Patents by Inventor Gyu Suck Kim

Gyu Suck Kim 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: 10218314
    Abstract: A power amplifier includes a common source amplifier and a common gate amplifier circuit. The common source amplifier circuit has a terminal connected to a radio frequency (RF) input terminal and uses a source terminal commonly as an input terminal and an output terminal of the power amplifier. The common gate amplifier circuit has a terminal connected to the common source amplifier circuit and another terminal connected to an RF output terminal, and uses a gate terminal commonly as the input terminal and the output terminal of the power amplifier. The common gate amplifier circuit includes a Doherty amplifier including a main power amplifier and an auxiliary power amplifier that is connected to the main power amplifier in parallel.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: February 26, 2019
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Yun Su Jin, Gyu Suck Kim, Song Cheol Hong
  • Patent number: 10171048
    Abstract: A power amplifier according to examples includes an amplifying circuit configured to amplify an input signal, a feedback circuit configured to feedback the amplified signal to the amplifying unit, and a feedback controlling circuit configured to control a power of the fed-back signal based on a power of the input signal. The feedback controlling unit performs controlling so that the power of the fed-back signal is increased as the power of the input signal is increased.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: January 1, 2019
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Seung Hoon Kang, Gyu Suck Kim, Song Cheol Hong
  • Patent number: 9979362
    Abstract: A power amplifier include an amplifier including at least one field effect transistor (FET) that operates in an amplifying stage configured to amplify an input signal, and a body controller configured to control a bias voltage of a body terminal of the FET based on a power of the input signal. The body controller performs controlling so that the bias voltage of the body terminal is reduced in response to the power of the input signal being increased. Accordingly, such a power amplifier exhibits improved linearity.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: May 22, 2018
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Seung Hoon Kang, Gyu Suck Kim, Song Cheol Hong
  • Patent number: 9923519
    Abstract: A power amplifier apparatus may include an amplifier configured to amplify an input signal and a delay transferring circuit connected between an input terminal and an output terminal of the amplifier, the delay transferring circuit configured to delay the input signal to transfer the delayed input signal to the output terminal of the amplifier.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: March 20, 2018
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Gyu Suck Kim
  • Publication number: 20170366140
    Abstract: A power amplifier includes a common source amplifier and a common gate amplifier circuit. The common source amplifier circuit has a terminal connected to a radio frequency (RF) input terminal and uses a source terminal commonly as an input terminal and an output terminal of the power amplifier. The common gate amplifier circuit has a terminal connected to the common source amplifier circuit and another terminal connected to an RF output terminal, and uses a gate terminal commonly as the input terminal and the output terminal of the power amplifier. The common gate amplifier circuit includes a Doherty amplifier including a main power amplifier and an auxiliary power amplifier that is connected to the main power amplifier in parallel.
    Type: Application
    Filed: February 13, 2017
    Publication date: December 21, 2017
    Applicants: SAMSUNG ELECTRO-MECHANICS CO., LTD., Korea Advanced Institute of Science and Technology
    Inventors: Yun Su JIN, Gyu Suck KIM, Song Cheol HONG
  • Publication number: 20160276981
    Abstract: A power amplifier according to examples includes an amplifying circuit configured to amplify an input signal, a feedback circuit configured to feedback the amplified signal to the amplifying unit, and a feedback controlling circuit configured to control a power of the fed-back signal based on a power of the input signal. The feedback controlling unit performs controlling so that the power of the fed-back signal is increased as the power of the input signal is increased.
    Type: Application
    Filed: January 12, 2016
    Publication date: September 22, 2016
    Applicants: Samsung Electro-Mechanics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Seung Hoon KANG, Gyu Suck KIM, Song Cheol HONG
  • Publication number: 20160276982
    Abstract: A power amplifier include an amplifier including at least one field effect transistor (FET) that operates in an amplifying stage configured to amplify an input signal, and a body controller configured to control a bias voltage of a body terminal of the FET based on a power of the input signal. The body controller performs controlling so that the bias voltage of the body terminal is reduced in response to the power of the input signal being increased. Accordingly, such a power amplifier exhibits improved linearity.
