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    • 4. 发明专利
    • Multilayer band pass filter
    • 多层带通滤镜
    • JP2011071921A
    • 2011-04-07
    • JP2009223417
    • 2009-09-28
    • Murata Mfg Co Ltd株式会社村田製作所
    • TANIGUCHI TETSUO
    • H01P1/203H01P1/205
    • H01P1/20345H03H7/09H03H7/1708H03H7/1725H03H7/1775H03H2001/0085
    • PROBLEM TO BE SOLVED: To provide a multilayer band pass filter that is miniaturized and achieves high flexibility and high precision in design of an impedance value.
      SOLUTION: First and second capacitors are configured, respectively, between first and second capacitor electrodes 29 and 30 and a ground electrode 31. Furthermore, a first inductor is constituted of via electrodes 40 and 41 and a first inductor electrode 21, and a second inductor is constituted of via electrodes 42 and 43 and a second inductor electrode 22. Two LC parallel resonators are then constituted of the first inductor, the first capacitor, the second inductor and the second capacitor, and the via electrodes 41 and 43 constituting the inductors of the respective LC parallel resonators are electrically connected via an inter-via bonding electrode 23.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种小型化并实现高灵活性和高阻抗值设计精度的多层带通滤波器。 解决方案:分别在第一和第二电容器电极29和30之间配置第一和第二电容器和接地电极31.此外,第一电感器由通孔电极40和41以及第一电感器电极21构成,以及 第二电感器由通孔电极42和43以及第二电感器电极22构成。然后由第一电感器,第一电容器,第二电感器和第二电容器构成两个LC并联谐振器,构成的通孔电极41和43 各个LC并联谐振器的电感器经由通孔间接合电极23电连接。版权所有:(C)2011,JPO&INPIT
    • 7. 发明专利
    • Multilayer band pass filter
    • 多层带通滤镜
    • JP2007013962A
    • 2007-01-18
    • JP2006175905
    • 2006-06-26
    • Tdk CorpTdk株式会社
    • KUNDU ARUN C
    • H01P1/203H01P1/205
    • H01P1/20345H03H7/0123H03H7/1708H03H7/1725H03H7/1758H03H7/1791H03H2001/0085
    • PROBLEM TO BE SOLVED: To provide a band pass filter for appropriately controlling a coupling between a plurality of resonators. SOLUTION: The band pass filter comprises a first resonator(52), a second resonator (54) and a coupling between the first resonator (52) and the second resonator (54). The coupling may be controlled by at least one of (i) a spacing between the first resonator (52) and the second resonator (54), and (ii) a shunt inductance coupled to the coupling. Typically, an attenuation pole of the band pass filter is controlled by a capacitor (72) of direct coupling. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种用于适当地控制多个谐振器之间的耦合的带通滤波器。 解决方案:带通滤波器包括第一谐振器(52),第二谐振器(54)和第一谐振器(52)和第二谐振器(54)之间的耦合。 耦合可以由(i)第一谐振器(52)和第二谐振器(54)之间的间隔中的至少一个来控​​制,以及(ii)耦合到耦合器的分流电感。 通常,带通滤波器的衰减极通过直接耦合的电容器(72)来控制。 版权所有(C)2007,JPO&INPIT
    • 8. 发明专利
    • Noise suppression circuit
    • 噪音抑制电路
    • JP2006287335A
    • 2006-10-19
    • JP2005101199
    • 2005-03-31
    • Tdk CorpTdk株式会社
    • SUZUKI MITSUNARIHIRABAYASHI NORIYUKISAITO YOSHIHIRO
    • H03H7/09H02M1/12
    • H03H7/427H03H7/09H03H7/1725H03H7/1758
    • PROBLEM TO BE SOLVED: To provide a noise suppression circuit capable of obtaining an excellent attenuation characteristic even when magnetic coupling exists among a plurality of inductors provided on a conductor line.
      SOLUTION: The noise suppression circuit includes the first and second inductors 21, 22 magnetically coupled with each other on the first conductor line 3, the third inductor whose one end is connected to other ends of second capacitors 31, 32 and whose other end is connected to ground, and the fourth and fifth inductors 24, 25 magnetically coupled with each other on the second conductor line 4. The inductance L3 of the third inductor 23 in particular is selected in response to actual values of coupling coefficients k1 to k6 so as to obtain a desired noise attenuation characteristic on the condition that the coupling coefficients k1 to k6 are respectively smaller than the unity by taking into account that the actual values of the coupling coefficients k1 to k6 among the inductors are respectively smaller than the unity.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供即使在设置在导体线路上的多个电感器之间存在磁耦合时也能够获得优异的衰减特性的噪声抑制电路。 解决方案:噪声抑制电路包括在第一导线3上彼此磁耦合的第一和第二电感器21,22,其一端连接到第二电容器31,32的另一端并且其另一端连接的第三电感器 端部连接到地,并且第四和第五电感器24,25在第二导线4上彼此磁耦合。第三电感器23的电感L3特别是响应于耦合系数k1至k6的实际值而被选择 以便通过考虑到电感器中的耦合系数k1至k6的实际值分别小于单位,在耦合系数k1至k6分别小于单位的条件下获得期望的噪声衰减特性。 版权所有(C)2007,JPO&INPIT