Higher Order Reentrant Post Modes in Cylindrical Cavities

Abstract

Reentrant cavities are microwave resonant devices employed in a number of different areas of physics. They are appealing due to their simple frequency tuning mechanism, which offers large tuning ranges. Reentrant cavities are, in essence, 3D lumped LC circuits consisting of a conducting central post embedded in a resonant cavity. The lowest order reentrant mode (which transforms from the $T{M}_{010}$ mode) has been extensively studied in past publications. In this work we show the existence of higher order reentrant post modes (which transform from the $T{M}_{01n}$ mode family). We characterize these new modes in terms of their frequency tuning, filling factors and quality factors, as well as discuss some possible applications of these modes in fundamental physics tests. The appendix contains a comment on a paper related to this work.

8 pages, 11 figures. V2: As published in Journal of Applied Physics. V3: Typographical corrections. V4: New Appendix added

References in corpus (4)

• Cavity design for high-frequency axion dark matter detectors
• 3D Lumped LC Resonators as Low Mass Axion Haloscopes
• The 3D Split-Ring Cavity Lattice: A New Metastructure for Engineering Arrays of Coupled Microwave Harmonic Oscillators
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• Low Frequency (100-600 MHz) Searches with Axion Cavity Haloscopes
• Comment on "Higher order reentrant post modes in cylindrical cavities" [ J. App. Phys. 122, 144501 (2017) ]
• Experimental Implementation of a Large Scale Multipost Re-Entrant Array
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