Patents by Inventor Joung-Hoe Kim

Joung-Hoe 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).

  • Publication number: 20200365960
    Abstract: The present invention relates to a cavity filter and, particularly, to a cavity filter comprising: a resonance element including a coupling block; a first case including the resonance element therein; a second case arranged so as to cover one surface of the first case; a terminal unit penetrating the first case such that one end thereof is protrudingly provided so as to be connected to an electrode pad of an external member provided on the outside of the first case and the other end thereof is electrically connected to the coupling block of the resonance element provided to be close to the second case, wherein the terminal unit is electrically insulated from the first case; and an assembly unit provided on either one side or both sides in the lengthwise direction of the case, and having a terminal insertion hole in which the terminal unit is insertedly provided, wherein the assembly unit is formed to protrude to the outside from a lower surface of the first case.
    Type: Application
    Filed: July 31, 2020
    Publication date: November 19, 2020
    Applicant: KMW INC.
    Inventors: Duk Yong Kim, Sung Ho Jang, Joung Hoe Kim
  • Publication number: 20200350651
    Abstract: Disclosed herein is a radio frequency filter having a notch structure. The radio frequency filter includes a hollow housing having a plurality of partition walls defining a plurality of cavities and an open surface formed on one side, a cover configured to shield the open surface of the housing, a plurality of resonance elements positioned in the cavities of the housing, a coupling substrate arranged to cross a partition wall between at least two of the plurality of resonance elements, and a tuning screw inserted into the housing through the cover. The partition wall crossed by the coupling substrate includes a support window formed to have a first depth from the open surface, the coupling substrate being arranged through the support window, and a tuning window formed to have a second depth greater than the first depth from the open surface, the tuning screw being inserted into the tuning window.
    Type: Application
    Filed: July 15, 2020
    Publication date: November 5, 2020
    Applicant: KMW INC.
    Inventors: Sung Bae Park, Joung-hoe Kim, Nam-shin Park
  • Patent number: 10777869
    Abstract: The present invention relates to a cavity type wireless frequency filter having a cross-coupling notch structure, the filter comprising a notch substrate provided for cross-coupling between at least two resonance elements among a plurality of resonance elements, wherein the notch substrate comprises: a main substrate, which is made of a non-conductive material and has the first and second coupling structures mechanically coupled with at least two resonance elements, respectively; and a conductive line which is implemented by a conductive pattern formed on the main substrate and transfers a signal of a first resonance element to a second resonance element by using a non-contact coupling method.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: September 15, 2020
    Assignee: KMW INC.
    Inventors: Joung-Hoe Kim, Sung-Ho Jang
  • Publication number: 20200287260
    Abstract: The present disclosure provides a cavity filter assembly installed with an RF filter having an empty area formed between the RF filter and a cavity filter body serving as a ground to reduce the parasitic capacitance by forming the cavity filter body with a first pocket portion configured to install the RF filter and a second pocket portion within the first pocket portion in a position to overlap a transmission line, thereby reducing the insertion loss of the RF filter, which when serving as a low-pass filter, can position the harmonics in the stopband further away from the cutoff frequency and thus effect improved frequency characteristics of the low-pass filter through improvements of, for example, the frequency characteristics in the stopband.
    Type: Application
    Filed: May 21, 2020
    Publication date: September 10, 2020
    Applicant: KMW INC.
    Inventors: Joung-hoe Kim, Sung Bae Park
  • Publication number: 20200244018
    Abstract: The present disclosure relates to a coaxial connector, and particularly, a coaxial connector including a fixing module which is connected to a first PCB, and a contact module which is coupled movably to the fixing module, and provided to be contactable to a second PCB facing the first panel, in which the contact module includes a contact body which is made of a conductive material, and has a hollow formed therein, a contact pin which is made of a conductive material, and disposed to penetrate the hollow of the contact body, and a contact insulator which is disposed in the hollow of the contact body to insulate the contact pin and the contact body by partitioning the contact pin and the contact body, and the contact module is configured so that the contact body, the contact pin, and the contact insulator are integrally formed to be assembled to the fixing module by a singular process, thereby providing the advantages which may reduce the cost of a product, and improve the quality of the product by improving a
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Applicant: KMW INC.
