f0 6[GHz] Frequency
er_sub 3.38 "Substrate permittivity"
er_eff (er_sub+1)/2+(er_sub-1)/2/sqrt(1+12*sub_t/line_w) "Effective substrate permittivity"
vph c_const/sqrt(er_eff) "Phase velocity"
T0 1/f0 "One period"
sub_l 15[mm] "Substrate length"
sub_w 15[mm] "Substrate width"
line_w 1.13[mm] "Line width"
sub_t 20[mil] "Substrate thickness"
sim_time_max sub_l/vph*2 "Maximum simulation time"
fmax 16/T0 "Maximum frequency component"
lmin vph/fmax "Wave length in substrate"
hmax lmin/5 "Maximum mesh size"
sim_time_step 0.2*hmax/vph "Simulation time step"