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Microwave sensors based on symmetry properties and metamaterial concepts: A review of some recent developments (Invited paper)

机译:基于对称特性和超材料概念的微波传感器:近期发展的回顾(受邀论文)

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This paper presents some sensing strategies for microwave sensors based on symmetry properties and metamaterial-inspired resonators. Symmetry disruption is the key aspect in all the cases. The sensors consist of a transmission line loaded with one or two resonant elements in a symmetric configuration. Two types of sensors are considered: (i) coupling modulation sensors, and (ii) frequency splitting sensors. The former are useful to monitor spatial variables and are of particular interest for angular displacement and velocity sensors. Frequency splitting sensors can be used as comparators or for differential measurements of permittivities in dielectric samples. Examples of applications are reported.
机译:本文提出了一些基于对称特性和超材料启发的谐振器的微波传感器传感策略。在所有情况下,对称性破坏都是关键因素。传感器由一条传输线组成,该传输线负载有一个或两个对称配置的谐振元件。考虑了两种类型的传感器:(i)耦合调制传感器和(ii)频率分割传感器。前者可用于监视空间变量,并且对于角位移和速度传感器特别有用。分频传感器可用作比较器或用于介电样品中介电常数的差分测量。报告了应用示例。

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