Analysis on the high frequency characteristics of the double-gap resonator

Starting from Maxwell’s equations for the fields, and using the matching conditions of electromagnetic fields, a cold dispersion equation and field solutions of an equivalent periodic structure pertaining to the double-gap resonator are derived. The dispersion equation and field solutions are employed to numerically calculate frequencies and field distributions, the effect of the resonant cavity size on frequency is discussed , and the theoretical basis for design of C-band double-gap output cavity is provided.