Title :
The analysis of a balanced-type circular disk resonator excited by coaxial cable lines to measure the complex permittivity
Author :
Kawabata, Hirokazu ; Kobayashi, Yoshio
Author_Institution :
Fac. of Eng., Saitama Univ., Japan
Abstract :
A new structure of a balanced-type circular disk resonator is proposed to determine the relative permittivity εr and the loss tangent tanδ of dielectric plate samples from the measured values of f0 and the unloaded Q of the TM010 mode. A rigorous analysis based on the Ritz-Galerkin method is preformed to obtain the resonant frequency f0 and the Q factors of the TM0m0 mode. The numerical results are presented to illustrate the effects of the coupling holes, through which the resonator is excited and detected, on f0 and the Q values. The analysis method is used to calculate the values of the εr and tanδ of PTFE plate samples from the measured values
Keywords :
Galerkin method; Q-factor; coaxial cables; dielectric loss measurement; microwave measurement; permittivity measurement; resonators; PTFE; Q-factor; Ritz-Galerkin method; TM mode; balanced-type circular disk resonator; coaxial cable line; complex permittivity; dielectric plate; loss tangent; microwave measurement; resonant frequency; Coaxial cables; Dielectric loss measurement; Dielectric losses; Dielectric measurements; Integral equations; Loss measurement; Permittivity measurement; Q measurement; Region 2; Resonant frequency;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985379
