In a UHF passive RFID system, a reader transmits an unmodulated continuous wave (CW) to tags, which not only provides energy to tags but also serves as the carrier of tag backscatter signals.
在超高频被动式射频辨识系统里,读取器调变过
连续波
标签,其不但可提供能量
标签也作为标签反向散射
的载波。