Techniques for detecting RFID tags in electronic article surveillance systems using frequency mixing
First Claim
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1. A system, comprising:
- an RFID module comprising an energy coupler to receive transmitted energy comprising a first signal at a first frequency and a second signal at a second frequency, and a mixing element to mix said first and second signals, to generate a third signal at a third frequency, and said energy coupler to transmit said third signal to an EAS detection system.
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Abstract
Disclosed are a system and method to detect RFID tags in electronic article surveillance systems using frequency mixing. The system includes an RFID module that includes an energy coupler to receive transmitted energy that includes a first signal at a first frequency and a second signal at a second frequency, and a mixing element to mix the first and second signals, to generate a third signal at a third frequency, and the energy coupler to transmit the third signal to an EAS detection system. Other embodiments are described and claimed.
48 Citations
23 Claims
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1. A system, comprising:
an RFID module comprising an energy coupler to receive transmitted energy comprising a first signal at a first frequency and a second signal at a second frequency, and a mixing element to mix said first and second signals, to generate a third signal at a third frequency, and said energy coupler to transmit said third signal to an EAS detection system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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receiving a first and second signal at a first and second frequency at an RFID module;
mixing said first and second signals at said RFID module;
generating a third signal at a third frequency; and
transmitting said third signal to an EAS detection system. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification