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Resonant Cavity Bandwidth

September 3rd Fact-of-the-Day

The relative bandwidth of an RF cavity at resonance is approximately equal to the inner-surface-area times the effective skin-depth (i.e., the volume where energy losses occur) divided by the total volume of the cavity (i.e., the volume where energy is stored). Consequently, for a given skin-depth, narrowest bandwidths are obtained with a spherical shape. ©2004 Martek, International. All rights reserved.

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