A Dual-Polarized PIFA Array with CM/DM Excitations for Low-Coupling Airborne Applications

Ke Xin Zhai; Bi Yi Wu; Yuan Zeng; Xin Qing Sheng

doi:10.1109/ICCEM68495.2026.11628905

A Dual-Polarized PIFA Array with CM/DM Excitations for Low-Coupling Airborne Applications

Ke Xin Zhai
, Bi Yi Wu^*
, Yuan Zeng
, Xin Qing Sheng

^*Corresponding author for this work

Beijing Institute of Technology
Commercial Aircraft Corporation of China, Ltd.

Research output: Contribution to journal › Conference article › peer-review

Abstract

This paper presents a low-profile dual-polarized PIFA MIMO array for 4.9-GHz airborne ATG communications. The design exploits CM/DM excitations for dual polarization and self-decoupling, while inter-element slots are introduced to suppress array-level coupling on the shared ground plane. In addition, a reflector is incorporated to emulate the metallic fuselage environment and suppress backward radiation. Simulations show that the proposed array operates over 4.85-4.95 GHz, improves S21 from about -10 dB to -18 dB, and increases the forward realized gain to 7.8 dB while reducing the backward realized gain below -18 dB under DM excitation. The proposed structure is therefore promising for compact airborne Sub-6 GHz array integration.

Original language	English
Journal	IEEE International Conference on Computational Electromagnetics, ICCEM
Issue number	2026
DOIs	https://doi.org/10.1109/ICCEM68495.2026.11628905
Publication status	Published - 2026
Externally published	Yes
Event	2026 IEEE International Conference on Computational Electromagnetics, ICCEM 2026 - Shanghai, China Duration: 10 Apr 2026 → 12 Apr 2026

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10.1109/ICCEM68495.2026.11628905

Cite this

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title = "A Dual-Polarized PIFA Array with CM/DM Excitations for Low-Coupling Airborne Applications",

abstract = "This paper presents a low-profile dual-polarized PIFA MIMO array for 4.9-GHz airborne ATG communications. The design exploits CM/DM excitations for dual polarization and self-decoupling, while inter-element slots are introduced to suppress array-level coupling on the shared ground plane. In addition, a reflector is incorporated to emulate the metallic fuselage environment and suppress backward radiation. Simulations show that the proposed array operates over 4.85-4.95 GHz, improves S21 from about -10 dB to -18 dB, and increases the forward realized gain to 7.8 dB while reducing the backward realized gain below -18 dB under DM excitation. The proposed structure is therefore promising for compact airborne Sub-6 GHz array integration.",

author = "Zhai, \{Ke Xin\} and Wu, \{Bi Yi\} and Yuan Zeng and Sheng, \{Xin Qing\}",

note = "Publisher Copyright: {\textcopyright} 2026 IEEE.; 2026 IEEE International Conference on Computational Electromagnetics, ICCEM 2026 ; Conference date: 10-04-2026 Through 12-04-2026",

year = "2026",

doi = "10.1109/ICCEM68495.2026.11628905",

language = "English",

journal = "IEEE International Conference on Computational Electromagnetics, ICCEM",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2026",

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T1 - A Dual-Polarized PIFA Array with CM/DM Excitations for Low-Coupling Airborne Applications

AU - Zhai, Ke Xin

AU - Wu, Bi Yi

AU - Zeng, Yuan

AU - Sheng, Xin Qing

PY - 2026

Y1 - 2026

N2 - This paper presents a low-profile dual-polarized PIFA MIMO array for 4.9-GHz airborne ATG communications. The design exploits CM/DM excitations for dual polarization and self-decoupling, while inter-element slots are introduced to suppress array-level coupling on the shared ground plane. In addition, a reflector is incorporated to emulate the metallic fuselage environment and suppress backward radiation. Simulations show that the proposed array operates over 4.85-4.95 GHz, improves S21 from about -10 dB to -18 dB, and increases the forward realized gain to 7.8 dB while reducing the backward realized gain below -18 dB under DM excitation. The proposed structure is therefore promising for compact airborne Sub-6 GHz array integration.

AB - This paper presents a low-profile dual-polarized PIFA MIMO array for 4.9-GHz airborne ATG communications. The design exploits CM/DM excitations for dual polarization and self-decoupling, while inter-element slots are introduced to suppress array-level coupling on the shared ground plane. In addition, a reflector is incorporated to emulate the metallic fuselage environment and suppress backward radiation. Simulations show that the proposed array operates over 4.85-4.95 GHz, improves S21 from about -10 dB to -18 dB, and increases the forward realized gain to 7.8 dB while reducing the backward realized gain below -18 dB under DM excitation. The proposed structure is therefore promising for compact airborne Sub-6 GHz array integration.

UR - https://www.scopus.com/pages/publications/105050187947

U2 - 10.1109/ICCEM68495.2026.11628905

DO - 10.1109/ICCEM68495.2026.11628905

M3 - Conference article

AN - SCOPUS:105050187947

SN - 2768-2552

JO - IEEE International Conference on Computational Electromagnetics, ICCEM

JF - IEEE International Conference on Computational Electromagnetics, ICCEM

IS - 2026

T2 - 2026 IEEE International Conference on Computational Electromagnetics, ICCEM 2026

Y2 - 10 April 2026 through 12 April 2026

ER -

A Dual-Polarized PIFA Array with CM/DM Excitations for Low-Coupling Airborne Applications

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