A Two-Turn Shielded-Loop Magnetic Near-Field PCB Probe for Frequencies up to 3 GHz
Abstract
:1. Introduction
- sensitivity,
- frequency range,
- electric field suppression ratio,
- spatial resolution.
2. Materials and Methods
2.1. Operating Principle
2.2. Benchmark Probe
2.3. Two-Turn Probe
3. FEM Simulations
4. Results and Discussion
4.1. Experimental Setup
4.2. Sensitivity Measurements
4.3. Edge Plating Influence on Electric Field Suppression
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Parameter | Dimension (mm) | Parameter | Dimension (mm) |
---|---|---|---|
15.2 | 0.3 | ||
70 | 1 | ||
3 | 0.3 | ||
3 | 63 | ||
2.1 | 0.5 | ||
2.1 | 0.5 |
Optimization Variable | Range (mm) | Results (mm) |
---|---|---|
14–16 | 15.2 | |
65–75 | 70 | |
0.2–0.5 | 0.3 | |
1.7–2.1 | 2.1 |
Parameter | Layer Name | Material | Thickness (mm) |
---|---|---|---|
Top Solder | Solder Resist | 0.01 | |
L1-Top Layer | Copper | 0.018 | |
Dielectric 1 | FR4 | 0.5 | |
L2-Mid Layer 1 | Copper | 0.018 | |
Dielectric 2 | FR4 | 0.5 | |
L3-Mid Layer 2 | Copper | 0.018 | |
Dielectric 3 | FR4 | 0.5 | |
L4-Bottom Layer 1 | Copper | 0.018 | |
Bottom Solder | Solder Resist | 0.01 |
Frequency | ||||
---|---|---|---|---|
Probe | 0.5 GHz | 1 GHz | 2 GHz | 3 GHz |
NFP1—simulation | −40.8 | −33.9 | −30.5 | −31.1 |
NFP1—measurement | −40.4 | −32.8 | −31.5 | −30.2 |
NFP2—simulation | −32.7 | −28.2 | −25.3 | −39.6 |
NFP2—measurement | −33.6 | −28.7 | −23.8 | −25.2 |
NFP3—simulation | −29.5 | −26.5 | −27.5 | −31.6 |
NFP3—measurement | −29.1 | −25.7 | −29.2 | −30.1 |
NFP4—simulation | −32.1 | −29.0 | −29.1 | −33.7 |
NFP4—measurement | −32.6 | −28.1 | −31.1 | −31.8 |
NFP5—simulation | −33.3 | −30.4 | −35.0 | −45.3 |
NFP5—measurement | −33.2 | −29.1 | −36.6 | −39.3 |
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Filipašić, M.; Dadić, M. A Two-Turn Shielded-Loop Magnetic Near-Field PCB Probe for Frequencies up to 3 GHz. Sensors 2023, 23, 7308. https://doi.org/10.3390/s23167308
Filipašić M, Dadić M. A Two-Turn Shielded-Loop Magnetic Near-Field PCB Probe for Frequencies up to 3 GHz. Sensors. 2023; 23(16):7308. https://doi.org/10.3390/s23167308
Chicago/Turabian StyleFilipašić, Mario, and Martin Dadić. 2023. "A Two-Turn Shielded-Loop Magnetic Near-Field PCB Probe for Frequencies up to 3 GHz" Sensors 23, no. 16: 7308. https://doi.org/10.3390/s23167308