Compact super-wideband MIMO antenna with improved isolation for wireless communications

被引:21
|
作者
Singh, Ajit Kumar [1 ]
Mahto, Santosh Kumar [1 ]
Sinha, Rashmi [2 ]
机构
[1] Indian Inst Informat Technol, Dept Elect & Commun Engn, Ranchi 834010, Jharkhand, India
[2] Natl Inst Technol, Dept Elect & Commun Engn, Jamshedpur 831014, Bihar, India
关键词
bandwidth dimension ratio(BDR); channel capacity loss (CCL); MIMO; miniaturized antenna; mutual coupling; MONOPOLE ANTENNA; FRACTAL ANTENNA; PATCH ANTENNA; DESIGN; BANDWIDTH;
D O I
10.1515/freq-2020-0213
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper presents a miniaturized dual-element Super-Wideband (SWB) Multiple-Input-Multiple-Output (MIMO) antenna. The operation bandwidth is enhanced by 175% with a Bandwidth Dimension Ratio (BDR) of 6960, using a tapered microstrip line and employing an improved isolation technique. An inverted T-slot is used in the partial ground plane of the antenna. Isolation is increased up to 25 dB over the operating band (1.6-24.5 GHz) by using a pair of T-shaped stubs and a rectangular strip between them. A detailed analysis of the parameters Envelope Correlation Coefficient (ECC), Diversity Gain (DG), Mean Effective Gain (MEG), Total Active Reflection Coefficient (TARC), isolation between the ports, and Channel Capacity Loss (CCL) is undertaken to investigate the performance of proposed SWB MIMO antenna. A prototype of the proposed design is developed by fabricating on the FR-4 (loss tangent 0.02) dielectric substrate of electrical dimension 0.18 lambda(0) x 0.14 lambda(0). The measured parameters are in good agreement with the simulated ones. The proposed antenna focusses on 2.4-2.483 GHz frequency band (Bluetooth) and 3.4-3.6 GHz frequency band with a center frequency of 3.5 GHz (as part of the sub 6 GHz 5G band).
引用
收藏
页码:407 / 417
页数:11
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