Determination of biconical cavity eigenfrequencies using fractional-rational approximation of its response obtained as solution of excitation problem

The solution of the excitation problem for the biconical cavity analysis by overlapping domain decomposition in combination with the collocation method has been examined. For determination of eigenfrequencies, the fractional-rational approximation of the cavity frequency response with its excitation has been used. Using the proposed approach the cone angle dependence of the eigenfrequencies of the azimuthal-symmetric oscillations of the biconical cavity has been obtained.