A significant advance in antenna design with implications for sixth generation (6G) networks has been reported by researchers at the City University of Hong Kong (CityUHK). A study published in Nature Communications describes a new metasurface antenna that is capable of generating and controlling multiple frequency components simultaneously through software, which could potentially revolutionize wireless communication systems.
Led by Professor Chan Chi-Hou, Chair of the Department of Electrical Engineering at CityUHK, the research introduces a concept called a “synthetic moving-envelope” metasurface. The design enables the antenna to independently manage arbitrary harmonic frequencies and waveform properties, a feat not previously demonstrated. Reports suggest that this innovation could increase data transmission capacity and provide advanced functionality for real-time imaging, wireless power transfer, and the secure communications systems needed for future networks.
Main Features and Applications
According to the study, the technology allows simultaneous transmission of multiple signals in different directions, thereby increasing channel efficiency. According to the research team, this capability is of particular importance for 6G networks, where the integration of communications and sensing technologies is critical.
The antenna’s ability to achieve spectral control through a simple coding strategy was highlighted by Professor Chan, who also serves as the Director of the State Key Laboratory of Terahertz and Millimeter Waves. Professor Wu Gengbo, another researcher involved in the project, indicated that the system’s 1-bit coding approach and sideband-proof design provides compatibility with on-chip integration. Potential uses could extend beyond communications to include cognitive radar, integrated photonics, and even quantum science.
One step towards 6G network
As noted in the report, this development represents a departure from traditional fixed-parameter antennas, opening up possibilities for more dynamic and efficient systems. While practical applications remain under exploration, the innovative approach of the metasurface antenna is seen as an important step toward enabling the advanced communications demands of 6G.
