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About

About

My name is Oluyomi Aboderin, I am a Nigerian. I had my bachelor’s degree at the Ladoke Akintola University of Technology Ogbomoso, Nigeria in Electronic and Electrical Engineering. Afterwards I joined National Space Research and Development Agency (The Nigerian Space Agency) in 2005 as Research Engineer. In 2009, I was granted study leave to pursue Masters degree in Personal Mobile and Satellite Communications (PMSC) at the University of Bradford, in the United Kingdom and in 2012, I was again granted study leave to join MAP-tele doctoral degree program, through which I was able to join INESC-TEC. Currently working on Design, analysis and construction of underwater antennas. My research interest include:  underwater antenna technology, satellite channel modelling, satellite communications and radio frequency coordination, assignment and allotment for fixed, mobile and satellite services.

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001
Publications

2017

Analysis of loop antenna with ground plane for underwater communications

Authors
Aboderin, O; Pessoa, LM; Salgado, HM;

Publication
OCEANS 2017 - Aberdeen

Abstract

2017

Wideband dipole antennas with parasitic elements for underwater communications

Authors
Aboderin, O; Pessoa, LM; Salgado, HM;

Publication
OCEANS 2017 - Aberdeen

Abstract

2017

Performance evaluation of antennas for underwater applications

Authors
Aboderin, O; Pessoa, LM; Salgado, HM;

Publication
2017 Wireless Days, WD 2017

Abstract
The capability of an Autonomous Underwater Vehicle (AUV) or Remote Operated Vehicles (ROVs) to communicate with underwater sensor nodes or a docking station, for the exchange or transfer of data gathered during a survey mission, requires an high-speed short-range communication link. This is important because of the global attention to the underwater communication applications. To this end, underwater antennas will play a significant role in ensuring good data rates and propagation distances for these applications. In this paper, the performance of three antennas, specifically, loop, dipole and J-pole is assessed through simulation for usage in fresh and sea water 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 and directivity. The results obtained shows that the J-pole antenna has significant advantages in term of the measured parameters over the other antennas. Experimental results of the reflection coefficient of the J-pole antenna in fresh water are given that agree well with the simulation results. © 2017 IEEE.

2016

Antenna Design for Underwater Radio Communications

Authors
Inacio, SI; Pereira, MR; Santos, HM; Pessoa, LM; Teixeira, FB; Lopes, MJ; Aboderin, O; Salgado, HM;

Publication
OCEANS 2016 - SHANGHAI

Abstract
In this paper we assess the influence of the conductivity of the medium on the radiation characteristics and input impedance of a loop antenna designed for underwater communications. The initial study is based on simulation of the antenna characteristics using FEKO electromagnetic (EM) software. Additionally, an equivalent circuit model of the antenna is also obtained and simulation of the input impedance on ADS software shows good agreement with the EM simulator. It is found that the radiation pattern, of the loop antenna changes significantly with the conductivity of the medium, from freshwater to seawater. The loop antennas were built with baluns and tested in freshwater, where the insertion loss between two identical antennas and the radiation pattern of one of them were also measured. The results show good agreement with the simulations.

2016

Dipole Antenna for Underwater Radio Communications

Authors
Inacio, SI; Pereira, MR; Santos, HM; Pessoa, LM; Teixeira, FB; Lopes, MJ; Aboderin, O; Salgado, HM;

Publication
2016 IEEE THIRD UNDERWATER COMMUNICATIONS AND NETWORKING CONFERENCE (UCOMMS)

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.