Patents by Inventor Mikko Kaunisto

Mikko Kaunisto 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).

  • Antenna array and unit cell using an artificial magnetic layer
    Patent number: 7471247
    Abstract: An antenna array includes a plurality of antenna unit cells, a ground plane, and at least one artificial magnetic layer AML unit cell. At least one AML unit cell is disposed between at least two adjacent ones of the antenna unit cells. The AML unit cells include a pair of split ring resonators through a ring dielectric layer, and the resonators are capacitively coupled to the a ground plane of the antenna array through a capacitor dielectric layer. The resonators are orthogonal to one another and to the ground plane, and more than one pair may be defined in each AML unit cell. Magnetic energy from the antenna unit cells induces an electric field in the resonators, and the resulting magnetic field is strongly coupled to the AML unit cell to inhibit mutual coupling between radiating elements by suppression of surface wave propagation.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: December 30, 2008
    Assignee: Nokia Siemens Networks, Oy
    Inventors: Jussi Säily, Mikko Kaunisto, Sergei Tretyakov, Constantin Simovski
  • Antenna array and unit cell using an artificial magnetic layer
    Publication number: 20070285316
    Abstract: An antenna array includes a plurality of antenna unit cells, a ground plane, and at least one artificial magnetic layer AML unit cell. At least one AML unit cell is disposed between at least two adjacent ones of the antenna unit cells. The AML unit cells include a pair of split ring resonators through a ring dielectric layer, and the resonators are capacitively coupled to the a ground plane of the antenna array through a capacitor dielectric layer. The resonators are orthogonal to one another and to the ground plane, and more than one pair may be defined in each AML unit cell. Magnetic energy from the antenna unit cells induces an electric field in the resonators, and the resulting magnetic field is strongly coupled to the AML unit cell to inhibit mutual coupling between radiating elements by suppression of surface wave propagation.
    Type: Application
    Filed: June 13, 2006
    Publication date: December 13, 2007
    Inventors: Jussi Saily, Mikko Kaunisto, Sergei Tretyakov, Constantin Simovski