Patents by Inventor Frithjof Koppehele

Frithjof Koppehele 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).

  • Remotely powered intermediate amplifier for communications transmission
    Patent number: 4170761
    Abstract: A remotely powered intermediate amplifier for communications transmission incorporates two sectional amplifiers and a filter circuit interconnecting the output of the first sectional amplifier with the input of the second sectional amplifier.
    Type: Grant
    Filed: March 8, 1978
    Date of Patent: October 9, 1979
    Assignee: Siemens Aktiengesellschaft
    Inventor: Frithjof Koppehele
  • Remotely fed intermediate amplifier for communication lines
    Patent number: 4114107
    Abstract: An intermediate amplifier arrangement for communication lines in which the intermediate amplifier is divided into at least two partial amplifiers each having a capacitance between the outer conductor of the coaxial transmission line and the amplifier and connected to feed supply voltages such that the amplifiers are uncoupled from each other as to high frequency and utilizing low inductance and low resonance capacitors so as to obtain very low power consumption and large cyclical attenuation.
    Type: Grant
    Filed: May 11, 1977
    Date of Patent: September 12, 1978
    Assignee: Siemens Aktiengesellschaft
    Inventors: Helmut Bauch, Karl Heinz Mohrmann, Frithjof Koppehele