Patents by Inventor Tomas Rutfors

Tomas Rutfors 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).

  • Patent number: 10910715
    Abstract: The invention concerns an antenna arrangement (1) comprising: —a printed circuit board (2) having a metallised area (3) acting as a ground plane (3) in use, —a recess portion (4) in an edge portion of the ground plane (3), —a first electrically reactive network (9) bridging the recess portion (4)—a second electrically reactive network (16) bridging the recess portion (4), separately from the first electrically reactive network (9), wherein an electrical length of the recess portion (4) is 1/10th of a wavelength of the resonance frequency of the antenna arrangement (1) or less, and wherein a physical distance between the first (9) and second (16) electrically reactive networks (9, 16) is less than 1/12 of a wavelength of the resonance frequency of the antenna arrangement (1). The invention also concerns a device comprising an antenna arrangement (1).
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: February 2, 2021
    Assignee: Proant AB
    Inventor: Tomas Rutfors
  • Publication number: 20190393603
    Abstract: The invention concerns an antenna arrangement (1) comprising: —a printed circuit board (2) having a metallised area (3) acting as a ground plane (3) in use, —a recess portion (4) in an edge portion of the ground plane (3), —a first electrically reactive network (9) bridging the recess portion (4) —a second electrically reactive network (16) bridging the recess portion (4), separately from the first electrically reactive network (9), wherein an electrical length of the recess portion (4) is 1/10th of a wavelength of the resonance frequency of the antenna arrangement (1) or less, and wherein a physical distance between the first (9) and second (16) electrically reactive networks (9, 16) is less than 1/12 of a wavelength of the resonance frequency of the antenna arrangement (1). The invention also concerns a device comprising an antenna arrangement (1).
    Type: Application
    Filed: February 27, 2018
    Publication date: December 26, 2019
    Inventor: Tomas Rutfors
  • Publication number: 20140375527
    Abstract: The present invention provides a solution to how an antenna of the Patch or PIFA type can be made from a sheet metal in order for thereafter to be mounted on a printed circuit board with particularly formed mounting areas in order to provide both an inexpensive but yet robust and efficient antenna solution.
    Type: Application
    Filed: April 10, 2014
    Publication date: December 25, 2014
    Applicant: ProAnt AB
    Inventor: Tomas Rutfors
  • Patent number: 7808433
    Abstract: The present invention comprises an antenna device for a portable radio communication device operable in at least a first and a second frequency band. The antenna device comprises a first electrically conductive radiating element having a feeding portion connectable to a feed device (RF) of the radio communication device for feeding and receiving radio frequency signals, a first ground plane portion arranged at a distance from the first radiating element, a second ground plane portion, and a controllable switch arranged between the first and second ground plane portion for selectively interconnecting or disconnecting the first and second ground plane portion.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: October 5, 2010
    Assignee: Laird Technologies AB
    Inventors: Tomas Rutfors, Axel Von Arbin
  • Publication number: 20100188292
    Abstract: Antenna that offer simple mounting and possibility for modification, where the antenna element of electrical conductive material have a spacer of electrical insulator applied by adhesive and where the spacer also have adhesive intended for mounting on substrate of for example printed circuit board. The antenna offer big possibility to design antennas for different communication bands and different sizes without need for customisation of either carrier or printed circuit board.
    Type: Application
    Filed: September 3, 2007
    Publication date: July 29, 2010
    Inventor: Tomas Rutfors
  • Publication number: 20080246674
    Abstract: The present invention comprises an antenna device for a portable radio communication device operable in at least a first and a second frequency band. The antenna device comprises a first electrically conductive radiating element having a feeding portion connectable to a feed device (RF) of the radio communication device for feeding and receiving radio frequency signals, a first ground plane portion arranged at a distance from the first radiating element, a second ground plane portion, and a controllable switch arranged between the first and second ground plane portion for selectively interconnecting or disconnecting the first and second ground plane portion.
    Type: Application
    Filed: September 2, 2005
    Publication date: October 9, 2008
    Inventors: Tomas Rutfors, Axel Von Arbin
  • Patent number: 6909401
    Abstract: An antenna device for a radio communication device, preferably a portable radio communication device, comprising a first antenna element (20) comprising a first feeding portion (22) connected to a first feeding device (24), a second antenna element (30; 230; 330; 430; 530; 630) comprising second feeding portions (32, 33; 332, 333) connected to a second feeding device (34), wherein said first antenna element (20) has an unbalanced feed, and said second antenna element (30; 230; 330; 430; 530; 630) has an essentially balanced feed.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: June 21, 2005
    Assignee: AMC Centurion AB
    Inventors: Tomas Rutfors, Christian Braun, Henrik Falken, Lennart Håkansson, Liu Donghui, Anders Thornell-Pers
  • Publication number: 20040051669
    Abstract: An antenna arrangement for a portable radio communication device, comprising a first (1) and a second (2) antenna element, and a conductive shield (4) connectable to a ground plane device (3), said first (1) and second (2) antenna elements are located on opposite sides of the shield (4), wherein said first (1) and second (2) antenna elements are of different types.
    Type: Application
    Filed: September 25, 2003
    Publication date: March 18, 2004
    Inventors: Tomas Rutfors, Christian Braun, Henrik Falken, Lennart Hakansson, Liu Donghui
  • Publication number: 20030189519
    Abstract: An antenna device for a radio communication device, preferably a portable radio communication device, comprising a first antenna element (20) comprising a first feeding portion (22) connected to a first feeding device (24), a second antenna element (30; 230; 330; 430; 530; 630) comprising second feeding portions (32, 33; 332, 333) connected to a second feeding device (34), wherein said first antenna element (20) has an unbalanced feed, and said second antenna element (30; 230; 330; 430; 530; 630) has an essentially balanced feed.
    Type: Application
    Filed: February 25, 2003
    Publication date: October 9, 2003
    Inventors: Tomas Rutfors, Christian Braun, Henrik Falken, Lennart Hakansson, Liu Donghui, Anders Thornell-Pers