. Finally, a double-layer horned reflector, instead of a ground plane, is employed to improve radiation patterns and gains for high-rate data transmission. The prototype antenna can achieve a stable gain of 10 +/- 1.2 dBi and an impedance bandwidth of 118% for standing wave ratio <= 2 from 2.81 to 10.92 GHz. To the best of the authors knowledge, it is the first U-shaped bow-tie magneto-electric dipole unidirectional antenna for UWB applications. The proposed antenna, which possesses the advantages of UWB antenna and magneto-electric dipole antenna simultaneously, can be easily fabricated with low cost. With these features, it is a practicable candidate for UWB communications.
引用
收藏
页码：990 / 998
页数：9
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