Patents by Inventor Do-hoon Kwon
Do-hoon Kwon 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: 7274335Abstract: An antenna for a slide-type wireless terminal device includes a radiator formed in a first body, a ground surface formed on a second body, a power feeder connected to the ground surface in the second body, a first connection part connected to the radiator in the first body and operative to come in contact with the power feeder when the first body is slidably moved, and a short-circuit wire operative to come in contact with the radiator and the ground surface when the first body is slidably moved.Type: GrantFiled: May 30, 2006Date of Patent: September 25, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-jin Kim, Do-hoon Kwon, Seong-soo Lee, Young-eil Kim
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Publication number: 20070139133Abstract: An apparatus for converting a transmission structure includes a conductor-backed coplanar waveguide (CBCPW) transmission line comprising metal layers formed on both sides of a board, a first signal line and a first ground line formed by removing the metal layer on one side of the board according to a pattern line, a plurality of via holes formed on the first ground line, proximate to the pattern line, and a parallel transmission line which forms a second signal line and a second ground line parallel with the second signal line, by being connected at one end with the first signal line and the first ground line in a substantially perpendicular direction with respect to the board, respectively. By the parallel transmission line which is connected with the planar transmission line in a perpendicular direction, a compact-sized wideband converter can be provided at an economical price.Type: ApplicationFiled: November 22, 2006Publication date: June 21, 2007Inventors: Do-hoon Kwon, Young-eil Kim
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Publication number: 20070126644Abstract: An antenna applied to a slide type mobile communication terminal includes a first board mounted in a first body; a second board mounted in a second body; a radiating element mounted to the second body; and a first contact formed to connect to the second board at one end and contact with the first board at the other end when the first body slides. Accordingly, an antenna with directionality can be realized for applications to short range communication systems.Type: ApplicationFiled: July 14, 2006Publication date: June 7, 2007Inventors: Yong-jin Kim, Do-hoon Kwon, Young-eil Kim, Ji-hun Koo, Ick-jae Yoon
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Publication number: 20070120750Abstract: An antenna for a slide-type wireless terminal device includes a radiator formed in a first body, a ground surface formed on a second body, a power feeder connected to the ground surface in the second body, a first connection part connected to the radiator in the first body and operative to come in contact with the power feeder when the first body is slidably moved, and a short-circuit wire operative to come in contact with the radiator and the ground surface when the first body is slidably moved.Type: ApplicationFiled: May 30, 2006Publication date: May 31, 2007Inventors: Yong-jin Kim, Do-hoon Kwon, Seong-soo Lee, Young-eil Kim
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Patent number: 7116960Abstract: An image-rejecting antenna apparatus includes an antenna unit for receiving or transmitting a wireless signal and an image-reject unit for removing an image component signal having a predetermined frequency from among signals received from the antenna unit. In an image-rejecting antenna apparatus that receives a predetermined signal and provides a processed signal to a RF circuit unit for performing a predetermined function may also include an impedance matching unit for matching an impedance of the antenna unit with an impedance of the RF circuit unit and for providing the signal from which the image component signal has been removed to the RF circuit unit. A noise component of an image frequency that is transmitted to a subsequent circuit can be minimized or removed by including an image-reject unit when designing an antenna and a matching circuit, thereby improving the image-rejecting capabilities of an entire receiver.Type: GrantFiled: May 6, 2003Date of Patent: October 3, 2006Assignee: Samsung Electronics Co., Ltd.Inventor: Do-hoon Kwon
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Apparatus for wideband transmission conversion from coplanar waveguide to parallel transmission line
Publication number: 20060192629Abstract: A transmission line conversion apparatus connecting a parallel transmission line to a coplanar waveguide (CPW) is provided. To this end, the CPW including a transmission line composed of a signal line and a ground line which is formed on one surface of a dielectric substrate, and a parallel transmission line connected to the CPW, at a predetermined angle with respect to a substrate constituting the CPW, and composed of a signal line and a ground line, are proposed. In addition, the signal line of the CPW and the signal line of the parallel transmission line are connected to each other, and the ground line of the CPW and the ground line of the parallel transmission line are connected to each other. As such, by connecting the CPW to the parallel transmission line, a return loss can be minimized.Type: ApplicationFiled: January 27, 2006Publication date: August 31, 2006Inventors: Do-hoon Kwon, Yong-jin Kim, Young-eil Kim, Young-min Moon -
Publication number: 20060181475Abstract: An ultra wide band (UWB) antenna with a unidirectional radiation pattern, including: a power feeder including a connecting point at one end and a feeding point at the other end; and a radiator including a dipole part, connected with the feeding point on the basis of the feeding point, and a loop part, whose both ends are connected with both ends of the dipole part respectively to be closed-loop-shaped. Accordingly, a UWB antenna with a unidirectional radiation pattern which mainly performs radiation perpendicular to an antenna plane can be provided.Type: ApplicationFiled: February 16, 2006Publication date: August 17, 2006Inventors: Do-hoon Kwon, Yong-jin Kim, Seong-soo Lee
