CHIPLESS MICROWAVE IDENTIFICATION TAG
First Claim
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1. A chipless microwave identification tag comprising:
- a dielectric substrate; and
a plurality of antenna elements made from a conductive material and disposed on at least one surface of the dielectric substrate;
wherein when the tag is excited by an incident microwave signal, a reflected wave to identify the tag is generated with a number of specific frequencies altered by microwave resonation of the antenna elements.
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Abstract
A chipless microwave identification tag (200) comprising: a dielectric substrate (210); and a plurality of antenna elements (220) made from a conductive material and disposed on at least one surface (205, 255) of the dielectric substrate (210); wherein when the tag (200) is excited by an incident microwave signal (131), a reflected wave (141) to identify the tag (200) is generated with a number of specific frequencies altered by microwave resonation of the antenna elements (220).
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Citations
16 Claims
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1. A chipless microwave identification tag comprising:
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a dielectric substrate; and a plurality of antenna elements made from a conductive material and disposed on at least one surface of the dielectric substrate; wherein when the tag is excited by an incident microwave signal, a reflected wave to identify the tag is generated with a number of specific frequencies altered by microwave resonation of the antenna elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for identifying a chipless microwave identification tag having antenna elements, the method comprising:
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exciting the tag using an incident microwave signal; and decoding a reflected wave generated in response to the microwave excitation, the reflected wave having a number of specific frequencies altered by microwave resonation of the antenna elements. - View Dependent Claims (11, 12, 13)
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14. A system for identifying a chipless microwave identification tag, the system comprising:
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a microwave signal generator to excite the tag using an incident microwave signal; and a reader to decode a reflected wave generated in response to the microwave excitation, the reflected wave having a number of specific frequencies altered by microwave resonation of the antenna elements. - View Dependent Claims (15)
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16. A method for manufacturing a chipless microwave identification tag, the method comprising:
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injection moulding to form the tag; forming antenna elements on the tag; and trimming the antenna elements to predetermined sizes; wherein the tag is encoded with an identification number based on the number of specific frequencies present in a reflected wave generated after excitation of the tag by an incident microwave signal.
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Specification