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公开(公告)号：US09614494B2
公开(公告)日：2017-04-04
申请号：US14763494
申请日：2013-03-15
申请人： EPCOS AG
发明人： Ralph Durner , Ravi Kiran Challa , Wolfgang Till , Aleh Loseu
IPC分类号： H03H7/38 , H03H9/205 , H03H9/02 , H03H9/54 , H03H9/60 , H03H9/64 , H01F38/14 , H03H9/70 , H03H9/72
CPC分类号： H03H9/205 , H01F38/14 , H01F2038/146 , H03H9/02015 , H03H9/02543 , H03H9/542 , H03H9/605 , H03H9/6483 , H03H9/706 , H03H9/725
摘要： A reactance filter includes a series branch that includes a number of series impedance elements that are coupled in series and a number of parallel branches each having a parallel impedance element coupled to a respective node of the series branch. Each impedance element includes a resonator that works with acoustic waves. The resonators in the series branch include a first piezoelectric material and the resonators in the parallel branches include a second piezoelectric material that is different than the first piezoelectric material.
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公开(公告)号：US20170093373A1
公开(公告)日：2017-03-30
申请号：US15375803
申请日：2016-12-12
发明人： Joji Fujiwara , Toru Jibu , Tomoya Komatsu , Hiroyuki Nakamura , Tetsuya Tsurunari , Kazunori Nishimura
CPC分类号： H03H9/6413 , H03H9/0028 , H03H9/0085 , H03H9/542 , H03H9/6433 , H03H9/6483 , H03H9/725 , H04B1/40
摘要： A high-frequency filter including first and second signal terminals, a filter circuit having a passband and a stopband and being connected between the first signal terminal and the second signal terminal, and an additional circuit connected in parallel with the filter circuit between the first signal terminal and the second signal terminal. The filter circuit is configured to provide a first output signal responsive to receipt of an input signal. The additional circuit has an attenuation band within the stopband, and is configured to provide a second output signal responsive to receiving the input signal, the first and second output signals having phase components opposite to each other in the attenuation band.
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公开(公告)号：US20170063329A1
公开(公告)日：2017-03-02
申请号：US14835679
申请日：2015-08-25
CPC分类号： H03H9/02574 , H03H3/08 , H03H9/02818 , H03H9/02866 , H03H9/6483
摘要： A surface acoustic wave (SAW) resonator includes a piezoelectric layer disposed over a substrate, and a plurality of electrodes disposed over the first surface of the piezoelectric layer. A layer is disposed between the substrate and the piezoelectric layer. A surface of the layer has a smoothness sufficient to foster atomic bonding between layer and the piezoelectric layer. A plurality of features provided on a surface of the substrate reflects acoustic waves and reduce the incidence of spurious modes in the piezoelectric layer.
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公开(公告)号：US09577606B2
公开(公告)日：2017-02-21
申请号：US14466885
申请日：2014-08-22
申请人： EPCOS AG
发明人： Andreas Link , Bernhard Bader
CPC分类号： H03H9/706 , H01Q1/50 , H03H7/38 , H03H9/547 , H03H9/605 , H03H9/6409 , H03H9/6483 , H03H9/725
摘要： A duplexer includes an antenna terminal, a transmission amplifier terminal and a reception amplifier terminal. The transmission amplifier terminal is coupled to the antenna terminal via a transmission filter. The reception amplifier terminal is coupled to a reception filter and the reception filter is coupled to the antenna terminal via a band-stop filter.
