Regular hexagonal resonant cavity filter

Abstract

The utility model relates to a regular hexagonal resonant cavity filter, belongs to the technical field of resonant cavity filters, and solves the problem that a resonant cavity filter which is small in size and simple in structure is lacked in the prior art. The resonant cavity filter comprises a shell, a plurality of partition plates, a signal input port and a signal output port; the shell comprises a regular hexagonal top plate, a bottom plate and a hexagonal annular side wall; the signal input port and the signal output port are respectively arranged on two adjacent side walls of the hexagonal annular side wall; the multiple partition plates are arranged in the shell and distributed along the main diagonal lines of the regular hexagon of the bottom plate, and the inner space of the shell is divided into six triangular cavities. The two triangular cavities with the signal input port and the signal output port are completely isolated by a partition plate; and a coupling channel is reserved between the other adjacent triangular cavity partition plates. The band-pass cavity filter is small in size and simple in structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to cavity filter technical field especially relates to a regular hexagon resonant cavity filter. BACKGROUND

[0002] Microwave is a kind of electromagnetic wave with very high frequency and very short wavelength.In high frequency band, high frequency components are prone to radiation loss, resulting in reduced transmission efficiency and electromagnetic interference to the surrounding circuit.

[0003] Cavity filter belongs to one kind of microwave filter, with the advantages of solid structure, high working frequency band, low loss and large power capacity, and can be used for filtering microwave signal.

[0004] However, the filtering effect of the existing cavity filter is often limited by the volume, and the cavity filter often has a complex structure and needs manual adjustment of the resonant cavity. UTILITY MODEL CONTENT

[0005] In view of the above analysis, the utility model aims at providing a regular hexagon resonant cavity filter to solve the problem that the prior art lacks a resonant cavity filter with small volume and simple structure.

[0006] The utility model mainly aims at realizing the following technical scheme:

[0007] A regular hexagon resonant cavity filter, the resonant cavity filter includes a shell, a plurality of partitions, a signal input port and an output port; the shell includes a regular hexagon top plate, a bottom plate and a hexagonal annular side wall; the signal input port and the output port are arranged on two adjacent side walls of the hexagonal annular side wall respectively; the plurality of partitions are arranged inside the shell and arranged along the main diagonal of the regular hexagon of the bottom plate, to divide the space inside the shell into six triangular cavities; the two triangular cavities with the signal input port and the output port are completely isolated by the partition; the remaining adjacent triangular cavities have a coupling channel left in the middle of the partition.

[0008] Further, the partition between the two triangular cavities with the signal input port and the output port is a first partition; a second partition is arranged between every two adjacent triangular cavities; the upper and lower surfaces of the first partition and the second partition are in contact with the top plate and the bottom plate of the shell respectively; the first partition and the second partition are rectangular plates; the width of the first partition and the second partition is equal to the side length of the regular hexagon of the bottom plate, and the second partition is provided with a coupling channel in the center.

[0009] Further, the coupling channel is a circular through hole.

[0010] Further, the partition plate between the two triangular cavities with signal input port and output port is a first partition plate; two second partition plates are arranged between every two adjacent triangular cavities; the coupling channel is arranged between the two second partition plates; the upper and lower surfaces of the first and second partition plates are in contact with the top plate and the bottom plate of the shell respectively; the first and second partition plates are rectangular plates.

[0011] The width of the coupling channel is 45%-50% of the width of the second partition plate; and the height of the coupling channel is equal to the height of the second partition plate.

[0012] Further, the length of the upper and lower surfaces of the hexagonal shell is 6.785mm, the height of the shell is 5.7mm, and the thickness of the shell is 0.6mm.

[0013] Further, the diameter of the circular through hole is 2.6mm.

[0014] Further, one SMP radio frequency coaxial connector is arranged in the signal input port and the output port respectively.

[0015] Further, the distance between the axis of the SMP radio frequency coaxial connector and the lower surface of the bottom plate of the shell is 1.7mm.

[0016] Further, the material of the shell and the plurality of partition plates of the cavity filter is copper.

