Practical deployment of liquid-crystal metasurface reflectors
First written in FY2022. 2 of 3 entries say "Advanced", first in FY2024. Latest entry: FY2025.
No other company in this theme has enough history to compare yet.
- FY2025AdvancedAnnual report
「The company, KDDI Corporation, and KDDI Research, Inc. developed a portable liquid-crystal metasurface reflector for millimeter waves in the 28 GHz band that can change the direction and coverage of radio-wave reflections, and successfully demonstrated the delivery of millimeter-wave signals to their destination by reflecting them between outdoor buildings where such signals are difficult to reach.」
The liquid-crystal metasurface reflector progressed from confirming prototype characteristics to the demonstration-success and practical-application study stage, following a successful demonstration of delivering 28 GHz-band millimetre waves between buildings outdoors. - FY2024AdvancedAnnual report
「A prototype of the metasurface reflector developed by the Company was confirmed to reflect millimeter waves while allowing visible light to pass through.」
For the liquid-crystal metasurface reflector, development progressed from the 28 GHz-band development stage to the stage of verifying the characteristics of a prototype that transmits visible light while reflecting 5G millimeter waves. - FY2022First statedAnnual report
「In collaboration with KDDI Research, Inc., the Company became the first in the world to successfully develop a 28 GHz-band liquid-crystal metasurface reflector capable of directing radio-wave reflections in any direction, according to KDDI Research, Inc.」
Through joint research with KDDI Research, the company developed a liquid-crystal metasurface reflector that controls the direction of reflected signals in the 28 GHz band, and for the first time stated its policy of proceeding with demonstration testing.