Rectangular Ring Antenna Excited by Circular Disc Monopole for WiMAX System

Autor: Souphanna Vongsack, Chuwong Phongcharoenpanich, Sompol Kosulvit, Kazuhiko Hamamoto, Toshio Wakabayashi
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: International Journal of Antennas and Propagation, Vol 2014 (2014)
Druh dokumentu: article
ISSN: 1687-5869
1687-5877
DOI: 10.1155/2014/769816
Popis: This research presents a rectangular ring antenna excited by a circular disc monopole (CDM) mounted in front of a square reflector. The proposed antenna is designed to cover a frequency range of 2.300–5.825 GHz and thereby is suitable for WiMAX applications. Multiple parametric studies were carried out using the CST Microwave Studio simulation program. A prototype antenna was fabricated and experimented. The measurements were taken and compared with the simulation results, which indicates good agreement between both results. The prototype antenna produces an impedance bandwidth (|S11| < −10 dB) that covers the WiMAX frequency range and a constant unidirectional radiation pattern (θ=0° and ∅=90°). The minimum and maximum gains are 3.7 and 8.7 dBi, respectively. The proposed antenna is of compact size and has good unidirectional radiation performance. Thus, it is very suitable for a multitude of WiMAX applications.
Databáze: Directory of Open Access Journals
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