I need help with these transmission line questions. I cannot stress enough how i
ID: 1811583 • Letter: I
Question
I need help with these transmission line questions. I cannot stress enough how important it is that I get an explanation/work because just answers are useless to me. It's better I see how you came to the conclussion compared to just seeing the final answer.
Q:When designing a single stub matching network, the length of the shorted stub isselected to rotate the load admitance to the match circle. Why is this false?
Q: A transmission linewith characteristic impedance of 150 ohms is connected to a load impedance of 150 ohms. Which of the following is the most true and why?
a)The voltage reflection coefficient is equal to 1
b)The voltage reflection coefficient is equtl to infinity
c)The VSWR on the line is equal to 0
d)the VSWR on the line is equal to 1
Q:A line is 100m long with 2.6 loss in dB. The phasor form is V(x) = 10e^-(0.003+j3.6)x V. What is the length of the line in wavelengths?
Q:Assume the smith chart below is the normalized impedance. Which ofthe following describe an approach to modify the load impedance to reach point P3?
a)add a shunt resistor
b)add a series inductor
c)add a series capacitor
d)add a series resistor
Q:Which of the admittances on the smith chart (below) can be matched to the line by adding a shunt shortened stub?
Q: Which of the admittances from the same smith chart can be matched to the line by adding a shunt real admittance?
Explanation / Answer
1)b
VSWR = (ZL+Z0)/(ZL-Z0)