Open AccessU‐shaped bow‐tie magneto‐electric dipole antenna with a modified horned reflector for ultra‐wideband applications
Author(s) -
Feng Botao,
Li Shufang,
An Wenxing,
Yin Sixing,
Li Jingchun,
Qiu Tianshuang
Publication year - 2014
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2013.0371
Subject(s) - dipole antenna , optics , radiation pattern , antenna measurement , monopole antenna , physics , acoustics , materials science , antenna (radio) , electrical engineering , engineering
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.