Patents by Inventor Martin Nils Johansson
Martin Nils Johansson 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).
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Patent number: 8717251Abstract: The invention provides an antenna arrangement for a wireless communication system arranged to have at least one transmit mode and at least one receive mode, the arrangement comprising at least three directional antennas in an antenna configuration. Each directional antenna is arranged to have an azimuthal radiation pattern shaped as a beam, each beam covering an angular sector, such that a combined radiation pattern of all beams in a first transmit mode is arranged to provide a full 360° omnidirectional coverage. By combining localization and polarization of the directional antennas an omnidirectional radiation pattern substantially without null-depths in the azimuthal plane can be created when the radiation pattern of the directional antennas are combined.Type: GrantFiled: April 23, 2013Date of Patent: May 6, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Martin Nils Johansson, Stefan Johansson, Sven Petersson
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Patent number: 8666451Abstract: A wireless communication system comprising at least one base station in a communication cell, wherein the base station is equipped with at least one array antenna comprising at least two antenna ports which are connected to respective at least two corresponding antenna elements, wherein at least two of the at least two antenna elements have essentially the same polarization. The array antenna is arranged for communication via at least two antenna radiation lobes, each antenna radiation lobe communicating an information stream to at least one user equipment (UE) in the cell, wherein each antenna radiation lobe is individually controllable both in azimuth and elevation, whereby the communication of the information streams is optimized.Type: GrantFiled: November 22, 2011Date of Patent: March 4, 2014Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Anna Barbro Ulrika Engström, Bo Göransson, Martin Nils Johansson, Mats H Andersson, Sven Oscar Petersson, Sven Anders Gösta Derneryd
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Patent number: 8594158Abstract: A base station repeater station pair, comprising: a base station (1) having an input for a broadcast signal (s(t)) and being arranged to transmit, in use, a transfer signal over a link (3) using electromagnetic (EM) radiation; and a repeater station (2) arranged to receive, in use and through EM radiation, the transfer signal from the base station (1) and from the transfer signal broadcast the broadcast signal using EM radiation, in which the link (3) between the base station (1) and the repeater station (2) over which the transfer signal is passed in use comprises a dual polarized link, whereby the base station (1) is arranged to transmit the transfer signal over the link (3) with two different polarizations, and the repeater station (2) is arranged to receive the transfer signal from the link as two differently polarized versions. Also disclosed area base station and a method of using the above.Type: GrantFiled: July 16, 2008Date of Patent: November 26, 2013Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Mikael Coldrey, Martin Nils Johansson, Sven Oscar Petersson
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Publication number: 20130307752Abstract: The invention provides an antenna arrangement for a wireless communication system arranged to have at least one transmit mode and at least one receive mode, the arrangement comprising at least three directional antennas in an antenna configuration. Each directional antenna is arranged to have an azimuthal radiation pattern shaped as a beam, each beam covering an angular sector, such that a combined radiation pattern of all beams in a first transmit mode is arranged to provide a full 360° omnidirectional coverage. By combining localization and polarization of the directional antennas an omnidirectional radiation pattern substantially without null-depths in the azimuthal plane can be created when the radiation pattern of the directional antennas are combined.Type: ApplicationFiled: April 23, 2013Publication date: November 21, 2013Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Martin Nils JOHANSSON, Stefan Johansson, Sven Petersson
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Patent number: 8432329Abstract: The invention provides an antenna arrangement for a wireless communication system arranged to have at least one transmit mode and at least one receive mode, the arrangement comprising at least three directional antennas (601, 602, 603) in an antenna configuration. Each directional antenna is arranged to have an azimuthal radiation pattern shaped as a beam, each beam covering an angular sector, such that a combined radiation pattern of all beams in a first transmit mode is arranged to provide a full 360° omnidirectional coverage. By combining localization and polarization (P1, P2) of the directional antennas an omnidirectional radiation pattern substantially without null-depths in the azimuthal plane can be created when the radiation pattern of the directional antennas are combined. The invention also provides a corresponding method and a base station for communication with mobile terminals in a telecommunications network equipped with the antenna arrangement.Type: GrantFiled: June 19, 2008Date of Patent: April 30, 2013Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Martin Nils Johansson, Stefan Johansson, Sven Petersson
