Compact Wideband Active Integrated Antenna Array Performance Enhancement Under High Mutual Coupling for 5G Applications
Amar, A.S.I. Sayed, A.S. Ojaroudi Parchin, S. Khaleel, S.A. El-Hennawy, H. Soliman, M.S. Darwish, M.
Amar, A.S.I.
Sayed, A.S.
Ojaroudi Parchin, S.
Khaleel, S.A.
El-Hennawy, H.
Soliman, M.S.
Darwish, M.
Publication Date
2025-12-10
End of Embargo
Supervisor
Rights
(c) 2025 The Authors. This is an Open Access article distributed under the Creative Commons CC-BY license (https://creativecommons.org/licenses/by/4.0/)
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
2025-11-18
Institution
Department
Awarded
Embargo end date
Additional title
Abstract
This paper presents a compact solution for the design and analysis of the Active Integrated Antenna Array (AIAA) to improve its performance under high mutual coupling and mismatch losses. A simple compensation network (CN) is introduced to eliminate the mismatches in AIAA introduced by the antenna elements’ mutual coupling, which negatively impacts the power amplifier (PA) performance, rather than the previously proposed complex methods. The AIAA consists of a wideband GaN power amplifier (PA) transistor operating from 3 to 5 GHz, a wideband 4-element antenna array with λ g/2 spacing between elements at 3.8 GHz operating from 3.6 to 4 GHz for 5G applications, and a compensation network designed to mitigate mismatch effects. To verify the proposed approach, two AIAA prototypes are measured, one with the CNs connected between each PA and the corresponding antenna element, and the other with the antenna elements directly connected to the PAs. Experimental results show that the minimum realized gain of the proposed AIAA is more than 19.3 dBi over the operating bandwidth, with an enhancement of more than 2.5 dBi when compared to the conventional AIAA, where no CNs are used. Simulations and experimental results are presented along with detailed design and measurement procedures.
Version
Published version
Citation
Amar ASI, Sayed AS, Ojaroudi Parchin N et al (2025) Compact Wideband Active Integrated Antenna Array Performance Enhancement Under High Mutual Coupling for 5G Applications. IEEE Access. 13: 206460-206474.
Link to publisher’s version
Link to published version
Link to Version of Record
Type
Article