TY - GEN
T1 - Decoupling of Wideband Closely-Spaced Patch Antennas for MIMO Applications
AU - Shao, Zijian
AU - Ma, Lina
AU - Gu, Changzhan
AU - Sengupta, Kaushik
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - A simple decoupling technique based on a single-layer substrate is proposed for wideband closely-spaced patch antennas. By combining the coplanar decoupling structure (CDS) and defected ground structure (DGS), the strong coupling between wideband closely-spaced patch antennas can be significantly suppressed across the operating band without an additional substrate layer. To validate the feasibility of the proposed decoupling schemes, two decoupled wideband antenna prototypes with microstrip and probe gap-coupled feeding are designed, simulated, and measured at ISM and X band, respectively. Experimental results show that the H-plane decoupled prototype achieves over 15 dB isolation across a wide matched bandwidth of 18.4% with an edge-to-edge separation of 0.038 λ0 and the E-plane decoupled prototype achieves beyond 20 dB isolation across a wide matched bandwidth of 22.2% with an edge-to-edge separation of 0.033 λ0. Featuring a compact appearance, wideband operation, and strong-coupling suppression, the proposed decoupling technique is promising in wideband multiple-input and multiple-out (MIMO) applications.
AB - A simple decoupling technique based on a single-layer substrate is proposed for wideband closely-spaced patch antennas. By combining the coplanar decoupling structure (CDS) and defected ground structure (DGS), the strong coupling between wideband closely-spaced patch antennas can be significantly suppressed across the operating band without an additional substrate layer. To validate the feasibility of the proposed decoupling schemes, two decoupled wideband antenna prototypes with microstrip and probe gap-coupled feeding are designed, simulated, and measured at ISM and X band, respectively. Experimental results show that the H-plane decoupled prototype achieves over 15 dB isolation across a wide matched bandwidth of 18.4% with an edge-to-edge separation of 0.038 λ0 and the E-plane decoupled prototype achieves beyond 20 dB isolation across a wide matched bandwidth of 22.2% with an edge-to-edge separation of 0.033 λ0. Featuring a compact appearance, wideband operation, and strong-coupling suppression, the proposed decoupling technique is promising in wideband multiple-input and multiple-out (MIMO) applications.
KW - Microstrip antennas
KW - antenna decoupling
KW - multiple-input and multiple-out (MIMO)
KW - wideband antennas
UR - http://www.scopus.com/inward/record.url?scp=85172418842&partnerID=8YFLogxK
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U2 - 10.1109/USNC-URSI52151.2023.10238189
DO - 10.1109/USNC-URSI52151.2023.10238189
M3 - Conference contribution
AN - SCOPUS:85172418842
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
SP - 1457
EP - 1458
BT - 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023
Y2 - 23 July 2023 through 28 July 2023
ER -