A Miniaturized Stop-Band Frequency Selective Surface Based on Sub-wavelength Slow-Wave Dipole

This work introduces a novel band-stop frequency selective surface (FSS) based on slow-wave dipoles. By controlling the dispersion of the slow-wave structure, the working frequency of the FSS could be controlled within 3 to 5 GHz without altering the dipole length. Beneficial from the slow-wave property, this design could reduce 18% length of the traditional rectangular dipole unit cell and eliminate the grating lobe effect.