ITEMS

modern scholarly publishers in the finest tradition

Journals

	Search

Telecommunications and Radio Engineering

ISSN for PRINT: 0040-2508

Institutional price:	$4518.00
Issues per year:	20

Best Paper Award Selection - Editorial Board Site

2001, Volume55

100 pages

Issue price - $197.00

Application of Quasi-Optical Dielectric Cavity Resonators for Measuring Microwave Characteristics of Dielectric and Conducting Materials

A. A. Barannik
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkov 61085, Ukraine

Yu.V. Prokopenko
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085, Ukraine

Yu. F. Filippov
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085, Ukraine

N. T. Cherpak
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkov 61085, Ukraine

ABSTRACT

Approaches are developed to studying microwave characteristics of dielectric and conducting materials with the use of quasi-optical dielectric resonators whose axis coincides with the anisotropy axis of the dielectric. The technique is based on the solving a characteristic set of equations that involve measured values of the resonator's eigen-frequencies, and identifying the eigenmodes observed in the resonator, as well as using measured magnitudes of the resonator Q-factor in the power relations derived. Examples are presented of implementating the approaches to determine components of the tensorial dielectric constant, [ε_ij], and the loss tangent, tan δ, of dielectric materials, and also to estimate the surface resistance, R_s, of conducting end plates of the cylindrical resonator. Spectral characteristics and power relations of the higher order HE_nsm modes are investigated for the radial in dices s = 1 and 2. The method suggested to analyze quasioptical resonators are of interest for studying dielectric materials and measuring the surface resistances, R_s, of conductors and superconductors at millimeter wavelengths.