A hybrid of microwave circuit theory and BEM to analyze irregular coaxial resonators

La-Min Zhan, Tian-Lin Dong


A field circuit model of the structure of the irregular coaxial resonator (ICR) based on microwave circuit theory is presented. All its circuit parameters are determined by the boundary-element method (BEM). Through this method, a complex three-dimensional electromagnetic problem is converted into two-dimensional electromagnetic and equivalent microwave circuit problems. Numerical results show good accuracy fit for engineering application. The procedure is general and can be used to analyze arbitrary irregular coaxial cavities also.


Coaxial resonators; microwave equivalent circuit; boundary-element method

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