Patents by Inventor Chenggang Xie

Chenggang Xie 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: 20220205346
    Abstract: A downhole throttling device based on wireless control includes an inlet nozzle, a throttling assembly, an electrical sealing cylinder, a gas guide cylinder, a lower adapter sleeve, an end socket, a female sleeve, and electrical components. The inlet nozzle is connected to the throttling assembly, the throttling assembly is connected to the electrical sealing cylinder and the gas guide cylinder, the electrical sealing cylinder and the gas guide cylinder are both connected to the lower adapter sleeve, the lower adapter sleeve is respectively connected to the end socket and the female sleeve, and the electrical components are arranged in the electrical sealing cylinder. A throttling effect is achieved by detecting the temperature and pressure in a tube by a temperature/pressure sensor in the electrical components and controlling a motor to rotate a movable valve in the throttling assembly by a circuit control assembly, thereby achieving wireless control over downhole throttling.
    Type: Application
    Filed: September 15, 2020
    Publication date: June 30, 2022
    Inventors: Jun Xie, Huiyun Ma, Jian Yang, Chenggang Yu, Yukun Fu, Qiang Yin, Kui Li, Yuan Jiang, Dezheng Yi, Yanyan Liu, Haifeng Zhong, Xiaodong Liu
  • Patent number: 10389395
    Abstract: Active filters that may be utilized in various types of radio devices (e.g., receivers and/or transmitters) are disclosed. In some implementations, high dynamic range mixers implementing a polyphase multipath approach may be utilized in the active filters. Such mixers may satisfy the high dynamic range and image suppression requirements when they are configured for radio frequency applications.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: August 20, 2019
    Assignee: Rockwell Collins, Inc.
    Inventors: Donald F. Hovda, Chenggang Xie, Anders P. Walker
  • Patent number: 9831906
    Abstract: An active electronically scanned array (AESA) includes a plurality of power amplifiers including first power amplifiers and second power amplifiers. The first power amplifiers are biased by a first drain voltage. The second power amplifiers are biased by a second drain voltage. The second drain voltage is different from the first drain voltage.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: November 28, 2017
    Assignee: Rockwell Collins, Inc.
    Inventors: Chenggang Xie, James B. West
  • Patent number: 9831564
    Abstract: Antenna systems and packaging methods that reduce packaging and circuit board complexities are disclosed. The antenna system includes a circuit board. The circuit board defines a first surface and a second surface opposite to the first surface. The antenna system also includes a plurality of integrated antenna elements positioned on the first surface of the circuit board. Each integrated antenna element of the plurality of integrated antenna elements includes an antenna element, a printed circuit board and a radio frequency integrated circuit chip. Each integrated antenna element of the plurality of integrated antenna elements is packaged as a three-dimensional stack package.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: November 28, 2017
    Assignee: Rockwell Collins, Inc.
    Inventor: Chenggang Xie
  • Patent number: 9831833
    Abstract: A power amplifier including a power amplifier stage. The power amplifier stage may be configured to receive a signal, amplify the signal at saturation with substantially zero amplitude-phase (AM-PM) distortion, and output the amplified signal as an output signal. The power amplifier may be a single stage power amplifier or a multi-stage power amplifier.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: November 28, 2017
    Assignee: Rockwell Collins, Inc.
    Inventor: Chenggang Xie
  • Patent number: 9685989
    Abstract: Electronically scanned array antenna radiating elements include a phase comparator. The phase comparator connects the transmission circuitry to the receiving circuitry via a shunt switch to compare the intended phase with the actual phase. The phase of a signal received via the shunt switch is sensitive to the performance of power amplifiers in the transmission circuitry, transmitter/receiver switch, and load impedance. Distributed attenuators between the shunt switch and a phase comparator reduce crosstalk. Phase comparison circuitry is useful for detecting faults in the ESA radiating element.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: June 20, 2017
    Assignee: Rockwell Collins, Inc.
    Inventors: Chenggang Xie, Anders P. Walker
  • Patent number: 9660319
    Abstract: The present disclosure is directed to combiners/splitters that reduce packaging and circuit board complexities. More specifically, an apparatus including a chain of directional couplers is used to distribute radio frequency power. The apparatus may also include a set of gain controllers. Each particular gain controller of the set of gain controllers is associated with a particular directional coupler of the chain of directional couplers, and each particular gain controller is configured to adjust a radio frequency power for the associated particular directional coupler.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: May 23, 2017
    Assignee: Rockwell Collins, Inc.
