利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

11 条记录 (耗时 0.009 秒)

    ELASTIC WAVE BRANCHING FILTER
    1.
    发明公开
    ELASTIC WAVE BRANCHING FILTER 审中-公开
    ELASTISCHES WELLENVERZWEIGUNGSFILTER

    公开(公告)号：EP2773039A1

    公开(公告)日：2014-09-03

    申请号：EP12843590.6

    申请日：2012-09-05

    申请人： Murata Manufacturing Co., Ltd.

    发明人： FUJITA, Shigeyuki

    IPC分类号： H03H9/145 ,  H01L41/09 ,  H01L41/22 ,  H03H9/17 ,  H03H9/54 ,  H03H9/64 ,  H03H9/70 ,  H03H9/72

    CPC分类号： H03H9/725 ,  H03H7/461 ,  H03H9/0004 ,  H03H9/0576 ,  H03H9/6483 ,  H03H9/6489

    摘要： Provided is an elastic wave splitter that is capable of suppressing generation of intermodulation distortion without incurring an increase in size and degradation of insertion loss. An elastic wave splitter (1) has an antenna terminal (3), a transmission terminal (4) and reception terminals (5 and 6). A transmission filter (20) is connected between the antenna terminal (3) and the transmission terminal (4). A reception filter (15) is connected between the antenna terminal (3) and the reception terminals (5 and 6). The transmission filter (20) and the reception filter (15) are each formed of an elastic wave filter. A resonant circuit (34) is connected between the antenna terminal (3) and a ground potential. The resonant circuit (34) includes a surface acoustic wave resonator (35) and a capacitor (C2) connected in series with the surface acoustic wave resonator (35). A resonant frequency of the resonant circuit (34) is positioned in a frequency band of an interference wave that causes intermodulation distortion to be generated.

    摘要翻译： 提供一种能够抑制互调失真的产生而不引起尺寸增大和插入损耗的劣化的弹性波分路器。 弹性分波器（1）具有天线端子（3），发送端子（4）和接收端子（5,6）。 发送滤波器（20）连接在天线端子（3）和发送端子（4）之间。 接收滤波器（15）连接在天线端子（3）和接收端子（5和6）之间。 发送滤波器（20）和接收滤波器（15）各自由弹性波滤波器形成。 谐振电路（34）连接在天线端子（3）和接地电位之间。 谐振电路（34）包括与表面声波谐振器（35）串联连接的声表面波谐振器（35）和电容器（C2）。 谐振电路（34）的谐振频率位于产生互调失真的干扰波的频带中。

    WIDE BAND THROUGH-BODY ULTRASONIC COMMUNICATION SYSTEM
    4.
    发明公开
    WIDE BAND THROUGH-BODY ULTRASONIC COMMUNICATION SYSTEM 审中-公开
    宽带通体超声波通信系统

    公开(公告)号：EP3191233A1

    公开(公告)日：2017-07-19

    申请号：EP15759737.8

    申请日：2015-09-02

    申请人： Koninklijke Philips N.V.

    发明人： OUZOUNOV, Sotir Filipov ,  JOYE, Neil Francis ,  VAN HEESCH, Christianus Martinus

    IPC分类号： B06B1/02 ,  A61N1/372 ,  A61B5/00 ,  G10K11/18

    CPC分类号： H04B11/00 ,  A61B5/0028 ,  A61B8/12 ,  A61N1/37217 ,  A61N1/37288 ,  B06B1/0207 ,  B06B1/0292 ,  G10K11/18 ,  H03H9/0004

    摘要： A wide band through-body communication system communicates data through the body ultrasonically. A MEMS device such as a CMUT transducer is configured to transmit and/or receive ultrasonic data signals within a broad band of operating frequencies. The transducer transmits the ultrasonic data signals through the body to a similarly configured ultrasonic receiver, and/or receives ultrasonic data signals which have been conveyed through the body from a similarly configured ultrasonic transmitter for decoding and processing. In a preferred implementation a CMUT transducer is operated in a collapsed mode.

    摘要翻译： 宽带通体通信系统以超声波方式通过人体传输数据。 诸如CMUT换能器之类的MEMS器件被配置成在宽工作频率带内发送和/或接收超声数据信号。 换能器通过身体将超声波数据信号发送到类似配置的超声波接收器，和/或从类似配置的超声波发送器接收已经通过身体传送的超声波数据信号以用于解码和处理。 在优选的实施方式中，CMUT换能器以折叠模式操作。

    MULTI-MODE THIN FILM ELASTIC WAVE RESONATOR FILTER
    5.
    发明公开
    MULTI-MODE THIN FILM ELASTIC WAVE RESONATOR FILTER 有权
    Dünnschicht-Multimodus-Resonatorfilter mit elastischen Wellen

    公开(公告)号：EP1892832A1

    公开(公告)日：2008-02-27

    申请号：EP06766675.0

    申请日：2006-06-14

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： ONISHI,Keiji c/o Matsushita El. Industrial Co., Ltd. ,  NAKATSUKA, Hiroshi, c/o Matsushita El. Industrial Co., Ltd. ,  ONISHI,Keiji c/o Matsushita El. Industrial Co., Ltd. ,  NAKAMURA, Hiroyuki, c/o Matsushita El. Industrial Co., Ltd.

