Thesis Type: Postgraduate
Institution Of The Thesis: Middle East Technical University, Faculty of Engineering, Department of Electrical and Electronics Engineering, Turkey
Approval Date: 2010
Thesis Language: English
Student: Mustafa Ural
Supervisor: MUSTAFA KUZUOĞLUAbstract:
In this thesis work, minimization of platform-based coupling between the antennas of two VHF radios on an aircraft platform and two HF radios on a ship platform is aimed. For this purpose; an optimal antenna placement, which yields minimum average coupling between the antennas over the whole frequency band of operation is determined for each platform. Two important global optimization techniques, namely Genetic Algorithm Optimization and Particle Swarm Optimization, are used in determination of these optimal antenna placements. Aircraft & ship platforms and antennas placed on them are modeled based on their real electrical and physical properties in CST – MWS (Microwave Studio) simulation tool. For each platform, antenna placements and coupling results determined by two different optimization techniques and performances of these optimization techniques are compared with each other. At the end of this thesis work; for each platform, far-field radiation pattern performances of the antennas at their optimal places are analyzed in terms of directivity and coverage.