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A Beam-Switchable Antenna Using Dielectric Image Guide with a Movable Periodic Metal Plate
Toru IWASAKI Tetsuomi IKEDA Takao KUKI
B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2008/07/01
Online ISSN: 1881-0209
Print ISSN: 1344-4697
Type of Manuscript: PAPER
beam-switching, image guide, periodic structure, leaky-wave antenna, surface-wave antenna,
Full Text(in Japanese): PDF(633.3KB)
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In this paper, we propose a millimeter-wave beam-switchable antenna using a dielectric image guide above which a movable periodic metal plate is placed. This antenna can easily change the beam in the endfire and broadside directions by combining the behavior of a surface-wave antenna and a leaky-wave antenna. We also study a structure to suppress sidelobe due to the remaining power of the leaky-wave antenna by loading a sloping metal reflector at the end of the periodic metal plate. The measurement results indicate that there are good beam-switching performances producing the beam in the endfire and broadside direction.