Universal band elimination filter structure

Abstract

The utility model discloses a universal band elimination filter structure, and belongs to the field of filters. A universal band elimination filter structure comprises a cavity, two rib plates are arranged in the cavity, and the cavity is divided into three chambers by the two rib plates; the two side walls of the cavity are fixedly connected with an input connector and an output connector respectively, the ribbed plate is connected with a band-stop transmission copper rod, and the two ends of the band-stop transmission copper rod correspond to the input connector and the output connector respectively. Each cavity is internally connected with a resonant column, the resonant column is provided with a fixed station, the fixed station is connected with a coupling copper sheet, and the distance between the coupling copper sheet and the band-stop transmission copper bar is adjustable; according to the utility model, the problems of difficult design and debugging, long debugging time span and the like of the band elimination filter in the design, assembly, debugging and debugging process are solved, and the characteristics of stability, consistency, reliability, operability, low cost and the like are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field especially relates to a general type band elimination filter structure. BACKGROUND

[0002] Band elimination filter is a kind of special filter, is used to block the signal of specific frequency range;Its design is used to allow most frequency components to pass in the whole frequency range, and the signal in certain specific frequency range (i.e. stop band or notch band) is attenuated to extremely low level;Such filter plays an important role in signal processing, and can effectively remove or suppress unwanted frequency components‌.

[0003] In the design and debugging process of band elimination filter, the conventional band-pass filter cannot meet the requirement due to the relatively strict index, so band elimination is used for design, due to the relatively wide bandwidth, the index is not easy to realize, so different structures are used to realize, due to the limitation of structure, therefore lead to the processing cost and production cost cannot be effectively controlled, lead to cost greatly rises, in view of this, the utility model is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problems in prior art, and provides a general type band elimination filter structure.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A general type band elimination filter structure, including cavity, two rib plates are arranged in the cavity, two rib plates divide the cavity into three chambers;

[0007] The both sides of the cavity are fixedly connected with input connector and output connector respectively, the rib plate is connected with band elimination transmission copper bar, and the both ends of the band elimination transmission copper bar correspond to the input connector and the output connector respectively;

[0008] Resonance column is connected in each chamber, the resonance column is provided with fixing table, the fixing table is connected with coupling copper sheet, and the distance between the coupling copper sheet and the band elimination transmission copper bar is adjustable.

[0009] Preferably, the input connector is connected with input fixed plate, the input fixed plate is provided with input fixed screw, and one end of the input fixed screw is connected with the outer wall of the cavity in screw thread.

[0010] Further, the output connector is connected with output fixed plate, the output fixed plate is provided with output fixed screw, and one end of the output fixed screw is connected with the outer wall of the cavity in screw thread.

[0011] Further, both sides of the cavity are provided with round holes, the input joint and the output joint are connected in the round holes on both sides of the cavity, the input joint is provided with an input core rod, the output joint is provided with an output core rod, the input core rod and the output core rod respectively pass through the round holes on both sides of the cavity and are placed in the cavity.

[0012] Further, both ends of the band-stop transmission copper rod are respectively provided with a first connecting hole and a second connecting hole, one end of the input core rod placed in the cavity is inserted into the first connecting hole, and one end of the output core rod placed in the cavity is inserted into the second connecting hole.

[0013] Further, the rib plate is provided with a U-shaped groove, the outer wall of the band-stop transmission copper rod is provided with a supporting disc, the supporting disc is arranged in the U-shaped groove, and both sides of the supporting disc are fixedly connected with supporting plates, and the supporting plates are respectively attached to the outer walls of both sides of the rib plate.

[0014] Preferably, the resonance column is provided with a recess, the fixed table is threadedly connected with a copper sheet fixing screw, and the coupling copper sheet is fixedly connected to the fixed table through the copper sheet fixing screw.

[0015] Further, the cavity is provided with a cover plate, the cover plate is provided with a locking screw, the cavity and the rib plate are both provided with mounting holes, and the bottom of the locking screw passes through the cover plate and is threadedly connected in the mounting hole.

[0016] Further, the cover plate is provided with a first tuning screw, the top of the first tuning screw is threadedly connected with a first tuning nut, the first tuning nut abuts against the top outer wall of the cover plate, and the first tuning screw is provided with a plurality of first tuning nuts.

[0017] Preferably, the cover plate is also provided with a second tuning screw, the top of the second tuning screw is threadedly connected with a second tuning nut, the second tuning nut abuts against the top outer wall of the cover plate, the bottom of the second tuning screw is placed in the cavity, and one end of the second tuning screw placed in the cavity is placed above the coupling copper sheet.

