RFID Wetness Sensing Device
First Claim
Patent Images
1. A RFID sensor device, comprising:
- a substrate, having a first and second face; and
a RFID antenna section and sensor patch section, disposed on the first face of the substrate, the two sections interact to create a match between the antenna section and a RFID chip impedance at a desired operating frequency.
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Abstract
The present invention relates to a RFID tag having sensing capabilities. The RFID device includes an antenna section and a sensor patch section. The antenna is coupled to a chip. The sensor patch section upon exposure to an environmental condition causes the RFID device to change from a first operating condition to a second operating condition.
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Citations
20 Claims
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1. A RFID sensor device, comprising:
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a substrate, having a first and second face; and a RFID antenna section and sensor patch section, disposed on the first face of the substrate, the two sections interact to create a match between the antenna section and a RFID chip impedance at a desired operating frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A RFID sensor device, comprising:
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a substrate having a first face and a second face; an antenna pattern disposed on the first face, the antenna pattern having a plurality of cuts to define an operating frequency; a chip connected to the antenna pattern; and a sensor patch section disposed on the first face of the substrate and in operative association with the antenna pattern; and wherein the sensor patch, upon exposure to an environmental condition, causes the RFID device to change from a first operating condition to a second operating condition distinct from the first operating condition.
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10. A RFID sensor device, comprising:
a RFID antenna section and sensor patch section, wherein the sensor patch section is customized by a plurality of cuts to alter a sensing response. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of manufacturing a RFID sensor device, comprising:
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providing a substrate; placing a conductive material on the substrate; patterning the conductive material by an on demand laser to form one of a sensor or antenna pattern; and printing over at least one of the sensor or antenna pattern with a material to provide enhanced sensitivity or performance. - View Dependent Claims (17, 18, 19, 20)
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Specification