Patents by Inventor Alexander Bahr
Alexander Bahr 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: 11901623Abstract: An antenna system includes an antenna waveguide having a waveguide surface. A set of printed electronics includes conductors deposited onto the waveguide surface of the antenna waveguide. The system further includes at least one transceiver integrated circuit (IC), the transceiver integrated circuit having a surface assembly, wherein the surface assembly is adhesively coupled to the antenna waveguide and directly connected to the waveguide surface of the antenna waveguide.Type: GrantFiled: August 18, 2021Date of Patent: February 13, 2024Assignee: Georgia Tech Research CorporationInventors: Xuanke He, Emmanouil Tentzeris, Ryan Alexander Bahr, Yunnan Fang
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Publication number: 20230261385Abstract: An antenna system includes an antenna waveguide having a waveguide surface. A set of printed electronics includes conductors deposited onto the waveguide surface of the antenna waveguide. The system further includes at least one transceiver integrated circuit (IC), the transceiver integrated circuit having a surface assembly, wherein the surface assembly is adhesively coupled to the antenna waveguide and directly connected to the waveguide surface of the antenna waveguide.Type: ApplicationFiled: August 18, 2021Publication date: August 17, 2023Inventors: Xuanke He, Emmanouil Tentzeris, Ryan Alexander Bahr, Yunnan Fang
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Publication number: 20220278233Abstract: The invention relates to a DEPFET comprising: a semiconductor substrate (100) of a first conduction type, which has a first main surface (101) and a second main surface (102), which are opposite one another; a source terminal region (1s) of a second conduction type on the first main surface (101); a drain terminal region (1d) of a second conduction type; a channel region (10), which is arranged between the source terminal region (1s) and the drain terminal region (1d); a gate electrode (11), which is separated from the channel region (10) by a gate insulator (6); a rear activation region (104) of a second conduction type, which is formed on the second main surface (102); and a substrate doping increase region (2) of a first conduction type, which is formed at least under the source terminal region (1s) and under the channel region (10), the substrate doping increase region (2) having a signal charge control region (20) of the first conduction type below the gate electrode (11), in which signal charge controlType: ApplicationFiled: May 6, 2020Publication date: September 1, 2022Applicant: Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.Inventors: Alexander Bähr, Peter Lechner, Jelena Ninkovic, Rainer Richter, Florian Schopper, Johannes Treis
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Publication number: 20220216245Abstract: An avalanche photodiode array for detecting electromagnetic radiation comprises: a semiconductor substrate (100) having a first main surface (101) and a second main surface (102), which are opposite one another, a plurality of n-doped anode regions (1) formed at the first main surface (101) and separated from one another by pixel isolation regions (7), a p-doped cathode region (3) arranged at the second main surface (102) opposite the anode regions, a drift region (4) between the plurality of anode regions (1) and the cathode region (3), and a p-doped multiplication layer (2) arranged below the plurality of anode regions (1) and below the pixel isolation regions (7), and is characterized by an n-doped field reduction layer (9) arranged below the plurality of anode regions (1) and the pixel isolation regions (7) and above the multiplication layer (2).Type: ApplicationFiled: March 30, 2020Publication date: July 7, 2022Inventors: Rainer Richter, Florian Schopper, Jelena Ninkovic, Alexander Bähr
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Patent number: 10340769Abstract: The invention relates to an auxiliary drive device (1) comprising an electric motor (10, 11); and a mechanical clutch, wherein the electric motor (10, 11) and the mechanical clutch have the same axis of rotation (R), the mechanical clutch is designed as a fluid-friction clutch (20), and the electric motor (10, 11) and the fluid-friction clutch (20) are mechanically connected to one another.Type: GrantFiled: September 14, 2016Date of Patent: July 2, 2019Assignee: BorgWarner Inc.Inventors: Alexander Bahr, Thomas Buchholz
