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公开(公告)号：EP3883050A1
公开(公告)日：2021-09-22
申请号：EP18944687.5
申请日：2018-12-26
发明人： LIANG, Dan , ZHANG, Xiaofeng , CUI, Zheng
摘要： Embodiments of this application provide a dielectric filter, a duplexer, and a communications device, relate to communications device components, and intend to resolve problems of a great difficulty in matching between different filters and high layout space consumption that are caused by addition of a low-pass filter cascaded with the dielectric filter. The dielectric filter includes a dielectric body, and a wideband filtering structure and a narrowband filtering structure that are disposed in the dielectric body. The wideband filtering structure includes a groove and at least one first resonator. The groove is disposed on a first surface of the dielectric body and is configured to adjust a frequency position of a passband of the wideband filtering structure. The first resonator includes a through hole and an open loop. The through hole penetrates the bottom of the groove and a second surface of the dielectric body. The open loop is located on a bottom surface of the groove and is disposed around an opening of the through hole. The narrowband filtering structure includes at least one second resonator, and the second resonator includes a blind hole disposed on the second surface of the dielectric body. The first surface and the second surface of the dielectric body are disposed oppositely.
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公开(公告)号：EP3200273A4
公开(公告)日：2018-05-23
申请号：EP15844059
申请日：2015-09-16
申请人： KYOCERA CORP
CPC分类号： H01P1/2002 , H01P1/2053 , H01P1/2084 , H01P7/04 , H01P7/10
摘要： There are provided a compact resonator having excellent electrical characteristics, and a filter and a communication device that employ the resonator. A resonator includes a shield conductor (10), a columnar body (21), and a first dielectric body (12). The shield conductor (10) includes a first conductor (13) located on a negative z-direction side and a second conductor (14) located on a positive z-direction side, and has a cavity (19) therein. The columnar body (21) is composed of a dielectric body or a conductor and has a columnar shape, and is placed inside the cavity (19), an end in the negative z-direction thereof being joined to the first conductor (13), an interval being provided between an end in the positive z-direction of the columnar body and the shield conductor (10). The first dielectric body (12) is placed inside the cavity (19), an end in the positive z-direction thereof being joined to the second conductor (14), an interval being provided between an end in the negative z-direction of the first dielectric body and the shield conductor (10), the first dielectric body surrounding the columnar body (21) so as to be apart from each other.
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44.发明授权COAXIAL RESONATOR, AND DIELECTRIC FILTER, WIRELESS COMMUNICATION MODULE, AND WIRELESS COMMUNICATION DEVICE USING THE SAME 有权同轴谐振器和电介质滤波器，无线通信模块，以及使用该无线通信设备的无线通信设备
公开(公告)号：EP2495804B1
公开(公告)日：2018-01-10
申请号：EP10826462.3
申请日：2010-09-29
申请人： Kyocera Corporation
CPC分类号： H01P1/2053 , H01P1/2056 , H01P7/04
摘要： [Problem] There is provided a coaxial resonator having a high Q value in the first resonant mode and a wide resonance frequency gap between the first resonant mode and the second resonant mode, as well as a dielectric filter, a wireless communication module, and a wireless communication device employing the same. [Solution] A coaxial resonator includes a dielectric block (10); a first inner conductor (13) disposed in an inner surface of a first through hole (11) which extends from a first main surface of the dielectric block to an opposite second main surface thereof, the first inner conductor (13) being connected to a reference potential at one side thereof ; and an outer conductor (15) disposed over side surfaces of the dielectric block (10), the outer conductor surrounding the first inner conductor (13), the outer conductor (15) being connected to the reference potential. There is a low-dielectric-constant portion in a location between the first inner conductor (13) and the outer conductor (15). The low-dielectric-constant portion surrounds a periphery of the first inner conductor (13) and is lower in dielectric constant than the dielectric block (10). A coaxial resonator having a high Q value in the first resonant mode and a wide resonance frequency gap between the first resonant mode and the second resonant mode can be obtained.
