Patents by Inventor Hoon YUN

Hoon YUN 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: 20100207827
    Abstract: An antenna radiation pattern measurement device that measures a radiation pattern of an AUT by using a source antenna includes a control unit, an analysis unit, and a measurement unit. The control unit controls driving of the source antenna and the AUT. The analysis unit measures an electric field value from a radio frequency (RF) signal that is transmitted from one of the source antenna and the AUT and received by the other antenna. In addition, the measurement unit controls the control unit and the analysis unit and measures a radiation pattern of the AUT by using the electric field value.
    Type: Application
    Filed: September 19, 2008
    Publication date: August 19, 2010
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Soon-Soo Oh, Yong-Heui Cho, In-Kui Cho, Je Hoon Yun, Soon Ik Jeon, Chang-Joo Kim
  • Patent number: 7768362
    Abstract: There is provided a comb polarizer suitable for millimeter band applications including: a waveguide having an aperture side formed of two separable half waveguides, and a comb shaped conductive unit having a plurality of cogs interposed between two half waveguides for transforming a linear polarized signal to a circular polarized signal.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: August 3, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Soon-Young Eom, Je-Hoon Yun, Soon-Ik Jeon, Chang-Joo Kim, Yury Borlsovich Korchemkin
  • Publication number: 20100156695
    Abstract: An electromagnetic absorber using resistive material includes a ground plane of a conductive material; a dielectric layer formed on the ground plane; and a pattern layer in which specific unit cell patterns made of a resistive material are periodically arranged on the dielectric layer. The electromagnetic absorber is applied to an electronic toll collection system, a transportation device, a building structure, an electronic device and an anechoic chamber.
    Type: Application
    Filed: August 12, 2009
    Publication date: June 24, 2010
    Inventors: Dong-Uk SIM, Jong Hwa KWON, Sang Il KWAK, Je Hoon YUN, Chang-Joo KIM
  • Publication number: 20100156523
    Abstract: An electromagnetic-wave suppression structure in a multilayer PCB or package structure is supplied with a power to be used therein by a power distribution network including a power plane and a ground plane. The multilayer PCB and package includes: an electromagnetic-wave suppression structure including an electromagnetic band-gap; and the electromagnetic-wave suppression structure is formed at a specific portion(s) of the power plane and/or the ground plane to suppress noises.
    Type: Application
    Filed: October 14, 2009
    Publication date: June 24, 2010
    Inventors: Jong Hwa KWON, Dong-Uk SIM, Sang Il KWAK, Je Hoon YUN, Chang-Joo KIM
  • Publication number: 20100156739
    Abstract: An apparatus for reducing electromagnetic waves includes a dielectric layer and a plurality of metal unit cells periodically formed over the dielectric layer. The apparatus further includes an adhesive formed under the dielectric layer for attaching the apparatus to a radiator radiating electromagnetic waves.
    Type: Application
    Filed: December 9, 2009
    Publication date: June 24, 2010
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Il KWAK, Jong Hwa Kwon, Dong-Uk Sim, Je Hoon Yun
  • Publication number: 20100141344
    Abstract: A reference current bias circuit includes a self-bias circuit configured to provide a bias current to an amplifier; a basic bandgap circuit coupled to inputs of the amplifier; a startup circuit configured to support an initial operation of the amplifier; a temperature compensator configured to include a first mirroring unit for mirroring current according to a positive temperature coefficient characteristic from the basic bandgap circuit; and a second mirroring unit for mirroring current according to a negative temperature coefficient characteristic from the basic bandgap circuit, and to provide a reference current by combining the current of the first mirroring unit and the current of the second mirroring unit; and a reference current mirroring unit configured to generate reference current biases based on the reference current from the temperature compensator.
    Type: Application
    Filed: July 22, 2009
    Publication date: June 10, 2010
    Inventors: Young-Ho KIM, Je-Hoon YUN
  • Publication number: 20100128124
    Abstract: A camera based positioner (CBP) for near-field measurement and a method therefor, and a near-field measurement system are provided. A measurement probe and an antenna under test (AUT) are automatically aligned to a position for near-field antenna measurement by recognizing a position and a rotation angle of the AUT based on an interval and an angle between neighboring laser sources represented in an image taken by emitting laser beams from at least two laser sources located with a predetermined interval and a predetermined angle.
    Type: Application
    Filed: April 24, 2008
    Publication date: May 27, 2010
    Inventors: Yong-Heui Cho, Soon-Soo Oh, Jung-Ick Moon, Joung-Myoun Kim, Je-Hoon Yun
  • Publication number: 20100126185
    Abstract: A refrigerator is provided. The refrigerator may include a body having a storage room, an ice making chamber formed separately from the storage room, and a thermoelectric-module provided in the ice making chamber to generate cold air. The thermoelectric-module does not require a cold air duct to cool the ice making chamber. As a result, space utilization is improved and a capacity of the refrigerator is improved. In addition, energy efficiency may be enhanced because a heater is not required to remove the frost from a cold air duct.
