RFID CARD WITH PIEZOELECTRIC ELEMENT
First Claim
1. A radio-frequency identification (RFID) card, comprising:
- at least one card layer; and
an electrical circuit, carried by the at least one card layer, including;
an RFID element that is adapted to store RFID data information,an antenna, electrically connected at each of two ends to the RFID element, anda piezoelectric element, electrically connected to at least one of the two ends of the antenna,whereby mechanical actuation of the piezoelectric element enables the antenna to be energized by a transmission from an RFID reader terminal, thereby powering the transmission of RFID data information from the RFID element to the RFID reader terminal.
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Accused Products
Abstract
A radio-frequency identification (RFID) card includes an RFID element that is adapted to store RFID data information, an antenna, electrically connected at each of two ends to the RFID element, and a piezoelectric element, electrically connected to at least one of the two ends of the antenna, whereby mechanical actuation of the piezoelectric element enables the antenna to be energized by a transmission from an RFID reader terminal, thereby powering the transmission of RFID data information from the RFID element to the RFID reader terminal. An RFID system includes such a card, and an RFID reader terminal. A method of controlling the transmission of RFID data information from an RFID card includes positioning an RFID card, having a piezoelectric element electrically connected to an antenna that is electrically connected at each of two ends to an RFID element, in the vicinity of an RFID reader terminal; mechanically actuating the piezoelectric element; as a function of the mechanically actuating step, enabling the antenna to be energized by a transmission from an RFID reader terminal; and using the energy from the transmission from the RFID reader terminal, powering the transmission of RFID data information from the RFID element to the RFID reader terminal.
34 Citations
24 Claims
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1. A radio-frequency identification (RFID) card, comprising:
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at least one card layer; and an electrical circuit, carried by the at least one card layer, including; an RFID element that is adapted to store RFID data information, an antenna, electrically connected at each of two ends to the RFID element, and a piezoelectric element, electrically connected to at least one of the two ends of the antenna, whereby mechanical actuation of the piezoelectric element enables the antenna to be energized by a transmission from an RFID reader terminal, thereby powering the transmission of RFID data information from the RFID element to the RFID reader terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24-152. -152. (canceled)
Specification