Accuracy enhancement of a split-ring resonator liquid sensor using dielectric resonator coupling

Publikationstyp
Conference Paper
Date Issued
2014-06
Sprache
English
Author(s)
Meyne, Nora  
Cammin, Christoph  
Jacob, Arne F.  
Institut
Hochfrequenztechnik E-3  
TORE-URI
http://hdl.handle.net/11420/8352
Start Page
255
End Page
258
Article Number
6899869
Citation
20th International Conference on Microwaves, Radar and Wireless Communications (MIKON 2014)
Contribution to Conference
20th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2014  
Publisher DOI
10.1109/MIKON.2014.6899869
Scopus ID
2-s2.0-84908626291
Two planar resonant sensors for biomedical applications are compared with respect to their functionality when measuring high-loss materials. One sensor is a split-ring resonator. Liquid samples are placed at the gap where the conductor is shaped into tips. When sensing high-loss materials such as water this sensor type has a very low quality factor and therefore the evaluation of the resonance becomes inaccurate. To improve the quality factor, the second sensor uses a dielectric resonator as coupling element between the feed line and the split-ring resonator. Both sensors are tested on water and saline solutions. It is shown that the dielectric resonator drastically improves the quality factor of the sensing design and therefore enhances the accuracy of the sensor with respect to material characterization.
Subjects
biomedical materials
materials testing
Microwave sensors
nondestructive testing