    Inventors: Nam Shin Park, Joung Hoe Kim, Jin Hoon Lim, Min Hee Lee, Ho Jin Hwang
  • Patent number: 10608308
    Abstract: An automatic RF filter tuning system and a method for manufacturing a filter using the same are disclosed. An RF filter tuning system for tuning an RF filter that includes a plurality of cavities having resonance elements and a cover having tuning areas that are positioned correspondingly to the resonance elements, includes a measuring unit configured to measure resonance characteristics of the cavity of the RF filter, a control unit configured to calculate a tuning value of the RF filter based on the resonance characteristics, and a tuning unit configured to tune the RF filter based on the tuning value calculated by the control unit. The tuning unit includes a striking unit configured to strike the tuning area of the cover of the RF filter, thereby adjusting the resonance value and tuning the RF filter.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 31, 2020
    Assignee: KMW INC.
    Inventors: Nam-Shin Park, Joung-Hoe Kim, Don-Yong Lee, Kang-Hui Suh, Jong-Youn Jung, Sang-Hwan Cho, Dong-Cheon Kim, Sang-Yoong Kim, Yong-Jin Park, Oh-Kwon Kim
  • Publication number: 20200067162
    Abstract: A cavity-type radio frequency filter is disclosed. the radio frequency filter having a cavity structure including an enclosure, a resonant element, a cover, a frequency tuning screw, and a resilient fixing member. The enclosure has a hollow inside and an open surface on one side to have a cavity. The resonant element is positioned in the hollow of the enclosure. The cover has a screw hole having a preset diameter at a position corresponding to the resonant element, and is configured to seal the open surface of the enclosure. The frequency tuning screw is configured to be screwed into the screw hole of the cover, and it has an upper end formed at least partially with a latching abutment that protrudes outwardly.
    Type: Application
    Filed: October 29, 2019
    Publication date: February 27, 2020
    Applicant: KMW INC.
    Inventors: Joung-Hoe Kim, Sung-Ho Jang
  • Publication number: 20190348734
    Abstract: The present invention provides a cavity filter having a slim and compact structure in which a push-pin type RF connector, which is formed such that a terminal is exposed to both sides or one side in a height direction, is embedded so as to reduce a size of an antenna system, quickly perform verification for an individual cavity filter while having high reproducibility, and enable the antenna system to be readily mounted.
    Type: Application
    Filed: July 28, 2019
    Publication date: November 14, 2019
    Applicant: KMW INC.
    Inventors: Duk Yong Kim, Sung Ho Jang, Joung-hoe Kim, Dae Eil Jo, Nam Shin Park
  • Publication number: 20190252750
    Abstract: The present disclosure relates to a radio frequency filter having a cavity structure, and including a housing having internally a hollow space and an open side to provide at least one cavity, at least one resonance element located in the hollow space of the housing, a cover configured to have at least one groove which is internally threaded, recessed at a predetermined diameter and depth at a position corresponding to the resonance element, and has a bottom portion that is thinner than other portions, and to close the open side of the housing, and at least one frequency tuning screw configured to threadedly mate with the groove of the cover. When the frequency tuning screw threadedly mates with the groove, a bottom surface of the groove is depressed by the frequency tuning screw toward the resonant element.
    Type: Application
    Filed: April 24, 2019
    Publication date: August 15, 2019
    Inventor: Joung-hoe KIM
  • Publication number: 20190027798
    Abstract: An automatic RF filter tuning system and a method for manufacturing a filter using the same are disclosed. An RF filter tuning system for tuning an RF filter that includes a plurality of cavities having resonance elements and a cover having tuning areas that are positioned correspondingly to the resonance elements, includes a measuring unit configured to measure resonance characteristics of the cavity of the RF filter, a control unit configured to calculate a tuning value of the RF filter based on the resonance characteristics, and a tuning unit configured to tune the RF filter based on the tuning value calculated by the control unit. The tuning unit includes a striking unit configured to strike the tuning area of the cover of the RF filter, thereby adjusting the resonance value and tuning the RF filter.
