Achieving Ratio Bandwidth of 25:1 From a Printed Antenna Using a Tapered Semi-Ring Feed

Author

Liu, Jianjun ; Esselle, Karu P. ; Hay, Stuart G. ; Zhong, Shunshi

Author_Institution

Dept. of Electron. Eng., Macquarie Univ., Epping, NSW, Australia

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

1333

Lastpage

1336

Abstract

A printed super-wideband (SWB) antenna that consists of an elliptical monopole and a trapezoid ground plane is presented. By introducing a tapered microstrip impedance transformer and implementing a semi-ring feed interface to the radiation patch, the bandwidth of the antenna is enhanced. The results demonstrate that the measured 2:1 VSWR bandwidth is from 1.08 to 27.4 GHz with a ratio bandwidth of 25:1. The antenna has a stable radiation pattern over this frequency band. It is suitable for wireless communication applications.

Keywords

antenna feeds; broadband antennas; impedance convertors; microstrip antennas; microwave antennas; monopole antennas; SWB antenna; VSWR; antenna radiation pattern; bandwidth 1.08 GHz to 27.4 GHz; elliptical monopole antenna; microstrip impedance transformer; printed super-wideband antenna; tapered semiring feed interface; trapezoid ground plane; wireless communication applications; Antenna feeds; Antenna measurements; Bandwidth; Impedance; Current distribution; printed monopole; semi-ring feed; super-wideband (SWB);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2177800

Filename

6093724