Patents Assigned to State of the Art, Inc.
  • Patent number: 8188832
    Abstract: A microchip resistor device is disclosed in which first and second resistive elements are formed on a substrate. The first resistive element has a first resistance value and a positive temperature coefficient of resistance (TCR) over a selected temperature range. The second resistive element has a second resistance value and a negative TCR over the selected temperature range. The first and second resistive elements do not overlap each other. The first and second resistive elements are operatively connected with one or more conductors to provide a current path between the two elements. The product of the first resistance value and the positive temperature coefficient of resistance is substantially equal in magnitude to the product of the second resistance value and the negative temperature coefficient of resistance.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: May 29, 2012
    Assignee: State of the Art, Inc.
    Inventors: Amitabh Das, Robert J. Hufnagel, Christopher R. Grabbe
  • Patent number: 8143969
    Abstract: A multiple tap attenuator microchip device is disclosed. The device includes a substrate having two or more attenuator taps formed on a surface of the substrate. One or more ground contacts are also formed on the substrate surface and operatively connected to the attenuator taps. The attenuator taps each include a resistive network that is configured to provide a level of attenuation of an rf signal applied to the attenuator tap that is different from the attenuation level provided by the other attenuator tap(s).
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: March 27, 2012
    Assignee: State of the Art, Inc.
    Inventors: Amit Das, Robert J. Hufnagel, Jamie M. Heddens
  • Patent number: 7852171
    Abstract: A microchip device is disclosed that combines a signal attenuator and a frequency filter. An embodiment of the device includes an input contact, an output contact, and a ground contact formed on the surface of a substrate. Resistive elements formed on the substrate interconnect the contacts. At least the input contact includes a gap pattern formed therein that is dimensioned and arranged such that the input contact provides a reactive impedance characteristic. The combination of the resistance of the resistive elements and the reactive impedance characteristic of the input contact are selected to provide attenuation and frequency filtering of a high frequency signal input to the microchip device. A method of manufacturing the filter-attenuator microchip device is also described.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: December 14, 2010
    Assignee: State of the Art, Inc.
    Inventors: Amitabh Das, Robert J. Hufnagel