    Inventor: Chenggang Xie
  • Patent number: 9595623
    Abstract: A present novel and non-trivial semiconductor device, switch device and method performed by the switch device is disclosed. A semiconductor device for conducting current may be comprised of an SI substrate and a plurality of electrodes deposited upon the substrate, where at least one electrode may be comprised of a transparent conductive material (“TCM”). A switching device may be comprised of a plurality of electromagnetic radiation sources and a plurality of the semiconductor devices. The method performed by the switching device may be comprised of receiving a plurality of cycles. During a first cycle, a first semiconductor device may be irradiated, and in response, current may flow through the first semiconductor device and provided to a user circuit. During the second cycle, a second semiconductor device may be irradiated, and in response, current from a user circuit may be received and flow through the first semiconductor device.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: March 14, 2017
    Assignee: Rockwell Collins, Inc.
    Inventor: Chenggang Xie
  • Patent number: 9473080
    Abstract: A switch comprises two photoconductive semiconductors and two corresponding laser diodes driven by opposing voltage sources. The two photoconductive semiconductors are connected in series between a high and low voltage source with a radio frequency output at a center node between the photoconductive semiconductors. Each photoconductive semiconductor may include one ohmic contact and one schottky contact for superior bandwidth and efficiency.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: October 18, 2016
    Assignee: Rockwell Collins, Inc.
    Inventors: David W. Cripe, Scott L. Patten, Chenggang Xie, Don L. Landt
  • Patent number: 9137067
    Abstract: High efficiency transmitters for electronically scanned arrays (also known as electronically steered antennas or ESAs) are disclosed. The transmitters in accordance with the present disclosure utilize outphasing power amplification. In one embodiment, the outphasing transmitter includes a phase shifting device. The phase shifting device is configured for phase shifting an input signal and providing a pair of phase shifted signals for each emitting element of the EAS. The outphasing transmitter also includes an outphasing power amplifier associated with each emitting element. Each outphasing power amplifier is configured for separately amplifying the pair of shifted signals for each emitting element and combining the separately amplified signals for each emitting element for transmission.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: September 15, 2015
    Assignee: Rockwell Collins, Inc.
    Inventors: Chenggang Xie, Theodore J. Hoffmann, Anders P. Walker
  • Patent number: 8817822
    Abstract: A device may include a first antenna and a second antenna. The device may further include a frequency domain multiplexer configured for receiving a first input signal. The frequency domain multiplexer may have a first output port connected to the first antenna and configured for supplying a signal in a low band frequency range of the first input signal to the first antenna, and a second output port connected to the second antenna and configured for supplying a signal in a high band frequency range of the first input signal to the second antenna. The device may also include a third antenna configured for receiving a signal in a mid band frequency range of a second input signal. The low band frequency range may be separated from the high band frequency range.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: August 26, 2014
    Assignee: Rockwell Collins, Inc.
    Inventors: Charles H. Reichert, Chenggang Xie
  • Patent number: 8629673
    Abstract: A system for determining an amount of power supplied from a power amplifier may include a power amplification circuit having a characteristic thermal resistance, a first temperature sensor for sensing a first temperature associated with the power amplification circuit when the power amplification circuit is receiving power from the power source, a second temperature sensor for sensing a second temperature associated with an environment occupied by the power amplification circuit, and a processor coupled with the first temperature sensor and the second temperature sensor for determining an amount of power dissipation utilizing (A) a temperature difference determined utilizing the first temperature and the second temperature and (B) the characteristic thermal resistance of the power amplification circuit.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: January 14, 2014
    Assignee: Rockwell Collins, Inc.
    Inventor: Chenggang Xie
  • Patent number: 8395458
    Abstract: The present invention is a high power direct transmitter with frequency-shift keying (FSK) modulation. The transmitter implements a high power, high efficiency power voltage-controlled oscillator (VCO) which allows for production of a modulated RF signal at the final stage (ex.—right at the antenna), thereby eliminating all driving stage power amplification and frequency translation. The transmitter further provides a low SWAP-C alternative to currently available solutions.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: March 12, 2013
    Assignee: Rockwell Collins, Inc.
