RFID MEMORY DEVICES

An RFID memory device includes two arrays of resonant members. A first array extends in a first member direction and a second array extends in a second member direction. The device includes one or more elements for transforming energy associated with vibration of the resonant members into a change i...

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Bibliographic Details
Main Authors CHAFFEY JASON, DICKSON ADAM
Format Patent
LanguageEnglish
Published 21.07.2011
Subjects
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
INFORMATION STORAGE
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
STATIC STORES
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Summary:An RFID memory device includes two arrays of resonant members. A first array extends in a first member direction and a second array extends in a second member direction. The device includes one or more elements for transforming energy associated with vibration of the resonant members into a change in impedance of an electrical equivalent circuit of the memory device. The magnitude of impedance change caused by resonance of the first resonant members is maximised at a different magnetic field direction to that at which the magnitude of the impedance change caused by resonance of the second resonant members is maximised. Thus, different data may be encoded on each array and separately read. The resonant members may form part of a common electrical conductor that forms a coupling element for coupling with an applied excitation signal and causing vibration of the resonant members.
Bibliography:Application Number: US200913000586