Summary
International Symposium on Antennas and Propagation
2014
Session Number:FR4B
Session:
Number:FR4B_04
Pattern Reconfigurable Slot Antenna with Broadband Operation
Yan-Hua Chen, Jeen-Sheen Row,
pp.-
Publication Date:2014/12/2
Online ISSN:2188-5079
Summary:
A pattern reconfigurable design using a single-feed slot antenna is presented. Several PIN diodes are embedded into the ground plane, and by controlling the states of the diodes, the antenna structure can be worked as a 0.5λ slot antenna and a 0.75λ monopole slot antenna. A prototype is designed to give three different radiation modes in the H-plane, and these modes can respectively generate an omnidirectional pattern and two unidirectional patterns with reversed main-beam directions. Experimental results indicate that the omnidirectional mode has a gain variation of about 6 dB across all azimuthal angles and the unidirectional mode has a front-to-back ratio of higher than 10 dB. In addition, the working bandwidth of the reconfigurable antenna is more than 15 %.