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45.发明授权
公开(公告)号：EP1505683B1
公开(公告)日：2016-10-05
申请号：EP04018586.0
申请日：2004-08-05
申请人： TDK Corporation
发明人： Itakura, Masami , Goi, Tomoyuki , Adachi, Takuya
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46.发明公开RF POWER COMBINER FUNCTIONING AS HIGHER-ORDER HARMONICS FILTER 审中-公开RF-LEISTUNGSKOMBINATOR ALS OBERWELLENFILTERHÖHERERORDNUNG
公开(公告)号：EP2878036A1
公开(公告)日：2015-06-03
申请号：EP13730074.5
申请日：2013-02-18
发明人： HEID, Oliver , HUGHES, Timothy , POLIKHOV, Stepan Alexandrovich , SMIRNOV, Alexander Yourievich
摘要： An RF power combiner functioning as a higher-order harmonics filter comprises: at least one pair of coaxially arranged disc-shaped metal conductors, at least one of the conductors having a central axial opening to accommodate a waveguide is provided. Facing surfaces of the disk-shaped metal conductors are shaped symmetrically with respect to the plane of symmetry of the disk-shaped metal conductors to form a plurality of consecutive, radially communicating concentric cavities having isosceles trapezoids with different bases in section. The smaller base of each trapezoid disposed closer to the central axis. The number of the concentric cavities is (2 k+1), where K is the number of signal harmonics being filtered.
摘要翻译： 用作高次谐波滤波器的RF功率组合器包括：至少一对同轴布置的盘状金属导体，至少一个导体具有用于容纳波导的中心轴向开口。 盘状金属导体的面对面相对于圆盘形金属导体的对称平面对称地形成多个连续的，径向连通的同心腔，其具有截面不同基部的等腰梯形。 每个梯形的较小基部设置成更靠近中心轴线。 同心腔的数量为（2 k + 1），其中K是被滤波的信号谐波数。
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47.发明公开
公开(公告)号：EP2624361A4
公开(公告)日：2014-07-09
申请号：EP11829292
申请日：2011-09-29
申请人： KYOCERA CORP
CPC分类号： H01P7/04 , H01P1/2053 , H01P1/2056
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公开(公告)号：EP1363351B1
公开(公告)日：2008-08-06
申请号：EP02715839.3
申请日：2002-01-21
CPC分类号： H01P1/20318 , H01P1/2084 , H01P1/2135 , H01P1/2138 , H01P7/10
摘要： A high frequency circuit element comprising a dielectric member (1), a shielding conductor (2) surrounding the dielectric member (1), support member (3) for fixing/supporting the dielectric member (1), and a pair of transmission lines (4) consisting of micro-strip lines. A transmission line (4) comprises a substrate (6) consisting of a dielectric, a strip conductor (5) and a grounding conductor layer (9). The tip end of the strip conductor (5) faces a part of the dielectric member (1) to function as a coupling probe for output coupling or input coupling. The transmission line (4) includes a strip line, micro-strip line, and a coplanar line, and suffers little loss when connected to a circuit board.
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公开(公告)号：EP1497888A1
公开(公告)日：2005-01-19
申请号：EP03713603.3
申请日：2003-02-21
申请人： CTS Corporation
CPC分类号： H01P1/2136 , H01P1/205
摘要： A duplexing filter suitable for use in a mobile communication system. The filter has a core of dielectric material with several through holes that define resonators. The core has metallized surfaces except for the top surface. Several metallized resonator pads surround each of the through holes on the top surface. A metallized serpentine region extends from one or more of the resonator pads toward a side surface of the core. The metallized serpentine region causes attentuation of a third harmonic frequency.
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公开(公告)号：EP1347572A4
公开(公告)日：2004-11-03
申请号：EP01272810
申请日：2001-12-14
CPC分类号： H03F3/60 , H01P1/2007 , H03H7/0123 , H03H7/1758 , H03H7/1766 , H03H7/1791 , H03H7/46
摘要： A bias circuit applicable to a high-frequency amplifier used in a communication device such as a portable telephone and adapted for reducing the harmonic distortion with a simple structure. A high-frequency amplifier of high-efficiency and small current consumption in which the voltage drop caused at the bias circuit is reduced is also disclosed. The high-frequency amplifier is composed of an amplifier circuit, an output-side matching circuit, and a bias circuit. In this bias circuit, one end of a parallel circuit composed of a first transmission line and a first capacitor is connected between the amplifier circuit and the output-side matching circuit. The other end of the parallel circuit is connected to a power supply and grounded through a second capacitor. Thus, the bias circuit is kept open in a frequency band of the signal amplified by the amplifier circuit and short-circuited in a desired frequency band, thereby reducing the high-frequency distortion without using any low-pass filter.
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