Ultra-wide passband combiner input and output coupling structure

Abstract

The present invention discloses an input-output coupling structure of an ultra-wide passband combiner, which belongs to the field of combiners. The input-output coupling structure of an ultra-wide passband combiner includes a main body, a cavity is provided in the main body, a combline resonator is provided in the cavity, and the combline resonator is fixedly connected in the cavity by a resonator fixing screw; an L-end low-pass is also connected in the cavity, a COM input-end coupling block corresponding to the COM-end input connector is connected in the cavity, and the COM input-end coupling block is welded and connected to the L-end low-pass; an H-port input copper rod and an L-port input copper rod are respectively connected in the H-port output connector and the L-port output connector, and the L-port input copper rod is welded and connected to the L-end low-pass, and an H-port coupling resonant column is also provided in the cavity; the present invention solves the drawback that it is difficult to achieve strong coupling in the design of broadband combiners, and increases the characteristics of stability, consistency, reliability, operability, low cost, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of combiners, and in particular to an input-output coupling structure of an ultra-wide passband combiner. Background Art

[0002] In the wireless mobile phone communication system, the main function of the combiner is to combine the input multi-band signals together and output them to the same indoor distribution system. In engineering applications, it is necessary to output 800MHZ C network, 900MHz G network or other different frequencies at the same time. The use of a combiner can make an indoor distribution system work in CDMA band, GSM band or other bands at the same time. The combiner is generally used at the transmitting end. Its function is to combine two or more RF signals sent from different transmitters into one RF device sent to the antenna for transmission, while avoiding mutual influence between the signals of each port. In the design of broadband combiner, due to the wide passband, the coupling required at the port is relatively strong. If the conventional design inductive coupling is used, it is difficult to achieve a strong coupling value, and the existing inductive coupling is not easy to control, the tuning is troublesome, and the processing cost and batch cost are relatively high. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the prior art and to propose an ultra-wide passband combiner input-output coupling structure.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An ultra-wide passband combiner input-output coupling structure comprises a main body, a cavity is arranged in the main body, a comb line resonator is arranged in the cavity, and the comb line resonator is fixedly connected in the cavity by a resonator fixing screw;

[0006] The cavity is also connected with an L-end low-pass, one side of the body is provided with a COM-end input connector, the cavity is connected with a COM-end input coupling block corresponding to the COM-end input connector, and the COM-end input coupling block is welded to the L-end low-pass;

[0007] An H-port output connector and an L-port output connector are provided on one side of the main body away from the COM-end input connector, and an H-port input copper rod and an L-port input copper rod are respectively connected to the H-port output connector and the L-port output connector, and the L-port input copper rod is connected to the L-end low-pass welding. An H-port coupling resonant column is also provided in the cavity, and the H-port coupling resonant column cooperates with the H-port input copper rod.

[0008] Preferably, the inner wall of the cavity is also connected to a COM terminal support member, the COM terminal support member abuts against the bottom of the COM input terminal coupling block, and the COM terminal support member is specifically made of insulating material.

[0009] Preferably, a partition is fixedly connected to the inner wall of the cavity, an L-end support is connected inside the partition, the L-end support abuts against the bottom outer wall of the L-end low-passage, and the L-end support is specifically made of insulating material.

[0010] Preferably, the COM input terminal coupling block is connected with a COM terminal plastic fixing screw, and the COM input terminal coupling block is connected to the COM terminal support member via the COM terminal plastic fixing screw.

[0011] Preferably, the L-end low-pass passage is fixedly connected to the L-end support member via an L-end plastic fixing screw.

[0012] Preferably, a circular hole is provided on the side wall of the main body, an H-port resonance column fixing screw matching the H-port coupling resonance column is connected in the circular hole, and the circular hole and the COM end input connector are located on the same side of the main body.

[0013] Preferably, the side wall of the main body is fixedly connected with a first fixing plate via a COM terminal connector fixing screw, and the first fixing plate is fixedly connected to the COM terminal input connector.

[0014] Preferably, a COM-end input copper rod is connected inside the COM-end input connector, and the COM-end input copper rod is connected to the COM-end input coupling block.

[0015] Preferably, the side walls of the main body are fixedly connected with a second fixing plate and a third fixing plate by means of H-port joint fixing screws and L-port joint fixing screws respectively, the second fixing plate is fixedly connected to the H-port output joint, and the third fixing plate is fixedly connected to the L-port output joint.

