6533b82bfe1ef96bd128dc91
RESEARCH PRODUCT
Design of a Planar Sensor Based on Split-Ring Resonators for Non-Invasive Permittivity Measurement
Alibakhshikenari M.Virdee B. S.Elwi T. A.Lubangakene I. D.Jayanthi R. K. R.Al-behadili A. A.Hassain Z. A. A.Ali S. M.Pau G.Livreri P.Aissa S.subject
complex permittivity microstrip technology sensor split-ring resonatorSettore ING-INF/01 - Elettronicadescription
The permittivity of a material is an important parameter to characterize the degree of polarization of a material and identify components and impurities. This paper presents a non-invasive measurement technique to characterize materials in terms of their permittivity based on a modified metamaterial unit-cell sensor. The sensor consists of a complementary split-ring resonator (C-SRR), but its fringe electric field is contained with a conductive shield to intensify the normal component of the electric field. It is shown that by tightly electromagnetically coupling opposite sides of the unit-cell sensor to the input/output microstrip feedlines, two distinct resonant modes are excited. Perturbation of the fundamental mode is exploited here for determining the permittivity of materials. The sensitivity of the modified metamaterial unit-cell sensor is enhanced four-fold by using it to construct a tri-composite split-ring resonator (TC-SRR). The measured results confirm that the proposed technique provides an accurate and inexpensive solution to determine the permittivity of materials.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2023-06-01 |