Dr. Lou Qun

National University of Singapore, Singapore

Paper Title: Q. Lou, C. Xue and Z. N. Chen, ``High-Efficiency Metalens Antenna Using Huygens’ Metasurface With Glide Symmetric I-Shape Metal Strips,`` in IEEE Transactions on Antennas and Propagation, vol. 69, no. 11, pp. 7394-7403, Nov. 2021.

Abstract: A Huygens’ Metasurface with unit cells of glide symmetric I-shape metal strips is proposed for a high-efficiency metalens antenna. The proposed unit cell achieves more than 98.6% transmission amplitude with 360° phase shift coverage for dual polarization. The mechanism is proposed by analyzing a unit cell with two dislocated I-shape metal strips, where the electric dipole and magnetic dipole resonances are tuned by the dislocation. The analysis implies that glide symmetric I-shape metal strips are preferable for high transmittance Huygens’ unit cell design. With the proposed Huygens’ unit cell, a high-efficiency metalens antenna is realized. The simulated and measured results show that the proposed metalens antenna of a 14-wavelength diameter achieves a maximum gain of 30.7 dBi at 27.2 GHz, which is only 1.1 dB lower than its theoretical limit. The maximum antenna efficiency is 61.5%. The 3-dB bandwidth of achieved gain ranges from 25.9 to 29 GHz, covering the fifth generation (5G) millimeter-wave bands. The proposed metalens remarkably enhances the radiation performance of the metalens antennas.

Time: 16:00-17:00 (Singapore Time) 15 August 2022 (Monday)

Venue: Online (Zoom). Click here to register.

Link of paper: https://ieeexplore.ieee.org/abstract/document/9445656