Ka-band SIW Slot Antenna Array with Low Sidelobe Level

An 8×14 slot antenna array is presented in this paper, aiming at achieving low sidelobe level using the so-called substrate integrated waveguide technique. The proposed antenna array contains 8 longitudinal slot sub-arrays, while each of them is composed of 14 radiating slots. An 8-way unequal power divider is used to achieve required magnitude distribution in E-plane. The radiating slots of the p...