| 摘要 |
An improved electronic article surveillance device of the type utilized a parallel resonant circuit and primarily intended for use in tagging retail items for the purpose of preventing unauthorized removal of theft of such items includes, within the parallel resonant circuit, at least one transmission line resonator whereby the device may be easily and efficiently deactivated. The length of the transmission line resonator is one-quarter wave length of the deactivation frequency, and deactivation frequency is preferably selected from readily available electromagnetic radiation such as, for example, microwave energy or police radar energy.
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