Novel coupling structure for the resonant coaxial probe

Rowe, David James, Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883, Barrow, David Anthony ORCID: https://orcid.org/0000-0003-2096-7262 and Allender, Christopher John 2012. Novel coupling structure for the resonant coaxial probe. IEEE Transactions on Microwave Theory and Techniques 60 (6) , pp. 1699-1708. 10.1109/TMTT.2012.2189124

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Abstract

Herein we present a technique for performing complex permittivity measurements with an overmoded, evanescently perturbed coaxial resonator at microwave frequencies. The design of a noninvasive electromagnetic coupling structure, which allows transmission measurements to be taken from one end of a resonant section of coaxial cable, is discussed in detail. Quasi-spectral information was obtained through the exploitation of higher order resonances, and complex permittivity measurements of a number of common industrial solvents were taken at multiple discrete frequencies between 1 and 8 GHz. A combination of experimental and simulated results was used also to characterise the device behavior. The high stability of temporal measurements, coupled with the robustness of the design, make this device ideal for analytical chemistry and industrial process control.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering Pharmacy
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords:	Dielectric measurements, microfluidics, microwave sensors
Publisher:	IEEE
ISSN:	0018-9480
Last Modified:	21 Oct 2022 09:31
URI:	https://orca.cardiff.ac.uk/id/eprint/36740

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