Patents by Inventor Young-Chan Moon

Young-Chan Moon 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: 20190280732
    Abstract: Disclosed herein are a method for eliminating passive intermodulation distortion (PIMD) and an antenna apparatus using the same. According to an embodiment, the antenna apparatus incudes a main antenna used for transmission and reception of an RF signal; an auxiliary antenna used for reception of an RF signal; and a passive intermodulation distortion (PIMD) eliminator configured to calculate PIMD contained in a received signal of the main antenna using a received signal of the auxiliary antenna, and to eliminate the calculated PIMD from the received signal of the main antenna.
    Type: Application
    Filed: May 17, 2019
    Publication date: September 12, 2019
    Inventors: Young Chan MOON, Min Seon YUN, Sung-hwan SO
  • Patent number: 10403974
    Abstract: A compact antenna apparatus for a mobile communication system includes: a radome having at least one frequency band radiating element provided therein; at least one phase shifter portion which is provided in an inner side of the radome and which is connected to the radiating element to adjust a tilting angle of the radiating element; and a rotary knob portion which is provided so as to be exposed to the outside of the radome and which is directly coupled to the phase shifter portion to drive a phase shifter.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: September 3, 2019
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, In-Ho Kim, Oh-Seog Choi, Hyoung-Seok Yang, Sang-Hyeong Kim, Hee Kim, Hye-Mi Jung
  • Publication number: 20190268046
    Abstract: Provided is a multiple-input multiple-output (MIMO) antenna having a lightweight stacked structure. According to one aspect of the present invention, there is provided a MIMO antenna assembly having a lightweight stacked structure, in which a calibration network, which was provided between antenna elements and filters in the related art, is provided on one printed circuit board (PCB), together with a power amplifier and a digital circuit, and filters are closely coupled to the bottom of the PCB on which the feeding network is provided. The present invention employs a strategy in which an antenna assembly is reduced to a compact size while managing phase deviation caused due to filters at an acceptable level.
    Type: Application
    Filed: May 15, 2019
    Publication date: August 29, 2019
    Inventors: Duk Yong KIM, Bae Mook JEONG, Chang Woo YOO, Young Chan MOON, Nam Shin PARK, Bum Sik PARK, Min Seon YUN, Min Sik PARK, Sung Ho JANG
  • Publication number: 20190267701
    Abstract: Provided is an antenna device including a first antenna body, and a power supply module detachably attached to the first antenna body. The power supply module is provided on a fastening region of a first radiation fin of the first antenna body.
    Type: Application
    Filed: May 14, 2019
    Publication date: August 29, 2019
    Inventors: Duk Yong KIM, Young Chan MOON, Min Sik PARK, Chang Woo YOO, Bae Mook JEONG, Nam Shin PARK, Min Seon YUN
  • Patent number: 10355342
    Abstract: The present invention relates to an omnidirectional antenna for a mobile communication service, comprising: a plurality of radiation elements disposed on a horizontal surface with a mutually same angle so as to respectively radiate beams; and a power supply unit for distributing and providing a power supply signal to each of the plurality of radiation elements, wherein each of the plurality of radiation elements has a structure in which a horizontal polarization dipole radiation unit having two radiation arms is coupled to a vertical polarization dipole radiation unit having two radiation arms.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: July 16, 2019
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Oh-Seog Choi, In-Ho Kim, Hyoung-Seok Yang
  • Publication number: 20190214869
    Abstract: A hairpin winding motor for a vehicle may include a hairpin including a pattern coil formed from a bundle of a plurality of coils; a stator including a slot in which the hairpin is arranged; and a rotor configured to move in response to the stator.
    Type: Application
    Filed: July 30, 2018
    Publication date: July 11, 2019
    Inventors: Sang Hoon Moon, Dong Yeon Han, Yeon Ho Kim, Woong Chan Chae, Young Jin Shin, Kyung Soo Park, Hyoung Jun Cho, Jung Shik Kim
  • Publication number: 20190170825
    Abstract: A method of extracting impedance parameters of a three-phase motor utilizes a five-terminal network including first to third winding wires and opposite shaft ends. The method includes connecting two terminals, selected from among the winding wires and the shaft ends, to input and output terminals in order to measure voltage and current of the terminals and to extract input impedance parameters of the five-terminal network, extracting conversion parameters including voltage and current transfer matrices in a common mode, in which the winding wires are commonly connected to the input and output terminals, and in a differential mode, in which the winding wires are differentially connected to the input and output terminals, and calculating impedance parameters in a mixed mode, in which transfer impedance components for the shaft ends in the common mode and the differential mode are mixed, using the extracted input impedance parameters and conversion parameters.
