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1. 发明授权

US08138858B1 Architectures using multiple dual-mode surface acoustic wave devices 有权
标题翻译：使用多个双模声表面波器件的架构
公开(公告)号：US08138858B1
公开(公告)日：2012-03-20
申请号：US12260703
申请日：2008-10-29
申请人： Jayanti Jaganatha Rao , Aleh Loseu , Kevin J. Gamble
发明人： Jayanti Jaganatha Rao , Aleh Loseu , Kevin J. Gamble
IPC分类号： H03H9/64
CPC分类号： H03H9/6459 , H03H9/02913 , H03H9/64
摘要： The present invention relates to dual-mode SAW devices (DMSDs), which may allow for clean layouts of SAW device elements and provide low impedance with reduced insertion loss, and may increase broadband rejection by improving parasitic characteristics. In one embodiment of the present invention, a parallel set of DMSDs is cascaded with another parallel set of DMSDs. Internal connections between the four DMSDs may be electrically floating, which may further improve parasitic characteristics. With electrically floating internal connections, the parallel set of DMSDs may share a common grating structure, thereby reducing the size and complexity of a DMSD, which may further improve parasitic characteristics. The DMSDs may be used in radio frequency (RF) applications, such as SAW filters.
摘要翻译：本发明涉及双模SAW器件（DMSD），其可以允许SAW器件元件的清洁布局并且提供具有降低的插入损耗的低阻抗，并且可以通过改善寄生特性来增加宽带抑制。在本发明的一个实施例中，并行的一组DMSD与另一个并行的一组DMSD级联。四个DMSD之间的内部连接可以是电浮动的，这可进一步改善寄生特性。通过电浮动内部连接，DMSD的并行组可以共享公共的光栅结构，从而减小DMSD的尺寸和复杂性，这可以进一步改善寄生特性。 DMSD可用于射频（RF）应用中，例如SAW滤波器。

2. 发明授权

US07521837B1 Saw architecture with series connected interdigitated transducers 有权
标题翻译：锯结构与串联连接的交错换能器
公开(公告)号：US07521837B1
公开(公告)日：2009-04-21
申请号：US11431991
申请日：2006-05-11
申请人： Aleh Loseu , Jayanti Jaganatha Rao
发明人： Aleh Loseu , Jayanti Jaganatha Rao
IPC分类号： H01L41/08
CPC分类号： H03H9/6406 , H01L2224/16225 , H01L2224/48091 , H01L2224/48227 , H01L2924/181 , H01L2924/19105 , H03H9/0038 , Y10T29/42 , Y10T29/49005 , Y10T29/4908 , Y10T29/49128 , Y10T29/49155 , H01L2924/00012 , H01L2924/00014
摘要： The present invention provides a surface acoustic wave (SAW) architecture wherein two acoustic reflectors are formed on a piezoelectric substrate to define an acoustic cavity between the acoustic reflectors. At least one alpha interdigitated transducer (IDT) may be provided, and at least three beta IDTs are provided. These IDTs are placed in acoustic series within the acoustic cavity. The alpha IDT is electrically coupled to a first interface. The beta IDTs are coupled in electrical and acoustic series and are associated with a second interface. In certain embodiments, the at least three beta IDTs are adjacent one another, while in other embodiments an additional reflector or an alpha IDT may be placed between two beta IDTs.
摘要翻译：本发明提供了一种表面声波（SAW）结构，其中两个声反射器形成在压电基片上以在声反射器之间限定声腔。可以提供至少一个α交叉换能器（IDT），并且提供至少三个βIDT。这些IDT被放置在声腔内的声学系列中。 αIDT电耦合到第一接口。 βIDT以电和声系列耦合并且与第二接口相关联。在某些实施例中，所述至少三个βIDT彼此相邻，而在其它实施例中，可以在两个βIDT之间设置附加的反射器或αIDT。

3. 发明授权

US08134426B1 Two-track surface acoustic wave structure without internal pads 有权
标题翻译：双轨表面声波结构无内部垫
公开(公告)号：US08134426B1
公开(公告)日：2012-03-13
申请号：US12628579
申请日：2009-12-01
申请人： Aleh Loseu , Jayanti Jaganatha Rao
发明人： Aleh Loseu , Jayanti Jaganatha Rao
IPC分类号： H03H9/64 , H01L41/04
CPC分类号： H03H9/6456 , H03H9/0057 , H03H9/0061
摘要： The present disclosure relates to a two-track surface acoustic wave (SAW) device that has a reduced size compared to a traditional two-track SAW device by eliminating an internal ground connection node of the traditional two-track SAW device. The internal ground connection node is eliminated by coupling an internal ground interconnection to an external ground connection node through an interconnecting ground grating, which is part of one of two SAW tracks of the two-track SAW device. The internal ground interconnection is located in an internal region of the two-track SAW device that is defined by the two SAW tracks and by two electrical interconnections between the two SAW tracks.
摘要翻译：本发明涉及通过消除传统双轨SAW器件的内部接地连接节点而与传统双轨SAW器件相比尺寸减小的双轨声表面波（SAW）器件。通过互连的接地光栅将内部接地互连连接到外部接地连接节点来消除内部接地连接节点，该互连接地光栅是双轨SAW器件的两个SAW轨道之一的一部分。内部接地互连位于由两个SAW轨道限定的双轨SAW器件的内部区域中，并且位于两个SAW轨道之间的两个电互连。

