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High Permittivity LSE-NRD Guide and Its Application to a New Type of Millimeter Wave Antenna
Futoshi KUROKI Motofumi YAMAGUCHI Yasujirou MINAMITANI Tsukasa YONEYAMA
IEICE TRANSACTIONS on Electronics
Publication Date: 2003/02/01
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Circuit and Device Technology for High-Speed Wireless Communication)
Category: Guided Wave & Antenna
nonradiative dielectric waveguide, guided waves, millimeter-wave antenna feeders, millimeter-wave fan beam antennas,
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Transmission characteristics of a high permittivity NRD guide were investigated. A preferable operating mode of the high permittivity NRD guide was newly identified and the wide bandwidth and low loss nature of the millimeter-wave region were observed. Moreover, a technique for construction of a millimeter-wave antenna was developed based on the high permittivity NRD guide. The novelty of the present technique lies in the use of a simple radiator, which consists of a tapered dielectric strip of simple structure which has good compatibility with millimeter wave integrated circuits. Since this radiator has a broad radiation pattern, a new type of antenna compatible with millimeter-wave integrated circuits for marine radar use was fabricated by locating the radiator at the focal point of a cylindrical parabolic reflector. Suitable beam patterns with half-power beam widths of 4in the azimuth plane and 38in the elevation plane can be obtained at 35 GHz.