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公开(公告)号：US12062827B2
公开(公告)日：2024-08-13
申请号：US17297178
申请日：2019-02-01
申请人： GOOGLE LLC
发明人： Ofer Naaman
摘要： An apparatus includes a directional coupler and an absorptive low pass filter, in which the directional coupler has a first transmission line extending from a first port to a second port and a second transmission line extending from a third port to a fourth port, the first transmission line and the second transmission line configured such that a portion of a signal travelling from the first port onto the first transmission line is coupled to the second transmission line and towards the third port. The second port is connected to the fourth port of the directional coupler via the absorptive low pass filter. When the signal is input into the first port of the directional coupler and output through the third port of the directional coupler, the signal is substantially unattenuated if the frequency of the signal is in a passband of the absorptive low pass filter.
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公开(公告)号：US12021291B2
公开(公告)日：2024-06-25
申请号：US17799687
申请日：2021-05-28
申请人： WUGUANG SYSTEM COMPANY LIMITED , ACCULA ELECTRONIC TECHNOLOGIES PTE. LTD , AVALEN INFO SYSTEM TECHNOLOGIES COMPANY LIMITED
发明人： Qingnan Meng
CPC分类号： H01P7/105 , H01P1/2002 , H01P1/2086 , H01P3/16
摘要： Disclosed are a high-Q multi-mode dielectric resonant structure and a dielectric filter. The high-Q multi-mode dielectric resonant structure includes a cavity, a dielectric support frame, a dielectric resonator and a cover plate, and the cavity is formed by a sealed space, herein one surface of the cavity is a cover plate surface; the dielectric resonator is formed by a medium; and the dielectric support frame is mounted in any positions between the dielectric resonator and an inner wall of the cavity, matched with any shapes of the dielectric resonator and the cavity and fixed by connecting, and the ratio of the dimension of the inner wall of the cavity to the corresponding dimension of the dielectric resonator corresponding to three axial directions thereof is between 1.01-4.5. Embodiments of the present invention may solve a scheme that the filter is small in volume, low in insertion loss, and high in suppression, and may form a multi-mode, and a Q value is greater than that of a traditional dielectric multi-mode technology.
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公开(公告)号：US12021287B2
公开(公告)日：2024-06-25
申请号：US17310893
申请日：2019-03-29
发明人： Peiguang Lu , Haitao Liu , Weidong Wang
CPC分类号： H01P1/2002 , H01P1/2053 , H01P1/2084 , H01P1/2088 , H01P7/065 , H01P7/10
摘要： A resonating structure and a dielectric filter having the same are disclosed. The resonating structure comprises a body, at least one set of negative coupling holes, and a conductive material layer. The body is made of a solid dielectric material and comprises at least two resonators. The negative coupling holes are formed at a connection between two adjacent resonators. Each set of negative coupling holes comprises a first blind hole and a second blind hole disposed on two opposite surfaces of the body respectively. The first blind hole and the second blind hole are offset from each other in a plane perpendicular to a direction along which the first or second blind hole is dug. The conductive material layer covers surfaces of the body and surfaces of the first blind hole and the second blind hole.
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公开(公告)号：US12009603B2
公开(公告)日：2024-06-11
申请号：US17605673
申请日：2020-03-26
发明人： Lei Yang , Hangsheng Wen
CPC分类号： H01Q3/267 , H01P1/2007 , H01P5/19 , H04B7/0617 , H04B7/086
摘要： A bias tee circuit comprises: a combining path having first and second ends and configured to transmit a combined signal which comprises a combination of an RF signal and a DC signal; an RF path having first and second ends and configured to transmit the RF signal included in the combined signal; a DC path having first and second ends and configured to transmit the DC signal included in the combined signal; and an impedance transformer connected between the first end of the combining path, the first end of the RF path and the first end of the DC path, and configured to make the reflection coefficient of the transmitted RF signal have at least two resonant modes within an operating RF band.
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公开(公告)号：US20240145895A1
公开(公告)日：2024-05-02
申请号：US17754931
申请日：2022-01-29
发明人： Wenxin CAI , Yu CAO , Yahui HU
CPC分类号： H01P3/16 , H01P1/2002 , H01P1/38
摘要： Disclosed is a circular filter assembly, relating to the field of wireless communication. The circular filter assembly includes: a dielectric filter and a dielectric waveguide circulator. The dielectric waveguide circulator is provided with at least three end portions. An end of the dielectric filter is connected to one of the end portions. A cascade matching window is disposed at a connection between the dielectric filter and the end portion, and the cascade matching window is used for adjusting impedance of the circular filter assembly. The dielectric waveguide circulator and the dielectric filter are integrally formed. By integrally forming the dielectric waveguide circulator and the dielectric filter, connecting members between the dielectric waveguide circulator and the dielectric filter can be reduced. In addition, the cascade matching window is added to perform impedance adjustment, to obtain the same standing wave indicator as a conventional connection using a connector.
