High-pass filter structure

Abstract

The utility model belongs to the technical field of radio frequency communication equipment, and particularly relates to a high-pass filter structure. Comprising a cavity, a high-pass piece and a PEEK screw, the cavity is provided with the high-pass piece, and the high-pass piece is used for being fixed on the cavity through the PEEK screw. The PEEK screw penetrates through the high-pass sheet and then is in threaded connection with the cavity, so that the high-pass sheet is fixed on the cavity, different frequency band indexes can be conveniently adjusted by adjusting the tightness of the PEEK screw, the operation is convenient, and the adjusting range is wide. And the high-pass sheet is fixed through the PEEK screw, so that the high-pass sheet and the cavity can be connected firmly, and unstable product indexes caused by factors such as vibration transportation and the like are avoided. Experiments prove that the structure of the filter is wide in adjustable frequency range, the frequency band of 690-4200 MHz can be adjusted, meanwhile, different frequency band ranges of 1420-4200 MHZ / 1700-6000 MHz and the like can be adjusted, and the structure can be widely applied to design and production of products such as a combiner and the filter.

Description

TECHNICAL FIELD

[0001] The utility model belongs to radio frequency communication equipment technical field, especially related to a high pass filter structure. BACKGROUND

[0002] As an important component of radio frequency system, high pass filter is widely used in various wireless product equipment. High pass filter is usually composed of inductance and capacitance and other elements. The high pass filter in the related art includes a plurality of capacitors connected in series in a circuit and inductors connected to the corresponding capacitors respectively.

[0003] However, the frequency band coverage of the existing high pass filter is small, and it is difficult to adjust to different frequency bands. Therefore, it is necessary to design a high pass filter structure to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model provides a high pass filter structure to solve the problems in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a high pass filter structure, comprising a cavity, a high pass sheet and a PEEK screw, the cavity is provided with a high pass sheet, the high pass sheet is used for being fixed on the cavity through the PEEK screw.

[0006] Further, the high pass sheet includes a first high pass sheet, a second high pass sheet, a third high pass sheet, a fourth high pass sheet, a fifth high pass sheet, a sixth high pass sheet, a seventh high pass sheet and an eighth high pass sheet, the first high pass sheet, the second high pass sheet, the third high pass sheet, the fourth high pass sheet and the fifth high pass sheet are sequentially distributed along the length direction of the cavity and are coupled by capacitive mode.

[0007] The first high pass sheet, the second high pass sheet, the third high pass sheet, the fourth high pass sheet and the fifth high pass sheet are fixed on the cavity through the PEEK screw.

[0008] The sixth high pass sheet and the second high pass sheet are connected through inductive structure, the seventh high pass sheet and the third high pass sheet are connected through inductive structure, and the eighth high pass sheet and the fourth high pass sheet are connected through inductive structure.

[0009] Further, PTFE insulation support is arranged between the first high pass sheet and the second high pass sheet, between the second high pass sheet and the third high pass sheet, between the third high pass sheet and the fourth high pass sheet and between the fourth high pass sheet and the fifth high pass sheet.

[0010] Further, the sixth high-pass sheet and the second high-pass sheet, the seventh high-pass sheet and the third high-pass sheet, and the eighth high-pass sheet and the fourth high-pass sheet are arranged as an integrated structure.

[0011] Further, the left and right ends of the cavity are respectively provided with a first port and a second port.

[0012] The technical effects and advantages of the present application are as follows:

[0013] The PEEK screw is screwed through the high-pass sheet and is screwed with the cavity, so as to fix the high-pass sheet on the cavity.

[0014] The PEEK screw is used to fix the high-pass sheet, so as to ensure that the connection between the high-pass sheet and the cavity is firm, and the product index is not unstable due to factors such as vibration and transportation.

[0015] The use of the PEEK screw can solve the problem of unstable intermodulation of the high-pass structure and poor intermodulation value.

[0016] Through experimental verification, the product intermodulation can be ensured to be above 160dBc.

[0017] The other features and advantages of the present application will be described in the following description, and some of them will become apparent from the description, or will be understood by those skilled in the art through implementation of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description.

[0019] Figure 1 The structure of the high-pass filter structure of the embodiment of the present application is shown in the structure schematic view.

[0020] Figure 2 Another view of the structure of the high-pass filter structure of the embodiment of the present application is shown in the structure schematic view.

