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Compact dual-band design and analysis of half-circular U-shape MIMO radiator for wireless applications
Microsystem Technologies ( IF 2.1 ) Pub Date : 2022-08-18 , DOI: 10.1007/s00542-022-05359-9
K. Vasu Babu , Pasumarthi Srinivasa Rao , B. Chandrababu Naik , B. Ravi Kumar

A key parameter of 5G communication is MIMO technology in the forthcoming years. In order to maintain best MIMO system the correlation between the antennas is < 0.2. The distance between the patches is 2.5 mm is considered by parametric study that reduces the transmission coefficient (S12) is − 45 dB and − 33.5 dB at lower and higher bands. The impedance bandwidths at measured frequencies are 830 MHz and 2.37 GHz, radiation efficiencies of 88.9% and 84.91%, realized gains of 3.10 dBi and 3.58 dBi. The antenna occupies the total area is 0.45λ0 × 0.291λ0 × 0.03λ0 with reflection coefficient (S11) is − 41.25 dB and − 14.58 dB. The group delay (GD) of − 18.009 ± 1ns observed from the simulation results with S11 of − 41.27 dB is obtained by IBW of 790 MHz. At the both resonating bands ECC is slightly lower than the 0.04. The dual-band antenna has a good radiation pattern, advisable VSWR, gain characteristics and radiation efficiency which are acceptable for limited wireless communication applications.



中文翻译:

面向无线应用的半圆形 U 型 MIMO 辐射器的紧凑型双频设计与分析

未来几年,5G 通信的一个关键参数是 MIMO 技术。为了保持最佳 MIMO 系统,天线之间的相关性小于 0.2。贴片之间的距离为 2.5 mm,通过参数研究考虑,降低了传输系数 (S 12 ) 在较低和较高频段分别为 - 45 dB 和 - 33.5 dB。测量频率下的阻抗带宽为 830 MHz 和 2.37 GHz,辐射效率分别为 88.9% 和 84.91%,实现增益分别为 3.10 dBi 和 3.58 dBi。天线占据的总面积为0.45λ 0  × 0.291λ 0  × 0.03λ 0,反射系数(S 11)为−41.25 dB和−14.58 dB。从 S 的模拟结果中观察到的群延迟 (GD) 为 − 18.009 ± 1ns− 41.27 dB 的11由 790 MHz 的 IBW 获得。在两个谐振频带,ECC 略低于 0.04。双频天线具有良好的辐射方向图、可取的驻波比、增益特性和辐射效率,对于有限的无线通信应用来说是可以接受的。

更新日期:2022-08-19
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