Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2007-02-06
2010-11-02
Wu, Daniel (Department: 2612)
Communications: electrical
Selective
Interrogation response
C340S010100, C340S010300, C340S572400, C455S060000, C455S139000, C455S276100
Reexamination Certificate
active
07825773
ABSTRACT:
A mobile radio frequency identification (mRFID) reader having a receiving circuit is provided. The receiving circuit includes a local oscillator which generates a carrier signal at a predetermined frequency band; a mixer which mixes a tag signal received from a tag with the carrier signal, to lower a frequency of the tag signal; a phase adjusting block which adjusts a phase of the carrier signal by determining a phase of the tag signal; and a control block which processes the tag signal through a series of operations, and controls an operation of the phase adjusting block to compensate for a phase delay of the tag signal according to an output of the processed tag signal. Because the mRFID reader can be provided as small as a half size of a related art reader, a mobile communication terminal accommodating the mRFID reader can be compact-sized. Additionally, because the number of components for the receiving circuit decreases, not only the power consumption but also the unit price can be reduced.
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Kang Woo-shik
Koo Si-gyoung
Lee Heung-bae
Rushing Mark
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
Wu Daniel
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