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http://dx.doi.org/10.13067/JKIECS.2011.6.5.611

Design and Fabrication of Monopole Antenna with Three Branch Strips and Rectangular Slit Ground for WLAN/WiMAX Applications  

Koo, Yung-Seo (국방기술품질원)
Yoon, Joong-Han (신라대학교)
Publication Information
The Journal of the Korea institute of electronic communication sciences / v.6, no.5, 2011 , pp. 611-620 More about this Journal
Abstract
A planar monopole antenna that was developed for WLAN/WiMAX application is presented in this paper. The proposed antenna with three strips, an asymmetrical ground plane, and a rectangular slit in the ground is designed to cover the popular frequency spectrum of WLAN (wireless local area network) bands and WiMAX (Worldwide Interoperability for Microwave Access) bands. The proposed antenna, which is capable of wideband operation, is fed by a strip line and fabricated on an FR-4 substrate. The obtained numerical results agree well with the experiment data. It was validated that the configuration can meet the demands for the WLAN/WiMAX systems and effectively enhanced the impedance bandwidth to 9.95% for the lower band and 76.05% for the upper band for VSWR < 1 : 2. This paper also presents and discusses the 2D radiation patterns and 3D gains according to the results of the experiment.
Keywords
WLAN/WiMAX antenna; monopole antenna; asymmetry ground plane; rectangular slit;
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