Transition between circuit transmission line and microwave waveguide
First Claim
1. A transition for interfacing a three dimensional microwave waveguide with an end of a circuit transmission line, the waveguide being shaped such that it defines a substantially hollow interior with an opening, the waveguide further defining a direction of electric field propagation that is parallel to a first direction, the transmission line being disposed outside the waveguide and comprising at least first and second conductors, the transition comprising:
- at least one guide coupled to the end of the transmission line, the guide including a first pair of continuous noncontacting conducting edges defining a gap, the gap extending through the opening at least partially in the interior of the waveguide, at least one of the edges being curved over at least a portion of its length, the portion of the guide located within the interior of the waveguide being disposed in a plane that is transverse to the first direction.
7 Assignments
0 Petitions
Accused Products
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°, it rotates the orientation of the electric field vector by the same amount.
45 Citations
7 Claims
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1. A transition for interfacing a three dimensional microwave waveguide with an end of a circuit transmission line, the waveguide being shaped such that it defines a substantially hollow interior with an opening, the waveguide further defining a direction of electric field propagation that is parallel to a first direction, the transmission line being disposed outside the waveguide and comprising at least first and second conductors, the transition comprising:
at least one guide coupled to the end of the transmission line, the guide including a first pair of continuous noncontacting conducting edges defining a gap, the gap extending through the opening at least partially in the interior of the waveguide, at least one of the edges being curved over at least a portion of its length, the portion of the guide located within the interior of the waveguide being disposed in a plane that is transverse to the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7)
Specification