Wachutka G. – TechConnect Briefs

Combined Device- and System-level Simulation of RF MEMS Switches

Schrag G., Künzig T., Niessner M., Wachutka G., Technical University of Münich, DE

We present two problem-adapted, tailored modeling approaches for RF-MEMS switches which, in principle, are applicable to any capacitive MEMS device. They are based on finite element analysis (FEA) combined with analytical, lumped-element, and reduced-order modeling [...]

Squeeze-Film Damping in Perforated Microstructures: Modeling, Simulation and Pressure-Dependent Experimental Validation

Niessner M., Schrag G., Iannacci J., Wachutka G., Münich University of Technology, DE

The reliable estimation of squeeze-film damping (SQFD) is a prerequisite for the design of many microelectromechanical systems (MEMS). The proper operation of several MEMS devices (e.g. accelerometers) often depends crucially on the damping forces, i.e. [...]

Electromechanical and Electromagnetic Simulation of RF-MEMS Complex Networks Based on Compact Modeling Approach

Iannacci J., Faes A., Kuenzig T., Niessner M., Wachutka G., Fondazione Bruno Kessler - FBK, IT

RF-MEMS, i.e. MicroElectroMechanical-Systems for Radio Frequency applications, have been attracting the interest of the scientific community for more than one decade, thanks to their high performance and large reconfigurability. The employment of RF-MEMS based devices [...]

Calibration and Validation Procedure for Reliable and Predictive High-level Transducer Models Suited for System-level Design

Khalilyulin R., Schrag G., Wachutka G., Münich University of Technology, DE

We present an elaborated parameter extraction and model validation procedure for high-level transducer models that are aimed for system-level design as well as for hardware-software co-simulation (Matlab/Simulink transducer model embedded in control circuitry) in order [...]

Automatically Generated and Experimentally Validated System-Level Model of a Microelectromechanical RF Switch

Niessner M., Schrag G., Wachutka G., Iannacci J., Margesin B., Münich University of Technology, DE

In this work, we present a mixed-level model of an electrostatically actuated and viscously damped ohmic radio frequency (RF) microelectromechanical switch, which provides an accurate physical description of the device behavior and is suitable for [...]

Detailed Analysis of Quantum-Effects in Nanowire Tunneling Transistors with Different Channel-Profiles

Heigl A., Wachutka G., TU Munich, DE

Combining the operational principle of the tunneling field effect transistor with the idea of a multigate channel control appears as an attractive option to avoid unwanted shortchannel effects in nanometer-scale MOS-devices. This motivated us to [...]

Physically-Based High-Level System Model of a MEMS-Gyroscope for the Efficient Design of Control Algorithms

Khalilyulin R., Schrag G., Wachutka G., Münich University of Technology, DE

We present a high-level model of a dual gimbaled mass gyroscope, which provides an accurate physical description of the impact of external and internal disturbances on the output signal, but which also allows for the [...]

Adaptive Control for Reducing the Effect of Damping on the Output Signal of Microgyroscopes

Khalilyulin R., Hauck T., Wachutka G., Münich University of Technology, DE

A mixed-level modeling methodology is employed to set up a full system simulation model for microgyroscopes together with the control circuitry in order to investigate the performance of novel adaptive closed-loop control strategies, which allow [...]

Modeling of the Cosmic Radiation-Induced Failure Mechanism in High Power Devices

Kaindl W., Soelkner G., Schulze H.-J., Wachutka G., Institute for Physics of Electrotechnology, DE

In order to achieve a more robust design of semiconductor power devices with enhanced hardness against cosmic radiation we have been working on a physical model which is able to explain and to visualize the [...]

Compact Models for Squeeze-Film Damping in the Slip Flow Regime

Sattler R., Wachutka G., Technical Univeristy of Münich, DE

We propose a mixed-level simulation scheme for squeeze film damping effects in microdevices, which makes it possible to include damping effects in system-level models of entire microsystems in a natural, physically-based and flexible way. Our [...]