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    DIELECTRIC CERAMIC AND DIELECTRIC FILTER UTILIZING SAME
    1.
    发明申请
    DIELECTRIC CERAMIC AND DIELECTRIC FILTER UTILIZING SAME 审中-公开
    电介质陶瓷和电介质过滤器

    公开(公告)号：US20130127568A1

    公开(公告)日：2013-05-23

    申请号：US13813077

    申请日：2011-07-29

    申请人： Seiichirou Hirahara ,  Hajime Toda ,  Toshiyuki Sue ,  Yutaka Mori

    发明人： Seiichirou Hirahara ,  Hajime Toda ,  Toshiyuki Sue ,  Yutaka Mori

    IPC分类号： H01L41/09

    CPC分类号： H01L41/09 ,  C01G23/002 ,  C04B35/462 ,  C04B35/4686 ,  C04B35/478 ,  C04B35/62675 ,  C04B35/63416 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3232 ,  C04B2235/3234 ,  C04B2235/3236 ,  C04B2235/72 ,  C04B2235/77 ,  C04B2235/80 ,  H01B3/12 ,  H01G4/1227

    摘要： A dielectric ceramic includes a main crystal phase containing Ba, Nd and Ti; and a remainder, part of Ti contained in the main crystal phase being substituted with Al, a content of the Al contained in the main crystal phase to a total content of Al in the main crystal phase and the remainder being greater than or equal to 10% on Al2O3 basis. Accordingly, provided is a dielectric ceramic having a high relative permittivity ∈r, a high Qf value and a stable resonant-frequency temperature coefficient τf close to 0 ppm/° C. Also provided is a dielectric filter which is provided with the dielectric ceramic and in which a desired relative permittivity can be obtained with stability and a high Qf value can be obtained, and excellent performance capability can be maintained for a long period of time with stability in a place where wide temperature variations are encountered.

    摘要翻译： 电介质陶瓷包括含有Ba，Nd和Ti的主晶相; 剩下的是，主晶相中包含的部分Ti被Al取代，主晶相中包含的Al的含量相对于主晶相中的Al的总含量，余量大于或等于10 ％Al2O3。 因此，提供了一种具有高相对介电常数Er，高Qf值和接近0ppm /℃的稳定谐振频率温度系数tauf的电介质陶瓷。还提供了一种介质滤波器，其设置有电介质陶瓷，并且 可以稳定地获得期望的相对介电常数，并且可以获得高Qf值，并且在遇到宽温度变化的地方具有稳定性的情况下可以长期保持优异的性能。

    Process for the production of low-temperature firing ceramic compositions
    5.
    发明授权
    Process for the production of low-temperature firing ceramic compositions 有权
    生产低温焙烧陶瓷组合物的方法

    公开(公告)号：US06270716B1

    公开(公告)日：2001-08-07

    申请号：US09451736

    申请日：1999-11-30

    申请人： Yasutaka Sugimoto

    发明人： Yasutaka Sugimoto

    IPC分类号： C04B3332

    CPC分类号： C04B35/462 ,  C04B35/4686

    摘要： A process for the production of dielectric porcelain composition includes: a first step of admixing Bi2O3 and CuO with a BaO—TiO2—ReO{fraction (3/2)} main material, wherein Re is a lanthanoid element, to give a material mixture; a second step of calcining the material mixture at a temperature of 950° C. or higher; a third step of milling the calcined material mixture to a mean particle diameter of about 2.0 &mgr;m or less; a fourth step of admixing a B2O3—SiO2 glass component and CuO with the milled material mixture to give a material for a dielectric porcelain composition; and a fifth step of forming the material into a target shape and firing the shaped material at a temperature of 1000° C. or lower. The obtained dielectric porcelain composition is sinterable at low temperatures and has a high specific dielectric constant and Q-value and a satisfactory thermostability.

