Change search
Link to record
Permanent link

Direct link
BETA
Sundberg, Sofia
Publications (4 of 4) Show all publications
Sundberg, S. & Ekman, J. (2006). Modeling antenna characteristics using PEEC models (ed.). In: (Ed.), (Ed.), Proceedings of the Nordic Antenna Symposium: . Paper presented at The Nordic antenna symposium : 30/05/2006 - 01/06/2006. : Försvarets materielverk
Open this publication in new window or tab >>Modeling antenna characteristics using PEEC models
2006 (English)In: Proceedings of the Nordic Antenna Symposium, Försvarets materielverk , 2006Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Försvarets materielverk, 2006
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
urn:nbn:se:ltu:diva-31322 (URN)57753ca0-7423-11db-962b-000ea68e967b (Local ID)57753ca0-7423-11db-962b-000ea68e967b (Archive number)57753ca0-7423-11db-962b-000ea68e967b (OAI)
Conference
The Nordic antenna symposium : 30/05/2006 - 01/06/2006
Note
Godkänd; 2006; 20061114 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Sundberg, S. & Ekman, J. (2006). PEEC modeling of antenna characteristics (ed.). In: (Ed.), (Ed.), 2006 IEEE International Symposium on Electromagnetic Compatibility: [2006 IEEE EMC] ; Portland, Oregon, USA, 14 - 18 August 2006. Paper presented at IEEE EMC Symposium : 14/08/2006 - 18/08/2006 (pp. 580-585). Piscataway, NJ: IEEE Communications Society
Open this publication in new window or tab >>PEEC modeling of antenna characteristics
2006 (English)In: 2006 IEEE International Symposium on Electromagnetic Compatibility: [2006 IEEE EMC] ; Portland, Oregon, USA, 14 - 18 August 2006, Piscataway, NJ: IEEE Communications Society, 2006, p. 580-585Conference paper, Published paper (Refereed)
Abstract [en]

Electromagnetic modeling of antenna characteristics can be performed using different methods. This papers deals with antenna modeling using Partial Element Equivalent Circuit (PEEC) models. Antenna properties including input impedance, radiation diagrams and gain are computed from PEEC model results. The input impedance is computed directly by using the currents and voltages at the feed-point of the antenna. The radiation diagrams are computed in a post-processing step by treating each volume cell as an infinitesimal dipole and using the superposition principle to compute the radiated field. The computed results are compared to analytical results for dipoles. For more complex antenna structures the computed results are compared with measurements and results from other computational methods. Accurate and fast results shows that the method is promising as an antenna system design tool.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2006
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
urn:nbn:se:ltu:diva-30175 (URN)10.1109/ISEMC.2006.1706375 (DOI)000259733100118 ()3e9abe00-7417-11db-962b-000ea68e967b (Local ID)1-4244-0293-X (ISBN)3e9abe00-7417-11db-962b-000ea68e967b (Archive number)3e9abe00-7417-11db-962b-000ea68e967b (OAI)
Conference
IEEE EMC Symposium : 14/08/2006 - 18/08/2006
Note
Godkänd; 2006; 20061114 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved
Delsing, J., Ekman, J., Johansson, J., Sundberg, S., Bäckström, M. & Nilsson, T. (2006). Susceptibility of sensor networks to intentional electromagnetic interference (ed.). In: (Ed.), (Ed.), 2006 17th International Zurich Symposium on Electromagnetic Compatibility: Suntec City, Singapore, 28 February - 3 March 2006. Paper presented at International Zürich Symposium on Electromagnetic Compatibility : 27/02/2006 - 03/03/2006 (pp. 172-175). Piscataway, NJ: IEEE Communications Society
Open this publication in new window or tab >>Susceptibility of sensor networks to intentional electromagnetic interference
Show others...
2006 (English)In: 2006 17th International Zurich Symposium on Electromagnetic Compatibility: Suntec City, Singapore, 28 February - 3 March 2006, Piscataway, NJ: IEEE Communications Society, 2006, p. 172-175Conference paper, Published paper (Refereed)
Abstract [en]

It is reasonable to think that sensor networks might be part of society critical systems in the future. Therefor this paper discusses and shows the vulnerabilities of sensor networks to intentional electromagnetic interference (IEMI). Principle ways of sensor network IEMI is addressed and followed by a discussion on schemes for protection. Experimental results for both in-band and exband interference from low- and high- level sources is reported. It is obvious that more emphasis has to be put on sensor networks susceptibility to IEMI, and in particular more experimental data is needed.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2006
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
urn:nbn:se:ltu:diva-39699 (URN)10.1109/EMCZUR.2006.214897 (DOI)000244386300044 ()e8cf6af0-799f-11db-8824-000ea68e967b (Local ID)3-9522990-3-0 (ISBN)e8cf6af0-799f-11db-8824-000ea68e967b (Archive number)e8cf6af0-799f-11db-8824-000ea68e967b (OAI)
Conference
International Zürich Symposium on Electromagnetic Compatibility : 27/02/2006 - 03/03/2006
Note
Godkänd; 2006; 20060914 (ysko)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2018-07-10Bibliographically approved
Jonsson, H. & Sundberg, S. (2004). On the problem of computing zookeeper routes (ed.). Paper presented at . Luleå: Luleå tekniska universitet
Open this publication in new window or tab >>On the problem of computing zookeeper routes
2004 (English)Report (Other academic)
Abstract [en]

The Zookeeper's Problem is a shortest-path problem that, given a simple polygon (a zoo) containing a set of disjoint convex polygons (cages) attached to the boundary of the zoo, asks for a shortest route (closed path) in the zoo that intersects the boundaries of all cages without entering their interiors. The literature contains several algorithms for variants of this problem some of which compute exact and some approximate solutions. However, no implementations have been reported. Moreover, concerns have also been raised about the numerical properties of the algorithms that compute exact solutions. In this paper we present a study of two algorithms for the Zookeeper's Problem. One of them compute exact solutions and the other provably good approximations. We give observations about the algorithms and the solutions they compute. We also present an experimental study based on an implementation of the algorithms in Java.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2004. p. 22
Series
Research report / Luleå University of Technology, ISSN 1402-1528 ; 2004:10
National Category
Computer Sciences Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Dependable Communication and Computation Systems; Industrial Electronics
Identifiers
urn:nbn:se:ltu:diva-24344 (URN)a94c7df0-ece5-11db-bc0c-000ea68e967b (Local ID)a94c7df0-ece5-11db-bc0c-000ea68e967b (Archive number)a94c7df0-ece5-11db-bc0c-000ea68e967b (OAI)
Note
Godkänd; 2004; 20070417 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-01-10Bibliographically approved
Organisations

Search in DiVA

Show all publications