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Dual-mode dielectric filter

A dielectric filter, single-mode technology, applied in the field of communication, can solve the problems of small quality factor Q value, inability to connect the antenna vibrator vertically, large insertion loss, etc., to achieve the effect of large Q value, small insertion loss, and less loading

Active Publication Date: 2021-12-03
PIVOTONE COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a dielectric filter has the following disadvantages: 1) The quality factor Q value is small, and the insertion loss is large; 2) The input and output ends are on the back of the dielectric filter, and cannot be connected vertically to the antenna oscillator

Method used

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] Please refer to figure 1 , which shows a dual-mode dielectric filter provided by an embodiment of the present invention, the dual-mode dielectric filter includes: an input terminal 1 , a plurality of resonant cavities and an output terminal 6 connected in sequence. Wherein, the input end 1 and the output end 6 are arranged along the axial direction of the dual-mode dielectric filter, thus facilitating the vertical integration of the dual-mode dielectric filter and the antenna element.

[0033] The first and last resonant cavities in the plurality of resonant cavities are single-mode resonant cavities, and the rest of the resonant cavities are dual-mode resonant cavities 4 . figure 1 The first single-mod...

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Abstract

The invention discloses a dual-mode dielectric filter, and belongs to the technical field of communication. The dual-mode dielectric filter comprises an input end, a plurality of resonant cavities and an output end which are connected in sequence, the first resonant cavity and the last resonant cavity in the plurality of resonant cavities are single-mode resonant cavities, and the other resonant cavities are dual-mode resonant cavities; each dual-mode resonant cavity is of a cube structure, and the dual-mode resonant cavity realizes dual-mode resonance through an orthogonal degenerate mode of the cube structure. The input end and the output end are arranged at the two ends of the dual-mode dielectric filter, so that the vertical connection of the dual-mode dielectric filter and the antenna oscillator is facilitated. Besides, the first resonant cavity and the last resonant cavity in the multiple resonant cavities are single-mode resonant cavities, the other resonant cavities are dual-mode resonant cavities, the dual-mode resonant cavities are of a cube structure, and the dual-mode resonance of the dual-mode resonant cavities is achieved through orthogonal degenerate modes of the cube structure, so that the dual-mode dielectric filter is small in loading, large in Q value and small in insertion loss.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular to a dual-mode dielectric filter. Background technique [0002] Sub 6GHz in 5G (5th Generation) communication adopts MIMO (Multi-Input Multi-Output) technology, which needs to integrate a large number of filters inside the antenna. Therefore, the loss of filters, out-of-band rejection, power Capacity, volume, weight, etc. have higher requirements. If a traditional metal filter is selected, it cannot be integrated inside the antenna due to its volume and weight. If a small dielectric waveguide filter is selected, the above requirements can be met. Therefore, the dielectric filter has become a hot research topic at present. [0003] The dielectric filter in the related art includes a plurality of resonant cavities, and each resonant cavity operates in a main mode, so that one resonant cavity generates one resonance point. Such a dielectric filter ...

Claims

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Application Information

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IPC IPC(8): H01P1/212H01P1/20
CPCH01P1/212H01P1/2002Y02D30/70
Inventor 江顺喜梁国春殷实项显杜锦杰
Owner PIVOTONE COMM TECH
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