Patents by Inventor Hong-yi Kim
Hong-yi 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).
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Patent number: 10224644Abstract: A series-fed E-shaped patch antenna array has co-polarized parasitic patches to improve aperture efficiency. Each of microstrip parasitic patches is inserted between a plurality of microstrip E-shaped patch antennas. The parasitic patches are co-polarized with the E-shaped patch antennas so that the current flows in the parasitic patches and the E-shaped patch antennas have the same polarity. Additional radiation from the co-polarized microstrip parasitic patches significantly improves gain flatness, gain and aperture efficiency due to offset resonance frequency.Type: GrantFiled: November 7, 2017Date of Patent: March 5, 2019Assignee: Korea Advanced Institute of Science and TechnologyInventors: Chul-Soon Park, Tae-Hwan Jang, Hong-Yi Kim
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Publication number: 20190067834Abstract: A series-fed E-shaped patch antenna array has co-polarized parasitic patches to improve aperture efficiency. Each of microstrip parasitic patches is inserted between a plurality of microstrip E-shaped patch antennas. The parasitic patches are co-polarized with the E-shaped patch antennas so that the current flows in the parasitic patches and the E-shaped patch antennas have the same polarity. Additional radiation from the co-polarized microstrip parasitic patches significantly improves gain flatness, gain and aperture efficiency due to offset resonance frequency.Type: ApplicationFiled: November 7, 2017Publication date: February 28, 2019Applicant: Korea Advanced Institute of Science and TechnologyInventors: Chul-Soon Park, Tae-Hwan Jang, Hong-Yi Kim
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Publication number: 20180175506Abstract: An antenna device includes a horn antenna including a waveguide and a horn connected to the waveguide, the horn having a shape widening toward an opening direction, a beamforming network including a plurality of input ports and a plurality of output ports and changing a phase of output port signals output from the output ports based on input port signals applied to the input ports, and an antenna array disposed in the horn antenna and connected to the output ports of the beamforming network.Type: ApplicationFiled: December 14, 2017Publication date: June 21, 2018Applicant: Korea Advanced Institute of Science and TechnologyInventors: Chul-Soon PARK, Tae-Hwan JANG, Hong-Yi KIM
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Patent number: 9716316Abstract: Substrate embedded horn antenna includes a dielectric, metal patterns, metal vias and a ground plate. The metal patterns are embedded by being stacked in dielectric. Metal patterns are hollow rectangle types or hollow circle types. Metal vias connect layers of metal patterns by being embedded between layers of metal patterns. Ground plate is formed in an upper side of dielectric. Metal patterns form waveguide structure by being stacked in radial shape. Waveguide structure propagates electromagnetic wave by focusing electromagnetic wave. Embedded horn antenna capable of selectively using vertical radiation and horizontal radiation may be implemented using the via and metal pattern in dielectric substrate. Embedded horn antenna may be implemented in small size with high gain. Vertical embedded horn antenna and horizontal embedded horn antenna may be implemented in a substrate. Method of manufacturing embedded horn antenna capable of selectively using vertical radiation and horizontal radiation may be provided.Type: GrantFiled: September 4, 2014Date of Patent: July 25, 2017Assignee: Korea Advanced Institute of Science and TechnologyInventors: Chul Soon Park, Hong Yi Kim
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Publication number: 20170141472Abstract: Disclosed is a millimeter wave antenna for diagonal radiation. A first metal layer and a second metal layer having a form of microstrip wire are coated on the bottom surface and at least a partial region of the top surface of a dielectric substrate, respectively. When viewed in a direction perpendicular to the top surface of the dielectric substrate, the second metal layer is covered by the first metal layer. The microstrip wire of the second metal layer may have a length of more than half of a wavelength of a RF signal. The long-wire antenna has a radiation pattern in upward diagonal direction when a signal to transmit is fed under a condition that the first metal layer is grounded. The form of the second metal layer may be a straight line, Y-shape, ?-shape, or etc. An impedance matching metal layer may be added to the second metal layer.Type: ApplicationFiled: January 26, 2016Publication date: May 18, 2017Inventors: Chul-Soon PARK, Tae-Hwan JANG, Hong-Yi KIM, Chae-Jun LEE
