transmission line help please

Discussion in 'Homework Help' started by kaznov, Mar 13, 2012.

  1. kaznov

    Thread Starter Member

    Mar 10, 2012
    Hi guys this might be a stupid question but i need a clarification please

    so when we have a transmission line terminated in a short circuit , basically we have the impadance of the load is zero since the voltage in a short citcuit is zero
    and we know that the input impedance Z(in) = j*Z0 tan beta*L
    so when L is zero which indicate i guess the input impedance at the load , Z(in) would be zero but wht id ont get is how when L = Pi/4 I have the input impedance equal to infinty even though tan of Pi/4 is one !!

    any help please
  2. Ron H

    AAC Fanatic!

    Apr 14, 2005
    You shouldn't guess. You can look stuff like this up.:)