OBJECTIVE:
Plot the standing wave pattern, V(z) Vs length of the line using
MATLAB for given data Z0 =50 Ω, ZL=0, 25, 50, 75, 100 Ω and attenuation
constant α=0, 0.001, 0.002, 0.003,0.004, 0.005, 0.1 .The incident wave amplitude
=1 V and operating frequency f=10 GHz also length of the line=2λ.
THEORY:
Transmission line is a medium through which the EM wave travelling
from source to load, so to know the behavior of the EM travelling wave inside the
transmission line we have to analysis it but it is very difficult to analysis of an
infinitely long transmission line because the parameters are distributed through line
so we consider a small section ∆Z from an infinitely long transmission line in
figure given below
Now the solution of the travelling wave consist two parts one is forward and
reflected shown in the figure Pin is the incident power in the load and Pref is the
reflected power from the load. The travelling voltage and current wave can be
written as
V= V+*exp(-γZ) + V-*exp(γZ)