    摘要翻译： 制备电介质瓷组合物的方法包括：将Bi 2 O 3和CuO与BaO-TiO 2 -ReO（级分（3/2）}主要材料混合的第一步骤，其中Re是镧系元素，得到材料混合物; 在950℃以上的温度下煅烧材料混合物的第二步骤; 将煅烧材料混合物研磨至平均粒径为约2.0μm或更小的第三步骤; 将B2O3-SiO2玻璃组分和CuO与研磨的材料混合物混合以得到电介质瓷组合物的材料的第四步骤; 以及将材料形成为目标形状并在1000℃以下的温度下烧成成形材料的第五工序。 所获得的电介质瓷组合物在低温下是可烧结的并且具有高比介电常数和Q值以及令人满意的热稳定性。

    Dielectric ceramic composition and ceramic electronic parts
    6.
    发明授权
    Dielectric ceramic composition and ceramic electronic parts 有权
    介电陶瓷组合物和陶瓷电子部件

    公开(公告)号：US06258450B1

    公开(公告)日：2001-07-10

    申请号：US09357909

    申请日：1999-07-21

    申请人： Nobuhiro Sasaki ,  Yoshinao Takahashi ,  Katsuyuki Horie

    发明人： Nobuhiro Sasaki ,  Yoshinao Takahashi ,  Katsuyuki Horie

    IPC分类号： B32B300

    CPC分类号： C04B35/4686 ,  H01B3/12 ,  H01G4/1227 ,  Y10T428/24926

    摘要： The dielectric ceramic composition is composed of a sintered body of ceramic particles containing Ba2Ti5O11 as a major component. The ceramic particles may contain Ag in the form of solid solution at the rate of 0.2% to 3.0% by mole. the ceramic particles may further contain Ba2TiSi2O8 so the BaTi5O11/Ba2TiSi2O8 ratio is 1.5 to 9 BaTi5O11 to 1 Ba2TiSi2O8. The dielectric ceramic composition can be sintered at a low enough temperature to enable a highly conductive metal such as Ag, Cu or the like to be burned and sintered integrally.

    摘要翻译： 电介质陶瓷组合物由以Ba2Ti5O11为主要成分的陶瓷粒子的烧结体构成。 陶瓷颗粒可以以0.2％至3.0％摩尔的比例含有固溶体形式的Ag。 陶瓷颗粒可能还含有Ba2TiSi2O8，因此BaTi5O11 / Ba2TiSi2O8的比例为1.5〜9 BaTi5O11〜1 Ba2TiSi2O8。 电介质陶瓷组合物可以在足够低的温度下烧结以使诸如Ag，Cu等的高导电性金属燃烧并整体烧结。

    Dielectric ceramic compositions
    7.
    发明授权
    Dielectric ceramic compositions 失效
    介电陶瓷组合物

    公开(公告)号：US5512524A

    公开(公告)日：1996-04-30

    申请号：US366396

    申请日：1994-12-29

    申请人： Taki Negas ,  Glenn J. Yeager

    发明人： Taki Negas ,  Glenn J. Yeager

    IPC分类号： C04B35/468 ,  H01G4/12 ,  C04B35/46

    CPC分类号： H01G4/1227 ,  C04B35/4686

    摘要： The present invention is directed to a ceramic composition comprising at least three of the four phases BaTi.sub.4 O.sub.9, Ba.sub.2 Ti.sub.9, BaZn.sub.2 Ti.sub.4 O.sub.11 and Ba.sub.3 Nb.sub.4 Ti.sub.4 O.sub.21 (i.e., the phases BT.sub.4 ss, BZ.sub.2 T.sub.9 ss BZ.sub.2 T.sub.4 and BNbT). The ceramic composition may further comprise the phase Ba.sub.3 Ta.sub.4 Ti.sub.4 O.sub.21 (BTaT). The ceramic compositions have an excellent combination of electrical characteristics including Q value at the frequencies of interest for dielectric resonators, the dielectric constant and the T.sub.f value and are well adapted for use as electrical components in equipment operating at microwave frequencies such cellular communications equipment.

