Analysis of a Substrate Integrated Waveguide Hybrid Ring (Rat-Race) Coupler

Figure 5

Agreement cases for in-phase responses with 1D FSV tool: (a) ADMi and FDMi, (b) ADMc and FDMc, (c) GDMi and GDMc, and (d) GRADE/SPREAD chart.

(a)

(b)

(c)

(d)