High-pass and low-pass duplexer

Abstract

The utility model discloses a high-pass and low-pass duplexer, and belongs to the field of filters. A high-pass and low-pass duplexer comprises a shell and a cavity arranged in the shell, and the cavity is provided with a long groove. The low-pass assembly is vertically arranged in the cavity; the input connector is arranged on the side face of the shell, and the input connector is matched with the top end of the low-pass assembly; the bottom end output connector is arranged at the bottom of the shell, and the bottom end output connector is matched with the bottom of the low-pass assembly; the interdigital structure is arranged in the long groove, the interdigital structure comprises an upper partition plate and a lower partition plate, the upper partition plate is fixedly arranged on the inner wall of the top of the long groove, the lower partition plate is fixedly arranged on the inner wall of the bottom of the long groove, and a bent channel is formed between the upper partition plate and the lower partition plate; the high-end output connector is arranged at the top of the shell; according to the utility model, the disadvantage that strong coupling is difficult to realize in the design of a broadband combiner is solved, and a relatively wide passband can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field especially relates to a high pass low pass duplexer. BACKGROUND

[0002] A filter is an electronic circuit or system that processes signals, allowing certain frequencies to pass through while suppressing or reducing others. Filters are widely used in fields such as electronic engineering, signal processing, communication, and audio systems to improve signal quality, remove noise or interference. In modern electronic systems, filters play an important role, and their design and implementation depend on specific application requirements and performance demands. A wideband combiner is a device that combines signals from multiple sources into one output, typically used in radio frequency (RF) and microwave applications. Its design allows signals from multiple frequency ranges to be effectively combined without interfering with each other. Wideband combiners can operate over a wide frequency range, hence the name "wideband".

[0003] In the design of a wideband combiner, due to the relatively wide passband, it is difficult to achieve port coupling using conventional designs. Therefore, this application changes the conventional cavity filter scheme and proposes a high pass low pass duplexer that is relatively easy to control in terms of product specifications, does not require tuning, has a small size, high consistency, relatively low processing and batch costs, and is easy to control. SUMMARY

[0004] The utility model discloses a high pass low pass duplexer to solve the problem of difficult port coupling in conventional designs in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A high pass low pass duplexer includes a housing and further includes:

[0007] A cavity is arranged inside the housing, and a long slot is provided on the cavity;

[0008] A low pass assembly is vertically arranged in the cavity;

[0009] An input connector is arranged on the side of the housing, and the input connector cooperates with the top end of the low pass assembly;

[0010] A bottom output connector is arranged at the bottom of the housing, and the bottom output connector cooperates with the bottom of the low pass assembly;

[0011] An interdigital structure is arranged in the long slot, the interdigital structure includes an upper partition and a lower partition, the upper partition is fixedly arranged on the top inner wall of the long slot, the lower partition is fixedly arranged on the bottom inner wall of the long slot, and a curved channel is formed between the upper partition and the lower partition.

[0012] The high-end output connector is located at the top of the housing;

[0013] One end of the interdigitated structure mates with the low-pass component, and the high-end output connector is located at the end of the interdigitated structure away from the low-pass component.

[0014] Preferably, there are multiple upper and lower partitions, which are staggered and interleaved. There are gaps between the upper partition and the bottom inner wall of the long groove, and between the lower partition and the top inner wall of the long groove.

[0015] Furthermore, the bottom output connector is provided with a bottom output fixing plate, the bottom output fixing plate is provided with a bottom output fixing screw, the bottom output fixing screw passes through the bottom output fixing plate and is threadedly connected to the housing, and the bottom output connector is also provided with a bottom output plug rod and a bottom output core rod.

[0016] Furthermore, the bottom of the low-pass component is provided with a connecting rod, the connecting rod is provided with a socket, the bottom output core rod is inserted into the socket, and the connecting rod is also provided with a through hole that communicates with the socket.

[0017] Furthermore, the cavity is provided with a sleeve, the low-pass component is disposed inside the sleeve, and the low-pass component abuts against the inner wall of the sleeve.

[0018] Furthermore, an input fixing plate is fixedly connected to the input connector, and an input fixing screw is provided on the input fixing plate. The input fixing screw passes through the input fixing plate and is threadedly connected to the housing. The input connector is provided with an input plug rod and an input core rod.

