Patents by Inventor Roger Perrott

Roger Perrott 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).

  • User terminal antenna arrangement for multiple-input multiple-output communications
    Patent number: 7106252
    Abstract: Multiple input multiple output (MIMO) systems are able to provide wireless communications at increased data rates. These systems involve using a plurality of antennas on both the transmitter and receiver and the problem of how to accommodate such structures in user terminals, which are often required to be hand held then arises. An antenna arrangement which is suitable for MIMO communications and which can be incorporated into a user terminal such as a personal digital assistant (PDA) is described. A pair of co-polarised umbrella monopoles and a slot antenna are incorporated into a flap which extends at approximately 90° to the body of the PDA. A fourth monopole is mounted and protrudes from the PDA itself.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: September 12, 2006
    Assignee: Nortel Networks Limited
    Inventors: Martin Smith, Dawn Power, Sonya Amos, Roger Perrott
  • User terminal antenna arrangement for multiple-input multiple-output communications
    Publication number: 20050104777
    Abstract: Multiple input multiple output (MIMO) systems are able to provide wireless communications at increased data rates. These systems involve using a plurality of antennas on both the transmitter and receiver and the problem of how to accommodate such structures in user terminals, which are often required to be hand held then arises. An antenna arrangement which is suitable for MIMO communications and which can be incorporated into a user terminal such as a personal digital assistant (PDA) is described. A pair of co-polarised umbrella monopoles and a slot antenna are incorporated into a flap which extends at approximately 90° to the body of the PDA. A fourth monopole is mounted and protrudes from the PDA itself.
    Type: Application
    Filed: February 24, 2003
    Publication date: May 19, 2005
    Inventors: Martin Smith, Dawn Power, Sonya Amos, Roger Perrott