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公开(公告)号：KR1020010100258A
公开(公告)日：2001-11-14
申请号：KR1020000016760
申请日：2000-03-31
Applicant: 한국과학기술연구원
CPC classification number: H01G4/1254 , C04B2235/3255
Abstract: 본 발명은 조성식 (1-x)(Al
1/2 Ta
1/2 )O
2 - x(Mg
1/3 Ta
2/3 )O
2 로 표시되고, x의 범위가 0≤x≤1인 고주파용 유전체 조성물을 제공한다. 이 조성물은 유전율이 8.7 내지 27.1이고, Qxf
O (GHz)가 6500 내지 111230이며, 공진 주파수의 온도 계수(τ
f )의 범위가 -55.2 내지 +51.2 ppm/℃로서 조성의 변화에 따라 τ
f 를 0 ppm/℃로 조절이 가능하여 고주파용 유전체 세라믹스 부품의 재료로서 사용될 수 있는 우수한 특성을 갖는 고주파용 유전체 조성물이다.-
公开(公告)号：KR1020010025942A
公开(公告)日：2001-04-06
申请号：KR1019990037026
申请日：1999-09-02
Applicant: 한국과학기술연구원
IPC: C04B35/468 , H01G4/12
CPC classification number: H01B3/12 , C04B35/4521 , C04B35/465
Abstract: PURPOSE: Provided is a dielectric composition for high frequency resonators, which is characterized in that the TCP of a dielectric resonator is adjustable around to 0ppm/deg.C according to an addition amount of Al2O3, and also it is possible to obtain dielectric composition that has a dielectric constant over 80, especially in case of using a raw material with low purity. CONSTITUTION: The dielectric composition is represented by the below formula: x(Ba0.85Ca0.15-yMgy)O-0.125Nd2O3-zTiO2+vBi2O3+wAl2O3, wherein x, y, z, v, and w have ranges of 0.13≤x≤0.16, 0.01≤y≤0.10, 0.59≤z≤0.62, 10≤v(wt)≤11.5, 0≤w(wt)≤1.5 respectively. In the composition, the TCP deviation value of the dielectric composition is within ±10.
Abstract translation: 目的：提供一种用于高频谐振器的电介质组合物，其特征在于，根据Al 2 O 3的添加量，介电谐振器的TCP可调节为约0ppm /℃，并且还可以获得电介体组成， 具有超过80的介电常数，特别是在使用低纯度原料的情况下。 构成：电介质组成由下式表示：x（Ba0.85Ca0.15-yMgy）O-0.125Nd2O3-zTiO2 + vBi2O3 + wAl2O3，其中x，y，z，v和w的范围为0.13≤x ≤0.16,0.01≤y≤0.10,0.59≤z≤0.62,10≤v（wt）≤11.5,0≤w（wt）≤1.5。 在组合物中，介电组合物的TCP偏差值在±10以内。
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公开(公告)号：KR100471933B1
公开(公告)日：2005-03-08
申请号：KR1020020027735
申请日：2002-05-20
Applicant: 한국과학기술연구원
IPC: C04B35/495 , C04B35/04 , H01B3/12
CPC classification number: C04B35/495 , C04B2235/3206 , C04B2235/3244 , C04B2235/3251 , C04B2235/94 , H05K1/0306
Abstract: 본 발명은 큰 품질계수(Q값)와 유전율을 가지며 또한 공진 주파수의 온도계수가 우수한, (1-x)(Mg
1/3 Ta
2/3 )O
2 -xZrO
2 (0 ≤x ≤0.2)로 표시되는 고주파용 유전체 세라믹 조성물을 제공한다. 본 발명의 고주파용 유전체 세라믹 조성물은 저온에서의 짧은 시간 동안의 소결에 의해서도 큰 품질계수 값을 쉽게 얻을 수 있다.-
公开(公告)号：KR100471932B1
公开(公告)日：2005-03-08
申请号：KR1020020026115
申请日：2002-05-13
Applicant: 한국과학기술연구원
IPC: C04B35/465 , H01B3/12
CPC classification number: H01L23/49894 , C04B35/465 , C04B35/6262 , C04B2235/3203 , C04B2235/3208 , C04B2235/3236 , C04B2235/3251 , C04B2235/3284 , C04B2235/3296 , C04B2235/3409 , C04B2235/3418 , C04B2235/365 , H01L2924/0002 , H01L2924/09701 , H01L2924/00
Abstract: 본 발명은 하기 화학식 1의 조성을 갖는 저온 동시 소성용 마이크로파 유전체 조성물에 관한 것이다.
