AI Article Synopsis
- This paper proposes a new analytical method to measure the complex dielectric constant of liquids using a microstrip line and a complementary split ring resonator (CSRR).
- The technique relies on the transmission coefficient measurements from the CSRR, which must be surrounded by the liquid under test and have sufficient liquid depth for accurate results.
- A key benefit of this method is that it does not require reference samples for calibration, demonstrated through tests with olive and castor oil.
Article Abstract
In this paper, an analytical method to estimate the complex dielectric constant of liquids is presented. The method is based on the measurement of the transmission coefficient in an embedded microstrip line loaded with a complementary split ring resonator (CSRR), which is etched in the ground plane. From this response, the dielectric constant and loss tangent of the liquid under test (LUT) can be extracted, provided that the CSRR is surrounded by such LUT, and the liquid level extends beyond the region where the electromagnetic fields generated by the CSRR are present. For that purpose, a liquid container acting as a pool is added to the structure. The main advantage of this method, which is validated from the measurement of the complex dielectric constant of olive and castor oil, is that reference samples for calibration are not required.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5948490 | PMC |
| http://dx.doi.org/10.3390/s18040984 | DOI Listing |
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