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RFID的原理是什么？ - 知乎
RFID Readers (Interrogators) • Includes antenna, transceiver, and decoder • Many usage models: – Periodic requests to inquire about any tag in the vicinity – activate upon detection – activate upon request • Read range, memory variable • Data stored for collection, or passed to the data processor RFID Tags - Active • On-board power source and transmitter • Higher range (<100 ...
