Patents by Inventor Ki Seok Yang

Ki Seok Yang 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: 20220217842
    Abstract: A printed circuit board includes a first insulating layer, a metal layer disposed on one surface of the first insulating layer, a first circuit layer disposed inside the first insulating layer and having one surface exposed to the one surface of the first insulating layer so as to be in contact with one surface of the metal layer, a second circuit layer in contact with the other surface of the metal layer, and a second insulating layer disposed on the one surface of the first insulating layer to cover the metal layer and the second circuit layer. The first and second circuit layers respectively include a metal different from the metal layer.
    Type: Application
    Filed: October 14, 2021
    Publication date: July 7, 2022
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chan Jin Park, Young Ook Cho, Hyun Seok Yang, Ki Joo Sim, Won Seok Lee, Mi Jeong Jeon
  • Patent number: 8378749
    Abstract: Systems and methods may include an amplifier having at least a first input port, where the amplifier includes a first capacitance associated with the first input port; a first bias circuit, where the first bias circuit comprises a series connection of a first charging circuit and a first discharging circuit, wherein a first node between the first charging circuit and the first discharging circuit is connected to the first input port, wherein responsive to an RF input signal having at least a first predetermined level being received at the first input port, the first charging circuit charges the first capacitance associated with the first input port during a first portion of a cycle of the RF input signal, and discharges the first capacitance associated with the first input port during a second portion of the cycle, thereby controlling a DC bias voltage level available at the first input port.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: February 19, 2013
    Assignee: Samsung Electro-Mechanics
    Inventors: Woonyun Kim, Jeonghu Han, Ki Seok Yang, Jae Joon Chang, Chang-Ho Lee
  • Publication number: 20130027135
    Abstract: Systems and methods may include an amplifier having at least a first input port, where the amplifier includes a first capacitance associated with the first input port; a first bias circuit, where the first bias circuit comprises a series connection of a first charging circuit and a first discharging circuit, wherein a first node between the first charging circuit and the first discharging circuit is connected to the first input port, wherein responsive to an RF input signal having at least a first predetermined level being received at the first input port, the first charging circuit charges the first capacitance associated with the first input port during a first portion of a cycle of the RF input signal, and discharges the first capacitance associated with the first input port during a second portion of the cycle, thereby controlling a DC bias voltage level available at the first input port.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Applicant: SAMSUNG ELECTRO-MECHANICS COMPANY
    Inventors: Woonyun Kim, Jeonghu Han, Ki Seok Yang, Jae Joon Chang, Chang-Ho Lee
  • Publication number: 20120194150
    Abstract: Systems and methods may include a low-dropout (LDO) voltage regulator for portable communication devices. The systems and methods may include a comparator having first and second inputs and generating a control voltage, the first input receiving a battery voltage from a battery source, the second input receiving a fixed voltage independent from the battery voltage, and a power management circuit that receives the control voltage and provides a regulated voltage based upon the control voltage, wherein when the received battery voltage is above the fixed voltage, the control voltage is provided at a high constant voltage, thereby resulting in the regulated voltage being at a first voltage, and wherein when the battery voltage is below the fixed voltage, the control voltage is provided at a low constant voltage, thereby resulting in the regulated voltage being at a second voltage less than the first voltage.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 2, 2012
    Applicant: SAMSUNG ELECTRO-MECHANICS COMPANY
    Inventors: Jaejoon Chang, Ki Seok Yang, Jeonghu Han, Woonyun Kim, Chang-Ho Lee
  • Patent number: 8044759
    Abstract: Systems and methods are provided for overlapping compact multiple transformers.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: October 25, 2011
    Assignees: Samsung Electro-Mechanics, Georgia Tech Research Corporation
    Inventors: Ki Seok Yang, Jeonghu Han, Jaejoon Chang, Woonyun Kim, Chang-Ho Lee
  • Patent number: 7936215
    Abstract: Embodiments of the invention may provide for power amplifier systems and methods. The systems and methods may include a power amplifier that generates a first differential output signal and a second differential output signal, a primary winding comprised of a plurality of primary segments, where a first end of each primary segment is connected to a first common input port and a second end of each primary segment is connected to a second common input port, where the first common input port is operative to receive the first differential output signal, and where the second common input port is operative to receive the second differential output signal, and a single secondary winding inductively coupled to the plurality of primary segments.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: May 3, 2011
    Assignees: Samsung-Electro Mechanics, Georgia Tech Research Corporation
    Inventors: Chang-Ho Lee, Ockgoo Lee, Jeonghu Han, Kyu Hwan An, Hyungwook Kim, Dong Ho Lee, Ki Seok Yang, Haksun Kim, Joy Laskar
  • Publication number: 20110043316
    Abstract: Systems and methods are provided for overlapping compact multiple transformers.
