Antenna design for underwater radio communications

Inacio, S. I.; Pereira, M.; Santos, Hugo; Pessoa, L. M.; Teixeira, Filipe; Lopes, Mário; Aboderin, O.; Salgado, H. M.

doi:10.1109/oceansap.2016.7485705

Cited by 20 publications

(12 citation statements)

References 11 publications

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“…The behaviour of the two antennas are similar in this respect, as the plots seemingly overlap at the considered frequencies. Considering a transmission system operating in this medium, with a receiver having a sensitivity of 90 dBm and a transmitter with an output power of 10 dBm, the maximum expected range of operation is around 7 m at 25 MHz and 6.4 m at 40 MHz, this is similar to the results presented in [10]. In all, the dipole with coily parasitic element yielded higher performance than the one with ordinary parasitic element.…”

Section: Simulation Resultssupporting

confidence: 82%

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Wideband dipole antennas with parasitic elements for underwater communications

Aboderin

Pessoa

Salgado

2017

OCEANS 2017 - Aberdeen

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Propagation of underwater electromagnetic signals for real-time transmission and reception of data gathered during a survey mission between an Autonomous Underwater Vehicle (AUV) and underwater sensor nodes or a docking station, continues to generate a lot of interest worldwide. To this end, underwater antennas will play a significant role in ensuring good data rates and propagation distances for various underwater applications. In this paper, the performance of two dipole antennas with different parasitic elements is assessed through simulation for usage in fresh water and operating in the High Frequency (HF) band. The antennas were designed in FEKO, an electromagnetic simulation software and their performance is assessed in terms of bandwidth, directivity and antenna-to-antenna distance. The results obtained show that these antennas exhibit wide bandwidth, which is important to achieve high data rates. Experimental results of the reflection coefficient of the fabricated antenna measured in fresh water are given that agree well with the simulation results.

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Section: Simulation Resultssupporting

confidence: 82%

“…6. Here, it seen that the pattern shows that the present of parasitic changed the shape of the plane when compared with the results obtained and presented in [10]. These are important results both for the data rates and the propagation distance.…”

Section: Simulation Resultssupporting

confidence: 73%

Wideband dipole antennas with parasitic elements for underwater communications

Aboderin

Pessoa

Salgado

2017

OCEANS 2017 - Aberdeen

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“…In terms of directivity, the collinear J-pole and the super J-pole have higher directivity than the J-pole antenna. These are very encouraging results when considering usage of these antennas in AUVs as the achievable bandwidth and directivity are higher than what is obtained for when the loop and the dipole antennas [12]. The simple circuit showing the addition of the capacitor as calculated, to cancel the inductive load is presented in Fig.…”

Section: A Fresh Watermentioning

confidence: 68%

“…Both the E-plane and the H-plane confirm that the three antennas radiated mainly in one direction in this medium. This is an important advantage over the loop and the dipole antennas that are bidirectional when simulated in this medium [12]. The implication of this is that the three antennas radiates all their respective powers in one direction only.…”

Section: B Sea Watermentioning

confidence: 99%

Analysis of J-Pole antenna configurations for underwater communications

Aboderin

Inacio

Santos

et al. 2016

OCEANS 2016 MTS/IEEE Monterey

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The capability of relatively high-speed short-range communications of Autonomous Underwater Vehicles (AUVs) in underwater scenarios, for example, for communication between vehicles or when the AUV is approaching a docking station for downloading of data gathered during a survey mission, is becoming a relevant application in the context of sea exploration and mining. In this paper the analysis of the J-pole antenna and two of its configurations namely Super J-pole and Collinear J-pole antennas are presented, aimed at improving the propagation distance and data rates when such antennas are installed on AUV for onward usage in underwater communications. The performance of these three antennas is assessed through simulation in fresh and sea water, operating in the High Frequency (HF) band. These antennas are compared in terms of bandwidth and directivity which are important elements in the transmission and reception of electromagnetic signals. The results obtained show that these antennas will be desirable both for improved data rates and propagation distance in fresh and sea water. The antennas were designed with FEKO electromagnetic simulation software.

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“…Impedance matching is needed for electrically short antennas to be able to operate at 50 ohms and it can be achieved with the help of lump components. Many types of antennas for underwater applications are discussed in the literatures [22][23][24][25][26][27]. Most of them are wideband antennas for underwater communications in the MHz region; however, the basic principles of design and performance of these antennas apply also for lower frequencies in the kHz region [28].…”

Section: Antennas For Underwater Communication and Frequency Allocationmentioning

confidence: 99%

Theoretical Concept for a Mobile Underwater Radio-Navigation System Using Pseudolite Buoys

et al. 2020

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Reliable and accurate positioning underwater has been the goal of many research activities in the last years. In this paper, we present our design of a self-maintainable underwater navigation system, which provides a simple, low-cost, and flexible solution. In our concept, a set of buoys is equipped with Global Navigation Satellite System (GNSS) receivers as well as underwater pseudolite signal transmitters. Therefore, the buoys are able estimate their position and transmit this information underwater through a pseudolite signal. We particularly designed this signal for underwater ranging for both fresh and salt water. Any suitable underwater receiver is then able to do ranging via these pseudolite signals. In this paper, we theoretically analyze and test our concept using several buoy distributions and diving depths. The optimal arrangement of buoys is determined in terms of accuracy and availability depending on the number of available buoys and targeted water depth for an efficient operation. For example, at a targeted depth of 30 m in fresh water, a maximum horizontal position root-mean-square (RMS) error of less than 3 m can be achieved with a set of five buoys providing a service radius of up to 72 m.

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Antenna design for underwater radio communications

Cited by 20 publications

References 11 publications

Wideband dipole antennas with parasitic elements for underwater communications

Wideband dipole antennas with parasitic elements for underwater communications

Analysis of J-Pole antenna configurations for underwater communications

Theoretical Concept for a Mobile Underwater Radio-Navigation System Using Pseudolite Buoys

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