公开(公告)号：US09880241B2

公开(公告)日：2018-01-30

申请号：US14643669

申请日：2015-03-10

申请人： Commissariat à l'énergie atomique et aux énergies alternatives

发明人： Guillaume Ferrand ,  Michel Luong

IPC分类号： G01R33/36 ,  G01R33/34 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/422

CPC分类号： G01R33/3642 ,  G01R33/34 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3628 ,  G01R33/422

摘要： A patch resonator for nuclear magnetic resonance device includes a ground plane, a conductive element, a dielectric element positioned between the ground plane and the conductive element, the resonator being able to transmit a circularly polarized radiofrequency signal when the resonator is supplied by a first transmission line connected to the conductive element via a first connection point and able to receive alternatively a radiofrequency signal circularly polarized in the opposite direction when the resonator is connected to a second transmission line via a second connection point, the resonator including a switch mounted in parallel on each transmission line at a distance from the ground plane corresponding to (2n+1)λ/4 with n a natural integer, and λ the wavelength of the guided wave in the transmission line at the operating frequency of the resonator, the switch making it possible to electrically connect/disconnect the transmission lines from the conductive element.