[0016] Preferably, the top outer wall of the main body is connected to a cover plate, the main body and the cover plate are both provided with threaded holes, limiting screws are connected in the threaded holes, the comb line resonator is also provided with a concave hole, and the cover plate is also provided with a tuning screw corresponding to the concave hole.

[0017] Compared with the prior art, the present invention provides an ultra-wide passband combiner input-output coupling structure, which has the following beneficial effects:

[0018] 1. The input and output coupling structure of the ultra-wide passband combiner, when in use, fix the first fixing plate and the COM-end input connector to the side wall of the main body through the COM-end connector fixing screws, fix the second fixing plate and the H-port output connector to the other side of the main body through the H-port connector fixing screws, fix the third fixing plate and the L-port output connector to the side wall of the main body through the L-port connector fixing screws, and the H-port output connector and the L-port output connector are located on the same side, and the H-port coupling resonant column is fixedly connected in the cavity through the H-port resonant column fixing screws, and then the COM-end input copper rod is matched with the COM-end coupling block, and then the COM-end coupling block is fixedly connected to the COM-end support member through the COM-end plastic fixing screws, and then the L-end low-pass is placed in the cavity, and through the L-end support The support is supported by a support piece and fixed by a plastic fixing screw at the L end. Then the L-end low-pass is welded to the COM input coupling block, and the L-end low-pass is welded to the L-port input copper rod in the L-port output connector, and the H-port input copper rod in the H-port output connector is coupled to the H-port coupling resonant column. By changing the inductive coupling of the conventional design to a capacitive coupling that is easy to implement and easy to control, the L-port coupling and the COM-port coupling are designed and used according to the characteristics of the cavity arrangement. The design is relatively easy to control product indicators, convenient to tune, high in consistency, and relatively low in processing cost and batch cost. Secondly, the design adds a comb line resonator and a COM input coupling block inside the connector intake cavity to increase the coupling area with the main path to increase the coupling strength. The coupling strength is relatively strong and easy to implement.

[0019] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention solves the disadvantage that it is difficult to achieve strong coupling in the design of broadband combiner, and increases the characteristics of stability, consistency, reliability, operability, low cost, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of the input and output coupling structure of the ultra-wide passband combiner proposed by the present invention;

[0021] Figure 2 Schematic diagram of the internal structure of the input and output coupling structure of the ultra-wide passband combiner proposed by the present invention Figure 1 ;

[0022] Figure 3 Schematic diagram of the internal structure of the input and output coupling structure of the ultra-wide passband combiner proposed by the present invention Figure 2 ;

[0023] Figure 4 This is a schematic diagram of a top view of the input and output coupling structure of the ultra-wide passband combiner proposed by the present invention;

[0024] Figure 5This is a schematic diagram of the main view of the input and output coupling structure of the ultra-wide passband combiner proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the input and output coupling structure of the ultra-wide passband combiner proposed by the present invention from a rear view;

[0026] Figure 7 The ultra-wide passband combiner input and output coupling structure proposed by the present invention Figure 4 Schematic diagram of the structure of part A.

[0027] In the figure: 1, main body; 101, cavity; 102, threaded hole; 103, round hole; 104, H-port resonant column fixing screw; 105, H-port coupled resonant column; 2, cover plate; 201, limit screw; 202, tuning screw; 3, comb line resonator; 301, resonator fixing screw; 4, first fixing plate; 401, COM end input connector; 402, COM end connector fixing screw; 403, COM end input copper rod; 404, COM input Input coupling block; 405, COM end plastic fixing screw; 406, COM end support; 5, second fixing plate; 501, H port output connector; 502, H port connector fixing screw; 503, H port input copper rod; 6, third fixing plate; 601, L port output connector; 602, L port connector fixing screw; 603, L port input copper rod; 7, L end low pass; 8, partition; 801, L end support; 802, L end plastic fixing screw. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] Example:

[0031] Reference Figure 1-7 The ultra-wide passband combiner input-output coupling structure comprises a main body 1, a cavity 101 is arranged in the main body 1, a combline resonator 3 is arranged in the cavity 101, and the combline resonator 3 is fixedly connected in the cavity 101 by a resonator fixing screw 301;

[0032] The cavity 101 is also connected with an L-end low-pass 7, a COM-end input connector 401 is provided on one side of the main body 1, a COM-end input coupling block 404 corresponding to the COM-end input connector 401 is connected to the cavity 101, and the COM-end coupling block 404 is welded to the L-end low-pass 7;

[0033] An H-port output connector 501 and an L-port output connector 601 are provided on one side of the main body 1 away from the COM-end input connector 401. The H-port output connector 501 and the L-port output connector 601 are respectively connected with an H-port input copper rod 503 and an L-port input copper rod 603. The L-port input copper rod 603 is welded to the L-end low-pass 7. An H-port coupling resonant column 105 is also provided in the cavity 101. The H-port coupling resonant column 105 cooperates with the H-port input copper rod 503.