[0019] Furthermore, the top of the low-pass component is provided with a thin rod, the input core rod corresponds to the thin rod, the cavity is provided with a vertical groove, and the thin rod is placed in the vertical groove.

[0020] Furthermore, a high-end output fixing plate is fixedly connected to the high-end output connector, and a high-end output fixing screw is connected to the high-end output fixing plate. One end of the high-end output fixing screw passes through the high-end output fixing plate and is threadedly connected to the housing.

[0021] Furthermore, the high-end output connector is provided with a high-end output plug rod and a high-end output core rod. The bottom of the high-end output core rod is inserted into a long slot, and the high-end output core rod corresponds to the end of the interdigitated structure away from the low-pass component.

[0022] Preferably, the cavity is provided with a first mounting hole, and a cover plate is connected to the front and side of the cavity. The cover plate is provided with a locking screw, which passes through the cover plate and is threadedly connected to the cavity. The housing is provided with a second mounting hole.

[0023] Compared with the prior art, this utility model provides a high-pass low-pass duplexer, which has the following beneficial effects:

[0024] 1. This high-pass and low-pass duplexer, after the signal is input into the filter, can be either transmitted downwards through the low-pass component and then discharged through the bottom output connector, or, after inputting through the input connector, enter the interdigital structure, flow through the staggered upper and lower baffles in a curved channel, and then be discharged through the high-end output connector. This transforms the conventional combiner design into an interdigital structure with a low-pass component, eliminating unnecessary low-frequency components or low-frequency interference in the signal. When used with the low-pass component, it solves the problem of difficulty in achieving strong coupling in broadband combiner design, enabling a wider passband.

[0025] 2. In this high-pass and low-pass duplexer, when the signal passes through the interdigital structure, it first passes through the gap between the upper partition and the long slot, then through the curved channel between the upper and lower partitions, and then flows through the gap between the lower partition and the top inner wall of the long slot. This cyclical flow increases the signal flow time, which can remove unnecessary low-frequency components or low-frequency interference from the signal, thereby improving the signal accuracy. It solves the drawback of difficulty in achieving strong coupling in broadband combiner design and can achieve a relatively wide passband. Attached Figure Description

[0026] Figure 1 This is a front view of a high-pass low-pass duplexer proposed in this utility model;

[0027] Figure 2 This is a three-dimensional structural diagram of a high-pass low-pass duplexer proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the bottom structure of a high-pass low-pass duplexer proposed in this utility model;

[0029] Figure 4 This is a front sectional view of a high-pass low-pass duplexer proposed in this utility model;

[0030] Figure 5 This utility model proposes a high-pass low-pass duplexer. Figure 4 Enlarged view of section A;

[0031] Figure 6 This utility model proposes a high-pass low-pass duplexer. Figure 4Enlarged view of section B;

[0032] Figure 7 This utility model proposes a high-pass low-pass duplexer. Figure 4 Enlarged view of section C;

[0033] Figure 8 This is a three-dimensional structural diagram showing a cross-section of a high-pass low-pass duplexer proposed in this utility model.

[0034] Figure 9 This is a schematic diagram of the low-pass component in a high-pass low-pass duplexer proposed in this utility model;

[0035] Figure 10 This is a schematic diagram of a high-pass low-pass duplexer containing a cover plate, as proposed in this utility model.

[0036] In the diagram: 1. Housing; 101. Cavity; 102. Long slot; 103. First mounting hole; 104. Second mounting hole; 105. Vertical slot; 106. Upper partition; 107. Lower partition; 108. Curved channel; 109. Cover plate; 110. Locking screw; 2. Input connector; 201. Input fixing plate; 202. Input fixing screw; 203. Input insertion rod; 204. Input core rod; 3. High-end output connector; 01. High-end output mounting plate; 302. High-end output mounting screw; 303. High-end output connector rod; 304. High-end output core rod; 4. Bottom output connector; 401. Bottom output mounting plate; 402. Bottom output mounting screw; 403. Bottom output connector rod; 404. Bottom output core rod; 5. Sleeve; 501. Low-pass assembly; 502. Thin rod; 503. Connecting rod; 504. Socket; 505. Through hole. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0038] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0039] Reference Figures 1-10A high-pass and low-pass duplexer includes a housing 1 and a cavity 101 disposed inside the housing 1, the cavity 101 having an elongated slot 102; a vertically placed low-pass component 501 is disposed inside the cavity 101; an input connector 2 is disposed on the side of the housing 1, and the input connector 2 mates with the top end of the low-pass component 501; a bottom output connector 4 is disposed at the bottom of the housing 1, and the bottom output connector 4 mates with the bottom of the low-pass component 501; it also includes an interdigitated structure, providing... Within the long slot 102, the interdigitated structure includes an upper partition 106 and a lower partition 107. The upper partition 106 is fixedly disposed on the top inner wall of the long slot 102, and the lower partition 107 is fixedly disposed on the bottom inner wall of the long slot 102. A curved channel 108 is formed between the upper partition 106 and the lower partition 107. A high-end output connector 3 is provided on the top of the housing 1. One end of the interdigitated structure is engaged with the low-pass component 501. The high-end output connector 3 is disposed at the end of the interdigitated structure away from the low-pass component 501.

