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1. 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。

2. 发明授权

US07145415B2 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：US07145415B2
公开(公告)日：2006-12-05
申请号：US10979001
申请日：2004-11-01
申请人： Louise C. Sengupta , Steven C. Stowell , Yongfei Zhu , Somnath Sengupta , Luna H. Chiu , Xubai Zhang
发明人： Louise C. Sengupta , Steven C. Stowell , Yongfei Zhu , Somnath Sengupta , Luna H. Chiu , Xubai Zhang
IPC分类号： 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

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。

4. 发明授权

US6063719A Ceramic ferrite/ferroelectric composite material 有权
标题翻译：陶瓷铁氧体/铁电复合材料
公开(公告)号：US6063719A
公开(公告)日：2000-05-16
申请号：US144982
申请日：1998-09-01
申请人： Louise C. Sengupta , Somnath Sengupta
发明人： Louise C. Sengupta , Somnath Sengupta
IPC分类号： C04B35/26 , H01F1/03 , C04B35/468 , C04B35/47
CPC分类号： H01F1/0315 , C04B35/2683
摘要： A novel ceramic ferrite/ferroelectric composite material having a low dissipation factor, voltage tunability, and proper impedance matching for the incident medium. The material comprises ferrites doped with the ferroelectric Barium Strontium Titanate (BSTO) or ferrites doped with the ferroelectric Barium Strontium Titanate (BSTO)/MgO. Preferred composites are magnesium ferrites doped with BSTO and magnesium ferrites doped with BSTO/MgO. Most particularly, the inventive composites are comprised of magnesium ferrites doped with Ba.sub.1-x Sr.sub.x TiO.sub.3 and magnesium ferrites doped with 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 of magnesium ferrite to BSTO or BSTO/MgO is 60 to 95 percent ferrite to 40 to 5 percent BSTO or 60 to 95 percent ferrite to 40 to 5 percent BSTO/MgO ferroelectric. A particularly well suited composite, i.e., one having a .mu./.di-elect cons. ratio close to unity, comprises 80 weight percent magnesium ferrite and 20 weight percent BSTO/MgO, wherein said BSTO/MgO comprises 80 weight percent Ba.sub.0.6 Sr.sub.0.4 TiO.sub.3 combined with 20 weight percent MgO.
摘要翻译：一种新颖的陶瓷铁氧体/铁电复合材料，具有低的损耗因子，电压可调性和对入射介质的适当阻抗匹配。该材料包括掺杂有铁电的钛酸钡锶（BSTO）的铁氧体或掺有铁电的锶钡（BSTO）/ MgO的铁氧体。优选的复合材料是掺杂有BSTO的镁铁氧体和掺杂有BSTO / MgO的镁铁氧体。最具体地，本发明的复合材料包括掺杂有Ba1-xSrxTiO3的镁铁氧体和掺杂有Ba1-xSrxTiO3 / MgO的镁铁氧体，其中x大于0.00，但小于或等于0.75，并且其中镁的百分比重量比 BSTO或BSTO / MgO的铁素体为铁素体为60〜95％，BSTO为40〜5％，铁素体为60〜95％，BSTO / MgO铁电体为40〜5％。一种特别适合的复合材料，即一种接近一致的μ/ + 531比率的复合材料，包含80重量％的铁素体和20重量％的BSTO / MgO，其中所述BSTO / MgO包括80重量百分比的Ba0.6Sr0.4TiO3与 20重量％MgO。

