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公开(公告)号：US20240275012A1
公开(公告)日：2024-08-15
申请号：US18439342
申请日：2024-02-12
Inventor： Yohei KAWAKAMI , Tomohiro Yamaji , Yoshiro Urade , Aiko Yamaguchi
CPC classification number: H01P1/2013 , H01P3/121 , H01P7/088
Abstract: An object is to provide a stepped impedance resonator capable of efficiently reducing a footprint. A resonator includes a coplanar waveguide and a section. The coplanar waveguide has a first impedance. The section has a second impedance different from the first impedance and includes a fishbone waveguide. The resonator is configured as a stepped impedance resonator in which the coplanar waveguide and the section including the fishbone waveguide are connected in series.
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公开(公告)号：US20240213640A1
公开(公告)日：2024-06-27
申请号：US18555863
申请日：2021-12-17
Applicant: KYOCERA CORPORATION
Inventor： Hiromichi YOSHIKAWA
Abstract: A composite resonator includes a first resonator extending in a first plane direction, a second resonator spaced apart from the first resonator in a first direction and extending in the first plane direction, a third resonator located between the first resonator and the second resonator in the first direction and configured to be magnetically or capacitively connected to or electrically connected to each of the first resonator and the second resonator, and a reference conductor extending in the first plane direction, located between the first resonator and the second resonator in the first direction and serving as a potential reference of the first resonator and the second resonator.
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公开(公告)号：US11990661B2
公开(公告)日：2024-05-21
申请号：US17360679
申请日：2021-06-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Bengui Yuan , Puke Zhou , Jinyan Li
CPC classification number: H01P1/2086 , H01P1/2002 , H01P1/201 , H01P1/2084 , H01P7/10 , H01P11/007
Abstract: The present disclosure relates to transverse magnetic wave (TM) mode filters and methods for manufacturing a TM mode filter. One example TM mode filter includes a filter body, a dielectric, and a transition layer, the filter body including a filter cavity and a cover, and having hollow confined space, the dielectric located in the hollow confined space, and the transition layer configured to connect the dielectric and the filter body. A coefficient of thermal expansion (CTE) of the transition layer is between a CTE of the filter body and a CTE of the dielectric.
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公开(公告)号：US20230114846A1
公开(公告)日：2023-04-13
申请号：US17861951
申请日：2022-07-11
Applicant: Rohde & Schwarz GmbH & Co. KG
Inventor： Thomas RUSTER
Abstract: Disclosed is a frequency-dependent microwave filter (1). The filter (1) comprises an enclosure (11) comprising a filter medium including at least one constituent of: atoms, molecules, ions, and point defects in an optically pumpable solid. The at least one constituent is excitable to an initial energy state. The filter (1) further comprises a field generator (12) configured to generate an inhomogeneous electric and/or magnetic field (12A) within the enclosure (11). The filter (1) further comprises means (13) for feedthrough of a microwave signal through the enclosure (11) and an optical pump (14) configured to periodically excite the at least one constituent of the filter medium to the initial energy state in alternation with the feedthrough of the microwave signal through the enclosure (11). Thereby, intensity-dependent filtering is achieved.
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Patent Agency Ranking
公开(公告)号：US11245386B2
公开(公告)日：2022-02-08
申请号：US14170248
申请日：2014-01-31
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Daisuke Tokuda
IPC: H03H11/02 , H03H7/01 , H01L23/522 , H04B1/04 , H01L23/64 , H01L23/66 , H04B1/18 , H01L25/16 , H01P1/201 , H01Q1/50 , H03H1/00 , H03H7/46
Abstract: A high-frequency module includes a semiconductor chip device that is mounted on an external circuit substrate by wire bonding. A switch forming section, a power amplifier forming section and a low noise amplifier forming section, realized by a group of FETs, which are active elements, are formed in the semiconductor chip device. Flat plate electrodes, which form capacitors are formed in the semiconductor chip device. Conductor wires that connect the external circuit substrate and the semiconductor chip device function as inductors. A group of passive elements that includes inductors and capacitors is formed. As a result, a high-frequency module that can be reduced in size while still obtaining the required transmission characteristic is realized.