    Type: Application
    Filed: August 25, 2009
    Publication date: May 27, 2010
    Inventors: Yeon Woo CHO, Gye Young Song, Young Hoon Yun
  • Publication number: 20100109964
    Abstract: Provided is a shaped-beam antenna having a multi-layered conductive element array surrounded by a dielectric ring. The shaped-beam antenna includes: a planar excitation element having a radiation structure according to a required polarization; a multi-layered conductive element array disposed on the planer excitation element, wherein the multi-layered conductive element array is formed by layering conductive elements at an arbitrary interval; and a dielectric ring surrounding the multi-layered conductive element array at a predetermined separation distance therefrom. Accordingly, it is possible to reduce the entire size of the shaped-beam antenna and manufacturing costs thereof.
    Type: Application
    Filed: February 26, 2008
    Publication date: May 6, 2010
    Inventors: Soon-Young Eom, Je-Hoon Yun, Soon-Ik Jeon, Chang-Joo Kim
  • Publication number: 20100085267
    Abstract: Provided is a small monopole antenna, which can generate a plurality of resonant frequencies, have a high antenna efficiency, and be easily installed. The antenna includes a first antenna element formed of a coaxial cable; a second antenna element sealing the first antenna element and sharing a feed point with the first antenna element; and a feeder cable for feeding electric power to the feed point. This antenna is applied as a small antenna.
    Type: Application
    Filed: October 26, 2007
    Publication date: April 8, 2010
    Applicant: Electronics and Telecommunications Research Instit
    Inventors: Je-Hoon Yun, Soon-Young Eom, Joung-Myoun Kim, Yong-Hee Cho, Young-Kwon Hahm, Dae-Young Kim, Soon-Ik Jeon
  • Publication number: 20100073246
    Abstract: Provided is a system and method for measuring an antenna radiation pattern in a Fresnel region based on a phi-variation method. The system includes a rotator for changing angles of a reference antenna and a target antenna; a vector network analyzer for obtaining radiation pattern data in accordance with transmission/reception radio frequency (RF) signals between the reference antenna and the target antenna; a measurement unit for calculating a far-field radiation pattern based on the radiation pattern data received from the vector network analyzer; and a controller for controlling the rotator according to a measurement angle transmitted from the measurement unit.
    Type: Application
    Filed: November 30, 2007
    Publication date: March 25, 2010
    Inventors: Soon-Soo Oh, Yong-Hee Cho, Je-Hoon Yun, Joung-Myoun Kim, Jung-Ick Moon
  • Patent number: 7673761
    Abstract: A shelf of a wine refrigerator includes a frame disposed in a horizontal direction inside a chill room. A plurality of support wires extend in the forward and backward directions of the frame at predetermined intervals in the right and left directions of the frame. A plurality of elastic support members inserted onto each support wire elastically support items, such as wine bottles.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: March 9, 2010
    Assignee: LG Electronics Inc.
    Inventors: Dong-Hoon Lee, Tae-Hee Lee, Young-Hoon Yun, Yong-Gu Kim
  • Publication number: 20100001922
    Abstract: Provided is an H-type monopole isolation antenna. The antenna provides an H-type monopole isolation antenna which can gain a high bi-directional transmitting/receiving isolation between a transmitting antenna and a receiving antenna of co-channel/co-polarization by including an antenna symmetrically positioned in right/left sides based on a covering means. A transmitting/receiving isolation antenna for maintaining high isolation between a transmitting signal and a receiving signal includes a cover which includes a conductor; and first and second antennas which are bisymmetrically positioned in right and left parts of the covering means and separately operated as a transmitting antenna or a receiving antenna. The antenna is used in a co-channel bi-direction repeater system.
    Type: Application
    Filed: December 21, 2005
    Publication date: January 7, 2010
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Je-hoon Yun, Joung-myoun Kim, Ung-hee Park, Soon-ik Jeon
  • Publication number: 20090322634
    Abstract: Provided is a loop antenna. The loop antenna includes a first antenna element embodied as a coaxial cable, a second antenna element embodied as a line and connected to one end of the first antenna element in series, a third antenna eLement embodied as a line, having one end connected to a ground plane and the other end connected to the other end of the first antenna element in series, and a power feeding cable for supplying power to the second antenna element.
