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Dielectric waveguide resonator and dielectric waveguide filter

A dielectric and waveguide technology, applied in resonators, waveguide-type devices, waveguides, etc., can solve the problems of difficulty in obtaining Q-value dielectric waveguide resonators, low-dielectric waveguide filters, and high electric field strength

Pending Publication Date: 2022-07-12
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in the dielectric waveguide filter disclosed in Patent Document 1, the electric field intensity between the tip of the via conductor formed in the blind hole inside the dielectric substrate and the conductor layer facing the tip is high, and the current is concentrated in the conductive layer. The front end of the conductor, so a relatively large resistance loss occurs in the part where the current density is high
That is, there is a problem that it is difficult to obtain a dielectric waveguide resonator with a high Q value, and it is also difficult to obtain a dielectric waveguide filter with a low insertion loss.

Method used

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  • Dielectric waveguide resonator and dielectric waveguide filter
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  • Dielectric waveguide resonator and dielectric waveguide filter

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no. 1 approach 》

[0037] figure 1 (A) is an external perspective view of the dielectric waveguide filter 101 of the first embodiment, figure 1 (B) is a perspective view showing the internal structure of the dielectric waveguide filter 101 .

[0038] figure 2 It is an enlarged perspective view of the dielectric waveguide filter 101 in the thickness direction. image 3 This is a bottom view of the dielectric waveguide filter 101 . in addition, Figure 4 It is a perspective view showing the four dielectric waveguide resonator portions, the main coupling portion and the sub coupling portion between the dielectric waveguide resonators, which are included in the dielectric waveguide filter 101 .

[0039] The dielectric waveguide filter 101 includes the dielectric plate 1 . The dielectric plate 1 is, for example, a member obtained by processing a dielectric ceramic, crystal, resin, or the like into a rectangular parallelepiped shape. The dielectric plate 1 has a first main surface MS1 and a sec...

no. 2 approach 》

[0077] In the second embodiment, a dielectric waveguide filter having a structure different from that shown in the first embodiment, such as the number of stages of resonators, is shown.

[0078] Figure 11 This is an external perspective view of the dielectric waveguide filter 102 according to the second embodiment. Figure 12 This is a bottom view of the dielectric waveguide filter 102 . in addition, Figure 13 It is a perspective view showing six dielectric waveguide resonator portions, a main coupling portion and a sub coupling portion between the dielectric waveguide resonators, which are included in the dielectric waveguide filter 102 .

[0079] The dielectric waveguide filter 102 includes the dielectric plate 1 . The dielectric plate 1 is, for example, a member obtained by processing a dielectric ceramic, crystal, resin, or the like into a rectangular parallelepiped shape. The dielectric plate 1 has a first main surface MS1 and a second main surface MS2 facing each ...

no. 3 approach 》

[0097] In the third embodiment, a dielectric waveguide filter including an eight-stage dielectric waveguide resonator and one notch resonator dielectric waveguide resonator is shown.

[0098] Figure 16 This is an external perspective view of the dielectric waveguide filter 103 according to the third embodiment. Figure 17 This is a bottom view of the dielectric waveguide filter 103 . in addition, Figure 18 It is a perspective view showing a plurality of dielectric waveguide resonator portions, a main coupling portion and a sub coupling portion between the dielectric waveguide resonators, which are included in the dielectric waveguide filter 103 .

[0099] The dielectric waveguide filter 103 includes the dielectric plate 1 . The dielectric plate 1 is, for example, a member obtained by processing a dielectric ceramic, crystal, resin, or the like into a rectangular parallelepiped shape. The dielectric plate 1 has a first main surface MS1 and a second main surface MS2 facing...

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Abstract

A dielectric waveguide filter (101) is provided with: a dielectric plate (1) having a first main surface (MS1) and a second main surface (MS2) facing each other, and a side surface (SS) connecting an outer edge of the first main surface (MS1) and an outer edge of the second main surface (MS2); a first surface conductor (21) formed on the first main surface (MS1); a second surface conductor (22) formed on the second main surface (MS2); side surface conductor films (8A-8D) which are formed inside the dielectric plate (1) and which connect the first surface conductor (21) and the second surface conductor (22); and internal conductors (7A-7D) that extend in a direction perpendicular to the first main surface (MS1) and are not electrically connected to neither the first surface conductor (21) nor the second surface conductor (22). A plurality of dielectric waveguide resonance spaces are formed in a space surrounded by the first surface conductor (21), the second surface conductor (22), and the side surface conductor films (8A-8D).

Description

technical field [0001] The present invention relates to a dielectric waveguide resonator and a dielectric waveguide filter including the dielectric waveguide resonator. Background technique [0002] The use of the millimeter wave band has been advanced with the increase in high speed and large capacity of mobile communication. A dielectric waveguide filter is suitable for a filter used in a base station or the like for mobile communication using such a millimeter waveband. [0003] Patent Document 1 is disclosed, for example, as a dielectric waveguide filter used in a millimeter wave band or the like. The dielectric waveguide filter includes a dielectric waveguide resonator formed by forming a first conductor layer and a second conductor layer respectively on first and second surfaces of a dielectric plate facing each other, and connected by The plurality of conductive conductors between the conductor layers on both surfaces are configured to form pillar walls. [0004] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/208H01P7/06H01P3/12
CPCH01P1/2053H01P1/2084H01P3/12H01P7/082H01P7/10H01P1/2088
Inventor 菊田诚之
Owner MURATA MFG CO LTD