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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
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。
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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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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。
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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。
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