    IPC分类号： H03H9/56 ,  H01L41/09 ,  H03H9/17 ,  H03H9/70

    CPC分类号： H03H9/0095 ,  H03H9/0004 ,  H03H9/0207 ,  H03H9/02157 ,  H03H9/564

    摘要： In a balanced/unbalanced type coupled FBAR filter (100), an area size of a first lower electrode (102) is generally equal to a total area size of second and third lower electrodes (104, 106) and an area for isolating the second and third lower electrodes (104, 106). An area size of a first upper electrode (103) is generally equal to a total area size of second and third upper electrodes (105, 107) and an area for isolating the second and third upper electrodes (105, 107). The third lower electrode (106) and the second upper electrode (105) are located to face each other, and the third upper electrode (107) and the second lower electrode (104) are located to face each other. A part of the second lower electrode (104) and a part of the second upper electrode (105) are located to face each other.

    摘要翻译： 在平衡/不平衡型耦合FBAR滤波器（100）中，第一下电极（102）的面积大小通常等于第二和第三下电极（104,106）的总面积尺寸，以及用于隔离第二 和第三下电极（104,106）。 第一上部电极（103）的面积大小通常等于第二和第三上部电极（105,107）的总面积尺寸以及用于隔离第二和第三上部电极（105,107）的区域。 第三下电极（106）和第二上电极（105）位于彼此面对，并且第三上电极（107）和第二下电极（104）彼此面对。 第二下部电极（104）的一部分和第二上部电极（105）的一部分位于彼此面对。

    MINIATURE TUNABLE FILTERS
    6.
    发明公开
    MINIATURE TUNABLE FILTERS 审中-公开

    公开(公告)号：EP3403327A1

    公开(公告)日：2018-11-21

    申请号：EP16702001.5

    申请日：2016-01-15

    申请人： Telefonaktiebolaget LM Ericsson (publ.)

    发明人： JIAN, Chunyun

    IPC分类号： H03H9/56 ,  H03H9/60 ,  H03H9/64

    CPC分类号： H03H9/542 ,  H03H9/0004 ,  H03H9/52 ,  H03H9/568 ,  H03H9/605 ,  H03H9/6409 ,  H03H9/6483 ,  H03H2210/012 ,  H03H2210/025 ,  H03H2210/033

    摘要： A tunable filter using acoustic resonators is disclosed. A tunable filter includes a plurality of tunable resonator units (20). Each tunable resonator unit (20) has acoustic wave resonators (12). Each acoustic wave resonator is associated with a different tunable frequency. Each tunable resonator unit also has a first switch (22) configured to select one of the plurality of acoustic wave resonators of the tunable resonator unit at a time. The first switches of the plurality of tunable resonator units are coupled to cooperatively select one acoustic wave resonator in each one of the plurality of tunable resonator units, where a selected acoustic wave resonator in a tunable resonator unit of the plurality of tunable acoustic resonator units is associated with a same tunable frequency response as the other selected acoustic resonators of the others of the plurality of tunable acoustic resonator units. The selection results in an overall tunable frequency response.

    Integrated filter with improved I/O matching and method of fabrication
    7.
    发明公开
    Integrated filter with improved I/O matching and method of fabrication 审中-公开
    集成滤波器电路，输入/输出和制造工艺的改进的阻抗匹配

    公开(公告)号：EP1100193A3

    公开(公告)日：2008-01-23

    申请号：EP00123638.9

    申请日：2000-10-30

    申请人： Freescale Semiconductor, Inc.

    发明人： Gu, Wang-Chang A. ,  Kommrusch, Richard Stephen

    IPC分类号： H03H7/01 ,  H03H9/145 ,  H03H9/00 ,  H03H7/38

    CPC分类号： H03H9/0004 ,  H03H7/01 ,  H03H7/1758 ,  H03H7/1775 ,  H03H7/383 ,  H03H9/0542

    摘要： An integrated filter circuit and a method of fabrication are disclosed, wherein the integrated filter (11) has an input and an output parasitic shunt impedance. Input (17) and output (19) electrical components are coupled to the input (14) and output (15) terminals, respectively, to reduce the input and output parasitic shunt impedances. The input and output electrical components each include one of a coil (17,19), a section of transmission line (27,29), a coil (47,49) and tuneable capacitance (46,48) connected in a series tuned circuit, or a coil (37,39) and tuneable capacitance (26,38) connected in a parallel tuned circuit. The integrated filter includes input and output multilayer ceramic integrated coils (58) which may be positioned so that capacitive coupling between the coils substantially cancels inductive coupling therebetween, and/or an interlayer gridded ground wall is positioned between the input and output coils