Title :
Coaxial resonator and measuring system for dielectric parameter measurements
Author :
Nagy, Lajos ; Szalay, Zoltán
Author_Institution :
Dept. of Broadband Infocommunications, BME, Budapest, Hungary
Abstract :
Our paper presents coaxial resonator based cheap measuring system for nondestructive dielectric parameter measurements. The system is based on ISM band RF transceivers controlled by PC using microcontroller and serial UART-USB interface. The article introduces the coaxial resonator which has a resonance frequency of 780MHz without load. As opposed to sensors based on VNA our system measures the scalar scattering parameter |S21| around this fixed frequency measured and the resonance frequency and the quality factor is considered to evaluate the complex dielectric constant of the measured sample. The simple and cheap measuring system makes this sensor system particularly interesting for moisture monitoring applications in industrial areas such as paper, foil and textile processing.
Keywords :
dielectric measurement; dielectric resonators; microcontrollers; nondestructive testing; permittivity; radio transceivers; ISM band RF transceivers; UART-USB interface; cheap measuring system; coaxial resonator; dielectric constant; nondestructive dielectric parameter measurements; quality factor; resonance frequency; scalar scattering parameter; Dielectric measurements; Frequency measurement; Frequency shift keying; Materials; Radio frequency; Resonant frequency; Transceivers; RF measurement; contactless; material parameter; resonator;
Conference_Titel :
Antennas and Propagation (EUCAP), 2012 6th European Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0918-0
Electronic_ISBN :
978-1-4577-0919-7
DOI :
10.1109/EuCAP.2012.6206255
