305_exam_1_s04

# 305_exam_1_s04 - (c Compute the loss in dB/m(d Compute L C...

This preview shows pages 1–8. Sign up to view the full content.

ECE 305 Name: Spring 2004 Exam #1 Student No. Note: Be sure to include units where appropriate! Note: YOU MUST SHOW YOUR WORK TO GET CREDIT! Note: Each problem is worth 8 points 1. Transient transmission lines. A battery is switched into a short-circuited transmission line through a series resistance, as shown below. a) Draw and label the voltage and current bounce diagrams, and use them to plot ) , 0 ( t v and ) , ( t i for 0 6 t T ≤ ≤ .

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
1 continued b) Find the steady-state current, ) , ( t i , t .
2. Transmission line parameters. A high-loss transmission line operating at 100 MHz has a characteristic impedance of 0 10 0 j Z + = Ω and a propagation constant of 10 5 j + = γ m -1 . (a) Compute the phase velocity. (b) Compute the wavelength.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (c) Compute the loss in dB/m. (d) Compute L, C, R, and G. 2 continued 3. Standing waves. A lossless transmission line with a characteristic resistance of 50 R = Ω is terminated by a load with impedance L Z . If the reflection coefficient is 4 . 1 . j + = Γ , a) Find S b) Find m d in wavelengths c) Find L Z 3 continued 4. Input impedance. A 2.5 cm long section of lossless transmission line of characteristic resistance 50 Ω is operated at 1 GHz and has a phase velocity 8 10 2 × m/s. a) Find the wavelength on the transmission line. b) Find the input impedance when the line is terminated with a load impedance of Ω + 50 100 j . 4 continued...
View Full Document

{[ snackBarMessage ]}

### Page1 / 8

305_exam_1_s04 - (c Compute the loss in dB/m(d Compute L C...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online