Patents by Inventor Rolf Jakoby
Rolf Jakoby 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: 11901160Abstract: A radio-frequency (RF) power variable capacitor capable of operating at, at least, 50 watts in the MHz range. The capacitor has a composite HDK-NDK ceramic dielectric. The HDK (high dielectric constant) component comprises an active matrix of barium strontium titanate, for example. Acoustic resonances are reduced or eliminated by the addition of a metal or metalloid oxide such as magnesium borate (NDK—low dielectric constant), which acts as an acoustic resonance reduction agent (ARRA) in the RF power domain. The acoustic resonances which previously occurred under bias voltage 500 V or 1100 V in prior art RF power variable capacitors are eliminated by the addition of the ARRA.Type: GrantFiled: March 3, 2020Date of Patent: February 13, 2024Assignee: Comet AGInventors: Thomas Fink, Kevin Häuser, Holger Maune, Daniel Kienemund, Joachim Binder, Rolf Jakoby, Nicole Bohn
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Publication number: 20230081571Abstract: A dual-mode microwave applicator for treating tissue comprises a control unit, a rod-shaped element, a coaxial line, and a metal sleeve. The control unit controls the applicator in an application mode and a sensing mode. In the application mode microwave radiation is applied and during the sensing mode tumorous tissue is detected. The rod-shaped element comprises a tip. The coaxial line is formed in the rod-shaped element to relay microwaves to the tip for treatment of the tissue. The coaxial line comprises an inner conductor and an outer conductor. The outer conductor includes a slot of a slot length formed at a slot distance from the tip. The metal sleeve at a sleeve distance from the slot. The sleeve distance is about 0.55 mm, the slot length is about 1.75 mm, and the slot distance is about 7.7 mm.Type: ApplicationFiled: September 11, 2022Publication date: March 16, 2023Applicant: Technische Universität DarmstadtInventors: Carolin HESSINGER, Martin SCHÜßLER, Tobias Markus PARAVICINI, Rolf JAKOBY
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Publication number: 20220189739Abstract: A radio-frequency (RF) power variable capacitor capable of operating at, at least, 50 watts in the MHz range. The capacitor has a composite HDK-NDK ceramic dielectric. The HDK (high dielectric constant) component comprises an active matrix of barium strontium titanate, for example. Acoustic resonances are reduced or eliminated by the addition of a metal or metalloid oxide such as magnesium borate (NDK—low dielectric constant), which acts as an acoustic resonance reduction agent (ARRA) in the RF power domain. The acoustic resonances which previously occurred under bias voltage 500 V or 1100 V in prior art RF power variable capacitors are eliminated by the addition of the ARRA.Type: ApplicationFiled: March 3, 2020Publication date: June 16, 2022Inventors: Thomas Fink, Kevin Häuser, Holger Maune, Daniel Kienemund, Joachim Binder, Rolf Jakoby, Nicole Bohn
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Patent number: 11152714Abstract: A two-dimensional (2-D) beam steerable phased array antenna is presented comprising a continuously electronically steerable material including a tunable material or a variable dielectric material, preferred a liquid crystal material. A compact antenna architecture including a patch antenna array, tunable phase shifters, a feed network and a bias network is proposed. Similar to the LC display, the proposed antenna is fabricated by using automated manufacturing techniques and therefore the fabrication costs are reduced considerably.Type: GrantFiled: May 3, 2019Date of Patent: October 19, 2021Assignee: Alcan Systems GmbHInventors: Rolf Jakoby, Onur Hamza Karabey, Felix Goelden, Atsutaka Manabe
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Publication number: 20210313689Abstract: An antenna array has a signal distribution region and a signal emission region. The signal distribution region has a distribution body made from a dielectric material which converts an information signal, fed into an infeed side thereof, into a spatially distributed signal distribution on an opposite distribution side. The signal emission region has a plurality of signal emission elements distributed over the distribution side. The signal emission elements protrude from the distribution body. At least one signal emission element has a phase shift region, in which a phase shift material with an electrically influenceable permittivity is arranged in the signal emission element. By applying a phase shift voltage between at least one pair of electrodes, the permittivity of the phase shift material is influenced and thereby the propagation speed of an electromagnetic signal in the phase shift region is changed.Type: ApplicationFiled: August 9, 2019Publication date: October 7, 2021Applicant: ALCAN Systems GmbHInventors: Roland REESE, Matthias JOST, Matthias NICKEL, Holger MAUNE, Rolf JAKOBY, Henning TESMER, Ersin POLAT
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Patent number: 10629973Abstract: A phase shift device includes a planar transmission line that is formed by a signal electrode and a ground electrode which are separated by a dielectric substance, whereby the signal electrode of the planar transmission line is divided into several pieces and includes overlapping areas of adjacent pieces that are filled with a tunable liquid crystal material, thereby forming a dielectric tunable component (varactor) with a metal-insulator-metal type capacitor. The several pieces of the signal electrode are arranged at two or more different distance levels with respect to the ground electrode. The tunable liquid crystal material is arranged as a continuous layer between several pieces of the signal electrode that are arranged at two different distance levels.Type: GrantFiled: November 20, 2018Date of Patent: April 21, 2020Assignee: ALCAN Systems GmbHInventors: Rolf Jakoby, Onur Hamza Karabey, Wenjuan Hu
