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https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/1553168/trf7970a-rf-power
工具/软件：
TRF7970A 是否可以由射频信号电源供电、或者必须具有电池等外部电源。
TI 是否有可 通过射频信号电源操作的 RFID 元件。
您好、
这个帖子应该会回答您的问题。
https://e2e.ti.com/support/wireless-connectivity/other-wireless-group/other-wireless/f/other-wireless-technologies-forum/734529/trf7970a-use-of-device-as-passive-tag
