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公开(公告)号：KR1019970001058B1
公开(公告)日：1997-01-25
申请号：KR1019960050580
申请日：1996-10-31
Applicant: 한국과학기술연구원
IPC: C04B35/465
CPC classification number: H01B3/12 , C04B35/465
Abstract: Dielectric ceramic composition for high-frequency wave is described which has high quality coefficient(Q value) and dielectric constant, and good temperature coefficient of resonance frequency. The dielectric ceramic composition may be represented as following formula: (1-y)SrTiO3-yLa(Zn1-x/2Mgx/2Ti1/2)O3, where, x is from 0 to0.99 and y is from 0.4 to 0.9. The dielectric composition accordingto the invention has dielectric constant of 28.2 to 60.3, Qxfo(GHz) of25,050 to 71,000, and the temperature coefficient of resonance frequency(TCF) ranging from -55.5 to +83.68 ppm/deg. C, which TCF beingable to be controlled at a range of +-10ppm/deg. C depending on amountof addition of impurities, so that the ceramic composition mayeffectively be used in telecommunication system.
Abstract translation: 描述了具有高质量系数（Q值）和介电常数以及良好的共振频率温度系数的用于高频波的介电陶瓷组合物。 电介质陶瓷组合物可以用下式表示：（1-y）SrTiO3-yLa（Zn1-x / 2Mgx / 2Ti1 / 2）O3，其中x为0〜0.99，y为0.4〜0.9。 根据本发明的电介质组合物的介电常数为28.2〜60.3，Qxfo（GHz）为25,050〜71,000，共振频率（TCF）的温度系数为-55.5〜+83.68ppm /℃。 C，哪个TCF可以控制在+ -10ppm / deg的范围。 取决于添加杂质，使得陶瓷组合物可以有效地用于电信系统中。
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公开(公告)号：KR1019970001057B1
公开(公告)日：1997-01-25
申请号：KR1019960050578
申请日：1996-10-31
Applicant: 한국과학기술연구원
IPC: C04B35/465
Abstract: Dielectric ceramic composition for high-frequency wave is described which has high quality coefficient(Q value) and dielectric constant, and good temperature coefficient of resonance frequency. The dielectric ceramic composition may be represented as following formula: (1-z)(Sr1-yCay)TiO3-yLa(Zn1-x/2Mgx/2Ti1/2)O3, where, x is from0 to 1.0, y is from 0.01 to 0.99 and z is from 0.4 to 0.7. The dielectric composition according to the invention has dielectricconstant of 33.1 to 60.2, Qxfo(GHz) of 25,060 to 66,140, and the temperature coefficient of resonance frequency(TCF) ranging from -53.82to +52.32 ppm/deg. C, which TCF being able to be controlled at a rangeof +-10ppm/deg. C depending on amount of addition of impurities, so thatthe ceramic composition may effectively be used in telecommunication system.
Abstract translation: 描述了具有高质量系数（Q值）和介电常数以及良好的共振频率温度系数的用于高频波的介电陶瓷组合物。 介电陶瓷组合物可以由下式表示：（1-z）（Sr1-yCay）TiO3-yLa（Zn1-x / 2Mgx / 2Ti1 / 2）O3，其中x为0至1.0，y为0.01至 0.99，z为0.4〜0.7。 根据本发明的电介质组合物的介电常数为33.1〜60.2，Qxfo（GHz）为25,060〜66,140，共振频率（TCF）的温度系数为-53.82〜+ 52.32ppm / deg。 C，哪个TCF能够控制在+ -10ppm / deg的范围。 C取决于杂质的添加量，使得陶瓷组合物可以有效地用于电信系统中。
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公开(公告)号：KR1019970000061B1
公开(公告)日：1997-01-04
申请号：KR1019940008605
申请日：1994-04-22
Applicant: 한국과학기술연구원
IPC: H01P11/00
Abstract: The dielectric material comprises (Zr, Sn)TiO4 system, more particularly including 0.3-1.0 wt.% B2O3 as curing agent, and 0.75-3.0 wt.% NiO and 0.1-1.0 wt.% Nd2O3. La2O3 or Ta2O5 can also use as a curing agent, wherein the (Zr, Sn)TiO4 system has the mole ratio formula of 0.72 ZrO4 + 0.3 SnO2 + 1.0 TiO2.
