Filter capable of realizing double-path filter function

Abstract

The utility model belongs to the technical field of filters, and particularly relates to a filter capable of realizing functions of a two-way filter, which comprises a first mainboard and a second mainboard. A first transmission copper wire is fixedly mounted on the surface of the first mainboard, a second transmission copper wire is fixedly mounted on the surface of the second mainboard, an inductor is fixedly mounted on the surface of the first transmission copper wire, and a first capacitor is fixedly mounted on one side of the inductor; through the arrangement of the first main board and the second main board, installation sites can be conveniently provided for the inductor, the capacitor and the resistor, the first main board is used for high-pass filtering, allows frequency components higher than cut-off frequency to pass through, filters frequency components lower than the cut-off frequency and is used for filtering low-frequency noise or low-frequency components, and therefore high-frequency signals are reserved; the second main board is used for low-pass filtering, allows frequency components lower than the cut-off frequency to pass through and filters out frequency components higher than the cut-off frequency.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a filter that can realize the function of a dual-channel filter. Background Technique

[0002] With the continuous development of communication technology, the product requirements for filters are getting higher and higher. Multiple operators and multiple systems bring new requirements for high suppression and low loss. Based on this requirement, through the innovation of the filter circuit principle structure, the design of a single-channel filter is realized into a two-channel filter.

[0003] For example, a filter that can realize the function of a dual-channel filter with the publication number of CN210986055U. The single-channel filter includes an input feeding circuit, an output feeding circuit, and a resonator group. The input feeding circuit is coupled to the resonator group; the output feeding circuit is coupled to the resonator group; the resonator group includes a plurality of resonators, and the plurality of resonators are coupled to each other adjacent to each other; a cross-coupling structure is added between the plurality of resonators included in the resonator group, and a dual-channel filter is realized through the cross-coupling structure and frequency matching. The utility model provides a single-channel filter, and a cross-coupling structure is added to the single-channel filter. The cross-coupling structure includes at least 2 cross-coupling units. By adjusting the form of at least 2 cross-coupling units and frequency matching, the cross-coupling structure is added to the middle of the single-channel filter to realize the function of a dual-channel filter, which can effectively reduce the product volume, the product structure is more flexible, and the product has better suppression, smaller insertion loss, and more flexible layout.

[0004] However, according to the working principle proposed in the above patent, the applicant believes that although the above device improves the layout flexibility to a certain extent, in actual use, it is difficult for the above device to achieve low-pass and high-pass dual-channel filtering, and it is easy to affect the filtering efficiency during use.

[0005] Therefore, in view of the above problems, a filter that can realize the function of a dual-channel filter is proposed. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is: there is a disadvantage in the prior art that low-pass and high-pass dual-channel filtering cannot be achieved. For this reason, we propose a filter that can realize the function of a dual-channel filter.

[0007] The technical solution adopted by the present utility model to solve its technical problems is as follows: A filter capable of realizing the function of a dual-channel filter, comprising a first main board and a second main board; a first transmission copper wire is fixedly installed on the surface of the first main board, a second transmission copper wire is fixedly installed on the surface of the second main board, an inductor is fixedly installed on the surface of the first transmission copper wire, a first capacitor is fixedly installed on one side of the inductor, a second capacitor is fixedly installed on the surface of the second transmission copper wire, and a resistor is fixedly installed on one side of the second capacitor.

[0008] Preferably, fixing plates are fixedly installed on both sides of the first main board and the second main board, and an outer ring board is fixedly installed on the outside of the fixing plates.

[0009] Preferably, a connecting screw rod is movably connected to the outside of the outer ring board, an inner tightening nut is threadedly installed on the inner side of the surface of the connecting screw rod, and an outer tightening nut is threadedly installed on the outer side of the surface of the connecting screw rod.

[0010] Preferably, a bottom board is fixedly installed at the bottom of the first main board and the second main board, and a sleeve box is movably installed on the top of the bottom board.

[0011] Preferably, sleeve pipes are fixedly installed on both sides of the sleeve box, and the connecting screw rod is movably installed inside the sleeve pipes.