5. 发明授权

US06876279B2 Voltage tunable laminated dielectric materials for a coplanor waveguide 有权
标题翻译：用于共面波导的电压可调叠层电介质材料
公开(公告)号：US06876279B2
公开(公告)日：2005-04-05
申请号：US10068512
申请日：2002-02-06
申请人： Louise Sengupta , Steven C. Stowell , Yongfei Zhu , Somnath Sengupta , Luna H. Chiu , Xubai Zhang
发明人： Louise Sengupta , Steven C. Stowell , Yongfei Zhu , Somnath Sengupta , Luna H. Chiu , Xubai Zhang
IPC分类号： B32B7/02 , H01P1/18 , H01P3/00 , H01P3/02 , H01P3/06 , H01P3/08 , H01P3/12 , H01P3/16 , H01P7/06 , H01Q3/44 , H05K1/02 , H05K1/16
CPC分类号： H05K1/162 , H01P1/181 , H01P3/003 , H01P3/06 , H01P3/081 , H01P3/088 , H01P3/122 , H01P7/06 , H01Q3/44 , H05K1/024 , H05K2201/0187 , H05K2201/037 , H05K2203/105 , H05K2203/171
摘要： A tunable dielectric structure includes a first layer of dielectric material, a second layer of dielectric material positioned adjacent to the first layer of dielectric material, with the second layer of dielectric material having a dielectric constant that is less than the dielectric constant of the first layer of dielectric material, and electrodes for applying a controllable voltage across the first dielectric material, thereby controlling a dielectric constant of the first dielectric material, wherein at least one of the electrodes is positioned between the first and second layers of dielectric material. The dielectric materials can be formed in various shapes and assembled in various orientations with respect to each other. The tunable dielectric structure is used in various devices including coaxial cables, cavity antennas, microstrip lines, coplanar lines, and waveguides.
摘要翻译：可调电介质结构包括第一介电材料层，邻近第一介电材料层定位的第二介电材料层，第二介电材料层的介电常数小于第一层的介电常数以及用于在第一介电材料上施加可控电压的电极，从而控制第一介电材料的介电常数，其中至少一个电极位于第一和第二介电层之间。介电材料可以形成为各种形状并且以各种取向相对于彼此组装。可调电介质结构用于包括同轴电缆，空腔天线，微带线，共面线和波导在内的各种装置。

6. 发明授权

US06686814B2 Voltage tunable varactors and tunable devices including such varactors 有权
标题翻译：电压可调变容二极管和包括这种变容二极管的可调谐装置
公开(公告)号：US06686814B2
公开(公告)日：2004-02-03
申请号：US10223745
申请日：2002-08-19
申请人： Luna H. Chiu , Yongfei Zhu , Xubai Zhang , Steven C. Stowell , Andrey Kozyrev , Somnath Sengupta , Louise Sengupta
发明人： Luna H. Chiu , Yongfei Zhu , Xubai Zhang , Steven C. Stowell , Andrey Kozyrev , Somnath Sengupta , Louise Sengupta
IPC分类号： H01P118
CPC分类号： H01P1/2016 , H01P1/181
摘要： A voltage tunable dielectric varactor includes a substrate having a low dielectric constant and having generally planar surface, a tunable ferroelectric layer positioned on the generally planar surface of the substrate, and first and second electrodes positioned on a surface of the tunable ferroelectric layer opposite the generally planar surface of the substrate. The first and second electrodes are separated to form a gap therebetween. The varactor includes an input for receiving a radio frequency signal and an output for delivering the radio frequency signal. A bias voltage applied to the electrodes changes the capacitance of the varactor between the input and output thereof. Phase shifters and filters that include the varactor are also described.
摘要翻译：电压可调介质变容二极管包括具有低介电常数且具有大体上平坦表面的基板，位于基板的大体平坦表面上的可调铁电层，以及位于可调谐铁电层的表面上的第一和第二电极，基板的平面。分离第一和第二电极以在它们之间形成间隙。变容二极管包括用于接收射频信号的输入和用于传送射频信号的输出。施加到电极的偏置电压改变变容二极管的输入和输出之间的电容。还描述了包括变容二极管的移相器和滤波器。