    Type: Application
    Filed: November 8, 2018
    Publication date: June 6, 2019
    Inventors: Woong Chan Chae, Sang Hoon Moon, Jung Shik Kim, Young Jin Shin, Hyoung Jun Cho, Young Gon Ryu, Ki Jin Han
  • Patent number: 10294341
    Abstract: The present invention relates to a thermosetting resin composition for a semiconductor package and a prepreg using the same. Specifically, a thermosetting resin composition for a semiconductor package which exhibits a low curing shrinkage ratio and has a high glass transition temperature and greatly improved flowability by introducing acrylic rubber and mixing two specific inorganic fillers surface-treated with a binder of a specific composition at a certain ratio, and a prepreg using the same, are provided.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: May 21, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Hwa Yeon Moon, Yong Seon Hwang, Hee Yong Shim, Hyun Sung Min, Mi Seon Kim, Chang Bo Shim, Young Chan Kim, Seung Hyun Song, Won Ki Kim
  • Patent number: 10249940
    Abstract: A signal distributing/combining apparatus in an antenna device of a mobile communication base station includes a circuit board configured to have an upper surface formed with a signal distributing/combining conductor pattern for a high frequency signal distributing/combining operation, and a support plate configured to have an upper mounting surface of a size corresponding to the circuit board, to mate with the circuit board so that an underside of the circuit board is in close contact with the upper mounting surface for supporting the circuit board, and to fixedly mate with the antenna device at a reflection plate on a bottom side of the support plate. The support plate is provided with a plurality of cable holders for supporting and fixating coaxial cables for signal transmission which are connected from outside of the apparatus.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: April 2, 2019
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Sung-Hwan So, Hun-Jung Jung, Kwang-Seok Choi, Jae-Jeng Choi
  • Patent number: 10224643
    Abstract: In the present invention, a radio communication antenna having a narrow beam width comprises: a reflecting plate provided in the form of a plate of rectangular shape; and one radiating module disposed on the reflecting plate and generating x-polarized waves. Here: the radiating module comprises four radiating elements of dipole structure; the four radiating elements are respectively disposed at four edge portions of the reflecting plate, and each comprises two radiating arms placed in the direction extending along both sides relative to the edges; and, among the four radiating elements, those radiating elements that face each other diagonally are linked in movement so as to generate one of the x-polarized waves.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: March 5, 2019
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Oh-Seog Choi, In-Ho Kim, Sang-Hyeong Kim
  • Publication number: 20190068250
    Abstract: A distributed antenna system supporting MIMO service is disclosed. Some embodiments provide a distributed antenna system supporting MIMO communication, including first node, second node and one transmission line. The first node receives MIMO downlink signals of a plurality of MIMO services each including N (a natural number of 2 or more) MIMO downlink signals, and performs, for each MIMO service, frequency-conversion of N?1 MIMO downlink signals among the N MIMO downlink signals, to different frequency band from original frequency band, to generate N MIMO downlink signals without mutually overlapping frequency bands. The second node performs, for each MIMO service, frequency-conversion of the MIMO downlink signals having been frequency-converted by first node, in a complementary manner, to reconstruct the MIMO downlink signals of original frequency band. The single transmission line is used between the first node and second node for transmitting N downlink signals without mutually overlapping frequency bands.
    Type: Application
    Filed: October 26, 2018
    Publication date: February 28, 2019
    Inventors: Duk-yong KIM, Young-chan MOON, Bung-chul KIM, Sang-hyo KANG
  • Patent number: 10205233
    Abstract: The present invention relates to a dual-polarization antenna including an isolation providing device including: a transmission antenna element outputting a transmission signal provided via a feeder through a first port; a receiving antenna element receiving a reception signal so as to provide same to the second port; a first coupler distributing part of the transmission signal; an equalizer equalizing the distributed signal from the first coupler to a preset waveform; a second coupler receiving the output of the equalizer so as to couple same to a signal output to the second port; and a conductor forming a signal delivery path between the first coupler, the equalizer, and the second coupler.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: February 12, 2019
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Sunghwan So, Yong-Won Seo
  • Patent number: 10090912
    Abstract: The present invention is an antenna system of a mobile communication base station, comprising: a signal separation unit which is arranged within a radome of an antenna, and which separates a synthetic signal of a wireless signal transmitted from a main system of a base station through a feeder cable, a direct current power signal and a control signal having a preset format for controlling the antenna, in such a manner that the direct current power signal and the control signal are output by being separated from the wireless signal and the wireless signal is provided to an antenna unit; and equipment to be remotely controlled having a modem for receiving the direct current power signal and the control signal output from the signal separation unit and using the direct current power signal as an operating power and converting the control signal into a format which is preset to be internally recognizable in the radome of the antenna, the equipment to be remotely controlled performing an antenna control operation
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: October 2, 2018
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Sung-Hwan So, Jong-Han Kim, Goog-Seong Jeong, Dong-Hun Lee, Ki-Hoon Woo
  • Patent number: 10033110
