Ulf Carlberg

Showing 46 publications

2014
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Evaluation of V2X Antenna Performance Using a Multipath Simulation Tool

Edith Condo Neira, Ulf Carlberg, Jan Carlsson et al
Antennas and Propagation (EuCAP), Proceedings of the 8th European Conference, The Hague, The Netherlands, Apr. 2014, p. 2534-+
Paper in proceeding
2013

Definition of Antenna Diversity Gain in User-Distributed 3D-Random Line-Of-Sight

Per-Simon Kildal, Ulf Carlberg, Jan Carlsson
Journal of Electromagnetic Engineering and Science. Vol. 13 (2), p. 86-92
Journal article
2013

Correlation between far-field patterns on both sides of the head of two-port antenna on mobile terminal

Ahmed Hussain, Per-Simon Kildal, Ulf Carlberg et al
ISAP 2013 - Proceedings of the 2013 International Symposium on Antennas and Propagation. Vol. 1, p. 288-289
Paper in proceeding
2013
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Diversity gains of multiport mobile terminals in multipath for talk positions on both sides of the head

Ahmed Hussain, Per-Simon Kildal, Ulf Carlberg et al
2013 7th European Conference on Antennas and Propagation, EuCAP 2013, p. 863-866
Paper in proceeding
2012
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Diversity Gains in Random Line-Of-Sight and Rich Isotropic Multipath Environment

Jan Carlsson, Ulf Carlberg, Per-Simon Kildal
2012 Loughborough Antennas & Propagation Conference (LAPC), Lough-borough, England, 12-13 Nov., 2012
Paper in proceeding
2012

Diversity gains in random line of sight and rich isotropic multipath environment

Jan Carlsson, Ulf Carlberg, Per-Simon Kildal
LAPC 2012 - 2012 Loughborough Antennas and Propagation Conference
Paper in proceeding
2012
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MIMO LTE OTA measurements in reverberation chamber: rich isotropic reference environment makes agreement with theoretical system model

Per-Simon Kildal, Charlie Orlenius, Ulf Carlberg
Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012. Prague, 26-30 March 2012, p. 1536-1539
Paper in proceeding
2011
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Including embedded element antenna characteristics in winner ii channel models and comparison with isotropic propagation environment

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson
Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011. Rome, 11-15 April 2011, p. 2038-2041
Paper in proceeding
2011
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About Random LOS in Rician Fading Channels for MIMO OTA Tests

Ahmed Hussain, Per-Simon Kildal, Ulf Carlberg et al
ISAP2011, Jeju, Korea, 15-18 October 2011
Paper in proceeding
2011

Study of Random Line-of-Sight Caused by Arbitrary User Positions and Orientations with Application to MIMO OTA Measurements of Wireless Devices

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson
ISAP2011, Jeju, Korea, 15-18 October 2011
Paper in proceeding
2010

About measurements in reverberation chamber and isotropic reference environment

Jan Carlsson, Ulf Carlberg, Ahmed Hussain et al
20th International Conference on Applied Electromagnetics and Communications, Dubrovnik, Croatia, September 2010
Paper in proceeding
2010

Analysis of statistical uncertainties involved in estimating ergodic MIMO capacity and diversity gain in Rayleigh fading environment

Ahmed Hussain, Ulf Carlberg, Jan Carlsson et al
20th International Conference on Applied Electromagnetics and Communications, Dubrovnik, Croatia, September 2010
Paper in proceeding
2010

Ray based multipath simulation tool for studying convergence and estimating ergodic capacity and diversity gain for antennas with given far-field functions

Ulf Carlberg, Jan Carlsson, Ahmed Hussain et al
20th International Conference on Applied Electromagnetics and Communications, Dubrovnik, Croatia, September 2010
Paper in proceeding
2010

On using isotropic multipath as reference environment for OTA performance: Ray-based multipath simulation tool for studying convergence and uniqueness of different user-related statistical expectations when estimating ergodic capacity and diversity gain

Ulf Carlberg, Per-Simon Kildal, Ahmed Hussain et al
European Cooperation in the field of Scientific and Technical Research - COST2100, Alborg, Denmark, April 2010
Other conference contribution
2010

