US 12,665,277 B2 · Dielectric waveguide filter and communication device

Abstract

A dielectric waveguide filter includes a dielectric body including a first and a second surfaces. The dielectric waveguide filter includes a metal plating covering an outer surface of the dielectric body. The dielectric waveguide filter includes a coupling structure formed a portion of the second surface. The coupling structure includes a coupling groove extending from the second surface into the dielectric body and including a coupling surface parallel to the second surface. The coupling structure includes an inner conductor at an annular center of the coupling groove that surrounds the inner conductor and separates the dielectric body into the inner conductor and an outer conductor. The inner conductor in the coupling groove includes a metal surface on the second surface. A distance between the coupling surface and the second surface is related to a coupling degree of the coupling structure.

Claims20

Dependent claims

A dielectric waveguide filter comprising:

a dielectric body comprising a first side and a second side that is opposite to the first side;
a metal plating covering at least a portion of an outer side of the dielectric body;
and
a coupling structure formed at the second side and comprising a coupling groove extending from the second side into the dielectric body and comprising a coupling side parallel to the second side,
wherein the coupling groove has an inner side wall having an inner conductor and an outer side wall having an outer conductor,
wherein the metal plating covers the second side,
wherein at least a portion of the coupling side is not covered with a metal layer, and
wherein a distance between the coupling side and the second side is related to a coupling degree of the coupling structure.

5 more elements

A communication device comprising:

a dielectric waveguide filter comprising:
a dielectric body comprising a first side and a second side that is opposite to the first side,
a metal plating covering at least a portion of an outer side of the dielectric body, and
a coupling structure formed at the second side;
and
a printed circuit board electrically coupled to a portion of the metal plating corresponding to the second side,
wherein the coupling structure comprises a coupling groove extending from the second side into the dielectric body and comprising a coupling side parallel to the second side,
wherein the coupling groove has an inner side wall having an inner conductor and an outer side wall having an outer conductor,
wherein the metal plating covers the second side,
wherein at least a portion of the coupling side is not covered with a metal layer, and
wherein a distance between the coupling side and the second side is related to a coupling degree of the coupling structure.

8 more elements

Dependencies are inferred from the claim text.

Dielectric waveguide filter and communication device

Life of this patent

Dielectric waveguide filter and communication device

Life of this patent

Abstract

Claims20