    Type: Application
    Filed: October 12, 2010
    Publication date: February 24, 2011
    Inventors: Ki Seok Yang, Jeonghu Han, Jaejoon Chang, Woonyun Kim, Chang-Ho Lee
  • Patent number: 7880547
    Abstract: Systems and methods may be provided for a power amplifier system. The systems and methods may include a plurality of power amplifiers, where each power amplifier includes at least one output port. The systems and methods may also include a plurality of primary windings each having a first number of turns, where each primary winding is connected to at least one output port of the plurality of power amplifiers, and a single secondary winding inductively coupled to the plurality of primary windings, where the secondary winding includes a second number of turns greater than the first number of turns.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: February 1, 2011
    Assignees: Samsung Electro-Mechanics, Georgia Tech Research Corporation
    Inventors: Chang-Ho Lee, Kyu Hwan An, Ki Seok Yang, Jaejoon Chang, Wangmyong Woo, Younsuk Kim, Haksun Kim, Ockgoo Lee, Dong Ho Lee, Hyungwook Kim, Joy Laskar
  • Patent number: 7812701
    Abstract: Example embodiments of the invention may provide systems and methods for multiple transformers. The systems and methods may include a first transformer that may include a first primary winding and a first secondary winding, where the first primary winding may be inductively coupled to the first secondary winding, where the first transformer may be associated with a first rotational current flow direction in the first primary winding.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: October 12, 2010
    Assignees: Samsung Electro-Mechanics, Georgia Tech Research Corporation
    Inventors: Dong Ho Lee, Ki Seok Yang, Chang-Ho Lee, Haksun Kim, Joy Laskar
  • Patent number: 7768353
    Abstract: Embodiments of the invention may provide for enhancement systems and methods for a power amplifier output control system. In an example embodiment, driver amplifier control may be provided in conjunction with power amplifier control to improve the power efficiency and/or dynamic range of the transmitter system. Furthermore, control over the driver amplifier may allow for relaxed power control slope, which may lessens the burden of digital to analog converters (DACs) in transmitter systems such as cellular transmitter systems. Also, systems and methods in accordance with example embodiments of the invention may provide a less sensitive solution to operational environment variations such as temperature, battery power voltage and implementation IC process.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: August 3, 2010
    Assignee: Samsung Electro-Mechanics Company, Ltd.
    Inventors: Jaejoon Chang, Ki Seok Yang, Kyu Hwan An, Wangmyong Woo, Chang-Ho Lee, Younsuk Kim, Hyogun Bae, Kijoong Kim, Shinichi Iizuka
  • Patent number: 7746174
    Abstract: Embodiments of the invention may provide for systems and methods for providing a power amplifier with integrated passive device, thereby improving the performance of the power amplifier. The power amplifier may include a signal amplification section, a power combining section, and a coupling device section that interconnects the signal amplification section and the power combining section. The signal amplification section may be implemented on a first substrate, and the power combining section may be implemented on a second substrate, where the first substrate and the second substrate may be different. The power combining section may be implemented by the integrated passive device (IPD) that may have characteristics of high performance passive device with flexibility of implementing diverse functions, including a notch filter, a low pass filter, and/or bypass capacitance for bias network. The power combining section implemented by the integrated passive device may have an improved power combining efficiency.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: June 29, 2010
    Assignee: Samsung Electro-Mechanics Company, Ltd.
