Low cross polarized AFTSA-SC H-plane array architecture for MMW applications

This paper presents a high gain, and low cross polarized four element sine shaped antipodal Fermi tapered slot antenna (AFTSA-SC) based on H-plane array architecture that operates at 57-64 GHz for applications in millimeter wave systems. The proposed antenna consists of circular slots and sine-shaped corrugation to enhance the radiation characteristics of the antenna. This antenna is analyzed in H-plane array architecture comparing conventional and mirrored array structures. The performance of the 1 × 4 AFTSA-SC array is investigated not only for lower cross-polarization, but also regarding achieving high gain, better radiation characteristics, and low side lobe level. The proposed mirrored H-Plane array structure exhibits a gain of 20 in addition to good cross-polarization, which is less than -40 dB in both the E- and H-planes at 60 GHz.