Small dielectric dual-mode filter without shell

A filter, no case technology, applied in the field of small dielectric double-mode filters, can solve the problems of large insertion loss, low power capacity, large volume and weight, etc.

Pending Publication Date: 2020-10-02
PIVOTONE COMM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] If the traditional metal filter is selected, it cannot be integrated inside the antenna due to the size and weight of the traditional metal filter.
If a small d

Method used

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  • Small dielectric dual-mode filter without shell
  • Small dielectric dual-mode filter without shell
  • Small dielectric dual-mode filter without shell

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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 small-sized dielectric double-mode filter without a case provided by an embodiment of the present invention, the filter includes: n resonant cavities 120 connected in series through metal rods 110, and every two adjacent resonant cavities 120 There is a metal sheet 130 at intervals, and n≥3.

[0033] Wherein, if the number of resonant cavities 120 is n, the number of metal sheets 130 is n−1, and the number of n can be determined according to an actual filter index, which is not limited in this embodiment.

[0034] figure 1 Take n as 6 for example, then figure 1 Shown is a tenth-order four-zero small dielectric dual-mode filter. The filter includes a first reso...

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Abstract

The embodiment of the invention discloses a small dielectric dual-mode filter without a shell, and belongs to the technical field of communication. The filter comprises n resonant cavities connected in series through a metal rod, wherein a metal sheet is arranged between every two adjacent resonant cavities, the first resonant cavity and the last resonant cavity in the n resonant cavities are metal resonant cavities, the remaining n-2 resonant cavities in the n resonant cavities are dielectric dual-mode resonant cavities, the dielectric dual-mode resonant cavities are of a symmetrical polygonal structure, metallization of the surfaces of the dielectric dual-mode resonant cavities is achieved, and the n resonant cavities are coupled through coupling windows on the metal sheets. According tothe filter provided by the embodiment of the invention, a metal shell does not need to be arranged outside the dielectric dual-mode resonant cavity, so that the filter has the advantages of being compact in size, small in loss, large in power capacity, high in out-of-band rejection and good in harmonic performance so as to effectively improve the anti-interference capacity and the frequency spectrum utilization rate of a 5G communication system, reduce the power consumption of the 5G communication system and improve the coverage range of the 5G communication system.

Description

technical field [0001] The embodiment of the present invention relates to the field of communication technology, in particular to a small-sized dielectric double-mode filter without a casing. 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. [0003] 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, although the size of the small dielectric waveguide filter is small, its insertion loss is large and its power capacity is low. Contents of the invention [0004] An embodiment of the present invention provides a small-sized dielectric double-mode filter without a housing, which is used to solve the...

Claims

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Application Information

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IPC IPC(8): H01P1/212H01P1/208
CPCH01P1/2082H01P1/212
Inventor 江顺喜梁国春杜锦杰王飞项显殷实
Owner PIVOTONE COMM TECH
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