Q-Loading of Colpitts-Based Mass-Sensing Oscillators in Resonator-based MEMS Airborne Particulate Matter (PM) Sensors
- Resource Type
- Conference
- Authors
- Azadmehr, Mehdi; Paprotny, Igor; Berg, Yngvar
- Source
- 2019 IEEE International Conference on Consumer Electronics (ICCE) Consumer Electronics (ICCE), 2019 IEEE International Conference on. :1-4 Jan, 2019
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Engineering Profession
Fields, Waves and Electromagnetics
General Topics for Engineers
Photonics and Electrooptics
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Transportation
Oscillators
Logic gates
Sensors
Loading
Resonant frequency
Inductors
Topology
Colpitts Oscillator
Mass loading
FBAR
Mass sensing
- Language
- ISSN
- 2158-4001
Air pollution is a major world-wide health concern, in particular the adverse effects resulting of exposure to fine airborne particulate matter (PM 2.5 ). Oscilator topologies have thus far been an overlooked aspect of MEMS based gravimetric PM-sensors. In this work, we analyze the effect of mass loading on selected Colpitts oscillator topologies. Five different Colpitts oscillators are considered in this paper, single ended and differential versions of common gate and common drain and an inverter-based Colpitts oscillator. Our results show that the Complementary common gate topology is the most stable regarding change in frequency and amplitude. The frequency of the complementary common gate increases by 2.5% to 114MHz when the loading is increased to 3KΩ and 11%. with a loading of 6KΩ.