High Gain Filtering Lens Antenna

Abstract

In this paper, a Ka-band high gain filtering antenna (Filtenna) based on distributed coupled-resonators and 3Dprinted dielectric lens is investigated. The substrate integrated cavity (SIC) coupled-resonators and cavity-backed patch antennas are effectively employed to form a 2$\times$2-array Filtenna loaded by a dielectric lens. The proposed lens Filtenna with fourth-degree Chebyshev filtering response centered at 31 GHz, bandwidth of 2 GHz, return loss of15 dB and realized gain of17 dBi is designed, simulated and fabricated. The simulation and measurement results of the compact low-cost 3D-printed dielectric lens Filtenna are in good agreement which verify the validity and uniqueness of the proposed solution for 5G and mm-wave applications.