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Fully Dielectric Phased Array for Beamsteering Using Liquid Crystal Technology at W-Band

Polat, E. and Reese, R. and Tesmer, H. and Nickel, M. and Jakoby, R. and Maune, H. (2020):
Fully Dielectric Phased Array for Beamsteering Using Liquid Crystal Technology at W-Band.
p. 5, 14th European Conference on Antennas and Propagation (EuCAP), Copenhagen, Denmark, 15.-20.03.2020, ISBN 978-1-7281-3712-4,
DOI: 10.23919/EuCAP48036.2020.9135584,
[Conference or Workshop Item]

Abstract

In this work, we present a liquid crystal based fully dielectric phased array for beamsteering at W-Band. The array consists of 1 x 4 tapered dielectric rod antennas, including liquid crystal phase shifters and a single multimode interference power divider as feeding network. With this approach, a fully dielectric beamsteering antenna is realized in a very lightweight, compact and low-loss design. Each rectangular phase shifter has a tapered dielectric rod antenna at its end. For beamsteering, dielectric subwavelength phase shifters are filled with a novel liquid crystal mixture. The realized demonstrator achieved a maximum scanning range of ± 10°. Moreover, the measured antenna gain is ranging between 13dB to 14dB with a side lobe level below – dB. The input reflection coefficient is below –10 dB over the whole W-band.

Item Type: Conference or Workshop Item
Erschienen: 2020
Creators: Polat, E. and Reese, R. and Tesmer, H. and Nickel, M. and Jakoby, R. and Maune, H.
Title: Fully Dielectric Phased Array for Beamsteering Using Liquid Crystal Technology at W-Band
Language: English
Abstract:

In this work, we present a liquid crystal based fully dielectric phased array for beamsteering at W-Band. The array consists of 1 x 4 tapered dielectric rod antennas, including liquid crystal phase shifters and a single multimode interference power divider as feeding network. With this approach, a fully dielectric beamsteering antenna is realized in a very lightweight, compact and low-loss design. Each rectangular phase shifter has a tapered dielectric rod antenna at its end. For beamsteering, dielectric subwavelength phase shifters are filled with a novel liquid crystal mixture. The realized demonstrator achieved a maximum scanning range of ± 10°. Moreover, the measured antenna gain is ranging between 13dB to 14dB with a side lobe level below – dB. The input reflection coefficient is below –10 dB over the whole W-band.

ISBN: 978-1-7281-3712-4
Uncontrolled Keywords: Phased array;dielectric waveguide;microwave liquid crystal;millimeter wave devices
Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics > Microwave Engineering
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics
Event Title: 14th European Conference on Antennas and Propagation (EuCAP)
Event Location: Copenhagen, Denmark
Event Dates: 15.-20.03.2020
Date Deposited: 03 Aug 2020 11:14
DOI: 10.23919/EuCAP48036.2020.9135584
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