Abstract

The research article outlines the evolution of a quad-element Luna-shaped UWB MIMO with enhanced isolation and gain using novel decoupling networks. The described MIMO module is tailored on a FR4 substrate of area 45 × 45 mm² (0.378 λ₀ × 0.378 λ₀), where λ₀ is estimated at 2.52 GHz, and 7 mm (0.0588 λ₀) element to element separation between the radiators. It has 4 Luna-shaped radiators. The results achieved are S₁₁ ≤ − 10 dB over the band 2.52–11.10 GHz, S₂₁ ≤ − 20.75 dB, and S₃₁ ≤ − 20.10 dB. The peak gain is 6.6 dBi, maximum efficiency is 98%, ECC ≤ 0.15, TARC ≤ − 10 dB, DG ≤ 10, MEG ratio ≈ 1, and CCL < 0.3 bps/Hz. This MIMO module is simulated by ANSYS HFSS and also measured results are presented.

中文翻译：

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四元件月形 UWB-MIMO 天线，使用新颖的去耦网络提高隔离度和增益

摘要

该研究文章概述了四元件 Luna 形 UWB MIMO 的演变，该 MIMO 使用新颖的去耦网络增强了隔离度和增益。^{所描述的 MIMO 模块是在面积为 45 × 45 mm 2} (0.378 λ ₀  × 0.378 λ ₀ )的 FR4 基板上定制的，其中 λ ₀估计为 2.52 GHz，并且 7 mm (0.0588 λ ₀ ) 之间的元件到元件间隔散热器。它有 4 个月神形散热器。所获得的结果是 在 2.52–11.10 GHz 频段上S _{11 ≤ − 10 dB、S 21}  ≤ − 20.75 dB 和 S ₃₁  ≤ − 20.10 dB。峰值增益为 6.6 dBi，最大效率为 98%，ECC ≤ 0.15，TARC ≤ − 10 dB，DG ≤ 10，MEG 比率 ≈ 1，CCL < 0.3 bps/Hz。该 MIMO 模块通过 ANSYS HFSS 进行仿真，并给出了测量结果。