Patents by Inventor Roberto Tosini

Roberto Tosini 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).

  • Low phase-noise device comprising a microstrip-mounted coaxial dielectric resonator and method of reducing the phase noise in such a device, in particular in a voltage-controlled oscillator
    Patent number: 6114918
    Abstract: A low phase-noise device, like e.g. a microstrip-mounted voltage-controlled oscillator (VCO) is described, and also a method of reducing such a noise in such devices or other devices comprising a microstrip-mounted coaxial ceramic resonator. In practice, a recess is made in the metallic support, opening towards the substrate, extending beneath the terminal area of the ceramic resonator or, possibly, even beyond it. Said recess is filled with air and the layer of electrically conducting material between the substrate and the metallic support at said recess is removed.
    Type: Grant
    Filed: July 6, 1999
    Date of Patent: September 5, 2000
    Assignee: Alcatel
    Inventors: Marco Gris, Roberto Tosini, Graziano Vigano, Alberto Villa
  • PLL frequency synthesizer having a main loop and a secondary loop
    Patent number: 5373256
    Abstract: A frequency synthesis system for generating microwaves which includes a main loop with a low gain electronically tunable voltage controlled oscillator (VCO) covering the entire desired frequency bandwidth, and a secondary loop including a direct synthesis section in which frequencies are synthesized directly from a quartz reference which also controls the stability of the oscillator and an indirect synthesis section with a high gain oscillator.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: December 13, 1994
    Assignee: Mizar S.p.A.
    Inventors: Sebastiano Nicotra, Roberto Tosini