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1.发明公开公开(公告)号：US20230318201A1
公开(公告)日：2023-10-05
申请号：US17712422
申请日：2022-04-04
发明人： Alf Ahlström , Anders Edquist
CPC分类号： H01Q21/0006 , H01P1/202
摘要： Filter arrangement comprising an inner electric conductor comprising at least one inner conductor segment, an outer electric conductor at least partly surrounding the inner conductor, at least one dielectric element and at least one coil spring. The at least one dielectric element is arranged sandwiched between at least one inner conductor segment and the outer conductor to form a capacitance between the outer conductor and the inner conductor segment. The at least one coil spring is arranged inside said outer conductor to force the inner conductor segment and the at least one dielectric element against the outer conductor. The at least one coil spring is made from an electrically conducting material to form an inductance and is electrically connected with the inner conductor segment. An antenna feeding network and a multi-radiator antenna comprising such a filter arrangement is also provided.
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公开(公告)号：US20220209381A1
公开(公告)日：2022-06-30
申请号：US17138384
申请日：2020-12-30
发明人： Guo CHEN , Ed LOTT , Jessica BROCKETT
摘要： A waveguide assembly is disclosed herein. In an embodiment, a waveguide assembly includes a circuit board, a housing and a waveguide filter channel. The circuit board has at least one waveguide interface formed from an electrically conductive material. The housing is configured to be attached to the circuit board so as to align with the at least one waveguide interface. The waveguide filter channel is formed between the circuit board and the housing, with the circuit board and the housing each forming at least a portion of the waveguide filter channel. The waveguide filter channel is configured to at least one of (i) receive a radio frequency signal from the at least one waveguide interface or (ii) output the radio frequency signal to the at least one waveguide interface.
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公开(公告)号：US20220190453A1
公开(公告)日：2022-06-16
申请号：US17442530
申请日：2020-03-25
申请人： Emblation Limited
发明人： Gary Beale , Eamon McErlean
摘要： A filtering device for use in a medical microwave delivery system is disclosed. The filtering device comprises a DC block and a microwave absorbing element. The microwave absorbing element is disposed around the DC block and/or around one or more elements within the DC block. Also disclosed is a medical microwave delivery system comprising a microwave generator system and the filtering device, wherein the filtering device is coupled to an output of the microwave generator system.
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公开(公告)号：US11245167B2
公开(公告)日：2022-02-08
申请号：US16111591
申请日：2018-08-24
发明人： Martin Skiebe
摘要： A coaxial filter comprises a housing that surrounds a receiving space. The housing comprises a trough-shaped housing element with sidewalls and a front wall. The housing further comprises a further trough-shaped housing element, wherein the two trough-shaped housing elements are placed on top of one another, thus forming the receiving space; or a lid arrangement which, together with the trough-shaped housing element forms the receiving space. At least one resonator inner conductor arrangement comprises a connecting bridge, with which resonator inner conductors are conductingly connected.
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公开(公告)号：US20210167481A1
公开(公告)日：2021-06-03
申请号：US16627761
申请日：2018-10-30
发明人： Yuanchun LI , DIsi WU
摘要： The invention discloses a LTCC wide stopband filtering balun based on discriminating coupling. The filtering balun includes a dielectric, and a first resonator, a second resonator, a first feeding line, a second feeding line, a third feeding line and a metal ground which are arranged inside the dielectric. The two resonators are both half-wavelength resonators distributed on different layers, and the layers are connected through metal through holes. the first feeding line is coupled with a specific area of the first resonator for performing feeding to suppress a second harmonic, and the second feeding line and the third feeding line are coupled with a specific area of the second resonator for performing feeding to suppress a third harmonic, thus realizing a wide stopband filtering performance. The second feeding line and the third feeding line are symmetrically arranged about a center of the second resonator, thus realizing a same-amplitude reverse-phase balun output characteristic. The LTCC wide stopband filtering balun based on discriminating coupling according to the invention can suppress the second harmonic and the third harmonic, and a LTCC multi-layer circuit technology used reduces a size of a filtering balun.