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Patent number: 8320357Abstract: A wireless telecommunications system for stationary or semi-stationary equipment includes a main node and a first plurality of terminals belonging to the same access subset and arranged to receive from and transmit to the main node. The main node transmits in at least one beam and receives in at least two beams, and the system indicates to the terminals that they may or may not transmit to the central node. Based upon certain criteria, two or more terminals located in different receive beams of the main node may be given permission to transmit to the central node simultaneously. Suitably, two or more terminals which are given permission to transmit simultaneously do so using the same frequency, or the same code, or the same time slot.Type: GrantFiled: July 1, 2005Date of Patent: November 27, 2012Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Anna Barbro Ulrika Engström, Björn Gunnar Johannisson, Martin Nils Johansson, Dag Jungenfelt
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Patent number: 8224271Abstract: An electronic device (200,300) comprising an antenna arrangement with first and second antenna groups with first (122, 142) and a second (124, 144) radiation elements. The first and second radiation elements in each group have first and second respective polarizations and gain, and said groups also comprise a beam forming network (126, 146) connected to the radiation elements of the group and to an output selector (150). The beam forming network (126, 146) of each antenna group uses the radiation elements (122, 124; 142, 144) in the group to create a radiation pattern (127, 147) with a polarization which is a composite of the first and second polarizations of the elements in the group, so that a first (127) and a second (147) radiation pattern of composite polarization is created. The output selector (150) selects or combines signals received by the two antenna groups as its output.Type: GrantFiled: December 21, 2007Date of Patent: July 17, 2012Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Patrik Persson, Martin Nils Johansson, Anders Stjernman, Sven Anders Gösta Derneryd, Jonas Fridén
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Publication number: 20120063525Abstract: A wireless communication system comprising at least one base station in a communication cell, wherein the base station is equipped with at least one array antenna comprising at least two antenna ports which are connected to respective at least two corresponding antenna elements, wherein at least two of the at least two antenna elements have essentially the same polarization. The array antenna is arranged for communication via at least two antenna radiation lobes, each antenna radiation lobe communicating an information stream to at least one user equipment (UE) in the cell, wherein each antenna radiation lobe is individually controllable both in azimuth and elevation, whereby the communication of the information streams is optimized.Type: ApplicationFiled: November 22, 2011Publication date: March 15, 2012Inventors: Anna Barbro Ulrika Engström, Bo Göransson, Martin Nils Johansson, Mats H. Andersson, Sven Oscar Petersson, Sven Anders Gösta Derneryd
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Publication number: 20110142104Abstract: A base station repeater station pair, comprising: a base station (1) having an input for a broadcast signal (s(t)) and being arranged to transmit, in use, a transfer signal over a link (3) using electromagnetic (EM) radiation; and a repeater station (2) arranged to receive, in use and through EM radiation, the transfer signal from the base station (1) and from the transfer signal broadcast the broadcast signal using EM radiation, in which the link (3) between the base station (1) and the repeater station (2) over which the transfer signal is passed in use comprises a dual polarised link, whereby the base station (1) is arranged to transmit the transfer signal over the link (3) with two different polarisations, and the repeater station (2) is arranged to receive the transfer signal from the link as two differently polarised versions. Also disclosed area base station and a method of using the above.Type: ApplicationFiled: July 16, 2008Publication date: June 16, 2011Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Mikael Coldrey, Martin Nils Johansson, Sven Oscar Petersson
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Publication number: 20100271273Abstract: A movable part for an electronic device which comprises at least two parts that can be moved in relation to each other. The movable part comprises a display for the electronic device and a first conducting plane which is comprised in the display or located adjacent to the display. The first conducting plane comprises a waveguide. The waveguide may be a co-planar waveguide, i.e. a waveguide which comprises a central strip of conducting material surrounded by slots on both sides.Type: ApplicationFiled: December 20, 2007Publication date: October 28, 2010Inventors: Anders Stjernman, Martin Nils Johansson, Patrik Persson, Jonas Frídén, Sven Anders Gösta Demeryd
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Publication number: 20100053024Abstract: An antenna device for a telecommunications system, comprising a first antenna with a first radiation pattern and a second antenna with a second radiation pattern. The radiation patterns give the two antennas different coverage in the vertical plane of the antenna device, and the first and the second antennas are used for diversity purposes. The difference in vertical coverage between the first and the second antenna is such that at least the first null points in the vertical plane of the two radiation patterns do not coincide with each other.Type: ApplicationFiled: November 14, 2006Publication date: March 4, 2010Inventors: Mats H. Andersson, Lars Manholm, Martin Nils Johansson, Stefan Johansson
