Fractal loaded planar Super Wide Band four element MIMO antenna for THz applications

IF 2.9 4区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Nano Communication Networks Pub Date : 2021-12-01 DOI:10.1016/j.nancom.2021.100374

Swarup Das, Debasis Mitra, Sekhar Ranjan Bhadra Chaudhuri

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引用次数: 18

Abstract

In this paper, a compact Super Wide Band (SWB) four element multiple-input-multiple-output (MIMO) antenna having an overall dimension of 125 $μ$ m $\times 125 μ$ m is presented for application in Terahertz (THz) frequency spectrum. This SWB MIMO antenna configuration consists of orthogonally placed four coplanar waveguide (CPW) fed half elliptical patch antennas with connected ground planes. Three types of fractal curves are suitably applied on this MIMO configuration to obtain enhanced impedance bandwidth and good isolation between antenna elements. The proposed design exhibits an impedance bandwidth ( $S_{11}$ $\leq$ −10 dB) from 0.72 THz to 10 THz (ratio impedance bandwidth 13.89:1) and an isolation more than 20 dB between all four antenna elements is obtained over the entire band of operation. Stable radiation characteristics with moderate amount of gain are also observed The other MIMO performance parameters like Envelop Correlation Coefficient (ECC), Diversity Gain (DG), Channel Capacity Loss (CCL) and Total Active Reflection Coefficient (TARC) are also within acceptable limit over the entire THz frequency of operation. The proposed design consists of more number of antenna elements with relatively smaller physical dimension compared to the existing SWB MIMO antenna designs available in literature in THz frequency range. Therefore, this proposed MIMO antenna design can be used for THz applications in future beyond the fifth generation (B5G) technology.

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用于太赫兹应用的分形加载平面超宽带四元MIMO天线

本文提出了一种外形尺寸为125μm×125μm的紧凑型超宽带（SWB）四元多输入多输出（MIMO）天线，用于太赫兹（THz）频谱。这种SWB MIMO天线配置由正交放置的四个共面波导（CPW）馈电的半椭圆贴片天线组成，这些天线具有连接的接地平面。三种类型的分形曲线被适当地应用于该MIMO配置，以获得增强的阻抗带宽和天线元件之间的良好隔离。所提出的设计表现出从0.72 THz到10 THz的阻抗带宽（S11≤−10 dB）（比阻抗带宽13.89:1），并且在整个操作频带上获得了所有四个天线元件之间超过20 dB的隔离。还观察到具有适度增益的稳定辐射特性。其他MIMO性能参数，如包络相关系数（ECC）、分集增益（DG）、信道容量损耗（CCL）和总有源反射系数（TARC），在整个太赫兹操作频率上也在可接受的限值内。与文献中在太赫兹频率范围内可用的现有SWB MIMO天线设计相比，所提出的设计包括更多数量的具有相对较小物理尺寸的天线元件。因此，所提出的MIMO天线设计可以用于第五代（B5G）技术之外的太赫兹应用。

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来源期刊

Nano Communication Networks Mathematics-Applied Mathematics

CiteScore

6.00

自引率

6.90%

发文量

期刊介绍： The Nano Communication Networks Journal is an international, archival and multi-disciplinary journal providing a publication vehicle for complete coverage of all topics of interest to those involved in all aspects of nanoscale communication and networking. Theoretical research contributions presenting new techniques, concepts or analyses; applied contributions reporting on experiences and experiments; and tutorial and survey manuscripts are published. Nano Communication Networks is a part of the COMNET (Computer Networks) family of journals within Elsevier. The family of journals covers all aspects of networking except nanonetworking, which is the scope of this journal.