[0018] Compared with the prior art, the utility model provides a kind of general band-stop filter structure, with the following beneficial effects:

[0019] 1, the general band-stop filter structure, the input signal will pass through band-stop transmission copper rod, to realize product index, realize easy, simple structure, it is easy to control, second, when using, it can use hook needle or other debugging tool to adjust the distance between coupling copper sheet and band-stop transmission copper rod, to realize different coupling values, specifically, hook needle can be inserted into cavity interior to move coupling copper sheet to make it away from or close to band-stop transmission copper rod to realize different coupling values.

[0020] 2. This general-purpose band-stop filter structure, by snapping the support disk and support plate into the U-shaped groove, can fix the position of the band-stop transmission copper rod, thereby making the connection more stable and easier to use with the coupling copper sheet.

[0021] The parts not covered in this device are the same as or can be implemented using existing technologies. This utility model simplifies the structure of the traditional band-stop filter duplexer and maximizes the simplification of the structure of the main transmission line plus resonant cavity based on the basic principle. This structure is simple to design, low in cost, and easy to control in batches. It solves the problems of difficult design and debugging and long debugging time in the design, assembly and debugging process of band-stop filters, and increases the characteristics of stability, consistency, reliability, operability and low cost. Attached Figure Description

[0022] Figure 1 This invention provides a schematic diagram of a general-purpose band-stop filter structure. Figure 1 ;

[0023] Figure 2 This invention provides a schematic diagram of a general-purpose band-stop filter structure. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of a general-purpose band-stop filter structure without a cover plate proposed in this utility model;

[0025] Figure 4 This is a cross-sectional schematic diagram of a general-purpose band-stop filter structure proposed in this utility model;

[0026] Figure 5 This is a top cross-sectional view of a general-purpose band-stop filter structure proposed in this utility model;

[0027] Figure 6 This is a front cross-sectional schematic diagram of a general-purpose band-stop filter structure proposed in this utility model;

[0028] Figure 7 This is a schematic diagram of the band-stop transmission copper rod in a general-purpose band-stop filter structure proposed in this utility model;

[0029] Figure 8 This invention proposes a general-purpose band-stop filter structure. Figure 4 Enlarged view of section A;

[0030] Figure 9 This invention proposes a general-purpose band-stop filter structure. Figure 4 Enlarged view of section B.

[0031] Fig. 1, cavity; 101, cover plate; 102, locking screw; 103, first tuning screw; 104, first tuning nut; 105, second tuning screw; 106, second tuning nut; 107, mounting hole; 108, round hole; 2, input connector; 201, input fixing plate; 202, input fixing screw; 203, input core rod; 3, output connector; 301, output fixing plate; 302, output fixing screw; 303, output core rod; 4, rib plate; 401, U-shaped groove; 402, resonant column; 403, recess; 404, fixing table; 405, coupling copper sheet; 406, copper sheet fixing screw; 5, band-stop transmission copper rod; 501, support disc; 502, support plate; 503, first connecting hole; 504, second connecting hole. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. EMBODIMENT

[0034] REFERENCE Figures 1-9 A general type band-stop filter structure, comprising a cavity 1, characterized in that two rib plates 4 are arranged in the cavity 1, the two rib plates 4 divide the cavity 1 into three chambers; an input connector 2 and an output connector 3 are fixedly connected to the two side walls of the cavity 1 respectively, a band-stop transmission copper rod 5 is connected to the rib plate 4, and the two ends of the band-stop transmission copper rod 5 correspond to the input connector 2 and the output connector 3 respectively; a resonant column 402 is connected in each chamber, a fixing table 404 is arranged on the resonant column 402, a coupling copper sheet 405 is connected to the fixing table 404, and the distance between the coupling copper sheet 405 and the band-stop transmission copper rod 5 is adjustable.

[0035] In this embodiment, when in use, signals can be received and input through the input joint 2 arranged on the outer wall of the cavity 1. The input signals will pass through the band-stop transmission copper rod 5, so as to realize the product index, which is easy to realize, simple in structure and convenient to control. In addition, when in use, the distance between the coupling copper sheet 405 and the band-stop transmission copper rod 5 can be adjusted by using a hook needle or other debugging tools, so as to realize different coupling values. Specifically, the hook needle can be inserted into the cavity 1 to move the coupling copper sheet 405 away from or close to the band-stop transmission copper rod 5 to realize different coupling values. Then the signals will be output through the output joint 3 for the next step of work.

