Patents by Inventor Byung-je Lee
Byung-je Lee 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: 9337547Abstract: An internal antenna having a wideband characteristic includes a printed circuit board, a first antenna unit fed with electricity from a feeding unit of the printed circuit board, and a second antenna unit spaced apart from the first antenna unit by a predetermined distance and indirectly fed with electricity by means of coupling to the first antenna unit, wherein the second antenna unit is indirectly fed with electricity with a phase difference from the first antenna unit due to an electric distance from a feeding point of the first antenna unit.Type: GrantFiled: July 26, 2013Date of Patent: May 10, 2016Assignee: LS MTRON LTD.Inventors: Tae-Hyung Kim, Ki-Hyun Kong, Suk-Ki Koo, Byung-Je Lee, Hyun-Ho Wi, Byeong-Kwan Kim
-
Publication number: 20140028519Abstract: An internal antenna having a wideband characteristic includes a printed circuit board, a first antenna unit fed with electricity from a feeding unit of the printed circuit board, and a second antenna unit spaced apart from the first antenna unit by a predetermined distance and indirectly fed with electricity by means of coupling to the first antenna unit, wherein the second antenna unit is indirectly fed with electricity with a phase difference from the first antenna unit due to an electric distance from a feeding point of the first antenna unit.Type: ApplicationFiled: July 26, 2013Publication date: January 30, 2014Inventors: Tae-Hyung Kim, Ki-Hyun Kong, Suk-Ki Koo, Byung-Je Lee, Hyun-Ho Wi, Byeong-Kwan Kim
-
Publication number: 20130050027Abstract: Disclosed is a MIMO/diversity antenna high isolation including a printed circuit board, a plurality of antenna elements, a current conversion element connected with a common ground of the printed circuit board apart from the antenna elements at a predetermined distance, wherein the current conversion element is coupled with the antenna elements to induce an electric current from the antenna elements into the antenna elements again via the common ground.Type: ApplicationFiled: June 22, 2012Publication date: February 28, 2013Applicant: LS Mtron Ltd.Inventors: Tae-Hyung KIM, Ki-Hyun KONG, Je-Min LEE, Byung-Je LEE, Byeong-Kwan KIM, Hyun-Ho WI, Bong-Gyu SHIN
-
Publication number: 20110220727Abstract: The present invention relates to a radio frequency identification (RFID) tag antenna and an RFID tag, in which a connection part where a radiator dipole and a T-junction are connected has a branch structure, so that an electric current can be induced in the T-junction and the radiator dipole by the branch structure, and the amount of the electric current induced in the radiator dipole can be adjusted to thereby control impedance of the RFID tag antenna in detail. The RFID tag antenna includes: a substrate; a radiator dipole symmetrically printed on the substrate in a form of meanders; and a T-junction formed between the symmetrical radiator dipoles, formed integrally with each end part of the symmetrical radiator dipoles and performing impedance matching between the radiator dipole and an RFID tag chip, wherein a connection part where the symmetrical radiator dipole and the T-junction are connected has a branch structure.Type: ApplicationFiled: November 19, 2008Publication date: September 15, 2011Applicant: Techno Semichen Co. Ltd.Inventors: Byung Je Lee, Byung Gil Yu, Nak Chung Choi, Chang Hwan Oh, Eun Duck Lee, Jong Hoon Park, Sun Byuong Park, Kyung Hun Kim
-
Patent number: 7782257Abstract: A multi-band internal antenna includes a top patch defining a first loop that defines a space therein and a first opening; a stub provided within the space defined by the first loop; a bottom patch provided below the top patch and having a first section and a second section connected to a feeder part and a shorting part, respectively, the bottom patch defining a second loop and second and third openings, the second and third openings being provided on opposing sides of the second loop so that the first and second sections of the bottom patch are separated from each other; and a first connecting part and a second connecting part connecting a first portion and a second portion of the top patch, respectively, to the first section and the second section of the bottom patch to transmit a signal from the bottom patch to the top patch.Type: GrantFiled: July 4, 2005Date of Patent: August 24, 2010Assignee: Electronics and Telecommunications Research InstituteInventors: Byung-Chan Kim, Jae-Ick Choi, Byung-Je Lee, Byung-Woon Jung, Han-Phil Rhyu, Byung-Gil Yu
-
Publication number: 20090135077Abstract: Provided is a multi-band internal antenna of a symmetry structure having stub, in which a size of the internal antenna can be reduced by stacking loop antennas, a broadband characteristic can be obtained in a high frequency band by connecting the stub to a top patch of the antenna, and a reduced SAR and an omni-directional radiation pattern can be obtained by configuring an antenna patch in a symmetry structure.Type: ApplicationFiled: July 4, 2005Publication date: May 28, 2009Applicant: Electronics and Telecommunications Research InstituteInventors: Byung-Chan Kim, Jae-Ick Choi, Byung-Je Lee, Byung-Woon Jung, Han-Phil Rhyu, Byung-Gil Yu
-