[0021] Reference signs: 1, cavity; 2, PEEK screw; 3, first port; 4, second port; 5, first high-pass sheet; 6, second high-pass sheet; 7, third high-pass sheet; 8, fourth high-pass sheet; 9, fifth high-pass sheet; 10, sixth high-pass sheet; 11, seventh high-pass sheet; 12, eighth high-pass sheet. DETAILED DESCRIPTION

[0022] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely explained in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] As shown in the drawings, Figure 1 The high-pass filter structure in the embodiments of the utility model comprises a cavity 1, a high-pass sheet and a PEEK screw 2, the cavity 1 is provided with the high-pass sheet, and the high-pass sheet is used to be fixed on the cavity 1 through the PEEK screw 2.

[0024] Specifically, PEEK is a polyether ether ketone material. Secondly, the passband frequency of the high-pass filter structure is 600-4200MHz, basically covering 2G, 3G, 4G and 5G communication frequency bands, and having 50dB suppression to DC-520MHz.

[0025] In the embodiment, the PEEK screw 2 is used to be screwed with the cavity 1 after passing through the high-pass sheet, so as to fix the high-pass sheet on the cavity 1. The tightness of the PEEK screw 2 can be adjusted, so that different frequency band indexes can be conveniently adjusted, the operation is convenient, and the adjustment range is wide.

[0026] Secondly, the high-pass sheet can be fixed through the PEEK screw 2, so that the connection between the high-pass sheet and the cavity 1 is relatively firm, and the product indexes will not be unstable due to factors such as vibration and transportation.

[0027] Secondly, by using the PEEK screw 2, the problem of unstable intermodulation of the high-pass structure and poor intermodulation value can be solved.

[0028] In addition, through experimental verification, the product intermodulation can be guaranteed to be more than 160dBc. Through experimental verification, the filter structure of the structure can adjust a wide frequency range, can adjust 690-4200MHz frequency band, and can also adjust different frequency band ranges such as 1420-4200MHZ / 1700-6000MHz, so that the structure can be widely applied in the design and production of combiners and filters.

[0029] Optionally, as shown in Figure 1 and Figure 2 The high-pass sheet includes a first high-pass sheet 5, a second high-pass sheet 6, a third high-pass sheet 7, a fourth high-pass sheet 8, a fifth high-pass sheet 9, a sixth high-pass sheet 10, a seventh high-pass sheet 11, and an eighth high-pass sheet 12, which are sequentially arranged along the length direction of the cavity 1 and are coupled in a capacitive manner.

[0030] The first high-pass sheet 5, the second high-pass sheet 6, the third high-pass sheet 7, the fourth high-pass sheet 8, and the fifth high-pass sheet 9 are fixed on the cavity 1 by the PEEK screw 2.

[0031] The sixth high-pass sheet 10 is connected to the second high-pass sheet 6 through an inductive structure, the seventh high-pass sheet 11 is connected to the third high-pass sheet 7 through an inductive structure, and the eighth high-pass sheet 12 is connected to the fourth high-pass sheet 8 through an inductive structure.

[0032] In this embodiment, by arranging the high-pass sheet to include the first high-pass sheet 5, the second high-pass sheet 6, the third high-pass sheet 7, the fourth high-pass sheet 8, and the fifth high-pass sheet 9, the first high-pass sheet 5, the second high-pass sheet 6, the third high-pass sheet 7, the fourth high-pass sheet 8, and the fifth high-pass sheet 9 are sequentially arranged along the length direction of the cavity 1, which facilitates uniform distribution of the high-pass sheet on the cavity 1.

[0033] Secondly, by coupling the first high-pass sheet 5, the second high-pass sheet 6, the third high-pass sheet 7, the fourth high-pass sheet 8, and the fifth high-pass sheet 9 in a capacitive manner, and connecting the sixth high-pass sheet 10 to the second high-pass sheet 6 through an inductive structure, the seventh high-pass sheet 11 to the third high-pass sheet 7 through an inductive structure, and the eighth high-pass sheet 12 to the fourth high-pass sheet 8 through an inductive structure, the first high-pass sheet 5, the second high-pass sheet 6, the third high-pass sheet 7, the fourth high-pass sheet 8, the fifth high-pass sheet 9, the sixth high-pass sheet 10, the seventh high-pass sheet 11, and the eighth high-pass sheet 12 are combined into a whole.

