School of Electrical Systems Engineering Technology

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https://repository.futo.edu.ng/handle/20.500.14562/1241

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Browsing School of Electrical Systems Engineering Technology by Author "Agubor, Cosmas Kemdirim"

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    5G network deployment in Nigeria: Key challenges and the way forward
    (U. P., 2021-03-17) Agubor, Cosmas Kemdirim; Chukwuchekwa, Nkwachukwu; Ezema, Longinus Sunday
    Many countries are faced with different challenges in the deployment of 5G mobile wireless communication technology. These challenges have delayed the smooth rollout of this technology in these countries. Nigeria has its own issues that have hindered the implementation of this technology in the country. This paper discusses these challenges and suggestions made on what to do for the implementation of 5G technology. A survey was done by visiting and obtaining reports from two major players in the industry as well as understudying actions taken by other nations in tackling similar problems related to 5G network implementation. Based on the information gathered both from the industry and related literature some useful suggestions such as improved fiber infrastructure and relaxing regulatory barriers to encourage investors were made as a way forward for the full implementation and operation of the 5G technology in Nigeria.
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    A study of the propagation characteristics of a 13 element yagi-uda antenna
    (International Association of Scientific Innovation and Research, 2017) Onwumere, Christogonus; Agubor, Cosmas Kemdirim
    This paper reports the propagation characteristics of a 13- element 640MHz Yagi antenna.The Yagi-Uda antenna is a highly directional antenna and in the transmit mode propagates electromagnetic energy in the direction running from the dipole or driven element toward the director and is sensitive to incoming electromagnetic energy in the receive direction. In this study, NBS 688 technical notes and antenna design curves were used and the resulting antenna estimate was modeled. The simulation and optimization was carried out using 4NEC2 antenna design software. Verification of the optimal design was achieved using EZNEC v.6.0 antenna modeler. The simulation result showed Antenna characteristics such as input impedance, radiated power, efficiency and far-field radiation pattern.