Topology optimization of microwave frequency dividing multiplexers
العنوان: | Topology optimization of microwave frequency dividing multiplexers |
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المؤلفون: | Bokhari, Ahmad H., Hassan, Emadeldeen, Wadbro, Eddie, 1981 |
المصدر: | Structural and multidisciplinary optimization (Print). 66(5) |
مصطلحات موضوعية: | Electromagnetic, Material-distribution method, Microwave, Multiplexer, Topology optimization, Electric conductors, Multiplexing equipment, Optimization, Wave propagation, Design domains, Electromagnetics, Material distribution, Material distribution method, Microwaves frequency, Objective functions, Optimization problems, Passive devices, Topology optimisation, Topology, Matematik, Mathematics |
الوصف: | We use material-distribution-based topology optimization to design a three-port frequency dividing multiplexer at microwave frequencies. That is, by placing a good electric conductor inside the design domain, we aim to design a passive device that splits the incoming signal’s frequencies into two frequency bands and transmits them to their respective output ports. The Helmholtz equation models the time-harmonic wave propagation problem. We solve the governing equation using the finite element method. The adjoint variable method provides the required gradients, and we solve the topology optimization problem using Svanberg’s MMA algorithm. In this study, we present a technique for modeling the distribution of a good electric conductor within the design domain. In addition, we derive a power balance expression, which aids in formulating a series of three objective functions. In each successive objective function, we add more information and evaluate its impact on the results. The results show that by selecting a suitable objective function, we achieve more than 93.7% transmission for both the frequency bands. Moreover, the numerical experiments suggest that the optimization problem is self penalized and is sensitive to the initial design. |
وصف الملف: | electronic |
الوصول الحر: | https://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-94659Test https://doi.org/10.1007/s00158-023-03561-5Test https://kau.diva-portal.org/smash/get/diva2:1757038/FULLTEXT01.pdfTest |
قاعدة البيانات: | SwePub |
تدمد: | 1615147X 16151488 |
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DOI: | 10.1007/s00158-023-03561-5 |