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Publication number: 20060181471Abstract: An ultra wide band antenna having a 270° coverage and a system thereof. The ultra wide band antenna includes a dielectric substrate, two Vivaldi horn radiators attached to the dielectric substrate and including central axes orthogonal to each other, and a single radiator coupled to the two Vivaldi horn radiators. The ultra wide band antenna system includes: a first ultra wide band antenna including a dielectric substrate, two Vivaldi horn radiators attached to the dielectric substrate and including central axes orthogonal to each other, and a single radiator coupled to the two Vivaldi horn radiators; and a second ultra wide band antenna including a dielectric substrate, two Vivaldi horn radiators attached to the dielectric substrate and including central axes orthogonal to each other, and a single radiator coupled to the two Vivaldi horn radiators, positioned on an identical plane to the first ultra wide band antenna, and forming a line symmetric structure together with the first ultra wide band antenna.Type: ApplicationFiled: February 15, 2006Publication date: August 17, 2006Inventors: Yong-jin Kim, Do-hoon Kwon, Young-eil Kim, Seong-soo Lee
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Publication number: 20060170602Abstract: An antenna having a band rejection filter. The antenna includes: a radiator formed of a single plate, a grounding part formed of a single plate, a dielectric substrate including a surface on which the radiator is attached and another surface on which the grounding part is attached, and the band rejection filter connected to an end of the radiator. The band rejection filter includes a first capacitor connected to a signal line in parallel, a resonator including an end connected to the first capacitor in parallel and another end grounded, and a second capacitor including an end connected to the first capacitor in series and another end connected to the radiator in series. The resonator includes an inductor and a third capacitor connected to the inductor in series. As a result, the antenna may remove a frequency lower than an ultra wide band pass.Type: ApplicationFiled: January 26, 2006Publication date: August 3, 2006Inventors: Do-hoon Kwon, Young-eil Kim, Yong-jin Kim, Nikolay Chubinsky
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Publication number: 20060158383Abstract: A Ultra WideBand (UWB) substrate type dipole antenna is provided which has a stable radiation pattern. The UWB substrate type dipole antenna includes a dielectric substrate, a first radiator formed on a side of the dielectric substrate, a signal line transmitting an energy from a coaxial cable to the first radiator, and a plurality of second radiators formed at a predetermined distance from the first radiator and the signal line, and respectively having therein a plurality of slits of a predetermined configuration. Because there is no leakage of electric current to an outer part of an external conductor of the coaxial cable, even when the connection of the connector and the coaxial cable to the antenna, distortion of the radiation pattern of the antenna is prevented. As a result, the same radiation pattern and the direction of maximum radiation may be obtained before and after connection with the connector and the coaxial cable.Type: ApplicationFiled: January 3, 2006Publication date: July 20, 2006Inventors: Do-hoon Kwon, Yong-jin Kim, Seong-soo Lee
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Patent number: 7069010Abstract: Disclosed is a method for setting a wireless communication antenna for use in the home, and more particularly to a method for setting an antenna used in local area wireless communication. The present invention provides a method for determining position of a wireless communication antenna, which is capable of providing a uniform communication environment in the home, and providing a communication environment such that interference between radio waves in a region other than the home does not occur.Type: GrantFiled: April 23, 2004Date of Patent: June 27, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Young-Eil Kim, Do-Hoon Kwon, Ki-Ho Kim
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Patent number: 7050013Abstract: A planar antenna manufactured by patterning a substrate consisting of a dielectric layer, and first and second conductive layers applied, respectively, to both opposite surfaces of the dielectric layer. A first slot is formed in the first conductive layer for radiating electric waves. A second slot is formed in the first conductive layer for intercepting a particular frequency of the electric waves radiated by the first slot. A power supply portion is formed with the first conductive layer for supplying electric current to the first slot. A radiating element formed with the second conductive layer, which is excited by the electric waves radiated by the first slot, and radiates the electric waves.Type: GrantFiled: December 28, 2004Date of Patent: May 23, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-Jin Kim, Do-Hoon Kwon, Seong-Soo Lee
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Publication number: 20060055612Abstract: A planar antenna manufactured by patterning a substrate consisting of a dielectric layer, and first and second conductive layers applied, respectively, to both opposite surfaces of the dielectric layer. A first slot is formed in the first conductive layer for radiating electric waves. A second slot is formed in the first conductive layer for intercepting a particular frequency of the electric waves radiated by the first slot. A power supply portion is formed with the first conductive layer for supplying electric current to the first slot. A radiating element formed with the second conductive layer, which is excited by the electric waves radiated by the first slot, and radiates the electric waves.Type: ApplicationFiled: December 28, 2004Publication date: March 16, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-Jin Kim, Do-Hoon Kwon, Seong-Soo Lee
