How to design a radio frequency laser holographic anti-counterfeiting label

How to design a radio frequency laser holographic anti-counterfeiting label

Laser holographic anti-counterfeitingIt is a relatively popular anti-counterfeiting technology. It uses holographic mapping technology and embossed copy technology, combined with plate-making technology such as laser film and 3D optical miniaturization, to produce label products with high anti-counterfeiting performance. With the continuous development of science and technology, many emerging technologies have also been applied to the production of anti-counterfeiting labels. Among them, manufacturers have combined video technology and laser holographic anti-counterfeiting to develop unique label products.

If a label with laser holographic anti-counterfeiting is to be perfectly combined with radio frequency technology, a wireless antenna must be designed first. Because in the radio frequency system, the signal transmission between the tag and the reader needs to be transmitted through the magnetic field generated by the antenna. At present, the electromagnetic field can be divided into the non-radiation field radiation near-field area and the radiation far-field area. The diameter of the wireless antenna affects the size of the electromagnetic field area. Manufacturers also need to study the energy transfer relationship between the reader and the tag to find out which distance parameters affect tag identification. According to the data of these analysis and research, the design and production process of making labels are determined. The label film generated by the laser holographic anti-counterfeiting is not conducive to the energy conversion of the reader and the wireless antenna, thereby affecting the reading of the label data. Therefore, manufacturers need to adjust the distance between the tag antenna and the holographic film to find a more favorable position.

The inside of the radio frequency laser holographic anti-counterfeiting label consists of three parts, namely the feeding point, the metal ground and the radiator. No matter which part it is, its thickness will affect the anti-counterfeiting performance of the entire label, so thinner materials should be used as much as possible. Usually the thickness of the antenna will be controlled within 10μm, and the thickness of the laser holographic anti-counterfeiting label film will be controlled within 35nm. Such a device makes the label look beautiful and not heavy.