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公开(公告)号：US10957960B2
公开(公告)日：2021-03-23
申请号：US16713198
申请日：2019-12-13
摘要： The present invention is a high Q tunable co-axial filter, which maintains a constant absolute bandwidth and a constant Q over the tuning range. The present filter can be tuned by a single rotational mechanism irrespective of the filter order. A plurality of tunable resonators is aligned on a common filter axis. Each resonator has a casing having an inner wall and a cavity. The resonators are coupled by an iris opening. A pair of end plates completes the filter casing. A rotating rod placed on the common axis of the resonated, that has a tuning post attached to it, and each post located in each resonator, is used to tune the filter.
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公开(公告)号：US10811749B2
公开(公告)日：2020-10-20
申请号：US16523068
申请日：2019-07-26
申请人： PPC BROADBAND, INC.
发明人： Erdogan Alkan
摘要： An isolator includes a body including an input connector and an output connector. The isolator also includes an outer shield positioned at least partially around a portion of the body. The isolator also includes a coupling member electrically coupled to the outer shield and positioned at least partially within the outer shield. The isolator also includes a coaxial circuit positioned at least partially around a first portion of the coupling member. The isolator also includes a toroid positioned at least partially around a second portion of the coupling member. The toroid is configured to filter radio frequency (RF) signals. The first portion and the second portion are axially-adjacent to one another. The isolator also includes a conditioning circuit in communication with the input connector and the output connector. The conditioning circuit is configured to condition the RF signals communicated between the input connector and the output connector.
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公开(公告)号：US20200259234A1
公开(公告)日：2020-08-13
申请号：US16637593
申请日：2018-09-14
发明人： Motomi WATANABE , Takeshi YUASA , Takuma NISHIMURA
摘要： A coaxial line is provided which includes: a first columnar conductor disposed inside a multilayer substrate such that one end thereof is coupled to a first stripline and that the other end thereof is coupled to a second stripline; and one or more second columnar conductors penetrating the multilayer substrate such that one end thereof is coupled to a ground layer and that the other end thereof is coupled to a ground layer, the first columnar conductor acting as an inner conductor, and the second columnar conductors acting as outer conductors. Each of the first and second striplines is coupled to an open stub acting as resonators and a matching conductor acting as capacitance matching elements.
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公开(公告)号：US10446897B2
公开(公告)日：2019-10-15
申请号：US16415569
申请日：2019-05-17
申请人： Kyu Young Kim
发明人： Kyu Young Kim
摘要： Disclosed is a low-pass filter connected to a capacitor by a T-junction and used for a multiplexer. The low-pass filter includes: a plurality of capacitor elements which is formed of a capacitive conductor of a disk shape; and a plurality of inductor elements which connects the capacitor elements to each other and is formed in a rod shape. The plurality of capacitor elements and the plurality of inductor elements are alternately arranged, and the capacitor element which is connected to the capacitor has a capacitance value smaller than a capacitance value which is determined by a cut-off frequency of the low-pass filter.
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公开(公告)号：US10439263B2
公开(公告)日：2019-10-08
申请号：US15556538
申请日：2016-05-10
发明人： Bernd Schöninger
摘要： A high-frequency conductor system has a high-frequency housing which comprises a housing base, a housing cover which is at a distance from the housing base, and a housing wall which runs circumferentially between the housing base and the housing cover, as a result of which an accommodation space is formed. At least one cable-bound RF bushing is arranged within the accommodation space. The cable-bound RF bushing is electrically isolated from the high-frequency housing. A capacitive coupling element is arranged on at least one part of the circumference of the cable-bound RF bushing and is electrically connected to said cable-bound RF bushing. The capacitive coupling element has two end sides which are oriented transverse or perpendicular to the propagation direction of the cable-bound RF bushing. A first coupling web is electrically connected to the high-frequency housing and is arranged at a distance from the end side in order to generate a capacitive coupling.
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