公开(公告)号：US11646500B2

公开(公告)日：2023-05-09

申请号：US17418237

申请日：2019-12-18

Applicant: THALES

Inventor： Adrien Glise ,  Isabelle Le Roy-Naneix ,  Stefan Varault ,  Grégoire Pillet ,  Christian Renard

IPC: H01Q15/14 ,  H01Q1/52 ,  H01Q15/00 ,  H01Q17/00 ,  H01Q19/02

CPC classification number: H01Q15/141 ,  H01Q1/528 ,  H01Q15/0046 ,  H01Q17/001 ,  H01Q19/021

Abstract: An array antenna (A) in a medium (M) comprises a plurality of radiating elements (ERT) ensuring the transition between the antenna and the medium, the reflectivity of each element depending on a parameter, the reflectivity of a first element being close to that of the medium, the reflectivity of a last element being close to that of the antenna, the reflectivity parameter of the elements varying from one element to the next. A method comprises calculation of a path equal to the sum of the variations of the reflectivity from one element to the next element, optimization of the variation of the reflectivity parameter so that equivalent radar cross-section of the antenna is the lowest possible or the antenna best observes the radiation objectives, determination of the different elements as a function of said parameter, and simulation of the overall reflectivity and/or of the radiation of the antenna.

公开(公告)号：US20230076937A1

公开(公告)日：2023-03-09

申请号：US17929487

申请日：2022-09-02

Applicant: THALES ,  UNIVERSITE DE BORDEAUX ,  INSTITUT POLYTECHNIQUE DE BORDEAUX ,  Centre national de la recherche scientifique

Inventor： Timothée LE GALL ,  Anthony Ghiotto ,  Gwenael Morvan ,  Stefan Varault ,  Bruno Louis

IPC: H01Q15/24 ,  H01Q13/10

Abstract: This elementary antenna includes a cavity delimited by front and rear faces and side walls, the front face being provided with first and second slots arranged in a cross, so that, when the cavity operates in a TE210 mode, a wave polarized perpendicularly to the first slot is emitted and when the cavity operates in a TE120 mode, a wave polarized perpendicularly to the second slot is emitted. This elementary antenna is characterized in that the rear face is brought to a reference electric potential, and in that the elementary antenna includes an excitation device, such as a metallized via, capable of exciting the front face through the cavity, the excitation device exciting the front face at a plurality of excitation points, distributed over the front face and presenting a common predefined impedance