Design and development of compact UHF RFID reader using SD interface

In this study, we developed UHF RFID reader on microSD which can be inserted into external memory on smartphone. A RFID application on smartphone controls RFID reader on microSD card and acquires information from RFID tag via SD interface which mainly uses the external memory. We applied flexible antenna to UHF RFID reader on microSD to guarantee tagging performance within few centimeters. The UHF RFID reader on microSD card which implemented in this research can utilizes development of new smartphone service base on individual item tagging, and provides advantage which expands B2B application to B2C application area.