Methodology of design of electronic circuit oscillators for QCM sensors in liquid media

This work deals with the development of a methodology for the design of electronic circuit oscillators for quartz crystal microbalance (QCM) applications in damping media. The developed methodology allows the design requirements of an oscillator topology to be obtained as a function of the resonator operating conditions (characteristics of the working media and of mass to sense). This methodology allows the oscillation condition to be studied and the critical values of the components, the possible oscillation areas and the optimal expressions that allow the losses maintaining the oscillation to be obtained.