Power-Efficiency Evolution of Capacitive Sensor Interfaces

Energy-Efficient Capacitive- Sensor Interfaces

INTEGRATED REFERENCE CIRCUITS FOR LOW-POWER CAPACITIVE SENSOR INTERFACES Doctoral Dissertation

OF DOCTORAL DISSERTATION AALTO UNIVERSITY SCHOOL OF SCIENCE AND TECHNOLOGY P.O. BOX 11000, FI-00076 AALTO http://www.aalto.fi Author Matti Paavola Name of the dissertation Manuscript submitted May 24, 2010 Manuscript revised August 24, 2010 Date of the defence October 1, 2010 Article dissertation (summary + original articles) Monograph Faculty Department Field of research Opponent(s) Supervisor...

Capacitive Interfaces For

Surface micromachining has become an established technology for inertial sensing. Compatibility with standard IC fabrication processes enables monolithic integration of the sensing element and interface electronics for reduced size and power dissipation, simplified packaging, and increased functionality. The need to resolve sub-Angstrom displacements poses a challenge on the interface. Capaciti...

A capacitive RF power sensor based on MEMS technology

Wideband 100 kHz–4 GHz power sensors are presented, which are based on sensing the electrostatic force between an RF signal line and a suspended membrane. The electrostatic force, which is proportional to the square of the rms signal voltage and thus to the signal power, results in a displacement of the suspended membrane. This displacement is detected capacitively, allowing the sensing of the ...

Integrated Low Power Ultrasound Sensor Interfaces

Imagine that the technical development can change the ultrasound measurement systems used for fetus feature detection from the large piece of machinery today, to a wireless coin size system tomorrow. The factor that has reduced the size of electronic systems over time is integration and integrated circuits. In this thesis circuit simulator models of complete ultrasound systems are used to desig...