Match 2 different Zo T-lines with 1/4 wave matching *load is completely resistive *transmitter with 100 ohm output at 29.6Mhz Vin vin 0 ac 1.0 sin(0 1.0 29.6e6) rsrc vin t1_in 50 *arbitrarily long T-line (about 21 meters) t1 t1_in gnd t1_out gnd z0=50 F=29.6Meg NL=3.0 *quarter wave matching coax section t2 t1_out gnd t2_out gnd z0=61.24 F=29.6Meg NL=.25 *arbitrarily long T-line (about 21 meters) t4 t2_out gnd t3_out gnd z0=75 F=29.6Meg NL=3.0 rload t3_out 0 75 .control set hcopydevtype=postscript * set hcopydev=kec3112-clr set hcopypscolor=true set color0=rgb:f/f/f set color1=rgb:0/0/0 ac lin 100 10M 50Meg *plot I and V at input to T-line plot vm(vin,t1_in) vm(t1_in) *plot T-line input impedance directly plot (vm(t1_in))/((vm(vin,t1_in))/50) ;cleaner math *hardcopy temp.ps vm(vin) vm(vin,t1_in) vm(join_in) .endc .end