Dielectric resonator, dielectric filter, and communication apparatus

Patent metadata

Field	Value
Publication number	US-9871280-B2
Application number	US-201415100416-A
Country	US
Kind code	B2
Filing date	Dec 11, 2014
Priority date	Dec 13, 2013
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

A dielectric resonator which has a simple structure and is easy to manufacture, and a dielectric filter and a communication apparatus using the same are provided. In a dielectric resonator, a dielectric body includes a first portion having surfaces and a second portion having surfaces. A conductor surrounding the dielectric body includes inner surfaces facing the surfaces. A conductor is disposed between the surface and the inner surface. A conductor is disposed between the surface and the inner surface. The dielectric body includes a third portion which is not interposed between the conductors and a fourth portion which is not interposed between conductors.

First claim

The invention claimed is:

1. A dielectric resonator, comprising:
a dielectric body;
a first conductor;
a second conductor;
a third conductor;
a fourth conductor; and
a fifth conductor,
the dielectric body including
a first portion which has a first surface located at an end in a first direction of the first portion and a second surface located at an end in a second direction opposite to the first direction of the first portion, the first portion having a columnar shape, and
a second portion which has a third surface located at an end in a third direction perpendicular to the first direction of the second portion and a fourth surface located at an end in a fourth direction opposite to the third direction of the second portion, the second portion having a columnar shape,
the first portion and the second portion crossing each other,
the first conductor being disposed such that the dielectric body is housed in a cavity formed therein, the first conductor being disposed so as to surround the dielectric body leaving space therefrom, the first conductor having a first inner surface facing the first surface, a second inner surface facing the second surface, a third inner surface facing the third surface, and a fourth inner surface facing the fourth surface,
the second conductor being disposed on the first surface, an end in the first direction of the second conductor being electrically connected to the first inner surface,
the third conductor being disposed on the second surface, an end in the second direction of the third conductor being electrically connected to the second inner surface,
the fourth conductor being disposed on the third surface, an end in the third direction of fourth conductor being electrically connected to the third inner surface,
the fifth conductor being disposed on the fourth surface, an end in the fourth direction of the fifth conductor being electrically connected to the fourth inner surface,
the dielectric body including a third portion which is a portion of the first portion which is not interposed between the second conductor and the third conductor, and a fourth portion which is a portion of the second portion which is not interposed between the fourth conductor and the fifth conductor.

2. The dielectric resonator according to claim 1 , further comprising:
a sixth conductor; and
a seventh conductor,
wherein the sixth conductor is disposed between the second conductor and the first conductor in a fifth direction perpendicular to the first direction and the third direction, of which an end in the fifth direction is electrically connected to the first conductor, of which an end in a direction opposite to the fifth direction is electrically connected to the second conductor, and of which an end in the first direction is electrically connected to the first inner surface, and
the seventh conductor is disposed between the third conductor and the first conductor in the fifth direction, of which an end in the fifth direction is electrically connected to the first conductor, of which an end in a direction opposite to the fifth direction is electrically connected to the third conductor, and of which an end in the second direction is electrically connected to the second inner surface.

3. The dielectric resonator according to claim 2 , further comprising:
an eighth conductor; and
a ninth conductor,
wherein the eighth conductor is disposed between the fourth conductor and the first conductor in a sixth direction perpendicular to the first direction and the third direction, of which an end in the sixth direction is electrically connected to the first conductor, of which an end in a direction opposite to the sixth direction is electrically connected to the fourth conductor, and of which an end in the third direction is electrically connected to the third inner surface, and
the ninth conductor is disposed between the fifth conductor and the first conductor in the sixth direction, of which an end in the sixth direction is electrically connected to the first conductor, of which an end in a direction opposite to the sixth direction is electrically connected to the fifth conductor, and of which an end in the fourth direction is electrically connected to the fourth inner surface.

4. The dielectric resonator according to claim 3 , wherein the fifth direction and the sixth direction are opposite directions to each other.

5. A dielectric filter, comprising:
the dielectric resonator according to claim 1 ;
a tenth conductor; and
an eleventh conductor,
the tenth conductor being a linear conductor, and including a first end which is one end, and a second end which is the other end,
the first end being connected to the second conductor or the third conductor, the second end being exposed to an outside through a first through hole provided in the first conductor, the tenth conductor being electromagnetically coupled to the first portion,
the eleventh conductor being a linear conductor, and including a third end which is one end, and a fourth end which is the other end,
the third end being connected to the fourth conductor or the fifth conductor, the fourth end being exposed to an outside through a second through hole provided in the first conductor, the eleventh conductor being electromagnetically coupled to the second portion.

6. A communication apparatus, comprising:
an antenna;
a communication circuit; and
the dielectric filter according to claim 5 , the dielectric filter being configured to connect the antenna with the communication circuit.

Assignees

• Kyocera Corp

Inventors

• Yoshikawa Hiromichi

Classifications

• H01P1/2084

  with dielectric resonators · CPC title

• H01P1/2086 Primary

  multimode · CPC title

• H01P7/105 Primary

  Multimode resonators · CPC title