RF Coils Characterization in Soil for Wireless Soil Sensing Applications | IEEE Conference Publication | IEEE Xplore

RF Coils Characterization in Soil for Wireless Soil Sensing Applications


Abstract:

This paper presents the characterization results of RF coils in loamy soil with a goal to develop low-cost, long-life, wireless, in-situ sensing technologies for monitori...Show More

Abstract:

This paper presents the characterization results of RF coils in loamy soil with a goal to develop low-cost, long-life, wireless, in-situ sensing technologies for monitoring soil health to ensure future sustainable agriculture. Two types of RF coil exhibiting 6 cm-Φ / 9-turn and 12 cm-Φ / 9-turn are employed for the study. The characterization results reveal that coils maximum quality factor takes place around 1 MHz limited by the loamy soil loss. A small gap on the order of 1-2 cm between a coil and surrounding soil can help improve the quality factor significantly. Wireless power transfer efficiency estimation reveals that a sufficient amount of power can be transferred across a soil depth of 30 cm to energize an underground wireless soil sensing network. Further optimized designs are expected to achieve an enhanced performance and extended power transfer distance underground.
Published in: 2020 IEEE SENSORS
Date of Conference: 25-28 October 2020
Date Added to IEEE Xplore: 09 December 2020
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ISSN Information:

Conference Location: Rotterdam, Netherlands

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