a) For a transmission line, Find SWR and reflection coefficient R if, i. There is no reflected voltage. ii. Reflected voltage and incident voltage is equal. iii. If reflected voltage=20V and incident voltage=10V. iv. If reflected voltage=10V and incident voltage =20V.

a) For a transmission line, Find SWR and reflection coefficient R if, i. There is no reflected voltage. ii. Reflected voltage and incident voltage is equal. iii. If reflected voltage=20V and incident voltage=10V. iv. If reflected voltage=10V and incident voltage =20V.
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1 Answer

Answer :

reflection coefficient R=Vr/Vi

i. There is no reflected voltage.

i.e,Vr=0 R=0

SWR= 1+R/1-R=1

ii. Reflected voltage and incident voltage is equal.

Vr=Vi; R=1

SWR= 1+R/1-R=1+1/1-1=infinity

iii. If reflected voltage=20V and incident voltage=10V.

Vr=20 and Vi=10 R=20/10=2

SWR= 1+R/1-R= 1+2/1-2= -3

 iv)If reflected voltage=10V and incident voltage =20V.

Vr=10 and Vi=20 R=10/20=0.5

SWR= 1+R/1-R=1+.5/1-.5=3 
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