Mutual Coupling Reduction between High-density, Broadband, Dual-polarized Cross-dipoles Using Composite Isolator

Sun, Xiaoshuai; Tang, Ming‐Chun; Xiong, Deping; Tan, Xiaoheng

doi:10.23919/aces48530.2019.9060468

Cited by 2 publications

(1 citation statement)

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“…In [11], we numerically reported a composite isolator (CI) structure for the decoupling of high‐density arrays. Due to its planar printed form, the developed CI could be easily integrated into closely spaced arrays for broadband dual‐polarization base station antenna array systems without occupying additional concerning transverse space or increasing the overall thickness.…”

Section: Introductionmentioning

confidence: 99%

Decoupling of high‐density, dual‐polarized, cross‐dipole arrays using broadband low‐profile composite isolator

Xiong

Sun

et al. 2021

IET Microwaves Antenna & Prop

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A low-profile composite isolator (CI) for the decoupling of broadband, high-density, dual-polarized cross-dipole arrays is introduced and investigated. The CI is composed of periodically resonant strips and a metallic wall, which are etched on both sides of a thin dielectric-slab and vertically placed above the ground plane. The collaboration between the strips and the wall empowers the CI's broadband operation performance characteristics with low profile (0.16 λ 0) and ultra-thin thickness (0.0045 λ 0). A two-element crossdipole array loaded with CI is fabricated and tested to verify its decoupling effect. The two ±45°dual-polarized cross-dipole elements with impedance bandwidth of 45% (ranging from 1.7 to 2.7 GHz) are built with centre-to-centre distance of 0.45 λ 0 (λ 0 corresponds to free space wavelength at 1.7 GHz). The measured results, in good agreement with the simulation values, indicated that, after loading CI, the array witnessed 10 dB co-polarized and 5 dB cross-polarized isolation improvements while maintaining stable radiation patterns over the entire operational band, without increasing the overall array height. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Introductionmentioning

confidence: 99%