Battery-assisted backscatter RFID transponder
June 30, 2025. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesThin film battery and method for making same Full duplex modulated backscatter system Flexible thin layer open electrochemical cell and applications of same Method and apparatus for improving the interrogation range of an RF tag Inexpensive modulated backscatter reflector Method for making electrical and electronic devices with vertically integrated and interconnected thin-film type battery Apparatus and method for reading radio frequency identification transponders used for livestock identification and data collection Radio frequency data communications device Radio frequency data communications device with adjustable receiver sensitivity and method Smart reflection antenna system and method InventorsAssigneeApplicationNo. 11169736 filed on 06/30/2005US Classes:340/572.8, Specified device housing or attachment means340/572.1, Detectable device on protected article (e.g., "tag")340/572.4, Specified processing arrangement for detected signal340/573.1Human or animalExaminersPrimary: Nguyyen, Tai T.Attorney, Agent or FirmInternational ClassG08B 13/14AbstractA radio frequency transponder includes at least one battery, which is coupled to provide electrical power for operating the transponder and at least one antenna, which is configured to receive and backscatter RF interrogation radiation from an interrogation device. An integrated circuit is arranged to store a code including information and, powered only with energy provided by the battery, to vary a radiation characteristic of the antenna responsively to the code so as to modulate the information onto the backscattered radiation.Other References
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