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公开(公告)号：US12206182B2
公开(公告)日：2025-01-21
申请号：US18691092
申请日：2021-09-29
Applicant: SAAB AB
Inventor： Henrik Frid
Abstract: A method for excitation of an array antenna across a specified bandwidth is disclosed. The specified bandwidth comprises M sample points, M being a positive integer >1, and the array antenna comprises N antenna elements, N being a positive integer ≥2. The method comprises forming a first matrix B(ω) defining an allowed frequency variation for an excitation coefficient for each antenna element, and forming a second matrix defining far field data for each antenna element at each sample point. Further the method comprises optimizing each excitation coefficient based on the formed first matrix and the formed second matrix, and controlling an excitation of the N antenna elements based on the optimized excitation coefficients. Hereby presenting a method for wideband optimization of the excitation coefficients for an array antenna.
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132.发明授权公开(公告)号：US12099130B2
公开(公告)日：2024-09-24
申请号：US18686754
申请日：2022-08-18
Applicant: SAAB AB
Inventor： Anders Höök
Abstract: An antenna arrangement (1) comprising an antenna array is disclosed. The antenna array comprises N antenna elements (2) (N being an integer ≥3). Moreover, each antenna element is connected to an electronics module (3) out of P electronics modules, P being an integer such that 3≤P≤N, where each electronics module is configured to generate an output signal indicative of a signal received by a corresponding one or more antenna elements. The antenna arrangement further comprises control circuitry (10) connected to the antenna array. The control circuitry is configured to receive each output signal, compute a sum of cross-correlations between each output signal and a set of other output signals originating from other corresponding antenna elements, and determine at least one angle of a direction of arrival of the electromagnetic waves relative to the antenna array based on the computed sum.
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公开(公告)号：US12077317B2
公开(公告)日：2024-09-03
申请号：US17620431
申请日：2020-06-17
Applicant: SAAB AB
Inventor： Anna-Karin Holmer , Johan Zanden , Stefan Andersson
CPC classification number: B64F1/20 , G08G5/0026 , G08G5/025
Abstract: The present disclosure relates to a landing assistance system and method (100) for assisting an airborne vehicle (1) during landing on a landing area (2). The landing assistance system (100) provides the airborne vehicle (1) with light signals. The landing assistance system comprises at least one geographically positioned light emitter (4, 6, 8) arranged at near ground level on the landing area (2). At least one first light emitter (6) of the at least one geographically positioned light emitter (4, 6, 8) is arranged to emit light to a designated position in space. The light comprises at least three light beams (B1-B3), wherein a first beam (B1) being a central beam, which indicates a designated glideslope, and at least a second beam (B2) and third beam (B3) indicating that said airborne vehicle (1) is positioned under or above the designated glideslope, respectively.
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134.发明公开公开(公告)号：US20240272261A1
公开(公告)日：2024-08-15
申请号：US18686754
申请日：2022-08-18
Applicant: SAAB AB
Inventor： Anders HÖÖK
Abstract: An antenna arrangement (1) comprising an antenna array is disclosed. The antenna array comprises N antenna elements (2) (N being an integer ≥3). Moreover, each antenna element is connected to an electronics module (3) out of P electronics modules, P being an integer such that 3≤P≤N, where each electronics module is configured to generate an output signal indicative of a signal received by a corresponding one or more antenna elements. The antenna arrangement further comprises control circuitry (10) connected to the antenna array. The control circuitry is configured to receive each output signal, compute a sum of cross-correlations between each output signal and a set of other output signals originating from other corresponding antenna elements, and determine at least one angle of a direction of arrival of the electromagnetic waves relative to the antenna array based on the computed sum.
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公开(公告)号：US12061492B2
公开(公告)日：2024-08-13
申请号：US17633605
申请日：2019-08-13
Applicant: SAAB AB
Inventor： Anders Rosengren
Abstract: An electronic circuit is included, which acts as a zener diode below a zener voltage, and as a constant current source above the zener voltage comprising an input terminal, an output terminal, a first resistor, a second resistor, a third resistor, a fourth resistor, a first NPN-transistor, a second NPN-transistor, a PNP-transistor, and a voltage reference, where the zener voltage of the electronic circuit can be selected by a user.
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Patent Agency Ranking
公开(公告)号：US12031871B2
公开(公告)日：2024-07-09
申请号：US17647190
申请日：2022-01-06
Applicant: SAAB AB
Inventor： Roy Josefsson , Daniel Eckerstroem
CPC classification number: G01K11/3206 , G01D3/10 , G01D5/35316 , G01D5/35387 , G01D5/3539 , G01K11/32 , G01L1/246 , G01M3/002 , G01M3/38
Abstract: A method is provided for determining temperature changes of an optical fibre having Fiber Bragg Grating patterns provided in at least one portion of the optical fibre. The method involves: emitting light into the optical fibre in a first direction from a first detector arrangement, receiving reflections from the patterns of such emitted light by the first detector arrangement, and processing the reflections for determining a current temperature change related to the optical fibre; and on the basis of predetermined criteria, emitting light into the optical fibre in an opposite, second, direction from a second detector arrangement, receiving reflections from the patterns of such emitted light by the second detector arrangement, and processing the reflections for determining a current temperature change related to the optical fibre. A computer program product comprising program code for implementing the above-described method is also provided, along with an associated system and platform.