[0036] Specifically, the cavity 1 can be divided into a plurality of cavities by arranging the rib plate 4, so as to realize different coupling values in each cavity, which is more convenient for debugging and use. The resonant column 402 arranged can determine the resonant frequency of the filter, so that the filter can adapt to different working frequency requirements, improve the flexibility and applicability of the filter, and the fixing table 404 arranged is to facilitate the connection and installation of the coupling copper sheet 405. By arranging the rib plate 4, the cavity 1 can be divided into three chambers, and the resonant column 402 is arranged in each chamber to further enhance the use effect. Embodiment

[0037] Reference Figures 1-9 A general band-stop filter structure, comprising a cavity 1, characterized in that two rib plates 4 are arranged in the cavity 1, and the two rib plates 4 divide the cavity 1 into three chambers; the two side walls of the cavity 1 are respectively fixedly connected with an input joint 2 and an output joint 3, and a band-stop transmission copper rod 5 is connected to the rib plate 4, and the two ends of the band-stop transmission copper rod 5 correspond to the input joint 2 and the output joint 3 respectively; a resonant column 402 is connected in each chamber, and a fixing table 404 is arranged on the resonant column 402, and a coupling copper sheet 405 is connected to the fixing table 404, and the distance between the coupling copper sheet 405 and the band-stop transmission copper rod 5 is adjustable; further, an input fixing plate 201 is connected to the input joint 2, and an input fixing screw 202 is arranged on the input fixing plate 201, and one end of the input fixing screw 202 penetrates through the input fixing plate 201 and is threadedly connected with the outer wall of the cavity 1.

[0038] An output fixing plate 301 is connected to the output joint 3, an output fixing screw 302 is arranged on the output fixing plate 301, and one end of the output fixing screw 302 penetrates through the output fixing plate 301 and is threadedly connected with the outer wall of the cavity 1.

[0039] In this embodiment, before use, first, the input fixing plate 201 is attached to one side of the outer wall of the cavity 1, and then the input fixing plate 201 is fixedly connected to the cavity 1 by the input fixing screw 202, thereby completing the installation of the input connector 2, then the output fixing plate 301 is attached to the other side of the outer wall of the cavity 1, and the input fixing plate 301 is fixedly installed on the other side of the outer wall of the cavity 1 by the output fixing screw 302, thereby completing the installation of the output connector 3, and the input connector 2 and the output connector 3 can be more conveniently installed and disassembled by the input fixing screw 202 and the output fixing screw 302, the external input signal can be received by the input connector 2 and fed into the cavity 1 of the filter for processing, and the signal processed by the filter can be guided out by the output connector 3 for subsequent use.

[0040] The cavity 1 is provided with a circular hole 108 on both sides, and the input connector 2 and the output connector 3 are connected in the circular holes 108 on both sides of the cavity 1, the input connector 2 is provided with an input core rod 203, and the output connector 3 is provided with an output core rod 303, and the input core rod 203 and the output core rod 303 pass through the circular holes 108 on both sides of the cavity 1 and are placed in the cavity 1.

[0041] The band-stop transmission copper rod 5 is provided with a first connecting hole 503 and a second connecting hole 504 at both ends, one end of the input core rod 203 placed in the cavity 1 is inserted into the first connecting hole 503, and one end of the output core rod 303 placed in the cavity 1 is inserted into the second connecting hole 504.

[0042] In this embodiment, the circular hole 108 is provided to facilitate the installation and fixation of the input connector 2 and the output connector 3, and in use, the input core rod 203 is inserted into the first connecting hole 503 on the left side of the band-stop transmission copper rod 5, and the output core rod 303 is inserted into the second connecting hole 504 on the band-stop transmission copper rod 5, so that the input core rod 203 and the output core rod 303 are connected with the band-stop transmission copper rod 5, facilitating the transmission of signals, thereby ensuring the normal use of the filter.

[0043] The rib plate 4 is provided with a U-shaped groove 401, the outer wall of the band-stop transmission copper rod 5 is provided with a support disc 501, the support disc 501 is arranged in the U-shaped groove 401, and the support disc 501 is fixedly connected with support plates 502 on both sides.