    Inventors: Ki Seok Yang, Jaejoon Chang, Kyu Hwan An, Wangmyong Woo, Chang-Ho Lee, Younsuk Kim, Hyogun Bae, Kijoong Kim, Shinichi Iizuka
  • Publication number: 20100148866
    Abstract: Systems and methods may be provided for a power amplifier system. The systems and methods may include a plurality of power amplifiers, where each power amplifier includes at least one output port. The systems and methods may also include a plurality of primary windings each having a first number of turns, where each primary winding is connected to at least one output port of the plurality of power amplifiers, and a single secondary winding inductively coupled to the plurality of primary windings, where the secondary winding includes a second number of turns greater than the first number of turns.
    Type: Application
    Filed: February 24, 2010
    Publication date: June 17, 2010
    Applicants: SAMSUNG ELECTRO-MECHANICS COMPANY, GEORGIA TECH RESEARCH CORPORATION
    Inventors: Chang-Ho Lee, Kyu Hwan An, Ki Seok Yang, Jaejoon Chang, Wangmyong Woo, Younsuk Kim, Haksun Kim, Ockgoo Lee, Dong Ho Lee, Hyungwook Kim, Joy Laskar
  • Patent number: 7675365
    Abstract: Systems and methods may be provided for a power amplifier system. The systems and methods may include a plurality of power amplifiers, where each power amplifier includes at least one output port. The systems and methods may also include a plurality of primary windings each having a first number of turns, where each primary winding is connected to at least one output port of the plurality of power amplifiers, and a single secondary winding inductively coupled to the plurality of primary windings, where the secondary winding includes a second number of turns greater than the first number of turns.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: March 9, 2010
    Assignees: Samsung Electro-Mechanics, Georgia Tech Research Corporation
    Inventors: Chang-Ho Lee, Kyu Hwan An, Ki Seok Yang, Jaejoon Chang, Wangmyong Woo, Younsuk Kim, Haksun Kim, Ockgoo Lee, Dong Ho Lee, Hyungwook Kim, Joy Laskar
  • Patent number: 7642858
    Abstract: Example embodiments of the invention may provide for active baluns. An example active balun may include a resonator that may convert a single-ended input signal to at least two differential input signals, and a differential switching block that includes first and second transistors that each receive a respective one of the at least two differential input signals from the resonator, where the first and second transistors may be cross-coupled to each other to provide a first differential output signal and a second differential output signal. An example active balun may further include one or more loads connected to the first and second differential output signals, and one or more stacked inverters that may provide a first output port and a second output port, where the first output port may be responsive to the first differential output signal and the second output port may be responsive to the second differential output signal.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: January 5, 2010
    Assignees: Samsung Electro-Mechanics Company, Georgia Tech Research Corporation
    Inventors: Dong Ho Lee, Ki Seok Yang, Yunseok Kim, Sanghee Kim, Hyogeun Bae, Kijoong Kim, Li Lee, Songcheol Hong, Chang-Ho Lee, Haksun Kim, Joy Laskar
  • Publication number: 20090309661
    Abstract: Embodiments of the invention may provide for enhancement systems and methods for a power amplifier output control system. In an example embodiment, driver amplifier control may be provided in conjunction with power amplifier control to improve the power efficiency and/or dynamic range of the transmitter system. Furthermore, control over the driver amplifier may allow for relaxed power control slope, which may lessens the burden of digital to analog converters (DACs) in transmitter systems such as cellular transmitter systems. Also, systems and methods in accordance with example embodiments of the invention may provide a less sensitive solution to operational environment variations such as temperature, battery power voltage and implementation IC process.