    Type: Application
    Filed: January 12, 2016
    Publication date: September 22, 2016
    Applicants: SAMSUNG ELECTRO MECHANICS CO., LTD., Korea Advanced Institute of Science and Technology
    Inventors: Seung Hoon Kang, Gyu Suck Kim, Song Cheol Hong
  • Publication number: 20160268973
    Abstract: A power amplifier apparatus may include an amplifier configured to amplify an input signal and a delay transferring circuit connected between an input terminal and an output terminal of the amplifier, the delay transferring circuit configured to delay the input signal to transfer the delayed input signal to the output terminal of the amplifier.
    Type: Application
    Filed: January 11, 2016
    Publication date: September 15, 2016
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Gyu Suck KIM
  • Patent number: 9337778
    Abstract: A bias circuit may include an envelope detecting unit detecting an envelope of an input signal, a source voltage generating unit generating a source voltage using a power supply voltage, and an envelope amplifying unit receiving the power supply voltage and the source voltage as a driving voltage and amplifying an envelope signal detected by the envelope detecting unit to generate a first bias voltage.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: May 10, 2016
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Chan Yong Jeong, Gyu Suck Kim, Song Cheol Hong, Tae Hwan Joo
  • Publication number: 20150244326
    Abstract: A bias circuit may include an envelope detecting unit detecting an envelope of an input signal, a source voltage generating unit generating a source voltage using a power supply voltage, and an envelope amplifying unit receiving the power supply voltage and the source voltage as a driving voltage and amplifying an envelope signal detected by the envelope detecting unit to generate a first bias voltage.
    Type: Application
    Filed: September 26, 2014
    Publication date: August 27, 2015
    Inventors: Chan Yong JEONG, Gyu Suck KIM, Song Cheol HONG, Tae Hwan JOO
  • Publication number: 20150188496
    Abstract: A gate bias control circuit may includes a signal input unit connected to an input terminal of a power amplifier to receive an input signal from the power amplifier, a rectifying unit rectifying the input signal when the input signal has a voltage higher than a preset reference voltage, and a voltage regulating unit regulating a bias voltage of the power amplifier according to a level of the rectified input signal from the rectifying unit.
    Type: Application
    Filed: May 19, 2014
    Publication date: July 2, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Gyu Suck KIM
  • Publication number: 20150188500
    Abstract: A power amplifier may include: an amplification unit amplifying a power level of an input signal, a negative feedback circuit unit connected between an input terminal and an output terminal of the amplification unit and a linearization circuit unit connected between the negative feedback circuit unit and the input terminal of the amplification unit to predistort and linearize a signal from the negative feedback circuit unit, and to provide the signal to the input terminal of the amplification unit.
    Type: Application
    Filed: July 25, 2014
    Publication date: July 2, 2015
    Inventors: Seung Hoon KANG, Chan Yong JEONG, Gyu Suck KIM, Song Cheol HONG
  • Patent number: 8803607
    Abstract: There is provided a power amplifier capable of increasing linear output power and efficiency without sacrificing an overall gain by employing a vector modulation function in a driving stage, with no separate vector modulator. The power amplifier includes a driving stage performing vector-modulation on an input RF signal to provide an I channel signal and a Q channel signal having different phases and amplifying the I channel signal and the Q channel signal to set gains; and a power stage amplifying power levels of the signals amplified by the driving stage.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: August 12, 2014
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea Advanced Institute of Science & Technology
    Inventors: Ki Yong Son, Gyu Suck Kim, Yoo Sam Na, Song Cheol Hong, Bon Hoon Koo
  • Patent number: 8736376
    Abstract: There is provided a power amplifier module having a bias circuit, in which a bias power is supplied to an amplifier by differently setting an impedance between an input signal terminal and a reference power terminal and an impedance between the input signal terminal and a ground. The power amplifier module includes: an amplifier unit receiving a bias power to amplify an input signal; and a bias unit supplying the bias power to the amplifier, by differently setting an impedance between an input signal terminal transmitting the input signal therethrough and a reference power terminal transmitting a reference power having a predetermined voltage level and an impedance between the input signal terminal and a ground.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: May 27, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Gyu Suck Kim, Yoo Sam Na
  • Publication number: 20140035684
    Abstract: There are provided a control circuit for a digitally controlled oscillator and a control apparatus for a digitally controlled oscillator using the same. The control circuit for a digitally controlled oscillator includes: a peak detection circuit detecting amplitude of a signal output from the digitally controlled oscillator; and a transconductance control circuit comparing an output of the peak detection circuit with a predetermined reference signal to control a transconductance value of a negative transconductance circuit included in the digitally controlled oscillator.
