RFID READER PERFORMING IMPEDANCE MATCHING TO PREVENT PERFORMANCE DETERIORATION
1 Assignment
0 Petitions
Accused Products
Abstract
A radio frequency identification (RFID) reader is provided. The RFID reader performs impedance matching based on a radio frequency (RF) signal received from a tag and whether the RFID reader has been attached to a human body, thereby prevent performance deterioration caused by an impedance change of an antenna due to permittivity of the human body when the RFID reader is used being attached to the human body.
23 Citations
22 Claims
-
1-9. -9. (canceled)
-
10. A radio frequency identification (RFID) reader capable of impedance matching for prevention of performance deterioration when the RFID reader is attached to a human body, the RFID reader comprising:
-
a receiver configured to convert a radio frequency signal received through an antenna into a baseband signal; a sensor configured to detect whether the RFID reader has been attached to the human body; and an impedance matching unit configured to perform impedance matching of the antenna upon the radio frequency signal received through the antenna based on whether the RFID reader has been attached to the human body. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. An impedance matching method of a radio frequency identification (RFID) reader for prevention of performance deterioration when the RFID reader is attached to a human body, the method comprising:
-
converting a radio frequency signal received through an antenna into a baseband signal; detecting whether the RFID reader has been attached to the human body; and performing impedance matching of the antenna upon the radio frequency signal received through the antenna based on whether the RFID reader has been attached to the human body. - View Dependent Claims (21, 22)
-
Specification