    Inventors: Chenggang Xie, Gamal M. Hegazi
  • Patent number: 7508267
    Abstract: A power amplifier comprises a distributed pre-driver, digital signal adjuster, a distributed high power amplifier; and an integrated coupler-detector unit. The distributed pre-driver, the digital signal adjuster, the distributed high power amplifier and the integrated coupler-detector unit are formed at an interface of a Gallium Nitride layer and an Aluminum Gallium Nitride layer of a monolithic microwave integrated circuit device.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: March 24, 2009
    Assignee: Rockwell Collins, Inc.
    Inventors: Mark K. Yu, Chenggang Xie
  • Patent number: 6986649
    Abstract: An exemplary system and method for manufacturing micropump systems having integrated piezoresistive sensors is disclosed as including inter alia: a substrate, an inlet channel, an outlet channel, a pumping cavity, a first valve for permitting fluid flow from the inlet channel to the pumping cavity and restricting backflow of purged fluid from the pumping cavity to the inlet channel; a second valve for permitting fluid flow from the pumping cavity to an outlet channel and restricting backflow of purged fluid from the outlet channel to the pumping cavity; a pump actuator element; a pressure sensing cavity surface capable of at least partial mechanical deformation; a plurality of piezoresistors disposed within the sensing cavity; a plurality of contact pads; a plurality of conductive pathways connecting the piezoresistors and the contact pads; and a substantially monolithic device package, wherein the sensing cavity is substantially contained within the micropump device package.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: January 17, 2006
    Assignee: Motorola, Inc.
    Inventors: Xunhu Dai, Chenggang Xie
  • Patent number: 6942939
    Abstract: A system and method for controlling or otherwise effectively parameterizing the delivery of fuel to a fuel cell device comprises a fuel pump (330), a mixing chamber (310), a fuel concentration sensor (350), a control device (360), a pump driver (370) and a pulse generator (380). Various features and parameters of the present invention may be suitably adapted to optimize the fuel transport function for any particular fuel cell design. The present invention provides inter alia improved control of delivery of methanol to a DMFC fuel solution.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: September 13, 2005
    Assignee: Motorola, Inc.
    Inventor: Chenggang Xie
  • Patent number: 6926989
    Abstract: A fuel delivery system for a fuel cell (400) includes a substrate (404) having a cavity (402) formed therein, an o-ring (408) embedded within the cavity, and a detachable tube (410) inserted though and retained within the o-ring. The tube (408), when inserted through the o-ring (408), forces the o-ring to expand and fill the cavity (402) thereby forming a liquid tight seal for the transfer of liquid (414) to a fuel cell chamber (416).
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: August 9, 2005
    Assignee: Motorola, Inc.
    Inventors: Chenggang Xie, Jay Vishal Paidipati, Joseph W. Bostaph
  • Patent number: 6920680
    Abstract: A method of forming a vacuum microelectronic device including steps of forming at least one electron emitter on a substrate, applying a first electric field to move a portion of the at least one electron emitter in a direction toward the first electric field, and maintaining the at least one electron emitter in the direction after removing the first electric field.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: July 26, 2005
    Assignee: Motorola, Inc.
    Inventors: Yi Wei, Kenneth Andrew Dean, Chenggang Xie
  • Publication number: 20050014055
    Abstract: A system and method for controlling or otherwise effectively managing fuel mixing and/or transport in a fuel cell device comprises inter alia a fuel mixing chamber (100), a pure fuel inlet line (110), a bubbling line (120) and a dilute fuel outlet line (130). Disclosed features and specifications may be variously adapted or optionally modified to control or otherwise optimize the rate and/or uniformity of fuel mixing in any fuel cell system. Exemplary embodiments of the present invention may be readily integrated with other existing fuel cell technologies for the improvement of device package form factors, weights and other manufacturing and/or device performance metrics.
    Type: Application
    Filed: July 16, 2003
    Publication date: January 20, 2005
    Inventors: Chenggang Xie, Joseph Bostaph
  • Patent number: 6833709
    Abstract: Switches (306) are used to connect stacks of fuel cells (302, 304) in series or in parallel depending on the load to keep total cell voltage below a maximum input voltage requirement. The cells (302, 304) are coupled in parallel under low power conditions, and the cells are coupled in series under high power conditions to provide a more efficient system (500).
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: December 21, 2004
    Assignee: Motorola, Inc.
    Inventor: Chenggang Xie