[0012] Preferably, extension plates are fixedly installed on both sides of the bottom board, and fixing holes are formed on the surfaces of the extension plates.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. Through the setting of the first main board and the second main board, the present utility model facilitates providing an installation site for the inductor, capacitor, and resistor. The first main board functions as a high-pass filter, which allows frequency components higher than the cut-off frequency to pass through and filters out frequency components lower than the cut-off frequency, used to filter out low-frequency noise or low-frequency components, thereby retaining high-frequency signals. The second main board functions as a low-pass filter, which allows frequency components lower than the cut-off frequency to pass through and filters out frequency components higher than the cut-off frequency, used to filter out high-frequency noise or high-frequency interference, thereby retaining low-frequency signals. By integrating the design of the high-pass filter and the low-pass filter, the present device can realize a dual-channel filter with perfect functions, which is used in various application scenarios that require separate processing of two signal channels.

[0015] 2. The utility model facilitates the connection between the external transmission signal and the internal main board through the settings of the connection fixing plate and the outer ring plate. Through the setting of the connection screw rod, it is convenient to transmit the filtered signal. Through the settings of the inner tightening nut and the outer tightening nut, it is convenient to fix the signal transmission line connection components. Through the setting of the sleeve box, it is convenient to protect the main board structure. Through the setting of the sleeve tube, it is convenient to limit the connection screw rod and prevent it from falling off. Through the settings of the extension plate and the fixing holes, it is convenient to fixedly install the whole device at a certain place. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a front view three-dimensional schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 It is an enlarged three-dimensional schematic diagram of the structure after the sleeve box of the present utility model is removed;

[0019] Figure 3 It is a bottom view three-dimensional schematic diagram of the sleeve box structure of the present utility model;

[0020] Figure 4 It is a partial enlarged schematic diagram of the connection screw rod structure of the present utility model.

[0021] In the figure: 1, the first main board; 2, the second main board; 3, the first transmission copper wire; 4, the second transmission copper wire; 5, the inductor; 6, the first capacitor; 7, the second capacitor; 8, the resistor; 9, the connection fixing plate; 10, the outer ring plate; 11, the connection screw rod; 12, the inner tightening nut; 13, the outer tightening nut; 14, the bottom plate; 15, the sleeve box; 16, the sleeve tube; 17, the extension plate; 18, the fixing holes. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0023] The following further elaborates on the present application in detail Figures 1-4 with reference to the attached drawings

[0024] An embodiment of the present application discloses a filter capable of realizing the function of a dual-channel filter. Refer to Figure 1 and Figure 4 , a filter capable of realizing the function of a dual-channel filter, includes a first main board 1 and a second main board 2; a first transmission copper wire 3 is fixedly installed on the surface of the first main board 1, and a second transmission copper wire 4 is fixedly installed on the surface of the second main board 2. An inductor 5 is fixedly installed on the surface of the first transmission copper wire 3, a first capacitor 6 is fixedly installed on one side of the inductor 5, a second capacitor 7 is fixedly installed on the surface of the second transmission copper wire 4, and a resistor 8 is fixedly installed on one side of the second capacitor 7; the first main board 1 and the second main board 2 facilitate providing an installation site for the inductor 5, capacitors, and resistor 8. The first main board 1 functions as a high-pass filter, which allows frequency components higher than the cut-off frequency to pass through and filters out frequency components lower than the cut-off frequency, used to filter out low-frequency noise or low-frequency components, thereby retaining high-frequency signals. The second main board 2 functions as a low-pass filter, which allows frequency components lower than the cut-off frequency to pass through and filters out frequency components higher than the cut-off frequency, used to filter out high-frequency noise or high-frequency interference, thereby retaining low-frequency signals. By integrating the design of the high-pass filter and the low-pass filter, this device can realize a fully functional dual-channel filter for various application scenarios that require separate processing of two signal channels.

[0025] Refer to Figure 1 and Figure 2 , fixing plates 9 are fixedly installed on both sides of the first main board 1 and the second main board 2, and an outer ring plate 10 is fixedly installed on the outside of the fixing plates 9; the fixing plates 9 and the outer ring plate 10 facilitate the connection between the external transmission signal and the internal main board.