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公开(公告)号：US11955681B2
公开(公告)日：2024-04-09
申请号：US17556559
申请日：2021-12-20
申请人： TDK CORPORATION
发明人： Honoka Atsuchi , Yuta Ashida , Longfei Yi , Yoshinori Matsumaru , Shuhei Sawaguchi , Masahiro Tatematsu , Shigemitsu Tomaki
IPC分类号： H01P1/20
CPC分类号： H01P1/20
摘要： A band-pass filter includes a first input/output port, a second input/output port, a plurality of resonators, and a multilayer stack. The multilayer stack includes a plurality of stacked dielectric layers. Each of the resonators is an open-ended resonator formed of a conductor line in the multilayer stack. Each of the resonators includes a resonator conductor portion including a first line part and a second line part located away from each other in a direction orthogonal to a stacking direction of the plurality of dielectric layers, and a third line part connecting the first line part and the second line part. The first to third line parts extend to surround a space between the first line part and the second line part.
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公开(公告)号：US20240106099A1
公开(公告)日：2024-03-28
申请号：US18275132
申请日：2022-01-11
申请人： NEC Corporation
发明人： Keiichi Motoi
摘要： A filter according to the present disclosure includes input means for inputting a first polarization signal and a second polarization signal that are input from an antenna. The filter includes output means for outputting a first output signal corresponding to the first polarization signal and a second output signal corresponding to the second polarization signal, the first and the second output signals having been subjected to filter processing for making a desired frequency electric signal of each of the first and the second polarization signals pass through the first and the second output signals, respectively. The filter includes a resonator group that excites a first excitation mode and a second excitation mode perpendicular to each other by the input first and second polarization signals, whereby the output means outputs the first and the second output signals corresponding to the first and second polarization signals, respectively.
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公开(公告)号：US11936086B2
公开(公告)日：2024-03-19
申请号：US17637296
申请日：2020-09-17
发明人： Andrea Manzoni , Giuseppe Resnati , Kejia Cao , Daniele Marrelli
CPC分类号： H01P1/2088 , H01P1/2002
摘要： 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.
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公开(公告)号：US11916274B2
公开(公告)日：2024-02-27
申请号：US16971728
申请日：2019-02-21
发明人： Go Itami , Yohei Toriumi , Ken Okamoto , Jun Kato
CPC分类号： H01P1/20 , H01Q1/526 , H01Q15/0013
摘要： An electromagnetic field band-stop filter includes a plurality of unit structures that have reflection characteristics on an electromagnetic wave of a predetermined frequency. Each of the plurality of unit structures includes: a plurality of electrode parts each of which is disposed along a side of a polygon in a non-contact manner with another electrode part; and a plurality of conductor parts which are provided for the plurality of electrode parts on a one-to-one basis and each of which has at least one bent portion between one end and other end, the one ends of the plurality of conductor parts being connected to the electrode parts on a one-to-one basis and the other ends of the plurality of conductor parts being connected at one point on an inner side of the electrode parts in the individual unit structure. The plurality of unit structures are regularly and two-dimensionally disposed by disposing electrode parts of the plurality of unit structures to be adjacent to each other with a spacing that reflects the predetermined frequency.
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公开(公告)号：US20230411815A1
公开(公告)日：2023-12-21
申请号：US18037666
申请日：2021-07-26
发明人： Jingpeng LI
IPC分类号： H01P1/20
CPC分类号： H01P1/2002
摘要： Disclosed is a dielectric filter. The dielectric filter includes a body, a first resonant unit, a second resonant unit and a groove. The first resonant unit is arranged at a first side of the body. The second resonant unit is arranged at a second side of the body opposite to the first side. The groove is formed at a middle position of the body and is configured to partially separate the first resonant unit and the second resonant unit from each other. Each of the first resonant unit and the second resonant unit includes a first frequency resonant hole, a second frequency resonant hole and a coupling adjustment hole. In each of the first resonant unit and the second resonant unit, the first frequency resonant hole and the second frequency resonant hole are located on different surfaces of the body, and the first frequency resonant hole has a first longitudinal extension line perpendicular to a second longitudinal extension line of the second frequency resonant hole, and the coupling adjustment hole is located on another surface of the body and has a third longitudinal extension line parallel to the first longitudinal extension line or the second longitudinal extension line.
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