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Publication number: 20090289864Abstract: The present invention relates to an antenna arrangement (100) comprising an antenna section, said antenna section comprising a number of radiating elements which may be arranged in arrays or sub-arrays. It further comprises at least one further antenna section, said at least two antenna sections (101,102,103) being mounted substantially along a straight line, a non-straight line or irregularly at a mounting structure (40). It comprises a feeding network arrangement (20) for feeding said at least two antenna sections (101,102,103), with feeding network control means for controlling the feeding of the antenna sections (101r 102, 103) allowing for beam forming control.Type: ApplicationFiled: December 13, 2004Publication date: November 26, 2009Inventors: Anders Derneryd, Sven Oscar Petersson, Stefan Johansson, Martin Nils Johansson
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Publication number: 20090156235Abstract: The invention discloses a wireless telecommunications device intended to communicate with an access point, such as a base station, in a wireless telecommunications system. The device comprises at least a first radio chain and at least a first and a second antenna, which antennas each have a certain radiation pattern, and which are used for receiving and transmitting information to and from the base station. The device includes a motion sensor for giving information on the spatial orientation of the device, and the device additionally includes means for utilizing said orientation information in order to control the total radiation pattern in the device's communication with the base station by controlling the phase and/or amplitude of signals associated with said first and second antennas.Type: ApplicationFiled: February 10, 2006Publication date: June 18, 2009Inventors: Martin Nils Johansson, Jonas Medbo, Henrik Asplund, Björn Gunnar Johannisson, Jan-Erik Berg, Sven Oscar Petersson
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Publication number: 20090010356Abstract: The present invention relates to a wireless communication system, comprising at least one base station in a communication cell. The base station is equipped with at least one array antenna comprising at least two antenna ports which are coupled to respective at least two corresponding antenna Q elements, where at leas two of the at least two antenna elements have essentially the same polarization. The array antenna is arranged for communication via at least two antenna radiation lobes, each antenna radiation lobe communicating an information stream to at least one UE (user equipment) in the cell. According to a certain aspect of the present invention, in a first mode 0 operation, the array antenna is arranged for communication via one antenna radiation lobe. The present invention also relates to a method for performing said communication.Type: ApplicationFiled: January 4, 2006Publication date: January 8, 2009Inventors: Anna Barbro Engstrom, Bo Goransson, Martin Nils Johansson, Mats H. Andersson, Sven Oscar Petersson, Sven Anders Derneryd
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Publication number: 20080198834Abstract: The invention discloses a wireless telecommunications system for stationary or semi-stationary equipment, Q and comprises a main node (C) and a first plurality (SI-S3) of terminals belonging to the same access subset and arranged to receive Q from and transmit to the main node (C). The main node transmits in at least one beam and receives in at least two beams, and the system comprises means (C) for indicating to terminals that they mayor may not transmit to the central node (C). Based upon certain criteria, two or more terminals (Si-SN) located in different receive beams of the main node (C) may be given permission to transmit to the central node simultaneously. Suitably, two or more terminals which are given permission to transmit simultaneously do so using the same frequency, or the same code or the same time slot.Type: ApplicationFiled: July 1, 2005Publication date: August 21, 2008Inventors: Anna Barbro Ulrika Engstrom, Bjorn Gunnar Johannisson, Martin Nils Johansson, Dag Jungenfelt
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Publication number: 20080129625Abstract: The invention discloses an antenna (100, 100?, 400, 500) comprising walls in a conducting material: first (110, 410, 510) and second (120, 420, 520) main walls, a first end wall (130, 530) and a first and a second side wall. The first (110, 510) and second (120, 520) main walls extend in parallel to each other, and are joined by the first end wall (130, 530). The side walls also join the first and second main walls, so that a cavity with only one opening (105, 205, 505) is formed, a rectangular aperture which can be brought to radiate by a feed connection (207). Suitably, the antenna can also comprise a second end wall (140, 540) which extends from the second main wall (120) towards the first main wall (110), with the length of extension of the first main wall being such that the second end wall and the first main wall do not meet.Type: ApplicationFiled: July 13, 2004Publication date: June 5, 2008Inventors: Bengt Inge Svensson, Anders Hook, Martin Nils Johansson, Joakim Johansson
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Patent number: 7372829Abstract: The present invention relates to cell plans and cell plan changes in point to multipoint systems (PMP). A cell plan arrangement is provided comprising cells having four 90° sectors to which individual sector at least one of four orthogonal channels, such as channels distinguished by two frequencies and two polarisations, are allocated. A method is furthermore provided allowing gradual sector-by-sector migration into a 45° sector cell plan. The cell plan offers advantageous carrier to interference ration (C/I) improvements.Type: GrantFiled: January 13, 2003Date of Patent: May 13, 2008Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Anna Barbro Ulrika Engstrom, Martin Nils Johansson