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    Electrically tunable filters with dielectric varactors
    2.
    发明申请
    Electrically tunable filters with dielectric varactors 有权
    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。

    Ceramic ferroelectric composite materials with enhanced electronic properties BSTO-Mg based compound-rare earth oxide
    3.
    发明授权
    Ceramic ferroelectric composite materials with enhanced electronic properties BSTO-Mg based compound-rare earth oxide 有权
    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。

    Ceramic ferroelectric composite material - BSTO-MgO
    5.
    发明授权
    Ceramic ferroelectric composite material - BSTO-MgO 失效
    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。

    Ceramic ferroelectric composite material - BSTO-ZrO.sub.2
    6.
    发明授权
    Ceramic ferroelectric composite material - BSTO-ZrO.sub.2 失效
    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。

    Ceramic ferroelectric material
    7.
    发明授权
    Ceramic ferroelectric material 失效
    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。