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Comparison of Computational Electromagnetic Solvers with help of various VHF Wired Antennas

Kaiwalya Sanjay Pethe [1], B.C. Joshi [3], S.P. Mahajan [2]

[1, 2] Department of Electronics and Telecommunication, College of Engineering Pune, [3] National Centre for radio Astrophysics, Pune

finding the correct mathematical model of the antenna has been a very difficult task for the radio engineers, since ages. The involvement of linear algebra in solving the electromagnetic equations has improved the efficiency by which the solution matches the actual results. Also, it led to development of different computer tools to find the electromagnetic fields. Hence, now there are a lot of different techniques invented to find the electromagnetic fields for the radiators. To design the test range for antennas at 70MHz, it was necessary to simulate a lot of wired antennas. This was done to select a suitable test antenna with the size constraint, which can perform as per the requirements. The paper here includes one part of the design process which is comparison between different solvers in terms of their performance parameters, available to find the solution to the wave equation. The simulation tool used is CAD-FEKO, and the solver methods compared are Finite Element Analysis Method (FEM), Method of Moments (MoM), Finite Difference Time Domain Analysis (FDTD).

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