SECURITY SENSOR SYSTEM
First Claim
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1. A system suitable for detecting an article comprising:
- a) a tag for affixing to the article, the tag being capable of generating a responsive microwave signal in response to a microwave detection signal; and
b) at least one transceiver for generating the microwave detection signal and for receiving the responsive microwave signal.
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Abstract
A security system suitable for retail establishments carrying articles comprises tags for affixing to the articles, the tag being capable of generating a responsive microwave signal in response to a microwave detection signal; and at least one transceiver for generating the microwave detection signal and for receiving the responsive microwave signal.
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Citations
29 Claims
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1. A system suitable for detecting an article comprising:
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a) a tag for affixing to the article, the tag being capable of generating a responsive microwave signal in response to a microwave detection signal; and
b) at least one transceiver for generating the microwave detection signal and for receiving the responsive microwave signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 26, 27, 28, 29)
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11. A tag comprising:
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a) a substrate having first and second sides;
b) a first dipole antenna fixed at the first side and having two poles, each pole having an end and a base, the ends of the first dipole antenna being electrically connected; and
c) a second dipole antenna fixed at the second side and having two poles, each pole having an end and a base, the ends of the second dipole antenna being electrically connected. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system suitable for detecting the unauthorized removal of articles from a facility comprising:
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a) tags for affixing to the articles, each tag being capable of generating a responsive microwave signal in response to at least one microwave detection signal;
b) at least one transceiver for generating the detection signal at an exit of the facility and for receiving the responsive microwave signal; and
c) at least one presence detector for detecting a person at the exit and then causing the transceiver to generate the detection signal. - View Dependent Claims (22, 23, 24, 25)
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Specification