Ca[(Li
1/3 Nb
2/3 )
1-x Ti
x ]O
3-δ +y(B
2 O
3 ·ZnO·SiO
2 ·PbO)
상기 식에서,
x는 몰비로서 0≤x≤0.3이고,
y는 wt%비로서 0≤y≤15이다.
본 발명에 따른 조성물은 큰 유전율, 품질계수 값 및 안정한 공진 주파수의 온도계수를 가지며, 소결온도가 900℃ 이하로 낮아 은(Ag) 등의 전극과 반응 없이 동시 소성이 가능한 마이크로파용 유전체 LTCC 조성물로서, 현재 상용화되어 있는 800 MHz∼1.9 GHz 대역의 셀룰러, PCS 및 향후 2 GHz 대역의 IMT2000 대역의 적층 칩 필터 및 안테나 등에 요구되는 우수한 특성을 가지고 있어 이에 대한 활용이 기대된다.-
公开(公告)号：KR100415981B1
公开(公告)日：2004-01-24
申请号：KR1020010008360
申请日：2001-02-20
Applicant: 한국과학기술연구원
IPC: C04B35/465 , H01B3/12
Abstract: PURPOSE: Provided is a microwave dielectric ceramic composition of the Ca((Li1/3Nb2/3)1-x Tix)O3-δ system having high dielectric constant, large Q value at high frequency, temperature coefficient of resonant frequency which is close to zero, and low temperature sintering. CONSTITUTION: The dielectric ceramic composition is expressed by a formula of Ca((Li1/3Nb2/3)1-x Tix)O3-δ, wherein x is in the range of x
Abstract translation: 目的：提供Ca（（Li 1/3 Nb 2/3）1-x Tix）O 3-δ微波介电陶瓷组合物; 系统具有高介电常数，高频Q值高，谐振频率温度系数接近零，低温烧结。 构成：电介质陶瓷组合物由式Ca（（Li 1/3 Nb 2/3）1-x Tix）O 3-δ表示，其中x在x≤0.5摩尔的范围内。 将小于2重量％（基于总组成）的B 2 O 3添加到组合物中以降低烧结温度。 该组合物中的材料具有29.7-35.2的介电常数，12000-26000的Qxfo，-16.8℃的宏观温度系数（TCF），0ppm /℃，以及低于1000℃的烧结温度。
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Patent Agency Ranking
公开(公告)号：KR1020030089840A
公开(公告)日：2003-11-28
申请号：KR1020020027735
申请日：2002-05-20
Applicant: 한국과학기술연구원
IPC: C04B35/495 , C04B35/04 , H01B3/12
CPC classification number: C04B35/495 , C04B2235/3206 , C04B2235/3244 , C04B2235/3251 , C04B2235/94 , H05K1/0306
Abstract: PURPOSE: Provided is a microwave dielectric ceramic composition, which has a high quality factor through a short-term sintering at a low temperature, a high dielectric constant and a stable temperature coefficient of resonance frequency. CONSTITUTION: The microwave dielectric ceramic composition is characterized in that it is represented by the formula of (1-x)(Mg1/3Ta2/3)O2-xZrO2, in which x is ranged from 0 to 0.2. The microwave dielectric ceramic composition has a high quality factor of 140,000 GHz or more.
