Filter and communication equipment

A filter and integrated technology, applied in the field of communication, can solve the problems of structural limitation and material cost increase, and achieve the effect of cost reduction, cost reduction, and convenient capacitive cross-coupling

Pending Publication Date: 2020-05-19
PROSE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the structure in the above-mentioned patent requires an additional assembly of the annular body, or the integral die-casting of the annular body in the cover plate, which has the disadvantage of increasing the material cost; At the top of the resonant column, because the capacitance at the top of the resonant column is relatively strong and the top is surrounded by a ring body, the structure that needs to use electrical coupling (capacitance) is very limited, such as space coupling taps, flying rods, etc.

Method used

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  • Filter and communication equipment
  • Filter and communication equipment
  • Filter and communication equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Such as Figure 4 As shown, a filter disclosed in Embodiment 1 of the present invention includes a cavity 301, a cover plate 302, a resonance post 303 and a tuning screw 304, wherein the cover plate 302 is arranged on the cavity 301 to form a closed resonant For the cavity 305 , during implementation, the cover plate 302 can be integrally formed with the cavity 301 , and can also be fixed to the cavity 301 by fastening screws or other fixing structures.

[0038] The resonant column 303 is disposed in the resonant cavity 305 , and is integrally formed with the bottom surface of the cavity 301 . In the first embodiment, the resonant column 303 is integrally formed on the bottom of the cavity 301 and is perpendicular to the bottom of the cavity 301 , and its top is close to the bottom of the cover 302 but not in contact with the bottom of the cover 302 . The integrally formed resonant column 303 structure can be integrally formed by die-casting, which saves processing mat...

Embodiment 2

[0046] combine Figure 5 and Figure 6 As shown, a filter disclosed in Embodiment 2 of the present invention includes a cavity 401, a cover plate 402, a resonant column and a tuning screw 404, wherein the cover plate 402 is arranged on the cavity 401 to form a closed resonant cavity 405. During implementation, the cover plate 402 can be integrally formed with the cavity body 401, or can be fixed to the cavity body 401 by fastening screws or other fixing structures.

[0047] combine Figure 7 ~ Figure 9 As shown, the resonant column is arranged in the resonant cavity 405. The difference from the structure of the above-mentioned embodiment 1 is that in this embodiment 2, the resonant column is separately arranged in the resonant cavity 405, which specifically includes the split upper resonant column 403 and The lower resonant column 409, the lower resonant column 409 is integrally formed by the central part of the bottom surface of the resonant cavity 405 protruding upwards, t...

Embodiment 3

[0056] A communication device disclosed in Embodiment 3 of the present invention includes the filter described in Embodiment 1 or 2 above.

[0057] In the filter and communication equipment provided by the embodiment of the present invention, by improving the structure of the traditional tuning screw extending into the resonant column, the middle part of the tuning screw is hollowed out to form a hollow part, and the resonant column protrudes to form a protrusion that matches the hollow part The upper end of the raised part extends into the hollow part, which increases the induction area between the tuning screw and the resonant column, which is equivalent to increasing the distributed capacitance of the resonator. On the one hand, it can achieve the purpose of low frequency. The structure of the body will not cause all the distributed capacitance to be concentrated in a closed space, which is convenient for reference electrical coupling, and will not affect the diffused distri...

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PUM

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Abstract

The invention discloses a filter and communication equipment. According to the filter, the structure that a traditional tuning screw extends into a resonance column is improved; the middle part of thetuning screw is hollowed out to form a hollow part, the resonance column protrudes to form a protruding part matched with the hollow part, and the upper end of the protruding part extends into the hollow part, so that the induction area of the tuning screw and the resonance column is increased, equivalently, the distributed capacitance of the resonator is increased, in addition, the size of the filter is effectively reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to a filter and communication equipment. Background technique [0002] As a frequency selection device, cavity filter is widely used in the field of communication to filter out interference signals or clutter signals in a specific frequency range. The smaller the resonant cavity volume of the cavity filter, the higher the resonant frequency. In the limited space of the resonant cavity, in order to lower the resonant frequency, the distributed capacitance between the resonator and the shell can be increased, or the length of the resonator can be increased. [0003] In the prior art, combined with figure 1 , figure 2 As shown, the cavity filter includes a cavity 101, a resonant column 102, a cover plate 103, and a tuning screw 104 disposed in the cover plate, and the resonant column 102 can be integrally formed, such as figure 1 As shown, the structure has low production cost and simple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/207
CPCH01P1/207
Inventor 尹泽李强李敦穁
Owner PROSE TECH CO LTD
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