| Autor: |
Pawde, Sanyatjeet, Gupta, Nisha |
| Předmět: |
|
| Zdroj: |
Microwave Review; Jul2024, Vol. 30 Issue 1, p16-22, 7p |
| Abstrakt: |
In the present work, a microwave sensor is proposed for detection of conductivity of the material. The sensor consists of a planar complementary circular ring structure etched on the top of the single sided copper clad substrate material and a shallow groove machined at the bottom surface coinciding with the ring structure. The conducting material under test (MUT), curved in the form of a split ring is placed in the groove. The proposed microwave sensor is particularly designed to work at 5.2 GHz Wi-Fi frequency. The key concept is the interaction of the EM wave with the material of different conductivity which results in change in reflection coefficient owing to different depth of penetration at a particular frequency. A reference set is generated by recording the variation in reflection coefficient for different materials, which is the main parameter in distinguishing between materials of different conductivities. The sensor dimension is 4 cm X 4 cm (0.083277 λg), λg being the guide wavelength, the MUT is a wire of length 4 cm with thickness ≤ 1 mm placed in form of circular split ring within the groove. The sensor corresponds to sensitivity of 3.6 dB/unit change in electrical conductivity. The proposed sensor facilitates rapid and convenient detection of the conductivity of the material. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
