Summary
International Symposium on Antennas and Propagation
2006
Session Number:3POS
Session:
Number:3POS-2
Experimental Investigations into Grating Lobe Suppression in Distributed Array Antennas
Kazushi Nishizawa, Kazufumi Hirata, Shin-ichiro Kan, Hiroaki Miyashita, Shigeru Makino,
pp.1-4
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
The appearance of grating lobes is one of the major issues concerning distributed array antennas (DAA) since the lobes cause antenna gain reduction. This study presents an experimental verification of grating lobe suppression in DAA. A prototype model of the antenna is a linear array and comprises eight subarrays, each of which includes eight elements at intervals of half the wavelength. An optimal subarray arrangement of low sidelobe that is extracted from all the cases under the conditions that the number of subarrays and their size are fixed is determined and applied to the experimental distributed array. The radiation pattern results of this array confirmed that the arrangement could achieve a lower sidelobe level than that achieved by the equal interval arrangement.