4. 发明授权

US07408284B1 Center chirping within series connected interdigitated transducers 有权
标题翻译：串联连接的互换传感器中心啁啾
公开(公告)号：US07408284B1
公开(公告)日：2008-08-05
申请号：US11431988
申请日：2006-05-11
申请人： Aleh Loseu , Jayanti Jaganatha Rao
发明人： Aleh Loseu , Jayanti Jaganatha Rao
IPC分类号： H01L41/08
CPC分类号： H03H9/6406 , H01L2224/16225 , H01L2224/48091 , H01L2224/48227 , H01L2924/181 , H01L2924/19105 , H03H9/0038 , Y10T29/42 , Y10T29/49005 , Y10T29/4908 , Y10T29/49128 , Y10T29/49155 , H01L2924/00012 , H01L2924/00014
摘要： A SAW architecture is provided with two acoustic reflectors formed on a piezoelectric substrate defining an acoustic cavity between the acoustic reflectors. At least one alpha IDT may be provided, and at least three beta IDTs are provided. These IDTs are placed in acoustic series within the acoustic cavity. The alpha IDT is electrically coupled to a first interface. The beta IDTs are coupled in electrical and acoustic series and associated with a second interface. In certain embodiments, the at least three beta IDTs are adjacent one another, while in other embodiments an additional reflector or an alpha IDT may be placed between two beta IDTs. The beta IDTs include two outer beta IDTs and an inner beta IDT located between the two outer beta IDTs. The inner beta IDT may be chirped in a center portion, wherein the area outside of the center portion is not chirped.
摘要翻译： SAW结构设置有形成在压电衬底上的两个声反射器，其在声反射器之间限定声腔。可以提供至少一个αIDT，并且提供至少三个βIDT。这些IDT被放置在声腔内的声学系列中。 αIDT电耦合到第一接口。 βIDT以电和声系列耦合并与第二接口相关联。在某些实施例中，所述至少三个βIDT彼此相邻，而在其它实施例中，可以在两个βIDT之间设置附加的反射器或αIDT。 βIDT包括两个外部beta IDT和位于两个外部beta IDT之间的内部βIDT。内部βIDT可以在中心部分中被啁啾，其中中心部分外部的区域不是啁啾的。

5. 发明授权

US08069542B1 Interleaved interdigitated transducers 有权
标题翻译：交错交叉换能器
公开(公告)号：US08069542B1
公开(公告)日：2011-12-06
申请号：US12030711
申请日：2008-02-13
申请人： Aleh Loseu , Jayanti Jaganatha Rao
发明人： Aleh Loseu , Jayanti Jaganatha Rao
IPC分类号： H04R17/00
CPC分类号： H03H9/6406 , H01L2224/16225 , H01L2224/48091 , H01L2224/48227 , H01L2924/181 , H01L2924/19105 , H03H9/0038 , Y10T29/42 , Y10T29/49005 , Y10T29/4908 , Y10T29/49128 , Y10T29/49155 , H01L2924/00012 , H01L2924/00014
摘要： The present invention provides an interleaved IDT that is connected to and overlaps adjacent IDTs. In particular, the interleaved IDT may be connected to both an input IDT and an output IDT via corresponding bus bars. The first bus bar of the interleaved IDT is connected to the bus bar of the input IDT, and the other bus bar of the interleaved IDT is connected to a bus bar of the output IDT. The interleaved IDT is coupled electrically to the respective input and output ports of the overall surface acoustic wave architecture. As such, the bus bars of the respective input and output IDTs are effectively extended, such that the adjacent edges of the respective input and output IDTs partially overlap one another in an interdigitated fashion at the interleaved IDT.
摘要翻译：本发明提供了一个交织的IDT，其被连接到相邻的IDT并与其重叠。特别地，交错IDT可以通过相应的母线连接到输入IDT和输出IDT两者。交错IDT的第一个母线连接到输入IDT的母线，交错IDT的另一个母线连接到输出IDT的母线。交织的IDT电耦合到整个声表面波结构的相应的输入和输出端口。这样，相应的输入和输出IDT的汇流条被有效地扩展，使得相应的输入和输出IDT的相邻边缘在交错IDT处以叉指方式部分地彼此重叠。

