Bernhard Boser (Advisor)

Design Issues For Differential Z-Axis Accelerometers

Monico Ortiz
Bernhard E. Boser
Roger T. Howe
1996

Accelerometers which are sensitive to inputs perpendicular to the substrate (2-Axis) are the key to monolithic three axis acceleration sensing. The inherent asymmetry of the capacitive interface of the Z-Axis sensing element fabricated in surface micromachining technology with a single...

Frequency Modulated Gyroscopes

Mitchell Kline
Bernhard E. Boser
Seth Sanders
Liwei Lin
2013

MEMS gyroscopes for consumer devices, such as smartphones and tablets, suffer from high power consumption and drift which precludes their use in inertial navi- gation applications. Conventional MEMS gyroscopes detect Coriolis force through measurement of very small displacements on a sense axis, which requires low-noise, and consequently high-power, electronics. The sensitivity of the gyroscope is im- proved through mode-matching, but this introduces many other problems, such as low bandwidth and unreliable scale factor. Additionally, the conventional Coriolis force detection method...

Position Sensing for Electrostatic Micropositioners

Naiyavudhi Wongkomet
Bernhard E. Boser
Paul R. Gray
Albert A. Pisano
1998
This research investigates the design of capacitive position sensing circuits for electrostatic micropositioners. The goals of this investigation are to understand the interaction among the micropositioners, the driving circuits, and the position sensing ...

Micro Accelerometer Design with Digital Feedback Control

Mark Lemkin
David M. Auslander
Bernhard E. Boser
Albert P. Pisano
1997
In this work, design of capacitive accelerometers with CMOS electronics is investigated. The goal of this investigation is to form accurate behavioral models at three different levels of abstraction: system, electrical, and mechanical. Analysis of these models permits a deeper understanding of both accelerometer design and design trade-offs. The results of this work are used to obtain an accurate prediction of accelerometer performance. At the system level, simultaneous force-balancing and analog-to-digital...

Capacitive Power Transfer

Mitchell Kline
Bernhard E. Boser
Seth R. Sanders
2011

The simplicity and low cost of capacitive interfaces makes them very attractivefor wireless charging stations and galvanically isolated power supplies. Major benefits include low electromagnetic radiation and the amenability of combined power and data transfer over the same interface.

We present a capacitive power transfer circuit using series resonance that enables efficient high frequency, moderate voltage operation through soft-switching. An included analysis predicts fundamental limitations on...

Amy Wu

Alumni
Electrical Engineering and Computer Sciences
Professor Bernhard E. Boser (Advisor)
M.S. 2008

Yu-Ching Yeh

Alumni
Electrical Engineering and Computer Sciences
Professor Bernhard E. Boser (Advisor)
M.S. 2016

Naiyavudhi Wongkomet

Alumni
Electrical Engineering and Computer Sciences
Professor Bernhard E. Boser (Advisor)
Ph.D. 1998

Manu Seth

Alumni
Electrical Engineering and Computer Sciences
Professor Bernhard E. Boser (Advisor)
M.S. 2004

Anshi Liang

Alumni
Electrical Engineering and Computer Sciences
Professor Bernhard E. Boser (Advisor)
M.S. 2004