Results
author = "Rius Casals, Juan Manuel"
> : "Method of moments"
(x)
Novel monopolar MFIE MoM-discretization for the scattering analysis of small objects
Description :
We present a novel method of moments (MoM)-magnetic field integral equation (MFIE) discretization that performs closely to the MoM-EFIE in the electromagnetic analysis of moderately small objects. This new MoM-MFIE discretization makes use of a new set of basis functions that we name monopolar Rao-W...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
New block ILU preconditioner scheme for numerical analysis of very large electromagnetic problems
Description :
Large electromagnetic scattering and radiation
problems are tackled by iterative solvers, which require the use of
huge preconditioners. Most often, the incomplete LU decomposition
(ILU) of the preconditioner is applied to the system matrix at
each iteration. However, the preconditioner ILU cannot b...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Preconditioning techniques in the analysis of finite metamaterial slabs
Description :
In the method of moments (MoM) electric field integral equation (EFIE) analysis of slabs of metamaterials, we show that a left-preconditioning scheme by blocks gathering interactions between basis functions belonging to each basic cell of the metamaterial reaches convergence in less iterations and w...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
On the testing of the magnetic field integral equation with RWG basis functions in method of moments
Description :
For electromagnetic analysis using method of moments (MoM), three-dimensional (3-D) arbitrary conducting surfaces are often discretized in Rao, Wilton and Glisson basis functions. The MoM Galerkin discretization of the magnetic field integral equation (MFIE) includes a factor Ω0 equal to the solid a...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Efficient computation of the effect of wire ends in thin wire analysis
Description :
Computationally efficient algorithms are presented for the computation of the effect of flat wire ends (end caps) in the common thin wire model. A uniform charge distribution over the surface of the end cap is assumed, and the full or exact kernel of the electric field integral equation formulation ...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Integral formulation of the measured equation of invariance: a novel sparse matrix boundary element method
Description :
A novel integral formulation of the measured equation of invariance method is derived from the reciprocity theorem and implemented for perfectly conducting (PEC) 2-D scattering problems. This formulation uses the electric and magnetic Green's functions of the environment to obtain a matrix equation ...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Accurate numerical modeling of the TARA reflector system
Author(s) :
Heldring, Alexander
,
Rius Casals, Juan Manuel
,
Ligthart, Leo P.
,
Cardama Aznar, Ángel
Description :
The radiation pattern of the large parabolic reflectors
of the Transportable Atmospheric RAdar system (TARA), developed
at Delft University of Technology, has been accurately simulated.
The electric field integral equation (EFIE) formulation has
been applied to a model of the reflectors including th...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Method of moments enhancement technique for the analysis of Sierpinski pre-fractal antennas
Author(s) :
Parrón Granados, Josep
,
Romeu Robert, Jordi
,
Rius Casals, Juan Manuel
,
Mosig, Juan R.
Description :
The numerical analysis of highly iterated Sierpinski
microstrip patch antennas by method of moments (MoM) involves
many tiny subdomain basis functions, resulting in a very large
number of unknowns. The Sierpinski pre-fractal can be defined
by an iterated function system (IFS). As a consequence, the
...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Fast direct solution of method of moments linear system
Author(s) :
Heldring, Alexander
,
Rius Casals, Juan Manuel
,
Tamayo Palau, José María
,
Parrón Granados, Josep
,
Úbeda Farré, Eduard
Description :
A novel algorithm, the compressed block decomposition (CBD), is presented for highly accelerated direct (non iterative) method of moments (MoM) solution of electromagnetic scattering and radiation problems. The algorithm is based on a block-wise subdivision of the MoM impedance matrix. Impedance mat...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Harmonic balance algorithms for the nonlinear simulation of HTS devices
Author(s) :
Collado Gómez, Juan Carlos
,
Mateu Mateu, Jordi
,
Parrón Granados, Josep
,
Pons, J.
,
O'Callaghan Castellà, Juan Manuel
Description :
This paper describes the application of Harmonic Balance algorithms to predict nonlinear effects in planar High Temperature Superconductors (HTS) microwave circuits. The resulting algorithms are fast and efficient and can be used both for the characterization of the nonlinearities in the HTS materia...
Repository :
UPCommons - E-prints UPC
Language(s) :
English