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Computation of resonant frequencies of cylindrical ferrite resonators using GIBCs

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2 Author(s)
Myung Jin Kong ; Dept. of Electr. & Comput. Eng., South Carolina Univ., Columbia, SC, USA ; B. Beker

A computational approach for resonant frequencies of cylindrical substrate-mounted resonators is presented in this paper. The resonator is made of ferrite material, which is magnetically anisotropic and characterized by a Hermitian tensor. It is mounted on top of a grounded dielectric substrate, and the entire assembly is covered with a tuning plate, leaving the sidewalls open. The generalized impedance boundary conditions (GIBCs) are derived for the ferrite material and are used to formulate the approximate solution to the boundary-value problem. The resulting transcendental equations are solved numerically, and variations of the resonant frequency with respect to bias field, magnetization, and dimensions of the structure are reported

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IEEE Transactions on Microwave Theory and Techniques  (Volume:46 ,  Issue: 10 )