Gain enhancement for wide bandwidth endfire antenna with I-shaped resonator (ISR) structures

Author

Sun, Y.H. ; Wen, G.J. ; Jin, H.Y. ; Wang, Peng ; Huang, Y.J.

Author_Institution

Centre for RFIC & Syst. Technol., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

49

Issue

12

fYear

2013

fDate

June 6 2013

Firstpage

736

Lastpage

737

Abstract

A broadband gain enhancement endfire antenna is presented. The gain enhancement is achieved by loading with an I-shaped resonator (ISR) structure in the endfire direction. Broad bandwidth is realised by using a microstrip-to-coplanar balun and bowtie dipole elements, while gain enhancement is achieved by loading the ISR structure in the endfire direction. The measurements show that the ISR-loaded antenna presents a gain of about 4-8 dB in the whole working band (4.5-9.5 GHz), which is about 2 dB more than the unloaded one. The advantages of broad bandwidth and high gain make this antenna valuable in wireless communication systems.

Keywords

baluns; bow-tie antennas; broadband antennas; dipole antenna arrays; microstrip antenna arrays; microwave resonators; I-shaped resonator structures; ISR-loaded antenna; bandwidth 4.5 GHz to 9.5 GHz; bowtie dipole element; broadband antenna; endfire direction; microstrip-to-coplanar balun; wide bandwidth endfire antenna Gain enhancement; wireless communication systems;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2013.1198

Filename

6550128