公开(公告)号：US20240266755A1

公开(公告)日：2024-08-08

申请号：US18691092

申请日：2021-09-29

Applicant: SAAB AB

Inventor： Henrik FRID

IPC: H01Q21/22 ,  H01Q1/28 ,  H01Q1/32 ,  H01Q3/28 ,  H01Q3/36

CPC classification number: H01Q21/22 ,  H01Q3/28 ,  H01Q3/36 ,  H01Q1/28 ,  H01Q1/32

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.

公开(公告)号：US20240205856A1

公开(公告)日：2024-06-20

申请号：US18574003

申请日：2022-06-21

Applicant: SAAB AB

Inventor： Thomas WALLIN ,  Gabriel GITYE ,  Rune OLSSON

IPC: H04W56/00

CPC classification number: H04W56/005

Abstract: The present disclosure relates to a method for synchronizing time alignment in a multi-channel radio frequency receiving system, the method including injecting an amplitude modulated reference signal into each channel in the multi-channel receiver at a location associated with each antenna input. Further, the method includes the steps of detecting a position of the reference signal within a time sample window and determining propagation time difference between each channel within the receiver electronics. Further, the method includes the steps of determining adjustment parameters, for synchronizing time alignment, for each channel and adjusting the channels in the time domain in accordance with the determined adjustment parameters of synchronization for each channel.

公开(公告)号：US20240202968A1

公开(公告)日：2024-06-20

申请号：US18553101

申请日：2022-03-29

Applicant: SAAB AB

Inventor： Linnea NILSSON ,  Jimmy JONSSON ,  Per-Olof PERSSON

IPC: G06T7/73 ,  F41G3/02 ,  F41G3/22 ,  G06V10/776 ,  G06V20/13 ,  G06V20/56 ,  H04N23/695 ,  H04N23/90

CPC classification number: G06T7/73 ,  F41G3/22 ,  G06V10/776 ,  G06V20/13 ,  G06V20/56 ,  H04N23/695 ,  H04N23/90 ,  F41G3/02 ,  G06T2207/10032 ,  G06T2207/30184 ,  G06T2207/30244 ,  G06T2207/30252

Abstract: The present disclosure relates to a method for determining a direction at a position (211), the method (100) comprises obtaining (110) an orthorectified photo (210) of a region of Earth's surface comprising the position (211), and a coordinate system for the orthorectified photo (210); identifying (120) the position (211) in the orthorectified photo (210); identifying (130) a reference object (212) in the orthorectified photo (210); determining (140) a reference direction (215) between the position (211) and the identified reference object (212); capturing (150) at least one digital photo (220; 230) at the position (211) with a calibrated digital camera (331), wherein at least one of the at least one captured digital photo (220) depicts the reference object (222); and determining (190) the direction based on the at least one captured digital photo (220; 230) and the determined reference direction (215), wherein the determined direction is based on at least one pixel coordinate corresponding to the depicted reference object (222) in the at least one captured digital photo (220) depicting the reference object (222).

公开(公告)号：US11993356B2

公开(公告)日：2024-05-28

申请号：US18259955

申请日：2022-01-19

Applicant: SAAB AB

Inventor： Anders Rydell ,  Torbjörn Green

IPC: B63G8/22 ,  B63G8/00 ,  B63G8/04 ,  F42B19/12

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.

公开(公告)号：US20240170850A1

公开(公告)日：2024-05-23

申请号：US18552712

申请日：2022-04-13

Applicant: SAAB AB

Inventor： Martin BLENNIUS ,  Daniel NYBERG

IPC: H01Q9/04 ,  H01Q21/00 ,  H01Q21/08

CPC classification number: H01Q9/0457 ,  H01Q21/0006 ,  H01Q21/08

Abstract: The present disclosure relates to an antenna arrangement including a sheet of dielectric having a connecting surface, the connecting surface including at least one grounding pad and a through-hole and an antenna element structure. The antenna arrangement further includes a launch pin including a conductive element and a dielectric element, wherein the conductive element includes a first portion having a first diameter, the first portion extending to a second portion having a second diameter, the second diameter being greater than the first diameter.

