![[Transmission_line_schematic.svg]]
To achieve maximum power transfer over a coax cable the the characteristic impedance ($Z_{0}$)  should be equal to the source ($Z_{S}$) and load ($Z_{L}$) impedance.

## Impedance Matching in Coax Cable
```circuitjs editable=false
$ 1 5e-12 1.5642631884188172 50 5 50 5e-11
171 112 192 512 192 0 1e-8 75 64 0
r 112 192 64 192 0 75
w 64 256 112 256 0
w 512 192 544 192 0
w 512 256 544 256 0
r 544 192 544 256 0 75
v 64 256 64 192 0 2 10000000 2.5 2.5 0 0.03
g 512 256 512 272 0 0
g 512 368 512 384 0 0
v 64 368 64 304 0 2 10000000 2.5 2.5 0 0.03
r 544 304 544 368 0 10000
w 512 368 544 368 0
w 512 304 544 304 0
w 64 368 112 368 0
r 112 304 64 304 0 75
171 112 304 512 304 0 1e-8 75 64 0
171 112 416 512 416 0 1e-8 75 64 0
r 112 416 64 416 0 75
w 64 480 112 480 0
w 512 416 544 416 0
w 512 480 544 480 0
r 544 416 544 480 0 10
v 64 480 64 416 0 2 10000000 2.5 2.5 0 0.03
g 512 480 512 496 0 0
g 512 592 512 608 0 0
v 64 592 64 528 0 2 10000000 2.5 2.5 0 0.03
r 544 528 544 592 0 10000
w 512 592 544 592 0
w 512 528 544 528 0
w 64 592 112 592 0
r 112 528 64 528 0 10
171 112 528 512 528 0 1e-8 75 64 0
x 221 200 381 203 4 24 input\s\q\q\soutput
x 230 314 390 317 4 24 input\s<<\soutput
x 236 426 382 429 4 24 input\s>\soutput
x 233 536 393 539 4 24 input\s<<\soutput
```