Fabrication and Measurement of Multiple U-Shaped Slot Microstrip Patch Antenna in 5.2 GHz Band

JoongHan YOON  Seung-Kwon BAEK  Kyung-Sup KWAK  

IEICE TRANSACTIONS on Communications   Vol.E87-B   No.1   pp.184-187
Publication Date: 2004/01/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Radio Communications
antennas,  microstrip antenna,  multiple U-shaped slot,  HiperLAN,  

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This paper describes the design, fabrication, and measurement of a multiple U-shaped slot antenna for Hiper-LAN. The prototype consists of a U-shaped slot and two inverted U-shaped slot. To obtain sufficient bandwidth, a foam layer is inserted between the ground plane and substrate. A measured bandwidth of approximately 7.6% (VSWR 1.5) and gain of 2.9-5.3 dBi are obtained. The experimental far-field patterns are shown to be stable across the pass band, with the 3 dB beam width in azimuth and elevation at 50and 62, respectively.