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    BAND-STOP FILTER, TRANSMISSION LINE FOR BAND-STOP FILTER AND MULTIPLEXER
    2.
    发明申请
    BAND-STOP FILTER, TRANSMISSION LINE FOR BAND-STOP FILTER AND MULTIPLEXER 审中-公开

    公开(公告)号：US20200295423A1

    公开(公告)日：2020-09-17

    申请号：US16804024

    申请日：2020-02-28

    申请人： CommScope Italy, S.r.l.

    发明人： Xianxiang Li ,  Yangzhun Lv ,  Qing Mi ,  Qiyun Gu ,  Giuseppe Resnati

    IPC分类号： H01P1/207 ,  H01P7/04 ,  H01P3/08

    摘要： A band-stop filter comprises: a housing having a top wall, a bottom wall and at least one side wall, the housing defining an internal cavity; a signal input port and a signal output port that are respectively disposed on one of the at least one side wall; a resonating element that is disposed in the internal cavity and includes a top, a bottom, and a side; and a transmission line that is disposed in the internal cavity and coupled between the signal input port and the signal output port, the transmission line comprising a coupling section that is coupled to the resonating element, wherein the coupling section is configured to surround more than half of the side of the resonating element and not directly contact the housing and the resonating element.

    Filter assemblies, tuning elements and method of tuning a filter
    3.
    发明授权
    Filter assemblies, tuning elements and method of tuning a filter 有权

    公开(公告)号：US10530027B2

    公开(公告)日：2020-01-07

    申请号：US16039366

    申请日：2018-07-19

    申请人： CommScope Italy S.r.l.

    发明人： Roman Tkadlec ,  YongJie Xu ,  Richard Brown ,  Giuseppe Resnati ,  Omar Parimbelli ,  Sammit Patel

    IPC分类号： H01P1/207 ,  H01P1/213 ,  H01P7/08 ,  H01P1/203 ,  H01P7/06

    摘要： The present invention provides filter assemblies, tuning elements and a method of tuning a filter. A filter assembly includes a housing having a top cover, a bottom cover and at least one sidewall, the top cover, the bottom cover and the at least one sidewall defining an internal cavity, the housing configured to receive first through third radio frequency (“RF”) transmission lines; a top metal sheet mounted within the internal cavity that has a plurality of openings that form a first hole pattern; and a bottom metal sheet mounted within the internal cavity that has a plurality of openings that form a second hole pattern. The top and bottom metal sheets are vertically spaced-apart from each other in a vertically stacked relationship within the internal cavity. The top metal sheet and the bottom metal sheet each include at least one resonator.

    In-line filter having mutually compensating inductive and capacitive coupling
    7.
    发明授权
    In-line filter having mutually compensating inductive and capacitive coupling 有权

    公开(公告)号：US10658722B2

    公开(公告)日：2020-05-19

    申请号：US16257124

    申请日：2019-01-25

    申请人： CommScope Italy S.r.l.

    发明人： Stefano Tamiazzo ,  Giuseppe Resnati

    IPC分类号： H01P1/205

    摘要： An in-line resonator filter has a linear array of three or more conductors. A first pair of adjacent conductors has inductive main coupling and oppositely signed capacitive main coupling, while a second pair of non-adjacent conductors has inductive cross-coupling. The first and second pairs have one conductor in common. Between the second pair of non-adjacent conductors, there is no direct ohmic connection that provides the corresponding inductive cross-coupling. The oppositely signed capacitive main coupling compensates for at least a portion of the inductive main coupling between the first pair of adjacent conductors. The in-line resonator filter is able to provide one or more transmission zeros without requiring any discrete bypass connectors that provide direct ohmic connection between pairs of non-adjacent conductors. As such, the in-line resonator filters can be smaller, less complex, and less susceptible to damage.

    TUNABLE BANDPASS FILTER
    8.
    发明申请
    TUNABLE BANDPASS FILTER 有权
    TUNABLE BANDPASS过滤器

    公开(公告)号：US20130162374A1

    公开(公告)日：2013-06-27

    申请号：US13774363

    申请日：2013-02-22

    申请人： CommScope Italy S.r.l.

    发明人： Stefano Tamiazzo ,  Giuseppe Resnati

    IPC分类号： H01P1/20

    CPC分类号： H01P1/20309 ,  H01P1/201 ,  H01P1/205 ,  H01P1/2086 ,  H01P7/04 ,  H01P11/00 ,  H01P11/007 ,  H03H7/0123 ,  H03H7/12 ,  H03H7/1791 ,  H03H2250/00 ,  Y10T29/49826

    摘要： A bandpass filter has a combline structure having a plurality of cascaded nodes. A plurality of nodes in the filter are connected both to resonant elements (a.k.a. resonators) and non-resonant elements (including elements having inductances and/or capacitances that do not resonate in a predetermined frequency band of interest). The resonant frequencies of the resonant elements may be adjusted, in order to adjust the location of the center frequency and/or the width of the passband of the filter. The characteristics of the resonant and non-resonant elements are selected such that the poles of the filter, when plotted on the complex plane, move substantially along the imaginary axis when the resonant frequencies are adjusted, without substantial movement along the real axis. The resulting bandpass filter has substantially constant losses and substantially constant absolute selectivity over a relatively wide range of bandwidths.

    摘要翻译： 带通滤波器具有具有多个级联节点的梳状结构。 滤波器中的多个节点既连接到谐振元件（例如谐振器）和非共振元件（包括在感兴趣的预定频带中不谐振的电感和/或电容的元件）。 可以调节谐振元件的谐振频率，以便调节滤波器的中心频率的位置和/或通带的宽度。 选择共振和非共振元件的特性，使得当绘制在复平面上时，滤波器的极点在谐振频率被调整时基本沿着虚轴移动，而不沿实际实质运动。 所得到的带通滤波器在相对宽的带宽范围内具有基本恒定的损耗和基本上恒定的绝对选择性。