Abstract translation: 目的：提供一种微波介电陶瓷组合物，其通过在低温下的短期烧结，高介电常数和稳定的共振频率温度系数具有高品质因素。 构成：微波介电陶瓷组合物的特征在于其由式（1-x）（Mg1 / 3Ta2 / 3）O2-xZrO2表示，其中x为0至0.2。 微波介电陶瓷组合物具有140,000GHz以上的高品质因数。
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公开(公告)号：KR1020030088184A
公开(公告)日：2003-11-19
申请号：KR1020020026115
申请日：2002-05-13
Applicant: 한국과학기술연구원
IPC: C04B35/465 , H01B3/12
CPC classification number: H01L23/49894 , C04B35/465 , C04B35/6262 , C04B2235/3203 , C04B2235/3208 , C04B2235/3236 , C04B2235/3251 , C04B2235/3284 , C04B2235/3296 , C04B2235/3409 , C04B2235/3418 , C04B2235/365 , H01L2924/0002 , H01L2924/09701 , H01L2924/00
Abstract: PURPOSE: Provided is a low temperature co-fired ceramic(LTCC) composition which has a high dielectric coefficient, an improved quality factor, a stable temperature coefficient of resonance frequency and a low firing temperature. CONSTITUTION: The low temperature co-fired dielectric composition is characterized in that it is represented by the formula of: Ca£(Li1/3Nb2/3)1-xTix|O3-δ+y(B2O3.ZnO.SiO2.PbO), wherein x is a mole ratio ranged from 0 to 0.3 and y is a weight percent ratio ranged from 0 to 15. The composition has a low firing temperature of 900 deg.C or less and is capable of being co-fired with an electrode such as a silver electrode.
Abstract translation: 目的：提供一种具有高介电系数，改善品质因数，稳定的共振频率温度系数和低烧成温度的低温共烧陶瓷（LTCC）组合物。 构成：低温共烧电介质组合物的特征在于其由下式表示：Ca（Li1 / 3Nb2 / 3）1-xTix | O3-δ+ y（B2O3.ZnO.SiO2.PbO）， 其中x是0至0.3的摩尔比，y是0至15的重量百分比。该组合物的低烧成温度为900℃以下，能够与电极共烧 作为银电极。
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公开(公告)号：KR1020020068111A
公开(公告)日：2002-08-27
申请号：KR1020010008360
申请日：2001-02-20
Applicant: 한국과학기술연구원
IPC: C04B35/465 , H01B3/12
CPC classification number: C04B35/465 , C04B2111/00844 , C04B2111/90 , C04B2235/3236 , H01B3/12 , H01G4/1227
Abstract: PURPOSE: Provided is a microwave dielectric ceramic composition of the Ca((Li1/3Nb2/3)1-x Tix)O3-δ system having high dielectric constant, large Q value at high frequency, temperature coefficient of resonant frequency which is close to zero, and low temperature sintering. CONSTITUTION: The dielectric ceramic composition is expressed by a formula of Ca((Li1/3Nb2/3)1-x Tix)O3-δ, wherein x is in the range of x
Abstract translation: 目的：提供介电常数高，高频Q值大，谐振频率温度系数接近于（（Li1 / 3Nb2 / 3）1-x Tix）O3-δ系的微波介质陶瓷组合物 零点和低温烧结。 构成：电介质陶瓷组合物由Ca（（Li1 / 3Nb2 / 3）1-x Tix）O3-δ的式表示，其中x在x <= 0.5摩尔的范围内。 将少于2重量％（基于总组成）的B 2 O 3添加到组合物中以降低烧结温度。 该组合物的介电常数为29.7-35.2，Qxfo为12000-26000，共振频率温度系数（TCF）为-16.8¯0ppm/℃，烧结温度低于1000℃。
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公开(公告)号：KR1020010036365A
公开(公告)日：2001-05-07
申请号：KR1019990043341
申请日：1999-10-08
Applicant: 한국과학기술연구원
IPC: H01B3/10
Abstract: PURPOSE: A dielectric composition for microwave is provided which has high dielectric constant and quality coefficient and shows an excellent temperature coefficient of resonance frequency. CONSTITUTION: The dielectric composition for microwave is represented by the following chemical formula 1: (Pb0.4Ca0.6)((Mg1/3Nb2/3)(1-x)Snx)O3, wherein x is above 1 and less than 0.1. According to the change of Sn content, the composition has a dielectric constant of 45.2-64.7 and Qxf0 of 6970-8150 gigahertz and the temperature coefficient range of the resonance frequency of -3.8-0 parts per million/deg.C.
Abstract translation: 目的：提供一种微波介电组合物，具有很高的介电常数和质量系数，并具有极好的谐振频率温度系数。 构成：微波介电组合物由以下化学式1表示：（Pb0.4Ca0.6）（（Mg1 / 3Nb2 / 3）（1-x）Snx）O3，其中x大于1且小于0.1。 根据Sn含量的变化，组成的介电常数为45.2-64.7，Qxf0为6970-8150千兆赫，共振频率的温度系数范围为-3.8-0百万分/℃。
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