Patents by Inventor Uwe Dalisda
Uwe Dalisda 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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Patent number: 11456702Abstract: The invention relates to a broadband high power amplifier that comprises a signal input adapted to receive an input signal, at least one amplifier stage adapted to amplify the received input signal, a signal output adapted to output the signal amplified by the at least one amplifier stage as an output signal, a monitoring unit adapted to monitor signal characteristics of the input signal and the output signal and a control unit adapted to operate the at least one amplifier stage at an optimal operating point depending on the current signal characteristics monitored by said monitoring unit.Type: GrantFiled: July 25, 2019Date of Patent: September 27, 2022Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Thomas Witt, Florian Ohnimus, Uwe Dalisda, Wolfram Titze, Andreas Andrei, Raimon Göritz
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Publication number: 20200036334Abstract: The invention relates to a broadband high power amplifier that comprises a signal input adapted to receive an input signal, at least one amplifier stage adapted to amplify the received input signal, a signal output adapted to output the signal amplified by the at least one amplifier stage as an output signal, a monitoring unit adapted to monitor signal characteristics of the input signal and the output signal and a control unit adapted to operate the at least one amplifier stage at an optimal operating point depending on the current signal characteristics monitored by said monitoring unit.Type: ApplicationFiled: July 25, 2019Publication date: January 30, 2020Inventors: Thomas Witt, Florian Ohnimus, Uwe Dalisda, Wolfram Titze, Andreas Andrei, Raimon Göritz
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Patent number: 10447214Abstract: The present invention provides an amplifier circuit for amplifying an incoming signal, the amplifier circuit comprising at least two signal paths configured to amplify signals of different overlapping frequency bands, a signal splitter comprising an input port configured to receive the incoming signal, the signal splitter being coupled to an input side of the signal paths and configured to split the incoming signal into split signals for the signal paths, and a diplexer coupled to an output side of the signal paths and configured to combine the amplified signals and provide a combined amplified signal. Further, the present invention provides a respective method.Type: GrantFiled: January 3, 2018Date of Patent: October 15, 2019Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventors: Andreas Andrei, Klaus Sauerbier, Marco Witte, Orell Garten, Raimon Goeritz, Uwe Dalisda, Florian Ohnimus, Reimo Dueben
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Publication number: 20190052237Abstract: The present invention provides an amplifier circuit for amplifying an incoming signal, the amplifier circuit comprising at least two signal paths configured to amplify signals of different overlapping frequency bands, a signal splitter comprising an input port configured to receive the incoming signal, the signal splitter being coupled to an input side of the signal paths and configured to split the incoming signal into split signals for the signal paths, and a diplexer coupled to an output side of the signal paths and configured to combine the amplified signals and provide a combined amplified signal. Further, the present invention provides a respective method.Type: ApplicationFiled: January 3, 2018Publication date: February 14, 2019Inventors: Andreas Andrei, Klaus Sauerbier, Marco Witte, Orell Garten, Raimon Goeritz, Uwe Dalisda, Florian Ohnimus, Reimo Dueben
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Patent number: 9787262Abstract: An amplifier includes two amplifier circuits and a power splitter. The power splitter splits a signal to be amplified and generates a phase displacement of 90° in the case of a rated frequency between resulting partial signals. In this context, the amplifier circuits each amplify one of the partial signals or respectively a signal derived from one of the partial signals. The amplifier additionally contains a first delay element, which is arranged between the power splitter and one of the amplifier circuits.Type: GrantFiled: August 21, 2014Date of Patent: October 10, 2017Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventors: Lothar Schenk, Uwe Dalisda
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Patent number: 9444420Abstract: An amplifier comprises a main-amplifier circuit, an auxiliary-amplifier circuit and a signal-generating device. Output terminals of the main-amplifier circuit and of the auxiliary-amplifier circuit are connected according to the Doherty principle. The signal-generating device is configured to generate directly a main-amplifier signal as an input signal of the main-amplifier circuit and an auxiliary-amplifier signal as an input signal of the auxiliary-amplifier circuit.Type: GrantFiled: June 29, 2012Date of Patent: September 13, 2016Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Uwe Dalisda, Peter Mühlbacher
