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Acta Armamentarii ›› 2018, Vol. 39 ›› Issue (8): 1607-1611.doi: 10.3969/j.issn.1000-1093.2018.08.018

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A Perturbation-theory-based Analytical Method for the Dual-mode Dielectric Resonator Measuring the Dielectric Properties

YUAN Cheng-wei1, CHEN Ming2, LUO Wei-feng2, ZHANG Qiang1   

  1. (1.College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,Hunan,China;2.Hunan Vanguard Group Co., Ltd,Huaihua 419503,Hunan,China)
  • Received:2017-11-15 Revised:2017-11-15 Online:2018-09-21

Abstract: A simple analysis method based on cavity perturbations theory is proposed to reduce the data processing complexity of using the dual-mode dielectric resonator to measure the dielectric properties of medium. The positioning steps in the resonator are considered as a perturbation structure. The cavity structure perturbation theory and material perturbation theory are used to obtain an approximate calculation method. Dielectric constants and loss tangents of several samples are analyzed and compared with the results obtained by mode matching method. The maximum relative deviations of calculated dielectric constants and loss tangents obtained by the two methods are less than 0.5% and about 5%, respectively. Key

Key words: dielectricresonator, dielectricconstant, dielectricloss, perturbationtheory

CLC Number: