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    Radio frequency filter
    21.
    发明授权
    Radio frequency filter 有权

    公开(公告)号：US11196137B2

    公开(公告)日：2021-12-07

    申请号：US16929141

    申请日：2020-07-15

    Applicant: KMW INC.

    Inventor： Sung Bae Park ,  Joung-Hoe Kim ,  Nam-Shin Park

    IPC: H01P1/208

    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.

    Radio frequency filter having a hollow box with a resonance element disposed therein and a depression with dot peen structures therein
    24.
    发明授权
    Radio frequency filter having a hollow box with a resonance element disposed therein and a depression with dot peen structures therein 有权

    公开(公告)号：US10090572B1

    公开(公告)日：2018-10-02

    申请号：US15183148

    申请日：2016-06-15

    Applicant: KMW INC.

    Inventor： Nam-Shin Park ,  Dae-Soo Jeong

    IPC: H01P1/205 ,  H01P1/207 ,  H01P7/04

    Abstract: The present invention relates to a radio frequency filter having a cavity structure, comprising: a container which has a hollow inner portion and a cavity that is cut off from the outside, and a resonance element which is placed in the hollow inner portion of the container, wherein the container has a wrinkled structure for adjusting the intervals between a longitudinal front end surface of the resonance element and the inner surfaces of the container facing the longitudinal front end surface using external pressure. Thus, the invention can be further miniaturized and is lightweight, and the design of the invention enables frequency tuning without employing a coupling structure of a tuning screw and a fastening nut, thereby obtaining a convenient and simplified structure.

    BASE STATION DEVICE IN MOBILE COMMUNICATION SYSTEM
    27.
    发明申请
    BASE STATION DEVICE IN MOBILE COMMUNICATION SYSTEM 有权

    公开(公告)号：US20170207836A1

    公开(公告)日：2017-07-20

    申请号：US15477716

    申请日：2017-04-03

    Applicant: KMW INC.

    Inventor： Young-Chan Moon ,  Nam-Shin Park ,  Chang-Seob Choi ,  In-Ho Na

    IPC: H04B7/06 ,  H04L27/233 ,  H04B1/00 ,  H04B7/024 ,  H04B7/0413 ,  H04B7/155 ,  H04B7/026

    CPC classification number: H04B7/06 ,  H04B1/0035 ,  H04B7/024 ,  H04B7/026 ,  H04B7/0413 ,  H04B7/155 ,  H04L27/2334

    Abstract: A base station apparatus of mobile communication system is provided, including an antenna system including first antenna for transceiving signals for a first path among MIMO paths, and a second antenna for transceiving signals for a second path among the MIMO paths, a first duplexer including transmission filter for processing the transmitted signal of first path and reception filter for processing the received signal of second path, a second duplexer including reception filter for processing the received signal of first path and transmission filter for processing the transmitted signal of second path, and a path change unit for providing the transmitted signal provided from the first duplexer to the first antenna and the received signal provided from the first antenna to the second duplexer and to provide the transmitted signal from the second duplexer to the second antenna and the received signal from the second antenna to the first duplexer.

    RADIO FREQUENCY FILTER HAVING CAVITY STRUCTURE
    29.
    发明申请
    RADIO FREQUENCY FILTER HAVING CAVITY STRUCTURE 有权
    具有密度结构的无线频率滤波器

    公开(公告)号：US20140327499A1

    公开(公告)日：2014-11-06

    申请号：US14333254

    申请日：2014-07-16

    Applicant: KMW INC.

    Inventor： Nam-Shin Park ,  Dae-Soo Jeong

    IPC: H01P1/207

    CPC classification number: H01P1/2053 ,  H01P1/205 ,  H01P1/207 ,  H01P1/208 ,  H01P7/04

    Abstract: The present invention relates to a radio frequency filter having a cavity structure, comprising: a container which has a hollow inner portion and a cavity that is cut off from the outside, and a resonance element which is placed in the hollow inner portion of the container, wherein the container has a wrinkled structure for adjusting the intervals between a longitudinal front end surface of the resonance element and the inner surfaces of the container facing the longitudinal front end surface using external pressure. Thus, the invention can be further miniaturized and is lightweight, and the design of the invention enables frequency tuning without employing a coupling structure of a tuning screw and a fastening nut, thereby obtaining a convenient and simplified structure.

    Abstract translation: 本发明涉及一种具有空腔结构的射频滤波器，包括：具有中空内部部分和从外部切断的空腔的容器，以及放置在容器的中空内部的共振元件 其特征在于，所述容器具有褶皱结构，用于利用外部压力调节所述谐振元件的纵向前端表面和所述容器的面向所述纵向前端表面的内表面之间的间隔。 因此，本发明可以进一步小型化并且重量轻，并且本发明的设计可以在不使用调谐螺钉和紧固螺母的联接结构的情况下实现频率调谐，从而获得方便和简化的结构。

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