Patents by Inventor Petri Haapanen

Petri Haapanen 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).

  • Simultaneous dual polarization radar system with pedestal mounted receiver
    Patent number: 7495599
    Abstract: The present invention relates to a method and apparatus for simultaneous transmission of horizontal (H) and vertical (V) channels in a dual polarized weather radar. The goal of the invention is accomplished by placing the receiver, duplexer and polarizer equipment above the azimuth rotary joint but below elevation rotary joints. The elevation rotary joints and other associated signal paths are calibrated by using a low power signal on the radar's operating frequency that is fed into couplers above the elevation rotary joints.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: February 24, 2009
    Assignee: Vaisala Oyj
    Inventors: Henry Andersson, Petri Haapanen, Pentti Karhunen, Reino Keränen, Jarkko Korte, Timo Lyly, Olli-Pekka Marstio, Pauli Niska-Pudas, Juha Salmivaara, Elena Saltikoff, Rainer Sanmark, Paavo Toppila
  • Simultaneous Dual Polarization Radar System with Pedestal Mounted Receiver
    Publication number: 20080165052
    Abstract: The present invention relates to a method and apparatus for simultaneous transmission of horizontal (H) and vertical (V) channels in a dual polarized weather radar. The goal of the invention is accomplished by placing the receiver, duplexer and polarizer equipment above the azimuth rotary joint but below elevation rotary joints. The elevation rotary joints and other associated signal paths are calibrated by using a low power signal on the radar's operating frequency that is fed into couplers above the elevation rotary joints.
    Type: Application
    Filed: May 17, 2006
    Publication date: July 10, 2008
    Inventors: Henry Andersson, Petri Haapanen, Pentti Karhunen, Reino Keranen, Jarkko Korte, Timo Lyly, Olli-Pekka Marstio, Pauli Niska-Pudas, Juha Salmivaara, Elena Saltikoff, Rainer Sanmark, Paavo Toppila
  • Method and apparatus for pointing the beam of a wind profiler
    Patent number: 7218279
    Abstract: The present invention relates to a method and apparatus for pointing the beams (63–67) of a wind profiler comprising a stationary antenna matrix (61) with several individual antenna elements (62). According to the method an input signal is fed to the antenna matrix (61), and the phase of the input signal is adjusted for the individual antenna elements (62) in order to point the beam (63–67) of the profiler. In accordance with the invention separate feeder lines for each beam are used for feeding the signals to the antenna elements (62), and the phase differences between the individual antenna elements (62) are controlled with hybrid coupler elements (3, 4).
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: May 15, 2007
    Assignee: Vaisala Oyj
    Inventors: Juha Salmivaara, Petri Haapanen, Pentti Karhunen
  • Method and apparatus for pointing the beam of a wind profiler
    Publication number: 20060077099
    Abstract: The present invention relates to a method and apparatus for pointing the beams (63-67) of a wind profiler comprising a stationary antenna matrix (61) with several individual antenna elements (62). According to the method an input signal is fed to the antenna matrix (61), and the phase of the input signal is adjusted for the individual antenna elements (62) in order to point the beam (63-67) of the profiler. In accordance with the invention separate feeder lines for each beam are used for feeding the signals to the antenna elements (62), and the phase differences between the individual antenna elements (62) are controlled with hybrid coupler elements (3, 4).
    Type: Application
    Filed: December 16, 2003
    Publication date: April 13, 2006
    Inventors: Juha Salmivaara, Petri Haapanen, Pentti Karhunen