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公开(公告)号：US09178490B2
公开(公告)日：2015-11-03
申请号：US13521403
申请日：2011-01-18
申请人： Andreas Detlefsen , Ravi Challa
发明人： Andreas Detlefsen , Ravi Challa
CPC分类号： H03H9/64 , H03H9/0038 , H03H9/0042 , H03H9/02874 , H03H9/02952
摘要： A DMS filter has improved signal suppression in fly-back. At least two transformers of a first type are connected in parallel between a common node of the signal path and a ground connection/reference potential. A concentrated element is connected in the signal path of said transformers of the first type, so that the voltages present at the first transformers are different from each other.
摘要翻译： DMS滤波器具有改进的反向信号抑制。 第一类型的至少两个变压器并联连接在信号路径的公共节点和接地连接/参考电位之间。 集中元件连接在第一类型的变压器的信号路径中，使得存在于第一变压器处的电压彼此不同。
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公开(公告)号：US20060097824A1
公开(公告)日：2006-05-11
申请号：US10544136
申请日：2003-12-16
IPC分类号： H03H9/64
CPC分类号： H03H9/0057 , H03H9/0061 , H03H9/14588 , H03H9/6469 , H03H9/6483
摘要： An apparatus includes a piezoelectric substrate having a signal line with a first electrical port and a second electrical port, and a first partial filter connected in series with a second partial filter. The partial filters are arranged between the electrical ports. The first partial filter includes a first serial transducer and a second serial transducer located in an acoustic path and in series branches of the signal line. The serial transducers are acoustically coupled with one another. The second partial filter includes a coupler transducer and an end-positioned transducer that are located in a double mode surface acoustic wave (DMS) path. The end-positioned transducer is positioned at an end of the signal line.
摘要翻译： 一种装置包括具有与第一电气端口和第二电气端口的信号线的压电基板，以及与第二部分滤波器串联连接的第一部分滤波器。 部分滤波器布置在电气端口之间。 第一部分滤波器包括位于声学路径和信号线的串联分支中的第一串联换能器和第二串联换能器。 串联传感器彼此声学耦合。 第二部分滤波器包括位于双模声表面波（DMS）路径中的耦合器换能器和终端定位换能器。 终端传感器位于信号线的一端。
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公开(公告)号：US09035726B2
公开(公告)日：2015-05-19
申请号：US13383071
申请日：2010-07-12
申请人： Ralf Thomas , Franz Kubat , Andreas Detlefsen , Markus Hauser
发明人： Ralf Thomas , Franz Kubat , Andreas Detlefsen , Markus Hauser
CPC分类号： H03H9/02921 , H03H9/6433
摘要： A SAW filter circuit having improved ESD resistance is specified, in which a series interconnection composed of SAW resonators is interconnected between a first signal port and a dual-mode SAW filter port. The static capacitance of the series interconnection is at most four times the static capacitance of the dual-mode SAW filter transducers interconnected therewith.
摘要翻译： 规定了具有改进的ESD电阻的SAW滤波器电路，其中由SAW谐振器组成的串联互连在第一信号端口和双模式SAW滤波器端口之间互连。 串联互连的静态电容至少是与其相互连接的双模式SAW滤波器的静态电容的四倍。
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公开(公告)号：US20080246560A1
公开(公告)日：2008-10-09
申请号：US11576732
申请日：2005-09-21
申请人： Andreas Detlefsen
发明人： Andreas Detlefsen
CPC分类号： H03H9/0028 , H03H9/0038 , H03H9/0042 , H03H9/14588 , H03H9/14591 , H03H9/6469
摘要： A surface acoustic wave (SAW) filter includes at least one first electroacoustic transducer, and at least one second electroacoustic transducer. The at least one first electroacoustic transducer and the at least one second electroacoustic transducer are side-by-side inside an acoustic track having an aperture A0. The at least one first electroacoustic transducer is connected to an electrical output of the SAW filter, and the at least one second electroacoustic transducer is connected to an electrical input of the SAW filter.
摘要翻译： 表面声波（SAW）滤波器包括至少一个第一电声换能器和至少一个第二电声换能器。 所述至少一个第一电声换能器和所述至少一个第二电声换能器并排在具有孔A 0 0的声轨内。 至少一个第一电声换能器连接到SAW滤波器的电输出，并且至少一个第二电声换能器连接到SAW滤波器的电输入端。
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公开(公告)号：US09130538B2
公开(公告)日：2015-09-08
申请号：US13697328
申请日：2011-05-18
申请人： Thomas Bauer , Andreas Detlefsen , Stephan Bolze , Ralph Durner
发明人： Thomas Bauer , Andreas Detlefsen , Stephan Bolze , Ralph Durner
CPC分类号： H03H9/54 , H03H9/0057 , H03H9/0085
摘要： A SAW filter has two DMS tracks. Each DMS track includes six converters, with two converters each acting as input or output converters. The two DMS tracks are electrically connected in series by way of four pairs of coupling converters and the associated coupling lines. A common inner ground line is provided between the two DMS tracks, which extends over the entire length of the DMS tracks and crosses the coupling lines. The input converters of the first DMS track are connected to an asymmetrical port, while the output converters of the second DMS track are connected to a symmetrical port.
