Analysis of the Sea Surface Influence on the Shape of Microwave Spiral Antenna Radiation Pattern

Sinitsyn, Mikhail E.; Podstrigaev, Alexey S.; Smolyakov, A.; Давыдов, В. В.

doi:10.1109/adminc47948.2019.8969319

Cited by 4 publications

(1 citation statement)

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“…The influence of water surface on the radiation pattern of a spiral antenna operating in the S-, C-, X- and Ku-bands was investigated by [ 19 ]. A model of the spiral antenna was developed in Computer Simulation Technology (CST) Suite and the sea water was modelled by placing a perfect electric conductor (PEC) material under the antenna perpendicular to its aperture.…”

Section: Introductionmentioning

confidence: 99%

Design, Implementation, and Measurement Procedure of Underwater and Water Surface Antenna for LoRa Communication

Dala

Arslan

2021

Sensors

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There is an increasing interest in water bodies, which make up more that seventy percent of our planet. It is thus imperative that the water environment should be remotely monitored. Radio frequency (RF) signals have higher bandwidth and lower latency compared to acoustic signals. However, water has high permittivity and conductivity which presents a challenge for the implementation of RF technology. In this work, we undertook a novel design, fabrication, measurement and implementation of an antenna for a sensor node with dual ability of underwater and water surface long range (LoRa) communication at 868 MHz. It was observed that the antenna’s performance deteriorated underwater without −10 dB effective bandwidth between 668 MHz and 1068 MHz. The introduction of an oil-impregnated paper buffer around the antenna resulted in an effective 400 MHz bandwidth within the same frequency span. The sensor node with the buffered antenna was able to achieve a distance of 6 m underwater and 160 m over water surface communication to a data gateway node. The sensor node without the buffered antenna was only able to achieve 80 m over water surface communication. These experimental results show the feasibility of using the LoRa 868 MHz frequency in underwater and water surface communication.

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Section: Introductionmentioning

confidence: 99%