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A Scanned Perturbation Technique For Imaging Electromagnetic Standing Wave Patterns of Microwave Cavities

Authors
  • Gokirmak, Ali
  • Wu, Dong-Ho
  • Bridgewater, J. S. A.
  • Anlage, Steven M.
Type
Preprint
Publication Date
Jun 24, 1998
Submission Date
Jun 24, 1998
Identifiers
DOI: 10.1063/1.1149108
arXiv ID: chao-dyn/9806023
Source
arXiv
License
Unknown
External links

Abstract

We have developed a method to measure the electric field standing wave distributions in a microwave resonator using a scanned perturbation technique. Fast and reliable solutions to the Helmholtz equation (and to the Schrodinger equation for two dimensional systems) with arbitrarily-shaped boundaries are obtained. We use a pin perturbation to image primarily the microwave electric field amplitude, and we demonstrate the ability to image broken time-reversal symmetry standing wave patterns produced with a magnetized ferrite in the cavity. The whole cavity, including areas very close to the walls, can be imaged using this technique with high spatial resolution over a broad range of frequencies.

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