Summary
International Symposium on Antennas and Propagation
2006
Session Number:3POS
Session:
Number:3POS-9
Gain incremental binomial array antenna with ground embedded ring-sector slots
J. W. Baik, S. J. Kim, Y.-S. Kim,
pp.1-3
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
A single-feed circularly polarized (CP) microstrip binomial antenna array with asymmetric ring-sector two-pair slots embedded on the ground plane for gain increment is presented in this paper. The binomial feed network is simply achieved using the annealing technique. Input port is placed at the one side of array elements. This unequal power divider is composed of quarter and three quarter wave transformer. From the binomial structure and ground embedded slots, despite FR4-substrate with low radiation efficiency, high antenna gain can be obtained because the ground embedded slot can increase the radiation efficiency by decreasing the quality factor of a microstrip antenna and asymmetric ringsector two-pair slots on the ground plane can easily increase an antenna gain. The antenna gain and CP performance can be adjusted by the ring-sector slot size. Details of the binomial feed network and antenna design are described. The performance of the proposed antenna has been analyzed.