Wearable UHF RFID tag resistant to liquid
A label and liquid technology, applied to record carriers used in machines, instruments, computer components, etc., can solve the problems of RFID chip conjugate matching, drop, and electromagnetic waves
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Embodiment 1
[0024] like figure 1 As shown, the total length of the passive RFID antenna is 58mm, and the width is 18mm; the antenna structure is left-right symmetrical; three lengths of 16mm, 1mm wide rectangle; etch three rectangles with a length of 16mm and a width of 1mm along the width direction at 0mm, 6mm, 10mm, and 14mm from the upper edge of the antenna, respectively; At the position of 4mm from the left edge, etch a rectangle with a length of 25mm and a width of 1mm along the length direction; etch a rectangle with a length of 18mm and a width of 1mm at a position of 0mm from the lower edge of the antenna and 11mm from the left edge in the length direction. Rectangular; Etch an isosceles right-angled triangle with a right-angled side of 2mm at a distance of 23mm from the left edge of the antenna, one of the waists coincides with the upper edge of the antenna, and the other waist is parallel to the left edge of the antenna, with a distance of 25mm; the right half of the antenna P...
Embodiment 2
[0028] Figure 5 The magnetic material used for this product is electromagnetic anti-interference magnetic cloth, which is made by mixing special soft magnetic rubber with rare metal powder and ferrite. like Image 6 As shown, on the basis of Embodiment 1, a rectangular magnetic material with a length of 6 mm and a width of 2 mm is placed in the resonant cavity of the antenna. The geometric center of the magnetic material overlaps with the geometric center of the resonant cavity, which can greatly improve the human body. The transmission distance of the tag when worn.
Embodiment 3
[0030] like Figure 7 As shown, on the basis of the second embodiment, a rectangular magnetic material with a length of 5 mm and a width of 2 mm is placed in the rectangular cavity of the antenna at a position 2 mm above the chip, and the magnetic material is symmetrical about the symmetry axis of the antenna. The radio frequency distance of the tag in this embodiment is increased by more than ten centimeters compared with the second embodiment.
PUM
![No PUM](https://static-eureka.patsnap.com/ssr/23.2.0/_nuxt/noPUMSmall.5c5f49c7.png)
Abstract
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