Antenna for identification tag and identification tag with antenna
First Claim
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1. An ultra-high frequency identification tag for attachment to a livestock animal, said identification tag comprising:
- a body;
an integrated circuit; and
an ultra-high frequency antenna device electrically connected to said integrated circuit, wherein the antenna device comprises;
a meander line antenna; and
a substrate;
said antenna device being operable to use a body of the animal to which it is attached as part of a tuning circuit of said antenna device such that said antenna device is operable to use the body of the animal as a ground plane; and
wherein said antenna device is purposely detuned such that it is only tuned to a desired frequency when the tag is attached to the animal.
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Abstract
Disclosed is an ultra high frequency antenna device for use with an identification tag for attachment to an animal. The antenna device comprises: a meander line antenna; and a substrate. The antenna device is operable to use the body of the animal to which it is attached as part of the tuning circuit of said antenna device. Also disclosed is an ultra-high frequency identification tag comprising such an antenna device, and a method of manufacturing such an ultra-high frequency identification tag.
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Citations
18 Claims
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1. An ultra-high frequency identification tag for attachment to a livestock animal, said identification tag comprising:
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a body; an integrated circuit; and an ultra-high frequency antenna device electrically connected to said integrated circuit, wherein the antenna device comprises; a meander line antenna; and a substrate; said antenna device being operable to use a body of the animal to which it is attached as part of a tuning circuit of said antenna device such that said antenna device is operable to use the body of the animal as a ground plane; and
wherein said antenna device is purposely detuned such that it is only tuned to a desired frequency when the tag is attached to the animal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification