Sale!

Laboratory 1: Waves On Transmission Lines

$30.00

5/5 - (3 votes)

ECE320H1F: Fields and Waves
Laboratory 1: Waves On Transmission Lines
Marking Scheme
Show your calculations for all work, including theoretical diagrams and plots. Measurement graphs
refer to intrumentation screen captures obtained in the laboratory. Include the full name, student
number and PRA session for all group members on the laboratory report.
3.2 [ 3 ] Sketch of the waveform at point C when the line is terminated in 𝑍0.
[ 2 ] 𝑍0 found using the variable load.
3.3 [ 5 ] 𝑍0 =
𝑣1(𝑡, 0)
𝑖1(𝑡, 0) calculated using Ohm’s law and measured voltages.
3.4 [ 5 ] Measurement 𝑣 vs 𝑡 graphs at C, D, E, and F for 𝑅L = 50 Ω.
[ 3 ] Recorded time delay ∆𝑡 at points D, E, and F relative to the input signal.
3.5 [ 2 ] Calculated average velocity of propagation 𝑣𝑎𝑣𝑔 and relative permittivity 𝜀𝑟.
[ 10 ] Theoretical bounce diagram (2 marks) and corresponding 𝑣 vs 𝑡 graphs at C, D, E, and
F (2 marks each). Compare with Section 3.4 measurement results.
3.6 [ 1 ] Compare calculated and measured ΓL.
[ 4 ] Measurement 𝑣 vs 𝑡 graphs at C and F for 𝑅L = 100 Ω.
[ 2 ] Discuss the relationship between the pulses at C and F.
[ 10 ] Theoretical 𝑣 vs 𝑑 graphs at 𝑡 = 𝑇 /2, 𝑇, 3 𝑇 /2, and 2 𝑇 where 𝑇 = pulsewidth.
[ 2 ] Discuss the pulse propagation along the line with a mismatch at the load.
3.7 [ 4 ] Measurement 𝑣 vs 𝑡 graphs at C and F for 𝑅source = (50 + 100) Ω and 𝑅L = 20 Ω for
pulse widths of 𝑇 and 10 𝑇.
[ 2 ] Calculated and measured ΓS and ΓL.
[ 20 ] Calculate the corresponding theoretical bounce diagram diagram for pulse widths of 𝑇
and 10 𝑇 (5 marks each) and plot the theoretical 𝑣 vs 𝑡 graphs for each case at C and F
(2.5 marks each).
[ 3 ] Discuss how the measured results compare to the theoretically calculated ones.
3.8 [ 3 ] Find three 𝑣1 minumum frequencies for the short circuit load.
[ 5 ] Explain why minimum voltages are obtained and discuss the effect on input current.
[ 3 ] Find three 𝑣1 minumum frequencies for the capacitive load.
[ 6 ] Discuss how and why the results for the short circuit and the capacitor are different.
[ 5 ] Presentation and neatness.
[ ] Indicates the number of marks out of 100 total marks

Scroll to Top