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Electronics 2017, 6(4), 107; https://doi.org/10.3390/electronics6040107

Substrate-Integrated Waveguide PCB Leaky-Wave Antenna Design Providing Multiple Steerable Beams in the V-Band

1
ZHO/Optoelectronics, University of Duisburg-Essen, 47057 Duisburg, Germany
2
Electronic Navigation Research Institute, National Institute of Maritime, Port and Aviation Technology, Chofu, Tokyo 1820012, Japan
*
Author to whom correspondence should be addressed.
Received: 23 October 2017 / Revised: 24 November 2017 / Accepted: 4 December 2017 / Published: 7 December 2017
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Abstract

A periodic leaky-wave antenna (LWA) design based on low loss substrate-integrated waveguide (SIW) technology with inset half-wave microstrip antennas is presented. The developed LWA operates in the V-band between 50 and 70 GHz and has been fabricated using standard printed circuit board (PCB) technology. The presented LWA is highly functional and very compact supporting 1D beam steering and multibeam operation with only a single radio frequency (RF) feeding port. Within the operational 50–70 GHz bandwidth, the LWA scans through broadside, providing over 40° H-plane beam steering. When operated within the 57–66 GHz band, the maximum steering angle is 18.2°. The maximum gain of the fabricated LWAs is 15.4 dBi with only a small gain variation of +/−1.5 dB across the operational bandwidth. The beam steering and multibeam capability of the fabricated LWA is further utilized to support mobile users in a 60 GHz hot-spot. For a single user, a maximum wireless on-off keying (OOK) data rate of 2.5 Gbit/s is demonstrated. Multibeam operation is achieved using the LWA in combination with multiple dense wavelength division multiplexing (WDM) channels and remote optical heterodyning. Experimentally, multibeam operation supporting three users within a 57–66 GHz hot-spot with a total wireless cell capacity of 3 Gbit/s is achieved. View Full-Text
Keywords: 5G mobile communications; beam steering; fiber-wireless communication; leaky-wave antennas; millimeter wave wireless; radio-over-fiber; substrate-integrated waveguide 5G mobile communications; beam steering; fiber-wireless communication; leaky-wave antennas; millimeter wave wireless; radio-over-fiber; substrate-integrated waveguide
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Steeg, M.; Yonemoto, N.; Tebart, J.; Stöhr, A. Substrate-Integrated Waveguide PCB Leaky-Wave Antenna Design Providing Multiple Steerable Beams in the V-Band. Electronics 2017, 6, 107.

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