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ThinkMind // ALLSENSORS 2018, The Third International Conference on Advances in Sensors, Actuators, Metering and Sensing // View article allsensors_2018_8_20_78006


Scattering Parameters Measurements with the Microwave Transmittance Technique using a Microstrip Patch Antennas, as Non-invasive Tool for Determination of Soil Moisture.

Authors:
Paulo Sergio de Paula Herrmann
Felipe Nieves Marques Porto
Viktor Sydoruk

Keywords: microwave technique; transmittance; soil moisture; microstrip patch antennas; rhizobox

Abstract:
Interactions of soil moisture with plant’s root system are very important for plant growth. This work presents a non-invasive sensor-based instrument for determination of volumetric soil moisture (θV), i.e., a microwave system based on transmittance of electromagnetic waves in the frequency range close to 5.0 GHz which uses micro-strip patch antennas. A Vector Network Analyzers (VNAs) was used to obtain the S-parameters. A transmission system, with micro-strip patch antennas was developed. The result of this attenuation is in the frequency domain. The antennae were designed to be a resonant microstrip antenna. The antennas were placed on both sides of a rhizobox, which allows for non-invasive measurements of soil moisture in the box. The attenuation (S12(dB)) was used to measure the effect of temperature, the different kinds of soil, sensitivity, reproducibility and repeatabilityin this system. In this work, we present quantitative results of soil moisture in rhizobox. The microwave technique, using microstrip patch antennas, is a reliable and accurate system, and showed very promising potential applications for rhizobox-based investigations of root performance.

Pages: 89 to 94

Copyright: Copyright (c) IARIA, 2018

Publication date: March 25, 2018

Published in: conference

ISSN: 2519-836X

ISBN: 978-1-61208-621-7

Location: Rome, Italy

Dates: from March 25, 2018 to March 29, 2018

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