6533b825fe1ef96bd1282065

RESEARCH PRODUCT

A new empirical method for extracting unloaded resonant frequencies from microwave resonant cavities

E. De Los ReyesJose-manuel Catala-civeraFelipe L. Peñaranda-foixAntoni J. CanosJ. Monzo-cabrera

subject

Electromagnetic fieldCouplingResonatorMaterials scienceAcousticsElectronic engineeringResonanceEquivalent circuitCoupling coefficient of resonatorsMicrowaveMicrowave cavity

description

Equivalent circuits traditionally used to model resonators and coupling networks in the vicinity of a resonance provide values of unloaded resonant frequencies which usually do not agree with experimental results. A new empirical method for the extraction of influence of coupling networks on resonant cavities is presented. The characterization of coupling structures is performed directly from measurements without the need of obtaining the electromagnetic fields inside the cavity, which is very interesting from a practical point of view. Results are validated with simulations and experimental measurements. The accuracy of some cavity applications, such as dielectric characterization techniques can be directly improved with this approach.

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