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,读取器传送未调变过之连续波讯号给标签,其不但
提供能量给标签也作为标签反向散射讯号的载波。
(radio frequency identification devices)
(RFI