7. 发明授权

US06683516B2 Voltage tunable laminated dielectric materials for microwave applications such as a tunable cavity 有权
标题翻译：用于微波应用的电压可调叠层电介质材料，例如可调谐腔
公开(公告)号：US06683516B2
公开(公告)日：2004-01-27
申请号：US10068707
申请日：2002-02-06
申请人： Luna H. Chiu , Yongfei Zhu , Xubai Zhang , Steven C. Stowell , Andrey Kozyrev , Somnath Sengupta , Louise Sengupta
发明人： Luna H. Chiu , Yongfei Zhu , Xubai Zhang , Steven C. Stowell , Andrey Kozyrev , Somnath Sengupta , Louise Sengupta
IPC分类号： H01P706
CPC分类号： H05K1/162 , H01P1/181 , H01P3/003 , H01P3/06 , H01P3/081 , H01P3/088 , H01P3/122 , H01P7/06 , H01Q3/44 , H05K1/024 , H05K2201/0187 , H05K2201/037 , H05K2203/105 , H05K2203/171
摘要： A tunable dielectric structure includes a first layer of dielectric material, a second layer of dielectric material positioned adjacent to the first layer of dielectric material, with the second layer of dielectric material having a dielectric constant that is less than the dielectric constant of the first layer of dielectric material, and electrodes for applying a controllable voltage across the first dielectric material, thereby controlling a dielectric constant of the first dielectric material, wherein at least one of the electrodes is positioned between the first and second layers of dielectric material. The dielectric materials can be formed in various shapes and assembled in various orientations with respect to each other. The tunable dielectric structure is used in various devices including coaxial cables, cavity antennas, microstrip lines, coplanar lines, and waveguides.
摘要翻译：可调电介质结构包括第一介电材料层，邻近第一介电材料层定位的第二介电材料层，第二介电材料层的介电常数小于第一层的介电常数以及用于在第一介电材料上施加可控电压的电极，从而控制第一介电材料的介电常数，其中至少一个电极位于第一和第二介电层之间。介电材料可以形成为各种形状并且以各种取向相对于彼此组装。可调电介质结构用于包括同轴电缆，空腔天线，微带线，共面线和波导在内的各种装置。

8. 发明授权

US06531936B1 Voltage tunable varactors and tunable devices including such varactors 有权
公开(公告)号：US06531936B1
公开(公告)日：2003-03-11
申请号：US09419126
申请日：1999-10-15
申请人： Luna H. Chiu , Yongfei Zhu , Xubai Zhang , Steven C. Stowell , Andrey Kozyrev , Somnath Sengupta , Louise Sengupta
发明人： Luna H. Chiu , Yongfei Zhu , Xubai Zhang , Steven C. Stowell , Andrey Kozyrev , Somnath Sengupta , Louise Sengupta
IPC分类号： H01P300
CPC分类号： H01P1/2016 , H01P1/181
摘要： A voltage tunable dielectric varactor includes a substrate having a low dielectric constant and having generally planar surface, a tunable ferroelectric layer positioned on the generally planar surface of the substrate, and first and second electrodes positioned on a surface of the tunable ferroelectric layer opposite the generally planar surface of the substrate. The first and second electrodes are separated to form a gap therebetween. The varactor includes an input for receiving a radio frequency signal and an output for delivering the radio frequency signal. A bias voltage applied to the electrodes changes the capacitance of the varactor between the input and output thereof. Phase shifters and filters that include the varactor are also described.

