MULTIPLE BAND RFID READER DEVICE
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United States of America Patent
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Issued Date -
Dec 10, 2009
app pub date -
Jul 6, 2007
filing date -
Jul 10, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
There is disclosed a multi-band RFID reader, including a duplexer for separating a data signal received from a tag according to a frequency band, a directional coupler for diverging a part of the signal separated through the duplexer, a Digital Signal Processor (DSP) for determining a frequency band of the diverged signal and generating a control signal based on the determination result, and Radio Frequency (RF) switch for turning on/off transmission/reception modes in response to the control signal of the DSP. The multi-band RFID reader can read signals received from various kinds of tags by employing a multi-frequency band irrespective of frequency bands.
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