Abstract
A miniaturized wideband metasurface antenna with ±45° dual-polarization is proposed. The metasurface (MTS) is comprised of an array of 3 × 3 square patches. A pair of coaxial probes feeds the corner-truncated patch underneath the MTS while keeping the floor intact; ensuring that less energy is radiated in the backward direction. To realize miniaturization of the MTS radiation element and maintain dual-polarized radiation performance, each square metal patch is loaded with a symmetrical quasi-fractal slot. By changing the current path of each patch, the resonant frequency of the MTS is decreased, and the electrical size is reduced. Characteristic mode analysis (CMA) is utilized to explain and analyze the miniaturization mechanism of the MTS. In order to prove the theoretical results, a prototype with the radiation element size of 0.39λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> × 0.39λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> (λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> is the wavelength in free space at the center operating frequency) is fabricated. The measured bandwidth is 18.6% (4.98–6.00 GHz) with | <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">S</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sub> | < −10 dB, | <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">S</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">12</sub> | < −16 dB, boresight gain of 6.12–7.45 dBi and front-to-back ratio better than 20 dB.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
