Our research group studies antennas, programmable metasurfaces and electromagnetic wave control at City University of Hong Kong. We explore millimeter-wave and terahertz technologies, reconfigurable intelligent surfaces, and spatiotemporal modulation for communications, sensing and imaging.
The group is led by Prof. Wu Gengbo, Assistant Professor in the Department of Electrical Engineering and a member of the State Key Laboratory of Terahertz and Millimeter Waves.
Learn about our Research, browse our Publications, or visit Google Scholar.
Prof. Wu received the College of Engineering’s Research Excellence Award 2026 for Junior Faculty in recognition of his impactful research achievements.
Sun Yiqing, co-supervised by Prof. Wu and Prof. C H Chan, received the Best Student Paper Award at IMWS-AMP 2026 in Cairns, Australia.
Awarded paper: “Power-Based Direction-Finding Enabled by a Null-Scanning Space-Time Leaky-Wave Antenna”.
Sun Yiqing received the award at IEEE IWS 2026 for her work on integrated sensing and communication with a space-time metasurface antenna, supervised by Prof. Wu Gengbo and Prof. C H Chan.
Awarded paper: “Integrated Sensing and Communication Enabled by a Space-Time Metasurface Antenna”.
Prof. Wu joined the judging panel for CityUHK EE’s Final Year Project Competition. Six shortlisted student projects were presented at the final on 12 May 2026.
Prof. Wu and collaborators published “High-dimensional multiplexing through vortex electromagnetic wave manipulation by space-time-coding metasurfaces” in Light: Science & Applications on 9 March 2026.
Prof. Wu and collaborators published “Bulk–spatiotemporal vortex correspondence in gyromagnetic zero-index media” in Nature on 14 May 2025, connecting metamaterial topology with spatiotemporal vortex generation.
A space-time holographic metasurface antenna was published in Science Advances.
CityUHK reported on a metasurface antenna with independently controlled frequency components.
Prof. Wu received RMB 300,000 from the NSFC Young Scientists Fund for research on real-time multi-harmonic imaging using spatiotemporally modulated metasurface antennas.
The project “Space-Time-Coding Metasurfaces for 6G Communications”, by Prof. C H Chan, Prof. Wu and Prof. Junyan Dai, received a Gold Medal with Congratulations of the Jury at the 49th Geneva exhibition.
CityU reported a universal metasurface antenna developed by Prof. C H Chan, Prof. Wu and collaborators. The Nature Communications study demonstrates control of amplitude, phase, frequency, polarization and radiation direction.
A team comprising Prof. C H Chan, Prof. Stella Pang, Dr Zhu Shuyan and Dr Wu Gengbo won a Gold Medal at the 48th Geneva exhibition for its terahertz metasurface antenna for 6G communications.
CityU reported tunable, 3D-printed terahertz meta-devices for steering focal spots in two and three dimensions. Dr Wu was a co-first author of the Science Advances study with Zhang Jingcheng and Dr Chen Mu-Ku.
CityU highlighted a space-time-coding antenna that controls beam direction, frequency and amplitude. Dr Wu and Dr Dai Junyan co-authored the Nature Electronics study, building on amplitude-modulated leaky-wave antenna concepts.
We welcome enquiries from prospective PhD students, postdoctoral fellows and visiting researchers.