摘要翻译： 双工器包括天线端子，发送放大器端子和接收放大器端子。 发送放大器端子经由发送滤波器耦合到天线端子。 接收放大器端子耦合到接收滤波器，并且接收滤波器经由带阻滤波器耦合到天线端子。
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公开(公告)号：US20170005638A1
公开(公告)日：2017-01-05
申请号：US15265912
申请日：2016-09-15
发明人： Masanori OTAGAWA , Syunsuke KIDO , Hideki IWAMOTO
CPC分类号： H03H9/6489 , H03H9/02574 , H03H9/02818 , H03H9/54 , H03H9/6483 , H03H9/725
摘要： A SAW filter device defines a filter including a high acoustic velocity member, a low acoustic velocity film, a piezoelectric film, and an IDT electrode are stacked in this order. A comb capacitive electrode electrically coupled to the filter is provided on the piezoelectric film. Where λc is a wavelength determined by an electrode finger pitch of the comb capacitive electrode, and, among modes of an elastic wave generated by the comb capacitive electrode, VC-(P+SV) is an acoustic velocity of a P+SV wave, VC-SH is an acoustic velocity of a SH wave, and VC-HO is an acoustic velocity of, out of higher-order modes of a SH wave, a higher-order mode at the lowest frequency side, VC-(P+SV) fF-H, or VC-SH/λC fF-H.
摘要翻译： 定义了包括高声速构件，低声速膜，压电膜和IDT电极的SAW滤波器装置。 电耦合到滤波器的梳状电容电极设置在压电膜上。 其中λc是由梳状电容电极的电极指间距决定的波长，并且在由梳状电容电极产生的弹性波的模式中，VC-（P + SV）是P + SV波的声速， VC-SH是SH波的声速，VC-HO是在SH波的高阶模式中在最低频率侧的高阶模式的声速，VC-（P + SV ）
fF-H或VC- SH /λC fF-H。 -
公开(公告)号：US20160380615A1
公开(公告)日：2016-12-29
申请号：US15099320
申请日：2016-04-14
发明人： Yuki ENDO
摘要： A ladder-type filter includes: one or more series resonators connected in series between an input terminal and an output terminal; one or more parallel resonators connected in parallel between the input terminal and the output terminal; divided parallel resonators formed by serially dividing at least one parallel resonator of the one or more parallel resonators; and an inductor of which a first end is coupled to a first node located in a path from the input terminal to the output terminal through the one or more series resonators, and of which a second end is coupled to a second node located between the divided parallel resonators.
摘要翻译： 梯型滤波器包括：串联连接在输入端和输出端之间的一个或多个串联谐振器; 在输入端子和输出端子之间并联连接的一个或多个并联谐振器; 通过串联地划分所述一个或多个并联谐振器的至少一个并联谐振器而形成的分开的并联谐振器; 以及电感器，其第一端耦合到位于通过所述一个或多个串联谐振器从所述输入端子到所述输出端子的路径中的第一节点，并且其中第二端耦合到位于所述分开的所述第二节点之间的第二节点 并联谐振器。
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公开(公告)号：US09524360B2
公开(公告)日：2016-12-20
申请号：US14945736
申请日：2015-11-19
申请人： RESONANT INC.
发明人： Patrick J. Turner , Richard N. Silver , Balam Quitze Andres Willemsen Cortes , Kurt F. Raihn , Neal O. Fenzi , Robert B. Hammond
CPC分类号： G06F17/505 , G06F17/5063 , H03H3/00 , H03H9/465 , H03H9/542 , H03H9/64 , H03H9/6483
摘要： A method of designing an acoustic microwave filter in accordance with frequency response requirements. The method comprises selecting an initial filter circuit structure including a plurality of circuit elements comprising at least one resonant element and at least one other reactive circuit element, selecting circuit response variables based on the frequency response requirements, selecting a value for each of the circuit elements based on the selected circuit response variables to create an initial filter circuit design, transforming the resonant element(s) and the other reactive circuit element(s) of the initial filter circuit design into at least one acoustic resonator model to create an acoustic filter circuit design, adding parasitic effects to the acoustic filter circuit design to create a pre-optimized filter circuit design, optimizing the pre-optimized filter circuit design to create a final filter circuit design, and constructing the acoustic microwave filter based on the final filter circuit design.
