Resonant Frequencies in an Electromagnetic Spherical Cavity with an Eccentric Inner Electrically Small Sphere
- 1 April 1992
- journal article
- research article
- Published by Taylor & Francis in Electromagnetics
- Vol. 12 (2) , 155-170
- https://doi.org/10.1080/02726349208908306
Abstract
Analytical expressions for the resonant frequencies in an electromagnetic spherical cavity with an eccentric inner electrically small sphere are derived, for both magnetic and electric nodes. The two spheres are perfectly conducting. Spherical vector wave functions and related addition theorems are used. Our results are useful in problems connected with excitation or probing of resonant cavities. Graphical results for some of the lower order modes are given for various values of the parameters and for both kinds of modes.Keywords
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- Resonance frequency shift of an acoustic chamber containing a rigid sphereThe Journal of the Acoustical Society of America, 1982
- Translational addition theorems for spherical vector wave functionsQuarterly of Applied Mathematics, 1962