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1. 发明授权

US6071555A Ferroelectric thin film composites made by metalorganic decomposition 有权
标题翻译：铁电薄膜复合材料由金属有机物分解制成
公开(公告)号：US6071555A
公开(公告)日：2000-06-06
申请号：US192619
申请日：1998-11-05
申请人： Somnath Sengupta , Steven Stowell , Louise Sengupta , Pooran C. Joshi , Sasangan Ramanathan , Seshu B. Desu
发明人： Somnath Sengupta , Steven Stowell , Louise Sengupta , Pooran C. Joshi , Sasangan Ramanathan , Seshu B. Desu
IPC分类号： C04B35/468 , C04B35/47 , C04B35/622 , C04B41/50 , C23C18/12 , H01L21/314 , H01L21/316 , B05D3/02 , B05D3/12
CPC分类号： C23C18/1216 , C04B35/468 , C04B35/47 , C04B35/62222 , C04B41/009 , C04B41/5041 , H01L21/31691
摘要： Thin films of ferroelectric composite material comprising barium strontium titanate (BSTO) combined with magnesium oxide additive are produced by metalorganic decomposition. The barium strontium titanate magnesium oxide ferroelectric composite comprises Ba.sub.1-x Sr.sub.x TiO.sub.3 /MgO, wherein x is greater than 0.0 but less than or equal to 0.75 and preferably is 0.4, and wherein the weight ratio of BSTO to magnesium oxide may range from 99 to 40 weight percent BSTO to 1 to 60 weight percent magnesium oxide. These films have desirable electronic properties and may have application to both active microwave and dynamic random access memory devices, including low dielectric constant, low loss factor, high tunability, and high resistivity. The films produced are uniformly thick and impurity free, with thicknesses of only 0.4 microns.
摘要翻译：通过金属有机物分解制造包含钛酸锶钡（BSTO）与氧化镁添加剂组合的铁电复合材料薄膜。钛酸钡锶氧化镁铁电体复合体包括Ba1-xSrxTiO3 / MgO，其中x大于0.0但小于或等于0.75，优选为0.4，并且其中BSTO与氧化镁的重量比可为99至40重量％百分比BSTO至1至60重量％的氧化镁。这些膜具有期望的电子性质，并且可以应用于有源微波和动态随机存取存储器件，包括低介电常数，低损耗因子，高可调性和高电阻率。所生产的薄膜均匀厚，无杂质，厚度仅为0.4微米。

2. 发明申请

US20050088255A1 Electrically tunable filters with dielectric varactors 有权
标题翻译：带电介质变压器的电可调滤波器
公开(公告)号：US20050088255A1
公开(公告)日：2005-04-28
申请号：US10979001
申请日：2004-11-01
申请人： Louise Sengupta , Steven Stowell , Yongfei Zhu , Somnath Sengupta , Luna Chiu , Xubai Zhang
发明人： Louise Sengupta , Steven Stowell , Yongfei Zhu , Somnath Sengupta , Luna Chiu , Xubai Zhang
IPC分类号： H01G7/06 , H01P1/20 , H03H7/01
CPC分类号： H01P1/20
摘要： This invention provides a voltage tunable filter comprising an input connection point, an output connection point, and at least one circuit branch electrically coupled to the input connection point and the output connection point and including a voltage tunable dielectric varactor electrically connected to an inductor. The voltage tunable filter can be one of a low-pass, high-pass, band-pass, or band-stop filter. The varactor can include built-in DC blocking capacitors.
摘要翻译：本发明提供了一种电压可调谐滤波器，包括输入连接点，输出连接点和电耦合到输入连接点和输出连接点的至少一个电路支路，并且包括电连接到电感器的电压可调介质变容二极管。电压可调滤波器可以是低通，高通，带通或带阻滤波器之一。变容二极管可以包括内置的直流阻塞电容器。

