A team of researchers led by engineers from the City University of Hong Kong (CityU) developed
After fabrication characteristics and structuretraditional antennas are almost impossible to change, the engineers explain. They used metasurfaces - special ultra-thin materials made up of many tiny meta-atoms - to overcome this limitation. By manipulating the current, one can switch meta-atoms between radiating and non-radiating states and control the antenna.
Antenna for 6G communication. Image: CityU
The metasurface antenna can use andmanage complex electromagnetic waves in the spatial and frequency domains using program control, the authors of the development note. It can generate a finely tuned beam with any desired radiation pattern.
Development harnesses the power of the metasurfaceantennas to focus their energy at one point with adjustable or fixed focal length. This allows unprecedented control over the direction, frequency and intensity of the signal beam. Such features are required for 6G wireless applications such as integrated ISAC systems, 3D holograms and eavesdropping.
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