Objective:

After completing this lesson you will be able to:Calculate differential impedance using a National Transmission Line Rapidesigner or by the use of equations. Also to be familiar with basic equations govering transmission lines.

Reading Assignment:

Transmission Line Applications Notes

1. AN-806 Data Transmission Lines and Their Characteristics, AN-807 Reflections: Computations and Waveforms, AN-808 Long Transmission Lines and Data Signal Quality    
2. AN-905 Transmission Line Rapidesigner Operation and Applications Guide

Research Assignment:

Using a National Transmission Line Rapidesigner (Lit #6332001-001 English Units) or from the equations listed in AN-905 Appendix - Calculate the Differential Impedance for a coupled pair of 68 Ohm microstrips spaced 12.5 mils apart on a 20 mils thick substrate. check answer

Program Coordinator/Professor

John Goldie
John Goldie is a graduate of San Francisco State University, holding a BS in Electrical Engineering with a minor in Design and Industry. John joined National in 1988 and has worked on LVDS, BLVDS, CML, ECL, GTL, BTL, RS-xxx and other interface technologies for data transmission and display applications. He has also authored over 30 articles and has chaired the TIA TR30.2.1 Electrical Standards committee, which authored LVDS and M-LVDS.

Quiz:

Take a quiz to check your understanding of this subject. Click here.
Answer all questions correctly to receive a certificate from Dean Bob Pease.