Patents by Inventor René BLATTMANN

René BLATTMANN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • AMPLIFIER CIRCUIT FOR AMPLIFYING AN OUTPUT SIGNAL OF A CAPACITIVE SENSOR
    Publication number: 20190036490
    Abstract: An amplifier circuit (AC) for amplifying an output signal (OS) of a capacitive sensor (M) comprises a first input terminal (AIN) to receive the output signal (OS) of the capacitive sensor (M) and a second input terminal (BIN) to receive a bias voltage (Vbias) of the capacitive sensor (M). The amplifier circuit (AC) comprises an amplifier (A) for amplifying the output signal (OS) and a control circuit (CF) arranged in a feedback loop (FL) of the amplifier (A) being configured to control a DC voltage level at an input connection (A1) of the amplifier (A). A bias voltage sensing circuit (BVS) senses a change of the level of the bias voltage (Vbias) at the second input terminal (BIN) and changes the bandwidth of the feedback loop (FL) in dependence on the sensed change of the level of the bias voltage (Vbias).
    Type: Application
    Filed: January 10, 2017
    Publication date: January 31, 2019
    Inventors: Lukas PERKTOLD, Mark NIEDERBERGER, René BLATTMANN