Patents by Inventor David Dening

David Dening 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: 20150279268
    Abstract: In one embodiment, a display panel includes a cellular modem configured to receive an image, a control circuit in communication with the cellular modem, an LED display in communication with the control circuit and configured to display the image through a rear window of a vehicle, a first voltage regulator; and a second voltage regulator. The LED display comprises a first set of LED modules and a second set of LED modules. The first voltage regulator is coupled to the first set of LED modules, and the second voltage regulator is coupled to the second set of LED modules.
    Type: Application
    Filed: March 31, 2014
    Publication date: October 1, 2015
    Applicant: Prophet Signs, Inc.
    Inventors: Sam M. Ganim, Lon Cecil, David Dening
  • Patent number: 8836433
    Abstract: Apparatus and methods for electronic amplification are disclosed herein. In certain implementations, an amplifier is provided for amplifying a RF signal, and the amplifier includes a first transistor and a second transistor electrically connected in a Darlington configuration. The first and second transistors can be, for example, bipolar or field effect transistors and the first transistor can amplify an input signal and provide the amplified input signal to the second transistor. The first and second transistors are electrically connected to a power low node such as a ground node through first and second bias circuits, respectively. In certain implementations, the first transistor includes an inductor disposed in the path from the first transistor to the power low voltage. By including the inductor in the path from the first transistor to the ground node, the third order distortion of the amplifier can be improved.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: September 16, 2014
    Assignee: Skyworks Solutions, Inc.
    Inventors: David Dening, Alan W Ake
  • Publication number: 20120286878
    Abstract: Apparatus and methods for electronic amplification are disclosed herein. In certain implementations, an amplifier is provided for amplifying a RF signal, and the amplifier includes a first transistor and a second transistor electrically connected in a Darlington configuration. The first and second transistors can be, for example, bipolar or field effect transistors and the first transistor can amplify an input signal and provide the amplified input signal to the second transistor. The first and second transistors are electrically connected to a power low node such as a ground node through first and second bias circuits, respectively. In certain implementations, the first transistor includes an inductor disposed in the path from the first transistor to the power low voltage. By including the inductor in the path from the first transistor to the ground node, the third order distortion of the amplifier can be improved.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 15, 2012
    Applicant: SKYWORKS SOLUTIONS, INC.
    Inventors: David Dening, Alan W. Ake
  • Patent number: 7474189
    Abstract: A circuit board having an embedded inductor and a process for making the circuit board is provided. In general, the process begins by providing a core structure including a dielectric core layer and a first metal layer on a top surface of the dielectric core layer. The first metal layer is etched to form first inductor windings. A material, such as an epoxy material, including magnetic filler material is deposited over the first inductor windings. Thereafter, a prepreg layer is placed over and attached to the material deposited over the first inductor windings to form the circuit board having the embedded inductor.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 6, 2009
    Assignee: RF Micro Devices, Inc.
    Inventors: David Dening, Steve Dorn, Milind Shah, Yang Rao, Michael Kay, Jon Jorgenson
  • Patent number: 7330071
    Abstract: A system and method are provided for efficiently amplifying a radio frequency signal. In general, the system includes power amplifier circuitry that efficiently amplifies an input signal under power back-off conditions. In one embodiment, the power amplifier circuitry has an efficiency of at least 30% at a 6 dB back-off point. In addition, DC-DC conversion circuitry operates to control a variable supply voltage provided to the power amplifier circuitry, thereby controlling an output power level, or average output power, of the power amplifier circuitry.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: February 12, 2008
    Assignee: RF Micro Devices, Inc.
    Inventors: David Dening, Kathleen Muhonen
  • Patent number: 7301400
    Abstract: A mobile terminal including a multi-phase DC-DC converter for controlling a supply voltage provided to a power amplifier in the transmit chain. In general, the multi-phase DC-DC converter includes a multi-phase converter control system and a multi-phase power train. The multi-phase converter control system generates a plurality of control signals based on a set-point voltage and a supply voltage at the output of the multi-phase DC-DC converter. The plurality of control signals are provided to the multi-phase control system which generates a plurality of currents each based on a corresponding one of the plurality of control signals. The plurality of currents charge an output capacitor such that an average voltage across the output capacitor is the desired supply voltage.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: November 27, 2007
    Assignee: RF Micro Devices, Inc.
