Title :
Resonant frequencies and Q factors of dielectric parallelepipeds
Author :
Trueman, C.W. ; Mishra, S.R. ; Larose, C.L. ; Mongia, R.K.
Author_Institution :
Concordia Univ., Montreal, Que., Canada
fDate :
4/1/1995 12:00:00 AM
Abstract :
This paper describes the measurement and computation of the resonant frequencies and the associated Q factors of low-loss ceramic parallelepipeds with relative permittivity 37.84 and 79.46. Each sharp resonance peak is measured separately with a fine frequency step. The calculation uses FDTD to compute the initial portion of the backscattered field as a function of time, due to a Gaussian pulse plane wave. The transient response is extended in time to zero value by Prony´s method, The measured and computed resonant frequencies and Q factors are presented for two parallelepiped orientations and are in good agreement
Keywords :
Q-factor measurement; dielectric resonators; finite difference time-domain analysis; microwave measurement; radar cross-sections; Gaussian pulse plane wave; Prony´s method; Q factors; backscattered field; dielectric parallelepipeds; fine frequency step; low-loss ceramic parallelepipeds; parallelepiped orientations; relative permittivity; resonant frequencies; sharp resonance peak; transient response; Ceramics; Concurrent computing; Dielectric measurements; Finite difference methods; Frequency measurement; Permittivity measurement; Q factor; Q measurement; Resonance; Resonant frequency;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
