- For 5G/6G communication -
Transparent & Flexible Radio Wave Reflection Film
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- Transparent & Flexible Radio Wave Reflection Film
An innovative thin transparent and flexible film that can be attached to the any surface and can reflect radio waves in the sub6 - mm wave - THz range
As radio waves become higher frequency, such as 5G and 6G, these waves will become harder to reach due to their high directivity and easy attenuation.
This transparent film can be applied anywhere, without power supply, without spoiling the surface’s appearance, to improve the communication environment
It can be applied to walls, windows, wall-hung paintings, clocks, curved surfaces, pillars, etc.
It is very easy to apply to any irregularly shaped object, so just like pasting a poster.
It can also be easily reapplied, highly durable, and once installed, completely maintenance-free
It is an innovative product that eliminates network users’ stress, supports IoT transformation, and significantly improves communications infrastructure.
By combining the special metamaterial layer inside, which was obtained through collaboration with our technical partner Metamaterial Inc. (headquartered in Canada), with Sekisui Chemical's film processing technology, the new product is highly durable and transparent, yet diffusely reflects only radio waves, eliminating blind spots in communication
It has reflection characteristics equivalent or superior to those of metallic materials used in antennas, and is highly effective in high-frequency radio waves used in 5G and future 6G
We conducted a demonstration experiment on our Transparent and Flexible Radio Wave Reflection Film at Tokyo Metropolitan University, which boasts one of the largest-scale local 5G environments in Japan.
- 1st
- 2nd
Minami-Osawa Campus Radio Wave Area Map
*Tokyo Metropolitan University Web site
(*Jump to Tokyo Metropolitan University website)
Radio wave environment changes in radio wave signal blind slots by installing reflective film
Frequency : sub6 & mm wave
- No significant difference in radio wave strength by changing the diameter of the roll shape
- Rolled bending expands the reflective diffusivity and further helps to eliminate blind spots
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Installation of reflective film is expected to expand the radio wave coverage area
< 2nd > December 2023
Details
Evaluation of the radio wave reflectivity of the film in a cone shape
- Cones with cone-shaped and cylindrical films were installed.
- Eighteen patterns were created by varying the height and number of cones, and evaluated.
- Frequency : sub6
- Evaluation Location (Outdoor) : Areas in front of and around the Information Processing Facility
Film Shape
- Height
- Short (420 mm)
Medium (620 mm)
Tall (900 mm)
- Number of cones
- 1 to 3 for each shape
Without reflector-100~-105dBm
With reflector-85~-100dBm
- An improvement in the radio wave environment was confirmed, despite the lower intensity of radio waves caused by increased radio wave diffusion compared to that on a flat plate.
- When using the reflection film on the flat surface, careful positioning was needed to ensure proper radio wave reflection. Cone-shaped and cylindrical films, on the other hand, did not require such precise positioning.
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In any shape, the film improves the radio wave environment and does not require position adjustment for proper radio wave reflection on a flat plate. It can be easily installed anywhere, improving workability.