公开(公告)号：US20180123218A1

公开(公告)日：2018-05-03

申请号：US15572192

申请日：2016-05-13

Applicant: TDF ,  UNIVERSIT DE RENNES 1

Inventor： Mathilde BELLEC ,  Franck COLOMBEL ,  Stéphane M. AVRILLON ,  Sébastien PALUD ,  Pierre-Yves JEZEQUEL

IPC: H01Q1/04 ,  H01Q9/32 ,  H01Q19/00 ,  H01Q1/48

CPC classification number: H01Q1/04 ,  G01S7/03 ,  H01Q1/36 ,  H01Q1/48 ,  H01Q9/32 ,  H01Q19/00

Abstract: The invention relates to a surface wave antenna system, comprising at least one antenna that is electrically short in the vertical plane, with vertical or elliptic polarization and emitting a radiation, said antenna being linked to a conducting medium exhibiting a substantially horizontal surface. The antenna system being characterized in that it comprises furthermore at least one parasitic wire extending in a direction substantially parallel to the surface of the conducting medium, electrically insulated from each antenna, and arranged in the vicinity of at least one antenna in such a way as to be able to radiate by virtue of the current induced by said radiation of this antenna. The invention makes it possible to combine the resultants of each radiating element in such a way as to control the radiation pattern in the vertical plane.

公开(公告)号：US20200235473A1

公开(公告)日：2020-07-23

申请号：US16652564

申请日：2018-10-04

Applicant: TDF ,  UNIVERSITE DE RENNES 1

Inventor： Evgueni KAVERINE ,  Sébastien PALUD ,  Franck COLOMBEL ,  Mohamed HIMDI

IPC: H01Q3/44 ,  H01Q1/38

Abstract: The invention concerns an antenna, comprising at least two non-ferrous metal plates, at least one first plate forming a radiating portion and a second plate forming a mass plane, at least one substrate, arranged between the mass plane and the radiating portion, and an excitor of length at least equal to the thickness of the substrate, extending between the mass plane and the radiating portion and connected to the radiating portion, and adapted to supply the antenna, characterised in that the substrate is a dispersive ferromagnetic substrate, called dispersive ferrite presenting, as magnetic features, a high relative magnetic permeability comprised between 10 and 10,000 and a high magnetic loss tangent greater than 0.1, said antenna comprising means for gradually and locally reducing magnetic features of the dispersive ferrite.

公开(公告)号：US20190165477A1

公开(公告)日：2019-05-30

申请号：US15751080

申请日：2016-07-22

Applicant: TDF ,  UNIVERSITE DE RENNES 1

Inventor： Mathilde BELLEC ,  Jean-Yves LAURENT ,  Sébastien M. PALUD ,  Pierre-Yves JEZEQUEL ,  Franck COLOMBEL ,  Stéphane AVRILLON

IPC: H01Q9/18 ,  H01Q9/20 ,  H01Q13/26 ,  H01Q21/08 ,  H01Q21/00

Abstract: The invention relates to an antenna designed to emit and/or receive surface waves with a decametric, hectometric or kilometric central wavelength λ0, characterised in that it comprises at least one horizontal wire aerial element of between 0.5λ0 and λ0 in length, and at least three vertical wire aerial elements of the same length between 0.03λ0 and 0.1λ0, arranged in a same plane and each comprising an upper end and a lower end, said upper ends being connected to the horizontal wire aerial element, said lower ends being designed to be connected to a conducting medium having a substantially horizontal surface. The invention also relates to an antenna, an antenna array and a use of an antenna or of an antenna array.