Scholarlink

A planar, low-cost, and flexible microwave sensor is introduced, utilizing an electromagnetic metasurface of frequency-selective surface (FSS) type. This sensor concept relies on altering the inter-plate capacitance of the electric inductive-capacitive (ELC) resonators forming the FSS periodic array grid. When a material with varying electrical characteristics is placed between the plates, changes in capacitance and inductance lead to a shift and attenuation of the resonant frequency that are exploited as encoding mechanism for the sensing functionality. The metasurface approach offers the advantage of enhancing the sensor's radar cross section (RCS), which in turn improves either the reading distance or the strength of the sensor response.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Microwave Sensing of Humidity with a Transparent and Flexible Electromagnetic Metasurface

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • G. Marchi,
  • L. Graziani,
  • V. Mulloni,
  • A. Gaiardo,
  • M. Valt,
  • T. Facchinelli,
  • E. Negri,
  • M. Donelli,
  • A. Galli,
  • L. Lorenzelli

摘要

A planar, low-cost, and flexible microwave sensor is introduced, utilizing an electromagnetic metasurface of frequency-selective surface (FSS) type. This sensor concept relies on altering the inter-plate capacitance of the electric inductive-capacitive (ELC) resonators forming the FSS periodic array grid. When a material with varying electrical characteristics is placed between the plates, changes in capacitance and inductance lead to a shift and attenuation of the resonant frequency that are exploited as encoding mechanism for the sensing functionality. The metasurface approach offers the advantage of enhancing the sensor's radar cross section (RCS), which in turn improves either the reading distance or the strength of the sensor response.