Patents by Inventor Franz Waltl

Franz Waltl 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).

  • Circuit for the selective activation of a plurality of antennas from a common end stage
    Patent number: 6850189
    Abstract: A circuit for the selective activation of a plurality of antennas (L1 to L4) from a common end stage (8) contains a first selector switch (10) at a terminal (6) of the end stage (8), the switch contacts (12, 22) of which are each connected to a switch contact (20, 26) and via an antenna (L1, L2) each to one fixed contact each of a twin selector switch (14, 24). The fixed contacts of the twin selector switch are each connected via a further antenna (L3, L4) to the other terminal (18) of the end stage and these are also connected to the other switch contacts (16, 28) of the twin selector switch.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: February 1, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventors: Johannes Ilg, Franz Waltl
  • Circuit for the selective activation of a plurality of antennas from a common end stage
    Publication number: 20030151552
    Abstract: A circuit for the selective activation of a plurality of antennas (L1 to L4) from a common end stage (8) contains a first selector switch (10) at a terminal (6) of the end stage (8), the switch contacts (12, 22) of which are each connected to a switch contact (20, 26) and via an antenna (L1, L2) each to one fixed contact each of a twin selector switch (14, 24). The fixed contacts of the twin selector switch are each connected via a further antenna (L3, L4) to the other terminal (18) of the end stage and these are also connected to the other switch contacts (16, 28) of the twin selector switch.
    Type: Application
    Filed: February 11, 2003
    Publication date: August 14, 2003
    Inventors: Johannes Ilq, Franz Waltl