f0 600[MHz] Frequency
er_sub 3.38 "Substrate permittivity"
er_eff (er_sub+1)/2+(er_sub-1)/2/sqrt(1+12*tsub/lwidth) "Effective substrate permittivity"
vph c_const/sqrt(er_eff) "Phase velocity"
Tb 1/f0/2 "One bit width"
drate 1/Tb "Data rate"
delay blength/vph "Travel time"
sim_time_max delay+Tb "Maximum simulation time"
pulse_w vph*Tb "Pulse width in substrate"
blength 6[inch] "Substrate length"
bwidth 1[inch] "Substrate width"
lwidth 1.13[mm] "Line width"
spacing 1.8[mm] "Distance between two lines"
tsub 20[mil] "Substrate thickness"
fmax 5[GHz] "Maximum pulse frequency component"
lmin vph/fmax "Wave length in substrate"
hm lmin/5 "Maximum mesh size"
sim_time_step "0.2 * hm/vph" "Simulation time step"