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公开(公告)号：USD720312S1
公开(公告)日：2014-12-30
申请号：US29488062
申请日：2014-04-15
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公开(公告)号：USD720311S1
公开(公告)日：2014-12-30
申请号：US29488060
申请日：2014-04-15
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公开(公告)号：US10763561B2
公开(公告)日：2020-09-01
申请号：US16301827
申请日：2017-05-02
申请人： NEC Corporation
发明人： Takahiro Miyamoto
摘要： There is provided a band-pass filter capable of easily changing a bandwidth of a pass band. A band-pass filter (1B) of the present disclosure includes: a housing (11), a plurality of resonant plates (12) stored in the housing (11), a first coupling conductor (15) connecting two adjacent resonant plates (12) of the plurality of resonant plates (12), and a second coupling conductor (16) arranged at a position affecting a coupling coefficient between the two adjacent resonant plates (12), wherein a distance from the resonant plate (12) to the second coupling conductor (16) is changeable.
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公开(公告)号：US10559865B2
公开(公告)日：2020-02-11
申请号：US15742187
申请日：2016-06-09
申请人： NEC CORPORATION
发明人： Takahiro Miyamoto
摘要： A band pass filter suitable for varying the center frequency of the passband and a method for controlling the band pass filter are provided. A band pass filter of the present invention includes: two TE01δ-mode dielectric resonators (10) and (20) disposed so as to oppose to each other; and a housing (30) made of metal enclosing the two dielectric resonators (10) and (20). An opposing interval between two dielectric resonators (10) and (20) is variable.
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公开(公告)号：US10347959B2
公开(公告)日：2019-07-09
申请号：US15704696
申请日：2017-09-14
申请人： NEC Corporation
摘要： Conventional coaxial wiring devices present a problem in that the management of the manufacturing process therefor is difficult. A coaxial wiring device according to the present invention includes a first member, a second member, and a conductor plate. The first member (10) and the second member (30) include, when a line that connects a first port and a second port is denoted by a reference line, a first groove (11) that has a central point on the reference line and extends in a direction that intersects with the reference line; a second groove (12) that connects one end (FN1) of the first groove (11) and the first port; a third groove (13) that connects the other end (FN2) of the first groove (11) and the first port and has a shape that is line symmetrical to the second groove (12) with respect to the reference line; a fourth groove (14) that connects one end (FN1) of the first groove (11) and the second port; and a fifth groove (15) that connects the other end (FN2) of the first groove (11) and the second port and has a shape that is line symmetrical to the fourth groove (14) with respect to the reference line.
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公开(公告)号：US09786974B2
公开(公告)日：2017-10-10
申请号：US14436009
申请日：2013-10-18
申请人： NEC Corporation
CPC分类号： H01P1/2053 , H01P1/205 , H01P1/2056 , H01P1/207 , H01P1/2084 , H01P7/04 , H01P7/06
摘要： The present invention comprises: a conductive chassis having a cavity resonator; a conductive cover to cover the cavity resonator; a resonant element arranged in the cavity resonator, one end of the resonant element being connected with the chassis and the other end being open end; and a movable conductor arranged in a space between the open end of the resonant element and the conductive cover. As a result, a tunable band-pass filter which is inexpensive and of a simple structure and which can change a resonance frequency of a cavity resonator and the coupling amount between cavity resonators easily is realized.
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公开(公告)号：US09793590B2
公开(公告)日：2017-10-17
申请号：US15027506
申请日：2014-10-03
申请人： NEC Corporation
CPC分类号： H01P3/08 , H01P1/203 , H01P1/209 , H01P1/213 , H01P1/2135 , H01P3/085 , H01P3/087 , H01P5/103 , H01P5/107 , H01P11/00
摘要： The first member and the second member include, when a line that connects a first port and a second port is denoted by a reference line, a first groove that has a central point on the reference line and extends in a direction that intersects with the reference line; a second groove that connects one end of the first groove and the first port; a third groove that connects the other end of the first groove and the first port and has a shape that is line symmetrical to the second groove with respect to the reference line; a fourth groove that connects the other end (FN2) of the first groove and the second port; and a fifth groove that connects one end (FN1) of the first groove and the second port and has a shape that is line symmetrical to the fourth groove with respect to the reference line.
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公开(公告)号：US20150280298A1
公开(公告)日：2015-10-01
申请号：US14436009
申请日：2013-10-18
申请人： NEC CORPORATION
CPC分类号： H01P1/2053 , H01P1/205 , H01P1/2056 , H01P1/207 , H01P1/2084 , H01P7/04 , H01P7/06
摘要： The present invention comprises: a conductive chassis having a cavity resonator; a conductive cover to cover the cavity resonator; a resonant element arranged in the cavity resonator, one end of the resonant element being connected with the chassis and the other end being open end; and a movable conductor arranged in a space between the open end of the resonant element and the conductive cover. As a result, a tunable band-pass filter which is inexpensive and of a simple structure and which can change a resonance frequency of a cavity resonator and the coupling amount between cavity resonators easily is realized.
摘要翻译： 本发明包括：具有空腔谐振器的导电底座; 覆盖空腔谐振器的导电盖; 设置在所述空腔谐振器中的谐振元件，所述谐振元件的一端与所述底座连接，所述另一端为开口端; 以及布置在谐振元件的开口端和导电盖之间的空间中的可动导体。 结果，实现了便宜且简单结构并且可以容易地改变空腔谐振器的谐振频率和腔谐振器之间的耦合量的可调谐带通滤波器。
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公开(公告)号：US11139547B2
公开(公告)日：2021-10-05
申请号：US16631544
申请日：2018-06-01
申请人： NEC Corporation
摘要： A tunable bandpass filter (1A) includes a waveguide (11); a plurality of resonators (12) housed in the waveguide (11) and arranged in the lengthwise direction of the waveguide (11); a coupling member (13) disposed between two adjacent resonators (12); a ridge member (14) extending in the lengthwise direction of the waveguide (11) and connected to one end of the coupling member (13); and a dielectric plate (17) extending in the lengthwise direction of the waveguide (11), disposed adjacent to the plurality of resonators (12) in a direction orthogonal to the lengthwise direction of the waveguide (11), and movable in the direction orthogonal to the lengthwise direction of the waveguide (11).
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公开(公告)号：US11114735B2
公开(公告)日：2021-09-07
申请号：US16631522
申请日：2018-06-01
申请人： NEC CORPORATION
摘要： A coaxial waveguide transducer includes: a waveguide having a substantially L shape formed of a first waveguide part and a second waveguide part arranged substantially orthogonal to each other; a stepwise step bend part formed in an outer corner part of an L-shaped bent part of the waveguide; a first conductor and a second conductor arranged in respective inner side walls of the waveguide in such a way that they are extended in a direction in which a central conductor of the coaxial line is extended and are positioned on a plane the same as that where the central conductor is provided; and a third conductor having one end connected to the central conductor and another end connected to one of the first conductor and the second conductor, the third conductor being arranged obliquely with respect to the direction in which the central conductor is extended.
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