Title :
Electronic Detection Strategies for a MEMS-Based Biosensor
Author :
Burnett, Ros ; Harris, Alan ; Ortiz, Philip ; Hedley, J. ; Burdess, J. ; Keegan, N. ; Spoors, J. ; McNeil, C.
Author_Institution :
Sch. of Mech. & Syst. Eng., Newcastle Univ., Newcastle upon Tyne, UK
Abstract :
This work reports on the development of control electronics for a resonant mode biosensor. The laboratory demonstrated sensor initially showed a signal-to-noise ratio of -100 dB. With the application of half-frequency drive, frequency down conversion, appropriate filtering, and digital signal processing, a cost-effective electronic solution demonstrated a signal-to-noise ratio of +30 dB. This paper highlights important aspects in the design of integrated solutions to microelectromechanical systems-based sensors.
Keywords :
biosensors; microsensors; MEMS-based biosensor; cost-effective electronic solution; digital signal processing; electronic detection strategy; frequency downconversion; half-frequency drive; laboratory demonstrated sensor; microelectromechanical systems-based sensors; resonant mode biosensor; signal-to-noise ratio; Digital signal processing; Drives; Electrodes; Mixers; Power harmonic filters; Resonant frequency; Vibrations; Biosensor; digital signal processing (DSP); microelectromechanical systems (MEMS); radio frequency (RF) engineering; signal conditioning; signal processing;
Journal_Title :
Microelectromechanical Systems, Journal of
DOI :
10.1109/JMEMS.2012.2219294
