5. Attenuation in rectangular waveguides
So far, we've assumed that the walls of the guide consist of perfect conductors, which is obviously an ideal case of lossless propagation. In fact, the existence of currents in walls of finite conductivity implies the dissipation of energy by the Joule effect and, consequently, lossy propagation. The attenuation coefficient is given by :
The power lost at a point on the guide walls is :
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Attenuation in rectangular waveguides
Standard and oversized rectangular guides
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