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Patent number: 9319256Abstract: An OOK modulation device according to the present inventive concept includes: an oscillator outputting a first frequency signal in which the frequency varies according to an input voltage; a frequency multiplier switching unit operating according to an OOK input data and switching on/off a second frequency signal that is obtained by multiplying the first frequency signal; and a switching amplifying unit amplifying and switching the second frequency signal according to the OOK input data to output an OOK modulation signal.Type: GrantFiled: September 6, 2013Date of Patent: April 19, 2016Assignee: Korea Advanced Institute of Science and TechnologyInventors: Chul Soon Park, Chul Woo Byeon, Chae Jun Lee, Chong Hyun Yoon, Joong Ho Lee, Seong Jun Cho, Hong Yi Kim, In Sang Song
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Publication number: 20150256369Abstract: An OOK modulation device according to the present inventive concept includes: an oscillator outputting a first frequency signal in which the frequency varies according to an input voltage; a frequency multiplier switching unit operating according to an OOK input data and switching on/off a second frequency signal that is obtained by multiplying the first frequency signal; and a switching amplifying unit amplifying and switching the second frequency signal according to the OOK input data to output an OOK modulation signal.Type: ApplicationFiled: September 6, 2013Publication date: September 10, 2015Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Chul Soon Park, Chul Woo Byeon, Chae Jun Lee, Chong Hyun Yoon, Joong Ho Lee, Seong Jun Cho, Hong Yi Kim, In Sang Song
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Publication number: 20150070231Abstract: Substrate embedded horn antenna includes a dielectric, metal patterns, metal vias and a ground plate. The metal patterns are embedded by being stacked in dielectric. Metal patterns are hollow rectangle types or hollow circle types. Metal vias connect layers of metal patterns by being embedded between layers of metal patterns. Ground plate is formed in an upper side of dielectric. Metal patterns form waveguide structure by being stacked in radial shape. Waveguide structure propagates electromagnetic wave by focusing electromagnetic wave. Embedded horn antenna capable of selectively using vertical radiation and horizontal radiation may be implemented using the via and metal pattern in dielectric substrate. Embedded horn antenna may be implemented in small size with high gain. Vertical embedded horn antenna and horizontal embedded horn antenna may be implemented in a substrate. Method of manufacturing embedded horn antenna capable of selectively using vertical radiation and horizontal radiation may be provided.Type: ApplicationFiled: September 4, 2014Publication date: March 12, 2015Inventors: Chul Soon PARK, Hong Yi Kim
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Patent number: 8577308Abstract: Disclosed are a beamformer and a beamforming method. The beamformer includes a plurality of dividers, each of which divides an input signal along a plurality of paths, an input switch which selects one of the dividers such that the input signal is input to the selected divider, a phase shifter which shifts phases of respective output signals from the divider, and an output switch which transmits the output signals from the phase shifter to an antenna.Type: GrantFiled: November 11, 2008Date of Patent: November 5, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Tae Choi, Jung-Han Choi, Young-Hwan Kim, Dong-Hyun Lee, Hong-Yi Kim, Ki-Chan Eun, Chul-Soon Park
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Publication number: 20090270051Abstract: Disclosed are a beamformer and a beamforming method. The beamformer includes a plurality of dividers, each of which divides an input signal along a plurality of paths, an input switch which selects one of the dividers such that the input signal is input to the selected divider, a phase shifter which shifts phases of respective output signals from the divider, and an output switch which transmits the output signals from the phase shifter to an antenna.Type: ApplicationFiled: November 11, 2008Publication date: October 29, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-tae Choi, Jung-han Choi, Young-hwan Kim, Dong-hyun Lee, Hong-yi Kim, Ki-chan Eun, Chul-soon Park