High-pass and low-pass duplexer

Abstract

The invention 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 broadband combiner, the defect that strong coupling is difficult to realize in the design of the broadband combiner is overcome, and a relatively wide passband can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and in particular to a high-pass and low-pass duplexer. Background Art

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

[0003] In the design of broadband combiners, due to the relatively wide passband, port coupling is difficult to achieve if a conventional design is used. Therefore, the present application changes the conventional cavity filter scheme; proposes a high-pass and low-pass duplexer that is relatively easy to control product indicators, does not require tuning, has a small size, high consistency, and has relatively low processing and batch costs and is easy to control. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that conventional design port coupling in the prior art is difficult to achieve, and to propose a high-pass and low-pass duplexer.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A high-pass and low-pass duplexer comprises a housing and further comprises: A cavity is arranged inside the shell, and a long groove is provided on the cavity; A low-pass component is vertically arranged in the cavity; An input connector is arranged on the side of the housing and matches with the top end of the low-pass component; A bottom output connector is arranged at the bottom of the housing, and the bottom output connector matches the bottom of the low-pass component; An interdigital structure is arranged in the long slot, the interdigital structure comprises 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; A high-end output connector is arranged on the top of the housing; One end of the interdigital structure cooperates with the low-pass component, and the high-end output connector is arranged at the end of the interdigital structure away from the low-pass component.

[0006] Preferably, a plurality of the upper partitions and the lower partitions are provided, and the plurality of the upper partitions and the lower partitions are arranged alternately with each other, and a gap is provided 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.

[0007] 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 threadably connected to the shell, and the bottom output connector is also provided with a bottom output plug-in rod and a bottom output core rod.

[0008] Furthermore, a connecting rod is provided at the bottom of the low-pass component, a socket is provided in the connecting rod, the bottom output core rod is inserted in the socket, and a through hole connected to the socket is also provided on the connecting rod.

[0009] Furthermore, a sleeve is provided in the cavity, the low-pass component is arranged in the sleeve, and the low-pass component abuts against the inner wall of the sleeve.

[0010] Furthermore, the input connector is fixedly connected to an input fixing plate, the input fixing plate is provided with an input fixing screw, the input fixing screw passes through the input fixing plate and is threadably connected to the shell, and the input connector is provided with an input plug rod and an input core rod.

[0011] Furthermore, a thin rod is provided on the top of the low-pass component, the input core rod corresponds to the thin rod, a vertical groove is provided on the cavity, and the thin rod is placed in the vertical groove.

[0012] Furthermore, the high-end output connector is fixedly connected to a high-end output fixing plate, the high-end output fixing plate is connected to a high-end output fixing screw, and the high-end output fixing screw passes through one end of the high-end output fixing plate and is threadedly connected to the shell.

[0013] 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 in the long groove, and the high-end output core rod corresponds to the end of the interdigital structure away from the low-pass component.

[0014] Preferably, the cavity is provided with a first mounting hole, the front and side surfaces of the cavity are connected with a cover plate, the cover plate is provided with a locking screw, the locking screw passes through the cover plate and is threadedly connected to the cavity, and the shell is provided with a second mounting hole.

[0015] Compared with the prior art, the present invention provides a high-pass and low-pass duplexer, which has the following beneficial effects: 1. For the high-pass low-pass duplexer, after the signal is transmitted into the filter through the input connector, on the one hand, it can be transmitted downward through the low-pass component and then discharged through the bottom output connector. On the other hand, after the signal is input through the input connector, it will enter the interdigital structure, and then flow through the staggered upper and lower baffles, from the curved channel, and then be discharged through the high-end output connector. The conventional combiner design is changed to the form of an interdigital structure plus a low-pass component, which removes unnecessary low-frequency components in the signal or removes low-frequency interference; when used with the low-pass component, it solves the disadvantage of difficulty in achieving strong coupling in the design of broadband combiners, and can achieve a relatively wide passband.

[0016] 2. When the signal passes through the interdigital structure of the high-pass and low-pass duplexer, it first passes through the gap between the upper partition and the long slot, then passes through the curved channel between the upper partition and the lower partition, and again flows through the gap between the lower partition and the top inner wall of the long slot. Such a circular flow increases the signal flow time, can remove unnecessary low-frequency components in the signal or remove low-frequency interference, thereby improving the accuracy of the signal, solving the problem that it is difficult to achieve strong coupling in the design of broadband combiners, and can achieve a relatively wide passband. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A front view of a high-pass and low-pass duplexer proposed by the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a high-pass and low-pass duplexer proposed by the present invention; Figure 3 A schematic diagram of the structure of the bottom of a high-pass and low-pass duplexer proposed by the present invention; Figure 4 A cross-sectional view of a high-pass and low-pass duplexer provided by the present invention; Figure 5 A high-pass and low-pass duplexer proposed by the present invention Figure 4 A magnified view of part A; Figure 6 A high-pass and low-pass duplexer proposed by the present invention Figure 4 A magnified view of part B; Figure 7 A high-pass and low-pass duplexer proposed by the present invention Figure 4 Enlarged view of part C; Figure 8 A schematic diagram of a three-dimensional structure of a high-pass and low-pass duplexer proposed by the present invention; Fig. 9 A schematic diagram of the structure of a low-pass component in a high-pass low-pass duplexer proposed by the present invention; Fig.10 The present invention provides a schematic structural diagram of a high-pass and low-pass duplexer including a cover plate.

