Compact UWB antenna with sharp band-notched characteristics for lower WLAN band

Author

Chu, Qing-Xin ; Huang, T.-G.

Author_Institution

Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China

Volume

47

Issue

15

fYear

2011

Firstpage

838

Lastpage

839

Abstract

A compact ultra-wideband (UWB) antenna with sharp band-notched characteristics is presented. The sharp band-notched characteristic is realised by inserting a half wavelength C-shaped slot in the patch and adding two half wavelength stepped impedance resonators around the feed-line. Simulated and experimental results show that the designed antenna, with compact size of 30 × 36 mm², has an impedance bandwidth of 3.1-10.6 GHz for return loss less than -10, except the lower WLAN band of 5.15-5.35 GHz (return loss >; -5 dB). The ratio of -5 dB notched bandwidth to -10 dB notched bandwidth is 0.79. Moreover, the antenna has good omnidirectional radiation patterns in the H-plane.

Keywords

antenna feeds; antenna radiation patterns; microstrip antennas; microwave antennas; omnidirectional antennas; ultra wideband antennas; wireless LAN; C-shaped slot; H-plane; bandwidth 3.1 GHz to 10.6 GHz; compact UWB antenna; feed-line; lower WLAN band; omnidirectional radiation patterns; sharp band-notched characteristics; stepped impedance resonators; ultra-wideband antenna;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2011.1053

Filename

5961124