6. 发明授权

US07528684B1 Edge chirping within series connected interdigitated transducers 有权
标题翻译：串联连接叉指传感器的边缘啁啾
公开(公告)号：US07528684B1
公开(公告)日：2009-05-05
申请号：US11432249
申请日：2006-05-11
申请人： Jayanti Jaganatha Rao , Aleh Loseu
发明人： Jayanti Jaganatha Rao , Aleh Loseu
IPC分类号： H03H9/64
CPC分类号： H03H9/6406 , H01L2224/16225 , H01L2224/48091 , H01L2224/48227 , H01L2924/181 , H01L2924/19105 , H03H9/0038 , Y10T29/42 , Y10T29/49005 , Y10T29/4908 , Y10T29/49128 , Y10T29/49155 , H01L2924/00012 , H01L2924/00014
摘要： The present invention provides a surface acoustic wave (SAW) architecture wherein two acoustic reflectors are formed on a piezoelectric substrate to define an acoustic cavity between the acoustic reflectors. At least one alpha interdigitated transducer (IDT) may be provided, and at least three beta IDTs are provided. These IDTs are placed in acoustic series within the acoustic cavity. The alpha IDT is electrically coupled to a first interface. The beta IDTs are coupled in electrical and acoustic series and are associated with a second interface. In certain embodiments, the at least three beta IDTs are adjacent one another, while in other embodiments an additional reflector or an alpha IDT may be placed between two beta IDTs. Edge chirping may be employed in adjacent edge portions of adjacent beta IDTs. Traditional edge chirping may be provided in adjacent edge portions of adjacent alpha and beta IDTs.
摘要翻译：本发明提供了一种表面声波（SAW）结构，其中两个声反射器形成在压电基片上以在声反射器之间限定声腔。可以提供至少一个α交叉换能器（IDT），并且提供至少三个βIDT。这些IDT被放置在声腔内的声学系列中。 αIDT电耦合到第一接口。 βIDT以电和声系列耦合并且与第二接口相关联。在某些实施例中，所述至少三个βIDT彼此相邻，而在其它实施例中，可以在两个βIDT之间设置附加的反射器或αIDT。边缘啁啾可用于相邻βIDT的相邻边缘部分。可以在相邻的α和βIDT的相邻边缘部分中提供传统的边缘线性调频。

7. 发明授权

US07449813B1 Interleaved interdigitated transducers 有权
标题翻译：交错交叉换能器
公开(公告)号：US07449813B1
公开(公告)日：2008-11-11
申请号：US11431986
申请日：2006-05-11
申请人： Aleh Loseu , Jayanti Jaganatha Rao
发明人： Aleh Loseu , Jayanti Jaganatha Rao
IPC分类号： H01L41/08
CPC分类号： H03H9/6406 , H01L2224/16225 , H01L2224/48091 , H01L2224/48227 , H01L2924/181 , H01L2924/19105 , H03H9/0038 , Y10T29/42 , Y10T29/49005 , Y10T29/4908 , Y10T29/49128 , Y10T29/49155 , H01L2924/00012 , H01L2924/00014
摘要： The present invention provides an interleaved IDT that is connected to and overlaps adjacent IDTs. In particular, the interleaved IDT may be connected to both an input IDT and an output IDT via corresponding bus bars. The first bus bar of the interleaved IDT is connected to the bus bar of the input IDT, and the other bus bar of the interleaved IDT is connected to a bus bar of the output IDT. The interleaved IDT is coupled electrically to the respective input and output ports of the overall surface acoustic wave architecture. As such, the bus bars of the respective input and output IDTs are effectively extended, such that the adjacent edges of the respective input and output IDTs partially overlap one another in an interdigitated fashion at the interleaved IDT.
摘要翻译：本发明提供了一个交织的IDT，其被连接到相邻的IDT并与其重叠。特别地，交错IDT可以通过相应的母线连接到输入IDT和输出IDT两者。交错IDT的第一个母线连接到输入IDT的母线，交错IDT的另一个母线连接到输出IDT的母线。交织的IDT电耦合到整个声表面波结构的相应的输入和输出端口。这样，相应的输入和输出IDT的汇流条被有效地扩展，使得相应的输入和输出IDT的相邻边缘在交错IDT处以叉指方式部分地彼此重叠。

