Dipole Antenna for Underwater Radio Communications

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Date
2016
Authors
Sofia Isabel Inácio
Mário Rui Pereira
Hugo Miguel Santos
Luís Manuel Pessoa
Filipe Borges Teixeira
Mário Jorge Lopes
Oluyomi Aboderin
Henrique Salgado
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Abstract
The radiation characteristics of a dipole antenna when immersed in both fresh and seawater are assessed through simulation and experimental work. Simulations show that the antenna's bandwidth and radiation pattern change with the properties of the medium where it is placed, namely the conductivity of the medium. Two dipoles antennas with current baluns were built and tested experimentally in freshwater. The tests included the measurement of the insertion loss between two identical dipole antennas and their radiation pattern. The results obtained show a good agreement between the simulation and experimental results.
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