1. The problem statement, all variables and given/known data (a) Find the capacitance per unit length and find the inductance per unit length of a transmission wire above a infinite conducting plane. I used the image method (b) Show that EM waves can propagate, and find their speed and the characteristic impedance of the line. (c) Find the characteristic impedance for no reflected power? (d) The frequency of incoming wave multiplied by 4, find fraction reﬂected power and the phase diﬀerence between the incident and reﬂected waves. 2. Relevant equations 3. The attempt at a solution Part (a) Part (b) and (c) I got an imaginary value for the impedance, not sure if it's right. It implies there is a ∏/2 phase difference between voltage and current? Part (d) For part (d), I'm not sure why there would be a phase difference? If it is a short circuit, then there would be a phase change of ∏ (Vr/Vi = -1) if it is an open circuit then it would be completely reflected. What has ramping up the input frequency got to do with the phase difference between incoming and reflected wave?