Combined RF and EAS device

Assembly Automation

ISSN: 0144-5154

Article publication date: 1 March 2000




(2000), "Combined RF and EAS device", Assembly Automation, Vol. 20 No. 1.



Emerald Group Publishing Limited

Copyright © 2000, MCB UP Limited

Combined RF and EAS device

Combined RF and EAS device

Keywords: Magnetic, Security

Applicant: Intermec IP Corp. (US)Patent number: US5939984Publication date: 17 August 1999

Title: Combination radio frequency transponder (RF tag) and magnetic electronic article surveillance (EAS) material

The invention relates to an identification tag having a large number of bits of information, where it has an electronic article surveillance function which is difficult to defeat. An RF ID tag is combined with a magnetic EAS tag. The conducting elements of the RF ID tag such as the antenna or the parasitic elements used to tune the antenna characteristics may be wholly or partially made from a nonlinear magnetic material which produces a large signal in a magnetic EAS detection field. The nonlinear magnetic material may be coated or electroplated or electrolessly plated with a good electrical conductor to enhance the antenna characteristics of the RF ID tag. The nonlinear magnetic material may be advantageously connected to dielectric material used to support and/or encapsulate the antenna and electronic components of the RF ID tag.

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