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ICESTARS prominently presented at ECMI 2010

The ICESTARS partners presented their research at ECMI 2010 in two sessions on "Integrated Circuit/EM Simulation and Design Technologies for Radio Systems". First the overall project and its objectives were presented (see full presentation). The symposia's sessions then detailed the successful application of the developed algorithms and methodologies.

Kai Bittner (University of Wuppertal), Emira Dautbegovic (Infineon Technologies AG): “Wavelet algorithm for circuit simulation”
A new adaptive circuit simulation algorithm based on spline wavelets: Unknown voltages and currents are expanded into a wavelet representation defined as the solution of nonlinear equations derived from the circuit equations by a Galerkin discretization. (…see full presentation)

Hans Georg Brachtendorf (FH Oberösterreich): “Entrainment phenomena in nonlinear oscillations”
Abstract Entrainment or injection locking is the underlying effect of synchronization as observed in a variety of fields. Recent years have seen various circuit designs using injection locking for, e.g., the design of quadrature oscillators or circuits exhibiting low phase noise. (... see full presentation)

Jan ter Maten (TU Eindhoven), Jarmo Ensio Virtanen, Mikko Honkala, Mikko Hulkkonen (all three AALTO University): “Estimation of initial conditions for harmonic balance analysis of free-running oscillators”
The poor initial conditions for harmonic balance analysis (HB) of free-running oscillators may lead to unsuccessful convergence or will at least require a great number of iterations to succeed. Algorithms to find the operating frequency of a free-running oscillator are presented.  (... see full presentation)

Wim Schoenmaker (MAGWEL, Belgium): "Software developments for a transient electromagnetic potential fields solver"
A new set up of equations for the electromagnetic scalar potential in the transient regime leads to a new treatment of interface conditions and boundary conditions. The proposed system is numerically robust, its robustness being demonstrated by simulating switching behavior of on-chip inductors. (... see full presentation)

Sascha Baumanns, Michael Matthes (University of Cologne): "Modeling and numerical analysis of coupled circuit and electromagnetic (EM) simulation" 
Differential-algebraic equations (DAEs) and partial differential equations play an important part in modeling circuits with EM devices. In ICESTARS Maxwell's equations (modeling circuit’s EM devices) are coupled to DAEs describing topology and behavior of other devices in the circuit. (… see full presentation)

Bernhard Klaassen, Tanja Clees (Fraunhofer Institute SCAI), Caren Tischendorf (University of Cologne): “Mixed-level circuit and device simulation including parameter sensitivity analysis”
For an integrated circuit featuring parameter sensitivity electrical and device simulation are coupled, trying a full-system approach including all parts of the equations into one large discretised nonlinear system. (… see full presentation)

Caren Tischendorf (University of Cologne),  Ricardo Riaza (University of Madrid): “Structural characterization of circuit configurations with undamped oscillations”
Undamped oscillations are characterised by purely imaginary eigenvalues in circuit dynamics. Such oscillations are well-known for pure inductive-capacitive circuits. Amongst others, their properties are discussed with regard to the analysis of proper oscillations in linear circuits and in nonlinear problems. (... see full presentation)

ECMI - European Consortium for Mathematics in Industry
Realizing the need of interaction between universities and research groups in industry, in 1986, ten European Mathematical Institutes have founded the European Consortium for Mathematics in Industry (ECMI) with the intention of offering their collective knowledge and expertise to European industry.
The major ECMI objective is to promote the use of mathematical models in industry. Engineers, applied scientists and mathematicians working in industry can benefit from a close collaboration with applied mathematicians from universities having the relevant skills and knowledge.