Invention Grant
US08093990B2 Far field RFID reader with blocking 有权
远场RFID阅读器带阻塞

Far field RFID reader with blocking
Abstract:
A far field radio frequency identification (RFID) reader includes a baseband processing module, a transmitter section, and a receiver section. The receiver section includes a low noise amplifier module, a down conversion module, and a current mode blocking circuit. The low noise amplifier module amplifies an inbound RF signal to produce an amplified inbound RF signal. The down conversion module converts the amplified inbound RF signal into the inbound baseband signal. The current mode blocking circuit substantial compensates for a blocking current component of the baseband inbound signal and passes, substantially unattenuated, a signal current component of the baseband inbound signal.
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