Abstract
This research reports a conformal ultra-compact millimeter-Wave microwave access narrowband four-port MIMO60.0 GHz antenna designed for 60.0 GHz future high-speed wireless applications. The proposed 60.0 GHz MIMO60.0 GHz antenna radiating electromagnetic energy occupies a minimal space of 16 × 16 mm2 with a rectangular patch connected to defected microstrip structure on one-plane of RogersRTDuroidTM5880 substrate with a thickness of 0.254 mm and complete-ground on the opposite plane. The proposed MIMO60.0 GHz EM-wave antenna offers measured impedance bandwidth of 58.925 GHz–60.66 GHz with S11 = −35.79 dB at 59.945 GHz. The proposed MIMO60.0 GHz technology antenna offers a peak gain of 10.56dBi at 60.0 GHz. The thin substrate is characterized for conformal bending at 15◦, 30◦, and 45◦ with no change in the center resonance frequency which is centered at 60.0 GHz. The MIMO60.0 GHz antenna also offers good diversity performance including ECC60.0 GHz \(\le 0.50\), DG60.0 GHz \(\cong\) 10.0 dB, TARC60.0 GHz \(\le 0.0\) dB, CCL60.0 GHz \(\le\) 0.40 b/s/Hz and MEGport1/MEGport1 \(\cong\) 0.0 dB which values are under the standard-ideal values. The SAR values for single and four-port MIMO antenna corresponds to \(\le\) 1.60 W/Kg and all the above features of the proposed MIMO60.0 GHz antenna make it suitable for wearable (conformal) wireless applications and future mobile users.








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Acknowledgements
Authors are thankful to Chitkara University, Punjab, India for providing characterization of the antenna under the Fund for Improvement of S&T Infrastructure (FIST) with project No. SR/FST/ET-1/2023/1130, Department of Science & Technology, New Delhi, India.
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MS and AK finalized the design on simulation and generated all the results. VK and GJ contributed in writing all the equations and plotted the results. SB, NK and TB wrote the research paper draft, fabricated the prototype.
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Sharma, M., Kumar, A., Kikan, V. et al. Conformal ultra-compact narrowband 60.0 GHz four-port millimeter wave MIMO antenna for wearable short-range 5G application. Wireless Netw 30, 1815–1831 (2024). https://doi.org/10.1007/s11276-023-03610-3
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DOI: https://doi.org/10.1007/s11276-023-03610-3