Impedance matching using a Smith Chart

Discussion in 'Homework Help' started by stevy123, Apr 15, 2008.

  1. stevy123

    Thread Starter Active Member

    Nov 19, 2007
    Hi All

    Can anyone point me int he right direction how to go about impedance matching on a smith chart?

    I am trying to use an l match circuit.
    i am using 30 + j20 @1Ghz
    so firstly i normalise the values at 50 ohms
    so 30/50 = 0.6 and 20/50 = 0.4
    so now i plot 0.6 + 0.4J on the smith chart.
    (what circles do i read from to plot the 0.6 which is the impedance and the 0.4j which is the admitance.)

    how do i normalise this circuit? what formula do i need to use?
    Anyone any ideas.
    all help greatly appriciated.