Patents by Inventor Dietmar Ritter

Dietmar Ritter 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).

  • Electronic component operated with surface acoustic waves
    Patent number: 7969259
    Abstract: An apparatus includes a piezoelectric substrate having a signal line with a first electrical port and a second electrical port, and a first partial filter connected in series with a second partial filter. The partial filters are arranged between the electrical ports. The first partial filter includes a first serial transducer and a second serial transducer located in an acoustic path and in series branches of the signal line. The serial transducers are acoustically coupled with one another. The second partial filter includes a coupler transducer and an end-positioned transducer that are located in a double mode surface acoustic wave (DMS) path. The end-positioned transducer is positioned at an end of the signal line.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: June 28, 2011
    Assignee: Epcos AG
    Inventors: Andreas Detlefsen, Peter Kirchhofer, Dietmar Ritter
  • Electronic component operated with surface acoustic waves
    Publication number: 20060097824
    Abstract: An apparatus includes a piezoelectric substrate having a signal line with a first electrical port and a second electrical port, and a first partial filter connected in series with a second partial filter. The partial filters are arranged between the electrical ports. The first partial filter includes a first serial transducer and a second serial transducer located in an acoustic path and in series branches of the signal line. The serial transducers are acoustically coupled with one another. The second partial filter includes a coupler transducer and an end-positioned transducer that are located in a double mode surface acoustic wave (DMS) path. The end-positioned transducer is positioned at an end of the signal line.
    Type: Application
    Filed: December 16, 2003
    Publication date: May 11, 2006
    Inventors: Andreas Detlefsen, Peter Kirchhofer, Dietmar Ritter
  • Transducer structure that operates with acoustic waves
    Patent number: 7042132
    Abstract: For improved conformance of a filter operating with acoustic waves, a transducer structure is provided in which the separations between respectively two adjacent electrode fingers of an inter-digital transducer (IDTv) vary over the length of the transducer. The variation thereby preferably follows a continuous distribution function. Reactance filters that are provided with such filters in the serial branch show an improved electrical conformance in the transmission range.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: May 9, 2006
    Assignee: Epcos AG
    Inventors: Thomas Bauer, Martin Bünner, Andreas Detlefsen, Dietmar Ritter
  • Transducer structure that operates with acoustic waves
    Publication number: 20040090145
    Abstract: For improved conformance of a filter operating with acoustic waves, a transducer structure is proposed in which the separations between respectively two adjacent electrode fingers of an inter-digital transducer (IDTv) vary over the length of the transducer. The variation thereby preferably follows a continuous distribution function. Reactance filters that are provided with such filters in the serial branch show an improved electrical conformance in the transmission range.
    Type: Application
    Filed: September 12, 2003
    Publication date: May 13, 2004
    Inventors: Thomas Bauer, Martin Bunner, Andreas Detlefsen, Dietmar Ritter