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Electronic tag

A technology of electronic tags and microstrip lines, applied in the field of radio frequency identification, can solve the problems of low effective utilization of radiated energy, poor anti-interference, and inability to meet the requirements of road vehicles, and achieve the effect of improving the effective utilization

Inactive Publication Date: 2016-08-10
EVERGRANDE FF INTELLIGENT AUTOMOTIVE GUANGDONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing electronic tags are omnidirectional electronic tags. If they are buried on the road, they will receive microwave signals from all directions. The distance from the radar is meaningful, so the anti-interference is poor and the effective utilization rate of radiated energy is low, which cannot meet the requirements of road vehicles

Method used

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Embodiment 1

[0021] figure 2 A schematic structural diagram of an embodiment of an electronic tag provided by the present invention. Such as figure 2 As shown, the electronic tag in the embodiment of the present invention may specifically include a chip 1 and an antenna, and the antenna is a directional antenna 21 .

[0022] The directional antenna 21 is an antenna that transmits and receives microwaves particularly strongly in one or several specific directions, while transmitting and receiving microwaves in other directions is zero or extremely small. The chip 1 receives the microwave signal through the directional antenna 21 , and sends the electronic code stored in the chip 1 through the directional antenna 21 by virtue of the energy obtained by the induced current.

[0023] In the field of automatic driving, vehicle radar generally uses 77GHz ranging radar to determine the distance between the vehicle in front and the vehicle, such as image 3 As shown, the applicable range of th...

Embodiment 2

[0027] Figure 7 A schematic structural diagram of another embodiment of the electronic tag provided by the present invention. Such as Figure 7 As shown, the electronic tag of the embodiment of the present invention is figure 2 A possible implementation of the electronic tag of the shown embodiment, in figure 2 Technically in the illustrated embodiment, the directional antenna 21 may specifically be various antennas capable of directional transmission and reception of microwave signals, such as the array antenna 71 .

[0028] Further, in order to realize directional transmission and reception of microwave signals, the array antenna 71 may specifically include a microstrip line 72 and a plurality of parallel radiation units 73 ( Figure 7 Take four radiating units 73 as an example), and multiple radiating units 73 are respectively connected to the chip 1 through microstrip lines.

[0029] Further, the array antenna 71 may be specifically located on one side of the chip 1...

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Abstract

The invention provides an electronic tag. The electronic tag includes a chip and an antenna. The antenna is a directional antenna. The electronic tag provided by the invention can receive and transmit microwave signals directionally through the directional antenna; when applied to a road vehicle driving scenario, with the maximum radiation direction toward a vehicle radar, the electronic tag can receive microwave signals transmitted by the vehicle radar directionally and transmits an electronic code thereof directionally to the vehicle radar; the anti-interference performance and the effective availability of radiation energy are improved; and the road vehicle driving requirement is met.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification, in particular to an electronic tag. Background technique [0002] The electronic tag is the main component of the radio frequency identification (Radio Frequency Identification, referred to as RFID) system, and each electronic tag has a unique electronic code (identification, referred to as ID). The electronic tag mainly includes a chip and an antenna. The chip receives microwave signals through the antenna, and sends the electronic code stored in the chip through the antenna by virtue of the energy obtained by the induced current. [0003] figure 1 It is a schematic diagram of the structure of the existing electronic tags, such as figure 1 As shown, it includes a chip 1 in the center and an omnidirectional antenna composed of a rectangular ring 2 , a zigzag vibrator 3 and a rectangular vibrator 4 on both sides. The characteristic of this omnidirectional electronic tag i...

Claims

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Application Information

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IPC IPC(8): G06K19/077H01Q1/22
CPCG06K19/07775H01Q1/2225
Inventor 徐勇陈昆盛林伟李文锐邹禹勾晓菲刘鹏李丹
Owner EVERGRANDE FF INTELLIGENT AUTOMOTIVE GUANGDONG CO LTD
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