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Design and implementation of MIMO graphene patch antenna to improve isolation for THz applications

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Abstract

In THz band Graphene Multiple-Input-Multiple-Output (MIMO) patch antennas are used widely due to high mobility, saturation velocity and its high electrical conductivity. High gain patch antennas are preferred for path losses as well as minimized atmospheric attenuation in Terahertz band. This article presents a MIMO graphene-based patch antenna with 10 dB impedance bandwidth of 3.572–3.6818 THz. The graphene-based MIMO design parameters like Channel Capacity Loss (CCL), Total Active Reflection Coefficient (TARC), Mean Effective Gain (MEG), Diversity Gain (DG) and Envelope Correlation Coefficient (ECC) are evaluated and found that within acceptable limits for the proposed design. The graphene MIMO based structure offers CCL < 0.5 bps/Hz/sec, TARC≤ –10.0 dB, ECC < 0.02, DG ≈ 10 dB and MEG ≤ –3.0 dB at the resonant frequency. At the operating band isolation among the radiating elements of the MIMO design more than 50 dB. The proportional relationship between graphene patch and physical entities of the proposed antenna are chosen in a manner to operate in single mode with resonance of TM12 (mode). This operation is quickened by the massive affability of graphene material in selecting the frequency of the antenna response.

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This research is not funded by any funding agency.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, BVRIT HYDERABAD College of Engineering for Women, Bachupally, Hyderabad, Telangana, India

    K. Vasu Babu

  2. Department of Electronics and Communication Engineering, Vasireddy Venkatadri Institute of Technology, Nambur, Guntur, A.P, India

    Pathula Christina Shifali, Jogi Manisha, Gurrala Durga Bhavani & Gorre Naga Jyothi Sree

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  1. K. Vasu Babu
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  2. Pathula Christina Shifali
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  3. Jogi Manisha
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  4. Gurrala Durga Bhavani
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  5. Gorre Naga Jyothi Sree
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Correspondence to K. Vasu Babu.

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Babu, K.V., Shifali, P.C., Manisha, J. et al. Design and implementation of MIMO graphene patch antenna to improve isolation for THz applications. Microsyst Technol 29, 1443–1453 (2023). https://doi.org/10.1007/s00542-023-05536-4

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  • DOI: https://doi.org/10.1007/s00542-023-05536-4

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