Dielectric resonator, dielectric resonator filter, and method of controlling dielectric resonator
AssigneeNgk Spark Plug Co., Ltd.
InventorsTakashi Kasashima, Noriyasu Sugimoto
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Abstract
Disclosed are a dielectric resonator having simple configuration applicable to a multiple mode with no electrical signal transmission loss, and a method of controlling a resonance state (coupling mode) in the dielectric resonator. The dielectric resonator includes a cylindrical or polygonal external conductor, and a dielectric resonant element arranged at the substantially center of the external conductor. A notched portion is formed at a part of the dielectric resonant element so as to control the resonance state of the dielectric resonator.
Claims37
1-2. (canceled)
A dielectric resonator comprising:
- a cylindrical or polygonal external conductor;
- a dielectric resonant element arranged at the substantially center of the external conductor;
- and
- an electrical signal input section and an electrical signal output section,
- wherein the dielectric resonant element has a notched portion for generating an attenuation pole.
A method of controlling a dielectric resonator including a cylindrical polygonal external conductor and a dielectric resonant element arranged at the substantially center of the external conductor,
- wherein a notched portion is formed at a part of the dielectric resonant element so as to control the resonance state of the dielectric resonator and to generate an attenuation pole.
A dielectric resonator comprising:
- a cylindrical or polygonal external conductor;
- a dielectric resonant element arranged at the substantially center of the external conductor;
- and
- an electrical signal input section and an electrical signal output section,
- wherein a notched portion is formed at a part of the dielectric resonant element at a position and in size such that a coupling coefficient to a plurality of introduced electrical signals indicates a peak.
A method of controlling a dielectric resonator including a cylindrical polygonal external conductor and a dielectric resonant element arranged at the substantially center of the external conductor,
- wherein a notched portion is formed at a part of the dielectric resonant element at a position and in size such that a coupling coefficient to a plurality of introduced electrical signals indicates a peak.
A dielectric resonator filter comprising:
- A dielectric resonator comprising:
- a cylindrical or polygonal external conductor;
- a dielectric resonant element arranged at the substantially center of the external conductor;
- and
- an electrical signal input section and an electrical signal output section,
- wherein the external conductor has a cavity,
- the dielectric resonant element has a prism or plate-shaped first dual-mode dielectric resonant element arranged in the cavity, the first dual-mode dielectric resonant element having a first bottom surface and a first axis, and a prism or plate-shaped second dual-mode dielectric resonant element arranged in the cavity, the second dual-mode dielectric resonant element having a second bottom surface opposite the first bottom surface and a second axis,
- a first notched portion is formed on the first dual-mode dielectric resonant element so as to be arranged in a first direction when viewed from the first axis, and a second notched portion is formed on the second dual-mode dielectric resonant element so as to be arranged in a second direction at an angle corresponding to substantially an integer multiple of a right angle with respect to the first direction when viewed from the second axis,
- the electrical signal input section has an end opposite the side surface of the first dual-mode dielectric resonant element, and
- the electrical signal output section has an end opposite the side surface of the second dual-mode dielectric resonant element.
A dielectric resonator comprising:
- a cylindrical or polygonal external conductor;
- a dielectric resonant element arranged at the substantially center of the external conductor;
- and
- an electrical signal input section and an electrical signal output section.
- the dielectric resonator further comprising:
- a dielectric adjustment piece arranged to be opposite the top surface or bottom surface of the dielectric resonant element and configured such that the distance from the dielectric resonant element is adjustable,
- wherein the dielectric resonant element is fixed in a cavity surrounded by the external conductor, a part of the dielectric resonant element is cut so as to excite a plurality of resonance modes, and the frequency characteristic has an attenuation pole.
Dependencies are inferred from the claim text.