Open AccessLinearly polarised radial line slot antenna for high‐power microwave application
Author(s) -
Peng Shengren,
Yuan Chengwei,
Shu Ting,
Zhao Xuelong
Publication year - 2017
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.2016.0289
Subject(s) - antenna (radio) , antenna aperture , optics , aperture (computer memory) , antenna efficiency , radial line , radiation pattern , antenna factor , microwave , radius , antenna gain , antenna measurement , slot antenna , physics , return loss , electrical engineering , acoustics , engineering , computer science , computer security , quantum mechanics
An all‐metal linearly polarised radial line slot antenna without dielectric is proposed in this study. As a result of this study, new design suggestions have been introduced which greatly contribute to the performance improvement of this type of antennas for high power microwave application. An antenna prototype operating at 9.27 GHz was designed with a height of 10 cm and an aperture radius of 25.5 cm. Experimental measurements show that at the centre frequency, the antenna gain reaches 31.3 dBi, an aperture efficiency of 55%, return loss is less than −20 dB. The radiation patterns indicate a reasonable cross‐polarisation level more than 30 dB below the co‐polarisation. This all‐metal antenna efficiency is higher than the traditional one.