公开(公告)号：EP1084521A4

公开(公告)日：2004-05-19

申请号：EP99924109

申请日：1999-04-06

申请人： UNIV WEST VIRGINIA

发明人： WEST VIRGINIA UNIVERSITY

IPC分类号： H01Q1/36 ,  H01Q11/08 ,  H01Q11/12 ,  H01Q11/14

CPC分类号： H01Q11/12 ,  H01Q1/36 ,  H01Q11/08 ,  H01Q11/14

摘要： A contrawound helical antenna (100, 130) produces a uniformly directed circulation of magnetic current (M) with a plurality of magnetic dipole elements (32, 34, 35). In one embodiment, the magnetic dipole elements (32, 34) have the same curvature, and the magnetic currents (M) on respective magnetic dipole elements (32, 34) are each directed in the same direction, relative to the central signal coupler (18) of the magnetic dipole antenna (100). In another embodiment, the magnetic dipole elements (32, 35) have the opposite curvature, and the magnetic currents (M) on respective magnetic dipole elements (32, 35) are each directed in opposite directions, relative to the central signal coupler (18) of the magnetic dipole antenna (130).