[0040] In this embodiment, during use, the input connector 2, the bottom output connector 4, and the high-end output connector 3 are first connected to the housing 1. Then, signals can be transmitted into the cavity 101 through the input connector 2, and signals can be output through the bottom output connector 4 and the high-end output connector 3. After the signal is transmitted into the filter through the input connector 2, it can be transmitted downward through the low-pass component 501 and then discharged through the bottom output connector 4. On the other hand, after the signal is input through the input connector 2, it will enter the interdigitated structure, and then flow through the staggered upper partition 106 and lower partition 107, through the curved channel 108, and then through the high-end output... The signal is discharged through connector 3. This design modifies the conventional combiner design by adding an interdigital structure and a low-pass component 501. The interdigital structure constitutes a high-pass filter, which is also known as a low-cutoff filter or low-impedance filter. It allows frequencies above a certain cutoff frequency to pass through while greatly attenuating lower frequencies. It removes unnecessary low-frequency components or low-frequency interference from the signal. The low-pass component 501 constitutes a low-pass filter. A low-pass filter is an electronic filter that allows signals below the cutoff frequency to pass through but prevents signals above the cutoff frequency from passing through. This solves the problem of difficulty in achieving strong coupling in broadband combiner design and can achieve a relatively wide passband. Example

[0041] Reference Figures 1-10A high-pass and low-pass duplexer includes a housing 1 and a cavity 101 disposed inside the housing 1, the cavity 101 having an elongated slot 102; a vertically placed low-pass component 501 is disposed inside the cavity 101; an input connector 2 is disposed on the side of the housing 1, and the input connector 2 mates with the top end of the low-pass component 501; a bottom output connector 4 is disposed at the bottom of the housing 1, and the bottom output connector 4 mates with the bottom of the low-pass component 501; it also includes an interdigitated structure, providing... Within the long slot 102, the interdigitated structure includes an upper partition 106 and a lower partition 107. The upper partition 106 is fixedly disposed on the top inner wall of the long slot 102, and the lower partition 107 is fixedly disposed on the bottom inner wall of the long slot 102. A curved channel 108 is formed between the upper partition 106 and the lower partition 107. A high-end output connector 3 is provided on the top of the housing 1. One end of the interdigitated structure is engaged with the low-pass component 501. The high-end output connector 3 is disposed at the end of the interdigitated structure away from the low-pass component 501.

[0042] Reference Figures 1-6 and Figure 8 Multiple upper partitions 106 and lower partitions 107 are provided, and the multiple upper partitions 106 and lower partitions 107 are arranged alternately. There are gaps between the upper partition 106 and the bottom inner wall of the long groove 102 and between the lower partition 107 and the top inner wall of the long groove 102.

[0043] In this embodiment, after the signal passes through the input connector 2, it enters the interdigital structure. First, it flows through the gap between the upper partition 106 and the long slot 102, then through the curved channel 108 between the upper partition 106 and the lower partition 107, and then through the gap between the lower partition 107 and the top inner wall of the long slot 102. This cyclical flow increases the signal flow time, and then the signal is discharged through the high-end output connector 3. This removes unnecessary low-frequency components or low-frequency interference from the signal, thereby improving the signal accuracy. It solves the problem of difficulty in achieving strong coupling in broadband combiner design and can achieve a relatively wide passband.