[0044] The support disc 501 and the support plate 502 are clamped in the U-shaped groove 401, which can fix the position of the band-stop transmission copper rod 5, so that the connection is more stable and can be more conveniently used in cooperation with the coupling copper sheet 405. Embodiment

[0045] Reference Figures 1-9The utility model provides a general type band elimination filter structure, including cavity 1, its characterized in be equipped with two rib plate 4 in cavity 1, two rib plate 4 will cavity 1 be divided into three chambers, the both sides wall of cavity 1 is fixedly connected with input joint 2 and output joint 3 respectively, and the rib plate 4 is connected with band elimination transmission copper bar 5, and the both ends of band elimination transmission copper bar 5 correspond with input joint 2 and output joint 3 respectively, and each chamber is connected with resonant column 402, and resonant column 402 is equipped with fixed platform 404, and fixed platform 404 is connected with coupling copper sheet 405, and the distance between coupling copper sheet 405 and band elimination transmission copper bar 5 is adjustable, and further, resonant column 402 is equipped with recess 403, and fixed platform 404 is threadedly connected with copper sheet fixing screw 406, and coupling copper sheet 405 is fixedly connected on fixed platform 404 through copper sheet fixing screw 406.

[0046] In the embodiment, the fixed platform 404 is arranged to facilitate the placement of the coupling copper sheet 405, and the copper sheet fixing screw 406 is arranged to fix the adjusted coupling copper sheet 405, thereby avoiding the shaking or falling of the coupling copper sheet 405 during use and affecting the use effect.

[0047] The cavity 1 is provided with a cover plate 101, the cover plate 101 is provided with a locking screw 102, the cavity 1 and the rib plate 4 are both provided with mounting holes 107, and the bottom of the locking screw 102 passes through the cover plate 101 and is threadedly connected in the mounting hole 107.

[0048] The cover plate 101 is placed on the cavity 1, and then fixed by the locking screw 102, so that the connection of the cover plate 101 is more stable, the filter cavity 1 is sealed, the transmission effect is guaranteed, and the mounting hole 107 and the locking screw 102 are also arranged on the rib plate 4, so that the fixing effect is better.

[0049] The cover plate 101 is provided with a first tuning screw 103, the top of the first tuning screw 103 is threadedly connected with a first tuning nut 104, the first tuning nut 104 abuts against the top outer wall of the cover plate 101, the first tuning screw 103 is provided with a plurality of, and the bottoms of the plurality of first tuning screws 103 are respectively inserted into the recesses 403 on the plurality of resonant columns 402.

[0050] The resonant column 402 can be set to achieve resonance to specific frequencies, and energy can be stored and released at the resonant frequency. The first tuning screw 103 is arranged on the cover plate 101. Specifically, the position of the first tuning screw 103 on the cover plate 101 is adjusted, the depth of the bottom of the first tuning screw 103 inserted into the recess hole 403 of the resonant column 402 is adjusted, and then the first tuning nut 104 is fixed. The depth of the first tuning screw 103 inserted into the recess hole 403 can be adjusted, and the resonant frequency of the filter can be finely adjusted. By changing the insertion depth of the resonant rod, the frequency response of the filter can be accurately controlled, and the input and output impedance of the filter can also be affected, thereby optimizing the performance of the filter.

[0051] In actual use, the change of the insertion depth of the first tuning screw 103 changes the effective length of the resonant column 402, thereby adjusting the resonant frequency of the filter. The deeper the insertion, the lower the resonant frequency. The shallower the insertion, the higher the resonant frequency. When the insertion depth is moderate, the bandwidth is narrow and the frequency selectivity is good. When the insertion depth is too deep or too shallow, the bandwidth may be widened and the frequency selectivity may be reduced.

[0052] The second tuning screw 105 is also arranged on the cover plate 101. The top of the second tuning screw 105 is threadedly connected with the second tuning nut 106, the second tuning nut 106 abuts against the top outer wall of the cover plate 101, and the bottom of the second tuning screw 105 is arranged in the cavity 1. The end of the second tuning screw 105 arranged in the cavity 1 is arranged above the coupling copper sheet 405.

[0053] The second tuning screw 105 affects the impedance characteristics of the filter, and the depth of the second tuning screw 105 inserted into the cavity 1 can be adjusted. After adjustment, the second tuning nut 106 is fixed, thereby fixing the position of the second tuning screw 105. Furthermore, the second tuning screw 105 is arranged above the coupling copper sheet 405, so that the frequency response of the filter can be more accurately adjusted. By finely adjusting the position of the second tuning screw 105, the resonant frequency of the filter can be accurately controlled. The coupling copper sheet 405 is usually used to adjust the coupling strength between the filter cavities 1. The second tuning screw 105 arranged above the coupling copper sheet 405 can further optimize the coupling effect, provide more flexible tuning options, and the layout makes the second tuning screw 105 and the coupling copper sheet 405 more compact in space, which is helpful to realize the miniaturized design of the filter.