摘要翻译： SAW滤波器具有两个DMS轨道。 每个DMS轨道包括六个转换器，两个转换器各自用作输入或输出转换器。 两个DMS轨道通过四对耦合转换器和相关耦合线路串联电连接。 在两条DMS轨道之间提供了一条共同的内部接地线，该轨道在DMS轨道的整个长度上延伸并且穿过耦合线。 第一DMS轨道的输入转换器连接到不对称端口，而第二DMS轨道的输出转换器连接到对称端口。
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公开(公告)号：US20120161903A1
公开(公告)日：2012-06-28
申请号：US13383071
申请日：2010-07-12
申请人： Ralf Thomas , Franz Kubat , Andreas Detlefsen , Markus Hauser
发明人： Ralf Thomas , Franz Kubat , Andreas Detlefsen , Markus Hauser
IPC分类号： H03H9/64
CPC分类号： H03H9/02921 , H03H9/6433
摘要： A SAW filter circuit having improved ESD resistance is specified, in which a series interconnection composed of SAW resonators is interconnected between a first signal port and a DMS port. The static capacitance of the series interconnection is at most four times the static capacitance of the DMS transducers interconnected therewith.
摘要翻译： 规定了具有改善的ESD电阻的SAW滤波器电路，其中由SAW谐振器组成的串联互连在第一信号端口和DMS端口之间互连。 串联互连的静态电容至少是与其互连的DMS换能器的静态电容的四倍。
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公开(公告)号：US08068001B2
公开(公告)日：2011-11-29
申请号：US11576732
申请日：2005-09-21
申请人： Andreas Detlefsen
发明人： Andreas Detlefsen
IPC分类号： H03H9/64
CPC分类号： H03H9/0028 , H03H9/0038 , H03H9/0042 , H03H9/14588 , H03H9/14591 , H03H9/6469
摘要： A surface acoustic wave (SAW) filter includes at least one first electroacoustic transducer, and at least one second electroacoustic transducer. The at least one first electroacoustic transducer and the at least one second electroacoustic transducer are side-by-side inside an acoustic path having an aperture A0. The at least one first electroacoustic transducer is connected to an electrical output of the SAW filter, and the at least one second electroacoustic transducer is connected to an electrical input of the SAW filter. At least one first electroacoustic transducer comprises a series circuit of a number of partial transducers, wherein each partial transducer has an individual aperture that is reduced in relation to the overall aperture A0, and wherein the individual apertures add up to the overall aperture.
摘要翻译： 声表面波（SAW）滤波器包括至少一个第一电声换能器和至少一个第二电声换能器。 所述至少一个第一电声换能器和所述至少一个第二电声换能器并排在具有孔A0的声路径内。 至少一个第一电声换能器连接到SAW滤波器的电输出，并且至少一个第二电声换能器连接到SAW滤波器的电输入端。 至少一个第一电声换能器包括多个部分换能器的串联电路，其中每个部分换能器具有相对于整个孔A0减小的单个孔，并且其中各个孔加到总孔上。
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公开(公告)号：US07042132B2
公开(公告)日：2006-05-09
申请号：US10471987
申请日：2002-03-01
申请人： Thomas Bauer , Martin Bünner , Andreas Detlefsen , Dietmar Ritter
发明人： Thomas Bauer , Martin Bünner , Andreas Detlefsen , Dietmar Ritter
CPC分类号： H03H9/14555
摘要： For improved conformance of a filter operating with acoustic waves, a transducer structure is provided in which the separations between respectively two adjacent electrode fingers of an inter-digital transducer (IDTv) vary over the length of the transducer. The variation thereby preferably follows a continuous distribution function. Reactance filters that are provided with such filters in the serial branch show an improved electrical conformance in the transmission range.
摘要翻译： 为了改善用声波操作的滤波器的一致性，提供了一种换能器结构，其中数字间换能器（IDT
）之间的两个相邻的电极指之间的间隔在换能器的长度上变化 。 因此，其变化优选地遵循连续分布函数。 在串行分支中提供这种滤波器的电抗滤波器在传输范围内显示出改进的电气一致性。 -
公开(公告)号：US06894588B2
公开(公告)日：2005-05-17
申请号：US10366873
申请日：2003-02-14
申请人： Andreas Detlefsen
发明人： Andreas Detlefsen
IPC分类号： H03H9/64
CPC分类号： H03H9/6483 , H03H9/643 , H03H9/6436 , H03H9/6469
摘要： For improving the adjacent channel selectivity of a resonator filter, reflectors of resonators are differently designed so that the minimums of the reflection functions of different reflectors of a resonator are shifted relative to one another and preferably compensate with the corresponding maximum of the respectively other reflection function. This reduces noise spikes at the low-frequency side of the pass-band of corresponding resonator filters and, thus, improves the adjacent channel selectivity.
摘要翻译： 为了改善谐振器滤波器的相邻信道选择性，谐振器的反射器被不同地设计，使得谐振器的不同反射器的反射函数的最小值相对于彼此移位，并且优选地以相应的其他反射函数的最大值来补偿 。 这降低了相应谐振器滤波器的通带的低频侧的噪声尖峰，并因此改善了相邻的信道选择性。
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公开(公告)号：US20130141188A1
公开(公告)日：2013-06-06
申请号：US13521403
申请日：2011-01-18
申请人： Andreas Detlefsen , Ravi Challa
发明人： Andreas Detlefsen , Ravi Challa
IPC分类号： H03H9/64
CPC分类号： H03H9/64 , H03H9/0038 , H03H9/0042 , H03H9/02874 , H03H9/02952
摘要： A DMS filter has improved signal suppression in fly-back. At least two transformers of a first type are connected in parallel between a common node of the signal path and a ground connection/reference potential. A concentrated element is connected in the signal path of said transformers of the first type, so that the voltages present at the first transformers are different from each other.
摘要翻译： DMS滤波器具有改进的反向信号抑制。 第一类型的至少两个变压器并联连接在信号路径的公共节点和接地连接/参考电位之间。 集中元件连接在第一类型的变压器的信号路径中，使得存在于第一变压器处的电压彼此不同。
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