|In this work, a planar stacked patch array for Ku band fed by a fully corporate Substrate Integrated Waveguide network is proposed. Corporate topology prevents an unintended main beam steering effect that reduces the antenna bandwidth in progressive wave structures. Nevertheless, an increase in the spacing between radiating elements occurs, worsening the Side- Lobe Level figure. A reduction in such spacing implies closer discontinuities, namely bends and power dividers, and thus reflection coefficient is degraded. Therefore, a tradeoff solution is presented, where a measured Side-Lobe Level better that -11 dB and 4.1% reflection bandwidth are achieved, showing good agreement with the simulated results. A measured gain of 13.27 dBi is attained, corresponding to an 86% radiation efficiency.