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A Four-Port CSRR-Loaded Dual-Band MIMO Antenna with Suppressed Higher Order Modes

Dash, JC and Sarkar, D (2022) A Four-Port CSRR-Loaded Dual-Band MIMO Antenna with Suppressed Higher Order Modes. In: IEEE Access, 10 . pp. 30770-30778.

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Official URL: https://doi.org/10.1109/ACCESS.2022.3160831


In this paper, we propose a compact four-port dual-band MIMO antenna with suppressed higher order modes (HOMs). First, complementary split ring resonator (CSRR) loading is used on a square microstrip antenna to achieve simultaneous miniaturization and dual-band response. Next, the HOMs in the proposed CSRR loaded MIMO configuration are analysed using equivalent circuit model as well as surface current distribution plots. By placing a single shorting post close to antenna center line, these HOMs of the four-port dual-band MIMO antenna are then suppressed, while maintaining satisfactory mutual coupling (<-11 dB) and impedance matching (<-15 dB) performance in the operating band. Furthermore, simulated and measured values of total active reflection coefficient (TARC), envelop correlation coefficient (ECC) and channel capacity loss (CCL) are within the desired levels of -10 dB, 0.5 and 0.5 bits/s/Hz respectively, signifying good diversity performance of the proposed MIMO antenna. © 2013 IEEE.

Item Type: Journal Article
Publication: IEEE Access
Publisher: Institute of Electrical and Electronics Engineers Inc.
Additional Information: The copyright for this article belongs to authors
Keywords: Antenna feeders; Electric current distribution measurement; Equivalent circuits; Microstrip antennas; Microwave antennas; MIMO systems; Ring gages; Slot antennas, Antenna feeds; Complementary split ring resonator; Complementary split-ring resonator; Currents distributions; High order mode; Higher-order-mode; Multiple input multiple output; Multiple-input multiple-output communications; Surface impedances, Optical resonators
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 17 May 2022 08:55
Last Modified: 17 May 2022 08:55
URI: https://eprints.iisc.ac.in/id/eprint/71868

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