Finite-Width Coplanar-Waveguide Patch Antenna

The upper part of Figure 1 illustrates an antenna derived by widening the middle strip conductor of a finite-width coplanar waveguide (FCPW) to form a rectangular patch. An FCPW offers all the advantages of a conventional coplanar waveguide, along with the additional advantage that its finite-width ground planes suppress the propagation of spurious substrate electromagnetic modes that would otherwise degrade the electrical performance of an array of patch antenna elements.