Electromagnetic wave protecting versatile movies with near-zero reflection in the 5G frequency band
A researchstudy group led by Dr. Sang-Bok Lee and Byeongjin Park in the Department of Functional Composites at the Korea Institute of Materials Science (KIMS) prospered in establishing the world’s initially ultra-thin composite movie. This movie does not show electro-magnetic waves for 5G interaction however takesin more than 90% of it. The innovation can fix the secondary disturbance issue of electro-magnetic waves for 5G interaction frequency over 26 GHz.
Electromagnetic sound triggered by electronic parts interferes with other electronic systems and weakens their efficiency. To avoid this, a protecting product is utilized to block unenthusiastic electro-magnetic sound from the elements. Existing reflection-dominant protecting products that are extremely conductive, like metal and carbon, show more than 90% of electro-magnetic waves, so the real absorption rate is less than 10%. 5G interaction utilizes frequency bands greater than 26 GHz, which is 10 times greater than the frequency of the existing 3G/4G. As the secondary disturbance of electro-magnetic sound is more extreme with high frequency and brief wavelength, there is a high need for protecting products with high takingin ability.
The absorption-dominant protecting product produced by the researchstudy group is a magnetic product and polymer-mixed composite movie with conductive fibers stitched in a grid shape, which takesin electro-magnetic waves at 5G interaction frequencies. This product takesin more than 90% of electro-magnetic waves while it shows less than 1% of the wave. In addition, as this product is thin and versatile, there was no efficiency degeneration after it was wrinkled or folded.
The absorption-dominant electro-magnetic wave protecting product innovation can be utilized in different fields, consistingof smartdevices that usage 5G/6G interaction, base stations (small cells), vehicle radars, and low-orbit interaction satellite antennas. In specific, just 2 or 3 business in the United States, Germany, and Japan have wassuccessful in advertising the innovation as these products need state of the art product style innovations to program sophisticated efficiencies for the 5G/6G frequency bands.
Principal Researcher Sang-Bok Lee, who led the researchstudy, stated, “The product we established utilizes a conductive grid to present a brand-new principle of an ultra-thin product that takesin most of the electro-magnetic waves without showing them. If the innovation is used to cordless interaction gadgets such as smartdevices, as well as to vehicle radars, the dependability of self-governing driving will be considerably enhanced.”
The researchstudy paper was released in the Journal of Materials Chemistry A.
The researchstudy group is goingover innovation transfer for mass production of absorption protecting product with numerous business. They are likewise performing evenmore researchstudy on the product’s application to the ADAS radar systems.
More info: Seung Han Ryu et al, Electromagnetic wave protecting versatile movies with near-zero reflection in the 5G frequency band, Journal of Materials Chemistry A (2022). DOI: 10.1039/d1ta10065c
Provided by National Research Council of Science & Technology
Citation: Electromagnetic wave protecting versatile movies with near-zero reflection in the 5G frequency band (2022, March 25) obtained 26 March 2022 from https://techxplore.com/news/2022-03-electromagnetic-shielding-flexible-near-zero-5g.html
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