Patent ID: 7109867
Filing Date: 2006-09-19
Classification: G06K,G08B

Abstract:
1. A radio-frequency identification (RFID) tag comprising: an antenna; an RFID chip connected to the antenna for communicating with a reader; and an active element operatively disposed with respect to the antenna and having: an activated state in which the antenna is enabled for communicating with a reader in a far field; and a deactivated state in which the antenna is disabled from communicating with a reader in a far field; the active element changing from the activated state to the deactivated state when operatively subjected to an electronic article surveillance (EAS) deactivator; an EAS device including a resonant circuit with a capacitive element that has an active state by functioning as a capacitor at low frequencies and a deactivate state by functioning as a transmission line when the EAS device is subjected to ultra-high frequencies; the active element to be in the activated state when the capacitive element is activated; and the active element to be in the deactivated state when the capacitive element is deactivated.