Topology optimization for the design of microwave resonator considering concentration of magnetic energy

The Proceedings of Mechanical Engineering Congress, Japan(2018)

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Abstract
Microwave resonators are devices used for electron spin resonance spectroscopy which is expected to realize quantum computers. The performance of the microwave resonators depends on the magnetic flux density norm in the observation domain of the devices. Conventional microwave resonators have been designed to increase the magnetic flux density norm by resonance in the observation domain of the devices. However, since the structures have been made by trial and error, there would be further improvement in performance of the devices. Thus, in this research, microwave resonators are designed by level set-based topology optimization. First, the design model and the governing equations of electromagnetic wave propagation problem are explained. Second, we propose a topology optimization method for the design of microwave resonators. Third, the optimization problem is formulated so that energy concentration of magnetic field can be achieved. Finally, a numerical example is provided to confirm the usability and validity of the proposed method.
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Key words
Microwave Filters,Millimeter-Wave Applications
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