    Inventor: David Dening
  • Patent number: 7167054
    Abstract: Power control circuitry that is configurable as either a Low Dropout (LDO) voltage regulator or a switching DC—DC converter for controlling a variable supply voltage provided to a power amplifier of a mobile terminal is provided. The power control circuitry includes an output stage including first and second output transistors, an analog control system, and a digital control system. When in LDO voltage regulator mode, the analog control system provides an analog control signal to the first transistor based on an adjustable power control signal and a feedback signal indicative of the variable supply voltage, and the digital control system operates to disable the second output transistor. When in DC—DC converter mode, an output stage of the analog control system is disabled, and the digital control system provides binary control signals to the first and second transistors based on the adjustable power control signal and the feedback signal.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: January 23, 2007
    Assignee: RF Micro Devices, Inc.
    Inventors: David Dening, Craig Andrews, Michael R. Kay, Jackie Johnson, Ulrik Riis Madsen
  • Patent number: 7132891
    Abstract: A system is provided for adjusting an output power of a multi-stage power amplifier by controlling a supply voltage provided to one or more output amplifier stages of the power amplifier using a switching DC—DC converter. In general, the system includes a power amplifier including an input amplifier stage and one or more output amplifier stages coupled in series with the input amplifier stage. The one or more output amplifier stages receive a variable supply voltage from switching DC—DC conversion circuitry. The switching DC—DC conversion circuitry provides the variable supply voltage based on an adjustable power control signal. By controlling the variable supply voltage provided to the one or more output stages, the switching DC—DC conversion circuitry controls an output power of the power amplifier based on the adjustable power control signal.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: November 7, 2006
    Assignee: RF Micro Devices, Inc.
    Inventors: David Dening, Ulrik R. Madsen, Victor E. Steel, Jon D. Jorgenson, Michael R. Kay
  • Patent number: 7101721
    Abstract: An adaptive manufacturing process for a Film Bulk Acoustic Resonator (FBAR) tests the FBAR circuit during manufacturing to determine a resonant frequency thereof. Reactive tuning elements may be adjusted as needed depending on the testing to change the resonant frequency to a desired resonant frequency. In an exemplary embodiment, predetermined masks may be applied to modify the tuning elements.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: September 5, 2006
    Assignee: RF Micro Devices, Inc.
    Inventors: Jon D. Jorgenson, David Dening, Victor Steel
  • Patent number: 7053713
    Abstract: A switching multi-phase DC-DC converter is provided that includes a current feedback loop for each phase of the multi-phase converter and a voltage feedback loop providing a set-point to each of the current feedback loops. The combination of the current feedback loops and the voltage feedback loop operates to balance the currents in each of the phases of the multi-phase DC-DC converter such that the currents have substantially the same magnitude.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: May 30, 2006
    Assignee: RF Micro Devices, Inc.
    Inventor: David Dening
  • Patent number: 6996892
    Abstract: A circuit board having an embedded inductor and a process for making the circuit board is provided. In general, the process begins by providing a core structure including a dielectric core layer and a first metal layer on a top surface of the dielectric core layer. The first metal layer is etched to form first inductor windings. A material, such as an epoxy material, including magnetic filler material is deposited over the first inductor windings. Thereafter, a prepreg layer is placed over and attached to the material deposited over the first inductor windings to form the circuit board having the embedded inductor.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: February 14, 2006
    Assignee: RF Micro Devices, Inc.
    Inventors: David Dening, Steve Dorn, Milind Shah, Yang Rao, Michael Kay, Jon Jorgenson
  • Patent number: 6980039
    Abstract: A DC—DC converter includes a variable frequency oscillator, a control system and a power train. The DC—DC converter is well suited for use in a cell phone. The control system uses the output of the oscillator to control the power train. The oscillator varies its frequency as a function of a pseudo random number generator, thereby reducing electromagnetic interference caused by ripple in the output of the DC—DC converter.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: December 27, 2005
    Assignee: RF Micro Devices, Inc.
