Abstract
This letter proposes a low-profile circularly polarized metasurface antenna with a wide axial-ratio beamwidth (ARBW). The proposed antenna consists of an array of square metallic metasurface cells that are excited by a microstrip line through four cross slots. The feeding structure can be seen as a symmetrical multiple-feed structure. Thus, ${E_\varphi }$ and ${E_\theta }$ can be nearly equal in amplitude with a phase difference of 90° over a wide angle range. A wide ARBW is obtained. With a size of 0.93 λL × 0.93 λL × 0.024 λL ( λL is the wavelength in free space at the lowest operating frequency), the proposed antenna achieves an impedance bandwidth of 17% and an AR bandwidth of 14.5%. Moreover, the ARBW is more than 205°.
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.
