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Journal of Sensors
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2020
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Article
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Tab 2
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Research Article
Research on an Improved Metal Surface Defect Detection Sensor Based on a 3D RFID Tag Antenna
Table 2
Antenna structure parameter size (unit: mm).
Parameter
FR4L
FR4W
FR4H
Size
22
16
16
6.2
1
2
1
0.5
2.8