Patents by Inventor Up NAMKOONG
Up NAMKOONG 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: 9448270Abstract: A coupling clamp-type pulse injection apparatus, which can couple a high-voltage wideband pulse having a peak voltage of several tens of kV and having a rising time of several hundreds of ps or less to a cable without causing dielectric breakdown and a 50 ohm impedance mismatch, is provided. The pulse injection apparatus includes an input connector, an output connector, and a main body including an inner plate connected at a first end thereof to the input connector and at a second end thereof to the output connector, and a coupling plate connected to the inner plate and configured to fix a cable to the inner plate and to couple a high-power electromagnetic pulse input through the input connector to the cable.Type: GrantFiled: January 22, 2014Date of Patent: September 20, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Up Namkoong, Seung-Kab Ryu, Uijung Kim, Kwang-Uk Chu
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Patent number: 9190722Abstract: An antenna line protection device includes a pair of coaxial connectors and a streamer discharge module. The pair of coaxial connectors are disposed on both side ends of the antenna line protection device. The streamer discharge module is coupled between the coaxial connectors so that, when a pulse signal is input via the coaxial connectors, the streamer discharge module induces an electric field and thus establishes a discharge current channel, thereby suppressing an excessive input pulse.Type: GrantFiled: July 1, 2014Date of Patent: November 17, 2015Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Seung-Kab Ryu, Kyung-Hoon Lee, Kwang-Uk Chu, Uijung Kim, Up Namkoong
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Patent number: 8994471Abstract: A stacked diode limiter, which can suppress and eliminate a malicious high-power electromagnetic pulse signal and an Intentional Electromagnetic Interference (IEMI) signal that are input to the antenna line of a wireless system and that include a communication service frequency component having a power of several kW or more, includes a stacked diode unit including one or more diode stack parts formed on a center electrode of a coaxial line formed between an input connector and an output connector, each diode stack part being configured such that a plurality of diodes are arranged in series and stacked on top of one another, and an impedance matching unit for configuring dielectrics between the connectors and the coaxial line as heterogeneous dielectrics and matching impedances between the connectors and the coaxial line.Type: GrantFiled: February 27, 2014Date of Patent: March 31, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Seung-Kab Ryu, Kyung-Hoon Lee, Kwang-Uk Chu, Uijung Kim, Up Namkoong
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Publication number: 20150011121Abstract: An antenna line protection device includes a pair of coaxial connectors and a streamer discharge module. The pair of coaxial connectors are disposed on both side ends of the antenna line protection device. The streamer discharge module is coupled between the coaxial connectors so that, when a pulse signal is input via the coaxial connectors, the streamer discharge module induces an electric field and thus establishes a discharge current channel, thereby suppressing an excessive input pulse.Type: ApplicationFiled: July 1, 2014Publication date: January 8, 2015Inventors: Seung-Kab RYU, Kyung-Hoon LEE, Kwang-Uk CHU, Uijung KIM, Up NAMKOONG
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Publication number: 20150004847Abstract: A coupling clamp-type pulse injection apparatus, which can couple a high-voltage wideband pulse having a peak voltage of several tens of kV and having a rising time of several hundreds of ps or less to a cable without causing dielectric breakdown and a 50 ohm impedance mismatch, is provided. The pulse injection apparatus includes an input connector, an output connector, and a main body including an inner plate connected at a first end thereof to the input connector and at a second end thereof to the output connector, and a coupling plate connected to the inner plate and configured to fix a cable to the inner plate and to couple a high-power electromagnetic pulse input through the input connector to the cable.Type: ApplicationFiled: January 22, 2014Publication date: January 1, 2015Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTTEInventors: Up NAMKOONG, Seung-Kab RYU, Uijung KIM, Kwang-Uk CHU
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Publication number: 20150002238Abstract: A stacked diode limiter, which can suppress and eliminate a malicious high-power electromagnetic pulse signal and an Intentional Electromagnetic Interference (IEMI) signal that are input to the antenna line of a wireless system and that include a communication service frequency component having a power of several kW or more, includes a stacked diode unit including one or more diode stack parts formed on a center electrode of a coaxial line formed between an input connector and an output connector, each diode stack part being configured such that a plurality of diodes are arranged in series and stacked on top of one another, and an impedance matching unit for configuring dielectrics between the connectors and the coaxial line as heterogeneous dielectrics and matching impedances between the connectors and the coaxial line.Type: ApplicationFiled: February 27, 2014Publication date: January 1, 2015Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Seung-Kab RYU, Kyung-Hoon LEE, Kwang-Uk CHU, Uijung KIM, Up NAMKOONG
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Patent number: 8681467Abstract: A surge protection apparatus is provided. The surge protection apparatus includes a non-linear element unit, a signal generation unit, and a switching element unit. The non-linear element unit enables an electrical surge to pass therethrough by rapidly decreasing resistance of the non-linear element unit when the difference in voltage between two ends of the non-linear element unit is equal to or greater than a predetermined value. The signal generation unit generates a control signal in response to current which passes through the non-linear element unit. The switching element unit switches the status thereof in response to the control signal.Type: GrantFiled: December 15, 2011Date of Patent: March 25, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Kwang-Uk Chu, Up Namkoong, Kyung-Hoon Lee
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Publication number: 20120268855Abstract: A surge protection apparatus is provided. The surge protection apparatus includes a non-linear element unit, a signal generation unit, and a switching element unit. The non-linear element unit enables an electrical surge to pass therethrough by rapidly decreasing resistance of the non-linear element unit when the difference in voltage between two ends of the non-linear element unit is equal to or greater than a predetermined value. The signal generation unit generates a control signal in response to current which passes through the non-linear element unit. The switching element unit switches the status thereof in response to the control signal.Type: ApplicationFiled: December 15, 2011Publication date: October 25, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kwang-Uk CHU, Up NAMKOONG, Kyung-Hoon LEE