Topology optimization of microwave waveguide filters
Egede Johansen, V
International Journal for Numerical Methods in Engineering
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Aage, N., & Egede Johansen, V. (2017). Topology optimization of microwave waveguide filters. International Journal for Numerical Methods in Engineering https://doi.org/10.1002/nme.5551
We present a density-based topology optimization approach for the design of metallic microwave insert filters. A two-phase optimization procedure is proposed in which we, starting from a uniform design, first optimize to obtain a set of spectral varying resonators followed by a band gap optimization for the desired filter characteristics. This is illustrated through numerical experiments and comparison to a standard band pass filter design. It is seen that the carefully optimized topologies can sharpen the filter characteristics and improve performance. Furthermore, the obtained designs share little resemblance to standard filter layouts, and hence, the proposed design method offers a new design tool in microwave engineering.
This work was funded by the Villum Foundation through the NextTop project and the Danish National Advanced Technology Foundation through the grant Wireless Coupling in Small Autonomous Apparatus (www.hoejteknologifonden.dk).
External DOI: https://doi.org/10.1002/nme.5551
This record's URL: https://www.repository.cam.ac.uk/handle/1810/264513