Positioning and Electromagnetic Radiation Test Based on Induced Field

Due to the possibility of controlling electromagnetic waves, intelligent metasurfaces have attracted considerable attention. With the development of wireless communication, the demand for accurate positioning and electromagnetic radiation testing is increasing. This paper proposes an intelligent transmission surface (ITS) that can achieve complete 2π full phase coverage, and introduce an induced field localization method based on it, the method fully considers the spherical wavefront characteristics of the induced field and achieves accurate localization. Traditional methods of electromagnetic radiation measurement often require complex instruments and time-consuming data processing, which limit the real-time measurement and analysis of the induced field, a fast measurement method of induced field electromagnetic radiation based on ITS is also proposed. ITS can be adjusted to achieve optimal transmission and modulation of electromagnetic waves so as to realize the rapid capture and measurement of electromagnetic radiation. Finally, this paper also reveals the conversion law between the induced field and the transmitted far field. Revealing this law helps us to better understand the nature and propagation mechanism of the induced field, which is of great importance for the localization of the induced field and the fast measurement of electromagnetic radiation.