A high security RFID tag antenna, RFID tag and radio frequency method
An RFID tag, high security technology, applied in the field of radio frequency identification, can solve the problems of metal interference, information electromagnetic interference, tag antenna hidden danger, etc., to achieve the effect of increased transmission, maximum antenna power, and high antenna power
Active Publication Date: 2018-05-15
INST OF ELECTRONICS & INFORMATION ENG OF UESTC IN GUANGDONG
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Problems solved by technology
[0004] In the prior art, the exchange of information energy between the tag and the reader has been realized, but the transmitted information is subject to various interferences such as electromagnetic interference, metal interference, etc.
In the process of transmitting information energy, because the existing antenna structure is a single loop antenna, the antenna cannot receive information due to distance and shape problems; on the other hand, the existing antennas do not consider information security problem, since the tag and the reader are connected wirelessly, the tag antenna also has a great hidden danger and is vulnerable to attack
Method used
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[0037] 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.
[0038] Such as figure 1 As shown, it is a structural schematic diagram of a high-security RFID tag antenna of the present invention, including a substrate 1, which is used as a substrate, and is provided with a power comparison chip 2, a signal processing chip 3, a switch module 4 and a plurality of antennas. The two antennas are respectively connected to the power comparison chip 2 and the signal processing chip 3 through wires, and the signal processing chip 3 is also connected to the switch module 4;
[0039] The switch module 4 is used to transmit signals to multiple antennas when the button is pressed;
[0040] Multiple antennas are used to receive signals and send signals to the power comparison chip 2;
[0...
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The invention relates to a high-security RFID tag antenna, including a substrate, the substrate is used as a substrate, and is provided with a power comparison chip, a signal processing chip, a switch module and a plurality of antennas, and the plurality of antennas are respectively connected to the power comparison chip and the signal processing chip through wires. Connection, the signal processing chip is connected to the switch module; the switch module is used to transmit the signal to multiple antennas when the button is pressed; multiple antennas are used to receive the signal and send the signal to the power comparison chip; the power comparison chip is used for multiple antennas The power comparison of the power comparison chip selects the antenna with the highest power and sends the information of the antenna with the highest power to the signal processing chip; the signal processing chip receives the information sent by the power comparison chip and connects to the antenna with the highest power. The invention also relates to high security RFID tags, involving radio frequency methods. The high-safety RFID tag antenna, the RFID tag and the radio frequency method of the invention improve the safety and reliability of the RFID antenna, and can increase the transmitting efficiency and receiving efficiency of the RFID tag antenna.
Description
technical field [0001] The invention relates to the technical field of radio frequency identification, in particular to a high-security RFID tag antenna, an RFID tag and a radio frequency method. Background technique [0002] Radio Frequency Identification (RFID) is an automatic identification method that can identify specific targets and read and write related data through radio signals without the need to establish mechanical or optical contact between the identification system and specific targets. Therefore, it is widely used It is used in libraries, access control systems and food safety traceability and other fields. [0003] The radio frequency identification system includes two parts: the reader and the tag. The RFID reader is a device that reads and writes the RFID tag with the demodulation of the antenna wave. The RFID tag is composed of a small chip and an antenna. The chip receives the signal emitted by the reader antenna. Simultaneous modulation and return, the...
Claims
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IPC IPC(8): G06K19/077G06K7/00
Inventor 向勇王维魏乐乐苏阳
Owner INST OF ELECTRONICS & INFORMATION ENG OF UESTC IN GUANGDONG