49 Papers
79 Citations
He Wang is an academic researcher from Beijing Institute of Technology. The author has contributed to research in topics: Computer science & Circular dichroism. The author has an hindex of 5, co-authored 24 publications.
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Papers
Realizing high comprehensive energy storage performance in lead-free bulk ceramics via designing an unmatched temperature range
Zetian Yang,Hongliang Du,Li Jin,Qingyuan Hu,He Wang,Yongfeng Li,Jiafu Wang,Feng Gao,Shaobo Qu +8 more
TL;DR: In this paper, a new strategy was proposed to tailor the temperature region between the temperature corresponding to the maximum dielectric permittivity and the Burns temperature (TB) of relaxor ferroelectrics to room temperature via composition optimization, to explore lead-free bulk ceramics with high comprehensive energy storage properties.
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Programmable Coding Metasurface Reflector for Reconfigurable Multibeam Antenna Application
Weihan Li,Tianshuo Qiu,Jiafu Wang,Lin Zheng,Yao Jing,Yuxiang Jia,He Wang,Yajuan Han,Shaobo Qu +8 more
TL;DR: Reflect beam number reconfigurability of such metasurfaces can be readily used as planar reflector of antennas and may find applications in wireless communications.
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Vortex beam generated by circular-polarized metasurface reflector antenna
He Wang,Yongfeng Li,Yajuan Han,Ya Fan,Sai Sui,Hongya Chen,Jiafu Wang,Qiang Cheng,Tie Jun Cui,Shaobo Qu +9 more
Abstract: Vortex beams with orbital angular momentum (OAM) can remarkably increase the channel capacity without signal process, thus attract more and more attention of researchers, and various novel methods of generating vortex beams blow out. In this work, a circular-polarized vortex beam reflector antenna was proposed via integrating vortex beam generated metasurface and beam focusing metasurface. The antenna consists of the metasurface reflector and a feed helical antenna. The phase distribution of the metasurface combines the OAM phase distribution and the beam focusing required phase distribution which is used to generate vortex beam from a point source. The measured results agree well with the simulated results, and both demonstrate that the reflector antenna can generate a vortex beam with OAM from 12 GHz to 18 GHz, and the realized gain is 22.4 dB at the center frequency 15 GHz.
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Tunable Frequency Selective Surface With Angular Stability
TL;DR: In this paper, a two-layer structure composed of an array of wire grid and a split square ring loaded with two varactor diodes is proposed to achieve angular stability at 4.25 GHz.
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