Topology Optimization of Dielectric Resonator in 3-D Waveguide Structure Considering Higher Mode Incidence

Choi, Nak-Sun; Kim, Donghun; Lee, Hyang-Beom; Byun, Jin-Kyu

doi:10.1109/tmag.2011.2176109

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…Such approach has the clear advantage of being able to design one integrated structure to obtain a given set of filter properties instead of a cascaded series of elements. Former work on synthesis of waveguide filters using topology optimization has mainly focused on dielectric materials , which can be fabricated using for example, additive manufacturing techniques . Sharper filter responses can in general be obtained using metallic structures because of the large metal/air contrast.…”

Section: Introductionmentioning

confidence: 99%

“…Such approach has the clear advantage of being able to design one integrated structure to obtain a given set of filter properties instead of a cascaded series of elements. Former work on synthesis of waveguide filters using topology optimization has mainly focused on dielectric materials (Byun and Park, 2007;Khalil et al, 2008aKhalil et al, ,b, 2009Choi et al, 2012) which can be fabricated using e.g. additive manufacturing techniques (Delhote et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Topology optimization of microwave waveguide filters

Aage

Johansen

2017

Numerical Meth Engineering

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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.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Such approach has the clear advantage of being able to design one integrated structure to obtain a given set of filter properties instead of a cascaded series of elements. Former work on synthesis of waveguide filters using topology optimization has mainly focused on dielectric materials (Byun and Park, 2007;Khalil et al, 2008aKhalil et al, ,b, 2009Choi et al, 2012) which can be fabricated using e.g. additive manufacturing techniques (Delhote et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Topology optimization of microwave waveguide filters

Aage

Johansen

2017

Numerical Meth Engineering

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“…This technique can be combined with various numerical optimization methods, such as evolutionary and gradient-based algorithms, to find approximate optimal solutions. In [75][76][77][78], evolutionary-based methods that do not require gradient information have been used. However, it may result in complex and nonintuitive shapes with isolated or disconnected regions of material, as shown in Figure 11a.…”

Section: On-off Methodsmentioning

confidence: 99%

Recent Trends in Additive Manufacturing and Topology Optimization of Reluctance Machines

2023

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Additive manufacturing (AM) or 3D printing has opened up new opportunities for researchers in the field of electrical machines, as it allows for more flexibility in design and faster prototyping, which can lead to more efficient and cost-effective production. An overview of the primary AM techniques utilized for designing electrical machines is presented in this paper. AM enables the creation of complex and intricate designs that are difficult or impossible to achieve using traditional methods. Topology Optimization (TO) can be used to optimize the design of parts for various purposes such as weight, thermal, material usage and structural performance. This paper primarily concentrates on the most recent studies of the AM and TO of the reluctance machines. The integration of AM with TO can enhance the design and fabrication process of magnetic components in electrical machines by overcoming current manufacturing limitations and enabling the exploration of new design possibilities. The technology of AM and TO both have limitations and challenges which are discussed in this paper. Overall, the paper offers a valuable resource for researchers and practitioners working in the field of AM and TO of electrical machines.

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“…Among the wide variety of radio absorbers (RAs) for various purposes, single-layer Dallenbach RAs are widely used due to their reliability and ease of implementation. RAs of this type is a dielectric (magnetodielectric) layer with losses, located on a metal screen [1][2][3][4][5][6][7]. The frequency dependence of the reflection coefficient on this RA is characterized by several minima at the so-called matching frequencies [4].…”

Section: Introductionmentioning

confidence: 99%

Frequency Control of a Resonant Radio Absorber with a Free Space

Kazantsev

Babayan

Крафтмахер

et al. 2021

J. Commun. Technol. Electron.

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Numerical calculations of the matching of a resonant radio absorber (RA) have confirmed that the ideal matching of such an RA with free space can be realized using practically any dielectrics with losses at any desired frequency. The conditions are considered that provide the widest matching band of the RA, and it is shown that the ratio of the bandwidth to the RA thickness (bandwidth to thickness ratio) is about 3.7, i.e., more than for the usual single-layer Dallenbach RA (about 3.2).

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Topology Optimization of Dielectric Resonator in 3-D Waveguide Structure Considering Higher Mode Incidence

Cited by 7 publications

References 6 publications

Topology optimization of microwave waveguide filters

Topology optimization of microwave waveguide filters

Recent Trends in Additive Manufacturing and Topology Optimization of Reluctance Machines

Frequency Control of a Resonant Radio Absorber with a Free Space

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