Papers

Papers

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

The design and optimization of a single-layer multifaceted dual-polarization contoured beam reflectarray with different coverages in each polarization has been presented. The reflectarray is...

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

The 3D reconstruction algorithm of DIATOOL is applied to the BTS1940 antenna, recently measured at the DTU-ESA Spherical Near-Field Antenna Test Facility in Denmark. The antenna was measured...

07
Apr
2014

This paper presents an efficient technique for full-wave analysis of dielectric lenses with integrated feeding. The feeding section is analysed with a higher-order 3D-MoM algorithm, while the...

07
Apr
2014

The design and optimization of multi-faceted reflectarrays for satellite applications are presented. The objective of this work is to investigate the performance of a multi-faceted reflectarray...

07
Apr
2014

Two efficient analysis methods for the accurate modeling of electrically large dielectric lens antennas are presented. The first method is based on Double Physical Optics (PO), which takes into...

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...

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

The Physical Optics approximation is a widely used asymptotic method for calculating the scattering from electrically large bodies. It requires significant computational work and little memory,...

Pages