Edge-Fed, Planar Multilayer Substrate Model

Model a microstrip patch antenna using an edge feed and a planar multilayer substrate (Green’s functions). The patch antenna is solved with MoM.

Note: This example is for demonstration purposes only. For practical applications a feed line should be inserted to improve the impedance match.

To improve accuracy, the edge port length should be less than 1/30 of a wavelength. For this example, 1/30 of a wavelength relates to a maximum edge port length of 3 mm. As this example is only for demonstration purposes, an edge length of 4.5 mm is used instead.

Figure 1. A 3D view of the edge-fed microstrip patch antenna on an infinite ground with symmetry in CADFEKO.