Ku-band antenna array element based on Fabry-Perot cavity

The results of simulation and experimental study of the Ku-band antenna array element based on Fabry-Perot cavity (FPC) are presented in the article. The FPC is implemented as double-layered subwavelength FSS acting as partially reflecting surface (PRS). The matching element in form of a dielectric pyramid is presented. The reflection coefficient of fabricated prototype is below -10 dB within the operating frequency band. The gain of the prototype exceeds 18.7 dBi within a range of 12-12.7 GHz. The frequency band at -3 dB from maximum gain level is 9%. The presented array element can be used in high efficient arrays for satellite communications and television.