A Novel Amplitude Modulation Architecture via Time-Varying Programmable Metasurface for Wireless Communication Systems

IEEE Access

Liwen Chen¹  Jing Chen¹  Qing Weng¹  Jian-Feng Gu² 

[1] Key Laboratory of Automotive Electronics and Electric Drive Technology, Fujian University of Technology, Fuzhou, China;Moonshot Health Inc., Montr&x00E9;

关键词: Time-varying programmable MS;    amplitude modulation;    FPGA;    quasi-optical;    pentagonal array;   

DOI  :  10.1109/ACCESS.2020.2988769

来源: DOAJ

【 摘 要 】

Different from the traditional wireless communication systems, where both amplitude and phase components are used to provide a form of modulation, almost all of space time-modulated matesurface (MS) currently reported are modulated by phase components. In this paper we propose a new architecture of time-varying modulated MS based on two features. First, inspired by the idea of beamforming-like techniques that different digital sequences are added to the MS, in this way, the amplitude can be changed rapidly for modulation by holding the constant phase. Here, a pentagonal array-based MS is designed to achieve amplitude modulation (AM) by the use of on-off field programming gate array (FPGA) hardware. Second, a quasi-optical measurable scheme in the near-filed is used to show the phenomena and detect the measurements. To verify the ideas mentioned above, the simulations and measurements are carried out.

【 授权许可】

Unknown