[0017] Further, the thickness of the partition plate is 0.3mm.

[0018] Compared with the prior art, the utility model at least can realize following beneficial effects one of:

[0019] 1、the utility model discloses a hexagonal resonant cavity filter including a shell, a plurality of partition plates, a signal input port and an output port, the shell includes a hexagonal top plate, a bottom plate and a hexagonal ring side wall, the signal input port and the output port are arranged on the adjacent two side walls of the hexagonal ring side wall respectively, the plurality of partition plates are arranged in the shell and are arranged along the main diagonal line of the hexagonal bottom plate, and divide the six triangular cavities in the shell into six triangular cavities, the two triangular cavities with the signal input port and the output port are completely isolated by the partition plate, and the coupling channel is left in the middle of the partition plate of the remaining adjacent triangular cavities, the length of the upper and lower surfaces of the hexagonal shell is 6.785mm, the height of the shell is 5.7mm, and the thickness of the shell is 0.6mm, which is a small-sized and simple-structured cavity filter.

[0020] 2、the material of the shell and the plurality of partition plates of the hexagonal resonant cavity filter is copper, and the copper has better electromagnetic shielding effect compared with other materials.

[0021] 3, the utility model discloses a kind of signal input port and output port of hexagonal resonant cavity filter side wall, which are respectively provided with one SMP radio frequency coaxial connector. The passband frequency range can be realized as 42-46GHz. It is a kind of high-frequency millimeter wave cavity bandpass filter.

[0022] The above technical solutions can be combined with each other to realize more preferred combination solutions. Other features and advantages of the present application will be described in the following content, and some advantages can be apparent from the description or understood by implementing the present application. The purposes and other advantages of the present application can be realized and obtained from the content specifically pointed out in the description and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings are only used for the purpose of illustrating specific embodiments and are not considered as limiting the present application. In the entire drawings, the same reference signs represent the same components.

[0024] Figure 1 It is an internal structure schematic diagram of the cavity filter with rectangular coupling channel for a kind of hexagonal resonant cavity filter coupling channel.

[0025] Figure 2 It is a top view size diagram of the cavity filter with rectangular coupling channel for a kind of hexagonal resonant cavity filter coupling channel.

[0026] Figure 3 It is a front view size diagram of a kind of hexagonal resonant cavity filter.

[0027] Figure 4 It is an internal structure schematic diagram of the cavity filter with circular hole coupling channel for a kind of hexagonal resonant cavity filter coupling channel.

[0028] REFERENCE NUMERALS:

[0029] 1-second baffle with rectangular coupling channel;

[0030] 2-signal input port;

[0031] 3-signal output port;

[0032] 4-hexagonal annular side wall;

[0033] 5-bottom plate;

[0034] 6-first triangular cavity;

[0035] 7-second triangular cavity;

[0036] 8-third triangular cavity;

[0037] 9-fourth triangular cavity;

[0038] 10 - Fifth triangular cavity;

[0039] 11-Sixth triangular cavity;

[0040] 12-First partition;

[0041] 13-The coupling channel is a second partition with a circular through hole. Detailed Implementation

[0042] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0043] A specific embodiment of this utility model discloses a regular hexagonal resonant cavity filter, such as... Figure 1 As shown. The resonant cavity filter includes a housing, multiple partitions, a signal input port 2, and an output port 3; the housing includes a regular hexagonal top plate, a bottom plate 5, and a hexagonal annular sidewall 4; the signal input port 2 and the output port 3 are respectively located on two adjacent sidewalls of the hexagonal annular sidewall 4; the multiple partitions are located inside the housing and arranged along the main diagonal of the regular hexagon of the bottom plate 5, dividing the internal space of the housing into six triangular cavities; the two triangular cavities with signal input ports 2 and output ports 3 are completely isolated by partitions; the partitions of the remaining adjacent triangular cavities have coupling channels in between.

[0044] Specifically, the upper and lower surfaces of the shell are regular hexagons of the same size, and the side surfaces are rectangles.

