Intelligent omnidirectional surface equivalent circuit and reflection and transmission coefficient modeling method

Abstract

The invention discloses an equivalent circuit of an intelligent omnidirectional surface and a reflection and transmission coefficient modeling method. The equivalent circuit comprises a top layer metal pattern equivalent circuit, a top layer feeder equivalent circuit, a bottom layer feeder equivalent circuit and a bottom layer metal pattern equivalent circuit which are connected in parallel, and interlayer coupling admittance; one port of the top metal pattern equivalent circuit is connected with the first transmission line; one port of the bottom layer metal pattern equivalent circuit is connected with the second transmission line; the top layer metal pattern equivalent circuit, the top layer feeder equivalent circuit, the bottom layer feeder equivalent circuit and the bottom layer metal pattern equivalent circuit are two-port microwave networks which are connected in parallel with an RLC (Radio Link Control) circuit; when an incident wave is input to the top metal pattern equivalent circuit through the first transmission line, the first transmission line outputs a corresponding reflected wave, and the second transmission line outputs a corresponding refracted wave. According to the method, the fact that intelligent omnidirectional surface structure parameters influencing the reflection coefficient and the transmission coefficient and intelligent omnidirectional surface auxiliary channels are not reciprocal can be deduced.

Description

technical field [0001] The invention relates to the field of electronics, in particular to an equivalent circuit of an intelligent omnidirectional surface and a method for modeling reflection and transmission coefficients. Background technique [0002] As one of the key technologies of future wireless networks, an intelligent omni-directional surface (IOS) can change the wireless propagation environment, thereby improving the communication performance of users on both sides. However, in the existing literature on IOS, the reflection-refraction model adopted is too simplistic, which imposes some limitations on the case studies that can be analyzed and the conclusions that can be drawn from them. Specifically, in the existing research work, the relationship between the physical realization of IOS and the reflection and transmission coefficients is not explicitly given. Therefore, it is uncertain which structural parameters in the IOS can be optimized to obtain ideal reflectio...

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Problems solved by technology

In addition, existing models do not account for the effect of incident angle on reflection and transmission coefficients

Therefore, it is still unknown whether the IOS-assisted channel is reciprocal, which may lead to design challenges such as implementing channel estimation in TDD schemes

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