Summary
International Symposium on Antennas and Propagation
2006
Session Number:3D2a
Session:
Number:3D2a-3
Performance of Bidirectional and Unidirectional Elliptical Ring Antennas Fed by Circular Disc Monopole
Krittaya Chawanonphithak, Chuwong Phongcharoenpanich, Sompol Kosulvit, Monai Krairiksh,
pp.1-6
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
This paper presents the characteristics of bidirectional and unidirectional elliptical ring antenna fed by circular disc monopole. The antenna design for dual band radiation is studied to meet the requirement of low-cost and simple configuration together with of being bidirectional pattern or unidirectional pattern. The characteristics of the proposed antennas were investigated by using Computer Simulation Technology (CSTR). The mode effect of the elliptical waveguide and the feeder are firstly introduced to determine the lower edge bandwidth of the proposed antenna. From the simulation, the proposed antennas can achieve bidirectional pattern and unidirectional pattern over the bandwidth of the Personal Communication System band (PCS: 1.85 ? 1.99 GHz) and the Industrial Science Medical band (ISM: 2.40 ? 2.48 GHz). The bidirectional radiation pattern is desirable for many applications in long and narrow path service cell and the unidirectional radiation pattern is applicable for very long cell communication or point to point communication.