Patent ID: 7495882
Filing Date: 2009-02-24
Classification: H01G,H03J

Abstract:
1. Electronic component comprising: at least one micro-electromechanical capacitor with adjustable capacitance comprising two electrodes free to move with respect to each other, and means to create an electrostatic force capable of moving one of the two electrodes with respect to the other electrode and thus adjusting the capacitance of the capacitor, wherein said means to create an electrostatic force comprises a control circuit including: a loop with a measurement input, a control input, and an output, and a current source outputting a measurement current to the measurement input; and wherein said loop comprises: a comparator having a first input connected to the measurement input, a second input connected to the control input, and an output providing a comparison signal, first and second DC current sources outputting respective currents of equal intensities and reverse polarities, and a switch selectively connecting the first DC current source or the second DC current source to the measurement input, depending on the comparison signal.