ECE 3105程序代做、代写Java，Python编程语言-代写Java编程

ECE 3105 HW 1 Due: 05/27/2021

1. The attenuation coefficient, phase constant, and characteristic impedance of a transmission

line are: 0 ? ? ? ? ?? 1 Np / m, 2 rad / m, and Z 40 . Assuming that 6 ? ?10 rad / sec ,

determine the transmission line parameters R, L, C, and G .

2. Using the T model of transmission line, derive the governing equation for the voltage and

current:? ?

3. A 75-ohm resistive load is preceded by a ?/4 Section of a 50-ohm lossless line, which itself

is preceded by another?/4 Section of a 100-ohm lossless line. What is the input impedance?

4. A lossless transmission line with a characteristic impedance of50 ? is terminated in a short

circuit ( 0 L Z ? ). Determine,

(a) the input impedance at a distance 2.8? from the load,

(b) the distance from the load at which the input impedance is j25 ?.

5. A lossless transmission line with characteristic impedance Z 50 0 ? ? and phase velocity

8 v 3 10 m / sec p

? ? is powered by a voltage generator with 9 vt t g ( ) 5cos(2 10 ) V ? ? ? and

internal impedanceZ 50 . g ? ? Assuming that the line length is 5 cm and the load impedance

is Z 100 100 L ?? ? j , determine (a) reflection coefficient at the load, (b) input impedance at

the input of the line, and (c) the voltage and current phasors at the input of the line.