[0026] Refer to Figure 2 and Figure 3 , a connecting screw rod 11 is movably connected to the outside of the outer ring plate 10. An inner tightening nut 12 is threadedly installed on the inner side of the surface of the connecting screw rod 11, and an outer tightening nut 13 is threadedly installed on the outer side of the surface of the connecting screw rod 11; the connecting screw rod 11 facilitates the transmission of the filtered signal, and the inner tightening nut 12 and the outer tightening nut 13 facilitate the fixation of the signal transmission line connection components.

[0027] Refer to Figure 3 and Figure 4 , a bottom plate 14 is fixedly installed at the bottom of the first main board 1 and the second main board 2, and a sleeve box 15 is movably installed on the top of the bottom plate 14; the sleeve box 15 facilitates the protection of the main board structure.

[0028] Refer to Figure 1 and Figure 4 , sleeves 16 are fixedly installed on both sides of the sleeve box 15, and the connecting screw rod 11 is movably installed inside the sleeves 16; the sleeves 16 facilitate the limitation of the connecting screw rod 11 to prevent it from falling off.

[0029] Reference Figure 3 and Figure 4 On both sides of the bottom plate 14, extension plates 17 are fixedly installed, and fixing holes 18 are formed on the surfaces of the extension plates 17; the overall device can be fixedly installed somewhere through the extension plates 17 and the fixing holes 18.

[0030] Working principle: In this device, the first main board 1 functions as a high-pass filter, which allows frequency components higher than the cut-off frequency to pass through and filters out frequency components lower than the cut-off frequency, used to filter out low-frequency noise or low-frequency components, so as to retain high-frequency signals. The second main board 2 functions as a low-pass filter, which allows frequency components lower than the cut-off frequency to pass through and filters out frequency components higher than the cut-off frequency, used to filter out high-frequency noise or high-frequency interference, so as to retain low-frequency signals. By integrating the design of the high-pass filter and the low-pass filter, this device can achieve a fully functional dual-channel filter for various application scenarios that require separate processing of two signal channels.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A filter capable of realizing a dual-path filter function, characterized in that: The invention comprises a first mainboard (1) and a second mainboard (2); a first transmission copper wire (3) is fixedly mounted on the surface of the first mainboard (1), a second transmission copper wire (4) is fixedly mounted on the surface of the second mainboard (2), an inductor (5) is fixedly mounted on the surface of the first transmission copper wire (3), a first capacitor (6) is fixedly mounted on one side of the inductor (5), a second capacitor (7) is fixedly mounted on the surface of the second transmission copper wire (4), and a resistor (8) is fixedly mounted on one side of the second capacitor (7).

2. A filter capable of realizing a dual-path filter function according to claim 1, characterized in that: A fixing plate (9) is fixedly mounted on both sides of the first main plate (1) and the second main plate (2), and an outer ring plate (10) is fixedly mounted on the outer side of the fixing plate (9).

3. A filter capable of realizing a dual-path filter function according to claim 2, characterized in that: A connecting screw (11) is movably connected to the outer side of the outer ring plate (10), an inner thread on the surface of the connecting screw (11) is installed with an inner tightening nut (12), and an outer thread on the surface of the connecting screw (11) is installed with an outer tightening nut (13).

4. A filter capable of realizing a dual-path filter function according to claim 1, characterized in that: A bottom plate (14) is fixedly mounted on the bottom of the first main plate (1) and the second main plate (2), and a sleeve box (15) is movably mounted on the top of the bottom plate (14).

5. A filter capable of realizing a dual-path filter function according to claim 4, characterized in that: Sleeves (16) are fixedly mounted on both sides of the sleeve box (15), and a connecting screw (11) is movably mounted on the inner side of the sleeve (16).

6. A filter capable of realizing a dual-path filter function according to claim 4, characterized in that: Extension plates (17) are fixedly mounted on both sides of the bottom plate (14), and fixing holes (18) are provided on the surfaces of the extension plates (17).

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