    Type: Application
    Filed: November 13, 2012
    Publication date: February 6, 2014
    Applicants: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yoo Sam NA, Kang Yoon LEE, Dong Su LEE, Hyung Gu PARK, Hong Jin KIM, Gyu Suck KIM, Young Gun PU
  • Publication number: 20140002204
    Abstract: There is provided a digitally controlled oscillator. The digitally controlled oscillator includes a resonance circuit unit generating a resonance signal according to an equivalent capacitance formed by a parallel connection between a first capacitance varied depending on a digital control code and a second capacitance varied depending on an inverted digital control code generated by inverting the digital control code, and preset inductance; and an oscillation circuit unit providing negative resistance to the resonance circuit unit and forming oscillation conditions in the resonance circuit unit.
    Type: Application
    Filed: October 4, 2012
    Publication date: January 2, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yoo Hwan KIM, Gyu Suck KIM, Hyun Hwan YOO, Yoo Sam NA
  • Patent number: 8493169
    Abstract: Disclosed herein are a transformer and a method of manufacturing the same. The transformer includes: a primary side winding having a loop shape; a secondary side winding formed on the same plane as that of the primary side winding in a remaining section except for at least a section at which it intersects with the primary side winding and having the same loop shape as that of the primary side winding so as to be electromagnetically coupled to the primary side winding; and an intersecting section formed so that the primary side and secondary side windings having the sum of the turn numbers of 3 or more intersect with each other in a two-layer structure, wherein the intersecting section includes at least one point of intermediate node having one side connected in a first layer and the other side connected in a second layer.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: July 23, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Paek, Yoo Sam Na, Hyeon Seok Hwang, Gyu Suck Kim, Su Syeong Kim, Shin Hwan Hwang, Moon Suk Jeong
  • Patent number: 8482355
    Abstract: There is provided a complementary metal oxide semiconductor (CMOS) power amplifier including: a load unit connected between an operating voltage supply terminal and an output terminal; an amplifying unit formed as a cascode structure between the load unit and a ground, amplifying a power of an input signal input through an input terminal and outputting the amplified signal through an output terminal; and a threshold voltage control unit varying a threshold voltage of the amplifying unit according to a magnitude of the input signal input through the input terminal.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: July 9, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Byeong Hak Jo, Yoo Sam Na, Hyeon Seok Hwang, Moon Suk Jeong, Gyu Suck Kim, Moon Sun Kim
  • Publication number: 20130162350
    Abstract: There is provided a power amplifier capable of increasing linear output power and efficiency without sacrificing an overall gain by employing a vector modulation function in a driving stage, with no separate vector modulator. The power amplifier includes a driving stage performing vector-modulation on an input RF signal to provide an I channel signal and a Q channel signal having different phases and amplifying the I channel signal and the Q channel signal to set gains; and a power stage amplifying power levels of the signals amplified by the driving stage.
    Type: Application
    Filed: February 28, 2012
    Publication date: June 27, 2013
    Inventors: Ki Yong SON, Gyu Suck KIM, Yoo Sam NA, Song Cheol Hong, Bon Hoon KOO
  • Publication number: 20130076447
    Abstract: There is provided a power amplifier module having a bias circuit, in which a bias power is supplied to an amplifier by differently setting an impedance between an input signal terminal and a reference power terminal and an impedance between the input signal terminal and a ground. The power amplifier module includes: an amplifier unit receiving a bias power to amplify an input signal; and a bias unit supplying the bias power to the amplifier, by differently setting an impedance between an input signal terminal transmitting the input signal therethrough and a reference power terminal transmitting a reference power having a predetermined voltage level and an impedance between the input signal terminal and a ground.
    Type: Application
    Filed: April 11, 2012
    Publication date: March 28, 2013
    Inventors: Gyu Suck KIM, Yoo Sam NA