公开(公告)号：JPH05251906A

公开(公告)日：1993-09-28

申请号：JP10832491

申请日：1991-04-15

Applicant: CASCADE MICROTECH INC

Inventor： EDOWAADO EMU GOTSUDOSHIYAAKU ,  KIISU II JIYOONZU

IPC: H01P3/123 ,  H01P5/10 ,  H01P5/107

Abstract: PURPOSE: To provide a waveguide structure hardly causing reflection or attenuation and capable of being efficiently connected to a coplanar waveguide and transmitting broadband signal. CONSTITUTION: The waveguide structure is provided with a conductive tubular waveguide part having an inner slender ridge 12 facing an inside thin and long trough 14 directly. The tubular waveguide part has a rectangular cross section. The slender ridge 12 has its lateral width narrower than the lateral width of the slender trough 14 and is extended into the slender trough to generate horizontal electric field arrangement. Broadband signal transmission characteristics are obtained with this ridge.