公开(公告)号：US20240085159A1

公开(公告)日：2024-03-14

申请号：US18556475

申请日：2022-04-21

Applicant: SAAB AB

Inventor： Albert SWANEPOEL

IPC: F42B12/70 ,  B64D1/04 ,  F41H11/02

CPC classification number: F42B12/70 ,  B64D1/04 ,  F41H11/02

Abstract: The disclosure relates to an electronic countermeasure cartridge (6) arranged to be loaded into a countermeasure dispenser (7) in a mobile platform (1). The electronic countermeasure cartridge (6) comprises an electromagnetic transmitting means (8), an electric energy storage (9) arranged to supply the electromagnetic transmitting means (8) with electric energy and a trigger device (10) arranged to trigger a transmission of electromagnetic radiation from the electromagnetic transmitting means (8) upon detection of an incoming threat (2). The transmitted electromagnetic radiation is arranged to irradiate an electromagnetically reflective material (3) dispensed from the countermeasure dispenser (7). The disclosure also relates to a method for providing threat protection for a platform (1) and to a countermeasure system comprising a countermeasure dispenser (7).

公开(公告)号：US11919641B2

公开(公告)日：2024-03-05

申请号：US17257949

申请日：2018-08-14

Applicant: SAAB AB

Inventor： Gunnar Bystroem

IPC: B64D1/02

CPC classification number: B64D1/02

Abstract: The present invention concerns a method for launching a payload (3) by means of an arrangement (1), which is configured for storing and launching a payload (3). A launch compartment (5) of the arrangement (1) is configured to eject the payload (3) from the launch compartment (5) via a push-out chamber (7) to an airflow (AF), which during use of the arrangement (1) flows over an aerodynamic surface (9) of the arrangement (1). An air intake (13) is formed in the aerodynamic surface (9) and is coupled to the push-out chamber (7) and/or launch compartment (5) via an internal air transfer arrangement (17) comprising an openable closure member (11) configured to close and open the internal air transfer arrangement (17).

公开(公告)号：US20240072405A1

公开(公告)日：2024-02-29

申请号：US18262260

申请日：2022-01-12

Applicant: SAAB AB

Inventor： Sten GUNNARSSON ,  Dan KUYLENSTIERNA

IPC: H01P5/10 ,  H01P5/12 ,  H03H7/42

CPC classification number: H01P5/10 ,  H01P5/12 ,  H03H7/422

Abstract: A balun circuit is disclosed. The balun circuit has an unbalanced port and a balanced port, wherein the balanced port comprises a first terminal, and a second terminal. The balun circuit further comprises a main line having a first end and a second end, the first end being coupled to the unbalanced port. Moreover, the balun circuit comprises a first sub-line electromagnetically coupled to the main line, the first sub-line having a first end and a second end, wherein the first end of the first sub-line is coupled to the first terminal of the balanced port. The balun circuit further comprises a second sub-line electromagnetically coupled to the main line, the second sub-line having a first end and a second end, wherein the first end of the second sub-line is coupled to the second terminal of the balanced port.

公开(公告)号：US20240039208A1

公开(公告)日：2024-02-01

申请号：US18262089

申请日：2022-01-17

Applicant: SAAB AB

Inventor： David SMITH ,  Henrik SUNDBÄCK

IPC: H01R13/53 ,  H01R31/06 ,  H01R13/52

CPC classification number: H01R13/53 ,  H01R31/06 ,  H01R13/5205

Abstract: The present disclosure relates to a high voltage adapter (1) for insertion into an adapter socket (2) in a high voltage unit (10), the adapter (1) comprises an oblong cylindrical main body (3) having a first outer diameter (D1), the main body (3) comprising a first circumferential portion (3′), the first circumferential portion (3′) having a second outer diameter (D2), wherein the second outer diameter (D2) is greater than the first outer diameter (D1). Further, the adapter (1) comprises a first threaded female portion (4) extending from a first base (5) of the main body (3) and a second threaded female portion (6) extending from an opposing second base (7) of the main body (3), each threaded female portion (4, 6) extending perpendicular to each corresponding base (5, 7) into the main body (3). Moreover, each threaded female portion (4, 6) is arranged to receive a threaded male connector (17, 18), so to transfer voltage signals from a first environment to a second environment. Also, the female portions (4, 6) extend towards each other and are separated by an inner wall (9).

公开(公告)号：US20240014566A1

公开(公告)日：2024-01-11

申请号：US18041810

申请日：2021-08-19

Applicant: SAAB AB

Inventor： Henri KÄHKÖNEN ,  Juha ALA-LAURINAHO ,  Ville VIIKARI

IPC: H01Q13/08 ,  H01Q21/06

CPC classification number: H01Q13/085 ,  H01Q21/064

Abstract: The present disclosure relates to an antenna array including an integral antenna element structure mounted on a substrate. The integral antenna element structure includes a first set of antenna elements and a second set of antenna elements. Each antenna element including a first body and an adjacent second body. The second body is branched into a first leg and a second leg, wherein a transition pin forms an integral part with said first leg. The first set, and second sets of antenna elements are arranged such that the first body and the second body of each adjacent antenna element form a common tapered structure.