Patents by Inventor Roland Ahlers

Roland Ahlers 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).

  • Limiter for broadband high-frequency signals
    Patent number: 9391352
    Abstract: A limiter for high-frequency signals has an input, whereas the high-frequency signal is supplied to the limiter at its input. The limiter provides several limiting stages which are electrically connected to the input. Each limiting stage is a series circuit with an unbiased diode and a Zener diode which does not serve to bias the diode, so that the high-frequency signal is electrically connected to a reference ground via the one unbiased diode and the Zener diode.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: July 12, 2016
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Josef Forster, Roland Ahlers
  • LIMITER FOR BROADBAND HIGH-FREQUENCY SIGNALS
    Publication number: 20140125545
    Abstract: A limiter for high-frequency signals has an input, whereas the high-frequency signal is supplied to the limiter at its input. The limiter provides several limiting stages which are electrically connected to the input. Each limiting stage is a series circuit with an unbiased diode and a Zener diode which does not serve to bias the diode, so that the high-frequency signal is electrically connected to a reference ground via the one unbiased diode and the Zener diode.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 8, 2014
    Inventors: Josef Forster, Roland Ahlers
  • Directional coupler in coaxial line technology
    Patent number: 7884683
    Abstract: A directional coupler comprising a first connection for the inlet or outlet of a shaft, a first decoupling connection which is used to decouple a coupled shaft, a second connection for the inlet or outlet of the inlet or outlet shaft from the first connection and a second decoupling connection which is used to decouple the coupled shaft. The first connection and the first decoupling connection are connected to the internal conductor and to the external conductor of a coaxial conductor on the first connection surface thereof, by means of a first network. The second connection and the second decoupling connection are connected to the internal conductor and to the external conductor of the coaxial conductor on the second connection surface thereof, by means of a second network.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: February 8, 2011
    Assignee: Rohde & Schwarz GmbH & Co., KG
    Inventor: Roland Ahlers
  • Directional Coupler in Coaxial Line Technology
    Publication number: 20090033436
    Abstract: A directional coupler comprising a first connection for the inlet or outlet of a shaft, a first decoupling connection which is used to decouple a coupled shaft, a second connection for the inlet or outlet of the inlet or outlet shaft from the first connection and a second decoupling connection which is used to decouple the coupled shaft. The first connection and the first decoupling connection are connected to the internal conductor and to the external conductor of a coaxial conductor on the first connection surface thereof, by means of a first network. The second connection and the second decoupling connection are connected to the internal conductor and to the external conductor of the coaxial conductor on the second connection surface thereof, by means of a second network.
    Type: Application
    Filed: October 27, 2004
    Publication date: February 5, 2009
    Inventor: Roland Ahlers