RFID antenna system
An antenna system, 1. RFID technology, applied in the field of RFID antenna systems, can solve the problems of unsatisfactory transmission distance and high cost of antenna systems
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[0011] As shown in the figure, the present invention includes a control terminal, a reader-writer, an antenna, and an electronic tag, and the control terminal, the reader-writer, and the antenna are connected in sequence.
[0012] The reader includes a DSP microprocessor, a radio frequency analog front end, and a matching circuit, and the DSP microprocessor, the radio frequency analog front end, the matching circuit, and an antenna are connected in sequence.
[0013] The control terminal is a computer.
[0014] The reader emits energy through the antenna to form an electromagnetic field to identify the electronic tag. The range of the electromagnetic field formed by the antenna is the readable and writable area of the radio frequency identification system. The signal Tx carrier frequency from the reader to the card is 13.56MHz, and the signal Rx carrier frequency from the card to the reader is 14.41MHz. A 13.56MHz RFID antenna is designed according to the requiremen...
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