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公开(公告)号：US3478836A
公开(公告)日：1969-11-18
申请号：US3478836D
申请日：1967-04-03
Applicant: SAAB AB
Inventor： ECKERED THOMAS HARALD , SVIDEN OVE , LJUNGSTROM OLLE
CPC classification number: B60V1/16
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公开(公告)号：US3392563A
公开(公告)日：1968-07-16
申请号：US45867265
申请日：1965-05-25
Applicant: SAAB AB
Inventor： HUGO MOLLER
IPC: B21D22/12
CPC classification number: B21D22/12
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Patent Agency Ranking
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公开(公告)号：US3238642A
公开(公告)日：1966-03-08
申请号：US30657863
申请日：1963-09-04
Applicant: SAAB AB
Inventor： INGVAR OHLUND JOHN ALEX
CPC classification number: F41G3/26 , F41A33/04 , G09B9/003 , Y10T82/2535
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公开(公告)号：US12087990B2
公开(公告)日：2024-09-10
申请号：US17046840
申请日：2018-04-13
Applicant: SAAB AB
Inventor： Sten Gunnarsson
CPC classification number: H01P5/107 , H05K1/0225 , H05K1/0246 , H05K1/144 , H05K2201/042 , H05K2201/096 , H05K2201/09609 , H05K2201/10098
Abstract: A waveguide launch system configured for translating radio frequency signal waves is provided. The system comprises a first printed circuit board lamina comprising an electrically conductive ground member and configured for attachment of a separate waveguide element, having a first cross-section area, thereto. A second printed circuit board lamina comprising an electrically conductive backshort cover configured to reflect the RF signal waves is bonded to a first printed circuit board lamina. An electrically conductive barrier arrangement extends through the second printed circuit board lamina. The electrically conductive barrier arrangement and the electrically conductive backshort cover form an integrated electrically conductive backshort volume of an integrated backshort having a second cross-section area. The second cross-section area is smaller than the first cross-section area.
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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
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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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.
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