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：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.