公开(公告)号：EP3281032A1

公开(公告)日：2018-02-14

申请号：EP15888625.9

申请日：2015-04-09

Applicant: Saab AB

Inventor： SVENSSON, Bengt ,  ILLIPE, Hannes

IPC: G01S13/78 ,  H03F1/02

Abstract: The present disclosure relates to an antenna system for providing identification functionality comprising an amplifying circuitry, wherein the amplifying circuitry in turn comprises; a splitter node, wherein the splitter node is configured to split a transmission signal in at least a first and a second amplifier signal, a main power amplifier circuit, wherein the main power amplifier circuit comprises a main amplifier and wherein the main amplifier is configured to amplify the first amplifier signal, an auxiliary power amplifier circuit, wherein the auxiliary power amplifier circuit comprises an auxiliary amplifier and wherein the auxiliary amplifier is configured to amplify the second amplifier signal, and a power combiner node, wherein the power combiner node is configured to combine the first and the second amplifier signal of the main power amplifier circuit and the auxiliary power amplifier circuit. The main power amplifier circuit and the auxiliary power amplifier circuit are provided in parallel between the power splitter node and the power combiner node. The present disclosure also relates to an active electrically steerable antenna comprising such an antenna system, methods to control such antenna systems and a computer program, preferably stored on a computer readable medium, configured to be run on a computer or like for controlling the antenna system.

公开(公告)号：EP2377202A1

公开(公告)日：2011-10-19

申请号：EP08879229.6

申请日：2008-12-22

Applicant: Saab AB

Inventor： SVENSSON, Bengt

IPC: H01Q21/28 ,  H01Q1/38 ,  H01Q21/30

CPC classification number: H01Q21/28 ,  H01Q9/16 ,  H01Q9/28 ,  H01Q13/08 ,  H01Q13/10

Abstract: The invention provides an antenna structure comprising at least two stacked antenna apertures, a first antenna aperture with first antenna elements and at least a second antenna aperture with second antenna elements. The antenna structure is arranged for operation in at least a high and a low frequency band. The first antenna elements are arranged for operation in the high frequency band and said second antenna elements for operation in the low frequency band. The first antenna elements are arranged to have a polarization substantially perpendicular to the polarization of the second antenna elements. The second antenna elements are arranged in at least one group and each of said group, comprises a number of second antenna elements coupled in series and arranged to have a common feeding point on a straight feeding structure. One feeding structure is located adjacent to each group of second antenna elements. The direction of the feeding structure is substantially perpendicular to the polarization of the first antenna elements. The invention also provides a corresponding method and a radar system comprising the antenna structure.