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A UHF and HF radio frequency identification tag and its signal transmission method

A radio frequency identification tag and ultra-high frequency technology, applied in the field of radio frequency identification, can solve the problems of unguaranteed security and high cost of tags, and achieve the effect of efficient and safe transmission and low cost of tags

Active Publication Date: 2017-12-08
INST OF ELECTRONICS & INFORMATION ENG OF UESTC IN GUANGDONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing UHF and HF RFID tags are just a simple integration of UHF RFID tags and HF RFID tags, the cost of the tags is higher, and the safety cannot be guaranteed

Method used

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  • A UHF and HF radio frequency identification tag and its signal transmission method
  • A UHF and HF radio frequency identification tag and its signal transmission method
  • A UHF and HF radio frequency identification tag and its signal transmission method

Examples

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Embodiment Construction

[0049] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0050] like figure 1 As shown, a UHF and HF radio frequency identification tag includes a UHF antenna, a high frequency antenna, a switch, a demodulator, a controller, a security identifier, a processor, a modulator, an alarm and a power supply.

[0051] The ultra-high frequency antenna, which is used for receiving the first ultra-high frequency analog signal and transmitting the second ultra-high frequency analog signal, may be a ferrite radio frequency antenna.

[0052] The high-frequency antenna, which is used for receiving the high-frequency first analog signal and transmitting the high-frequency second analog signal, may be an inductively coupled coil antenna.

[0053] The changeover switch is used for mutual ...

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PUM

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Abstract

The invention relates to a UHF and HF radio frequency identification tag and a signal transmission method thereof, comprising a UHF antenna, a high frequency antenna, a switch, a demodulator, a controller, a security identifier, a processor, a modulator, Alarm and power supply. The invention realizes the integration of the UHF antenna, the high-frequency antenna, and the two antennas sharing the same chip in the radio frequency identification tag. First, the UHF signal is used to transmit the signal between the reader and the tag. When the UHF signal is affected by the external environment When the signal quality is low, high-frequency signals are used to transmit information between the reader and the tag; effectively combining the advantages of UHF signals and high-frequency signals to meet the efficient and safe transmission of signals between the reader and the tag, and the tag low cost.

Description

technical field [0001] The invention relates to the field of radio frequency identification, in particular to an ultra-high frequency and high frequency radio frequency identification tag and a signal transmission method thereof. Background technique [0002] With the popularity of the Internet of Things, radio frequency identification technology is widely used in daily life. The radio frequency identification system includes readers and matching tags, and the tags include antennas and chips. [0003] UHF signals have a long transmission distance and a high transmission rate, but are easily affected by the external environment, for example, a strong magnetic field will reduce the signal-to-noise ratio of the transmitted signal, and / or high humidity will cause the signal amplitude of the transmitted signal to decrease and the signal quality is low . The high-frequency signal transmission distance is relatively short, and the transmission rate is slow, but its signal is relat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/077
Inventor 向勇蒋常龙苏阳王维王聪
Owner INST OF ELECTRONICS & INFORMATION ENG OF UESTC IN GUANGDONG