ECE 391 - Transmission Lines
CRN 55962 - Spring 2017


Lecture:  M,W,F 1100-1150; LINC 302

Instructors:
  Roger Traylor
  Office: KEC3095
  E-mail:traylor@ece.NOSPAM.edu  (NOSPAM=orst)
  Office Hours: Wed 3-5pm

  Andreas Weisshaar
  Office: KEC3107
  E-mail:andreas@ece.NOSPAM.edu  (NOSPAM=orst)
  Office Hours: Wed 3-5pm





TAs:
  Mikkel Hansen
  Office: Kelly Atrium
  E-mail:hansemik@oregonstate.NOSPAM.edu  (remove NOSPAM)
  Office hours: Tu 11am-1pm, Fri 12-2pm


  Anindita Borah
  Office: Kelley Computer Lab
  E-mail:boraha@oregonstate.NOSPAM.edu  (remove NOSPAM)
  Office hours: Mon, Wed 4-6pm



Schedule and Assignments

Week

Dates

Topics

Homework



1

Apr 3,5,7

Motivation & Terms
   -What are we trying to do?
   -Definitions
   -Problems caused by T-line Phenomena
   -Special uses of T-lines
   -Examples of T-lines
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Traveling Waves
   -energy, velocity, linearity
Lumped vs. Distributed Circuits
   -Differentiating Lumped and Distributed Circuits
   -Phase Constant, Electrical length, vp
T-line or not - Digital World
   -Rise time versus flight time
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T-line or not - Analog World
   -Period versus flight time
   -Element size versus wavelength
T-line Parameters
   -Lossy and Lossless models
   -Telegraphers Equation
Development of Z0 and vp
   -Z0 and vp from physical models
   -Propagation velocity and Z0 of real T-lines

Optional reading: Inan and Inan 1.1, 1.2, 2.1, 2.2

Basic Realtionships
Solutions: 1 2 3 4 5 6
7 8 9 10 11 12 13 14 15 16 17

Stuff to Grok

2

Apr 10,12,14

Practial Considerations
   -Return Current Paths
   -Physical limits of practical T-lines
Wave Travel
Supplemental Notes #1
Infinite Length Lines
   -Incident Wave Amplitude
   -Time and Space Relationship
Finite Length Lines
   -Open Circuit Load
   -Short Circuit Load
   -Load Equal to Z0
-----
O-Scope and Sim of open, shorted, and Z0 terminated lines
simple.sp
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Reflections on Finite Length Lines
   -Impediance Discontinunities
   -Reflection Coefficient
Why Reflections Happen
Hardware Homework 3

Optional reading: Inan and Inan 2.3, 2.4, 2.4.1

Reflections
Solutions: 1 2 3 4 5 6 7 8 9 10

Stuff to Grok

3

Apr 17,19,21

Class canceled

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Class canceled
-----

Transmission line basics - review

Ngspice examples (Ngspice Example File)


Optional reading: Inan and Inan 2.4.2, 2.5

Reactive Loads
Solutions: 1(a-d) 2 3
Cascaded Lines
Solutions: 1 2 3 4 5 6

Stuff to Grok
ECE391 ngspice guide

4

Apr 24,26,28

Lattice Diagrams
Supplemental Notes #2
----

Four Rho cases
Inclass Problem

----

Reactive Terminations
Reactive Termination spice file


Optional study (not covered on exam):

Tline Neighborhood Models
Tline Neighborhood Decoupling
Tline Neighborhood - Corners
Tline Neighborhood - Vias
Tline Neighborhood - Termination Methods

Tline Neighborhood (not covered on exam)
Solutions: 1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 spice_files

BONUS PROBLEM SET #1

 


Stuff to Grok

5

May 1,3,5

Cascaded Lines
Supplemental Notes #3
----
Steady State Lines
Steady State Lines; λ/4 and λ/2 Behavior
(Steady State Line demo: λ/4, λ/2 Lines)
----
Steady State Analysis
T-Line Equations - Lossy Case
dB and Nepers

Midterm 1 Review

6

May 8,10,12

Midterm 1

----

Lossy T-Lines; Velocity and Dispersion
Lossy T-Lines; Practical Considerations

Supplemental Notes #6
----
Reflections on Terminated Lines
Standing wave patterns and SWR

Supplemental Notes #7
----
Finding Zmin, Zmax of Standing Waves
Zin of Open, Short, and Terminated Lines

Optional reading: Inan and Inan 3.1, 3.8

Quarter and Half Wave Behavior
Solutions: 1 2 3 4 5 6 7 8
Lossy Lines
Solutions: 1 2 3 4 5ab 5c 5d 5e 6 7


Stuff to Grok

7

May 15,17,19

Impedance Transformations
Supplemental Notes #9
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Midterm 2 Review
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Senior Expo (no class)

Reactive Lines
Solutions: 1

Standing Waves
Solutions: 1 2 3 4 5 6 7

8

May 22,24,26

Midterm 2
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Smith Chart Motivation
Smith Chart Intro
-----
Smith Chart Intro (cont.)
Supplemental Notes #10

Stuff to Grok (wk 7,8)

9

May 29,31,Jun 2

Memorial Day (no class)
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Smith Chart Intro (cont.)
Smith Chart Examples: #1 #2, #3, #4
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Supplemental Notes #11
Series Stub Matching

Smith Chart
1 2 3

Stuff to Grok

10

Jun 5,7,9, 17

Quarter Wave Matching
Shunt Stub Matching
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Shunt Stub Full Example
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Final Exam Review

prob0
prob1
prob2
prob3
prob4
old midterms

Finals Wk.

Monday
June 12, 12 noon
Location LINC 302