A circularly polarized, high aperture efficiency metasurface antenna

Abstract

A circularly polarized, high aperture efficiency antenna based on metasurface (MTS), inexpensively fabricated using a standard printed circuit board (PCB) technology, is presented. An array of 8 8 cross‐shaped resonators was designed to operate at 3.1 GHz with a 12 cm 12 cm (i.e., 1.24 1.24 ) footprint size. Each resonator was double fed (by two lines) with appropriate phases to achieve circular polarization. Full characterization of the designed antenna was achieved using full‐wave simulations. The MTS antenna was fabricated using a multilayer PCB technology and experimentally tested. A good agreement between the simulation results and measurements was observed. According to the measurements, with a realized gain of 11.1 dBi, the antenna has an aperture efficiency of 66.7%, which is high compared to many other antennas.

A Beam-Split Metasurface Antenna for 5G Applications

“…Meanwhile, the with superstrate metasurface configuration for increasing the gain has a radiation efficiency of 84%, 3 dB beam width is 77.5 • , and the main lobe is directed normalize towards 0 • with a side lobe level −14.9 dB at the resonant frequency. Besides, compared to other proposed antennas provided in [39]- [42], it has acceptable radiation efficiency, bandwidth, and gain. Furthermore, the radiation efficiency is more than 82% of MPA with superstrate metasurface configuration for splitting the beam, 3 dB beam width is 52.7 • , and a side lobe level of −11 dB at the resonant frequency.…”

Miniaturized Broadband Bi-Yagi Antenna Array for Ambient RF Energy Harvesting

“…To overcome this challenge, only the center cell/supercell is utilized for power harvesting while treating the other cells as parasitic [28,29]. Furthermore, investigations have been conducted on the use of one-port or two-port metasurfaces in electromagnetic energy harvesting, studying their performance in both transmitting and receiving scenarios [23,[30][31][32]. However, the large size and limited bandwidth of such structures make this category less effective for some IoT applications.…”