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Publication number: 20190260139Abstract: A two-dimensional (2-D) beam steerable phased array antenna is presented comprising a continuously electronically steerable material including a tunable material or a variable dielectric material, preferred a liquid crystal material. A compact antenna architecture including a patch antenna array, tunable phase shifters, a feed network and a bias network is proposed. Similar to the LC display, the proposed antenna is fabricated by using automated manufacturing techniques and therefore the fabrication costs are reduced considerably.Type: ApplicationFiled: May 3, 2019Publication date: August 22, 2019Applicant: Alcan Systems GmbHInventors: Rolf JAKOBY, Onur Hamza KARABEY, Felix GOELDEN, Atsutaka MANABE
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Patent number: 10320089Abstract: A two-dimensional (2-D) beam steerable phased array antenna is presented comprising a continuously electronically steerable material including a tunable material or a variable dielectric material, preferred a liquid crystal material. A compact antenna architecture including a patch antenna array, tunable phase shifters, a feed network and a bias network is proposed. Similar to the LC display, the proposed antenna is fabricated by using automated manufacturing techniques and therefore the fabrication costs are reduced considerably.Type: GrantFiled: September 12, 2012Date of Patent: June 11, 2019Assignee: Alcan Systems GmbHInventors: Rolf Jakoby, Onur Hamza Karabey, Felix Goelden, Atsutaka Manabe
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Publication number: 20190103644Abstract: A phase shift device includes a planar transmission line that is formed by a signal electrode and a ground electrode which are separated by a dielectric substance, whereby the signal electrode of the planar transmission line is divided into several pieces and includes overlapping areas of adjacent pieces that are filled with a tunable liquid crystal material, thereby forming a dielectric tunable component (varactor) with a metal-insulator-metal type capacitor. The several pieces of the signal electrode are arranged at two or more different distance levels with respect to the ground electrode. The tunable liquid crystal material is arranged as a continuous layer between several pieces of the signal electrode that are arranged at two different distance levels.Type: ApplicationFiled: November 20, 2018Publication date: April 4, 2019Applicant: ALCAN Systems GmbHInventors: Rolf JAKOBY, Onur Hamza KARABEY, Wenjuan Hu
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Patent number: 10141620Abstract: A phase shift device includes a planar transmission line that is formed by a signal electrode and a ground electrode which are separated by a dielectric substance, whereby the signal electrode of the planar transmission line is divided into several pieces and includes overlapping areas of adjacent pieces that are filled with a tunable liquid crystal material, thereby forming a dielectric tunable component (varactor) with a metal-insulator-metal type capacitor. The several pieces of the signal electrode are arranged at two or more different distance levels with respect to the ground electrode. The tunable liquid crystal material is arranged as a continuous layer between several pieces of the signal electrode that are arranged at two different distance levels.Type: GrantFiled: February 14, 2014Date of Patent: November 27, 2018Assignee: ALCAN Systems GmbHInventors: Rolf Jakoby, Onur Hamza Karabey, Wenjuan Hu
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Publication number: 20150380789Abstract: A phase shift device includes a planar transmission line that is formed by a signal electrode and a ground electrode which are separated by a dielectric substance, whereby the signal electrode of the planar transmission line is divided into several pieces and includes overlapping areas of adjacent pieces that are filled with a tunable liquid crystal material, thereby forming a dielectric tunable component (varactor) with a metal-insulator-metal type capacitor. The several pieces of the signal electrode are arranged at two or more different distance levels with respect to the ground electrode. The tunable liquid crystal material is arranged as a continuous layer between several pieces of the signal electrode that are arranged at two different distance levels.Type: ApplicationFiled: February 14, 2014Publication date: December 31, 2015Applicant: TECHNISCHE UNIVERSITÄT DARMSTADTInventors: Rolf JAKOBY, Onur Hamza KARABEY, Hu WENJUAN
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Publication number: 20140266897Abstract: A two-dimensional (2-D) beam steerable phased array antenna is presented comprising a continuously electronically steerable material including a tunable material or a variable dielectric material, preferred a liquid crystal material. A compact antenna architecture including a patch antenna array, tunable phase shifters, a feed network and a bias network is proposed. Similar to the LC display, the proposed antenna is fabricated by using automated manufacturing techniques and therefore the fabrication costs are reduced considerably.Type: ApplicationFiled: September 12, 2012Publication date: September 18, 2014Applicants: MERCK PATENT GMBH, TECHNISCHE UNIVERSITAT DARMSTADTInventors: Rolf Jakoby, Onur Hamza Karabey, Felix Goelden, Atsutaka Manabe
