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- W2149707921 abstract "The aggressive space mapping algorithm is used in this project for the optimisation of electromagnetic structures. This technique combines the use of fast, less accurate models with more time-consuming, high precision models in the optimisation of a design. MATLAB’s technical computing environment possesses powerful tools for optimisation as well as the graphical representation and mathematical post-processing of data. A software interface, which uses Visual Basic for Applications, is created between MATLAB and the electromagnetic solvers, CST Microwave Studio and μWave Wizard, that are used for the fine and coarse model calculations. The interface enables the direct interchange of data, which allows MATLAB to control the optimisation for the automation of the design process. The optimisation of a microwave coaxial resonator with input coupling is used to demonstrate the design environment. An accurate equivalent circuit model is available to describe the problem. The space mapping optimisation of this structure works well, with a significant improvement in the efficiency of the optimisation when compared to standard optimisation techniques. Multimode horn antennas are of interest for use as feeds in radio-astronomy telescope systems. The design of a stepped circular horn antenna in the space mapping design environment is presented. The horn’s radiation pattern is optimised for low cross-polarisation. This structure is much more complex to model than the resonator example. The generalised scattering matrix representation is used in the coarse model description. The far-fields are calculated from the aperture fields by means of the Fast Fourier Transform. Various tests confirm that the optimisation is steered in the right direction as long as the coarse model response follows the trend of the fine model response over the optimisation space. The presented design environment is a powerful tool for the automation of the design of electromagnetic structures." @default.
- W2149707921 created "2016-06-24" @default.
- W2149707921 creator A5060111553 @default.
- W2149707921 date "2010-12-01" @default.
- W2149707921 modified "2023-09-26" @default.
- W2149707921 title "A Design Environment for the Automated Optimisation of Low Cross-Polarisation Horn Antennas" @default.
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