3. 发明授权

US6074971A Ceramic ferroelectric composite materials with enhanced electronic properties BSTO-Mg based compound-rare earth oxide 有权
标题翻译：具有增强电子性能的陶瓷铁电复合材料BSTO-Mg基复合稀土氧化物
公开(公告)号：US6074971A
公开(公告)日：2000-06-13
申请号：US191546
申请日：1998-11-13
申请人： Luna H. Chiu , Louise C. Sengupta , Steven Stowell , Somnath Sengupta , Jennifer Synowczynski
发明人： Luna H. Chiu , Louise C. Sengupta , Steven Stowell , Somnath Sengupta , Jennifer Synowczynski
IPC分类号： C04B35/053 , C04B35/465 , C04B35/468 , C04B35/47
CPC分类号： C04B35/053 , C04B35/465
摘要： Ceramic ferroelectric composite materials comprising barium strontium titte/magnesium and oxygen-containing compound composite further doped with rare earth (lanthanide) oxides. More particularly, these inventive composites are comprised of Ba.sub.1-x Sr.sub.x TiO.sub.3 /Mg--O based compound/rare earth oxide composite, wherein x is greater than or equal to 0.0 but less than or equal to 1.0, and wherein the weight ratio of BSTO to Mg compound may range from 99.75-20 wt. % BSTO to 0.25-80 wt. % Mg compound, and wherein said rare earth oxide additive comprises less than about 10 mole percent of the composite. The rare earth oxides of the composite include all oxides of the lanthanide series elements including scandium and yttrium, as well as combinations thereof. The magnesium-based compound may be selected from the group consisting of MgO, MgZrO.sub.3, MgZrSrTiO.sub.3, MgTiO.sub.3, and MgCO.sub.3. This new class of composite materials has enhanced electronic properties including: low dielectric constants; substantially decreased electronic loss (low loss tangents); increased tunability; increased temperature stability; decreased sintering temperatures; and low curie temperatures. The electronic properties of these new materials can be tailored for various applications including phased array antenna systems, capacitors, transmission wire, wireless communication, and pyroelectric guidance devices.
摘要翻译：包含钛酸锶钡/镁的陶瓷铁电复合材料和进一步掺杂稀土（镧系元素）氧化物的含氧化合物复合材料。更具体地说，这些本发明的复合材料包括Ba1-xSrxTiO3 / Mg-O基化合物/稀土氧化物复合材料，其中x大于或等于0.0但小于或等于1.0，并且其中BSTO与Mg的重量比化合物可以为99.75-20wt。％BSTO为0.25-80wt。％Mg化合物，并且其中所述稀土氧化物添加剂包含小于约10摩尔％的复合材料。复合材料的稀土氧化物包括镧系元素的所有氧化物，包括钪和钇，以及它们的组合。镁基化合物可以选自MgO，MgZrO3，MgZrSrTiO3，MgTiO3和MgCO3。这种新型复合材料具有增强的电子性能，包括：低介电常数; 电子损失大幅减少（低损耗切线）; 增加可调性; 提高温度稳定性; 降低烧结温度; 和低居里温度。这些新材料的电子特性可以适用于各种应用，包括相控阵天线系统，电容器，传输线，无线通信和热释电引导装置。

4. 发明授权

US5693429A Electronically graded multilayer ferroelectric composites 失效
标题翻译：电子分级多层铁电复合材料
公开(公告)号：US5693429A
公开(公告)日：1997-12-02
申请号：US647260
申请日：1996-05-13
申请人： Louise C. Sengupta , Eric Ngo , Michelina E. O'Day , Steven Stowell , Robert Lancto , Somnath Sengupta , Thomas V. Hynes
发明人： Louise C. Sengupta , Eric Ngo , Michelina E. O'Day , Steven Stowell , Robert Lancto , Somnath Sengupta , Thomas V. Hynes
IPC分类号： B32B18/00 , C04B35/465 , H01Q1/38 , H01Q3/36 , H01Q3/44 , B32B17/00
CPC分类号： C04B35/465 , B32B18/00 , H01Q1/38 , H01Q3/36 , H01Q3/44 , C04B2237/34 , C04B2237/343 , C04B2237/346 , C04B2237/348 , C04B2237/58 , C04B2237/704
摘要： A laminated ceramic ferroelectric material has adjacent layers of Barium ontium Titanate (BSTO)--oxide composite stacked in order of descending oxide content and sized in thickness to produce a generally equal capacitance across each layer, resulting in a material having a graded dielectric constant for use in phased array antenna, for example. The oxides are from the metallic oxide group consisting of alumina, zirconia and magnesia and the layers are produced by tape casting.
摘要翻译：叠层陶瓷铁电体材料具有相邻的层状氧化钡钡（BSTO） - 氧化物复合物，其按照氧化物含量降低的顺序层叠，并且尺寸在厚度上以在每个层上产生大致相等的电容，导致具有梯度介电常数的材料用于使用在相控阵天线中。氧化物来自由氧化铝，氧化锆和氧化镁组成的金属氧化物，并且通过带铸制造层。

