Compact super-wideband asymmetric monopole antenna with dual-branch feed for bandwidth enhancement

Author

Liu, Jiangchuan ; Esselle, Karu P. ; Hay, Stuart G. ; Zhong, S.S.

Author_Institution

Centre for Microwave & Wireless Applic., Macquarie Univ., Sydney, NSW, Australia

Volume

49

Issue

8

fYear

2013

fDate

April 11 2013

Firstpage

515

Lastpage

516

Abstract

A novel compact super-wideband (SWB) antenna with an optimised feed is presented. The antenna is composed of an asymmetric trapezoid ground plane and a modified rectangular monopole patch. It is demonstrated that the bandwidth of the antenna is significantly enhanced by introducing an asymmetric dual-branch feed with an L-shaped feed branch. The measurements indicate that the 2:1 VSWR bandwidth is from 1.05 to 32.7 GHz with a ratio bandwidth of 31:1. Since the antenna features an extremely wide bandwidth and the entire size is only 74 × 80 mm, it is useful for modern wireless communication applications.

Keywords

UHF antennas; antenna feeds; broadband antennas; microstrip antennas; microwave antennas; millimetre wave antennas; monopole antennas; radio networks; L-shaped feed branch; SWB antenna; VSWR bandwidth; antenna features; asymmetric dual-branch feed; asymmetric trapezoid ground plane; bandwidth 1.05 GHz to 32.7 GHz; bandwidth enhancement; compact super-wideband asymmetric monopole antenna; dual-branch feed; modern wireless communication applications; modified rectangular monopole patch; optimised feed;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2012.4015

Filename

6527532