Summary
International Symposium on Antennas and Propagation
2011
Session Number:ThG1
Session:
Number:ThG1-4
Unidirectional Low-Profile CPW-fed Slot Antenna Achieved by using Metasurface
Sarawuth Chaimool, Chawalit Rakluea, Prayoot Akkaraekthalin,
pp.-
Publication Date:2011/10/25
Online ISSN:2188-5079
Summary:
Instead of a conducting reflector, this work shows to achieve unidirectional CPW-fed slot antenna by using metasurface as a superstrate. The metasurface comprises an array of square ring cells to reduce the resonant frequency of the conventional CPW-fed slot structure. The proposed antenna gain increased from 1.5 to 8.0 dBi and the radiation patterns are all improved when using metasurface. Moreover, a significant reduction of antenna height from λ0/4 (conducting reflector) to λ0/15 (metasurface) at 2.45GHz is predicted. Good agreement between measured and simulated results is achieved.