[0044] Reference Figures 1-4 , Figure 7 , Figure 8 and Figure 10 The bottom output connector 4 is provided with a bottom output fixing plate 401, and a bottom output fixing screw 402 is provided on the bottom output fixing plate 401. The bottom output fixing screw 402 passes through the bottom output fixing plate 401 and is threadedly connected to the housing 1. The bottom output connector 4 is also provided with a bottom output plug rod 403 and a bottom output core rod 404.

[0045] The bottom output fixing plate 401 and bottom output fixing screw 402 make it easy to fix the bottom output connector 4 to the housing 1, making it easier to use. The bottom output plug rod 403 makes it easy to connect external devices. The bottom output core rod 404 can be used in conjunction with the low-pass component 501.

[0046] Reference Figures 1-4 , Figures 7-10 The bottom of the low-pass component 501 is provided with a connecting rod 503, and the connecting rod 503 is provided with a socket 504. The bottom output core rod 404 is inserted into the socket 504. The connecting rod 503 is also provided with a through hole 505 that communicates with the socket 504.

[0047] Reference Figures 1-4 , Figures 7-10 The cavity 101 is provided with a sleeve 5, and the low-pass component 501 is disposed inside the sleeve 5, and the low-pass component 501 abuts against the inner wall of the sleeve 5.

[0048] Specifically, during use, the bottom output core 404 is inserted into the socket 504 to facilitate signal transmission. Secondly, the connecting rod 503 is provided to facilitate the connection of the bottom output core 404.

[0049] Reference Figures 1-10 An input fixing plate 201 is fixedly connected to the input connector 2. An input fixing screw 202 is provided on the input fixing plate 201. The input fixing screw 202 passes through the input fixing plate 201 and is threadedly connected to the housing 1. An input plug rod 203 and an input core rod 204 are provided on the input connector 2.

[0050] Reference Figures 1-4 , Figures 7-10 The top of the low-pass component 501 is provided with a thin rod 502, the input core rod 204 corresponds to the thin rod 502, and the cavity 101 is provided with a vertical groove 105, in which the thin rod 502 is placed.

[0051] In this embodiment, during use, the input fixing plate 201 is attached to the side of the housing 1, and then the input fixing plate 201 is fixedly connected to the housing 1 by the input fixing screw 202. The input plug rod 203 makes it easy to connect the input connector 2 to external devices. Secondly, the input core rod 204 corresponds to the thin rod 502 on the top of the low-pass component 501 to facilitate signal transmission. The vertical slot 105 is provided to facilitate the placement of the thin rod 502.

[0052] Reference Figures 1-4 , Figures 6-10A high-end output fixing plate 301 is fixedly connected to the high-end output connector 3. A high-end output fixing screw 302 is connected to the high-end output fixing plate 301. One end of the high-end output fixing screw 302 passes through the high-end output fixing plate 301 and is threadedly connected to the housing 1.

[0053] Reference Figures 1-4 , Figures 7-10 The high-end output connector 3 is provided with a high-end output plug rod 303 and a high-end output core rod 304. The bottom of the high-end output core rod 304 is inserted into the long slot 102, and the high-end output core rod 304 corresponds to the end of the interdigitated structure that is away from the low-pass component 501.

[0054] The high-end output connector 3 can be fixedly connected to the housing 1 by the high-end output fixing plate 301 and the high-end output fixing screw 302, which makes it easier to use. Secondly, the high-end output plug rod 303 can facilitate the connection of external devices. The high-end output core rod 304 corresponds to the interdigital structure, which can facilitate the transmission of signals and make the signals passing through the interdigital structure easy to be discharged through the high-end output connector 3.

[0055] Reference Figures 1-10 The cavity 101 is provided with a first mounting hole 103. Cover plates 109 are connected to the front and side of the cavity 101. Locking screws 110 are provided on the cover plates 109. The locking screws 110 pass through the cover plates 109 and are threadedly connected to the cavity 101. The housing 1 is provided with a second mounting hole 104.

