Open AccessCompact patch antenna enabled by a metasurface with stereo elements
Author(s) -
Ximing Li,
Xiang Xi,
Xi Yang,
Pïng Chen,
RuiXin Wu
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.412315
Subject(s) - miniaturization , patch antenna , optics , microstrip antenna , computer science , antenna (radio) , bandwidth (computing) , materials science , physics , telecommunications , nanotechnology
We implemented a novel compact antenna by applying a metasurface with stereo elements (stereo-MS) as the superstrate of a patch antenna. The stereo-MS, an array of stereo patches printed on a grooved dielectric substrate, enabled the footprint miniaturization and bandwidth enhancement of the patch antenna. The overall size reduction of the stereo-MS antenna is over 38% compared with the conventional plane metasurface (plane-MS) antenna working in the same frequency range. A prototype antenna working at 5.3 GHz was designed, fabricated, and measured. Experiments demonstrated the fractional impedance bandwidth of the antenna was 44.5% at criteria |S 11 |< -10 dB, covering the frequencies 4.18 to 6.56 GHz, and the average gain about 6.9 dBi in the band. Experimental results were found in very good agreement with the design, which confirms the functionality of stereo-MS in antenna minimization. Our antenna features a compact size (0.409 λ 02) and low profile (3.024 mm). The stereo-MSs provide a new way for the size miniaturization of microwave and optical devices, such as antennas.