    Abstract: The present invention relates to a multi-band, multi-polarized wireless communication antenna, which comprises: a reflector; at least one first radiation module of a first band which is installed on the reflector; and at least one second or third radiation module of a second band or a third band installed on the reflector, wherein the first radiation module comprises first to fourth radiating elements having a dipole structure, the first to fourth radiating elements are configured such that every two radiating arms thereof are connected in the shape of letter “¬”, one of the two radiating arms is configured to be placed side by side along side of the reflector, and the second or third radiation module is installed to be included within an installation range of the first radiation module.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: July 24, 2018
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Sung-Hwan So, Soon-Wook Kim, Jae-Hwan Lim, Seong-Ha Lee
  • Patent number: 9992757
    Abstract: The present invention relates to a mobile communication base station system comprising: a donor unit connected to a baseband unit; and a remote unit installed at the base station antenna side, wherein the donor unit has a baseband signal processing part including a digital signal processing part for processing interface with the baseband unit, a wireless communication part for processing a wireless communication signal between the baseband signal processing part and the remote unit, and a synchronization and communication control part for processing a synchronizing signal and a communication control signal from the baseband unit, and wherein the remote unit has a service signal processing part for processing MIMO interface with a base station antenna, a wireless communication part for processing a wireless communication signal between the service signal processing part and the donor unit, and a synchronization and communication control part for processing a synchronizing signal and a communication control sig
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: June 5, 2018
    Assignees: KMW INC., Sogang University Research Foundation
    Inventors: Young-Chan Moon, Myong-Sik Lee, Chang-Seob Choi, Dae-Hyoung Hong, Sang-Won Yun, Won-Jin Sung, Young-Lok Kim, Ok-Hyun Jeong, Doo-Hun Choi
  • Patent number: 9917627
    Abstract: A base station apparatus of mobile communication system is provided, including an antenna system including first antenna for transceiving signals for a first path among MIMO paths, and a second antenna for transceiving signals for a second path among the MIMO paths, a first duplexer including transmission filter for processing the transmitted signal of first path and reception filter for processing the received signal of second path, a second duplexer including reception filter for processing the received signal of first path and transmission filter for processing the transmitted signal of second path, and a path change unit for providing the transmitted signal provided from the first duplexer to the first antenna and the received signal provided from the first antenna to the second duplexer and to provide the transmitted signal from the second duplexer to the second antenna and the received signal from the second antenna to the first duplexer.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: March 13, 2018
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Nam-Shin Park, Chang-Seob Choi, In-Ho Na
  • Patent number: 9917626
    Abstract: A base station apparatus of mobile communication system is provided, including an antenna system including first antenna for transceiving signals for a first path among MIMO paths, and a second antenna for transceiving signals for a second path among the MIMO paths, a first duplexer including transmission filter for processing the transmitted signal of first path and reception filter for processing the received signal of second path, a second duplexer including reception filter for processing the received signal of first path and transmission filter for processing the transmitted signal of second path, and a path change unit for providing the transmitted signal provided from the first duplexer to the first antenna and the received signal provided from the first antenna to the second duplexer and to provide the transmitted signal from the second duplexer to the second antenna and the received signal from the second antenna to the first duplexer.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: March 13, 2018
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Nam-Shin Park, Chang-Seob Choi, In-Ho Na
  • Patent number: 9917361
    Abstract: The present invention relates to a variable beam control antenna for a mobile communication system, the antenna comprising: a radome formed on the front surface at which a signal is emitted; multiple emitters vertically arranged in at least one row; a frame portion for supporting the radome and the multiple emitters; and a direction-changing module which rotates each of the multiple emitters vertically and horizontally with respect to a reference point in order to change the emission direction of the multiple emitters.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: March 13, 2018
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Sung-Hwan So, In-Ho Kim, Oh-Seog Choi, Hyoung-Seok Yang
  • Publication number: 20180006363
    Abstract: A signal distributing/combining apparatus in an antenna device of a mobile communication base station includes a circuit board configured to have an upper surface formed with a signal distributing/combining conductor pattern for a high frequency signal distributing/combining operation, and a support plate configured to have an upper mounting surface of a size corresponding to the circuit board, to mate with the circuit board so that an underside of the circuit board is in close contact with the upper mounting surface for supporting the circuit board, and to fixedly mate with the antenna device at a reflection plate on a bottom side of the support plate. The support plate is provided with a plurality of cable holders for supporting and fixating coaxial cables for signal transmission which are connected from outside of the apparatus.
    Type: Application
    Filed: September 15, 2017
    Publication date: January 4, 2018
    Inventors: Young-Chan MOON, Sung-Hwan SO, Hun-Jung JUNG, Kwang-Seok CHOI, Jae-Jeng CHOI
  • Publication number: 20170271760
    Abstract: A compact antenna apparatus for a mobile communication system includes: a radome having at least one frequency band radiating element provided therein; at least one phase shifter portion which is provided in an inner side of the radome and which is connected to the radiating element to adjust a tilting angle of the radiating element; and a rotary knob portion which is provided so as to be exposed to the outside of the radome and which is directly coupled to the phase shifter portion to drive a phase shifter.
    Type: Application
    Filed: June 2, 2017
    Publication date: September 21, 2017
    Inventors: Young-Chan MOON, In-Ho KIM, Oh-Seog CHOI, Hyoung-Seok YANG, Sang-Hyeong KIM, Hee KIM, Hye-Mi JUNG