Checking Speed of EM Waves in Coaxial Lines with Pulse Function

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SUMMARY

The discussion emphasizes the superiority of using pulse functions over sawtooth functions for measuring the speed of electromagnetic waves in coaxial lines. It establishes that pulse functions provide clear, instantaneous edges, allowing for precise time comparisons. In contrast, sawtooth functions introduce ambiguity due to their slanted edges, complicating the timing analysis. The consensus is that ideal pulse functions eliminate dispersion effects, ensuring accurate measurements of wave speed.

PREREQUISITES
  • Understanding of electromagnetic wave propagation in coaxial cables
  • Familiarity with function generators and their signal types
  • Knowledge of signal edge detection techniques
  • Basic principles of signal dispersion and its effects
NEXT STEPS
  • Research the characteristics of pulse functions in signal processing
  • Explore the impact of dispersion on electromagnetic wave measurements
  • Learn about edge detection algorithms for signal analysis
  • Investigate the use of different signal types in function generators
USEFUL FOR

Electrical engineers, signal processing specialists, and researchers involved in electromagnetic wave measurement and analysis will benefit from this discussion.

newton1
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why we should use the pulse function in function generator when we need to check the speed of electromagnetic wave in coaxial line ??
why we can't use the other like sawtooth function??
 
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It is easier to compare the edges of pulse functions than to compare slanted edges. Assuming an ideal pulse, and no dispersion, the edges of the pulses will occur entirely at an exact instant in time. Using a signal with slanted edges, you would have to determine what part of the edge of the transmitted signal to compare to what part of the edge of the received signal.
 

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