    Type: Application
    Filed: October 26, 2007
    Publication date: December 31, 2009
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Je-Hoon Yun, Jung-Ick Moon, Soon-Soo Oh, Min-Sung Kwon, Sung-Uk You, Chang-Joo Kim, Chieteuk Ahn
  • Publication number: 20090322633
    Abstract: Provided is a small monopole antenna having a loop feeder. The small monopole antenna having a loop feeder includes: a loop element forming a loop along a predetermined plane and having a loop feeder at the center thereof; a non-feeding type monopole antenna element including one end connected to a wire of the loop element and other end connected to a ground unit by being bended at the center of the loop element; a ground unit for grounding other end of the non-feeding type monopole antenna; and a first connecting unit for connecting the non-feeding type monopole antenna to an external device for feeding the loop feeder of the loop element through the non-feeding type monopole antenna.
    Type: Application
    Filed: July 21, 2006
    Publication date: December 31, 2009
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Je-Hoon Yun, Jung-Ick Moon, Joung-Myoun Kim, Chang-Joo Kim
  • Publication number: 20090267849
    Abstract: Provided is a transmitting/receiving isolation antenna that can perform wireless bi-directional communication in the co-channel, co-polarization and co-time by acquiring high isolation from transmitting and receiving antennas having co-time, co-channel and co-polarization and set up adjacently. The isolation antenna includes a first antenna; second and third antennas symmetrically positioned in the same distance from the first antenna; a shielding unit symmetrically positioned between the first and second antennas, and between the first and third antennas; and a signal removing unit for removing a signal transmitted from the first antenna to the second and third antennas.
    Type: Application
    Filed: December 21, 2005
    Publication date: October 29, 2009
    Inventors: Je-hoon Yun, Jong-sik Lim, Jung-ick Moon, Chang-joo Kim
  • Patent number: 7589692
    Abstract: A planar inverted F antenna having a radiation patch having an asymmetric shape of linearly-tapered rectangle with a plurality of corrugated hollows is disclosed. The planar inverted F antenna having a radiation patch, includes: a first radiation patch for radiating a signal; a ground plate for grounding the first radiation patch; a feeding line for supplying an electric power to the first radiation patch; a short plate having one side coupled to the first radiation patch and other side coupled to the ground plate for shorting the first radiation patch, wherein the first radiation patch having an asymmetrical shape of linearly tapered rectangle and has one or more corrugated hollows.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: September 15, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Byung-Chan Kim, Je-Hoon Yun, Hyung-Do Choi
  • Publication number: 20090213021
    Abstract: Provided is an isolation antenna for a repeater which can acquire high isolation by using loop and dipole antennas, which are positioned in opposite directions to each other based on a shielding means, in a unidirectional repeater generally used in broadcasting or wireless communications even though transmitting antenna/receiving antennas having a co-channel are set up closely to each other. The transmitting/receiving isolation antenna includes: a shielding means including an electric conductor; a first antenna of a dipole antenna type in one side of the shielding means; and a second antenna of a loop antenna type in an opposite side of the shielding means where the first antenna is positioned.
    Type: Application
    Filed: December 21, 2005
    Publication date: August 27, 2009
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Je-hoon Yun, Soon-ik Jeon, Jong-sik Lim, Jung-ick Moon, Joung-myoun Kim, Seung-won Kim, Yong-tae Lee, Chang-joo Kim
  • Publication number: 20090160706
    Abstract: There is a provided a system for measuring an antenna radiation pattern in a Fresnel region, including: a fixed antenna and a movable antenna located in the Fresnel region to acquire a far-field radiation pattern; a moving unit for moving upward or downward to adjust a measuring angle of the movable antenna; a rotation unit to rotate a rotation shaft horizontally; a vector network analyzing unit for outputting an radio frequency (RF) signal to one of the fixed antenna and the movable antenna as a transmission antenna, receiving the RF signal received through the other one of the fixed antenna and the movable antenna as a receiving antenna, and detecting a complex value; a control and communication unit for controlling the vector network analyzing unit and a control unit, and performing a data communication; and the control unit for providing a vertical/horizontal rotation force to the moving unit and the rotation unit under a control of the control and communication unit.
    Type: Application
    Filed: April 10, 2007
    Publication date: June 25, 2009
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Soon-Soo Oh, Je-Hoon Yun, Jung-Ick Moon, Joung-Myoun Kim, Yong-Heui Cho
  • Patent number: 7545328
    Abstract: Provided are an antenna using an inductively coupled feeding method, a Radio Frequency Identification (RFID) tag thereof, and an antenna impedance matching method thereof. The antenna includes a resonator for determining a resonance frequency of the antenna and a feeder for providing an RF signal to an element connected to the antenna. An RFID tag includes an antenna which receives an RF signal from the RFID reader, an RF front-end which rectifies and detects the RF signal, and a signal processor which is connected to the RF front-end. Particularly, the antenna includes a resonator for determining a resonance frequency of an antenna and a feeder for providing the RF signal to the RF front-end, wherein mutual inductive coupling between the resonator and the feeder is performed.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: June 9, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hae-Won Son, Won-Kyu Choi, Je-Hoon Yun, Cheol-Sig Pyo, Jong-Suk Chae