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Institution

Saab AB

CompanyThun, Switzerland
About: Saab AB is a company organization based out in Thun, Switzerland. It is known for research contribution in the topics: Antenna (radio) & Signal. The organization has 862 authors who have published 928 publications receiving 8807 citations. The organization is also known as: Saab AB & Svenska Aeroplan AB.


Papers
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Patent
Dammert Patrik1, Hellsten Hans1
18 Dec 2019
TL;DR: In this paper, the authors proposed a method for a continuous arbitrary waveform radar configured for transmitting and receiving signals over a selected communication band, which consists of generating the radar transmit signal with a waveform having a non-monotonic frequency change, modifying the waveform to obtain at least one spectral notch and isolating reception and transmission by cancellation.
Abstract: The present invention relates to a method for a continuous arbitrary waveform radar configured for transmitting and receiving signals over a selected communication band. The method comprises: generating the radar transmit signal with a waveform having a non-monotonic frequency change, modifying the waveform to obtain at least one spectral notch and isolating reception and transmission by cancellation. Each spectral notch at a selectable frequency with a selectable bandwidth, and the waveform is modified to maintain the spectral density of the transmit radar signal.

2 citations

Journal ArticleDOI
TL;DR: In this paper, the analytical and numerical solutions of the equations of the k-e turbulence model are analyzed under certain conditions on the boundary values and the interior values of k and e. The simplifications and conclusions are supported by data from a numerical solution of flow over a flat plate.

2 citations

Proceedings ArticleDOI
19 Dec 2013
TL;DR: In this article, the results of some reconfigurable RF-MEMS switching circuits and antennas fabricated using GaAs MMIC and LTCC based processes are presented together with a compact Ka-band GaAs MEMS 3-bit phase shifter circuit and array antenna modules.
Abstract: This paper presents the results of some reconfigurable RF-MEMS switching circuits and antennas fabricated using GaAs MMIC and LTCC based processes. Wafer-level packaged GaAs RF-MEMS series and shunt switches demonstrating low losses (≤ 0.5 dB) up to 40 GHz are presented together with a compact Ka-band GaAs MEMS 3-bit phase shifter circuit and LTCC based array antenna modules. Furthermore, some GaAs MMIC wideband/V-band RF-MEMS switching networks and a W-band on-chip slot antenna design show promising RF properties for broadband mm-wave applications related to wireless communication and RF-sensing.

2 citations

Patent
05 Jul 2006
TL;DR: In this paper, a method of detecting communications errors by coding messages as pictures is provided, and a communications method useable to safely communicate a message or a signal from a first safety approved entity (210) to a second safety-approved entity (230) via a third, non-safety-approachable entity (220), comprising that each command is sent with the aid of a command message from the first to the second entity, an acknowledge message from a second to the first entity, a go-ahead message from an entity to an entity, and an acknowledgment message
Abstract: A method of detecting communications errors by coding messages as pictures is provided. Also provided is a communications method useable to safely communicate a message or a signal from a first safety approved entity (210) to a second safety approved entity (230) via a third, non-safety approved entity (220), comprising that each command is sent with the aid of a command message from the first to the second entity, an acknowledge message from the second to the first entity, and a go-ahead message from the first to the second entity.

2 citations

Patent
15 Jul 2010
TL;DR: In this paper, an inventive multiphase transformer rectifier unit for converting a three-phase (R, S, T) alternating current (AC) supplied from a power distribution system (2) to direct current (DC) supplied to at least one load (3).
Abstract: The object of the present invention is to provide an inventive multiphase transformer rectifier unit (1) for converting a three-phase (R, S, T) alternating current (AC) supplied from a power distribution system (2) to direct current (DC) supplied to at least one load (3). The multiphase transformer rectifier unit (1) comprises a magnetic core (5) having a primary winding set (17) and secondary winding set (18), and a rectifier circuit (22). The secondary winding set (18) is arranged to generate N substantially equally distributed output phases, wherein N is an odd number multiple of 3, and N > 3, and the primary winding set (17) is arranged to provide a positive or negative phase shift equal substantially to 360/(8x N) degrees of said output phases. By connecting two such multiphase transformer rectifier units (1) to the three- phase power distribution system, one thereof with changed order of connection of the input phases, the number of output pulses from the combination of two multiphase transformer rectifier units (1) will appear as doubled compared with a single inventive multiphase transformer rectifier unit (1) due to interleaved pulses from the two multiphase transformer rectifier units (1), thus reducing current distortion. It is also the object of the present invention to provide a corresponding inventive method of an arrangement of two inventive multiphase transformer rectifier units (1) for reducing current distortion in the power distribution system (2).

2 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20231
20222
202120
202029
201942
201828