[0034] Reference Figure 3 The inner wall of the cavity 101 is also connected to a COM terminal support member 406 , which abuts against the bottom of the COM input terminal coupling block 404 . The COM terminal support member 406 is specifically made of insulating material.

[0035] Reference Figure 2-4 The inner wall of the cavity 101 is fixedly connected with a partition 8, and an L-end support member 801 is connected inside the partition 8. The L-end support member 801 abuts against the bottom outer wall of the L-end low-pass 7, and the L-end support member 801 is specifically made of insulating material.

[0036] Reference Figure 2 , Figure 3 and Figure 7 A COM terminal plastic fixing screw 405 is connected to the COM input terminal coupling block 404 , and the COM input terminal coupling block 404 is connected to the COM terminal support member 406 through the COM terminal plastic fixing screw 405 .

[0037] Reference Figure 2-4 The L-end low pass 7 is fixedly connected to the L-end support member 801 by an L-end plastic fixing screw 802 .

[0038] Reference Figure 1 , Figure 2 and Figure 5 A circular hole 103 is provided on the side wall of the main body 1 , and an H-port resonance column fixing screw 104 matching with the H-port coupling resonance column 105 is connected in the circular hole 103 . The circular hole 103 and the COM-end input connector 401 are located on the same side of the main body 1 .

[0039] Reference Figure 1-5The side wall of the main body 1 is fixedly connected with the first fixing plate 4 through the COM terminal connector fixing screws 402. The first fixing plate 4 is fixedly connected with the COM terminal input connector 401. The COM terminal connector fixing screws 402 can facilitate the installation and disassembly of the first fixing plate 4 and the COM terminal input connector 401.

[0040] Reference Figure 4 and Figure 7 A COM input copper rod 403 is connected to the COM input connector 401 , and the COM input copper rod 403 is connected to the COM input coupling block 404 .

[0041] Reference Figure 1-6 The side walls of the main body 1 are fixedly connected with the second fixing plate 5 and the third fixing plate 6 by means of H-port joint fixing screws 502 and L-port joint fixing screws 602, respectively. The second fixing plate 5 is fixedly connected to the H-port output joint 501, and the third fixing plate 6 is fixedly connected to the L-port output joint 601. The H-port joint fixing screws 502 and the L-port joint fixing screws 602 can facilitate the installation and disassembly of the second fixing plate 5 and the third fixing plate 6 as well as the H-port output joint 501 and the L-port output joint 601.

[0042] Reference Figure 1 The top outer wall of the main body 1 is connected with a cover plate 2, and threaded holes 102 are provided on the main body 1 and the cover plate 2, and a limiting screw 201 is connected in the threaded hole 102. A concave hole is also provided on the comb line resonator 3, and a tuning screw 202 corresponding to the concave hole is also provided on the cover plate 2.

[0043] In the present invention, when in use, the first fixing plate 4 and the COM-end input connector 401 are fixed to the side wall of the main body 1 through the COM-end connector fixing screws 402, the second fixing plate 5 and the H-port output connector 501 are fixedly connected to the other side of the main body 1 through the H-port connector fixing screws 502, the third fixing plate 6 and the L-port output connector 601 are fixedly connected to the side wall of the main body 1 through the L-port connector fixing screws 602, and the H-port output connector 501 and the L-port output connector 601 are located on the same side, the H-port coupling resonance column 105 is fixedly connected in the cavity 101 through the H-port resonance column fixing screws 104, and then the COM-end input copper rod 403 is matched with the COM-end coupling block 404, and then the COM-end plastic fixing screws 405 are used to fix the COM-end coupling block 404 and the COM-end support 406, and then the L-end low-pass 7 is placed in the cavity 101. The L-end support 801 is used to support the L-end connector, which is fixed by the L-end plastic fixing screw 802. Then, the L-end low-pass filter 7 is welded to the COM input coupling block 404, and the L-end low-pass filter 7 is welded to the L-port input copper rod 603 in the L-port output connector 601. The H-port input copper rod 503 in the H-port output connector 501 is coupled to the H-port coupling resonant column 105. By changing the inductive coupling of the conventional design to a capacitive coupling that is easy to implement and easy to control, the L-port coupling and the COM-port coupling are designed and used according to the characteristics of the cavity arrangement. The design is relatively easy to control product indicators, convenient to tune, high in consistency, and relatively low in processing cost and batch cost. Secondly, the design adds a comb line resonator 3 and a COM input coupling block 404 inside the connector intake cavity to increase the coupling area with the main path and increase the coupling strength. The coupling strength is relatively strong and easy to implement.