[0018] In the figure: 1, shell; 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; 110, locking screw; 2, input connector; 201, input fixing plate; 202, input fixing screw; 203, input plug rod; 204, input core rod; 3, high-end output connector; 3 01, high-end output fixing plate; 302, high-end output fixing screw; 303, high-end output plug-in rod; 304, high-end output core rod; 4, bottom output connector; 401, bottom output fixing plate; 402, bottom output fixing screw; 403, bottom output plug-in rod; 404, bottom output core rod; 5, sleeve; 501, low-pass component; 502, thin rod; 503, connecting rod; 504, jack; 505, through hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0021] Reference Figure 1-Figure 10 A high-pass low-pass duplexer includes a housing 1, a cavity 101 disposed inside the housing 1, a long slot 102 disposed on the cavity 101; a vertically placed low-pass component 501 is disposed in the cavity 101, an input connector 2 is disposed on the side of the housing 1, and the input connector 2 matches with the top 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 matches with the bottom of the low-pass component 501; and an interdigital structure is provided, In the long groove 102, the interdigital structure includes an upper partition 106 and a lower partition 107. The upper partition 106 is fixedly arranged on the top inner wall of the long groove 102, and the lower partition 107 is fixedly arranged 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. A high-end output connector 3 is provided on the top of the shell 1. One end of the interdigital structure cooperates with the low-pass component 501, and the high-end output connector 3 is arranged at the end of the interdigital structure away from the low-pass component 501.

[0022] In this embodiment, when in use, the input connector 2, the bottom output connector 4 and the high-end output connector 3 are first connected to the housing 1 respectively, and then the signal can be transmitted into the cavity 101 through the input connector 2, and the signal 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, on the one hand, 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 interdigital structure, and then pass through the staggered upper partition 106 and the lower partition 107, flow from the curved channel 108, and then pass through the high-end output The connector 3 is discharged. The present design changes the conventional combiner design into an interdigital structure plus a low-pass component 501. The interdigital structure constitutes a high-pass filter, which is also called a low-cutoff filter or a low-resistance filter. It allows frequencies above a certain cutoff frequency to pass through, while greatly attenuating lower frequencies. It removes unnecessary low-frequency components in the signal or removes low-frequency interference. The low-pass component 501 constitutes a low-pass filter. The low-pass filter is an electronic filtering device that allows signals below the cutoff frequency to pass through, but does not allow signals above the cutoff frequency to pass through. It solves the problem that it is difficult to achieve strong coupling in the design of a broadband combiner, and can achieve a relatively wide passband. Example

[0023] Reference Figure 1-Figure 10 A high-pass low-pass duplexer includes a housing 1, a cavity 101 disposed inside the housing 1, a long slot 102 disposed on the cavity 101; a vertically placed low-pass component 501 is disposed in the cavity 101, an input connector 2 is disposed on the side of the housing 1, and the input connector 2 matches with the top 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 matches with the bottom of the low-pass component 501; and an interdigital structure is provided, In the long groove 102, the interdigital structure includes an upper partition 106 and a lower partition 107. The upper partition 106 is fixedly arranged on the top inner wall of the long groove 102, and the lower partition 107 is fixedly arranged 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. A high-end output connector 3 is provided on the top of the shell 1. One end of the interdigital structure cooperates with the low-pass component 501, and the high-end output connector 3 is arranged at the end of the interdigital structure away from the low-pass component 501.

[0024] Reference Figure 1-Figure 6 and Figure 8 There are multiple upper partitions 106 and lower partitions 107, and the multiple upper partitions 106 and lower partitions 107 are staggered with each other. 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.

[0025] In this embodiment, after the signal passes through the input connector 2, it will enter the interdigital structure, first flow through the gap between the upper partition 106 and the long slot 102, then flow through the curved channel 108 between the upper partition 106 and the lower partition 107, and then flow through the gap between the lower partition 107 and the top inner wall of the long slot 102. Such a circular flow increases the signal flow time, and then the signal is discharged through the high-end output connector 3, thereby removing unnecessary low-frequency components in the signal or removing low-frequency interference, thereby improving the accuracy of the signal, solving the problem that it is difficult to achieve strong coupling in the design of a broadband combiner, and achieving a relatively wide passband.

[0026] Reference Figure 1-Figure 4 , Figure 7 , Figure 8 and Fig.10 The bottom output connector 4 is provided with a bottom output fixing plate 401, 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 shell 1, and the bottom output connector 4 is also provided with a bottom output plug-in rod 403 and a bottom output core rod 404.

