Inverse Fourier Tranform of Transmission Lines Wave Equation

Click For Summary
SUMMARY

The discussion centers on the inverse Fourier transform of the expression e^(-jwx/u) as it pertains to the wave equation of transmission lines. The user seeks clarification on the application of Fourier transforms and Laplace transforms (where s = jw) to solve the partial differential equation (PDE) presented in the referenced lecture. The importance of clear notation and consistent variable definitions is emphasized to facilitate understanding and problem-solving.

PREREQUISITES
  • Understanding of Fourier transforms and their applications in solving PDEs.
  • Familiarity with Laplace transforms, specifically the relationship s = jw.
  • Knowledge of transmission line theory and wave equations.
  • Ability to interpret mathematical notation and functions in the context of physics.
NEXT STEPS
  • Study the derivation of the inverse Fourier transform in the context of wave equations.
  • Explore the application of Laplace transforms in solving differential equations.
  • Review transmission line theory, focusing on the mathematical modeling of wave propagation.
  • Practice writing and formatting mathematical expressions clearly for better communication.
USEFUL FOR

Students in electrical engineering, physicists working with wave equations, and anyone studying the mathematical techniques for solving transmission line problems.

NZBRU
Messages
19
Reaction score
0

Homework Statement


upload_2016-2-26_22-6-10.png

upload_2016-2-26_21-59-26.png

From the derivation of v(x,t) and i(x,t) I am stuck on how the inverse Fourier transform of e^(-jwx/u) was calculated. I am trying to understand how the PDE was fully solved here: http://fourier.eng.hmc.edu/e84/lectures/transmission_line/node1.html

Homework Equations


Not sure what rule to implement here, working using laplace transforms (s = jw) to perform Fourier transformations to avoid integration.
upload_2016-2-26_21-54-16.png


The Attempt at a Solution


upload_2016-2-26_22-6-10.png
 

Attachments

  • upload_2016-2-26_21-52-39.png
    upload_2016-2-26_21-52-39.png
    15.2 KB · Views: 467
Physics news on Phys.org
Your notation and writing are a mess. You have f as a function of x in some places, of t in other places, and x and t in yet other places. Why don't you start by clearly defining what the problem is and writing it out carefully.
 
And type it instead of posting an image.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 9 ·
Replies
9
Views
3K
Replies
1
Views
2K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K