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    TUNABLE BANDPASS FILTER
    11.
    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

    Applicant: CommScope Italy S.r.l.

    Inventor： Stefano Tamiazzo ,  Giuseppe Resnati

    IPC: H01P1/20

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

    Abstract: 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.

    Abstract translation: 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。

    FILTERS INCLUDING DUAL CROSS-COUPLINGS AND RELATED COMBINERS
    12.
    发明公开
    FILTERS INCLUDING DUAL CROSS-COUPLINGS AND RELATED COMBINERS 审中-公开

    公开(公告)号：US20240222832A1

    公开(公告)日：2024-07-04

    申请号：US18558465

    申请日：2022-05-10

    Applicant: COMMSCOPE ITALY S.R.L.

    Inventor： Stefano Tamiazzo ,  Gabriele Burato ,  Stefano Accarino

    IPC: H01P1/207 ,  H01P5/16

    CPC classification number: H01P1/207 ,  H01P5/16

    Abstract: Filters include first through fourth resonant cavities, an input that extends into the first resonant cavity, and an output that extends from the fourth resonant cavity. The first resonant cavity is configured to couple with the second and third resonant cavities, the second resonant cavity is configured to couple with the third and fourth resonant cavities, and the third resonant cavity is configured to couple with the fourth resonant cavity. A magnitude of the coupling between the first and third resonant cavities is configured to be substantially equal to a second magnitude of the coupling between the second and fourth resonant cavities. Combiners that include such filters are also provided.

    IN-LINE FILTER HAVING MUTUALLY COMPENSATING INDUCTIVE AND CAPACITIVE COUPLING
    15.
    发明申请
    IN-LINE FILTER HAVING MUTUALLY COMPENSATING INDUCTIVE AND CAPACITIVE COUPLING 审中-公开

    公开(公告)号：US20200243939A1

    公开(公告)日：2020-07-30

    申请号：US16846614

    申请日：2020-04-13

    Applicant: CommScope Italy S.r.l.

    Inventor： Stefano Tamiazzo ,  Giuseppe RESNATI

    IPC: H01P1/205

    Abstract: 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
    16.
    发明授权
    Tunable bandpass filter 有权
    可调谐带通滤波器

    公开(公告)号：US09515362B2

    公开(公告)日：2016-12-06

    申请号：US13774363

    申请日：2013-02-22

    Applicant: CommScope Italy S.r.l.

    Inventor： Stefano Tamiazzo ,  Giuseppe Resnati

    IPC: H01P1/205 ,  H01P7/04 ,  H01P1/203 ,  H01P1/201 ,  H01P11/00 ,  H01P1/208 ,  H03H7/12 ,  H03H7/01

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

    Abstract: 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.

    Abstract translation: 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。

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