[0054] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent substitutions or changes to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A general-purpose band-stop filter structure comprising a cavity (1), characterized in that, Two rib plates (4) are arranged in the cavity (1), and the two rib plates (4) divide the cavity (1) into three chambers. Two side walls of the cavity (1) are fixedly connected with an input connector (2) and an output connector (3) respectively, a band-stop transmission copper rod (5) is connected to the rib plate (4), and two ends of the band-stop transmission copper rod (5) correspond to the input connector (2) and the output connector (3) respectively. A resonant column (402) is connected to each chamber, a fixing table (404) is arranged on the resonant column (402), a coupling copper sheet (405) is connected to the fixing table (404), and the distance between the coupling copper sheet (405) and the band-stop transmission copper rod (5) is adjustable.

2. A general band reject filter structure according to claim 1, characterized in that An input fixing plate (201) is connected to the input connector (2), an input fixing screw (202) is arranged on the input fixing plate (201), and one end of the input fixing screw (202) penetrates through the input fixing plate (201) and is threadedly connected to the outer wall of the cavity (1).

3. A general band reject filter structure according to claim 2, characterized in that An output fixing plate (301) is connected to the output connector (3), an output fixing screw (302) is arranged on the output fixing plate (301), and one end of the output fixing screw (302) penetrates through the output fixing plate (301) and is threadedly connected to the outer wall of the cavity (1).

4. A general band reject filter structure according to claim 3, characterized in that Round holes (108) are arranged on both sides of the cavity (1), the input connector (2) and the output connector (3) are connected to the round holes (108) on the two sides of the cavity (1), an input core rod (203) is arranged on the input connector (2), an output core rod (303) is arranged on the output connector (3), and the input core rod (203) and the output core rod (303) penetrate through the round holes (108) on the two sides of the cavity (1) and are arranged in the cavity (1).

5. A general band reject filter structure according to claim 4, characterized in that First and second connecting holes (503) and (504) are arranged at two ends of the band-stop transmission copper rod (5), one end of the input core rod (203) arranged in the cavity (1) is inserted into the first connecting hole (503), and one end of the output core rod (303) arranged in the cavity (1) is inserted into the second connecting hole (504).

6. A general band reject filter structure according to claim 5, characterized in that A U-shaped groove (401) is arranged on the rib plate (4), a supporting disc (501) is arranged on the outer wall of the band-stop transmission copper rod (5), the supporting disc (501) is arranged in the U-shaped groove (401), and supporting plates (502) are fixedly connected to the two sides of the supporting disc (501) and are attached to the outer walls of the two sides of the rib plate (4) respectively.

7. The general band reject filter structure of claim 1, wherein, A recess (403) is arranged on the resonant column (402), a copper sheet fixing screw (406) is threadedly connected to the fixing table (404), and the coupling copper sheet (405) is fixedly connected to the fixing table (404) through the copper sheet fixing screw (406).

8. A general band reject filter structure according to claim 7, characterized in that A cover plate (101) is arranged on the cavity (1), a locking screw (102) is arranged on the cover plate (101), mounting holes (107) are arranged on the cavity (1) and the rib plate (4), and the bottom of the locking screw (102) penetrates through the cover plate (101) and is threadedly connected to the mounting hole (107).

9. A general band reject filter structure according to claim 8, characterized in that The cover plate (101) is provided with first tuning screws (103), the top of the first tuning screw (103) is threadedly connected with a first tuning nut (104), the first tuning nut (104) abuts against the top outer wall of the cover plate (101), and the first tuning screw (103) is provided with a plurality of first tuning screws (103), the bottoms of the plurality of first tuning screws (103) are respectively inserted into the concave holes (403) on the plurality of resonance columns (402).

10. A general band reject filter structure according to claim 9, characterized in that The cover plate (101) is further provided with second tuning screws (105), the top of the second tuning screw (105) is threadedly connected with a second tuning nut (106), the second tuning nut (106) abuts against the top outer wall of the cover plate (101), the bottom of the second tuning screw (105) is arranged in the cavity (1), and one end of the second tuning screw (105) arranged in the cavity (1) is arranged above the coupling copper sheet (405).

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