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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：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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