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A wide-angle pattern diversity antenna system for mmWave 5G mobile terminals
Sadananda, K.G. Elfergani, Issa T. Zebiri, C. Rodriguez, Jonathan Koul, S.K.
Sadananda, K.G.
Elfergani, Issa T.
Zebiri, C.
Rodriguez, Jonathan
Koul, S.K.
Publication Date
2022-02
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© 2022 by the authors.
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://
creativecommons.org/licenses/by/
4.0/).
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openAccess
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2022-02-10
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Abstract
A shared ground shared radiator with wide angular coverage for mmWave 5G smartphones is proposed in this paper. A four-element corporate-fed array with conventional impedance matched power divider is designed. Stepped impedance transformers are integrated with the corner most elements to achieve pattern diversity with wide angular coverage without signifi-cant compromise in gain. The proposed three-port shared radiator conformal commercial an-tenna could be easily integrated with commercial mmWave 5G smartphones. All the three ports’ excitations operate in the 28 GHz band. Radiation pattern bandwidth of the multi-port system is high. The gain variation is from 6 to11 dBi amongst the ports and across the operating spectrum. The highest mutual coupling is 10 dB, in spite of the electrically connected structure. The pro-posed shared radiator element has a wide angular coverage of 100°, maintaining high front-to-back ratio when the respective port is excited. Simulation and measurement results for the proposed structure are illustrated in detail.
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Citation
Sadananda KG, Elfergani I, Zebiri C et al (2022) A wide-angle pattern diversity antenna system for mmWave 5G mobile terminals. Electronics. 11(4): 571.
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