Using PHYCHIPS\'s UHF band front-end transceiver chip PR9000 as the core chip and combining it with a power management module, an ultra-small UHF RFID reader/writer module is designed and implemented. In the operating frequency range of 840~960 MHz, the receiving sensitivity is less than -70 dBm, the transmitting power is adjustable from -13 to 10 dBm, and the power consumption is less than 5 W. The UHF RFID reader/writer module has the advantages of small size, high sensitivity and low power consumption. It can be embedded in mobile terminals such as mobile phones and printers and has a wide range of applications.
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