9. 发明授权

US06727535B1 Ferroelectric varactor with built-in DC blocks 有权
标题翻译：铁电变容二极管内置直流电阻
公开(公告)号：US06727535B1
公开(公告)日：2004-04-27
申请号：US09434433
申请日：1999-11-04
申请人： Louise C. Sengupta , Steven C. Stowell , Yongfei Zhu , Somnath Sengupta
发明人： Louise C. Sengupta , Steven C. Stowell , Yongfei Zhu , Somnath Sengupta
IPC分类号： H01L2976
CPC分类号： H01L27/016 , H01G7/06 , H01L29/93
摘要： A voltage tunable dielectric varactor includes a tunable ferroelectric layer and first and second non-tunable dielectric layers. First and second electrodes positioned adjacent to the tunable ferroelectric layer form a tunable capacitor. A third electrode is positioned adjacent to the first non-tunable dielectric layer such that the third and first electrodes and the first non-tunable dielectric layer form a first blocking capacitor. A fourth electrode is positioned adjacent to the second non-tunable dielectric layer such that the fourth and second electrodes and the second non-tunable dielectric layer form a second blocking capacitor. The first and second electrodes can be positioned on a surface of the tunable ferroelectric layer opposite the generally planar surface of the substrate, with the first and second electrodes being separated to form a gap. The first and second non-tunable dielectric layers can also be positioned on the generally planar surface of the substrate. The third electrode can be positioned on the surface of the first non-tunable dielectric layer opposite the generally planar surface of the substrate such that the third and first electrodes form a second gap. The fourth electrode can be positioned on the surface of the second non-tunable dielectric layer opposite the generally planar surface of the substrate such that the fourth and second electrodes form a third gap.
摘要翻译：电压可调介质变容二极管包括可调谐铁电层和第一和第二不可调电介质层。位于与可调谐铁电体层相邻的第一和第二电极形成可调电容器。第三电极定位成与第一非可调电介质层相邻，使得第三电极和第一电极和第一非可调电介质层形成第一阻塞电容器。第四电极定位成与第二非可调电介质层相邻，使得第四和第二电极和第二非可调电介质层形成第二阻塞电容器。第一和第二电极可以位于与基板的大致平坦的表面相对的可调谐铁电层的表面上，其中第一和第二电极被分离以形成间隙。第一和第二非可调电介质层也可以位于基底的大致平坦的表面上。第三电极可以位于与基板的大致平坦的表面相对的第一非可调电介质层的表面上，使得第三和第一电极形成第二间隙。第四电极可以位于与基板的大致平坦的表面相对的第二非可调电介质层的表面上，使得第四和第二电极形成第三间隙。

10. 发明授权

US06794960B2 Voltage tunable laminated dielectric materials for microwave waveguide applications 有权
标题翻译：用于微波波导应用的电压可调叠层电介质材料
公开(公告)号：US06794960B2
公开(公告)日：2004-09-21
申请号：US10068355
申请日：2002-02-06
申请人： Luna H. Chiu , Yongfei Zhu , Xubai Zhang , Steven C. Stowell , Andrey Kozyrev , Somnath Sengupta , Louise Sengupta
发明人： Luna H. Chiu , Yongfei Zhu , Xubai Zhang , Steven C. Stowell , Andrey Kozyrev , Somnath Sengupta , Louise Sengupta
IPC分类号： H01P318
CPC分类号： H05K1/162 , H01P1/181 , H01P3/003 , H01P3/06 , H01P3/081 , H01P3/088 , H01P3/122 , H01P7/06 , H01Q3/44 , H05K1/024 , H05K2201/0187 , H05K2201/037 , H05K2203/105 , H05K2203/171
摘要： A tunable dielectric structure includes a first layer of dielectric material, a second layer of dielectric material positioned adjacent to the first layer of dielectric material, with the second layer of dielectric material having a dielectric constant that is less than the dielectric constant of the first layer of dielectric material, and electrodes for applying a controllable voltage across the first dielectric material, thereby controlling a dielectric constant of the first dielectric material, wherein at least one of the electrodes is positioned between the first and second layers of dielectric material. The dielectric materials can be formed in various shapes and assembled in various orientations with respect to each other. The tunable dielectric structure is used in various devices including coaxial cables, cavity antennas, microstrip lines, coplanar lines, and waveguides.
摘要翻译：可调电介质结构包括第一介电材料层，邻近第一介电材料层定位的第二介电材料层，第二介电材料层的介电常数小于第一层的介电常数以及用于在第一介电材料上施加可控电压的电极，从而控制第一介电材料的介电常数，其中至少一个电极位于第一和第二介电层之间。介电材料可以形成为各种形状并且以各种取向相对于彼此组装。可调电介质结构用于包括同轴电缆，空腔天线，微带线，共面线和波导在内的各种装置。

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