会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 42. 发明授权
    • Dielectric ceramic compositions and dielectric resonators
    • 介电陶瓷组合物和介质谐振器
    • US5700745A
    • 1997-12-23
    • US559135
    • 1995-11-17
    • Kojiro OkuyamaKoji ShimoyamaSyunichiro KawashimaKoichi Kugimiya
    • Kojiro OkuyamaKoji ShimoyamaSyunichiro KawashimaKoichi Kugimiya
    • C04B35/49H01B3/12H01G4/12H01P7/10C04B35/462C04B35/465
    • C04B35/49H01B3/12H01G4/1227H01G4/1245
    • The present invention provides dielectric ceramics with less variation of temperature coefficient at a resonant frequency due to heating history during the sintering of ZrTiO.sub.4 and ZrO.sub.2 --SnO.sub.2 --TiO.sub.2 ceramics, and having a high unloaded Q value and a high dielectric constant, and a temperature coefficient at a resonant frequency which is widely variable as desired, and dielectric resonators using the dielectric ceramics which have a high unloaded Q value and a strong electrode layer. The main components of the dielectric ceramics may be expressed by the formula: xZrO.sub.2 --yTiO.sub.2 --zA.sub.(1+u)/3 B.sub.(2-u)/3 O.sub.2 wherein A denotes at least one component selected from the group (A) consisting of Mg, Co, Zn, Ni and Mn, B denotes at least one component selected from the group (B) consisting of Nb and Ta, and x, y, z and u (x, y and z are molar fractions and u is a value within the range from 0 to 1.90) have the relation of x+y+z=1.0, 0.10.ltoreq.x.ltoreq.0.60, 0.20.ltoreq.y.ltoreq.0.60, 0.01.ltoreq.z.ltoreq.0.70. The main component may include, as accessory components, at least one component selected from the group (C) consisting of Ba, Sr, Ca, Cu, Bi and W at 0.005 to 7.000% by weight of the entire weight of the ceramic.
    • 本发明提供了在ZrTiO 4和ZrO 2 -SnO 2 -TiO 2陶瓷的烧结期间由于加热历史而在谐振频率下的温度系数变化小的介电陶瓷,并且具有高的无载Q值和高介电常数,以及温度系数 在根据需要广泛变化的谐振频率和使用具有高无载Q值和强电极层的电介质陶瓷的介质谐振器。 电介质陶瓷的主要成分可以由下式表示:xZrO2-yTiO2-zA(1 + u)/ 3B(2-u)/ 3O2其中A表示选自由Mg组成的组(A)中的至少一种成分 ,Co,Zn,Ni和Mn中的至少一种,B表示选自由Nb和Ta组成的组(B)中的至少一种,x,y,z和u(x,y和z是摩尔分数,u是 在0至1.90的范围内)具有x + y + z =1.0,0.10≤X≤0.60,0.y≤y≤0.60,0.01≤y≤0.70的关系。 作为辅助成分的主要成分可以包含选自由Ba,Sr,Ca,Cu,Bi和W组成的组(C)中的至少一种,其含量为陶瓷的整个重量的0.005〜7.000重量%。
    • 45. 发明授权
    • Dielectric ceramic compositions and dielectric resonators
    • 介电陶瓷组合物和介质谐振器
    • US5470808A
    • 1995-11-28
    • US325083
    • 1994-10-17
    • Kojiro OkuyamaYoichiro YokotaniKoichi Kugimiya
    • Kojiro OkuyamaYoichiro YokotaniKoichi Kugimiya
    • C04B35/49H01B3/12H01P7/10
    • H01B3/12C04B35/49H01P7/10
    • The invention provides a dielectric ceramic including as the main component a complex oxide formed of both Zr and Ti, at least one component selected from the group (A) consisting of {Mg, Co, Zn, Ni and Mn} and at least one component selected from the group (B) consisting of {Nb and Ta} and a TE.sub.01 .delta.-mode dielectric resonator including the dielectric ceramic, and also the invention provides a dielectric ceramic composition expressed by Formula (a):xZrO.sub.2 --yTiO.sub.2 --zA.sub.(1+w)/3 Nb.sub.(2-w)/3 O.sub.2Formula (a)wherein A denotes at least one component selected from the group (A) consisting of {Mg, Co, Zn, Ni and Mn},x, y and z denote molar fractions ranging from 0.10 to 0.60, 0.20 to 0.60 and 0.01 to 0.70, respectively, and have the relation represented by Formula (a):x+y+z=1 Formula (a)and w denotes a value of 0 to 1.50, and a TE.sub.01 .delta.-mode dielectric resonator in which using the dielectric ceramic.
