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Dual-Band Reflective Metasurfaces for 5G mmWave Applications: Design, Analysis, and Waveguide Validations
Author(s)
Mohammed, Sunusi Garba
Samsuri, Noor Asmawati Binti
Rahim, Mohamad Kamal B.A.
Ripin, Nabilah Binti
Taufiqqurrachman
Yaziz, Nur Syahirah Mohd
Khawaja, Bilal A.
Karimbu Vallappil, Arshad
Waad, Ali Abdulhussein
Date Issued
January 1, 2026
Type
Article
Abstract
This paper presents a dual-band reflective metasurface unit cell for millimeter-wave RIS applications operating at 26 GHz and 28 GHz, covering the 5G n258 and n257 bands. The proposed design features a hybrid resonator structure to achieve a consistent phase trend and strong reflection performance across the 5G mmWave frequency band. To ensure stable dual-band performance of the unit cell, parametric optimization is conducted. The unit cell is investigated through Floquet simulations and WR-34 rectangular -to-square waveguide-transition-based full-wave simulations, followed by experimental validation using a fabricated WR-34 rectangular-to-square waveguide transition. The simulated resonances at 26 GHz and 28 GHz are experimentally observed at 26.7 GHz and 28.9 GHz, respectively, indicating minor frequency deviations. Measured results demonstrate reflection magnitudes of -1.80 dB at 26.7 GHz and -0.80 dB at 28.9 GHz, with corresponding phase responses of - 68° and -13°, and bandwidths of 5.12% and 6.07%, respectively.
Citation
IEEE Access, 14, 100633-100641, 2026