Patents by Inventor Michael Menges

Michael Menges 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: 7693491
    Abstract: Aspects of compensating for transmitter output power may comprise sampling an on-chip transmitter circuit temperature at various time instants and determining a feedback temperature compensation value. At least one digital-to-analog converter may be adjusted by utilizing the feedback temperature compensation value, which may correspond to the sampled temperature. The digital-to-analog converter may be an I-component digital-to-analog converter and/or a Q-component digital-to-analog converter. At least a portion of the on-chip transmitter circuit may be characterized to determine power output dependence of the on-chip transmitter circuit on temperature variation of the on-chip transmitter circuit. Based on this characterization, a feedback temperature compensation value that may correspond to the sampled temperature may be used to adjust the digital-to-analog converter. The feedback temperature compensation value may be, for example, from a lookup table or an algorithm.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: April 6, 2010
    Assignee: Broadcom Corporation
    Inventor: Michael Meng-An Pan
  • Patent number: 7672397
    Abstract: A method for producing a transmission signal, wherein an input signal (Vd(t)), which is to be amplified, is fed to a power amplifier (PA) which outputs the signal in an amplified form (va(t)). A reproduction thereof is made and allocates a specific pre-distortion input signal (vd(t)) value to a specific input signal (vd(t)) value. A corresponding pre-distortion value is then determined for the input signal (vd(t)) and the corresponding pre-distortion value is applied to the input signal (vd(t)) in order to feed the pre-distorted input signal to the power amplifier (PA). Subsequently, the crest factor (CF) is calculated from the output signal (vd(t)) of the power (PA) and the reproduction or the value thereof if the determined crest factor departs from a predetermined range of values.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: March 2, 2010
    Inventors: Otmar Irscheid, Andreas Langer, Michael Menge
  • Patent number: 7315208
    Abstract: A method for improving the output power of a non-linear amplifier, wherein signal amplitudes of a digital baseband are predistorted and then fed at the input of the power amplifier, having a non-linear characteristic curve, in order to linearize the characteristic curve. The signal amplitudes are fed to the input of the power amplifier in a predistorted manner up to a predetermined transition power while being fed to the input of the power amplifier in a non-predistorted manner from the predetermined transition power on.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: January 1, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Otmar Irscheid, Andreas Langer, Michael Menge
  • Patent number: 7197421
    Abstract: In an RF communication system, aspects of a method for a temperature sensor for transmitter output power compensation may comprise generating an output voltage, which may vary with temperature, from at least one reference voltage, wherein at least one reference voltage may vary proportionally with temperature. The output voltage may be converted to a digital value. The reference voltage may be generated by utilizing a current source to generate a voltage across a resistive load. A control voltage generated from an operational amplifier may control at least one current source. PN junction characteristics of at least one bipolar junction transistor may be utilized to generate an input reference voltage for the operational amplifier. Resistance of at least one resistor, which may be coupled to the bipolar junction transistor and to the operational amplifier, may be adjusted to determine a current level from the current source at a plurality of different temperatures.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: March 27, 2007
    Assignee: Broadcom Corporation
    Inventor: Michael (Meng-An) Pan
  • Patent number: 7119620
    Abstract: In an RF communication system, aspects of constant or proportional to absolute temperature biasing for minimizing transmitter output power variation may comprise configuring at least one current source to provide a temperature dependent current, where the current may be constant with temperature or vary proportionally to absolute temperature. A control voltage that may be generated by an operational amplifier may be fed back to control the current source. An input reference voltage may also be generated for the operational amplifier by utilizing PN junction characteristics of at least one bipolar junction transistor. Resistance may be adjusted to allow operation of the current source at a plurality of different supply voltages, including the different supply voltages that may be less than 1.2 volts, for example. Additionally, adjusting the resistance may also allow the current to be constant with temperature or vary with temperature.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: October 10, 2006
    Assignee: Broadcom Corporation
    Inventor: Michael (Meng-An) Pan
  • Publication number: 20060145759
    Abstract: A method for improving the output power of a non-linear amplifier, wherein signal amplitudes of a digital baseband are predistorted and then fed at the input of the power amplifier, having a non-linear characteristic curve, in order to linearize the characteristic curve. The signal amplitudes are fed to the input of the power amplifier in a predistorted manner up to a predetermined transition power while being fed to the input of the power amplifier in a non-predistorted manner from the predetermined transition power on.
    Type: Application
    Filed: August 28, 2003
    Publication date: July 6, 2006
    Inventors: Otmar Irscheid, Andreas Langer, Michael Menge
  • Publication number: 20060116845
    Abstract: In an RF communication system, aspects of a method for a temperature sensor for transmitter output power compensation may comprise generating an output voltage, which may vary with temperature, from at least one reference voltage, wherein at least one reference voltage may vary proportionally with temperature. The output voltage may be converted to a digital value. The reference voltage may be generated by utilizing a current source to generate a voltage across a resistive load. A control voltage generated from an operational amplifier may control at least one current source. PN junction characteristics of at least one bipolar junction transistor may be utilized to generate an input reference voltage for the operational amplifier. Resistance of at least one resistor, which may be coupled to the bipolar junction transistor and to the operational amplifier, may be adjusted to determine a current level from the current source at a plurality of different temperatures.
    Type: Application
    Filed: November 30, 2004
    Publication date: June 1, 2006
    Inventor: Michael (Meng-An) Pan
  • Publication number: 20050152472
    Abstract: A method for producing a transmission signal, wherein an input signal (Vd(t)), which is to be amplified, is fed to a power amplifier (PA) which outputs the signal in an amplified form (va(t)). A reproduction thereof is made and allocates a specific pre-distortion input signal (vd(t)) value to a specific input signal (vd(t)) value. A corresponding pre-distortion value is then determined for the input signal (vd(t)) and the corresponding pre-distortion value is applied to the input signal (vd(t)) in order to feed the pre-distorted input signal to the power amplifier (PA). Subsequently, the crest factor (CF) is calculated from the output signal (vd(t)) of the power (PA) and the reproduction or the value thereof if the determined crest factor departs from a predetermined range of values.
    Type: Application
    Filed: May 14, 2003
    Publication date: July 14, 2005
    Inventors: Otmar Irscheid, Andreas Langer, Michael Menge