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Publication number: 20170335901Abstract: A fluid friction clutch with a housing, a clutch plate and a reservoir that are disposed in the housing, a supply pump element rotatably coupled to the clutch plate, a supply conduit and a valve. The clutch plate and the housing form a working chamber. The supply conduit couples the reservoir to an inlet side of the working chamber. The supply pump element has a pump inlet and a pump outlet that are spaced circumferentially apart from one another about a rotational axis of the clutch plate. The pump outlet is coupled in fluid communication with the supply conduit. The valve has a valve element that is movable between a first or extended position and a second or retracted position. Placement of the valve element in the first position at least partly blocks fluid flow to the pump outlet.Type: ApplicationFiled: August 8, 2017Publication date: November 23, 2017Inventors: Thomas Buchholz, Wolfgang U. Sorg, Alexander Bahr
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Publication number: 20170077784Abstract: The invention relates to an auxiliary drive device (1) comprising an electric motor (10, 11); and a mechanical clutch, wherein the electric motor (10, 11) and the mechanical clutch have the same axis of rotation (R), the mechanical clutch is designed as a fluid-friction clutch (20), and the electric motor (10, 11) and the fluid-friction clutch (20) are mechanically connected to one another.Type: ApplicationFiled: September 14, 2016Publication date: March 16, 2017Inventors: Alexander Bahr, Thomas Buchholz
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Patent number: 9227709Abstract: The present invention relates to an underwater propelling device (10) i a stator (20) comprising circumferential arrayed coils (35) and being adapted to generate a controlled electromagnetic field along an axial direction, a shaftless propellant rotor (30) comprising: at least two magnetized ring-shaped plates, respectively an upper magnetized plate (31) and a lower magnetized plate (32), coaxially spaced-apart along said axial direction and perpendicular thereto such that said circumferential arrayed coils (35) are positioned therebetween, each plate (31, 32) defining a central aperture (31a, 32a) and having a circumferential array of radially extended magnetized poles (34) embedded therein, said magnetized poles (34) generating a magnetic field which interacts with the electromagnetic field of the stator (20) so as to cause the rotation of said plates (31, 32) about a central axis (ZZ?) parallel to said axial direction, at least one ring-shaped propeller (33) defined by its outer periphery and its innerType: GrantFiled: November 12, 2014Date of Patent: January 5, 2016Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)Inventors: Felix Schill, Alexander Bahr
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Patent number: 8106944Abstract: Described are a method and an apparatus for color-corrected underwater imaging. A range to an underwater object to be imaged is determined and control values are selected according to the range. Control values are predetermined for a number of ranges according to an optimization of a color quality factor for each range based on the spectra of the optical sources used for illumination and the wavelength-dependent optical transmission of the water for the range. The optical power of each optical source is controlled according to a respective one of the selected control values. Advantageously, an acquired image requires no color correction as the adaptive illumination compensates for the wavelength-dependent losses in the light propagation path from the optical sources to the object and from the object to the imaging device.Type: GrantFiled: January 18, 2007Date of Patent: January 31, 2012Assignee: Massachusetts Institute of TechnologyInventors: Iuliu Vasilescu, Alexander Bahr, Carrick Detweiler, Daniela Rus
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Publication number: 20080084496Abstract: Described are a method and an apparatus for color-corrected underwater imaging. A range to an underwater object to be imaged is determined and control values are selected according to the range. Control values are predetermined for a number of ranges according to an optimization of a color quality factor for each range based on the spectra of the optical sources used for illumination and the wavelength-dependent optical transmission of the water for the range. The optical power of each optical source is controlled according to a respective one of the selected control values. Advantageously, an acquired image requires no color correction as the adaptive illumination compensates for the wavelength-dependent losses in the light propagation path from the optical sources to the object and from the object to the imaging device.Type: ApplicationFiled: January 18, 2007Publication date: April 10, 2008Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Iuliu Vasilescu, Alexander Bahr, Carrick Detweiler, Daniela Rus