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RFID system including peak detector

A peak detection and peak technology, applied in the direction of cooperative devices, instruments, induction record carriers, etc., can solve problems such as difficult to translate RF signals

Inactive Publication Date: 2007-06-06
COMM TECH U
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficulty interpreting the received tag's RF signal due to dynamically changing peaks and noise of the actual RF signal

Method used

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  • RFID system including peak detector
  • RFID system including peak detector
  • RFID system including peak detector

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Experimental program
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Embodiment Construction

[0028] Now, the present invention will be described in detail with reference to the accompanying drawings.

[0029] Fig. 4 is a configuration diagram showing an RFID system according to the present invention.

[0030] Referring to Fig. 4, the RFID system according to the present invention includes a reader 100 for transmitting and receiving RF signals; The information stored therein is transmitted to the reader 100 . Reader 100 comprises: digital processor 110, is used for processing received or transmitted signal; Peak detection device 157, is used for detecting the peak value of the response signal output from second frequency synthesizer 153; Forward signal processor 130 , for providing the modulated signal output by the digital processor 110 to the tag through the RF antenna ANT;

[0031] The forward signal processor 130 includes: a first frequency synthesizer 132, which mixes the I and Q signals generated by the data in the digital processor 110 with the carrier signal ...

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Abstract

The present invention discloses an RFID (Radio Frequency Identification) system for reading and writing an identification information of an RFID tag in a non-contacting manner using a radio frequency. In accordance with RFID system of the present invention, a peak value of a response signal dynamically generated according to an environmental condition including a distance between a reader and the tag is detected, and an identification information provided from the tag is accurately read base on the peak value.

Description

technical field [0001] The present invention relates to an RFID (Radio Frequency Identification) system for reading and writing identification information of RFID tags in a non-contact form using radio frequency, and in particular to an RFID system comprising a peak detection device, wherein the detection is based on The peak value of the response signal dynamically generated by the environmental conditions including the distance between the reader and the tag, and the accurate reading of the identification information provided by the tag based on the peak value. Background technique [0002] RFID refers to a technology of inputting unique identification information into a small IC chip, and using radio frequency to identify, track, or manage objects or animals having the IC chip attached thereto. An RFID system includes an RFID tag or RFID transponder having unique identification information stored therein and attached to an object or animal; and a reader or interrogator fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00
CPCG06K7/0008G06K17/00
Inventor 朴准奭吴夏岭成荣洛
Owner COMM TECH U