Plane X-shaped slit electronic tag

An electronic label and slot technology, applied in the field of microwave communication, can solve problems such as difficulty and difficulty in adjusting the impedance of slot antennas

Inactive Publication Date: 2017-06-09
华大恒芯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Slot antennas are widely used in the design of planar anti-metal antennas due to the radiation characteristics of the magnetic flux element. The reflected wave generated by the "mirror magnetic flux" is in phase with the incident wave. The impedance adjustment of the antenna is very difficult. The common matching methods include waveguide feeding, nested slot matching, coupling loop feeding, etc., but it is still relatively difficult.

Method used

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  • Plane X-shaped slit electronic tag
  • Plane X-shaped slit electronic tag
  • Plane X-shaped slit electronic tag

Examples

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Embodiment Construction

[0018] The specific implementation examples described here are only used to explain the present invention, not to limit the present invention.

[0019] refer to figure 1 In this embodiment, the planar X-shaped slit electronic tag includes an antenna 10, a chip 20 and a substrate 30, the substrate 30 is arranged in a rectangular shape for accommodating the antenna 10 and the chip 20, wherein the antenna 10 matches the chip 20, The antenna 10 includes a radiating surface 11 and a slit composed of an arm one 121 and an arm two 122, the radiating surface 11 is located on the surface of the substrate 30, and the slit 12 is provided with two arms, the arm one 121 and the arm two 122 It is arranged symmetrically up and down and left and right. The first arm 121 and the second arm 122 intersect to form an "X shape", the intersection point is located at the center of the substrate, and the chip 20 is located at the intersection point of the first arm 121 and the second arm 122 .

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Abstract

The invention relates to the field of RFID, and provides a plane X-shaped slit electronic tag. The tag comprises an antenna, a chip and a substrate, wherein the substrate is rectangular, and accommodates the antenna and the chip. The antenna is matched with the chip. The antenna comprises a radiation surface and a slit, wherein the radiation surface is located on the surface of the substrate. The slit is provided with two arms which are interlaced with each other to form an X shape, and the two arms are in left-right and up-down symmetry, and the intersection point of the two arms is located at the center of the substrate. The chip is located at the intersection of the two arms. According to the invention, a novel design method for the slit electronic tag is provided, and the method can conveniently adjust the impedance of the antenna, and achieve the conjugate matching with the chip. The chip is fixed on a base material through solidification, and can be pasted on the surface of an object during utilization. Because of the radiation characteristics of a magnetic current element of a slit antenna, the electronic tag is especially suitable for a windshield with a metal explosion-proof film, an object surface coated with metal paint, and a human body.

Description

[0001] Technical field: [0002] The invention relates to a flat X-shaped slot electronic label, which belongs to the technical field of microwave communication and is suitable for radio frequency identification within the frequency range of 800MHz to 1200MHz [0003] Background technique: [0004] With the development of RFID in recent years, electronic tags have been widely used in many fields such as logistics, retail and transportation, which have effectively improved management efficiency and greatly saved labor costs. In some metal-like environments, such as car windshields with metal explosion-proof film, surfaces coated with metal spray paint, human body, animal surfaces, etc., due to the mirror effect, the reflected wave and the incident wave form a standing wave. When the electric field is zero, ordinary antennas cannot obtain energy, and the radiation efficiency is reduced or cannot be read. Microstrip antennas can easily solve this problem, but sometimes due to cos...

Claims

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Application Information

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IPC IPC(8): G06K19/077
Inventor 马纪丰赵军伟
Owner 华大恒芯科技有限公司
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