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Patent number: 9438174Abstract: An amplifier comprises a first amplifier circuit, a second amplifier circuit, a hybrid-coupler circuit and a termination. The hybrid-coupler circuit comprises an output port and an isolation port. The termination in this context is connected to the isolation port of the hybrid-coupler circuit. The termination comprises a first switch, a first capacitor and a first inductance.Type: GrantFiled: April 23, 2013Date of Patent: September 6, 2016Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Sebastian Stempfl, Bernhard Kaehs, Uwe Dalisda, Lothar Schenk
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Publication number: 20160254792Abstract: An amplifier includes two amplifier circuits and a power splitter. The power splitter splits a signal to be amplified and generates a phase displacement of 90° in the case of a rated frequency between resulting partial signals. In this context, the amplifier circuits each amplify one of the partial signals or respectively a signal derived from one of the partial signals. The amplifier additionally contains a first delay element, which is arranged between the power splitter and one of the amplifier circuits.Type: ApplicationFiled: August 21, 2014Publication date: September 1, 2016Applicant: Rohde & Schwarz GmbH & Co. KGInventors: Lothar SCHENK, Uwe DALISDA
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Publication number: 20150318828Abstract: An amplifier comprises a first amplifier circuit, a second amplifier circuit, a hybrid-coupler circuit and a termination. The hybrid-coupler circuit comprises an output port and an isolation port. The termination in this context is connected to the isolation port of the hybrid-coupler circuit. The termination comprises a first switch, a first capacitor and a first inductance.Type: ApplicationFiled: April 23, 2013Publication date: November 5, 2015Inventors: Sebastian STEMPFL, Bernhard KAEHS, Uwe DALISDA, Lothar SCHENK
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Publication number: 20140085000Abstract: An amplifier comprises a main-amplifier circuit, an auxiliary-amplifier circuit and a signal-generating device. Output terminals of the main-amplifier circuit and of the auxiliary-amplifier circuit are connected according to the Doherty principle. The signal-generating device is configured to generate directly a main-amplifier signal as an input signal of the main-amplifier circuit and an auxiliary-amplifier signal as an input signal of the auxiliary-amplifier circuit.Type: ApplicationFiled: June 29, 2012Publication date: March 27, 2014Applicant: ROHDE & SCHWARZ GMBH & CO. KGInventors: Uwe Dalisda, Peter Mühlbacher
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Patent number: 6118409Abstract: In order to inspect at least one antenna branch (A1, A2, . . . An), in particular in a vehicle, a power level to be radiated is initially fed into the antenna branch, after which a power level which is reflected in the antenna branch is sensed. Then, a relationship is formed between the fed-in power level and the reflected power level in order to obtain a quality signal indicating the quality of the antenna branch. This procedure can be carried out successively when there are a plurality of antenna branches, in order to select, as a function of the respective quality signal, that antenna branch at which the reflected power level is lowest. In this way, on the one hand, it is possible to check the matching of the antenna branches while, on the other hand, it is possible to ensure that, for example when specific antenna branches are damaged, it is always possible to find other antenna branches for satisfactory communication.Type: GrantFiled: February 12, 1998Date of Patent: September 12, 2000Assignee: Nokia Mobile Phones, Ltd.Inventors: Andreas Pietsch, Uwe Dalisda, Jukka-Matti Karhu, Jurgen Hess, Holger Christiansen
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Patent number: 5204644Abstract: In a circuit arrangement for distributing radio-frequency power supplied from a summation port to a plurality of single-ports, or for combining in a summation port radio-frequency power supplied from single-ports, the absorption resistance which is active between the single-ports is constituted by an absorption resistor coupled to ground and connected to the single-ports via a three-port network, the three-port network being designed so that within the operating frequency range the signals to the two input ports thereof are in phase opposition at the common output port.Type: GrantFiled: January 27, 1992Date of Patent: April 20, 1993Assignee: Rohde & Schwarz GmbH & Co. KGInventor: Uwe Dalisda
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Patent number: 5121083Abstract: In a high frequency transistor power amplifier comprising a plurality of power transistors which are disposed in an annular arrangement, the input terminals of the transistors are connected to a common input through separate input matching circuits and a distributor circuit. The output terminals of the power transistors, on the other hand, are combined directly in a common output connection, without any intermediate matching circuits, this common output connection being connected to a single output matching circuit common to all the power transistors.Type: GrantFiled: March 27, 1991Date of Patent: June 9, 1992Assignee: Siemens AktiengesellschaftInventors: Helmut Bauer, Uwe Dalisda