Sensing Radio Frequency Identification Device with Reactive Strap Attachment
First Claim
1. An RFID device, comprising:
- an antenna;
an interposer;
an integrated circuit coupled to the interposer;
a sensing material disposed between the interposer and the antenna; and
wherein the electrical characteristics of the sensing material changes in response to exposure to an environmental condition.
2 Assignments
0 Petitions
Accused Products
Abstract
A sensing radio frequency identification device with a strap that is reactively attached to an antenna by a sensing material is provided. In one embodiment, the RFID device includes an antenna, an interposer (or strap), an integrated circuit coupled to the interposer, and a sensing material disposed between the interposer and the antenna. As the relative permittivity of the sensing material changes in response to its exposure to an environmental condition, the reactive coupling between the interposer and the antenna likewise changes thereby causing changes in one or more parameters of communication such as frequency. The sensing material 70 may be a dielectric material selected to have a relative permittivity (i.e., dielectric constant) that varies based on exposure to one or more environmental conditions such as, for example, temperature (i.e., hot or cold), humidity, chemical, biological entity, nuclear, physical, pressure, light, liquid, nuclear and/or other condition.
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Citations
20 Claims
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1. An RFID device, comprising:
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an antenna; an interposer; an integrated circuit coupled to the interposer; a sensing material disposed between the interposer and the antenna; and wherein the electrical characteristics of the sensing material changes in response to exposure to an environmental condition. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of sensing and communicating information, comprising:
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providing a radio frequency identification (RFID) device that includes an interposer coupled to an integrated circuit, and an antenna; providing a sensing material in proximity to the interposer and antenna; changing an electrical parameter of the sensing material in response to the sensing material sensing an environmental condition; and coupling the interposer to the antenna as a result of the changing electrical parameter of the sensing material. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An RFID device, comprising:
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an antenna; an interposer; an integrated circuit reactively coupled to the interposer; a sensing material bridging a space between the antenna and the interposer; and wherein the sensing material has an electrical property alterable in response to exposure to an environmental condition to either reactively or conductively couple the interposer to the antenna. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification