Tan, Yunhua

Associate Professor

Research Interests: Computational electromagnetics and its application, terahertz imaging and detection

Office Phone: 86-10-6275 4409-4

Email: tanggeric@pku.edu.cn

Tan, Yunhua is an associate professor in the Department of Electronics, School of EECS. He obtained his B.S., M.S. from Wuhan University in 1995,1998 respectively, and Ph.D. from Peking University in 2003. His research interests include computational electromagnetics and its application, satellite navigation, terahertz imaging and detection.

Dr. Tan has published more than 50 research papers on journals and conferences, such as Scientific Reports, IEEE Trans. Geosci. Remote Sens., ACS Photonics, MOTL, etc. His projects cover NSFC, National Science and Technology Major Project, 863 project, etc. His research achievements are summarized as follows:

1)  Applied computational electromagnetics: One major research topic is to model the passive and active microwave remote sensing of snow, using dense media radiative transfer (DMRT) theory with multiple-scattering effects and rough surface boundary conditions. His other studies include the channel analysis for helicopter satellite communication, coated material to reduce the RCS of PEC object, conformal antennas, EMC optimization for the electrical large aircraft, etc.

2)  Satellite navigation: He focused on the compatibility and interoperability between different satellite navigation systems, and developed new types of interoperable receivers based on Beidou, GPS and Galileo. Key technologies of precise point positioning have also been studied by him, such as the adaptive Kalman filtering in dual-frequency navigation using carrier phase.

3)  Terahertz imaging and detection: For the potential use of vortex fields in imaging, he proposed efficient approaches to generate vector-vortex beams based on metasurface. Frequency-controlled beam scanning based on holographic metasurface was also developed. Recently his research mayors in the THz far-field and real time super-resolution imaging with the resolution up to nanometers range, where three subwavelength superlenses are designed respectively by graphene, subwavelength metallic grating and metasurface.