Author : Mrs.D.M.Dharmadhikari 1
Date of Publication :7th December 2016
Abstract: The co-axial stub resonator is a transmission line which can be used to detect fluid properties. For different inline process sensing applications, in the field of water quality detection, research has been done to provide an adequate theoretical description of transmission line based measurements This work described here gives details of use of coaxial stub resonator to measure the dielectric properties of fluids. . This radio frequency spectroscopy method is based on coaxial stub technique and comprises quarter wave length open ended resonators filled with a liquid sample as dielectric material between inner and outer conductor. The change in the dielectric properties of the liquid sample results in change resonance frequency and quality factor.
Reference :
-
- A Redhardt, H.J.Steinhoff, J.Schlitter, H.J.Neumann and G.Hess. Institute for Biophysik der Ruhr-Universitat Bochum. Z.Naturforsch.44a,75-80(1989); received October 12,1988.
- Y. Wang and M. N. Afsar, Measurement of complex permittivity of liquids using waveguide techniques, Progress in Electromagnetic Research, Vol. 42, 131−142, 2003.
- M.S. Venkatesh, G.S.V. Raghavan, An Overview of Dielectric Properties Measuring Techniques, Canadian Biosystems Engineering, Volume 47, 2005,15−7.30.
- J. Sheen, Study of microwave dielectric properties measurements by various resonance techniques, Measurement, Volume 37, Issue 2, March 2005, 123−130.
- Y.−H. Chou, M.−J. Jeng, Y.−H. Lee, and Y.−G. Jan, Measurement of RF PCB Dielectric Properties and Losses, Progress In Electromagnetic Research Letters, Vol. 4, 2008, 139−148.
- Extensive Modeling of a Coaxial Stub Resonator for Online Fingerprinting of Fluids N.A. Hoog-Antonyuka,ca*, W. Olthuisa, M.J.J. Mayerb, H. Miedemac, F.B.J. Leferinkd, A. van der Geag
- D. M. Pozar, Microwave Engineering, Wiley, 2004
- S.O.Pillai,Sivakami, A Text book of Engineering Physics-New Age International Publisher.
- Dielectric properties of simulated green coconut water from 500 to 3,000 MHZ at temperature from 10 TO 80 ºC - Arlet P. Franco; Carmen C. Tadini; Jorge A. W. Gut University of São Paulo/NAPAN - Food and Nutrition Research Center, Brazil
- Online water quality monitoring in the distribution network F. Williamson1, J. van den Broeke1, T. Koster1, M. Klein Koerkamp1, J.W. Verhoef1, J. Hoogterp2, E. Trietsch2 and B.R. de Graaf2
- M. V. Storey, B. van der Gaag, B. P. Burns, Advances in on−line drinking water quality monitoring and early warning systems Water Research, Volume 45, Issue 2, January 2011, 741−747.