[0045] An SMP RF coaxial connector is provided in both signal input port 2 and output port 3.

[0046] The microwave signal enters the resonant cavity filter from the signal input port 2, passes through the first triangular cavity 6 to the sixth triangular cavity 11 in sequence, and is output from the SMP RF coaxial connector of the sixth triangular cavity 11 to obtain the bandpass filtered microwave signal.

[0047] The passband frequency range of the cavity filter is 42-46 GHz.

[0048] Main view dimensions as shown Figure 3 As shown, the distance between the axis of the SMP RF coaxial connector and the lower surface of the housing base plate 5 is 1.7mm.

[0049] In one specific embodiment of this utility model, the coupling channel is a circular through hole, such as... Figure 4As shown. The partition between the two triangular cavities with signal input port 2 and output port 3 is the first partition 12; a second partition 13 is provided between every two adjacent triangular cavities; the upper and lower surfaces of the first partition 12 and the second partition 13 are in contact with the top plate and the bottom plate 5 of the housing, respectively; the first partition 12 and the second partition 13 are both rectangular plates; the width of the first partition 12 and the second partition 13 is equal to the side length of the regular hexagon of the bottom plate 5, and a coupling channel is provided in the center of the second partition 13.

[0050] The coupling channel is a circular through hole.

[0051] Specifically, such as Figure 4 The two triangular cavities shown, each with a signal input port 2 and an output port 3, are designated as the first triangular cavity 6 and the sixth triangular cavity 11, respectively. The partition between the first triangular cavity 6 and the sixth triangular cavity 11 is the first partition 12. Starting from the first triangular cavity 6, the second to fifth triangular cavities 10 are arranged counter-clockwise. The partition between the remaining two adjacent triangular cavities is the second partition 13. A circular through-hole with a diameter of 2.6 mm is provided in the center of the second partition 13.

[0052] In another specific embodiment of this utility model, the coupling channel is a rectangular channel.

[0053] The partition between the two triangular cavities with signal input port 2 and output port 3 is the first partition 12; two second partitions 1 are provided between every two adjacent triangular cavities, and the coupling channel is provided between the two second partitions 1; the upper and lower surfaces of the first partition 12 and the second partition 1 are in contact with the top plate and the bottom plate 5 of the shell, respectively; the first partition 12 and the second partition 1 are both rectangular plates;

[0054] The width of the coupling channel is 45%-50% of the width of the second partition 1; the height of the coupling channel is equal to the height of the second partition 1.

[0055] Specifically, two second partition plates 1 are provided between the first triangular cavity 6 and the second triangular cavity 7, between the second triangular cavity 7 and the third triangular cavity 8, between the third triangular cavity 8 and the fourth triangular cavity 9, between the fourth triangular cavity 9 and the fifth triangular cavity 10, and between the fifth triangular cavity 10 and the sixth triangular cavity 11. One second partition plate 1 connects to the vertex of the regular hexagon on the inner surface of the shell, and the other second partition plate 1 starts from the central axis of the shell. The two second partition plates 1 between every two adjacent triangular cavities are arranged on the same main diagonal at a predetermined distance.

[0056] The coupling channel of this utility model is a rectangular cavity filter, as shown in the top view dimension diagram. Figure 2 As shown; the width s of the coupling channel is 1.2mm.

[0057] The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11. Figure 1 The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11.

[0058] The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11. Figure 2 The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11. The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11.

[0059] The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11. The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11.

[0060] The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11. Figure 3 The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11. The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11.

[0061] The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11. The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11.

[0062] Specifically, the process method of the embodiment is: using 3D printing technology to prepare a regular hexagonal resonant cavity filter model; the 3D printing uses metal copper powder as consumables, which has the characteristics of low cost and simple process. The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11.

[0063] The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11. The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11.

[0064] The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11. Figure 2 The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11. The first septum 12 is arranged between the first triangular cavity 6 and the sixth triangular cavity 11.

