Mobile radio frequency identification (MRFID) reader
First Claim
1. A mobile radio frequency identification (mRFID) reader having a receiving circuit, the receiving circuit comprising:
- 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.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
12 Claims
-
1. A mobile radio frequency identification (mRFID) reader having a receiving circuit, the receiving circuit comprising:
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification