FULL-WAVE SOLUTION FOR AN APERTURE-COUPLED PATCH FED BY PERPENDICULAR COPLANAR STRIPS

In recent years, the rectangular slot has been proposed as a means of power transfer between layers in multilayer printed antennas. Compared to probes, slots reduce fabrication complexity considerably, and allow more flexibility in the design of multilayer configurations. In the past, the aperture-coupled microstrip patch has been analyzed using the reciprocity theorem for the feeding line and the method of moments for the patch. The same method is used here for the analysis of an aperture-coupled patch fed by perpendicular coplanar strips. Theoretical results from this solution are compared with measurements for the, input impedance of this antenna, and design data are given for the characteristic impedance of the coplanar strip feed line.