SSPP-SIW Integrated Microwave Bandpass Filtering Sensor for 3-D Printed Material Real-Permittivity Characterization

IF 2.2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Sensors Letters Pub Date : 2025-07-17 DOI:10.1109/LSENS.2025.3590238

Xin Zhou;Liang Yue;Chaoyu Jiang;Kam-Weng Tam;Gang Zhang;Zhuowei Zhang;Chi-Hou Chio;Dong Pan;Tuan Guo

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引用次数: 0

Abstract

This work presents a novel microwave sensor device for selec- tive quantification of material permittivity (ϵ_r′) through spoof surface plasmon polariton (SSPP)-substrate integrated waveguide (SIW) integration. The proposed sensor innovatively converts dielectric property variations into measurable microwave signals via a unique transduction mechanism: passband bandwidth modulation directly controlled by ϵ_r′. Specifically, the upper cutoff frequency shift in the SSPP-SIW sensor device serves as the sensing parameter, establishing a direct correspondence (399.3 MHz/unit ϵ_r′) between electrical response and material dielectric properties. Compared to conventional permittivity measurement techniques, this design achieves enhanced sensitivity through SSPP field confinement while maintaining compatibility with standard microwave systems. Experimental validation demonstrates dual-functional operation as both sensor and filter, with particular effectiveness in real-time dielectric characterization of 3D-printed microwave components.

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用于三维打印材料实介电常数表征的集成微波带通滤波传感器

本文提出了一种新的微波传感器装置，通过欺骗表面等离子激元(SSPP)-衬底集成波导（SIW）集成，用于选择性定量材料介电常数（ϵr '）。该传感器创新地将介电特性变化通过独特的转导机制转换为可测量的微波信号：通过ϵr直接控制的通带带宽调制。具体来说，SSPP-SIW传感器器件中的上截止频移作为传感参数，在电响应和材料介电性能之间建立了直接对应关系（399.3 MHz/单位ϵr’）。与传统的介电常数测量技术相比，该设计通过SSPP场约束实现了更高的灵敏度，同时保持了与标准微波系统的兼容性。实验验证证明了作为传感器和滤波器的双重功能操作，在3d打印微波元件的实时介电特性中具有特别的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Sensors Letters Engineering-Electrical and Electronic Engineering

CiteScore

3.50

自引率

7.10%

发文量

194