Portable radio frequency recognizing read-write machine

Abstract

This invention relates to one portable radio identification reader in radio identification technique field, which comprises radio receive and send module and its connected digital base process module, wherein, the radio receive module adopts double antenna structure machine and radio receiver and the radio emission machine is connected to the emission antenna and the radio receiver machine and receive antenna; the digital base band process module output end is connected to the radio emission machine signal input end and the digital base band process module and radio frequency receiver double connection.

Description

technical field [0001] The invention belongs to the technical field of radio frequency identification (RFID), in particular to the design of a UHF RFID reader-writer. Background technique [0002] Radio Frequency Identification (RFID) technology is a non-contact automatic identification technology. Its basic principle is to use radio frequency signals and their spatial coupling and transmission characteristics to realize automatic identification of stationary or moving objects. A radio frequency identification system generally includes several parts such as radio frequency tags, readers and hosts. When the system is working, firstly, the reader sends a specific inquiry signal. When the radio frequency tag senses this signal, it will give a corresponding response signal; the reader receives the response signal and processes it, and returns it to external host or proceed accordingly. In this way, the information stored in the tag, such as the card number, can be obtained. I...

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Problems solved by technology

This is extremely inconvenient for some applications that requir

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