Enhanced Radio Frequency Identification (RFID) Reader

摘要

NASA's Johnson Space Center has developed a suite of RFID-based technologies focused on improving communication of an RFID reader with a greater number of RFID tags in open and enclosed areas. Current RFID readers working in open areas are limited by narrow bandwidth restrictions, resulting in relatively coarse ranging resolution and accuracy. Some of the currently available solutions, such as using larger antennas, often result in unacceptable cost, volume, aesthetics, and mass penalties. The Enhanced RFID Reader integrates a frequency multiplexer into the reader to improve communication by dramatically increasing the useful bandwidth between the reader and its associated RFID tags. As a result, the reader can communicate with a greater number of tags without having to increase required power or add more antennas.