A MODIFIED FORMULA FOR MICROWAVE MEASUREMENT OF DIELECTRIC LOSS USING A CLOSED CYLINDRICAL CAVITY DIELECTRIC RESONATOR | Zendy

Liangzu Cao | Zendy; Cao Daming | Zendy

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A MODIFIED FORMULA FOR MICROWAVE MEASUREMENT OF DIELECTRIC LOSS USING A CLOSED CYLINDRICAL CAVITY DIELECTRIC RESONATOR

Author(s) -

Liangzu Cao,

Cao Daming

Publication year - 2014

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.245

H-Index - 33

ISSN - 1937-6480

DOI - 10.2528/pierl14071102

Subject(s) - microwave cavity , dielectric , resonator , microwave , materials science , dielectric resonator , resonant cavity , dielectric resonator antenna , dielectric loss , helical resonator , optoelectronics , optics , telecommunications , physics , computer science , laser

This paper provides a modified formula for calculating dielectric loss of dielectric resonator of working in TE01δ mode in closed cavity. The measurement system is divided into six regions. Based on analyzing the formula of loss tangent published in literatures, a quality factor of a substrate is created, and a modified formula is proposed. Validating the modified formula, with three substrates as supports, the frequencies and unloaded quality factors of dielectric resonators made of two sorts of dielectric materials with permittivity 38 and 75 respectively are measured using a closed cavity method. The measured results are compared with those obtained by other well-known formulas and show a good agreement with the result given by the parallel plate method.

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