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基于PIN二极管形成的硅基固态等离子体通道天线由于具有多功能、超宽带、隐身等优良特性,而成为国内外研究的热点。简要阐述了此种通道的形成机理,通过理论推导获得了通道中的自由载流子浓度与通道等效折射率、自由载流子浓度与PIN结构参数和外加激励之间关系的解析解。理论研究发现,在一定条件下通道可以获得浓度高且均匀的带电粒子分布,并能够有效地传输高频电磁波信号。三维有限元法计算结果表明,当多个这样的等离子通道以一定的间隔和方式排列后,其可以有效地作为天线来接收和传输电磁波。这些系统的理论研究将进一步促进人们对硅基固体等离子通道的理解,为此类天线的设计和加工提供理论指导。
The silicon-based solid-state plasma channel antenna formed based on PIN diode has become a hot research field at home and abroad because of its excellent characteristics of multi-function, ultra-wideband and stealth. The forming mechanism of such channel is briefly described. The analytic solution of the relationship between free carrier concentration and channel equivalent refractive index, free carrier concentration, PIN structure parameters and applied excitation is derived theoretically. Theoretical studies have found that under certain conditions, the channel can obtain high concentration and uniform distribution of charged particles, and can effectively transmit high frequency electromagnetic wave signals. The results of three-dimensional finite element analysis show that when a plurality of such plasma channels are arranged at a certain interval and manner, they can effectively receive and transmit electromagnetic waves as antennas. The theoretical research of these systems will further promote the understanding of solid-state silicon-based plasma channels and provide theoretical guidance for the design and processing of such antennas.