8. 发明授权

US08225470B1 Process of making series connected interdigitated transducers with center chirping 有权
标题翻译：制造具有中心啁啾的串联连接的换向传感器的过程
公开(公告)号：US08225470B1
公开(公告)日：2012-07-24
申请号：US12030666
申请日：2008-02-13
申请人： Aleh Loseu , Jayanti Jaganatha Rao
发明人： Aleh Loseu , Jayanti Jaganatha Rao
IPC分类号： H01L41/08 , H04R17/10
CPC分类号： H03H9/6406 , H01L2224/16225 , H01L2224/48091 , H01L2224/48227 , H01L2924/181 , H01L2924/19105 , H03H9/0038 , Y10T29/42 , Y10T29/49005 , Y10T29/4908 , Y10T29/49128 , Y10T29/49155 , H01L2924/00012 , H01L2924/00014
摘要： Embodiments of the disclosure relate to a process of making a surface acoustic wave device having a series connected interdigitated transducers with center chirping. A piezoelectric substrate is provided. Two acoustic reflectors may be formed on the piezoelectric substrate to define an acoustic cavity between the acoustic reflectors. In addition, at least three beta interdigitated transducers (IDTs) adjacent one another are formed on the piezoelectric substrate in electrical series with each other and aligned in acoustic series with each other between the acoustic reflectors, such that the at least three beta IDTs comprise at least one inner beta IDT between two outer beta IDTs, a center portion of the at least one inner beta IDT being chirped.
摘要翻译：本公开的实施例涉及制造具有串联连接的具有中心啁啾的交叉换能器的表面声波装置的过程。提供压电基板。可以在压电基板上形成两个声反射器，以在声反射器之间限定声腔。此外，彼此相邻的至少三个β交叉换能器（IDT）彼此电连接地形成在压电基板上，并且在声反射器之间彼此以声音串联对准，使得至少三个βIDT包括在两个外部beta IDT之间的至少一个内部βIDT，所述至少一个内部ββIDT的中心部分被啁啾。

9. 发明授权

US07849582B1 SAW architecture with series connected interdigitated transducers 有权
标题翻译： SAW结构与串联连接的交叉换能器
公开(公告)号：US07849582B1
公开(公告)日：2010-12-14
申请号：US12030735
申请日：2008-02-13
申请人： Aleh Loseu , Jayanti Jaganatha Rao
发明人： Aleh Loseu , Jayanti Jaganatha Rao
IPC分类号： H04R31/00
CPC分类号： H03H9/6406 , H01L2224/16225 , H01L2224/48091 , H01L2224/48227 , H01L2924/181 , H01L2924/19105 , H03H9/0038 , Y10T29/42 , Y10T29/49005 , Y10T29/4908 , Y10T29/49128 , Y10T29/49155 , H01L2924/00012 , H01L2924/00014
摘要： An acoustic cavity of a surface acoustic wave (SAW) architecture is defined on a piezoelectric substrate by two acoustic reflectors are formed on a piezoelectric substrate. The surface acoustic wave architecture may include at least one alpha interdigitated transducer (IDT) at least three beta IDTs which are placed in acoustic series within the acoustic cavity. The alpha IDT is electrically coupled to a first interface. The beta IDTs are coupled in electrical and acoustic series and are associated with a second interface. At least three beta IDTs are adjacent one another. An additional reflector or an alpha IDT may be placed between two of the beta IDTs.
摘要翻译：表面声波（SAW）结构的声腔被定义在压电基片上，两个声反射器形成在压电基片上。表面声波结构可以包括至少三个βIDT，至少一个α交叉换能器（IDT），其被放置在声腔内的声学系列中。 αIDT电耦合到第一接口。 βIDT以电和声系列耦合并且与第二接口相关联。至少有三个beta IDT彼此相邻。另外的反射器或者αIDT可以被放置在两个beta IDT之间。

10. 发明申请

US20110204991A1 FILTERING CIRCUIT TOPOLOGY 审中-公开
标题翻译：滤波电路拓扑学
公开(公告)号：US20110204991A1
公开(公告)日：2011-08-25
申请号：US13026716
申请日：2011-02-14
申请人： Jayanti Jaganatha Rao , Chung Liang Lee , Geoffrey Lee Howell
发明人： Jayanti Jaganatha Rao , Chung Liang Lee , Geoffrey Lee Howell
IPC分类号： H01P5/12 , H01P1/10
CPC分类号： H01P1/213
摘要： The exemplary embodiments described provide a low cost architecture for a quad-mode frontend of a communication device. In particular, the exemplary embodiments use diplexers to reduce the complexity of frontend switches and transceivers.
摘要翻译：所描述的示例性实施例为通信设备的四模前端提供了低成本架构。具体地，示例性实施例使用双工器来降低前端交换机和收发器的复杂性。

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