3D Printed Slotted Waveguide Array Antenna for D-Band Applications

This work presents an additively manufactured 12 elements slotted waveguide array antenna for D-Band applications incorporating a Dolph-Chebyshev taper for side lobe suppression. The specimen is printed by digital light processing from UV-curable photopolymer resin and is subsequently metal coated using an electroless silver plating process. A bandwidth B
_10
dB
of about 19 GHz is achieved with a center frequency of 140 GHz with a realized side lobe level of 17 dB, hence, highlighting the prospects of additive manufacturing towards D-Band frequency range and future automotive radar sensors.