Shape Synthesis Based on Topology Sensitivity
(2019) In IEEE Transactions on Antennas and Propagation 67(6). p.3889-3901- Abstract
- A method evaluating the sensitivity of a given parameter to topological changes is proposed within the method of moments paradigm. The basis functions are used as degrees of freedom which, when compared to the classical pixeling technique, provide important advantages, one of them being impedance matrix inversion free evaluation of the sensitivity. The devised procedure utilizes port modes and their superposition which, together with only a single evaluation of all matrix operators, leads to a computationally effective procedure. The proposed method is approximately 100 times faster than the contemporary approaches, which allows the investigation of the sensitivity and the modification of shapes in real time. The method is compared with... (More)
- A method evaluating the sensitivity of a given parameter to topological changes is proposed within the method of moments paradigm. The basis functions are used as degrees of freedom which, when compared to the classical pixeling technique, provide important advantages, one of them being impedance matrix inversion free evaluation of the sensitivity. The devised procedure utilizes port modes and their superposition which, together with only a single evaluation of all matrix operators, leads to a computationally effective procedure. The proposed method is approximately 100 times faster than the contemporary approaches, which allows the investigation of the sensitivity and the modification of shapes in real time. The method is compared with the known approaches and its validity and effectiveness are verified using a series of examples. The procedure can be implemented in up-to-date electromagnetic (EM) simulators in a straightforward manner. It is shown that the iterative repetition of the topology sensitivity evaluation can be used for gradient-based topology synthesis. This technique can also be employed as a local step in global optimizers. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/247258bf-80f1-492c-a1b3-7a07c4d3ab03
- author
- Capek, Miloslav LU ; Jelinek, Lukas and Gustafsson, Mats LU
- organization
- publishing date
- 2019
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Transactions on Antennas and Propagation
- volume
- 67
- issue
- 6
- pages
- 3889 - 3901
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:85067031382
- ISSN
- 0018-926X
- DOI
- 10.1109/TAP.2019.2902749
- project
- EIT_CACO-EMD Complex analysis and convex optimization for EM design
- Optimal antenna synthesis
- language
- English
- LU publication?
- yes
- id
- 247258bf-80f1-492c-a1b3-7a07c4d3ab03
- date added to LUP
- 2019-06-27 21:07:47
- date last changed
- 2022-05-11 19:29:04
@article{247258bf-80f1-492c-a1b3-7a07c4d3ab03, abstract = {{A method evaluating the sensitivity of a given parameter to topological changes is proposed within the method of moments paradigm. The basis functions are used as degrees of freedom which, when compared to the classical pixeling technique, provide important advantages, one of them being impedance matrix inversion free evaluation of the sensitivity. The devised procedure utilizes port modes and their superposition which, together with only a single evaluation of all matrix operators, leads to a computationally effective procedure. The proposed method is approximately 100 times faster than the contemporary approaches, which allows the investigation of the sensitivity and the modification of shapes in real time. The method is compared with the known approaches and its validity and effectiveness are verified using a series of examples. The procedure can be implemented in up-to-date electromagnetic (EM) simulators in a straightforward manner. It is shown that the iterative repetition of the topology sensitivity evaluation can be used for gradient-based topology synthesis. This technique can also be employed as a local step in global optimizers.}}, author = {{Capek, Miloslav and Jelinek, Lukas and Gustafsson, Mats}}, issn = {{0018-926X}}, language = {{eng}}, number = {{6}}, pages = {{3889--3901}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Antennas and Propagation}}, title = {{Shape Synthesis Based on Topology Sensitivity}}, url = {{http://dx.doi.org/10.1109/TAP.2019.2902749}}, doi = {{10.1109/TAP.2019.2902749}}, volume = {{67}}, year = {{2019}}, }