[0044] 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. An ultra-wide passband combiner input-output coupling structure, comprising a main body (1), characterized in that: A cavity (101) is provided in the main body (1), a combline resonator (3) is provided in the cavity (101), the combline resonator (3) is fixedly connected in the cavity (101) by a resonator fixing screw (301), one end of the combline resonator (3) is arranged close to the COM input end coupling block (404), and the other end of the combline resonator (3) is arranged close to the H-port coupling resonance column (105); The cavity (101) is also connected to an L-end low-pass filter (7); a COM-end input connector (401) is provided on one side of the main body (1); a COM-end input coupling block (404) corresponding to the COM-end input connector (401) is connected to the cavity (101); the COM-end input coupling block (404) is welded to the L-end low-pass filter (7); An H-port output connector (501) and an L-port output connector (601) are provided on a side of the main body (1) away from the COM-end input connector (401); an H-port input copper rod (503) and an L-port input copper rod (603) are connected to the H-port output connector (501) and the L-port output connector (601), respectively; the L-port input copper rod (603) is welded to the L-end low-pass filter (7); an H-port coupling resonant column (105) is further provided in the cavity (101); the H-port coupling resonant column (105) cooperates with the H-port input copper rod (503); The inner wall of the cavity (101) is also connected to a COM terminal support member (406), the COM terminal support member (406) abuts against the bottom of the COM input terminal coupling block (404), and the COM terminal support member (406) is specifically made of an insulating material; The COM input terminal coupling block (404) is connected to a COM terminal plastic fixing screw (405), and the COM input terminal coupling block (404) is connected to a COM terminal support member (406) via the COM terminal plastic fixing screw (405); A circular hole (103) is provided on the side wall of the main body (1), an H-port resonant column fixing screw (104) matching with the H-port coupling resonant column (105) is connected inside the circular hole (103), and the circular hole (103) and the COM-end input connector (401) are located on the same side of the main body (1); The COM terminal input connector (401) is internally connected with a COM terminal input copper rod (403), and the COM terminal input copper rod (403) is connected to a COM terminal coupling block (404).

2. The ultra-wideband combiner input-output coupling structure according to claim 1, characterized in that: The inner wall of the cavity (101) is fixedly connected with a partition (8), and an L-end support member (801) is connected inside the partition (8). The L-end support member (801) abuts against the bottom outer wall of the L-end low-pass (7), and the L-end support member (801) is specifically made of insulating material.

3. The ultra-wideband combiner input-output coupling structure according to claim 2, characterized in that: The L-end low-pass filter (7) and the L-end support member (801) are fixed to each other via an L-end plastic fixing screw (802).

4. The ultra-wideband combiner input-output coupling structure according to claim 1, characterized in that: The side wall of the main body (1) is fixedly connected to a first fixing plate (4) via a COM terminal connector fixing screw (402), and the first fixing plate (4) is fixedly connected to the COM terminal input connector (401).

5. The ultra-wideband combiner input-output coupling structure according to claim 1, characterized in that: The side walls of the main body (1) are fixedly connected to a second fixing plate (5) and a third fixing plate (6) via H-port connector fixing screws (502) and L-port connector fixing screws (602), respectively; the second fixing plate (5) is fixedly connected to the H-port output connector (501), and the third fixing plate (6) is fixedly connected to the L-port output connector (601).

6. The ultra-wideband combiner input-output coupling structure according to claim 1, characterized in that: The top outer wall of the main body (1) is connected to a cover plate (2); both the main body (1) and the cover plate (2) are provided with threaded holes (102); a limit screw (201) is connected inside the threaded hole (102); a concave hole is also provided on the comb line resonator (3); and a tuning screw (202) corresponding to the concave hole is also provided on the cover plate (2).

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