Figure 8
From: Analysis and design of ultra-wideband PRGW hybrid coupler using PEC/PMC waveguide model
(a) The geometrical configuration of the double-box hybrid coupler, (b) the specific boundary condition in CST Microwave Studio (c = 1.3, W1 = 1.02, W2 = 1.67, W3 = 1.62, Wr = 1.34, L1 = 1.12, L2 = 1.54, L3 = 2.62, L4 = 1, Lc = 2.46 (all in mm)).