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137.发明授权公开(公告)号：US11962059B2
公开(公告)日：2024-04-16
申请号：US17250560
申请日：2018-08-29
Applicant: SAAB AB
Inventor： Magnus Isacsson
Abstract: Method of operating a power combiner network (1), the power combiner network (1) comprising a power combiner device (10) having N secondary ports (11(1, 2, N)) combining into one primary port (12), wherein respective N secondary port (11(1, 2, . . . , N)) is provided with a phase shifter arrangement (13) and a load control arrangement (14). Respective phase shifter arrangement (13) is configured to set a phase of a signal fed through respective N secondary port (11(1, 2, . . . , N)). Respective load control arrangement (14) is configured to set the N secondary ports (11(1, 2, . . . , N)) in an active or in an inactive operation mode. For I inactive secondary ports (11(1)) the load control arrangement (14) is further configured to set a phase of the signal reflected from the I inactive secondary ports (11(1)). The method comprises the method steps of; step A (100), selecting which of the N secondary ports (11(1, 2, . . . , N)) that should be set in an inactive operation mode and which of the N secondary ports (11(1, 2, . . . , N)) that should be set in an active operation mode, step B (110), setting selected I inactive secondary ports (11(1)) in an inactive operation mode by means of the load control arrangement (14), step C (120), retrieving a phase required for respective I inactive secondary port (11(1)) and retrieving a phase required for respective A active secondary port (11(2)) in order for respective A active secondary port (11(2)) to minimize the reflected signal from the power combiner device (10) and provide desired power to the primary port (12), step D (130), setting respective load control arrangement (14) for respective I inactive secondary port (11(1)) according to respective retrieved phase, and step E (140), setting respective phase shifter arrangement (13) for respective A active secondary port (11(2)) according to respective retrieved phase.
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公开(公告)号：US20240035790A1
公开(公告)日：2024-02-01
申请号：US18256294
申请日：2021-12-06
Applicant: SAAB AB
Inventor： Johnny VESTLUND , Olov THOR
IPC: F42B12/32
CPC classification number: F42B12/32
Abstract: The present invention relates to a fragmentation warhead, including: an inner casing accommodating explosive charge; a fragmentation casing at least partly surrounding the inner casing; and an outer casing arranged outside the inner casing and the fragmentation casing; wherein the inner casing includes a front liner and a rear liner, which are connected to each other and wherein the fragmentation casing comprises a molded casing with integrated metal elements.
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139.发明公开公开(公告)号：US20230391435A1
公开(公告)日：2023-12-07
申请号：US18259955
申请日：2022-01-19
Applicant: SAAB AB
Inventor： Anders RYDELL , Torbjörn GREEN
CPC classification number: B63G8/22 , B63G8/001 , B63G8/04 , F42B19/125 , B63G2008/002
Abstract: The present disclosure relates to a nose arrangement (100) for an underwater vehicle (10). The nose arrangement comprises a first separation section (110) comprising a first inflatable structure (113) and a second inflatable structure (114) arranged within the first inflatable structure (113). The first separation section (110) is arranged store the first inflatable structure (113) and the second inflatable structure (114) in a first state, and to inflate the first inflatable structure (113) and the second inflatable structure (114) in a second state. The first inflatable structure (113) is arranged to protrude along the longitudinal axis of the nose arrangement and underwater vehicle in the second state. The disclosure also relates to a method for deploying a nose arrangement (100) of an underwater vehicle.
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140.发明授权公开(公告)号：US11686643B2
公开(公告)日：2023-06-27
申请号：US17247753
申请日：2020-12-22
Applicant: SAAB AB
Inventor： Daniel Eckerstroem , Mats Forselius , David Esselius
IPC: G01M3/04 , G01K11/3206 , G02B6/02
CPC classification number: G01M3/04 , G01K11/3206 , G02B6/02076
Abstract: The present disclosure relates to an arrangement (100) for obtaining a quantity related to a temperature along a part of an optical fibre (110). The arrangement comprises a light emitter (120) arranged to emit light into the optical fibre (110). The optical fibre is at at least one location along said part of the optical fibre provided with a Fibre Bragg Gratings, FBGs (111, 112, 113), wherein the FBGs are arranged to reflect light within a predetermined wavelength range. The arrangement further comprises a detector (160) arranged to receive and detect the reflected light, a first optical shutter (130) arranged in the optical path after the light emitter. The first optical shutter is arranged to be opened and closed in order to let the emitted light through and into the optical fibre (110), a second optical shutter (150) arranged to be opened and closed in order to let the reflected light through, and an optical circulator (140) having a first, a second and a third port. The optical circulator is operatively connected to the first optical shutter (130) at the first port, to the part of the optical fibre provided with the FBGs (111, 112) at the second port, and to the second optical shutter (150) at the third port. A control unit (180) is arranged to control the first optical shutter (130) and the second optical shutter (150). The control unit (180) is arranged to coordinate the timing of the opening of the first optical shutter (130) and the second optical shutter (150), respectively.
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