Radio frequency identification reader-writer

Abstract

The invention discloses a radio frequency identification reader-writer, comprising a radio frequency transceiver front-end module, a digital signal processor, a receiver, a transmitter and a frequency synthesizer, wherein the radio frequency transceiver front-end module is used for receiving and transmitting a radio frequency signal, the digital signal processor is used for processing the digitalradio frequency signal received by the radio frequency transceiver front-end module and outputting the digital signal to be transmitted, the receiver is used for processing radio frequency signals ofeach frequency band, received by the radio frequency transceiver front-end module and outputting the processed signal to the digital signal processor, the transmitter is used for processing the digital signals corresponding to various frequencies outputted by the digital signal processor and outputting the processed signal to the radio frequency transceiver front-end module, and the frequency synthesizer is used for supplying a local oscillator frequency mixing signal to the receiver or the transmitter in at least one working frequency band. By application of the radio frequency identification reader-writer, the design can be simplified, the development time can be shortened, and the development and design cost can be saved.

Description

technical field [0001] The invention relates to the technical field of non-contact automatic identification, in particular to a radio frequency identification reader. Background technique [0002] Highly integrated, low-cost, and low-power radio frequency identification (RFID, Radio Frequency Identification) readers play an important role in building an intelligent society. If it is integrated into mobile phones and other types of mobile terminals, it will not only further expand the many radio frequency identification application fields that have been gradually implemented at present, but also generate many new application fields. For example, users can easily grasp the product information they are interested in through the Internet connection of mobile phones, and mobile phones integrated with RFID readers and GPS receiving functions can seamlessly monitor, locate and track products, thereby improving the flexibility of consumers to choose products And the management effi...

AI Technical Summary

Problems solved by technology

However, due to the non-unified global standards and frequency bands of RFID, and the incompatibility of products, the promotion of various applications is greatly hindered. Therefore, the market for multi-band, multi-standard, and portable RFID readers will emerge as the times require.

At present, RFID readers based on discrete components have been fully developed, but the equipment is generally large, expensive and consumes high power

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