Patents by Inventor Thomas Mattsson

Thomas Mattsson 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).

  • Publication number: 20080308564
    Abstract: A flexible packaging container of a transparent packaging laminate contains a colored, liquid food product and displays color print directly applied on a front and/or rear display surface. At least selected parts of the color print are a transparent color print which permits transparency for the food product. One or more color shades in the transparent color print are selected so that the visual impression thereof is enhanced or modified in cooperation with the color of the food product.
    Type: Application
    Filed: June 10, 2005
    Publication date: December 18, 2008
    Inventors: Linda Hall, Sara Ohlgren, Thomas Mattsson, Peter Ohman
  • Patent number: 7432794
    Abstract: A variable integrated inductor is described herein which has an inductance value that can be switched between two or more values. In the preferred embodiment, the variable integrated inductor includes a multi-loop primary inductor which is electromagnetically coupled to a pair of secondary inductors. The secondary inductors are connected to one another to form a closed circuit within which the secondary inductors have a changeable topology that can be switched between a series connection and a parallel connection in order to change an inductance value which is output by the multi-loop primary inductor. In one application, the variable integrated inductor is used in a voltage controlled oscillator (VCO) which is of the type that can be used in a multi-band RF radio transceiver (e.g., wireless communication device).
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: October 7, 2008
    Assignee: Telefonaktiebolaget L M Ericsson (PUBL)
    Inventor: Thomas Mattsson
  • Publication number: 20080056427
    Abstract: A reference frequency generator circuit for a radio frequency transmit and receive apparatus comprises: a first voltage controlled oscillator which is operable to produce a first reference frequency signal, a second voltage controlled oscillator which is operable to produce a second reference frequency signal, a switchable set of dividers, connected to receive the first and second reference frequency signals, and operable to produce a set of output reference frequency signals therefrom, a first subset of the set of output reference frequencies being derived from the first reference frequency, and a second subset of the set of output reference frequencies being derived from the second reference frequency, wherein the first and second reference frequency signals are not equal in frequency to the output reference frequency signals in the set of output reference frequency signals.
    Type: Application
    Filed: November 23, 2004
    Publication date: March 6, 2008
    Inventors: Rob Bristow, Lars Jonsson, Thomas Mattsson
  • Publication number: 20070142019
    Abstract: A method of providing an input signal to a mixer circuit comprises coupling an output signal from a low-noise amplifier circuit to a mixer input of the mixer circuit via an AC coupling circuit, comprising an inductive of capacitive coupling circuit. For capacitive coupling configurations, a coupling capacitor is configured to have a capacitance value determined as a function of a transconductance sensitivity of the mixer circuit. For balanced output configurations of the low-noise amplifier circuit, matched coupling capacitors are used for coupling the balanced output signals to respective inputs of the mixer circuit. In one embodiment, the mixer circuit comprises a quadrature mixer circuit, which may be in a balanced or double-balanced configuration. In another embodiment, the mixer circuit comprises a four-phase mixer circuit, which may be configured as a balanced four-phase mixer circuit coupled to the low-noise amplifier circuit via inductive or capacitive embodiments of the coupling circuit.
    Type: Application
    Filed: October 20, 2006
    Publication date: June 21, 2007
    Inventors: Sven Mattisson, Magnus Nilsson, Andreas Nydahl, Thomas Mattsson
  • Patent number: 7151430
    Abstract: Method and system are disclosed for reducing mutual EM coupling between VCO resonators and for implementing the same on a single semiconductor chip. The method and system involve using inductors that are substantially symmetrical about their horizontal and/or their vertical axes and providing current to the inductors in a way so that the resulting magnetic field components tend to cancel each other by virtue of the symmetry. In addition, two such inductors may be placed near each other and oriented in a way so that the induced current in the second inductor due to the magnetic field originating from first inductor is significantly reduced. The inductors may be 8-shaped, four-leaf clover-shaped, single-turn, multi-turn, rotated relative to one another, and/or vertically offset relative to one another. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: December 19, 2006
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Thomas Mattsson
  • Patent number: 7023293
    Abstract: The present invention relates to a method for tuning a radio filter. The filter comprises an input connection, an output connection and at least two resonator modules coupled in cascade, each having a tuning mechanism and a probe. A first resonator module is connected to the input connection and a final resonator module is connected to the output connection. The filter is adapted to receive at least one signal within a frequency range. The method comprises essentially two steps: coarse tuning, which is dependent on the frequency content of the received signal(s), and fine tuning, which is dependent on a calculated deviation between a set value vector and a measured signal parameter vector. A relationship between the set value vector and the signal parameter vector is established for calculating the deviation. The invention also relates to a radio filter and a system comprising such a radio filter.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: April 4, 2006
    Assignee: Allgon AB
    Inventors: Thomas Mattsson, Anders Jansson
  • Publication number: 20060033602
    Abstract: A variable integrated inductor is described herein which has an inductance value that can be switched between two or more values. In the preferred embodiment, the variable integrated inductor includes a multi-loop primary inductor which is electromagnetically coupled to a pair of secondary inductors. The secondary inductors are connected to one another to form a closed circuit within which the secondary inductors have a changeable topology that can be switched between a series connection and a parallel connection in order to change an inductance value which is output by the multi-loop primary inductor. In one application, the variable integrated inductor is used in a voltage controlled oscillator (VCO) which is of the type that can be used in a multi-band RF radio transceiver (e.g., wireless communication device).