    Inventors: David Dening, David E. Reed, Baker Scott
  • Patent number: 6970040
    Abstract: The present invention provides a wideband power amplifier for a multi-mode or multi-band wireless communication device. The wideband power amplifier is configured to amplify signals in different frequency bands corresponding to different operating modes. In general, the wideband power amplifier includes multiple matching circuits that operate to combine the signals in the different frequency bands and provide a combined signal to each transistor in an output stage of the wideband power amplifier.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: November 29, 2005
    Assignee: RF Micro Devices, Inc.
    Inventor: David Dening
  • Patent number: 6969978
    Abstract: A DC-DC converter includes a variable frequency oscillator, a control system and a power train. The DC-DC converter is well suited for use in a cell phone. The control system uses the output of the oscillator to control the power train. The oscillator varies its frequency as a function of a pseudo random number generator, thereby reducing electromagnetic interference caused by ripple in the output of the DC-DC converter.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: November 29, 2005
    Assignee: RF Micro Devices, Inc.
    Inventor: David Dening
  • Patent number: 6819941
    Abstract: The present invention eliminates the need for complex impedance networks or parallel amplification stages for multi-mode mobile terminals. A wideband power amplifier is configured to amplify signals in different frequency bands corresponding to different operating modes. The supply voltage of the wideband power amplifier is adjusted in light of the load impedance of radiating circuitry to achieve a desired output power for the respective operating modes.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: November 16, 2004
    Assignee: RF Micro Devices, Inc.
    Inventors: David Dening, Victor E. Steel, Jon D. Jorgenson
  • Publication number: 20040183511
    Abstract: A DC-DC converter includes a variable frequency oscillator, a control system and a power train. The DC-DC converter is well suited for use in a cell phone. The control system uses the output of the oscillator to control the power train. The oscillator varies its frequency as a function of a pseudo random number generator, thereby reducing electromagnetic interference caused by ripple in the output of the DC-DC converter.
    Type: Application
    Filed: March 17, 2003
    Publication date: September 23, 2004
    Applicant: RF MICRO DEVICES, INC.
    Inventor: David Dening
  • Patent number: 6720831
    Abstract: A power amplifier circuit comprises a sensing circuit and a processing circuit adapted to detect voltage peaks in an output of a power amplifier. If the voltage peak is above a predetermined threshold level, the processing circuit acts to reduce bias provided to the power amplifier, thereby reducing the output levels.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: April 13, 2004
    Assignee: RF Micro Devices, Inc.
    Inventors: David Dening, Kathleen Muhonen
  • Publication number: 20040014249
    Abstract: An adaptive manufacturing process for a Film Bulk Acoustic Resonator (FBAR) tests the FBAR circuit during manufacturing to determine a resonant frequency thereof. Reactive tuning elements may be adjusted as needed depending on the testing to change the resonant frequency to a desired resonant frequency. In an exemplary embodiment, predetermined masks may be applied to modify the tuning elements.
    Type: Application
    Filed: July 22, 2002
    Publication date: January 22, 2004
    Inventors: Jon D. Jorgenson, David Dening, Victor Steel
  • Patent number: 6657592
    Abstract: A patch antenna may be integrated into a mobile terminal by associating the patch antenna with a ground plane adapted to remove eddy currents and isolate the antenna from spurious electromagnetic signals. The patch antenna may comprise a kink. Together the patch antenna and ground plane form a surface on which other electrical components may be mounted, such as the transceiver circuitry of the mobile terminal.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: December 2, 2003
    Assignee: RF Micro Devices, Inc.
    Inventors: David Dening, Vic Steel, Leonard Reynolds
  • Publication number: 20030201938
    Abstract: A patch antenna may be integrated into a mobile terminal by associating the patch antenna with a ground plane adapted to remove eddy currents and isolate the antenna from spurious electromagnetic signals. The patch antenna may comprise a kink. Together the patch antenna and ground plane form a surface on which other electrical components may be mounted, such as the transceiver circuitry of the mobile terminal.
    Type: Application
    Filed: April 26, 2002
    Publication date: October 30, 2003
    Inventors: David Dening, Victor Steel, Leonard Reynolds