Example of VSRC as voltage ports
* https://qucs-help.readthedocs.io/en/spice4qucs/RF.html fig. 13.2
*
*
V1 in 0 dc 0 ac 1 portnum 1 z0 50 ; pwr 0.001 freq 2.3e9

C1 in 0 318.3n
L1  in out 1.592m
C2 out 0 318.3n

V2 out 0 dc 0 ac 0 portnum 2 z0 50 ; pwr 0.002 freq 3.2e9

.sp dec 100 1 1e6 0

.control
run
display
set xbrushwidth=5
set xgridwidth=2
plot mag(S_1_1) mag(S_1_2) mag(S_2_1) mag(S_2_2)
plot S_1_1 smithgrid
plot S_1_2 polar
set hcopydevtype = svg
hardcopy plot_1.svg  S_1_2 polar
hardcopy plot_2.svg  S_1_1 smithgrid
* set colors, tested with MS Windows
set color0=white ; background
set color1=black ; circumference, reflection magnitue = 1
set color18=red ; grid for const resistance
set color19=blue ; grid for const reactance
set color4=darkgreen ; data 1
set color5=orange ; data 2
plot S_1_1 S_1_2 smithgrid
.endc

.end