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Patent number: 8618817Abstract: The invention relates to a device for determining at least one parameter of at least one medium, said medium being introducible into at least one measuring path. An electric and/or electromagnetic field can be partially coupled into or out of the medium by passing at least one electric and/or electromagnetic signal into the measuring path. The measuring path comprises at least one line arrangement having at least two elementary cells arranged along the measuring path, said elementary cells comprising at least one electric path from at least one input to at least one output and comprising at least one respective capacitative element. The electrical properties of the capacitative element can by be modified by the medium. The electric and/or the electromagnetic signal can be applied to the input of a first elementary cell and the output of the first elementary cell can be connected to the input of a second elementary cell.Type: GrantFiled: November 7, 2007Date of Patent: December 31, 2013Assignee: Technische Universitaet DarmstadtInventors: Rolf Jakoby, Martin Schuessler, Andreas Penirschke, Holger Maune
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Patent number: 7910510Abstract: The present invention relates to dielectric ceramics, thin and/or thick layers produced therefrom and a method for the production thereof and the use of the dielectrics and of the thin and/or thick layers.Type: GrantFiled: April 16, 2007Date of Patent: March 22, 2011Assignee: Forschungszentrum Karlsruhe GmbHInventors: Florian Paul, Jürgen Hausselt, Joachim Binder, Hans-Joachim Ritzhaupt-Kleissl, Andre Giere, Patrick Scheele, Rolf Jakoby
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Publication number: 20100148804Abstract: The invention relates to a device for determining at least one parameter of at least one medium, said medium being introducible into at least one measuring path. An electric and/or electromagnetic field can be partially coupled into or out of the medium by passing at least one electric and/or electromagnetic signal into the measuring path. The measuring path comprises at least one line arrangement having at least two elementary cells arranged along the measuring path, said elementary cells comprising at least one electric path from at least one input to at least one output and comprising at least one respective capacitative element. The electrical properties of the capacitative element can by be modified by the medium. The electric and/or the electromagnetic signal can be applied to the input of a first elementary cell and the output of the first elementary cell can be connected to the input of a second elementary cell.Type: ApplicationFiled: November 7, 2007Publication date: June 17, 2010Applicant: TECHNISCHE UNIVERSITAET DARMSTADTInventors: Rolf Jakoby, Martin Schuessler, Andreas Penirschke, Holger Maune
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Patent number: 7712381Abstract: An antenna arrangement for coupling high frequency electromagnetic waves into or out of a pipe-shaped hollow body includes two patch antenna elements that are located opposite one another and integrated in the pipe inner wall (5) of the hollow body (1), and have curved surfaces fitted to the curved longitudinal pipe inner wall of the hollow body (1). An apparatus for mass flow measurement includes at least two of such antenna arrangements axially spaced apart from one another in a conveyor pipe section.Type: GrantFiled: November 25, 2005Date of Patent: May 11, 2010Assignee: Schenck Process GmbHInventors: Bernd Allenberg, Andreas Penirschke, Rolf Jakoby
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Publication number: 20090297804Abstract: The present invention relates to dielectric ceramics, thin and/or thick layers produced therefrom and a method for the production thereof and the use of the dielectrics and of the thin and/or thick layers.Type: ApplicationFiled: April 16, 2007Publication date: December 3, 2009Inventors: Florian Paul, Jürgen Hausselt, Joachim Binder, Hans-Joachim Ritzhaupt-Kleissl, Andre Giere, Patrick Scheele, Rolf Jakoby
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Patent number: 7361288Abstract: The present invention relates to switchable components for high-frequency technology, in particular microwave technology, which use liquid-crystalline dielectrics, to the liquid-crystal materials, to the use thereof, and to a process for the production of the components, for their operation and for improving their characteristics.Type: GrantFiled: July 12, 2004Date of Patent: April 22, 2008Assignee: Merck Patent Gesellschaft Mit Besschrankter haftungInventors: Georg Lüssem, Peter Best, Carsten Weil, Stefan Müller, Patrick Scheele, Rolf Jakoby
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Publication number: 20080087099Abstract: The invention relates to an antenna arrangement for in-coupling or out-coupling of electromagnetic high frequency waves, especially microwaves, in a pipe-shaped hollow body (1). This antenna arrangement comprises at least one flat patch element (2, 3) as a radiator element, which is applied on a dielectric substrate (8) within a pipe outer wall part (7) of the hollow body (1). The antenna arrangement is characterized in that the radiator element is integrated in the pipe inner wall (5) of the hollow body (1) and is fitted by curved surfaces to the curved longitudinal wall of the hollow body (1). In that regard, the patch element (2, 3) is embodied rectangularly, and is arranged with its longitudinal side (14) transversely to the hollow body longitudinal direction, whereby still at least one further similar second patch element (3) is integrated into the pipe inner wall (5), lying opposite to the in-feeding first patch element (2).Type: ApplicationFiled: November 25, 2005Publication date: April 17, 2008Inventors: Bernd Allenberg, Andreas Penirschke, Rolf Jakoby
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Publication number: 20050067605Abstract: The present invention relates to switchable components for high-frequency technology, in particular microwave technology, which use liquid-crystalline dielectrics, to the liquid-crystal materials, to the use thereof, and to a process for the production of the components, for their operation and for improving their characteristics.Type: ApplicationFiled: July 12, 2004Publication date: March 31, 2005Inventors: Georg Lussem, Peter Best, Carsten Weil, Stefan Muller, Patrick Scheele, Rolf Jakoby