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公开(公告)号：US10263592B2
公开(公告)日：2019-04-16
申请号：US15298459
申请日：2016-10-20
Applicant: Associated Universities, Inc.
Inventor： Matthew Alexander Morgan
Abstract: Reflectionless low-pass, high-pass, band-pass, band-stop, all-pass, all-stop, and multi-band filters, as well as a method for designing such filters is disclosed, along with a method of enhancing the performance of such filters through the use of unmatched sub-networks to realize an optimal frequency response, such as the Chebyshev equal-ripple response. These filters preferably function by absorbing the stop-band portion of the spectrum rather than reflecting it back to the source, which has significant advantages in many different applications. The unmatched sub-networks preferably offer additional degrees of freedom by which element values can be assigned to realize improved cutoff sharpness, stop-band rejection, or other measures of performance.
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公开(公告)号：US10244618B2
公开(公告)日：2019-03-26
申请号：US15631336
申请日：2017-06-23
Applicant: Western Digital Technologies, Inc.
Inventor： Albert Wallash , John Contreras , Satoshi Nakamura , Hui He
IPC: H05K1/02 , H01P7/06 , G11B33/14 , H05K1/11 , H05K1/03 , G11B25/04 , H01P1/201 , H01P1/203 , H01P3/02 , G11B33/12
Abstract: Disclosed herein are printed circuit boards (PCBs) with patterned ground structure filters and data storage devices comprising such PCBs. Each PCB comprises a resonator having an L-shape or a zig-zag shape in a plane of the printed circuit board and at least one signal trace. The resonator has a first dimension and a second dimension in the plane of the printed circuit board. A portion of the at least one signal trace is situated over the resonator and is separated by a distance from the resonator by a dielectric material. In some embodiments, at least part of the portion of the at least one signal trace extends in a same direction as the first dimension (in the case of an L-shaped resonator) or tracks the zig-zag shape of the resonator (in the case of a zig-zag-shaped resonator).
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公开(公告)号：US20180151932A1
公开(公告)日：2018-05-31
申请号：US15361908
申请日：2016-11-28
Applicant: Nokia Solutions and Networks Oy
Inventor： David R. Hendry
CPC classification number: H01P1/201 , H01P1/2002 , H01P1/202 , H01P1/2082 , H01P1/2086 , H01P7/06 , H01P7/105
Abstract: An RF filter includes: an electrical conductor defining an outer sphere; a dielectric material defining an inner sphere disposed within the conductor outer sphere; and at least a first electrical probe and a second electrical probe. Each probe extends through the conductor and is electrically insulated from it. A spherical shape of one or both of the inner and outer spheres is interrupted by: a) a first localized discontinuity in said spherical shape disposed along a first axis passing through a geometric center of the one or both of the inner and outer spheres; and b) a second localized discontinuity in said sphere form disposed along a second axis passing through the geometric center, the second axis perpendicular to the first axis. There can be more than these two discontinuities, implemented as chamfers, tuning screws, and the like. Series and parallel coupling of the spheres is detailed.
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公开(公告)号：US20180108963A1
公开(公告)日：2018-04-19
申请号：US15462000
申请日：2017-03-17
Inventor： Seong Mo MOON , In Bok YOM , Moon-Que LEE
Abstract: Provided is a microwave filter system having a feedback structure. The microwave filter system may include an input hybrid coupler configured to output first output signals having a phase difference with respect to an input signal; filters disposed to be in parallel with an output end of the input hybrid coupler, and configured to filter the first output signals; and an output hybrid coupler configured to output second output signals having a phase difference with respect to each of signals filtered through the filters. An output signal of the output hybrid coupler is applied to an input end of the input hybrid coupler along a feedback path.
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