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公开(公告)号：US20220320702A1
公开(公告)日：2022-10-06
申请号：US17583804
申请日：2022-01-25
摘要： Radio frequency (RF) switches are provided. An RF switch includes a first RF transmission line and a second RF transmission line that are capacitively coupled to each other. Moreover, the RF switch includes a third RF transmission line having a signal trace that is electrically isolated from the first and second RF transmission lines. Related methods of operating filter devices are also provided.
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公开(公告)号：US11158918B2
公开(公告)日：2021-10-26
申请号：US16804024
申请日：2020-02-28
发明人： Xianxiang Li , Yangzhun Lv , Qing Mi , Qiyun Gu , Giuseppe Resnati
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.
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公开(公告)号：US11024931B2
公开(公告)日：2021-06-01
申请号：US16846614
申请日：2020-04-13
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.
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公开(公告)号：US10790564B2
公开(公告)日：2020-09-29
申请号：US16095219
申请日：2017-07-07
发明人： Roman Tkadlec , Stefano Tamiazzo
摘要： In-line filters may include a tubular metallic housing defining a single inner cavity that extends along a longitudinal axis and a plurality of resonators that are spaced apart along the longitudinal axis within the single inner cavity, each resonator having a stalk. The stalks of first and second of the resonators that are adjacent each other are rotated to have different angular orientations.
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公开(公告)号：US10581133B2
公开(公告)日：2020-03-03
申请号：US15736097
申请日：2016-07-05
摘要： A resonant cavity filter has a housing having a resonator mounted therein, a tuning screw that comprises a head portion, a metallic tuning element and a dielectric spacer interposed between the head portion and the metallic tuning element. The tuning screw is mounted for coaxial insertion into an interior of the resonator to adjust a frequency response of the resonant cavity filter.
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公开(公告)号：US20190165440A1
公开(公告)日：2019-05-30
申请号：US16257124
申请日：2019-01-25
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.
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公开(公告)号：US09863987B2
公开(公告)日：2018-01-09
申请号：US15335733
申请日：2016-10-27
发明人： Riccardo Massa , Vito Caggiano , Gianluca Ratti
CPC分类号： G01R23/20 , G01N3/34 , G01R31/2853
摘要： 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.
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公开(公告)号：US20140252185A1
公开(公告)日：2014-09-11
申请号：US13914371
申请日：2013-06-10
IPC分类号： F16M13/02
CPC分类号： F16M13/022 , H01Q1/1207
摘要： 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.
摘要翻译： 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 。
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公开(公告)号：US20240222832A1
公开(公告)日：2024-07-04
申请号：US18558465
申请日：2022-05-10
摘要： 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.
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公开(公告)号：US11990663B2
公开(公告)日：2024-05-21
申请号：US17583804
申请日：2022-01-25
摘要： Radio frequency (RF) switches are provided. An RF switch includes a first RF transmission line and a second RF transmission line that are capacitively coupled to each other. Moreover, the RF switch includes a third RF transmission line having a signal trace that is electrically isolated from the first and second RF transmission lines. Related methods of operating filter devices are also provided.
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