公开(公告)号：EP2718484A4

公开(公告)日：2014-10-01

申请号：EP12796601

申请日：2012-05-30

申请人： SKYWORKS SOLUTIONS INC

发明人： CRUICKSHANK DAVID BOWIE ,  O'DONOVAN RICKARD PAUL ,  MACFARLANE IAIN ALEXANDER ,  MURRAY BRIAN ,  HILL MICHAEL DAVID

IPC分类号： C30B29/28 ,  C01G49/00 ,  G02F1/09 ,  H01F10/24

CPC分类号： H01P1/387 ,  C30B29/28 ,  H01F1/346 ,  H01F10/24

公开(公告)号：EP2710665A4

公开(公告)日：2015-03-25

申请号：EP12782822

申请日：2012-05-04

申请人： SKYWORKS SOLUTIONS INC

发明人： CRUICKSHANK DAVID BOWIE ,  MURRAY BRIAN

IPC分类号： H01P1/38 ,  H01P1/36

CPC分类号： H01F7/0273 ,  H01P1/36 ,  H01P1/38 ,  H01P1/387 ,  H01P1/39 ,  H04B1/48 ,  H04B2001/485

摘要： Apparatus and methods related to ferrite based circulators are disclosed. A ferrite disk used in a circulator can be configured to reduce intermodulation distortion when routing radio-frequency signals having closely spaced frequencies. Such a reduction in intermodulation distortion can be achieved by adjusting magnetization at the edge portion of the ferrite disk. By way of an example, a ferrite disk with a reduced saturation magnetization (4 PiMs) edge portion can reduce intermodulation distortion. Example configurations with such a reduced 4 PiMs edge portions are disclosed.