Abstract
This article presents a metasurface (MTS) for designing a circular polarized (CP) flat-top radiation pattern using the phase compensation method. The basic idea is to generate multiple beams pointing in different directions by dividing the entire MTS into sub-regions. The MTS consists of four-layered elliptical patches encircled in a square loop printed on three dielectric substrates. The asymmetric nature of the unitcell produces two orthogonal components with equal magnitude and 90° phase difference to obtain the required linear to circular polarization conversion. The proposed MTS consists of 15 × 15 unitcells, and is fed by a rectangular patch antenna operating at 10 GHz. The flat-top pattern has been observed in the 3-D plane for u,v-polarized wave incidences at 9.9 GHz. For u-polarized incidence wave results in left-hand circular polarized (LHCP) flat-top radiation pattern with a 1 dB beamwidth of 37.5°. The axial ratio is less than 3 dB in all planes within the 1-dB beamwidth at 9.9 GHz. Similarly, for v-polarized incident wave, identical characteristics have been observed for right-hand circular polarization (RHCP), which enables the proposed structure for polarization diversity.
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 callMore From: International Journal of RF and Microwave Computer-Aided Engineering
Disclaimer: 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.
