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Bottom-debugging cavity filter

A filter and cavity technology, which is applied in the field of filters, can solve problems such as complicated maintenance and replacement of equipment, poor outlet threaded holes, poor quality control, etc., and achieve the effects of improved debugging effect, low replacement cost, and good debugging effect

Inactive Publication Date: 2016-05-04
李登峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] On the one hand, there are several threaded holes matching the number of cavities on the cover plate, and the tuning screw can tune the corresponding cavity by extending into a certain threaded hole. Since multiple threaded holes need to be processed on one cover plate, processing Difficulty, poor quality control, resulting in poor debugging effect. Second, when debugging the filter, it is necessary to cooperate with the screw and the threaded hole for multiple tunings. After a period of use, the threaded hole for the outlet is easy to be defective, affecting Intermodulation, since all threaded holes are processed on one cover plate, when a threaded hole is defective, the cover plate needs to be replaced as a whole, the maintenance and replacement of equipment is complicated and costly

Method used

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Experimental program
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Effect test

specific Embodiment 1

[0035] Such as figure 1 Shown is a structural schematic diagram of a specific embodiment 1 of the present invention.

[0036] The bottom debugging cavity filter 100 includes one or more cavities 110, an inner conductor 120 located inside the cavity 110 for conducting electricity, an outer conductor 130 located outside the cavity 110 for conducting electricity, and the outer conductor 130 and the inner conductor 130 The base 140 to which the conductors 120 are electrically connected, the housing cover 150 covering the top of all cavities 110 , and the tuning element 160 located at the bottom of each cavity 110 for debugging.

[0037] Such as figure 2 Shown is a schematic structural diagram of the tuning element in Embodiment 1 of the present invention.

[0038] The tuning element 160 includes a resonant column 161 installed at the bottom of the cavity 110, a small cover plate 162 covering the bottom of the cavity 110, a threaded hole 163 opened along the thickness direction ...

specific Embodiment 2

[0052] Such as Figure 6 As shown, it is a structural schematic diagram of the tuning screw of the second embodiment of the present invention.

[0053] In this embodiment, the structure and working principle of the bottom-tuned cavity filter 100 are the same as those in the first embodiment, the difference is that in this embodiment, the tuning screw 164 includes a screw head 164g and a screw head 164g connected to the screw The main body 164b of the head 164g, one end of the main body 164b is sleeved in the screw head 164g, and the axes of the two coincide. One is made of metal, and the other is made of non-metal, such as plastic. The screw head 164g and the main body 164b use two different materials to form a composite tuning screw 164, which combines the dual advantages of metal and plastic, so that the screw head 164g and the main body 164b have different temperature expansion coefficients, and the two can compensate each other Influenced by temperature changes, when the...

specific Embodiment 3

[0054] Such as Figure 7 Shown is a schematic structural diagram of the tuning screw of the third embodiment of the present invention.

[0055] In this embodiment, the structure and working principle of the bottom-tuned cavity filter 100 are the same as those in the first embodiment, the difference is that in this embodiment, the tuning screw 164 includes a screw head 164g and a screw head 164g connected to the screw The main body 164b of the head 164g, one end of the screw head 164g is sleeved in the main body 164b, and the axes of the two coincide, the outer wall of the main body 164b is provided with an external thread 164d, and one of the screw head 164g and the main body 164b is One is made of metal, and the other is made of non-metal, such as plastic. The screw head 164g and the main body 164b use two different materials to form a composite tuning screw 164, which combines the dual advantages of metal and plastic, so that the screw head 164g and the main body 164b have ...

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Abstract

The invention relates to field of filters, in particular to a bottom-debugging cavity filter. The bottom-debugging cavity filter comprises one or more cavity bodies, inner conductors, outer conductors, bases, a shell cover board and tuning elements, wherein the inner conductors are arranged in the cavity bodies for electric conduction; the outer conductors are located outside the cavity bodies for electric conduction; the bases electrically connect the outer conductors and the inner conductors; the shell cover board covers the top parts of all cavity bodies; each tuning element is located at the bottom part of each cavity body for debugging, and comprises a resonant post, a small cover board, a threaded hole and a tuning screw; each resonant post is arranged at the bottom part of the corresponding cavity body; each small cover board covers the bottom part of the corresponding cavity body; each threaded hole is formed along the thickness direction of the corresponding small cover board and opposite to the corresponding resonant post; each tuning screw is detachably screwed on the corresponding threaded hole; and each tuning screw passes through the corresponding threaded hole, extends into the corresponding cavity body and is arranged oppositely to the corresponding resonant post. The bottom-debugging cavity filter is good in debugging effect, simple in maintenance and low in replacement cost.

Description

technical field [0001] The invention relates to the field of filters, in particular to a bottom-tuned cavity filter. Background technique [0002] With the development of mobile communication, the amount of traffic generated by users using mobile phones in large buildings is increasing day by day, requiring good mobile communication services indoors. For higher reasons, there are often blind spots in network coverage. At the same time, the fierce competition for users among operators also increases the indoor communication coverage network, aggravates interference, artificially causes the deterioration of communication quality, and generates intermodulation interference. Intermodulation interference refers to a new frequency signal generated by the superposition of two different frequency signals in a certain system. When this signal falls within the receiving frequency band, it will affect the normal reception of telecommunication equipment. [0003] As a frequency selecti...

Claims

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Application Information

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IPC IPC(8): H01P1/207
CPCH01P1/207
Inventor 黄子云李登峰
Owner 李登峰
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