Title :
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
fDate :
7/3/1905 12:00:00 AM
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);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2177800
