公开(公告)号：US11757164B2

公开(公告)日：2023-09-12

申请号：US17319140

申请日：2021-05-13

Applicant: CommScope Italy S.r.I.

Inventor： Stefano Tamiazzo ,  Giuseppe Resnati

IPC: H01P1/205

CPC classification number: H01P1/2053 ,  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.

公开(公告)号：US20210336315A1

公开(公告)日：2021-10-28

申请号：US17319140

申请日：2021-05-13

Applicant: CommScope Italy S.r.I.

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.

公开(公告)号：US20170122990A1

公开(公告)日：2017-05-04

申请号：US15335733

申请日：2016-10-27

Applicant: CommScope Italy S.r.I.

Inventor： Riccardo Massa ,  Vito Caggiano ,  Gianluca Ratti

IPC: G01R23/20 ,  G01R31/28 ,  G01N3/34

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.

公开(公告)号：US20180358674A1

公开(公告)日：2018-12-13

申请号：US15736097

申请日：2016-07-05

Applicant: CommScope Italy S.r.I.

Inventor： Marco SANTONICCOLO ,  Stefano GALLI ,  Giuseppe RESNATI

IPC: H01P1/208 ,  H01P1/213 ,  H01P7/04 ,  H01P7/06

Abstract: 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.

公开(公告)号：US20170141446A1

公开(公告)日：2017-05-18

申请号：US15349559

申请日：2016-11-11

Applicant: CommScope Italy S.r.I.

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

IPC: H01P1/207

CPC classification number: H01P1/207 ,  H01P1/20345 ,  H01P1/2135 ,  H01P1/2138 ,  H01P7/06

Abstract: 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.