On using isotropic multipath as reference environment for OTA performance: Uncertainty due to convergence of statistical expectation when estimating ergodic capacity and diversity gain

Per-Simon Kildal, Ahmed Hussain, Ulf Carlberg et al
European Cooperation in the field of Scientific and Technical Research - COST2100, Alborg, Denmark, April 2010
Other conference contribution
2009

Numerical study of position stirring and frequency stirring in loaded reverberation chamber

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson
IEEE Transactions on Electromagnetic Compatibility. Vol. 51 (1), p. pp. 12-17
Journal article
2008

Simulation of MIMO antenna systems in simulink and embedded Matlab

Mats Viberg, T Boman, Ulf Carlberg et al
Nordic Matlab Users Conference, Stockholm, Sweden, November 2008
Paper in proceeding
2007

Comparison of different loading configurations and numerical models of reverberation chambers

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson et al
2007 International Symposium on Antennas and Propagation, Niigata, JAPAN, 21-24 August 2007
Paper in proceeding
2007

Reducing Sidelobes from Blocking Struts by Metamaterials Cloaking and Shape Optimization

Per-Simon Kildal, Eva Rajo, Ulf Carlberg et al
29th ESA Antenna Workshop on multiple beam and reconfigurable antennas, 18-20 April 2007
Journal article
2007

Numerical study of different loading configurations and stirring methods of reverberation chambers

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson et al
EMB07 - The Fourth Swedish Conference on Computational Electromagnetics - Methods and Applications, Lund, October 18-19, 2007
Paper in proceeding
2006

Efficient modeling of reverberation chambers using method of moments with cavity Green's function calculated by Ewald summation

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson
Antenn 06 in Linköping, May 2006
Paper in proceeding
2006

Investigation of heavily loaded reverberation chamber for testing of wideband wireless units

Charlie Orlenius, M. Franzen, Per-Simon Kildal et al
IEEE AP-S International Symposium, Albuquerque, N.M., July 2006, p. 3569-3572
Paper in proceeding
2006

Numerical Study of Position and Frequency Stirring in Loaded RC

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson
Svenska Antennmätsällskapet (SAMS), Kalmar, 29 November 2006
Magazine article
2006

Designing reverberation chambers for measurements of small antennas and wireless terminals: accuracy, frequency resolution, lowest frequency of operation, loading and shielding of chamber

Per-Simon Kildal, Charlie Orlenius, Jan Carlsson et al
First European Conference on Antennas and Propagation (EuCAP), 2006, Nice, France, 6 - 10 November 2006
Paper in proceeding
2006

Fast numerical model of reverberation chambers with metal stirrers using moment method and cavity Green's function calculated by Ewald summation

Ulf Carlberg, Per-Simon Kildal, A. Kishk
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), p. 2827-2830
Paper in proceeding
2005

Numerical modelling of reverberation chamber using method of moments and Ewald summation

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson
IEEE AP-S International Symposium Washington D.C., 3-8 July 2005. Vol. 1B, p. 344-347
Other conference contribution
2005

Efficient computation of high Q resonator realized by thin film multilayer metal/dielectric structure

Ulf Carlberg, A. Eriksson, Per-Simon Kildal
Microwave Optical and Technology Letters. Vol. 44 (1), p. 48-51
Journal article
2005

Extracting electrical material parameters of electrically large dielectric objects from reverberation chamber measurements of absorption cross section

Paul Hallbjörner, Ulf Carlberg, Kent Madsen et al
IEEE Transactions on Electromagnetic Compatibility. Vol. 47 (2), p. 291-303
Journal article
2005

Study of antennas in reverberation chamber using method of moments with cavity Green’s function calculated by Ewald summation

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson
IEEE Transactions on Electromagnetic Compatibility. Vol. 47 (4), p. 805-814
Journal article
2004

A method of moments solution of a 2D reverberation chamber using G1DMULT and asymptotic extraction

Kristian Karlsson, Jan Carlsson, Ulf Carlberg et al
IEEE AP-S International Symposium, Monterey, California, June 2004
Paper in proceeding
2004