[0027] The bottom output fixing plate 401 and the bottom output fixing screw 402 can be conveniently fixedly connected to the shell 1, which is more convenient to use. The bottom output plug rod 403 can be conveniently connected to an external device; the bottom output core rod 404 can be used in conjunction with the low-pass component 501.

[0028] Reference Figure 1-Figure 4 , Figure 7-10 A connecting rod 503 is provided at the bottom of the low-pass component 501, and a socket 504 is provided in the connecting rod 503. The bottom output core rod 404 is inserted into the socket 504, and a through hole 505 connected to the socket 504 is also provided on the connecting rod 503.

[0029] Reference Figure 1-Figure 4 , Figure 7-10 A sleeve 5 is provided in the cavity 101 , a low-pass component 501 is arranged in the sleeve 5 , and the low-pass component 501 abuts against the inner wall of the sleeve 5 .

[0030] Specifically, when in use, the bottom output core rod 404 is plugged into the jack 504 to facilitate signal transmission. Secondly, the connecting rod 503 is provided to facilitate the connection of the bottom output core rod 404.

[0031] Reference Figure 1-Figure 10An 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, and an input plug-in rod 203 and an input core rod 204 are provided on the input connector 2.

[0032] Reference Figure 1-Figure 4 , Figure 7-10 A thin rod 502 is provided on the top of the low-pass component 501 , the input core rod 204 corresponds to the thin rod 502 , a vertical groove 105 is provided on the cavity 101 , and the thin rod 502 is placed in the vertical groove 105 .

[0033] In this embodiment, when in use, the input fixing plate 201 is fitted with the side of the shell 1, and then the input fixing plate 201 is fixedly connected to the shell 1 by the input fixing screws 202. The input plug rod 203 is provided to facilitate the input connector 2 to connect to an external device. Secondly, the input core rod 204 corresponds to the thin rod 502 at the top of the low-pass component 501 to facilitate signal transmission. The vertical groove 105 is provided to facilitate the placement of the thin rod 502.

[0034] Reference Figure 1-Figure 4 , Figure 6-Figure 10 A 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, and the high-end output fixing screw 302 passes through one end of the high-end output fixing plate 301 and is threadedly connected to the housing 1.

[0035] Reference Figure 1-Figure 4 , Figure 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 groove 102, and the high-end output core rod 304 corresponds to the end of the interdigital structure away from the low-pass component 501.

[0036] The high-end output fixing plate 301 and the high-end output fixing screw 302 can be used to fix the high-end output connector 3 on the housing 1, which is more convenient to use. Secondly, the high-end output plug-in rod 303 can be used to 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, so that the signals passing through the interdigital structure can be easily discharged through the high-end output connector 3.

[0037] Reference Figure 1-Figure 10 A first mounting hole 103 is provided on the cavity 101, and a cover plate 109 is connected to the front and side surfaces of the cavity 101. A locking screw 110 is provided on the cover plate 109. The locking screw 110 passes through the cover plate 109 and is threadedly connected to the cavity 101. A second mounting hole 104 is provided on the shell 1.

[0038] In the present invention, when in use, a cover plate 109 is connected to both the front and back sides of the cavity 101, and a locking screw 110 is installed on the cover plate 109 to make it threadedly connected to the first mounting hole 103 on the cavity 101, so that the cover plate 109 can be fixed, and the cover plate 109 can block the long groove 102 and the vertical groove 105, thereby ensuring the use effect of the internal structure. Secondly, a plate can also be connected to the shell 1 to block the shell 1, and the plate can be fixed by connecting screws in the second mounting hole 104, which is convenient for use.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

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

2. A high-pass and low-pass duplexer according to claim 1, characterized in that: A plurality of the upper partitions (106) and the lower partitions (107) are provided, and the plurality of the upper partitions (106) and the lower partitions (107) are arranged in an alternating manner, and a gap is provided 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. The high-pass and low-pass duplexer according to claim 2, characterized in that: The bottom output connector (4) is provided with a bottom output fixing plate (401), 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), and the bottom output connector (4) is also provided with a bottom output plug rod (403) and a bottom output core rod (404).

4. The high-pass and low-pass duplexer according to claim 3, characterized in that: A connecting rod (503) is provided at the bottom of the low-pass component (501), a socket (504) is provided in the connecting rod (503), the bottom output core rod (404) is plugged into the socket (504), and a through hole (505) connected to the socket (504) is also provided on the connecting rod (503).

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

6. The high-pass and 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), and an input plug-in rod (203) and an input core rod (204) are provided on the input connector (2).

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

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

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

10. The high-pass and 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 surfaces of the cavity (101) are connected to a cover plate (109); the cover plate (109) is provided with a locking screw (110); the locking screw (110) passes through the cover plate (109) and is threadedly connected to the cavity (1); and the housing (1) is provided with a second mounting hole (104).

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