Open AccessHalf‐mode dielectric waveguide antenna fed by a micro‐strip line with air media for endfire radiation
Author(s) -
Hou Yuefeng,
Li Yue,
Zhang Zhijun,
Feng Zhenghe
Publication year - 2019
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.2018.5700
Subject(s) - optics , slot antenna , radiation pattern , dielectric , antenna gain , wavelength , radiation , waveguide , ground plane , bandwidth (computing) , antenna (radio) , materials science , physics , antenna efficiency , optoelectronics , electrical engineering , engineering , telecommunications
A half‐mode dielectric waveguide antenna fed by a micro‐strip line with air media is presented. The proposed antenna consists of two dielectric cuboids and an air‐substrate micro‐strip line. Due to similar modal field configurations, the dielectric cuboids are excited effectively by the micro‐strip line, and they work as two half‐mode waveguide antennas working on the TM 0 mode. With the length of 6.5 wavelength at the centre frequency of 5 GHz, a measured endfire gain of 12.2 dBi is achieved. The measured 1 and 3‐dB gain bandwidths could reach 17 and 46%, respectively. Good matching is obtained over the entire operating band from 3.5 to 6.5 GHz. Compared with the antennas mounted on a large conducting plane, the proposed antenna has the advantages of a high endfire gain, a wide endfire gain bandwidth, and a stable endfire radiation pattern.