Patents by Inventor Piotr Jedrzejewski

Piotr Jedrzejewski 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).

  • Coaxial resonator with dielectric tip
    Patent number: 10122061
    Abstract: A coaxial resonator is provided. The coaxial resonator has a first side and a second side, the coaxial resonator comprising a dielectric disc having a first surface, a second surface and a hole, wherein the second side of the coaxial resonator is connected to the first surface of the dielectric disc, wherein the coaxial resonator further comprises a conductive element connected to second surface of the dielectric disc. A filter comprising a housing, comprising a lid/cover and a chassis having one or more cavities adapted for receiving a coaxial resonator is also provided.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: November 6, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Anis Letaief, Hamed Jahja, Piotr Jedrzejewski
  • COAXIAL RESONATOR WITH DIELECTRIC TIP
    Publication number: 20170301976
    Abstract: A coaxial resonator is provided. The coaxial resonator has a first side and a second side, the coaxial resonator comprising a dielectric disc having a first surface, a second surface and a hole, wherein the second side of the coaxial resonator is connected to the first surface of the dielectric disc, wherein the coaxial resonator further comprises a conductive element connected to second surface of the dielectric disc. A filter comprising a housing, comprising a lid/cover and a chassis having one or more cavities adapted for receiving a coaxial resonator is also provided.
    Type: Application
    Filed: November 29, 2016
    Publication date: October 19, 2017
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Anis LETAIEF, Hamed JAHJA, Piotr JEDRZEJEWSKI
  • Dielectric resonator having a non-uniform effective dielectric permittivity along an axis of tuner displacement
    Patent number: 7271687
    Abstract: The present invention relates to an improved tuning arrangement to linearise the sensitivity to frequency changes within a certain frequency range in response to tuner displacements relative to a resonator body. The tuning arrangement comprises a tuner and/or resonator having a non-uniform distribution of the effective dielectric permittivity along the axis of tuner displacement. The non-uniform distribution of the effective dielectric permittivity is realised by subdividing the tuner into an arbitrary number of sections, each of which distinguishable at least by their geometrical shape and the value and distribution of the dielectric coefficient ?r.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: September 18, 2007
    Assignee: Telefonktiebolaget LM Ericsson (publ)
    Inventors: Piotr Jedrzejewski, Christer Ahlberg, Uno Henningsson
  • Tuning arrangement
    Publication number: 20060145788
    Abstract: The present invention relates to an improved tuning arrangement to linearise the sensitivity to frequency changes within a certain frequency range in response to tuner displacements relative to a resonator body. The tuning arrangement comprises a tuner and/or resonator having a non-uniform distribution of the effective dielectric permittivity along the axis of tuner displacement. The non-uniform distribution of the effective dielectric permittivity is realised by subdividing the tuner into an arbitrary number of sections, each of which distinguishable at least by their geometrical shape and the value and distribution of the dielectric coefficient ?r.
    Type: Application
    Filed: December 23, 2002
    Publication date: July 6, 2006
    Inventors: Piotr Jedrzejewski, Christer Ahlberg, Uno Henningsson