[0056] In this utility model, during use, cover plates 109 are connected to both the front and back of the cavity 101. Locking screws 110 are installed on the cover plates 109 and threadedly connected to the first mounting hole 103 on the cavity 101, thereby fixing the cover plates 109. The cover plates 109 can block the long groove 102 and the vertical groove 105, thereby ensuring the use effect of the internal structure. Secondly, plates can also be connected to the shell 1 to block the shell 1. By connecting screws in the second mounting hole 104, the plates can be fixed for easy use.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-pass low-pass duplexer, comprising a housing (1), characterized in that, Also includes: A cavity (101) is provided inside the housing (1), and a long groove (102) is provided on the cavity (101). A low-pass component (501) is vertically disposed inside the cavity (101); An input connector (2) is disposed on the side of the housing (1), and the input connector (2) is engaged with the top of the low-pass assembly (501); The bottom output connector (4) is located at the bottom of the housing (1), and the bottom output connector (4) is matched with the bottom of the low-pass component (501); An interdigitated structure is provided in a long groove (102). The interdigitated structure includes an upper partition (106) and a lower partition (107). The upper partition (106) is fixedly provided on the top inner wall of the long groove (102), and the lower partition (107) is fixedly provided on the bottom inner wall of the long groove (102). A curved channel (108) is formed between the upper partition (106) and the lower partition (107). The high-end output connector (3) is located on the top of the housing (1); One end of the interdigitated structure is engaged with the low-pass component (501), and the high-end output connector (3) is located at the end of the interdigitated structure away from the low-pass component (501).

2. A high-pass low-pass duplexer according to claim 1, characterized in that, Multiple upper partitions (106) and lower partitions (107) are provided, and the multiple upper partitions (106) and lower partitions (107) are arranged alternately. There are gaps between the upper partition (106) and the bottom inner wall of the long groove (102) and between the lower partition (107) and the top inner wall of the long groove (102).

3. A high-pass low-pass duplexer according to claim 2, characterized in that, The bottom output connector (4) is provided with a bottom output fixing plate (401), and the bottom output fixing plate (401) is provided with a bottom output fixing screw (402). The bottom output fixing screw (402) passes through the bottom output fixing plate (401) and is threadedly connected to the housing (1). The bottom output connector (4) is also provided with a bottom output plug rod (403) and a bottom output core rod (404).

4. A high-pass low-pass duplexer according to claim 3, characterized in that, The low-pass component (501) has a connecting rod (503) at its bottom, and a socket (504) is provided inside the connecting rod (503). The bottom output core rod (404) is inserted into the socket (504). The connecting rod (503) also has a through hole (505) that communicates with the socket (504).

5. A high-pass low-pass duplexer according to claim 4, characterized in that, The cavity (101) is provided with a sleeve (5), and the low-pass component (501) is disposed inside the sleeve (5), and the low-pass component (501) abuts against the inner wall of the sleeve (5).

6. A high-pass low-pass duplexer according to claim 5, characterized in that, An input fixing plate (201) is fixedly connected to the input connector (2). An input fixing screw (202) is provided on the input fixing plate (201). The input fixing screw (202) passes through the input fixing plate (201) and is threadedly connected to the housing (1). An input plug rod (203) and an input core rod (204) are provided on the input connector (2).

7. A high-pass low-pass duplexer according to claim 6, characterized in that, The top of the low-pass component (501) is provided with a thin rod (502), the input core rod (204) corresponds to the thin rod (502), the cavity (101) is provided with a vertical groove (105), and the thin rod (502) is placed in the vertical groove (105).

8. A high-pass low-pass duplexer according to claim 7, characterized in that, A high-end output fixing plate (301) is fixedly connected to the high-end output connector (3), and a high-end output fixing screw (302) is connected to the high-end output fixing plate (301). One end of the high-end output fixing screw (302) passes through the high-end output fixing plate (301) and is threadedly connected to the housing (1).

9. A high-pass low-pass duplexer according to claim 8, characterized in that, The high-end output connector (3) is provided with a high-end output plug rod (303) and a high-end output core rod (304). The bottom of the high-end output core rod (304) is inserted into the long slot (102), and the high-end output core rod (304) corresponds to the end of the interdigitated structure away from the low-pass component (501).

10. A high-pass low-pass duplexer according to claim 1, characterized in that, The cavity (101) is provided with a first mounting hole (103). The front and side of the cavity (101) are connected with cover plates (109). The cover plates (109) are provided with locking screws (110). The locking screws (110) pass through the cover plates (109) and are threadedly connected to the cavity (101). The housing (1) is provided with a second mounting hole (104).

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