Approximating functions for computation of resonant wavelengths of the reentrant cavity resonator with extended capacitance gap

Комаров, В. Н.

doi:10.1002/mmce.20672

Cited by 1 publication

(1 citation statement)

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“…Nevertheless, throughout all this research there is a lack of understanding of rigorous analysis on the mode structure as the position of the post inside the cavity widely varies to the regime where the approximations no longer hold. For example, lumped element models are only valid under certain approximations [39][40][41][42][43]. In this paper we undertake rigorous analysis using the Finite Element Method (FEM) and compare with the lumped element model and experimental results.…”

Section: Introductionmentioning

confidence: 99%

Rigorous analysis of highly tunable cylindrical transverse magnetic mode re-entrant cavities

Floch

Fan

Aubourg

et al. 2013

Review of Scientific Instruments

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Cylindrical re-entrant cavities are unique three-dimensional structures that resonate with their electric and magnetic fields in separate parts of the cavity. To further understand these devices, we undertake rigorous analysis of the properties of the resonance using "in-house" developed Finite Element Method (FEM) software capable of dealing with small gap structures of extreme aspect ratio. Comparisons between the FEM method and experiments are consistent and we illustrate where predictions using established lumped element models work well and where they are limited. With the aid of the modeling we design a highly tunable cavity that can be tuned from 2 GHz to 22 GHz just by inserting a post into a fixed dimensioned cylindrical cavity. We show this is possible, as the mode structure transforms from a re-entrant mode during the tuning process to a standard cylindrical transverse magnetic mode.

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Section: Introductionmentioning

confidence: 99%