Patents by Inventor Jerzy Dabrowski

Jerzy Dabrowski 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).

  • High frequency balun provided in a multilayer substrate
    Patent number: 5644272
    Abstract: Baluns according to the present invention use both distributed and discrete elements connected together in a multilayer dielectric structure. As distributed elements, coupled striplines are provided in the multilayer dielectric structure. The discrete components are placed on the surface of the multilayer structure and connected with the distributed elements through via-holes. The operating frequency of the balun can be changed by changing values of the discrete components without changing the multilayer structure itself.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: July 1, 1997
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Jerzy Dabrowski