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Patent number: 6947009Abstract: A built-in antenna system for indoor wireless communications includes an AP antenna, all of the surfaces of which, except for an emitting surface, are installed behind wall surfaces in a wall of a building, and includes an access point (AP) (or an RF unit) connected to the AP antenna. Alternatively, the antenna system includes an antenna structure that is installed to pass through a selected wall of a building and an AP (or RF unit) connected to the antenna structure, the antenna structure having a sliding structure that can be adjusted according to the thickness of the wall. The shift of a frequency band caused by the wall may be avoided, and high-quality wireless communications is achieved regardless of the location of a wireless communication terminal in the building. Further, it is possible to increase the intensity of an electric field at the position of the terminal.Type: GrantFiled: October 15, 2003Date of Patent: September 20, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Ki-ho Kim, Young-eil Kim, Do-hoon Kwon
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Patent number: 6943747Abstract: A biconical antenna for wireless communications includes a conical upper conductive body and a conical lower conductive body having a common apex, which is used as a power feed point, wherein a space between the conical upper and lower conductive bodies is filled with a dielectric material such that a shortest distance connecting the conical upper and lower conductive bodies along a surface of the dielectric material is a curve at which an incident angle of an incident wave incident on the surface of the dielectric material through the dielectric material from the common apex is a Brewster angle over the entire surface of the dielectric material.Type: GrantFiled: September 2, 2003Date of Patent: September 13, 2005Assignee: Samsung Electronics Co., Ltd.Inventor: Do-Hoon Kwon
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Publication number: 20050168398Abstract: Disclosed herein is an antenna that can be manufactured in a smaller size and can achieve good wideband characteristics. The antenna includes a substantially semicircular antenna component installed in a monopole or dipole structure. Power is supplied to an end of the diameter of the antenna component.Type: ApplicationFiled: December 23, 2004Publication date: August 4, 2005Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Minoru Hasegawa, Takao Shimamori, Yong-Jin Kim, Do-Hoon Kwon
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Publication number: 20050156787Abstract: A miniaturized ultra-wideband microstrip antenna, includes: a dielectric substrate; a feed line disposed on the dielectric substrate, and supplying an electromagnetic energy supplied from an external power source; a main radiating element radiating the electromagnetic energy inputted by the feed line; and at least one sub-radiating element disposed in proximity to the main radiating element for multi-radiation. Also, the antenna further includes at least one connection plate electrically connecting the main radiating element to at least one of the sub-radiating elements. The miniaturized ultra-wideband microstrip antenna can also be made ultralight, and include additional sub-radiating elements besides the main radiating element, whereby multi-radiation in UWB's range can be attained.Type: ApplicationFiled: December 30, 2004Publication date: July 21, 2005Applicant: Samsung Electronics Co., Ltd.Inventors: Soung-ho Myoung, Do-Hoon Kwon, Seong-soo Lee
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Publication number: 20050146471Abstract: An ultra-wideband antenna having an isotropic radiation pattern includes a support plate, a feed line on the support plate, a radiating element connected to the feed line to transmit and receive signals, and a ground plate spaced apart from the feed line and attached to the support plate. The radiating element has at least two intersecting conductive plates.Type: ApplicationFiled: December 8, 2004Publication date: July 7, 2005Inventors: Do-hoon Kwon, Seong-soo Lee
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Patent number: 6909337Abstract: Disclosed is a noncoherent pulse position and phase shift keying (PPPSK) transmission/reception system and a transmission/reception signal processing method therefor. Transmission system has an information generation unit for generating information data; a modulation unit for deciding a phase and a timing position corresponding to generated information data; and a wavelet generation unit for generating a wavelet based on the decided phase and timing position, and the reception system has an offset unit for mixing the reception signal with a high-frequency component corresponding to a center frequency of a transmission frequency band and offsetting a high frequency of the reception signal; a demodulation unit for generating at least one reference signal based on a previous signal precedingly received with respect to the reception signal and mixing the reference signals and the reception signal; and a decision unit for deciding information data corresponding to the reception signal based on mixing results.Type: GrantFiled: September 8, 2003Date of Patent: June 21, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Wan-jin Kim, Do-hoon Kwon, Woo-kyung Lee, Yong-suk Kim
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Publication number: 20050003823Abstract: Disclosed is a method for setting a wireless communication antenna for use in the home, and more particularly to a method for setting an antenna used in local area wireless communication. The present invention provides a method for determining position of a wireless communication antenna, which is capable of providing a uniform communication environment in the home, and providing a communication environment such that interference between radio waves in a region other than the home does not occur.Type: ApplicationFiled: April 23, 2004Publication date: January 6, 2005Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young-Eil Kim, Do-Hoon Kwon, Ki-Ho Kim