Dielectric Waveguide-Microstrip Transition Structure

A dielectric waveguide-microstrip transition structure comprising:

• a dielectric waveguide containing a dielectric block and a conductor film covering an entire surface of the dielectric block, except a signal input/output portion, wherein a slot is formed in a bottom surface of the dielectric waveguide to expose the dielectric in H shape;
• a microstrip having an end which is openly terminated and disposed with opposing to and spaced apart from the slot of the dielectric waveguide, wherein the end is branched to achieve impedance matching with the slot;
• and
• a cavity containing a conductive wall surrounding the end of the microstrip and the slot of the dielectric waveguide, except a part of the microstrip being led out to connect to an external circuit.

A branch circuit having a dielectric waveguide-microstrip transition structure which comprises:

• a dielectric waveguide containing a dielectric block and a conductor film covering an entire surface of the dielectric block, except a signal input/output portion, wherein a slot is formed in a bottom surface of the dielectric waveguide to expose the dielectric;
• a microstrip having an end which is openly terminated and disposed with opposing to and spaced apart from the slot of the dielectric waveguide;
• and
• a cavity containing a conductive wall surrounding the end of the microstrip and the slot of the dielectric waveguide, except a part of the microstrip being led out to connect to an external circuit,
• wherein the branch circuit is adapted to branch a signal from the microstrip using the dielectric waveguide-microstrip transition structure.

A branch circuit having a dielectric waveguide-microstrip transition structure which comprises:

• a dielectric waveguide containing a dielectric block and a conductor film covering an entire surface of the dielectric block, except a signal input/output portion, wherein a slot is formed in a bottom surface of the dielectric waveguide to expose the dielectric in H shape;
• a microstrip having an end which is openly terminated and disposed with opposing to and spaced apart from the slot of the dielectric waveguide, wherein the end is branched to achieve impedance matching with the slot;
• and
• a cavity containing a conductive wall surrounding the end of the microstrip and the slot of the dielectric waveguide, except a part of the microstrip being led out to connect to an external circuit,
• wherein the branch circuit is adapted to branch a signal from the microstrip using the dielectric waveguide-microstrip transition structure.