Transition circuit
First Claim
1. A transition circuit converting the transmission path of a microwave in a direction either from a waveguide to a microwave transmission line or from a microwave transmission line to a waveguide, said transition circuit comprising:
- a waveguide having a notched portion formed by cutting away a portion of the wall of the waveguide from the end portion thereof;
a dielectric substrate in which a portion extending outside the waveguide through the notched portion of the waveguide is formed, the substrate being coupled to the end portion of the waveguide;
a plurality of polygonal conductor patterns formed regularly disposed on the face of the dielectric substrate, which is opposed to the interior of the waveguide;
a ground conductor formed on the other face of the dielectric substrate;
an electrically connecting portion electrically connecting the ground conductor and each of the conductor patterns;
an open stub formed flush with the conductor patterns formed on the dielectric substrate; and
a conductor line portion of a microwave transmission line, which is formed on the portion of the dielectric substrate that extends outside the waveguide, the conductor line portion being electrically connected to the open stub.
1 Assignment
0 Petitions
Accused Products
Abstract
A transition circuit includes: a waveguide having a notched portion formed by cutting away a portion of the tube wall of the waveguide from the end portion of the waveguide; a dielectric substrate in which a portion extending outside the waveguide through the notched portion of the waveguide is formed; a plurality of polygonal conductor patterns formed regularly disposed on the dielectric substrate; a ground conductor formed on the dielectric substrate; through holes electrically connecting this ground conductor and each of the conductor patterns; an open stub formed on the dielectric substrate; and the conductor of a microwave transmission line, which is formed on the portion of the dielectric substrate, extending outside the waveguide, and which is electrically connected to the open stub.
18 Citations
19 Claims
-
1. A transition circuit converting the transmission path of a microwave in a direction either from a waveguide to a microwave transmission line or from a microwave transmission line to a waveguide, said transition circuit comprising:
-
a waveguide having a notched portion formed by cutting away a portion of the wall of the waveguide from the end portion thereof;
a dielectric substrate in which a portion extending outside the waveguide through the notched portion of the waveguide is formed, the substrate being coupled to the end portion of the waveguide;
a plurality of polygonal conductor patterns formed regularly disposed on the face of the dielectric substrate, which is opposed to the interior of the waveguide;
a ground conductor formed on the other face of the dielectric substrate;
an electrically connecting portion electrically connecting the ground conductor and each of the conductor patterns;
an open stub formed flush with the conductor patterns formed on the dielectric substrate; and
a conductor line portion of a microwave transmission line, which is formed on the portion of the dielectric substrate that extends outside the waveguide, the conductor line portion being electrically connected to the open stub. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
Specification