Chemistry

Materials science

Optoelectronics

Engineering

Circular polarization

Transverse magnetic

Telecommunications

Physics

Microstrip

Structural engineering

Optics

Quantum mechanics

Anisotropy

Birefringence

Polarization rotator

Computer science

Magnetic field

Linear polarization

Transverse plane

Bandwidth (computing)

Laser

Physical chemistry

Polarization (electrochemistry)

Scientific Reports

An ultrathin single-layer metasurface manifesting both linear cross-polarization conversion (CPC) and linear-to-circular polarization (LP-to-CP) conversion in X-band is presented in this research. The designed metasurface acts as a multifunctional metasurface achieving CPC over a fractional bandwidth of 31.6% (8–11 GHz) with more than 95% efficiency while linear-to-circular polarization conversion is realized over two frequency bands from 7.5–7.7 GHz and 11.5–11.9 GHz. Moreover, the overall optimized structure of the unit cell results in a stable polarization transformation against changes in the incidence angle up to 45° both for transverse-electric (TE) and transverse-magnetic (TM) polarizations. The proposed metasurface with simple structure, compact size, angular stability and multifunctional capability qualifies for many applications in communication and polarization manipulating devices.

Linear and circular-polarization conversion in X-band using anisotropic metasurface