A Double-Band Resonance Sensor for Complex Permittivity Characterization of Liquids
- Resource Type
- Conference
- Authors
- Du, M.; Li, S.; Shao, L.; Yuan, H.; Ma, J.; Si, L.; Sun, H.; Bao, X.; Zhang, M.; Bao, J.; Nauwelaers, B.
- Source
- 2023 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Microwave Biomedical Conference (IMBioC), 2023 IEEE MTT-S International. :181-183 Sep, 2023
- Subject
- Bioengineering
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Sensitivity
Liquids
Permittivity measurement
Simulation
Capacitors
Biomedical measurement
Sensors
Complex permittivity
microwave sensing
split-ring resonator
interdigital capacitor structure
- Language
A high sensitivity double-band resonance sensor based on a planar microstrip structure is proposed for complex permittivity measurements of liquids. Two split-ring resonators (SRRs) are combined with a microstrip line to expand the operating bandwidth. The sensor employs an array of interdigital capacitors (IDCs) to achieve higher sensitivity. Validation tests conducted on methanol-ethanol liquid mixtures reveal that the measurement accuracy of the new sensor meets the requirements.