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Low Mutual Coupling with High Efficiency Circularly Polarized MIMO DRA for On-Chip mm-Wave Applications
  • Rakhesh Singh Kshetrimayum ,
  • Mohit Mishra ,
  • Saikiran Kongari
Rakhesh Singh Kshetrimayum
IIT Guwahati

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Mohit Mishra
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Saikiran Kongari
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A low mutually coupled multiple-input multiple-output (MIMO) antenna is designed for on-chip millimetre-wave (mm-Wave) application. Two circularly polarized (CP) cylindrical dielectric resonator antennas (CDRA) with polarization diversity are placed over a double substrate silicon layer. Herein, a simple decoupling approach is applied to inhibit mutual coupling by introducing a metal plate in the substrate between the two DRAs. According to the simulation results, the inserted metallic plate improved isolation by 4-5 dB in the desired CP bandwidth. This is achieved while maintaining excellent radiation efficiency and gain, making the suggested antenna appropriate for mm-wave on-chip MIMO applications. (This paper has been submitted to  Asia-Pacific Microwave Conference 2022 (APMC 2022) )