Metal electronic tag antenna

Abstract

The invention discloses a high-gain and small-sized metal electronic tag antenna, which is formed by combining a microstripe antenna and a dipole antenna, wherein the microstripe antenna consists of a ground plate (1) and a main radiator (2), and the dipole antenna consists of a first arm (2) and a second arm (3); the main radiator (2) of the microstripe antenna and the first arm (2) of the dipole antenna share the same conductor; and a direct current short circuit is formed between the ground plate (1) of the microstripe antenna and the second arm (3) of the dipole antenna. The structure of the antenna comprises a bottom layer, a middle layer and a top layer, wherein the bottom layer is the ground plate (1), the top layer comprises the two arms of the dipole antenna, the middle layer comprises an FR4 substrate material (4) and a through hole (7), the substrate material (4) is used for filling a gap between the bottom layer and the top layer, and the through hole is used for the electric connection of two solid bodies on two sides of the substrate material (4). The antenna intelligently combines the microstripe antenna and the microstripe antenna and realizes the direct attachmentof the electronic tag on a metal surface.

Description

Technical field [0001] The invention belongs to the technical field of microwave communication, and particularly relates to an anti-metal electronic tag antenna. Background technique [0002] Metal-resistant electronic tags, referred to as metal tags, are a type of tag with a special application environment. This type of label is usually attached to the outer metal surface of other objects. The electronic label consists of the inner inlay of the label and the outer package of the inlay, such as a plastic case. The inner Inlay of the tag is usually composed of an antenna and a chip. Since current chip suppliers can provide a wide range of electronic tag chips for tag manufacturers around the world, the core competitiveness of electronic tags is concentrated on antennas. [0003] The current anti-metal electronic tag antennas are generally dipole antennas in the ultra-high frequency band. A dipole antenna is usually composed of two arms of equal length, and the material of the ante...

AI Technical Summary

Problems solved by technology

Its disadvantages include: large thickness, not less than 5mm; large length, mostly more than 100mm, mostly about 150mm, and the working frequency is 900MHz frequency band

It is precisely because of the large size and low gain of the anti-metal electronic tag antenna that it is very inconvenient to use, thus limiting the application of metal tags in some fields, such as laptop management systems

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