Dielectric resonator and dielectric filter
AssigneeTDK Corporation
InventorsYuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
Life of this patent
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Abstract
A dielectric filter includes a plurality of dielectric resonators. The dielectric filter further includes a plurality of resonator bodies corresponding to the plurality of dielectric resonators, and a peripheral dielectric portion lying around the plurality of resonator bodies. Each of the plurality of resonator bodies is formed of a first dielectric having a first relative permittivity. The peripheral dielectric portion is formed of a second dielectric having a second relative permittivity lower than the first relative permittivity. Each of the plurality of resonator bodies includes a plurality of individual elements separated from each other.
Claims18
A dielectric resonator comprising:
- a resonator body formed of a first dielectric having a first relative permittivity;
- and
- a peripheral dielectric portion lying around the resonator body, the peripheral dielectric portion being formed of a second dielectric having a second relative permittivity lower than the first relative permittivity, wherein
- the resonator body includes a plurality of individual elements separated from each other, and
- a distance between adjacent two of the plurality of individual elements is less than or equal to a quarter of a wavelength corresponding to a resonant frequency of the dielectric resonator inside the peripheral dielectric portion.
A dielectric resonator comprising:
- a resonator body formed of a first dielectric having a first relative permittivity;
- and
- a peripheral dielectric portion lying around the resonator body, the peripheral dielectric portion being formed of a second dielectric having a second relative permittivity lower than the first relative permittivity, wherein
- the resonator body includes a plurality of individual element groups aligned in a first direction, each of the plurality of individual element groups including a plurality of individual elements separated from each another, and
- in each of the plurality of individual element groups, adjacent two of the plurality of individual elements are adjacent to each other in a direction orthogonal to the first direction.
A dielectric resonator comprising:
- a resonator body formed of a first dielectric having a first relative permittivity;
- and
- a peripheral dielectric portion lying around the resonator body, the peripheral dielectric portion being formed of a second dielectric having a second relative permittivity lower than the first relative permittivity, wherein
- the resonator body includes a plurality of individual elements separated from each other,
- all the plurality of individual elements have a rotationally symmetrical shape with respect to an axis in a first direction, and
- the plurality of individual elements are aligned in the first direction.
A dielectric filter comprising:
- a plurality of dielectric resonators;
- a plurality of resonator bodies respectively corresponding to the plurality of dielectric resonators, each of the plurality of resonator bodies being formed of a first dielectric having a first relative permittivity;
- and
- a peripheral dielectric portion lying around the plurality of resonator bodies, the peripheral dielectric portion being formed of a second dielectric having a second relative permittivity lower than the first relative permittivity, wherein
- each of the plurality of resonator bodies includes a plurality of individual elements separated from each other, and
- a distance between adjacent two of the plurality of individual elements in each of the plurality of resonator bodies is less than or equal to a quarter of a wavelength corresponding to a resonant frequency of a corresponding one of the plurality of dielectric resonators inside the peripheral dielectric portion.
Dependencies are inferred from the claim text.