Patent number: 7505008Abstract: Provided is an antenna for a Radio Frequency Identification (RFID) reader using an electrical loop. It includes an upper metal plate which functions as a radiator; a lower metal plate which is disposed apart from the upper metal plate by a predetermined distance and functions as a radiator; a ground plate disposed apart from the lower metal plate by a predetermined distance; and a feeding probe disposed at the center of the upper and lower metal plates. The antenna can perform radiation parallel to the earth's surface including other directions. Therefore, it is suitable for an RFID reader which recognizes an RFID tag attached in parallel to the earth's surface. The electrical loop antenna can control impedance matching, resonance frequency, antenna gain, and radiation pattern according to the distance between metal plates, size of the metal plates, thickness of a feeding probe, and how the metal plates are arranged.Type: GrantFiled: September 25, 2006Date of Patent: March 17, 2009Assignee: Electronics and Telecommunications Research InstituteInventors: Chan-Soo Shin, Won-Kyu Choi, Hae-Won Son, Gil-Young Choi, Cheol-Sig Pyo, Jong-Suk Chae, Han-Phil Rhyu, Sung-Jun Heo, Byung-Je Lee
-
Patent number: 7471168Abstract: The present invention discloses to an SMA connector, a preferable embodiment of which comprises a body acting as ground, a central conductor existing in the inner part of the ground, an insulator with a predetermined dielectric constant existing between the body and the central conductor, a first step transition part formed in the body, a taper formed in the central conductor in order to improve RF characteristics and to fix the central conductor and the insulator, and a second step transition part formed in the central conductor corresponding to the first step transition part to improve RF characteristics.Type: GrantFiled: July 14, 2003Date of Patent: December 30, 2008Assignees: Mission Technology Co., Ltd., Kwangwoon University Industry-Academic Collaboration FoundationInventors: Jong-Chul Lee, Jae-Sun Lee, Ki-Byoung Kim, Tae-Soon Yun, Sang-Gun Lee, Nam-Young Kim, Jong-Heon Kim, Byung-Je Lee, Bub-Sang Yun, Kuk-Hwan Ra, Youn-Joo Lee, Sun-Won Hong
-
Publication number: 20070080879Abstract: Provided is an antenna for a Radio Frequency Identification (RFID) reader using an electrical loop. It includes an upper metal plate which functions as a radiator; a lower metal plate which is disposed apart from the upper metal plate by a predetermined distance and functions as a radiator; a ground plate disposed apart from the lower metal plate by a predetermined distance; and a feeding probe disposed at the center of the upper and lower metal plates. The antenna can perform radiation parallel to the earth's surface including other directions. Therefore, it is suitable for an RFID reader which recognizes an RFID tag attached in parallel to the earth's surface. The electrical loop antenna can control impedance matching, resonance frequency, antenna gain, and radiation pattern according to the distance between metal plates, size of the metal plates, thickness of a feeding probe, and how the metal plates are arranged.Type: ApplicationFiled: September 25, 2006Publication date: April 12, 2007Inventors: Chan-Soo Shin, Won-Kyu Choi, Hae-Won Son, Gil-Young Choi, Cheol-Sig Pyo, Jong-Suk Chae, Han-Phil Rhyu, Sung-Jun Heo, Byung-Je Lee
-
Publication number: 20060128215Abstract: The present invention discloses to an SMA connector, a preferable embodiment of which comprises a body acting as ground, a central conductor existing in the inner part of the ground, an insulator with a predetermined dielectric constant existing between the body and the central conductor, a first step transition part formed in the body, a taper formed in the central conductor in order to improve RF characteristics and to fix the central conductor and the insulator, and a second step transition part formed in the central conductor corresponding to the first step transition part to improve RF characteristics.Type: ApplicationFiled: July 14, 2003Publication date: June 15, 2006Applicants: Mission Telecom Corporation, Kwangwoon FoundationInventors: Jong-Chul Lee, Jae-Sun Lee, Ki-Byoung Kim, Tae-Soon Yun, Sang-Gun Lee, Nam-Young Kim, Jong-Heon Kim, Byung-Je Lee, Bub-Sang Yun, Kuk-Hwan Ra, Youn-Joo Lee, Sun-Won Hong
-
Patent number: 6956528Abstract: This invention relates to a microstrip array antenna, especially a broad-band dual-polarized microstrip array antenna having parallel feeding structure whose consist of two parts power supplying layers each of which generates its own polarization respectively. And the broad-band dual-polarized microstrip array antenna according to the present invention arranges transmission paths for two separate linear polarization on a different layer each other in order to minimize an interference effect and a proximity feeding method and an aperture coupled method are used in order to get two separate polarization.Type: GrantFiled: June 9, 2001Date of Patent: October 18, 2005Assignees: Mission Telecom, Inc., Pawanet, Inc., Kwangwoon FoundationInventors: Byung-je Lee, Gi-cho Kang, Hak-yong Lee, Nam-young Kim, Jong-heon Kim, Guen-ho Lee, Keuk-hwan Ra
-
Publication number: 20040119645Abstract: This invention relates to a microstrip array antenna, especially a broad-band dual-polarized microstrip array antenna having parallel feeding structure whose consist of two parts power supplying layers each of which generates its own polarization respectively. And the broad-band dual-polarized microstrip array antenna according to the present invention arranges transmission paths for two separate linear polarization on a different layer each other in order to minimize an interference effect and a proximity feeding method and an aperture coupled method are used in order to get two separate polarization.Type: ApplicationFiled: October 30, 2003Publication date: June 24, 2004Inventors: Byung-je Lee, Gi-cho Kang, Hak-yong Lee, Nam-young Kim, Jong-heon Kim, Guen-ho Lee, Keuk-hwan Ra