    • 本发明提供一种电介质陶瓷,其包括由Zr和Ti两者形成的复合氧化物作为主要组分,选自{Mg,Co,Zn,Ni和Mn}组成的组(A)中的至少一种和至少一种组分 选自由{Nb和Ta}组成的组(B)和包括电介质陶瓷的TE01δ模式介电共振器,本发明还提供由式(a)表示的介电陶瓷组合物:xZrO 2 -yTiO 2 -ZA(1 + w)/ 3Nb(2-w)/ 3O2(a)其中A表示选自{Mg,Co,Zn,Ni和Mn}组成的组(A)中的至少一种成分,x,y和z表示摩尔 并且具有由式(a)表示的关系:x + y + z = 1式(a),w表示0至1.50的值,并且a TE01 delta模式介质谐振器,其中使用电介质陶瓷。
    • 49. 发明授权
    • Dielectric ceramic and dielectric device
    • 介质陶瓷和电介质器件
    • US06762142B2
    • 2004-07-13
    • US10251585
    • 2002-09-19
    • Kojiro OkuyamaJunichi KatoHiroshi KagataKenji Iijima
    • Kojiro OkuyamaJunichi KatoHiroshi KagataKenji Iijima
    • C04B35465
    • C04B35/49C04B35/6262C04B2235/3206C04B2235/3249C04B2235/3251C04B2235/3262C04B2235/3275C04B2235/3284C04B2235/604C04B2235/786C04B2235/94C04B2235/96H01P7/10
    • A dielectric ceramic is made of a sintered body of a complex oxide including at least one element selected from the group consisting of Zr, Ti and Mn, at least one element selected from the group consisting of Mg, Zn and Co, and at least one element selected from the group consisting of Nb and Ta, wherein, the complex oxide is represented by a formula xZrO2-yTiO2-zA(1+w)/3B(2−w)/3O2 where ‘A’ in the formula denotes at least one element selected from the group (A) consisting of Mg, Zn and Co, ‘B’ denotes at one element selected from the group (B) consisting of Nb and Ta; x, y, z and w denote values in the respective ranges of 0.20≦x≦0.55, 0.40≦y≦0.55, 0.05≦z≦0.25, and 0≦w≦0.30, and x, y and z have a relationship represented as x+y+z=1; MnO is present in a range of 0.1 mol % to 1.0 mol % to the complex oxide; and an average grain size of the dielectric ceramic is from 10 &mgr;m to 70 &mgr;m, thereby providing a dielectric ceramic that has a high dielectric constant (&egr;r) and an unloaded (Qu) value even in a comparatively low frequency region as a microwave region i.e., in a range of 0.4 GHz to 2.4 GHz and that realizes a desired temperature coefficient (&tgr;f) of a resonant frequency with a high mechanical strength, and thus a dielectric device using the dielectric ceramic is provided.
    • 电介质陶瓷由包含选自Zr,Ti和Mn中的至少一种元素的复合氧化物的烧结体,选自Mg,Zn和Co中的至少一种元素和至少一种 元素选自Nb和Ta,其中复合氧化物由式xZrO2-yTiO2-zA(1 + w)/ 3B(2-w)/ 3O2表示,其中式中的“A”至少表示 选自由Mg,Zn和Co组成的组(A)中的一种元素,'B'表示选自Nb和Ta组成的组(B)中的一种元素; x,y,z和w分别表示0.20 <= x <= 0.55,0.40 <= y <= 0.55,0.05 <= z <= 0.25,0 <= w <0.30的各个范围内的值,x, y和z具有表示为x + y + z = 1的关系; MnO以0.1mol%至1.0mol%的范围存在于复合氧化物中; 并且电介质陶瓷的平均晶粒尺寸为10μm至70μm,从而提供即使在作为微波区域的较低频率区域中也具有高介电常数(ε)和无载(Qu)值的电介质陶瓷,即 ,在0.4GHz至2.4GHz的范围内,并且实现具有高机械强度的谐振频率的期望温度系数(tauf),因此提供了使用电介质陶瓷的电介质器件。