Papers – Page 1042 – TechConnect Briefs

Circuit Simulation of Quantum Well Bistable Laser Diodes

Madhan M.G., Vaya P.R., Gunasekaran N., Anna University, IN

A large signal electrical equivalent circuit for the multi quantum well bistable laser diode has been developed from the rate equations. The dc and transient analysis are carried out using PSPICE circuit simulator. It is [...]

Modeling a Piezoelectric Actuator Using a Transformer Equivalent Circuit

Oms-Elisabelar F., Bergaud C., Nicu L., Martinez A., CNRS, FR

In this paper, we describe both the static and dynamic behaviors of an AFM-like piezoelectric actuator using a transformer equivalent circuit in which both the electrical and mechanical portions are represented by electrical equivalencies. The [...]

A Neural Network Approach for the Identification of Micromachined Accelerometers

Gaura E.I., Steele N., Rider R.J., Coventry University, UK

The paper presents the identification procedure for a nonlinear accelerometer using a neural network. Simulation results obtained in SPICE and Matlab show good agreement between the behaviour of the sensor over its entire working range [...]

High-Fidelity and Behavioral Simulation of Air Damping in MEMS

Turowski M., Chen Z., Prezekwas A., CFD Research Corporation, US

The paper presents simulations of air damping in MEMS, including squeeze-film and viscous dissipation, using different level models: 3D numerical solution of Navier-Stokes equations (using CFD-ACE from CFDRC), and circuit/behavioral model (in SPICE and Saber/MAST [...]

Optimized Behavioral Model of a Pressure Sensor Including the Touch-Down Effect

Peters D., Bechtold St., Laur R., University of Bremen, DE

The complexity of microsystems is steadily increasing due to the scaling of microelectronic as well as for example mechanical, optical or fluidic devices. In order to be able to get good designs fast, one has [...]

Coupled Package-Device Modeling for MEMS

Bart S.F., Zhang S., Rabinovich V.L., Cunningham S., Microcosm Technologies, Inc., US

Microelectromechanical Systems (MEMS), by their nature as sensors and actuators, require application specific packaging. The package is the near environment of the MEMS device and hence has a direct effect on its thermal behavior, on [...]

Visual Modeling and Design of Microelectromechanical System (MEMS) Transducers

Dewey A., Icoz E., Duke Univeristy, US

Microelectromechanical Systems (MEMS) integrates miniaturized mechanical structures with electronics to extend the benefits of planar integrated circuit technology to a broader class of systems. To realize the potential and growth of MEMS, new modeling, analysis, [...]

Partial-Element Equivalent-Circuit Model Simulation for Designing RF-Wireless Communication Products with Embedded Passive Components

Smith W.R., National Semiconductor Corporation, US

Rapidly increasing functionality and performance of RF/wireless communication products, along with mandated decreases in size, weight, and cost, have created a critical need to replace discrete, surface-mounted passive circuit components with embedded passives in substrate [...]

Compact Large-Displacement Model for Capacitive Accelerometer

Veijola T., Kuisma H., Lahdenperä J., Helsinki University of Technology, FI

A compact large-displacement model for a gas damped capacitive accelerometer is presented. The gas-film model has been derived from the modified nonlinear Reynolds equation, where the in uence of the gas rarefaction is included. The [...]

HEMT Optimization by Advanced RSM Models

Profirescu M.D., Dima G., Govoreanu B., Mitrea O., University Politehnica of Bucharest, RO

In this paper, the optimization of heterostructure devices using the Design of Experiments concept and advanced Response Surface Models is presented. As an example, the structural optimization of a pseudomorphic Al0.2Ga0.8As/In0.2Ga0.8As/GaAs pulse doped HEMT is [...]