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A low-profile SIW multi-beam antenna array fed by a compact two-layer 6 × 6 BFN

Published online by Cambridge University Press:  13 October 2023

Mohammad Mahdi Pezhman ,
Abbas Ali Heidari Open the ORCID record for Abbas Ali Heidari [Opens in a new window] ,
Ali Ghafoorzadeh-Yazdi ,
Fatemeh Homayoon  and
Hamed Shahraki
Mohammad Mahdi Pezhman
Affiliation:
Department of Electrical Engineering, Yazd University, Yazd, Iran Department of Electrical Engineering, Vali-e-Asr University, Rafsanjan, Iran
Abbas Ali Heidari*
Affiliation:
Department of Electrical Engineering, Yazd University, Yazd, Iran
Ali Ghafoorzadeh-Yazdi
Affiliation:
Department of Electrical Engineering, Yazd University, Yazd, Iran
Fatemeh Homayoon
Affiliation:
Department of Electrical Engineering, Yazd University, Yazd, Iran
Hamed Shahraki
Affiliation:
Department of Electrical Engineering, Velayat University, Iranshahr, Iran
*
Corresponding author: Abbas Ali Heidari; Email: [email protected]
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Abstract

This paper presents a low-profile six-beam antenna implemented by a compact two-layer 6 × 6 beamforming network (BFN) and a 6 × 2 slot antenna in substrate integrated waveguide (SIW) technology. The main components of the proposed 6 × 6 BFN are 3 × 3 multi-aperture couplers, interlayer hybrid couplers, and several phase shifters which are embedded on two microwave substrates. The proposed antenna has been designed, simulated, and fabricated for the frequency range of 28–32 GHz. The size of this antenna is 82 × 31.8 × 0.787 mm3, which can be a suitable choice for 5G applications due to its compact dimensions compared to similar works. Prototype testing shows that the proposed structure presents a stable beamforming performance both in simulation and measurement with good agreement. The antenna generates six radiation beams in directions ±9°, ±30°, and ±54° with good return losses and isolations.

Keywords

5G applications6 × 6 BFNbeamforming networkhybrid couplerinterlayer crossovermulti-aperture couplersmultibeam antennaphase shifterSIW-technologyslot array
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 16 , Issue 4 , May 2024 , pp. 559 - 566
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Copyright
© The Author(s), 2023. Published by Cambridge University Press in association with the European Microwave Association

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