Abstract translation: 电介质材料包括（Zr，Sn）TiO4体系，更具体地包括0.3-1.0重量％的B 2 O 3作为固化剂，以及0.75-3.0重量％的NiO和0.1-1.0重量％的Nd 2 O 3。 La2O3或Ta2O5也可用作固化剂，其中（Zr，Sn）TiO4体系的摩尔比为0.72 ZrO4 + 0.3SnO2 + 1.0TiO3。
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公开(公告)号：KR1019960011351B1
公开(公告)日：1996-08-22
申请号：KR1019930030637
申请日：1993-12-29
Applicant: 한국과학기술연구원
IPC: C04B35/26
Abstract: The sintered ferrite at a low temperature is prepared by mixing and heat-treating Bi2O3 and other oxides to calcined ferrite powder; and adding a liquid forming agent to form a stable phase. Bi2O3 of the liquid forming aid agent and other oxides are mixed to give a composition such that the liquid phase temperature in the phase diagram is in the range of 750 to 850 deg.C. The ferrite can be used for a noise filter and inductor.
Abstract translation: 通过将Bi 2 O 3等氧化物与煅烧铁氧体粉末混合并热处理，制备低温烧结铁氧体; 并加入液体形成剂以形成稳定的相。 将液体形成助剂和其它氧化物的Bi 2 O 3混合，得到相图中的液相温度在750〜850℃的范围内的组成。 铁氧体可用于噪声滤波器和电感器。
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Patent Agency Ranking
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公开(公告)号：KR1019960006242B1
公开(公告)日：1996-05-11
申请号：KR1019930020437
申请日：1993-10-04
Applicant: 한국과학기술연구원
IPC: C04B35/46
CPC classification number: H01B3/12 , C04B35/465 , H01P7/10
Abstract: The dielectric ceramic composition for high frequency is prepared in such a manner that CaTiO3 having (+) temperature coefficient and (Li1/2Nd1/2)TiO3 having (-) temperature coefficient are mixed with mole ratio of 0.1-0.3 of CaTiO3 and 0.9-0.7 of (Li1/2Nd1/2)TiO3.
Abstract translation: 具有（+）温度系数的CaTiO 3和具有（ - ）温度系数的（Li1 / 2Nd1 / 2）TiO3与CaTiO3的摩尔比为0.1-0.3和0.9〜 （Li1 / 2Nd1 / 2）TiO3的0.7。
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公开(公告)号：KR1019960006132A
公开(公告)日：1996-02-23
申请号：KR1019940018289
申请日：1994-07-27
Applicant: 한국과학기술연구원
IPC: H01P11/00
Abstract: 본 발명은 SrTiO
3 -(La
1 -
X Nd
X )(Mg
1/2 Ti
1/2 )O
3 계의 고주파용 유전체 재료에 관한 것이다, 본 발명의 고주파용 유전체 재료는 일반식 (1-y)SrTiO
3 -y(La
1 -
x Nd
x )(Mg
1/2 Ti
1/2 )O
3 으로 표시되는 조성계에서 0.1
x
1.0이고, 0.4
y
0.7의 조성으로서 일반적인 소결체 제료공정에 의해 제조된다. 본 발명의 고주파용 유전체 재료는 유전율이 40이상이며, 유전 손실이 작고, 공진주파수의 온도계수가 Oppm/℃를 중심으로 +와 -쪽으로 필요에 따라 손쉽게 이동시킬 수 있는 장점을 지니고 있다.-
公开(公告)号：KR1019960004279A
公开(公告)日：1996-02-23
申请号：KR1019940015749
申请日：1994-07-01
Applicant: 한국과학기술연구원
IPC: C04B35/462
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