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IEICE TRANSACTIONS on Communications

Low Sidelobe Single-Layer Slotted Waveguide Arrays at 76 GHz Band

Yuichi KIMURA, Kenji FUKAZAWA, Jiro HIROKAWA, Makoto ANDO, Naohisa GOTO

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Summary :

This paper presents the design of low sidelobe single-layer slotted waveguide arrays. The Taylor distribution with -25 dB sidelobe level is synthesized in two orthogonal directions in the aperture. The multiple-way power divider consisting of a cascade of novel π-junctions is introduced; each π-junction, two-way power divider, is so designed as to accept unequal power dividing by adopting an offset window. The smooth Taylor distribution is realized at the output of the multiple-way power divider, which was originally developed only for uniform distribution. A model antenna for Taylor distribution is tested at 76 GHz. The measured sidelobe level is below -24 dB in both E- and H-plane. The highest gain is 34.5 dBi with 50% efficiency which is only 15% lower than that for uniform aperture illumination.

Publication
IEICE TRANSACTIONS on Communications Vol.E84-B No.9 pp.2377-2386
Publication Date
2001/09/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems)
Category
Millimeter-Wave Antennas

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