An SIW Resonator Sensor for Liquid Permittivity Measurements at C Band

Author

Changjun Liu ; Fan Tong

Author_Institution

Sch. of Electron. & Inf. Eng., Sichuan Univ., Chengdu, China

Volume

25

Issue

11

fYear

2015

Firstpage

751

Lastpage

753

Abstract

This letter presents a novel substrate integrated waveguide (SIW) resonator sensor that is specifically designed to measure the complex permittivity of liquids. The resonant characteristics of the sensor are influenced by liquids through a slot opened on the top plane. The inverse problem of obtaining permittivity is solved with artificial neural network. Experiments were performed with an SIW resonator sensor designed at C band. Experimental data were reported and they agreed well to the reference values. The sensor is simple and low cost, which may be applied to permittivity measurements in applications at the industrial, scientific and medical (ISM) frequencies.

Keywords

computerised instrumentation; inverse problems; microwave detectors; microwave measurement; microwave resonators; neural nets; permittivity measurement; substrate integrated waveguides; C band; ISM band; SIW resonator sensor; artificial neural network; industrial scientific and medical; inverse problem; liquid permittivity measurement; resonant characteristics; substrate integrated waveguide; Artificial neural networks; Liquids; Permittivity measurement; Q-factor; Resonant frequency; Artificial neural network (ANN); complex permittivity; microwave industrial application; resonator; substrate integrated waveguide (SIW);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2015.2479851

Filename

7287806