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Papers

01
May
2015

This paper presents the design and optimization of a 1.2-meters single-layer planar contoured beam reflectarray in Ku-band. The reflectarray is optimized to fulfill the requirements of a Direct...

12
Apr
2015
Co-authors:
C. Nardini / C. Dreyer

This paper describes the pattern computations of the UHF antennas mounted on the spacecraft of the EXOMARS mission. The analyses are made by the higher-order Method of Moments (MoM) add-on to...

12
Apr
2015

This paper presents the analysis and optimization of  a 1 meter single-layer curved contoured beam reflectarray in Kuband. The curved reflectarray is designed to radiate a contoured beam over a...

12
Apr
2015

This paper presents two methods related to modelling of reflector antenna struts and surrounding structural features such as satellite platforms. One method is a MoM-based strut model and...

12
Apr
2015

This paper presents two new modelling algorithms that were recently added to the commercially available GRASP software package for electrically large antenna and scattering problems. In particular...

06
Nov
2014

An efficient Body of Revolution Method of Moments formulation is presented in which the unknown surface current density on the generatrix of the rotationally symmetric scatterer is expanded in...

01
Oct
2014
Co-authors:
P. C. Hansen, Department of Applied Mathematics and Computer Science, DTU, Denmark

An alternative parameter-free adaptive approach for the grouping of the basis function patterns in the multilevel fast multipole method is presented, yielding significant memory savings compared...

01
Sep
2014
Co-authors:
P. C. Hansen, Department of Applied Mathematics and Computer Science, DTU, Denmark

The multi-level fast multipole method (MLFMM) for a higher order (HO) discretization is demonstrated on high-frequency (HF) problems, illustrating for the first time how an efficient MLFMM for HO...

07
Jul
2014
Co-authors:
P. C. Hansen, Department of Applied Mathematics and Computer Science, DTU, Denmark

Results using a new translation operator for the Multi-Level Fast Multipole Method are presented. Based on Gaussian beams, the translation operator allows a significant portion of the plane-wave...

07
Apr
2014
Co-authors:
P. C. Hansen, Department of Applied Mathematics and Computer Science, DTU, Denmark

The Multilevel Fast Multipole Method (MLFMM) allows for a reduced computational complexity when solving electromagnetic scattering problems. Combining this with the reduced number of unknowns...

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