onr:"swepub:oai:research.chalmers.se:7aea09ca-8414-4208-b87e-b7bf921926ff"
Search: onr:"swepub:oai:research.chalmers.se:7aea09ca-8414-4208-b87e-b7bf921926ff" > Gradient-based shap...
- 1 of 1
- Previous record
- Next record
- To hitlist
- Jacobsson, Per,1977Chalmers tekniska högskola,Chalmers University of Technology (author)
Gradient-based shape optimisation of conformal array antennas
- Article/chapterEnglish2010
Publisher, publication year, extent ...
- Institution of Engineering and Technology (IET),2010
Numbers
- LIBRIS-ID:oai:research.chalmers.se:7aea09ca-8414-4208-b87e-b7bf921926ff
- https://doi.org/10.1049/iet-map.2008.0418DOI
- https://research.chalmers.se/publication/118408URI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- We present and test a gradient-based shape optimisation method for the minimisation of the active reflection coefficient for conformal array antennas. The goal function is an average of the active reflection coefficient with respect to all antenna elements, a prespecified frequency interval, and a set of excitation modes. The sensitivity of the goal function with respect to changes of the antenna's shape is based on the continuum form of Maxwell's equations, which provides good flexibility for the choice of field solver. The sensitivity is formulated in terms of the field solution of the original antenna problem and a similar adjoint field problem, which gives the sensitivity for an arbitrary number of design parameters given the solution of Maxwell's equations. We test the optimisation method in two dimensions for array antennas that conform to a circular cylinder, where both uniform arrays and arrays that occupy a part of the cylinder's circumference are considered. For some cases, we find that it is feasible to reduce the active reflection coefficient for arrays that partially cover the circumference of the cylinder by means of end elements that differ from the bulk elements of the array. In general, substantial reductions in the active reflection coefficient can be achieved by relatively small shape changes of the antenna elements. For the test cases considered in this article, the optimisation method typically converges to an optimised design within 5-15 iterations.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Annan elektroteknik och elektronik hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Other Electrical Engineering, Electronic Engineering, Information Engineering hsv//eng
- modal decomposition
- section wave-guides
- horn
- propagation
- pattern synthesis
- parameter
- acoustic
Added entries (persons, corporate bodies, meetings, titles ...)
- Rylander, Thomas,1972Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)rylander (author)
- Chalmers tekniska högskola (creator_code:org_t)
Related titles
- In:IET Microwaves, Antennas and Propagation: Institution of Engineering and Technology (IET)4:2, s. 200-2091751-87251751-8733
Internet link
Find in a library
- IET Microwaves, Antennas and Propagation (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Jacobsson, Per, ...
- Rylander, Thomas ...
- About the subject
-
- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
- and Electrical Engin ...
- and Other Electrical ...
- Articles in the publication
- IET Microwaves, ...
- By the university
- Chalmers University of Technology
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
