Compact Modeling and Model Order Reduction

New Numerical Techniques and Tools in SUGAR for 3D MEMS Simulation

Bai Z., Bindel D., Clark J., Demmel J., Pister K., Zhou N., University of California Davis, US

SUGAR is a modified nodal analysis package for 3D MEMS simulations that owes its heritage and its name to the SPICE family of circuit simulation. SUGAR has undergone the stage of proof-of-concept which showed that [...]

Using Scalar Algebraic Multigrid Solvers for Efficient 3-D Stress Analysis of Microfabricated Structures

Mijalkovic S., Delft University of Technology, NL

A methodology to improve the performance of iterative solvers in 3-D stress analysis using scalar algebraic multigrid (AMG) solvers has been presented. The principle idea is to split the global system of coupled stress governing [...]

Using Pseudo Transient Continuation and the Finite Element Method to Solve the Nonlinear Poisson-Boltzmann Equation

Shestakov A.I., Milovich J.L., Noy A., Lawrence Livermore National Laboratory, US

The nonlinear Poisson-Boltzmann (PB) eequation is solved using Pseudo Transient Continuation. The PB solver is constructed by modifying the nonlinear diffusion modeule of a 3D, massively parallel, unstructured grid, finite element, radiation-hydrodynamics code. The solver [...]

Experimental Determination of Electrical, Metallurgical, and Physical Gate Lengths of Submicron MOSFET’s

Zhou X., Lim K.Y., Nanyang Technological University, SG

A simple, empirically-based method is developed for extraction of submicron surface-channel MOSFET’s effective channel length (Leff) with critical-dimension correction to poly-gate length (Lg) and correlation to metallurgical channel length (Lmet). A self-consistent compact model for [...]

Compact Modeling of Avalanche Breakdown in pn-Junctions for Computer-Aided ESD Design (CAD for ESD)

Subramanian Y., Darling R.B., University of Washington, US

This paper presents and validates compact, physically-based electrothermal models of the avalanche process in pn junctions for use in network simulators (e.g. Saber). Self-heating effects are also included. This enables the simulation of large systems [...]

Compact Modeling and Circuit Impact of a Novel Frequency Dependence of Capacitance in RF MOSFETs

Sudhama C., Joardar K., Whitfield J., Zlotnicka A., Motorola SPS, US

The exploration and modeling of high-frequency MOSFET phenomena are vitally important because MOSFETs are emerging as candidates for active devices in front-end RF circuits operating at more than 1GHz [1-2]. In this work we present [...]

A New Compact Model of Floating Gate Non-Volatile Memory Cells

Larcher L., Pavan P., Gattel F., Albani L., Marmiroli A., Università di Modena e Reggio Emilia, IT

This paper presents a new compact model of Floating Gate Non-Volatile Memory Cells using SPICE circuit elements. It features many advantages compared to previous models: it is simple and easy to implement and to update, [...]

Antiphase Design for Balanced Oscillators

Liu X., Sheng Z., Law C.L., Qian C., Sun Z., Nanyang Technological University, SG

A novel general design method, which is based on S-parameters and suitable for MMIC and MEMS, has been developed for antiphase balanced oscillators in this paper. To demostrate the design method, a new type of [...]

Full Wave Electromagnetic Analysis and Model Order Reduction for Complex Three Dimensional Structures

Balk I., He Y., IntelliSense Corporation, US

Progress in MEMS and packaging design has made significant changes in the requirements for modeling tools. In order to design a modern microdevice or interconnect system it is no longer sufficient to limit the analysis [...]

Table-Based Numerical Macromodeling for MEMS Devices

Wu J., Carley L.R., Carnegie Mellon University, US

In this paper, we present a table-based numerical macromodeling method in which a MEMS device is modeled by a set of numerical ordinary differential equations and model functions are represented by look-up tables of numerical [...]

Scalable Macromodels for Microelectromechanical Systems

Srinivasan V., Jog A., Fair R.B., Duke University, US

A fully automatic macromodeling methodology to generate scalable reduced-order models for microelectromechanical systems is presented in this paper. Krylov subspace methods are used to generate reduced-order models from detailed higher-order models of the device under [...]

Compact Model for the Squeezed-Film Damping Including the Open Border Effects

Veijola T., Ruokonen K., Tittonen I., Helsinki University of Technology, FI

A numerical model for the squeezed-film damping between moving rigid, rectangular surfaces is presented. The emphasis is on the nontrivial boundary conditions for the flow, accounting for the finite acoustic impedance of the surrounding gas [...]

A Design Approach for Robustness Improvement of Rate Gyroscopes

Acar C., Shkel A., University of California Irvine, US

This paper reports a design concept for robustness improvement of micromachined gyroscopes. The novelty of the approach is in expanding the design space of the device by increasing the degrees-of-freedom (DOF) of the system. The [...]

Boundary Independent Exact Thermal Model for Electronic Systems

Gerstenmaier Y.C., Pape H., Wachutka G., Siemens AG, Corporate Technology, DE

A compact thermal model is presented, which describes the hot spot (junction) temperatures and contact heat flows of electronic packages or systems in the stationary state. The model is exact provided that the underlying heat [...]

Macromodeling Temperature-Dependent Curl in CMOS Micromachined Beams

Iyer S., Lakdawala H., Fedder G.K., Mukherjee T., Carnegie Mellon University, US

Temperature sensitive curling is commonly observed in MEMS structures fabricated using a standard CMOS pro-cess. In this paper, a macromodel for vertical and lateral curling effects is derived by extending thermal multimorph theory for cantilever [...]

Papers: