Metamaterial inspired miniaturized SIW resonator for sensor applications

•A miniaturized cavity with high quality factor is obtained.•A negative mode of a substrate integrated waveguide (SIW) resonator is obtained by loading metamaterials.•The field distributions in the cavity are analyzed to study the operating mechanism. A planar substrate integrated waveguide (SIW) re...

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Bibliographic Details
Published in:Sensors and actuators. A. Physical. 2018-11, Vol.283, p.313-316
Main Authors: Yan, Sen, Bao, Juncheng, Ocket, Ilja, Nauwelaers, Bart, Vandenbosch, Guy. A.E.
Format: Article
Language:English
Subjects:
Binary system
Cavity resonators
Integrated circuits
Metamaterials
Q factors
Quality control
Sensors
Simulation
Substrate integrated waveguides
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Summary:•A miniaturized cavity with high quality factor is obtained.•A negative mode of a substrate integrated waveguide (SIW) resonator is obtained by loading metamaterials.•The field distributions in the cavity are analyzed to study the operating mechanism. A planar substrate integrated waveguide (SIW) resonator is proposed in this letter. By loading a metamaterial inspired structure in a short section of an SIW, a miniaturized cavity (0.263 × 0.184 × 0.0063 λ03 at 2.39 GHz) with high quality factor (272.5) is obtained. The resonant modes of the cavity and their corresponding field distributions are analyzed. A resonator prototype has been fabricated and tested. The measured results agree well with the simulated ones. This cavity resonator has huge potential in sensor applications. A binary solvent water alcohol mixture is used to verify the sensor concept.
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2018.10.013