Open AccessSynthesis of multi‐polarised upside conical frustum array antenna for 5G mm‐Wave base station at 28/38 GHz
Author(s) -
Mahmoud Korany R.,
Montaser Ahmed M.
Publication year - 2018
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2017.1138
Subject(s) - frustum , optics , antenna (radio) , radiation pattern , directivity , antenna measurement , antenna aperture , physics , engineering , telecommunications , mechanical engineering
In this study, a multi‐polarised millimetre‐wave (mm‐Wave) base station operating at 28/38 GHz is introduced for future fifth generation (5G) mobile communication networks. The proposed station employs 32‐element array antenna distributed in upside conical frustum configuration (UCFC) to synthesise multi‐beam patterns adopting directivity and polarisation control. First, the design of dual‐band circularly polarised antenna element at 28/38 GHz is discussed. The measured results show that the designed antenna element has a reflection coefficient less than −23 dB with a realised antenna gain of 8 dBi, on average, in the assigned frequency bands. Based on the designed antenna element, the antenna array performance is studied in terms of gain, radiation efficiency, reflection coefficient, and coverage efficiency. The results are compared with those obtained from 32‐element structured in an octagonal prism configuration (OPC). For antenna design parameters and multi‐beam pattern synthesis, a modified version of hybrid gravitational search algorithm and particle swarm optimisation is proposed. It is found that, the introduced UCFC outperformed the OPC by 19.8%. Moreover, distributing the antenna array in UCFC improved the convergence by 21.7% compared to OPC.