Figure 2. The simulated filed patterns and distributions for the straight waveguide structure.

(a,b) are the corresponding electric field patterns for the cases of inserting the dielectric material and PEC into the middle of GIMs, respectively. (c) is the electric field distribution from x = −200 mm to x = 200 mm (y = 0 mm) in (b). (a), (b,c) are the cases for the incident wave with TE₁ mode. (d,e) are the corresponding magnetic field patterns for the cases of inserting the dielectric material and PEC into the middle of GIMs, respectively. (f) is the magnetic field distribution from x = −200 mm to x = 200 mm (y = 0 mm) in (e). (d), (e,f) are the cases for the incident wave with TM₀ mode.