A 50 ohmns lossless air transmission line is terminated in a load impedance ZL = 12.5 + j20 ohnms
Find the following using a Smith Chart:
i) the load admittance YL.
ii) the closest distance to the load plane where the normalized admittance on the line is 1 + jbN.
iii) the length of a short-circuited stub of characteristic impedance Z (OS) =100 ohmns which, upon placement in shunt with the line at the 1 + jbn admittance point, produces impedance matching on the line so that there exists no reflected wave to the left of the short-circuit placement plane.