专利名称：Differential radio frequency identification
reader
发明人：Alberto J. Fernandez申请号：US11330800申请日：20060112公开号：US07309002B2公开日：20071218
专利附图：
摘要：Systems and techniques for reading a radio frequency identificationtransponder are described. A transmit coil produces a transmit field to power andinterrogate the transponder. A reference coil and a receive coil furnish inputs to a
differential amplifier, balanced so that the differential amplifier produces a
predetermined signal. The receive coil senses changes produced by the transponder,while the reference coil is relatively isolated from such changes. The differential amplifierproduces an amplified signal based on the difference between the inputs from thereceive coil and the reference coil, so that the signal produced by the differentialamplifier is based on the field effect changes produced by the transponder.
申请人：Alberto J. Fernandez
地址：Miami FL US
国籍：US
代理机构：Priest & Goldstein, PLLC
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