Patents by Inventor Esa Sihvola

Esa Sihvola 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).

  • Linearizer circuit
    Patent number: 7444252
    Abstract: A linearizer circuit which corrects inherent nonlinearity of a capacitive pressure sensor is provided. The linearizer is based on an operational amplifier configuration including a feedback network of switched capacitor type that is switched between a first switching phase and a second switching phase .In this switched capacitor configuration, DC gain of the operational amplifier configuration in the second switching phase can be adapted to realize a linearization function required to substantially linearize a non-linear capacitance-pressure characteristic of a capacitive pressure sensor when the capacitive pressure sensor is connected to be part of the feedback network.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: October 28, 2008
    Assignee: Micro Analog Systems OY
    Inventor: Esa Sihvola
  • Linearizer circuit
    Publication number: 20060255780
    Abstract: The invention relates to a linearizer circuit which corrects inherent nonlinearity of a capacitive pressure sensor. The linearizer is based on an operational amplifier configuration comprising a feedback network of switched capacitor type (C0-C5,SW1-SW8) which is switched between a first switching phase (A) and a second switching phase (B). In such a switched capacitor configuration, dc gain of the operational amplifier configuration in the second switching phase (B) can be adapted to realize a linearization function required to substantially linearize a non-linear capacitance-pressure characteristic of a capacitive pressure sensor (C) when the capacitive pressure sensor is connected to be part of the feedback network.
    Type: Application
    Filed: May 8, 2006
    Publication date: November 16, 2006
    Applicant: Micro Analog Systems Oy
    Inventor: Esa Sihvola