Compact CPW-fed antenna with two asymmetric U-shaped strips for UWB communications

Author

Tang, Z.J. ; Zhan, Junpeng ; Liu, H.L.

Author_Institution

Coll. of Inf. & Electr. Eng., Hunan Univ. of Sci. & Technol., Xiangtan, China

Volume

48

Issue

14

fYear

2012

Firstpage

810

Lastpage

812

Abstract

A novel coplanar waveguide (CPW)-fed printed antenna with two asymmetric U-shaped strips is designed and analysed for ultra-wideband wireless applications. The asymmetric radiating structure with two U-shaped strips and a staircase-shaped strip is adopted in the proposed antenna which broadens the bandwidth to a great extent. The dimensions of the antenna are only 23 × 25.5 × 1.6 × mm. The antenna yields a wide bandwidth ranging from 3.0 to 12.9 × GHz with return loss less than -10 × dB with near-linear phase characteristics and stable antenna gain. Furthermore, the proposed antenna can achieve quasi-omnidirectional radiation patterns. The measured results agree well with the simulated prediction.

Keywords

antenna feeds; antenna radiation patterns; coplanar waveguides; microstrip antennas; ultra wideband communication; UWB communication; asymmetric U-shaped strip; asymmetric radiating structure; bandwidth 3 GHz to 12.9 GHz; compact CPW-fed antenna; coplanar waveguide-fed printed antenna; near-linear phase characteristics; quasi-omnidirectional radiation pattern; size 1.6 mm; size 23 mm; size 25.5 mm; staircase-shaped strip; ultra-wideband wireless application;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2012.0445

Filename

6235135