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公开(公告)号：US09520857B2
公开(公告)日：2016-12-13
申请号：US14969222
申请日：2015-12-15
发明人： Joji Fujiwara , Toru Jibu , Tomoya Komatsu , Hiroyuki Nakamura , Tetsuya Tsurunari , Kazunori Nishimura
CPC分类号： H03H9/6413 , H03H9/0028 , H03H9/0085 , H03H9/542 , H03H9/6433 , H03H9/6483 , H03H9/725 , H04B1/40
摘要： An electronic device includes a main circuit connected between an input terminal and an output terminal, and an auxiliary circuit connected in parallel to the main circuit between the input terminal and the output terminal. The main circuit includes a filter having a first passband and a stopband. The auxiliary circuit has a passing characteristic that allows a signal having a frequency in a certain frequency band inside the stopband to pass through the auxiliary circuit. The main circuit is configured to output a main signal in response to an input signal. The auxiliary circuit is configured to output an auxiliary signal in response to the input signal. The main signal and the auxiliary signal contain phase components opposite to each other in the certain frequency band inside the stopband. This electronic device has an attenuation amount in the stopband.
摘要翻译： 电子设备包括连接在输入端子和输出端子之间的主电路以及与输入端子和输出端子之间的主电路并联连接的辅助电路。 主电路包括具有第一通带和阻带的滤波器。 辅助电路具有允许在阻带内部的某一频带中的频率的信号通过辅助电路的通过特性。 主电路被配置为响应于输入信号输出主信号。 辅助电路被配置为响应于输入信号输出辅助信号。 主信号和辅助信号在阻带内的某个频带中包含彼此相反的相位分量。 该电子设备在阻带中具有衰减量。
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公开(公告)号：US20160359470A1
公开(公告)日：2016-12-08
申请号：US15166631
申请日：2016-05-27
发明人： Eiji KUWAHARA , Yuki ENDO
CPC分类号： H03H9/542 , H03H7/1775 , H03H7/1783 , H03H9/0566 , H03H9/568 , H03H9/605 , H03H9/6483 , H03H9/706 , H03H9/725
摘要： A ladder-type filter includes: one or more series resonators connected in series between an input terminal and an output terminal; two or more parallel resonators connected in parallel between the input terminal and the output terminal; a first inductor connected in series between at least two nodes, each of the at least two nodes being located between a corresponding parallel resonator of at least two parallel resonators of the two or more parallel resonators and ground; and a first capacitor connected in series with the first inductor between the at least two nodes.
摘要翻译： 梯型滤波器包括：串联连接在输入端和输出端之间的一个或多个串联谐振器; 在输入端子和输出端子之间并联连接的两个或更多个并联谐振器; 串联连接在至少两个节点之间的第一电感器，所述至少两个节点中的每一个位于两个或更多个并联谐振器的至少两个并联谐振器的对应并联谐振器和地之间; 以及在所述至少两个节点之间与所述第一电感器串联连接的第一电容器。
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90.发明申请TUNABLE ELECTROACOUSTIC RF FILTER WITH IMPROVED ELECTRIC PROPERTIES AND METHOD FOR OPERATING SUCH A FILTER 审中-公开具有改进的电气特性的电容式电动射频滤波器和用于操作这种过滤器的方法公开(公告)号：US20160359469A1
公开(公告)日：2016-12-08
申请号：US15117390
申请日：2014-05-30
申请人： EPCOS AG
发明人： Juha Ellä , Edgar Schmidhammer
CPC分类号： H03H9/46 , H03F3/20 , H03F2200/294 , H03H7/38 , H03H9/542 , H03H9/568 , H03H9/64 , H03H9/6483 , H03H9/70 , H03H2009/02165 , H03H2210/025
摘要： The invention specifies a tunable RF filter which may operate using electroacoustic components and provides good electrical properties despite having a wide tuning range. For this purpose, the RF filter comprises a tunable filter core (AFK) having electroacoustic (EAK) and detunable (AKE) filter elements, and impedance restoration circuits (IWS1, IWS2) for compensating for an impedance change by tuning the filter core.
摘要翻译： 本发明规定了可调谐RF滤波器，其可以使用电声部件进行操作，并且尽管具有宽的调谐范围，但是其提供良好的电气特性。 为此，RF滤波器包括具有电声（EAK）和不可恢复（AKE）滤波器元件的可调谐滤波器芯（AFK）和用于通过调谐滤波器芯来补偿阻抗变化的阻抗恢复电路（IWS1，IWS2）。
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