Band-stop filter, transmission line for band-stop filter and multiplexer

    公开(公告)号:US11158918B2

    公开(公告)日:2021-10-26

    申请号:US16804024

    申请日:2020-02-28

    Abstract: 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.

    In-line filter having mutually compensating inductive and capacitive coupling

    公开(公告)号:US11024931B2

    公开(公告)日:2021-06-01

    申请号:US16846614

    申请日:2020-04-13

    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.

    IN-LINE FILTER HAVING MUTUALLY COMPENSATING INDUCTIVE AND CAPACITIVE COUPLING

    公开(公告)号:US20190165440A1

    公开(公告)日:2019-05-30

    申请号:US16257124

    申请日:2019-01-25

    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.

    Apparatus and methods for dynamic passive intermodulation distortion testing

    公开(公告)号:US09863987B2

    公开(公告)日:2018-01-09

    申请号:US15335733

    申请日:2016-10-27

    CPC classification number: G01R23/20 G01N3/34 G01R31/2853

    Abstract: A passive intermodulation (“PIM”) distortion test apparatus includes a housing, hammering elements disposed within the housing, each hammering element including a moveable striking member, a strike plate positioned above the hammering elements, where a bottom surface of the strike plate is positioned at a distance above the hammering elements such that the moveable striking members of the hammering elements impact the strike plate when moved into their activated positions, and a retaining member that is configured to hold a device under test on a top surface of the strike plate while a PIM distortion test is performed on the device under test.

    MOUNTING BRACKET FOR A PLURALITY OF SUPPORT STRUCTURES
    9.
    发明申请
    MOUNTING BRACKET FOR A PLURALITY OF SUPPORT STRUCTURES 有权
    安装支架支持多种结构

    公开(公告)号:US20140252185A1

    公开(公告)日:2014-09-11

    申请号:US13914371

    申请日:2013-06-10

    CPC classification number: F16M13/022 H01Q1/1207

    Abstract: A bracket for mounting a device to support structure has (i) a first side and (ii) second and third sides that extend perpendicularly from opposite edges of the first side in the same direction, such that the second and third sides are parallel to each other. The bracket supports a first mounting configuration in which the first side is attached to a face of the device and the second side is attached to a plane of the support structure such that the side of the device is perpendicular to the plane of the support structure. The bracket also supports a second mounting configuration in which the third side is attached to the face of the device and the second side is attached to the plane of the support structure such that the face of the device is parallel to the plane of the support structure.

    Abstract translation: 用于将装置安装到支撑结构的支架具有(i)第一侧和(ii)从相同方向上的第一侧的相对边缘垂直延伸的第二和第三侧,使得第二侧和第三侧平行于每个 其他。 支架支撑第一安装构造,其中第一侧附接到装置的表面,并且第二侧附接到支撑结构的平面,使得装置的侧面垂直于支撑结构的平面。 支架还支撑第二安装构造,其中第三侧附接到装置的表面,并且第二侧附接到支撑结构的平面,使得装置的表面平行于支撑结构的平面 。

    FILTERS INCLUDING DETUNED BOX SECTION RESONATOR CONFIGURATIONS AND/OR RESONATORS HAVING BEVELED TOP SURFACES

    公开(公告)号:US20250023220A1

    公开(公告)日:2025-01-16

    申请号:US18708547

    申请日:2022-10-19

    Inventor: Stefano TAMIAZZO

    Abstract: Filters include a housing and at least first through fourth resonators are mounted within the housing. The first resonator is configured to couple with the second resonator and the third resonator but not the fourth resonator. The second resonator is configured to couple with the first resonator and the fourth resonator but not the third resonator. The third resonator is configured to couple with the first resonator and the fourth resonator but not the second resonator. The fourth resonator is configured to couple with the second resonator and the third resonator but not the first resonator. The first, second and fourth resonators are configured to resonate within a passband of the filter, while the third resonator is configured to resonate outside the passband of the filter.

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