Novel antenna tech developed for 6G communications

Researchers from the City University of Hong Kong have developed a novel metasurface antenna that is capable of simultaneously generating and controlling multiple frequency components through software. The advancement could enhance the efficiency and capabilities of wireless communication systems, particularly for the upcoming 6G networks.

Traditional antennas are typically fixed in their capabilities. To enhance antenna flexibility and control, the researchers experimentally demonstrated a novel antenna concept called a “synthesis moving envelope”. This technology allows antennas to simultaneously generate arbitrary harmonic frequencies and their wave properties to be controlled through software manipulation.

The technology has potential applications in next-generation large-capacity and high-security information systems, real-time imaging and wireless power transfer. The antenna can simultaneously transmit multiple signals to users in different directions, substantially increasing channel capacity. Professor Chan Chi-hou, Chair Professor of the Department of Electrical Engineering, said the proposed synthesis approach promotes the metasurfaces’ spectral controllability to a new level.

“The unparalleled frequency controllability, together with its highly straightforward coding strategy (1-bit), sideband-proof and potential for on-chip integration, provides a proposed metasurface antenna that goes beyond existing technologies, offering promising potential in wireless communications, cognitive radar, integrated photonics and quantum science,” said Professor Wu Gengbo from the Department of Electrical Engineering.

The research findings have been published in the journal Nature Communications.

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