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Antenna System Composed of T-Shaped Elements Coupled to an Open Radial Waveguide

Hisamatsu Nakano, Yuhei Kameta, Toru Kawano, Amit Mehta Orcid Logo, Arpan Pal, Andrew Skippins, Junji Yamauchi

IEEE Transactions on Antennas and Propagation, Volume: 66, Issue: 2, Pages: 550 - 563

Swansea University Author: Amit Mehta Orcid Logo

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DOI (Published version): 10.1109/tap.2017.2779558

Abstract

An antenna system composed of an activated open radial waveguide (RadWG) and parasitic T-shaped elements is proposed as a high-gain antenna, where the radiation beam is steerable around the system axis. The T-shaped elements are proximity-coupled to the RadWG. It is found that the upper round plate...

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Published in: IEEE Transactions on Antennas and Propagation
ISSN: 0018-926X 1558-2221
Published: Institute of Electrical and Electronics Engineers (IEEE) 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa37795
Abstract: An antenna system composed of an activated open radial waveguide (RadWG) and parasitic T-shaped elements is proposed as a high-gain antenna, where the radiation beam is steerable around the system axis. The T-shaped elements are proximity-coupled to the RadWG. It is found that the upper round plate for the RadWG contributes to forming a desirable beam and increasing the gain. The beam steering with a gain of greater than targeted 9 dBi in 16 azimuthal directions is obtained by changing the location of open-state T-shaped elements whose height is 0.18 wavelength. Effects on the radiation characteristics of the system parameters, including the RadWG height, upper round plate diameter, ground plane diameter, and number of open-state T-shaped elements, are also analyzed and discussed.
Keywords: T-shaped element, radial waveguide, parasitic, multidirectional beams
College: Faculty of Science and Engineering
Issue: 2
Start Page: 550
End Page: 563

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