B. Sauviac et al., RIGOROUS ANALYSIS OF SHIELDED CYLINDRICAL DIELECTRIC RESONATORS BY DYADIC GREEN-FUNCTIONS, IEEE transactions on microwave theory and techniques, 42(8), 1994, pp. 1484-1493
This paper presents a rigorous approach for the calculation of resonan
t frequencies of a metallic cavity loaded by a dielectric resonator. T
angential fields at the air-dielectric interface are derived from dyad
ic Green's functions and boundary conditions are applied. Dyadic Green
's identity and the boundary element method are used to solve the nume
rical problem. In order to validate the method, resonant frequencies a
re calculated for a cylindrical cavity loaded with a dielectric cylind
er and compared with available results in the literature. Then resonan
ce is studied for dielectric cylinder in a rectangular cavity. In the
case of multiple dielectric resonators in the cavity, the coupling coe
fficient is computed with an original method based on the use of symme
tries.