Novel microwave microfluidic sensor using a microstrip split-ring resonator

Abduljabar, Ali Amin, Rowe, David J., Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 and Barrow, David A. 2014. Novel microwave microfluidic sensor using a microstrip split-ring resonator. IEEE Transactions on Microwave Theory and Techniques 62 (3) , pp. 679-688. 10.1109/TMTT.2014.2300066

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Abstract

In this paper, a new type of microwave microfluidic sensor is proposed to detect and determine the dielectric properties of common liquids. The technique is based on perturbation theory, in which the resonant frequency and quality factor of the microwave resonator depend on the dielectric properties of the resonator. A microstrip split-ring resonator with two gaps is adopted for the design of the sensors (i.e., a double split-ring resonator). This resonator is both compact and planar, making it suitable for a lab-on-a-chip approach. Several types of solvents are tested with two types of capillaries to verify sensor performance. At 3 GHz, very good agreement is demonstrated between simulated and measured results.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords:	Liquid dielectric sensor; Microfluidic sensor; Split-ring resonator.
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
ISSN:	0018-9480
Date of Acceptance:	20 December 2013
Last Modified:	25 Oct 2022 09:41
URI:	https://orca.cardiff.ac.uk/id/eprint/59605

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