    Type: Application
    Filed: June 13, 2008
    Publication date: December 17, 2009
    Inventors: Jaejoon Chang, Ki Seok Yang, Kyu Hwan An, Wangmyong Woo, Chang-Ho Lee, Younsuk Kim, Hyogun Bae, Kijoong Kim, Shinichi Iizuka
  • Publication number: 20090309662
    Abstract: Embodiments of the invention may provide for systems and methods for providing a power amplifier with integrated passive device, thereby improving the performance of the power amplifier. The power amplifier may include a signal amplification section, a power combining section, and a coupling device section that interconnects the signal amplification section and the power combining section. The signal amplification section may be implemented on a first substrate, and the power combining section may be implemented on a second substrate, where the first substrate and the second substrate may be different. The power combining section may be implemented by the integrated passive device (IPD) that may have characteristics of high performance passive device with flexibility of implementing diverse functions, including a notch filter, a low pass filter, and/or bypass capacitance for bias network. The power combining section implemented by the integrated passive device may have an improved power combining efficiency.
    Type: Application
    Filed: June 12, 2008
    Publication date: December 17, 2009
    Inventors: Ki Seok Yang, Jaejoon Chang, Kyu Hwan An, Wangmyong Woo, Chang-Ho Lee, Younsuk Kim, Hyogun Bae, Kijoong Kim, Shinichi Iizuka
  • Patent number: 7576607
    Abstract: Embodiments of the invention may provide for power amplifier systems and methods. The systems and methods may include a power amplifier that generates a first differential output signal and a second differential output signal, a primary winding comprised of a plurality of primary segments, where a first end of each primary segment is connected to a first common input port and a second end of each primary segment is connected to a second common input port, where the first common input port is operative to receive the first differential output signal, and where the second common input port is operative to receive the second differential output signal, and a single secondary winding inductively coupled to the plurality of primary segments.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: August 18, 2009
    Assignees: Samsung Electro-Mechanics, Georgia Tech Research Corporation
    Inventors: Chang-Ho Lee, Ockgoo Lee, Jeonghu Han, Kyu Hwan An, Hyungwook Kim, Dong Ho Lee, Ki Seok Yang, Haksun Kim, Joy Laskar
  • Publication number: 20090184786
    Abstract: Embodiments of the invention may provide for power amplifier systems and methods. The systems and methods may include a power amplifier that generates a first differential output signal and a second differential output signal, a primary winding comprised of a plurality of primary segments, where a first end of each primary segment is connected to a first common input port and a second end of each primary segment is connected to a second common input port, where the first common input port is operative to receive the first differential output signal, and where the second common input port is operative to receive the second differential output signal, and a single secondary winding inductively coupled to the plurality of primary segments.
    Type: Application
    Filed: April 1, 2009
    Publication date: July 23, 2009
    Inventors: Chang-Ho Lee, Ockgoo Lee, Jeonghu Han, Kyu Hwan An, Hyungwook Kim, Dong Ho Lee, Ki Seok Yang, Haksun Kim, Joy Laskar
  • Patent number: 7560994
    Abstract: Example embodiments of the invention may provide systems and methods for a power amplifier. The systems and methods may include a first common-source device having a first source, a first gate, a first drain, and a first body, where the first source is connected to the first body, and wherein the first gate is connected to an input port. The systems and methods may further include a second common-gate device having a second source, a second gate, a second drain, and a second body, where the second source is connected to the first drain, where the second source is further connected to the second body, and where the second drain is connected to an output port.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: July 14, 2009
    Assignees: Samsung Electro-Mechanics Company, Georgia Tech Research Corporation
    Inventors: Ockgoo Lee, Jeonghu Han, Kyu Hwan An, Hyungwook Kim, Dong Ho Lee, Ki Seok Yang, Chang-Ho Lee, Haksun Kim, Joy Laskar
  • Publication number: 20090174515
    Abstract: Example embodiments of the invention may provide systems and methods for multiple transformers. The systems and methods may include a first transformer that may include a first primary winding and a first secondary winding, where the first primary winding may be inductively coupled to the first secondary winding, where the first transformer may be associated with a first rotational current flow direction in the first primary winding.
    Type: Application
    Filed: January 8, 2008
    Publication date: July 9, 2009
    Inventors: Dong Ho Lee, Ki Seok Yang, Chang-Ho Lee, Haksun Kim, Joy Laskar