[0034] In addition, one or more PEEK screws 2 are used to fix the first high-pass sheet 5, the second high-pass sheet 6, the third high-pass sheet 7, the fourth high-pass sheet 8, the fifth high-pass sheet 9, the sixth high-pass sheet 10, the seventh high-pass sheet 11, and the eighth high-pass sheet 12 on the cavity 1, which facilitates the fixation of the high-pass sheet on the cavity 1.

[0035] Optionally, PTFE insulation supports are arranged between the first high-pass sheet 5 and the second high-pass sheet 6, between the second high-pass sheet 6 and the third high-pass sheet 7, between the third high-pass sheet 7 and the fourth high-pass sheet 8, and between the fourth high-pass sheet 8 and the fifth high-pass sheet 9.

[0036] Specifically, the PTFE is a polytetrafluoroethylene material.

[0037] In the embodiment, by arranging the PTFE insulation supports between the first high-pass sheet 5 and the second high-pass sheet 6, between the second high-pass sheet 6 and the third high-pass sheet 7, between the third high-pass sheet 7 and the fourth high-pass sheet 8, and between the fourth high-pass sheet 8 and the fifth high-pass sheet 9, short circuit can be avoided.

[0038] Optionally, as shown in the drawings, the sixth high-pass sheet 10, the second high-pass sheet 6, the seventh high-pass sheet 11, and the third high-pass sheet 7, and the eighth high-pass sheet 12 and the fourth high-pass sheet 8 are arranged in an integrated structure. Figure 1

[0039] In the embodiment, by arranging the sixth high-pass sheet 10, the second high-pass sheet 6, the seventh high-pass sheet 11, and the third high-pass sheet 7, and the eighth high-pass sheet 12 and the fourth high-pass sheet 8 in an integrated structure, production cost can be reduced and production efficiency can be improved.

[0040] Optionally, as shown in the drawings, the left and right ends of the cavity 1 are respectively provided with the first port 3 and the second port 4. Figure 1

[0041] In the embodiment, the first port 3 and the second port 4 are arranged at the left and right ends of the cavity 1, respectively, which can facilitate the connection of the cavity 1 to other devices, so that the high-pass filter structure can be applied to the design and production of combiners, filters, and the like.

[0042] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.​​

Claims

1. A high-pass filter structure, characterized in that: It comprises a cavity (1), a high-pass sheet and a PEEK screw (2), wherein the cavity (1) is provided with the high-pass sheet, and the high-pass sheet is used to be fixed on the cavity (1) via the PEEK screw (2); The high-pass sheet comprises a first high-pass sheet (5), a second high-pass sheet (6), a third high-pass sheet (7), a fourth high-pass sheet (8), a fifth high-pass sheet (9), a sixth high-pass sheet (10), a seventh high-pass sheet (11) and an eighth high-pass sheet (12); the first high-pass sheet (5), the second high-pass sheet (6), the third high-pass sheet (7), the fourth high-pass sheet (8) and the fifth high-pass sheet (9) are sequentially distributed along the length direction of the cavity (1) and are capacitively coupled; The first high-pass sheet (5), the second high-pass sheet (6), the third high-pass sheet (7), the fourth high-pass sheet (8), and the fifth high-pass sheet (9) are all fixed to the cavity (1) by the PEEK screws (2); The sixth high-pass plate (10) is connected to the second high-pass plate (6) via an inductive structure, the seventh high-pass plate (11) is connected to the third high-pass plate (7) via an inductive structure, and the eighth high-pass plate (12) is connected to the fourth high-pass plate (8) via an inductive structure.

2. The high-pass filter structure according to claim 1, wherein: PTFE insulating supports are provided between the first high-pass sheet (5) and the second high-pass sheet (6), between the second high-pass sheet (6) and the third high-pass sheet (7), between the third high-pass sheet (7) and the fourth high-pass sheet (8), and between the fourth high-pass sheet (8) and the fifth high-pass sheet (9).

3. The high-pass filter structure according to claim 1, wherein: The sixth high-pass sheet (10) and the second high-pass sheet (6), the seventh high-pass sheet (11) and the third high-pass sheet (7), and the eighth high-pass sheet (12) and the fourth high-pass sheet (8) are all configured as an integrated structure.

4. The high-pass filter structure according to claim 3, characterized in that: The left and right ends of the cavity (1) are respectively provided with a first port (3) and a second port (4).

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