This work presents the analysis of the novel metallic nanowired membrane (MnM) substrate for designing antennas at the 60 GHz frequency band. The fabrication process of a rectangular patch antenna on the MnM-substrate is presented in detail. The antenna is fed through a modified microstrip line with slow-wave effect in order to reduce the feed line width. The fabrication is done in two phases, first the microstrip circuits are fabricated on a 50-µm-thick membrane; then it is assembled on a mechanical base to accommodate the two different substrate thicknesses used for the antenna and the slow-wave transmission line. The structure is simulated using a 3D EM software and the results indicate this substrate is a viable choice for antenna design, however gain increasing techniques must be used because of the high dielectric constant of the substrate.