Lossy Circular Waveguide

Application ID: 1418

In mode analysis it is usually the primary goal to find a propagation constant. This quantity is often, but not always, real valued; if the analysis involves some lossy part, such as a nonzero conductivity or an open boundary, the eigenvalue is complex. In such situations, the real and imaginary parts have separate interpretations:

  • The real part is the propagation constant
  • The imaginary part is the attenuation constant, measuring the damping in space

This tutorial shows how to set up a mode analysis with lossy metallic walls for a waveguide. The attenuation in dB per km is extracted for several modes.

This model example illustrates applications of this type that would nominally be built using the following products:

RF Module