Patents by Inventor Jan Dahlin

Jan Dahlin 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).

  • Mixer circuit and RF transmitter using such mixer circuit
    Patent number: 8260218
    Abstract: Described herein are techniques for providing a mixer circuit having a mixer core. The mixer circuit includes a variable current block that is arranged to feed the mixer core with an amplified input signal.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: September 4, 2012
    Assignee: Intel Mobile Communications GmbH
    Inventors: Stefan van Waasen, Anna-Maria Lann, Paul Stephansson, Fredrik Pusa, Jan Dahlin
  • Mixer Circuit and RF Transmitter Using Such Mixer Circuit
    Publication number: 20080254754
    Abstract: Described herein are techniques for providing a mixer circuit having a mixer core. The mixer circuit includes a variable current block that is arranged to feed the mixer core with an amplified input signal.
    Type: Application
    Filed: June 20, 2008
    Publication date: October 16, 2008
    Applicant: Infineon Technologies AG
    Inventors: Stefan Van Waasen, Anna-Maria Lann, Paul Stephansson, Fredrik Pusa, Jan Dahlin
  • Voltage to current converter and method for converting
    Patent number: 7230490
    Abstract: A voltage to current converter comprises a signal stage (1) with a first transistor (11) and a first resistor (12). The first transistor (11) is adapted to be fed with an input signal voltage (Vin). The converter is adapted to generate an output current, comprising an output DC bias current (IB1) and an output signal current (iout), and to provide a gain adjustment through the variation of the first resistor (12). The converter further comprises a bias stage (2), adapted to generate and feed the signal stage (1) with an input DC bias voltage (VDC), which input DC bias voltage (VDC) is adapted to keep the output DC bias current (IB1) constant during the variation of the first resistor (12).
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: June 12, 2007
    Assignee: Infineon Technologies AG
    Inventor: Jan Dahlin
  • Arrangement for low power clock generation
    Patent number: 6943639
    Abstract: A high accuracy crystal oscillator for generating a clock signal comprises a gain stage (2) controlled by a current from a current source (5), and a trimmable load capacitance (3, 4). To generate a low power clock signal, a mode control unit (7) is provided for disconnecting at least part of the load capacitance (3, 4) and activating an oscillation amplitude regulator (6) that is connected between the input terminal of the gain stage (2) and the current source (5) to reduce the current to the gain stage (2) to such a value that oscillation is maintained with a minimum amplitude.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: September 13, 2005
    Assignee: Infineon Technologies AG
    Inventor: Jan Dahlin
  • Voltage to current converter and method for converting
    Publication number: 20050099211
    Abstract: A voltage to current converter comprises a signal stage (1) with a first transistor (11) and a first resistor (12). The first transistor (11) is adapted to be fed with an input signal voltage (Vin). The converter is adapted to generate an output current, comprising an output DC bias current (IB1) and an output signal current (iout), and to provide a gain adjustment through the variation of the first resistor (12). The converter further comprises a bias stage (2), adapted to generate and feed the signal stage (1) with an input DC bias voltage (VDC), which input DC bias voltage (VDC) is adapted to keep the output DC bias current (IB1) constant during the variation of the first resistor (12).
    Type: Application
    Filed: November 9, 2004
    Publication date: May 12, 2005
    Inventor: Jan Dahlin
  • Arrangement for low power clock generation
    Publication number: 20050083141
    Abstract: A high accuracy crystal oscillator for generating a clock signal comprises a gain stage (2) controlled by a current from a current source (5), and a trimmable load capacitance (3, 4). To generate a low power clock signal, a mode control unit (7) is provided for disconnecting at least part of the load capacitance (3, 4) and activating an oscillation amplitude regulator (6) that is connected between the input terminal of the gain stage (2) and the current source (5) to reduce the current to the gain stage (2) to such a value that oscillation is maintained with a minimum amplitude.
    Type: Application
    Filed: December 3, 2004
    Publication date: April 21, 2005
    Inventor: Jan Dahlin