Patents by Inventor Andreas Detlefsen
Andreas Detlefsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230076844Abstract: Semiconductor die module packages with void-defined sections in a metal structure(s) in a package substrate to reduce die-substrate mechanical stress, and related fabrication methods. To reduce die-substrate mechanical stress between the package substrate and a die(s) of the die module package, void-defined sections are formed in a metal structure(s) in a metallization layer(s) of the package substrate. The void-defined sections are formed from one or more cutouts of a metal material of the metal structure in a defined area to reduce stiffness, which also has the effect of reducing the effective coefficient of thermal. expansion (CTE) of the package substrate. The metal material remaining between the metal cutouts in a void-defined section form metal interconnects. Die interconnects can couple a die directly to the metal interconnects in the void-defined sections in the metal structure to reduce mechanical stress between the die and die interconnects to the package substrate.Type: ApplicationFiled: September 9, 2021Publication date: March 9, 2023Inventors: Andreas Detlefsen, Jeroen Bielen
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Patent number: 11063566Abstract: An RF module with improved testing capabilities is provided. The module has a first switch with signal outputs and an additional auxiliary connection connected to an auxiliary terminal. The auxiliary terminal can be connected to an RF filter while a power amplifier is decoupled from the filter.Type: GrantFiled: November 28, 2017Date of Patent: July 13, 2021Assignee: Snaptrack, Inc.Inventors: Miguel Angel Falagan Bobillo, Andreas Detlefsen
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Publication number: 20190280660Abstract: An RF module with improved testing capabilities is provided. The module has a first switch with signal outputs and an additional auxiliary connection connected to an auxiliary terminal. The auxiliary terminal can be connected to an RF filter while a power amplifier is decoupled from the filter.Type: ApplicationFiled: November 28, 2017Publication date: September 12, 2019Inventors: Miguel Angel FALAGAN BOBILLO, Andreas DETLEFSEN
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Patent number: 9247351Abstract: A bandpass filter operates with electroacoustically active components. The bandpass filter includes a first transducer segment having a spike in the insertion loss at a first frequency f1 and a second transducer segment having a spike in the insertion loss at a second frequency f2?f1. The frequencies f1 and f2 are chosen such that the insertion loss is smoothed.Type: GrantFiled: October 17, 2013Date of Patent: January 26, 2016Assignee: EPCOS AGInventors: Andreas Detlefsen, Mohamed Nizar Mellouli
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Publication number: 20150319536Abstract: A bandpass filter operates with electroacoustically active components. The bandpass filter includes a first transducer segment having a spike in the insertion loss at a first frequency f1 and a second transducer segment having a spike in the insertion loss at a second frequency f2?f1. The frequencies f1 and f2 are chosen such that the insertion loss is smoothed.Type: ApplicationFiled: October 17, 2013Publication date: November 5, 2015Inventors: Andreas Detlefsen, Mohamed Nizar Mellouli
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Patent number: 9178490Abstract: 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.Type: GrantFiled: January 18, 2011Date of Patent: November 3, 2015Assignee: EPCOS AGInventors: Andreas Detlefsen, Ravi Challa
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Patent number: 9130538Abstract: 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.Type: GrantFiled: May 18, 2011Date of Patent: September 8, 2015Assignee: EPCOS AGInventors: Thomas Bauer, Andreas Detlefsen, Stephan Bolze, Ralph Durner
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Patent number: 9035726Abstract: 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.Type: GrantFiled: July 12, 2010Date of Patent: May 19, 2015Assignee: EPCOS AGInventors: Ralf Thomas, Franz Kubat, Andreas Detlefsen, Markus Hauser
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Publication number: 20130141188Abstract: 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.Type: ApplicationFiled: January 18, 2011Publication date: June 6, 2013Applicant: EPCOS AGInventors: Andreas Detlefsen, Ravi Challa
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Publication number: 20130120084Abstract: 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.Type: ApplicationFiled: May 18, 2011Publication date: May 16, 2013Applicant: EPCOS AGInventors: Thomas Bauer, Andreas Detlefsen, Stephan Bolze, Ralph Durner
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Publication number: 20120161903Abstract: 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.Type: ApplicationFiled: July 12, 2010Publication date: June 28, 2012Applicant: EPCOS AGInventors: Ralf Thomas, Franz Kubat, Andreas Detlefsen, Markus Hauser
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Patent number: 8068001Abstract: 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.Type: GrantFiled: September 21, 2005Date of Patent: November 29, 2011Assignee: EPCOS AGInventor: Andreas Detlefsen
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Patent number: 7969259Abstract: 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.Type: GrantFiled: December 16, 2003Date of Patent: June 28, 2011Assignee: Epcos AGInventors: Andreas Detlefsen, Peter Kirchhofer, Dietmar Ritter
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Publication number: 20080246560Abstract: 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.Type: ApplicationFiled: September 21, 2005Publication date: October 9, 2008Applicant: EPCOS AGInventor: Andreas Detlefsen
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Publication number: 20060097824Abstract: 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.Type: ApplicationFiled: December 16, 2003Publication date: May 11, 2006Inventors: Andreas Detlefsen, Peter Kirchhofer, Dietmar Ritter
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Patent number: 7042132Abstract: 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.Type: GrantFiled: March 1, 2002Date of Patent: May 9, 2006Assignee: Epcos AGInventors: Thomas Bauer, Martin Bünner, Andreas Detlefsen, Dietmar Ritter
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Patent number: 6894588Abstract: 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.Type: GrantFiled: February 14, 2003Date of Patent: May 17, 2005Assignee: EPCOS AGInventor: Andreas Detlefsen
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Publication number: 20040090145Abstract: For improved conformance of a filter operating with acoustic waves, a transducer structure is proposed 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.Type: ApplicationFiled: September 12, 2003Publication date: May 13, 2004Inventors: Thomas Bauer, Martin Bunner, Andreas Detlefsen, Dietmar Ritter
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Publication number: 20030231083Abstract: 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.Type: ApplicationFiled: February 14, 2003Publication date: December 18, 2003Inventor: Andreas Detlefsen