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公开(公告)号：US20160204493A1
公开(公告)日：2016-07-14
申请号：US15072898
申请日：2016-03-17
申请人： KMW Inc.
发明人： Nam-Shin Park , Joung-Hoe Kim
摘要： 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.
摘要翻译： 提供具有腔结构的射频滤波器。 射频滤波器包括具有内部中空部分的壳体，该内部中空部分具有空腔并从壳体的一侧开口，密封壳体的开放侧的盖和设置在中空壳体内部的谐振元件。 对应于谐振元件的盖的一部分处形成有通孔，并且覆盖通孔的调谐元件被安装用于频率调谐。 调谐元件由具有与盖的材料的热膨胀系数不同的热膨胀系数的材料形成。
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公开(公告)号：US10777869B2
公开(公告)日：2020-09-15
申请号：US15990856
申请日：2018-05-29
申请人： KMW INC.
发明人： Joung-Hoe Kim , Sung-Ho Jang
摘要： 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.
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公开(公告)号：US09985330B2
公开(公告)日：2018-05-29
申请号：US15072898
申请日：2016-03-17
申请人： KMW Inc.
发明人： Nam-Shin Park , Joung-Hoe Kim
摘要： 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.
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公开(公告)号：US11108121B2
公开(公告)日：2021-08-31
申请号：US16666575
申请日：2019-10-29
申请人： KMW INC.
发明人： Joung-Hoe Kim , Sung-Ho Jang
摘要： 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.
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公开(公告)号：US20200067162A1
公开(公告)日：2020-02-27
申请号：US16666575
申请日：2019-10-29
申请人： KMW INC.
发明人： Joung-Hoe Kim , Sung-Ho Jang
摘要： 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.
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公开(公告)号：US10116027B2
公开(公告)日：2018-10-30
申请号：US15175912
申请日：2016-06-07
申请人： KMW INC.
发明人： 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
摘要： 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.
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公开(公告)号：US11196137B2
公开(公告)日：2021-12-07
申请号：US16929141
申请日：2020-07-15
申请人： KMW INC.
发明人： Sung Bae Park , Joung-Hoe Kim , Nam-Shin Park
IPC分类号： H01P1/208
摘要： 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.
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公开(公告)号：US10608308B2
公开(公告)日：2020-03-31
申请号：US16142636
申请日：2018-09-26
申请人： KMW INC.
发明人： 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
摘要： 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.
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公开(公告)号：US20190027798A1
公开(公告)日：2019-01-24
申请号：US16142636
申请日：2018-09-26
申请人： KMW INC.
发明人： 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
摘要： 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.
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公开(公告)号：US20170098878A1
公开(公告)日：2017-04-06
申请号：US15175912
申请日：2016-06-07
申请人： KMW INC.
发明人： 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
IPC分类号： H01P1/208
CPC分类号： H01P1/208 , H01J3/00 , H01P1/2053
摘要： 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.
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