Wideband Low-Profile Aperture Antenna for 5G-applications Comprising of a Slotted Waveguide Array and an Integrated Corporate Feed

This paper presents a design of a low-profile high gain aperture array antenna for 5G-Network communication applications (Ka-band). The antenna is comprised of a slotted waveguide array with an integrated wideband feed, and its low-profile makes it a good candidate as a replacement of a reflector, a flat lens or a reflectarray. The array is designed by using a waveguide antenna with 10 slots and a single feed. The waveguide antenna is proposed as a unit element of the aperture array. The prototype of a 4x10 waveguide array antenna has been simulated by using the EM solver "HESS". The array is excited by using a wideband 4:1 power divider. The aperture array achieves an impedance bandwidth of 70.75% by using matching networks, a low side lobe level and a high gain at an operating frequency of 30 GHz, which is further enhanced by using a dielectric superstrate layer.