A Fast Mode Analysis for Waveguides of Arbitrary Cross Section With Multiple Regions by Using a Spectrum of Two-Dimensional Solutions and Asymptotic Waveform Evaluation

Jian Yang, Ulf Carlberg, Per-Simon Kildal et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 52 (6), p. 1615-1621
Journal article
2004

A fast algorithm for cylindrical multimaterial structures of arbitrary cross section by applying asymptotic waveform evaluation in a spectrum of two-dimensional solutions

Jian Yang, Ulf Carlberg, Per-Simon Kildal
EMB 04 - Computational Electromagnetics: Methods and Applications, 18-19 Oct 2004, Gothenburg, Sweden
Paper in proceeding
2004

Method of moments solution of reverberation chamber using spectral domain techniques and asymptotic extraction

Kristian Karlsson, Jan Carlsson, Ulf Carlberg et al
EMB 04 - Computational Electromagnetics: Methods and Applications, 18-19 Oct 2004, Gothenburg, Sweden
Paper in proceeding
2004

A method of moments solution for a mechanical mode stirrer in a reverberation chamber using spectral domain techniques

Kristian Karlsson, Jan Carlsson, Ulf Carlberg et al
Joint COST 273/284 Workshop, Chalmers University of Technology, Göteborg, Sweden, 7-9 June 2004
Paper in proceeding
2004

Calculated and measured absorption cross sections of lossy objects in reverberation chamber

Ulf Carlberg, Per-Simon Kildal, Andreas Wolfgang et al
IEEE Transactions on Electromagnetic Compatibility. Vol. 46 (2), p. 146-154
Journal article
2004

Numerical study of mode stirring in reverberation chambers using moment method and Ewald summation

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson
EMB 04 - Computational Electromagnetics: Methods and Applications, 18-19 Oct 2004, Gothenburg, Sweden
Paper in proceeding
2004

G2DMULT - A fast algorithm for analysis and design of base station antennas

Jian Yang, Ulf Carlberg, Per-Simon Kildal
Joint COST 273/284 Workshop, Chalmers University of Technology, Göteborg, Sweden, 7-9 June 2004
Paper in proceeding
2004

Comparison of different numerical modeling techniques for reverberation chamber: Initial 2D study

Ulf Carlberg, Per-Simon Kildal, Jan Carlsson et al
IEEE AP-S International Symposium, Monterey, California, June 2004
Paper in proceeding
2003

Efficient analysis of cylindrical antennas by applying asymptotic waveform evaluation in a spectrum of two-dimensional solutions

Jian Yang, Per-Simon Kildal, Ulf Carlberg
Antenn 03 in Kalmar, May 13-15, 2003
Paper in proceeding
2003

Moment Method solutions of cylindrical waveguides by searching in a spectrum of two-dimensional solutions.

Ulf Carlberg, Jian Yang, Per-Simon Kildal
IEEE AP-S International Symposium, Columbus, Ohio, June 2003
Paper in proceeding
2003

Measurements with lossy objects in reverberation chambers and their effect on the polarization and elevation dependence of the field statistics

Ulf Carlberg, Per-Simon Kildal, A. Wolfgang et al
Antenn 03 in Kalmar, May 13-15, 2003
Paper in proceeding
2003

Characterization of lossy cylinder in reverberation chamber by computed and measured absorption cross sections.

Ulf Carlberg, Per-Simon Kildal, A. Wolfgang et al
IEEE AP-S International Symposium, Columbus, Ohio, June 2003
Paper in proceeding
2003

Calculating mode solutions of classical and novel cylindrical waveguides by using the Moment Method algorithm G2DMULT

Ulf Carlberg, Jian Yang, Per-Simon Kildal
Antenn 03 in Kalmar, May 13-15, 2003
Paper in proceeding
2002

Calculation of absorption cross section of lossy object used when measuring antennas in reverberation chambers

Ulf Carlberg, Zvonimir Sipus, Per-Simon Kildal
IEEE AP-S International Symposium, San Antonio, Texas, June 2001
Paper in proceeding

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