5. 发明授权

US5427988A Ceramic ferroelectric composite material - BSTO-MgO 失效
标题翻译：陶瓷铁电复合材料 - BSTO-MgO
公开(公告)号：US5427988A
公开(公告)日：1995-06-27
申请号：US207446
申请日：1994-03-07
申请人： Louise Sengupta , Eric Ngo , Steven Stowell , Michelina O'Day , Robert Lancto
发明人： Louise Sengupta , Eric Ngo , Steven Stowell , Michelina O'Day , Robert Lancto
IPC分类号： C04B35/46 , C04B35/117 , C04B35/465 , C04B35/49 , H01Q1/38 , H01Q3/36
CPC分类号： H01Q3/36 , C04B35/117 , C04B35/465 , C04B35/49 , H01Q1/38
摘要： A novel ceramic ferroelectric material having a low dielectric constant, extremely low loss and high tunability. The material is a composite comprising Barium Strontium Titanate (BSTO) and a ceramic material having a low dielectric constant. The preferred composite is represented by Ba.sub.1-x Sr.sub.x TiO.sub.3 --MgO, wherein x is greater than 0.00, but less than or equal to 0.75, and wherein the percent weight ratio between Ba.sub.1-x Sr.sub.x TiO.sub.3 and MgO ranges from approximately 99%-40% and 1%-60%, respectively. The novel materials possess superior electronic properties; and they may be employed in various antenna systems at both microwave and millimeter wave range frequencies.
摘要翻译：一种具有低介电常数，极低损耗和高可调谐性的新型陶瓷铁电材料。该材料是包含钛酸钡锶（BSTO）和具有低介电常数的陶瓷材料的复合材料。优选的复合材料由Ba1-xSrxTiO3-MgO表示，其中x大于0.00，但小于或等于0.75，并且其中Ba1-xSrxTiO3和MgO之间的重量百分比范围为约99％-40％和1％ -60％。新型材料具有优越的电子性能; 并且它们可以在微波和毫米波段频率的各种天线系统中使用。

6. 发明授权

US5486491A Ceramic ferroelectric composite material - BSTO-ZrO.sub.2 失效
标题翻译：陶瓷铁电复合材料 - BSTO-ZrO2 + B
公开(公告)号：US5486491A
公开(公告)日：1996-01-23
申请号：US207447
申请日：1994-03-07
申请人： Louise Sengupta , Eric Ngo , Steven Stowell , Michelina O'Day , Robert Lancto
发明人： Louise Sengupta , Eric Ngo , Steven Stowell , Michelina O'Day , Robert Lancto
IPC分类号： C04B35/46 , C04B35/117 , C04B35/465 , C04B35/49 , H01Q1/38 , H01Q3/36
CPC分类号： H01Q3/36 , C04B35/117 , C04B35/465 , C04B35/49 , H01Q1/38
摘要： A novel ceramic ferroelectric material having a low dielectric constant, loss and high tunability. The material is a composite comprising Barium Strontium Titanate (BSTO) and a ceramic material having a low dielectric constant. The preferred composite is represented by Ba.sub.1-x Sr.sub.x TiO.sub.3 --ZrO.sub.2, wherein x is greater than 0.00, but less than or equal to 0.70, and wherein the percent weight ratio between Ba.sub.1-x Sr.sub.x TiO.sub.3 and ZrO.sub.2 ranges from approximately 99%-40% and 1%-60%, respectively. The novel materials possess superior electronic properties; and they may be employed in various antenna systems.
摘要翻译：具有低介电常数，低损耗和高可调谐性的新型陶瓷铁电材料。该材料是包含钛酸钡锶（BSTO）和具有低介电常数的陶瓷材料的复合材料。优选的复合材料由Ba1-xSrxTiO3-ZrO2表示，其中x大于0.00，但小于或等于0.70，并且其中Ba1-xSrxTiO3和ZrO2之间的重量比为约99％-40％和1％ -60％。新型材料具有优越的电子性能; 并且它们可以用于各种天线系统中。

7. 发明授权

US5312790A Ceramic ferroelectric material 失效
标题翻译：陶瓷铁电材料
公开(公告)号：US5312790A
公开(公告)日：1994-05-17
申请号：US76291
申请日：1993-06-09
申请人： Louise C. Sengupta , Eric Ngo , Steven Stowell , Gary Gilde , Robert Lancto
发明人： Louise C. Sengupta , Eric Ngo , Steven Stowell , Gary Gilde , Robert Lancto
IPC分类号： C04B35/46 , C04B35/117 , C04B35/465 , C04B35/49 , H01Q1/38 , H01Q3/36
CPC分类号： H01Q3/36 , C04B35/117 , C04B35/465 , C04B35/49 , H01Q1/38
摘要： A novel ceramic ferroelectric material having a low dielectric constant, loss and high tunability. The material is a composite comprising Barium Strontium Titanate (BSTO) and a ceramic material having a low dielectric constant. The preferred composite is represented by Ba.sub.1-x Sr.sub.x TiO.sub.3 -Al.sub.2 O.sub.3, wherein x is greater than 0.00, but less than or equal to 0.70, and wherein the percent weight ratio between Ba.sub.1-x Sr.sub.x TiO.sub.3 and Al.sub.2 O.sub.3 ranges from approximately 99%-40% and 1%-60%, respectively. The novel materials possess superior electronic properties; and they may be employed in various antenna systems.
摘要翻译：具有低介电常数，低损耗和高可调谐性的新型陶瓷铁电材料。该材料是包含钛酸钡锶（BSTO）和具有低介电常数的陶瓷材料的复合材料。优选的复合材料由Ba1-xSrxTiO3-Al2O3表示，其中x大于0.00，但小于或等于0.70，并且其中Ba1-xSrxTiO3和Al2O3之间的重量比百分比范围为约99％-40％和1％ -60％。新型材料具有优越的电子性能; 并且它们可以用于各种天线系统中。

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