Patents Assigned to CommScope Italy S.r.l.
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Patent number: 11936086Abstract: A metallized dielectric waveguide filter includes an upper metallized dielectric waveguide having a plurality of upper resonant cavities, the upper metallized dielectric waveguide comprising an upper dielectric block having metallized outer walls, and a lower metallized dielectric waveguide having a plurality of lower resonant cavities, the lower metallized dielectric waveguide comprising a lower dielectric block having metallized outer walls. A first of the upper resonant cavities is operatively connected to a first of the lower resonant cavities via at least one coupling window. A first slot having metallized walls is provided in a portion of the upper dielectric block that is part of the first of the upper resonant cavities.Type: GrantFiled: September 17, 2020Date of Patent: March 19, 2024Assignee: CommScope Italy S.r.l.Inventors: Andrea Manzoni, Giuseppe Resnati, Kejia Cao, Daniele Marrelli
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Patent number: 11881609Abstract: An assembly for a radio frequency filter includes: an elongate pedestal with an upper surface; a resonator; a tuning member that is positioned above the resonator; and a screw that mounts the resonator to the upper surface of the pedestal, the screw including a shank with a thread and a head, the head including a plurality of recesses configured to receive a tool, the recesses extending through the head.Type: GrantFiled: April 18, 2022Date of Patent: January 23, 2024Assignee: CommScope Italy S.R.L.Inventors: Andrea Manzoni, Luca Bonato, Antonio Sala
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Patent number: 11799180Abstract: 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.Type: GrantFiled: September 23, 2021Date of Patent: October 24, 2023Assignee: CommScope Italy, S.r.l.Inventors: Xianxiang Li, Yangzhun Lv, Qing Mi, Qiyun Gu, Giuseppe Resnati
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Patent number: 11757164Abstract: 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.Type: GrantFiled: May 13, 2021Date of Patent: September 12, 2023Assignee: CommScope Italy S.r.l.Inventors: Stefano Tamiazzo, Giuseppe Resnati
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Patent number: 11721878Abstract: Filter devices are provided herein. A filter device includes a plurality of low-band resonators and a plurality of high-band resonators. In some embodiments, adjacent ones of the plurality of high-band resonators are spaced farther apart from each other than adjacent ones of the plurality of low-band resonators are spaced apart from each other.Type: GrantFiled: November 1, 2021Date of Patent: August 8, 2023Assignee: CommScope Italy S.r.l.Inventor: Stefano Tamiazzo
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Patent number: 11682820Abstract: Resonant cavity filters include a conductive housing having a floor. A dielectric resonator is mounted to extend upwardly from the floor. The dielectric resonator has a cylindrical body with a longitudinal bore that defines an inner sidewall. The longitudinal bore has a variable transverse cross-sectional area. A threaded dielectric fastener is at least partially inserted within the longitudinal bore of the cylindrical body. The dielectric resonator may have a protrusion that extends inwardly from the inner sidewall.Type: GrantFiled: November 18, 2021Date of Patent: June 20, 2023Assignee: CommScope Italy S.R.L.Inventors: Martin Kufa, Lukás Matrka, Frantisek Ondracek, Jaromir Peroutka, Giuseppe Resnati
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Patent number: 11223094Abstract: Filter devices are provided herein. A filter device includes a plurality of low-band resonators and a plurality of high-band resonators. In some embodiments, adjacent ones of the plurality of high-band resonators are spaced farther apart from each other than adjacent ones of the plurality of low-band resonators are spaced apart from each other.Type: GrantFiled: November 14, 2019Date of Patent: January 11, 2022Assignee: COMMSCOPE ITALY S.R.L.Inventor: Stefano Tamiazzo
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Patent number: 11183745Abstract: 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.Type: GrantFiled: August 28, 2020Date of Patent: November 23, 2021Assignee: CommScope Italy S.r.l.Inventors: Roman Tkadlec, Stefano Tamiazzo
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Patent number: 11158918Abstract: 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.Type: GrantFiled: February 28, 2020Date of Patent: October 26, 2021Assignee: CommScope Italy, S.r.l.Inventors: Xianxiang Li, Yangzhun Lv, Qing Mi, Qiyun Gu, Giuseppe Resnati