    摘要翻译： 本发明涉及包含四相BaTiO4，Ba2Ti9，BaZn2Ti4O11和Ba3Nb4Ti4O21中的至少三种（即相BT4ss，BZ2T9ss BZ2T4和BNbT）的陶瓷组合物。 陶瓷组合物还可以包括相Ba3Ta4Ti4O21（BTaT）。 陶瓷组合物具有包括介电谐振器感兴趣的频率下的Q值，介电常数和Tf值的电特性的优异组合，并且很好地适用于在微波频率下操作的设备中的电气部件。

    Ceramic composition for microwave dielectric
    8.
    发明授权
    Ceramic composition for microwave dielectric 失效
    微波介电陶瓷组成

    公开(公告)号：US5238887A

    公开(公告)日：1993-08-24

    申请号：US907640

    申请日：1992-07-02

    申请人： Tokiomi Kato ,  Hirofumi Ozeki

    发明人： Tokiomi Kato ,  Hirofumi Ozeki

    IPC分类号： C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01P7/10 ,  H05B6/64

    CPC分类号： C04B35/4686 ,  H01B3/12 ,  H05B6/64

    摘要： Disclosed herein is a ceramic composition which gives a microwave dielectric having a permittivity and unloaded Q in a practical range and a small temperature coefficient (.tau.f) in the neighborhood of zero of resonance frequency owing to the controlled amount of ZnO and Ta.sub.2 O.sub.5 added. The .tau.f value may be positive or negative in the neighborhood of zero according to need. The ceramic composition comprises a principal component represented by (BaO-3.7TiO.sub.2).xZnO, where x is in the range of 15.ltoreq.x.ltoreq.17 wt % and a secondary component containing 2-6 wt % Ta.sub.2 O.sub.5 and not more than 1 wt % MnO.sub.2 based on the amount of the principal component. The ceramic composition may also contain BaO-3.8TiO.sub.2, 12-16 wt % ZnO, and 2-6 wt % Ta.sub.2 O.sub.5, or contain BaO-3.6TiO.sub.2, 17-19 wt % ZnO, and 2-6 wt % Ta.sub.2 O.sub.5.

    摘要翻译： 本文公开了一种陶瓷组合物，其在实际范围内提供具有介电常数和无载Q的微波电介质，并且由于加入的ZnO和Ta 2 O 5的受控量，共振频率零附近的温度系数（τf）小。 根据需要，τf值可以在零附近为正或负。 陶瓷组合物包含由（BaO-3.7TiO 2）xZnO表示的主要成分，其中x在15≤x≤17重量％的范围内，次要组分含有2-6重量％的Ta 2 O 5，而不是更多 基于主成分量的1重量％以下的MnO 2。 该陶瓷组合物还可含有BaO-3.8TiO 2，12-16wt％ZnO和2-6wt％Ta 2 O 5，或含有BaO-3.6TiO 2，17-19wt％ZnO和2-6wt％Ta 2 O 5。

    Method for producing a material for use in a microwave dielectric resonator
    10.
    发明授权
    Method for producing a material for use in a microwave dielectric resonator 失效
    用于制造用于微波介质谐振器的材料的方法

    公开(公告)号：US4960739A

    公开(公告)日：1990-10-02

    申请号：US478715

    申请日：1990-02-08

    申请人： Keisuke Kageyama

    发明人： Keisuke Kageyama

    IPC分类号： C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01P7/10

    CPC分类号： C04B35/4686

    摘要： A dielectric material for use in a microwave resonator comprises 78.1 mol % of TiO.sub.2, 15.7 to 17.8 mol % of BaO, 4.00 ml % of SnO.sub.2 and at least one of 0.1 to 1.0 mol % of SrO and 0.1 to 1.2 mol % of CaO.

    摘要翻译： 用于微波谐振器的电介质材料包括78.1mol％的TiO 2，15.7至17.8mol％的BaO，4.00ml％的SnO 2和至少一个0.1至1.0mol％的SrO和0.1至1.2mol％的CaO。