[0065] Compared with the prior art, the hexagonal resonant cavity filter provided by the embodiment comprises a shell, a plurality of partitions, a signal input port 2 and an output port 3; the shell comprises a hexagonal top plate, a bottom plate 5 and a hexagonal annular side wall 4; the signal input port 2 and the output port 3 are arranged on two adjacent side walls of the hexagonal annular side wall 4 respectively; the plurality of partitions are arranged inside the shell and are arranged along the main diagonal of the hexagonal bottom plate 5, so as to divide the space inside the shell into six triangular cavities; the two triangular cavities with the signal input port 2 and the output port 3 are completely isolated by the partitions; the remaining adjacent triangular cavities have coupling channels left between the partitions. The length of the hexagonal side of the upper and lower surfaces is 6.785 mm, the height of the shell is 5.7 mm, and the thickness of the shell is 0.6 mm. The hexagonal resonant cavity filter is a miniaturized and simple-structured cavity filter. The shell and the plurality of partitions of the hexagonal resonant cavity filter provided by the embodiment are made of copper, and have better electromagnetic shielding effect compared with other materials. The signal input port 2 and the output port 3 of the hexagonal resonant cavity filter provided by the embodiment are respectively provided with an SMP radio frequency coaxial connector. The passband frequency range that can be achieved is 42-46 GHz. The hexagonal resonant cavity filter is a high-frequency millimeter wave cavity bandpass filter.

[0066] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A hexagonal resonant cavity filter, characterized by, The resonant cavity filter comprises a shell, a plurality of partitions, a signal input port and an output port; the shell comprises a hexagonal top plate, a bottom plate and a hexagonal annular side wall; the signal input port and the output port are respectively arranged on two adjacent side walls of the hexagonal annular side wall; the plurality of partitions are arranged inside the shell and are arranged along the main diagonal of the hexagonal bottom plate, thereby dividing the space inside the shell into six triangular cavities; The two triangular cavities with the signal input port and the output port are completely separated by the partitions; the remaining adjacent triangular cavities are separated by partitions with coupling channels in the middle.

2. The hexagonal resonator cavity filter of claim 1, wherein, The partition between the two triangular cavities with the signal input port and the output port is a first partition; a second partition is arranged between every two adjacent triangular cavities; the upper and lower surfaces of the first partition and the second partition are respectively in contact with the top plate and the bottom plate of the shell; the first partition and the second partition are rectangular plates; the width of the first partition and the second partition is equal to the length of the hexagonal side of the bottom plate; a coupling channel is arranged at the center of the second partition.

3. The hexagonal resonator cavity filter of claim 2, wherein, The coupling channel is a circular through hole.

4. The hexagonal resonator cavity filter of claim 1, wherein, The partition between the two triangular cavities with the signal input port and the output port is a first partition; two second partitions are arranged between every two adjacent triangular cavities, and a coupling channel is arranged between the two second partitions; the upper and lower surfaces of the first partition and the second partition are respectively in contact with the top plate and the bottom plate of the shell; the first partition and the second partition are rectangular plates. The width of the coupling channel is 45%-50% of the width of the second partition. The height of the coupling channel is equal to the height of the second partition.

5. The hexagonal resonator cavity filter of claim 1, wherein, The length of the hexagonal side of the upper and lower surfaces of the shell is 6.785 mm, the height of the shell is 5.7 mm, and the thickness of the shell is 0.6 mm.

6. The hexagonal resonator cavity filter of claim 3, wherein, The diameter of the circular through hole is 2.6 mm.

7. The hexagonal resonator cavity filter of claim 1, wherein, An SMP radio frequency coaxial connector is arranged in each of the signal input port and the output port.

8. The hexagonal resonator cavity filter of claim 7, wherein, The distance between the center of the SMP radio frequency coaxial connector and the lower surface of the bottom plate of the shell is 1.7 mm.

9. The hexagonal resonator cavity filter of claim 1, wherein, The shell and the plurality of partitions of the cavity filter are made of copper.

10. The hexagonal resonator cavity filter of claim 1, wherein, The thickness of the partition is 0.3 mm.

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