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Patent number: 10944144Abstract: RF transmission lines that include a conductive ground plane, a conductive strip that extends above the ground plane, one or more plastic strips disposed between the conductive ground plane and the conductive strip, the one or more plastic strips having a combined length that is at least half a length of the conductive strip, and a plurality of dielectric fasteners that maintain the conductive strip at a predetermined distance above the conductive ground plane.Type: GrantFiled: February 21, 2019Date of Patent: March 9, 2021Assignee: CommScope Italy, S.R.L.Inventor: Kimmo Henrik Olavi Kettunen
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Patent number: 10790564Abstract: 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.Type: GrantFiled: July 7, 2017Date of Patent: September 29, 2020Assignee: CommScope Italy, S.r.l.Inventors: Roman Tkadlec, Stefano Tamiazzo
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Patent number: 10658722Abstract: 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.Type: GrantFiled: January 25, 2019Date of Patent: May 19, 2020Assignee: CommScope Italy S.r.l.Inventors: Stefano Tamiazzo, Giuseppe Resnati
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Patent number: 10581133Abstract: 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.Type: GrantFiled: July 5, 2016Date of Patent: March 3, 2020Assignee: CommScope Italy, S.r.l.Inventors: Marco Santoniccolo, Stefano Galli, Giuseppe Resnati
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Patent number: 10530027Abstract: 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.Type: GrantFiled: July 19, 2018Date of Patent: January 7, 2020Assignee: CommScope Italy S.R.L.Inventors: Roman Tkadlec, YongJie Xu, Richard Brown, Giuseppe Resnati, Omar Parimbelli, Sammit Patel
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Patent number: 10236550Abstract: 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.Type: GrantFiled: July 10, 2015Date of Patent: March 19, 2019Assignee: CommScope Italy S.r.l.Inventors: Stefano Tamiazzo, Giuseppe Resnati
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Patent number: 10090938Abstract: For wireless cellular communications, a “smart” multi-band combiner system has a multi-band combiner and a passive inter-modulation (PIM) detection sub-system. The multi-band combiner combines multiple transmit signals in different downlink frequency bands into a single, multi-band transmit signal for transmission from a cell tower antenna. The PIM detection sub-system characterizes the frequency components in the multi-band transmit signal to predict PIM products and determine if any predicted PIM products might interfere with any receive signals in any uplink frequency bands. If so, the PIM detection sub-system generates a signal indicating the presence of such predicted interfering PIM products, and the system installer and/or the network administrator can take remedial action to prevent the PIM products from interfering with user communications.Type: GrantFiled: January 6, 2015Date of Patent: October 2, 2018Assignee: CommScope Italy, S.r.l.Inventors: Sammit A. Patel, Ray K. Butler, John W. Brunner, Xiaohua Hou
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Patent number: 10050323Abstract: 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.Type: GrantFiled: November 11, 2016Date of Patent: August 14, 2018Assignee: CommScope Italy S.R.L.Inventors: Roman Tkadlec, YongJie Xu, Richard Brown, Giuseppe Resnati, Omar Parimbelli, Sammit Patel
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Patent number: 9863987Abstract: 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.Type: GrantFiled: October 27, 2016Date of Patent: January 9, 2018Assignee: CommScope Italy S.r.l.Inventors: Riccardo Massa, Vito Caggiano, Gianluca Ratti
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Patent number: 9810369Abstract: 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.Type: GrantFiled: June 10, 2013Date of Patent: November 7, 2017Assignee: CommScope Italy S.R.L.Inventors: Erik William Lilieholm, Juan Jose Irola Borja
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Patent number: 9755292Abstract: The invention is a compact three-port signal combiner suitable for use in a base station having two different wireless systems. The combiner is designed as a four-port network, but one of the ports is terminated with a predetermined load, thus leaving three ports for connection to user equipment. A first port (A) receives from an antenna a first input signal comprising first and second receive bands and transmits to the antenna a first output signal comprising a transmit band. A second port (R), connected to the first wireless system, outputs to the first wireless system a second output signal comprising the first and second receive bands. A third port (T\R) outputs, to the second wireless system, a third output signal comprising the first and second receive bands and receives from the second wireless system a second input signal that is to be transmitted from the first port.Type: GrantFiled: April 13, 2015Date of Patent: September 5, 2017Assignee: CommScope Italy, S.r.l.Inventor: Stefano Tamiazzo