Transition between circuit transmission line and microwave waveg

Details Transition between circuit transmission line and microwave waveg Transition between circuit transmission line and microwave waveg

1997-09-25

1999-12-14

Gensler, Paul

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

333 34, H01P 5107

Patent

active

060023058

ABSTRACT:
A transition is provided for interfacing a coplanar waveguide with a three dimensional microwave waveguide. The transition includes three coplanar conductors that are formed integrally with and extend from the coplanar waveguide. The transition extends into the microwave waveguide through a slot, with the plane of the transition being perpendicular to the direction of propagation of the electric field in the waveguide. The center conductor of the transition is a patch whose width increases. The other two conductors are attached to the side conductors of the coplanar waveguide and to the exterior of the waveguide. They flank the patch and have curved edges complementary to those of the patch. The gaps are initially narrow, and become wider gradually. Further, as each guide steers the electric field while changing direction by 90.degree., it rotates the orientation of the electric field vector by the same amount.

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