    Type: Application
    Filed: September 26, 2018
    Publication date: January 24, 2019
    Inventors: Nam-Shin Park, Joung-Hoe Kim, Don-Yong Lee, Kang-Hui Suh, Jong-Youn Jung, Sang-Hwan Cho, Dong-Cheon Kim, Sang-Yoong Kim, Yong-Jin Park, Oh-Kwon Kim
  • Patent number: 10116027
    Abstract: An automatic RF filter tuning system and a method for manufacturing a filter using the same are disclosed. An RF filter tuning system for tuning an RF filter that includes a plurality of cavities having resonance elements and a cover having tuning areas that are positioned correspondingly to the resonance elements, includes a measuring unit configured to measure resonance characteristics of the cavity of the RF filter, a control unit configured to calculate a tuning value of the RF filter based on the resonance characteristics, and a tuning unit configured to tune the RF filter based on the tuning value calculated by the control unit. The tuning unit includes a striking unit configured to strike the tuning area of the cover of the RF filter, thereby adjusting the resonance value and tuning the RF filter.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: October 30, 2018
    Assignee: KMW INC.
    Inventors: Nam-Shin Park, Joung-Hoe Kim, Don-Yong Lee, Kang-Hui Suh, Jong-Youn Jung, Sang-Hwan Cho, Dong-Cheon Kim, Sang-Yoong Kim, Yong-Jin Park, Oh-Kwon Kim
  • Publication number: 20180277918
    Abstract: The present invention relates to a cavity type wireless frequency filter having a cross-coupling notch structure, the filter comprising a notch substrate provided for cross-coupling between at least two resonance elements among a plurality of resonance elements, wherein the notch substrate comprises: a main substrate, which is made of a non-conductive material and has the first and second coupling structures mechanically coupled with at least two resonance elements, respectively; and a conductive line which is implemented by a conductive pattern formed on the main substrate and transfers a signal of a first resonance element to a second resonance element by using a non-contact coupling method.
    Type: Application
    Filed: May 29, 2018
    Publication date: September 27, 2018
    Inventors: Joung-Hoe KIM, Sung-Ho JANG
  • Patent number: 9985330
    Abstract: A radio frequency filter with a cavity structure is provided. The radio frequency filter includes a housing having an inner hollow portion to have a cavity and open from one side of the housing, a cover sealing the open side of the housing, and a resonant element disposed inside the hollow housing. A through hole is formed at a part of the cover, corresponding to the resonant element, and a tuning element is installed covering the through hole, for frequency tuning. The tuning element is formed of a material having a different thermal expansion coefficient from a thermal expansion coefficient of a material of the cover.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: May 29, 2018
    Assignee: KMW INC.
    Inventors: Nam-Shin Park, Joung-Hoe Kim
  • Publication number: 20170098878
    Abstract: An automatic RF filter tuning system and a method for manufacturing a filter using the same are disclosed. An RF filter tuning system for tuning an RF filter that includes a plurality of cavities having resonance elements and a cover having tuning areas that are positioned correspondingly to the resonance elements, includes a measuring unit configured to measure resonance characteristics of the cavity of the RF filter, a control unit configured to calculate a tuning value of the RF filter based on the resonance characteristics, and a tuning unit configured to tune the RF filter based on the tuning value calculated by the control unit. The tuning unit includes a striking unit configured to strike the tuning area of the cover of the RF filter, thereby adjusting the resonance value and tuning the RF filter.
    Type: Application
    Filed: June 7, 2016
    Publication date: April 6, 2017
    Inventors: Nam-Shin Park, Joung-Hoe Kim, Don-Yong Lee, Kang-Hui Suh, Jong-Youn Jung, Sang-Hwan Cho, Dong-Cheon Kim, Sang-Yoong Kim, Yong-Jin Park, Oh-Kwon Kim
  • Publication number: 20160204493
    Abstract: A radio frequency filter with a cavity structure is provided. The radio frequency filter includes a housing having an inner hollow portion to have a cavity and open from one side of the housing, a cover sealing the open side of the housing, and a resonant element disposed inside the hollow housing. A through hole is formed at a part of the cover, corresponding to the resonant element, and a tuning element is installed covering the through hole, for frequency tuning. The tuning element is formed of a material having a different thermal expansion coefficient from a thermal expansion coefficient of a material of the cover.
    Type: Application
    Filed: March 17, 2016
    Publication date: July 14, 2016
    Inventors: Nam-Shin Park, Joung-Hoe Kim