    Type: Application
    Filed: August 29, 2005
    Publication date: February 16, 2006
    Inventor: Thomas Mattsson
  • Patent number: 6987427
    Abstract: The present invention relates to a method for tuning a radio filter. The filter comprises an input connection, an output connection and at least two resonator modules coupled in cascade, each having a running mechanism and a probe. A first resonator module is connected to the input connection and a final resonator module is connected to the output connection. The filter is adapted to receive at least one signal within a frequency range. The method comprises essentially two steps: coarse tuning, which is dependent on the frequency content of the received signal(s), and fine tuning, which is dependent on a calculated deviation between a set value vector and a measured signal parameter vector. A relationship between the set value vector and the signal parameter vector is established for calculating the deviation. The invention also relates to a radio filter and a system comprising such a radio filter.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: January 17, 2006
    Assignee: Allgon AB
    Inventors: Thomas Mattsson, Anders Jansson
  • Publication number: 20050195063
    Abstract: Method and system are disclosed for reducing mutual EM coupling between VCO resonators and for implementing the same on a single semiconductor chip. The method and system involve using inductors that are substantially symmetrical about their horizontal and/or their vertical axes and providing current to the inductors in a way so that the resulting magnetic field components tend to cancel each other by virtue of the symmetry. In addition, two such inductors may be placed near each other and oriented in a way so that the induced current in the second inductor due to the magnetic field originating from first inductor is significantly reduced. The inductors may be 8-shaped, four-leaf clover-shaped, single-turn, multi-turn, rotated relative to one another, and/or vertically offset relative to one another. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: August 16, 2004
    Publication date: September 8, 2005
    Inventor: Thomas Mattsson
  • Publication number: 20050151598
    Abstract: The present invention relates to a method for tuning a radio filter. The filter comprises an input connection, an output connection and at least two resonator modules coupled in cascade, each having a tuning mechanism and a probe. A first resonator module is connected to the input connection and a final resonator module is connected to the output connection. The filter is adapted to receive at least one signal within a frequency range. The method comprises essentially two steps: coarse tuning, which is dependent on the frequency content of the received signal(s), and fine tuning, which is dependent on a calculated deviation between a set value vector and a measured signal parameter vector. A relationship between the set value vector and the signal parameter vector is established for calculating the deviation. The invention also relates to a radio filter and a system comprising such a radio filter.
    Type: Application
    Filed: February 28, 2005
    Publication date: July 14, 2005
    Inventors: Thomas Mattsson, Anders Jansson
  • Publication number: 20040061567
    Abstract: The present invention relates to a method for tuning a radio filter. The filter comprises an input connection, an output connection and at least two resonator modules coupled in cascade, each having a running mechanism and a probe. A first resonator module is connected to the input connection and a final resonator module is connected to the output connection. The filter is adapted to receive at least one signal within a frequency range. The method comprises essentially two steps: coarse tuning, which is dependent on the frequency content of the received signal(s), and fine tuning, which is dependent on a calculated deviation between a set value vector and a measured signal parameter vector. A relationship between the set value vector and the signal parameter vector is established for calculating the deviation. The invention also relates to a radio filter and a system comprising such a radio filter.
    Type: Application
    Filed: October 31, 2003
    Publication date: April 1, 2004
    Inventors: Thomas Mattsson, Anders Jansson