Browsing by Author "Sadiq, Bashir Olaniyi"
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Item Dual Band Fractal Antenna Design For Wireless Application(Department of Computer Engineering, Faculty of Computer Science, University of Sriwijaya, Indonesia, 2016-10-10) Zakariyya, Olayinka Sikiru; Sadiq, Bashir Olaniyi; Abdulrahman, Olaniyan Adebayo; Salami, Abdulazeez FemiThe objective of this paper was to design and analyse a dual wide band compact antenna for wireless application. Microstrip patch antenna limitation can be overcome by using fractal geometry. The proposed antenna was designed with a radius of 15mm on a FR4 lossy substrate with relative permittivity of 4.4 and loss factor of 0.025. Measurement result showed that the antenna has a dual band of operation with bandwidth for return loss below -10dB of 1.84GHz (2.2GHz-4.07GHz) and 2GHz (6GHz-8GHz) which can be applied to wireless local area network (WLAN) and Ultra wide band applications.Item Evaluative Assessment of an X-band Microstrip Patch Antenna for Wireless Systems(College of Engineering, Afe Babalola University, Ado-Ekiti (ABUAD), Ekiti, Nigeria, 2018-07-09) Salami, Abdulazeez Femi; Zakariyya, Olayinka Sikiru; Sadiq, Bashir Olaniyi; Abdulrahman, Olaniyan AdebayoMicrostrip patch antennas (MPAs) are rapidly gaining more attention due to the proliferation of communication devices and systems with frequencies becoming more suitable for the size and performance of this type of antenna. Due to recent advancements in semiconductor technology, high dielectric constant materials are used to achieve additional size reduction which has made MPAs very useful and popular in the design of mobile devices and wireless systems. However, MPAs suffer from problems associated with narrow bandwidth and low gain. Techniques employed for improving the performance of MPA hinge on tweaking features such as the patch size, substrate height, ground plane size and feeding method. In view of this, this research designs and analyses the performance of an X-band MPA for wireless systems using CST Microwave Studio. Including the ground plane, the proposed design has a low-profile structure of 17 mm × 17 mm × 1.6 mm which is suitable for wireless systems. The proposed design also resonates at a frequency of 10 GHz with an omnidirectional radiation pattern exhibiting a gain of 7.2 dBi. Return Loss, VSWR, Gain and Radiation Pattern are the performance indicators employed in this research. The proposed MPA design demonstrates marked performance improvement when benchmarked with a similar MPA designed for 5G applications.Item Modified Edge-Fed Sierpinski Carpet Miniaturized Microstrip Patch Antenna(University of Nigeria Press Ltd., University of Nigeria, Nsukka, 2016-07-13) Zakariyya, Olayinka Sikiru; Sadiq, Bashir Olaniyi; Abdulrahman, Olaniyan Adebayo; Salami, Abdulazeez FemiThis paper presented a modified edge fed Sierpinski carpet microstrip patch antenna for antenna miniaturization. The proposed design was etched as Sierpinski carpet to lower the antenna resonant frequency, which is used to reduce the conventional patch antenna size. After the Sierpinski carpet second iteration, the proposed antenna was modified by replacing the rectangular slot in the middle of the patch with a circular slot. Simulation results showed that the proposed antenna achieved 46.5% size reduction when compared with the main patch antenna without affecting the resonant frequency and radiation patterns.Item On the Accuracy of Edge Detectors in Number Plate Extraction(Vilnius University, Lithuania and University of Latvia, Latvia, 2019-05-22) Sadiq, Bashir Olaniyi; Ochia, E. O.; Zakariyya, Olayinka Sikiru; Salami, Abdulazeez FemiEdge detection as a pre-processing stage is a fundamental and important aspect of the number plate extraction system. This is due to the fact that the identification of a particular vehicle is achievable using the number plate because each number plate is unique to a vehicle. As such, the characters of a number plate system that differ in lines and shapes can be extracted using the principle of edge detection. This paper presents a method of number plate extraction using edge detection technique. Edges in number plates are identified with changes in the intensity of pixel values. Therefore, these edges are identified using a single based pixel or collection of pixel-based approach. The efficiency of these approaches of edge detection algorithms in number plate extraction in both noisy and clean environment are experimented. Experimental results are achieved in MATLAB 2017b using the Pratt Figure of Merit (PFOM) as a performance metric.Item Performance Review of Selected Topology-Aware Routing Strategies for Clustering Sensor Networks(Faculty of Engineering & Technology, University of Ilorin, Ilorin, Nigeria, 2019-12-11) Salami, Abdulazeez Femi; Zakariyya, Olayinka Sikiru; Amuda, S. A. Y.; Sadiq, Bashir Olaniyi; Abdulrahman, Olaniyan AdebayoIn this paper, cluster-based routing (CBR) protocols for addressing issues pertinent to energy consumption, network lifespan, resource allocation and network coverage are reviewed. The paper presents an in-depth performance analysis and critical review of selected CBR algorithms. The study is domain-specific and simulation-based with emphasis on the tripartite trade-off between coverage, connectivity and lifespan. The rigorous statistical analysis of selected CBR schemes was also presented. Network simulation was conducted with Java-based Atarraya discrete-event simulation toolkit while statistical analysis was carried out using MATLAB. It was observed that the Periodic, Event-Driven and Query-Based Routing (PEQ) schemes performs better than Low-Energy Adaptive Clustering Hierarchy (LEACH), Threshold-Sensitive Energy-Efficient Sensor Network (TEEN) and Geographic Adaptive Fidelity (GAF) in terms of network lifespan, energy consumption and network throughput.