公开(公告)号：EP1072063A1

公开(公告)日：2001-01-31

申请号：EP98918659.8

申请日：1998-04-24

申请人： ENDGATE CORPORATION

发明人： FAULKNER, Mark, V. ,  STONEHAM, Edward, B. ,  MOHWINKEL, Clifford, A. ,  VAUGHAN, Mark, J.

IPC分类号： H01P1/162

CPC分类号： H01P3/003 ,  H01P1/162

摘要： Lossy resistive films (220, 220') and longitudinally extending coplanar conductors (206, 210) of a radio frequency transmission line are defined on the planar surface (204) of an insulating substrate (202). The resistive films (220, 220') may be positioned away from or in the space between parallel conductors (206, 210). The coplanar conductors may be configured as a two conductor coplanar slotline (206, 210) or as part of a three conductor coplanar wave guide (206, 210, 230). The resistive film (338) may also be extended (sea of resistor) over otherwise unused portions of the substrate. Still another embodiment provides a signal attenuating coplanar resistive structure (350) between a coplanar signal conductor (356) and a coplanar ground conductor (370). The coplanar resistive structure (400, 500) may include a meandering, or serpentine conductor (510) or interdigitated comb-like resistive film fingers (412a, 416).