Ultra-wideband three-in three-out same-frequency combiner

Abstract

The utility model discloses an ultra wide band three-in three-out co-frequency combiner, which relates to the co-frequency combiner technology field, and comprises a housing and bin covers, the side of the housing is rotatably connected with screws distributed at equal intervals, and the bin covers are fixedly connected with the top and the bottom of the housing through the screws. A partition plate in the shell divides the interior of the shell into an upper mounting bin and a lower mounting bin, an upper mounting chamber is arranged at the top of the partition plate, an upper sealing plate is fixedly connected to the top of the upper mounting chamber, the upper mounting chamber is located in the upper mounting bin, and a first strip-shaped wire and a second strip-shaped wire are arranged in the upper mounting chamber. According to the ultra-wide-band three-in three-out same-frequency combiner, the bridges are located on the two sides of the interior of the shell respectively, the intensity sequence of coupling in the two bridges must be opposite, the bridges are of an asymmetric structure, the size is reduced, meanwhile, due to the structure that the thickness difference of the 3dB bridge and the 5dB coupler is large, the phase compensation line is arranged on the back face of the cavity, and the phase compensation line is arranged on the back face of the cavity. And almost no extra size is occupied, and the overall size is reduced.

Description

Technical Field

[0001] This utility model relates to the field of frequency combiners, specifically an ultra-wideband three-input three-output frequency combiner. Background Technology

[0002] Ultra-wideband three-input three-output co-frequency combiners are widely used in indoor distribution systems for 5G communication bands. This co-frequency combiner is a miniaturized design scheme, pursuing small size, light weight, high power, and low intermodulation.

[0003] A typical three-input, three-output in-frequency combiner consists of two 3dB bridges and one 5dB coupler. The bridges and couplers are directly connected. The two bridges are constant phase compensation lines with a length of approximately 3 / 4 wavelength. Both the bridges and the couplers have symmetrical structures.

[0004] To overcome the above-mentioned defects, the prior art (publication number: CN203312438U) discloses a co-frequency combiner, which integrates the functions of the bridge, isolator and coupler by sequentially arranging a bridge cavity with built-in bridge, an isolator cavity with at least two vertically arranged built-in isolators, and a coupling cavity with at least two vertically arranged built-in coupling conductors on the inner side of the cavity. This truly realizes the integration of the functions of the three passive devices: bridge, isolator and coupler. It can perform the function of splitting and combining co-frequency signals, while also making the signal directional, greatly increasing the isolation between the two signals, reducing transmission loss, improving anti-interference, and can also couple out monitoring signals, greatly improving the signal utilization rate.

[0005] A typical three-input, three-output in-frequency combiner consists of two 3dB bridges and one 5dB coupler. The bridges and couplers are directly connected. The two bridges are constant phase compensation lines with a length of approximately 3 / 4 wavelength. Both the bridges and couplers are symmetrical structures. Symmetrical bridges and couplers require a relatively large number of stages, resulting in a large product size. Utility Model Content

[0006] The purpose of this invention is to provide an ultra-wideband three-input three-output frequency combiner to solve the problem in the background technology that the bridge and coupler are symmetrical structures, which require a large number of stages and result in large product size.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an ultra-wideband three-input three-output frequency combiner, comprising a housing and a cover, wherein screws are rotatably connected to the side of the housing at equal intervals, and the cover is fixedly connected to the top and bottom of the housing by screws;

[0008] A partition is fixedly connected in the middle of the inner shell, and the partition divides the inner shell into an upper installation chamber and a lower installation chamber. An upper installation chamber is provided at the top of the partition, and an upper sealing plate is fixedly connected to the top of the upper installation chamber. The upper installation chamber is located inside the upper installation compartment, and a first strip wire and a second strip wire are provided inside the upper installation chamber.

[0009] Preferably, the outer casing has three connection holes on each side, and every two symmetrically distributed connection holes are aligned with each other, and the connection holes communicate with the interior of the upper mounting chamber.

[0010] Preferably, the bottom of the partition is provided with a lower mounting chamber, and a lower sealing plate is fixedly connected to the bottom of the lower mounting chamber. The lower mounting chamber is provided with a phase compensation line, and the lower mounting chamber is located inside the lower mounting compartment.

[0011] Preferably, an adjusting screw is fixedly connected inside the lower mounting compartment, and the adjusting screw includes a nut fixedly connected inside the lower mounting compartment, and a bare screw is threaded inside the nut. The screw extends through the partition to the interior of the upper mounting compartment, and the screw is in contact with the bottom of the first strip-shaped wire and the bottom of the second strip-shaped wire respectively.

[0012] Preferably, two connecting seats are fixedly connected inside the middle partition of the outer shell, and the connecting seats are fixedly connected to both ends of the phase compensation line, and the end of the connecting seat away from the phase compensation line is fixedly connected to the second strip wire.

[0013] Preferably, mounting sleeves are fixedly connected to both sides of the outer shell, and connecting heads are fixedly connected inside the mounting sleeves, and the mounting sleeves and each connecting hole are aligned with each other.

[0014] Preferably, the connecting contact head is engaged inside the connecting hole, and the ends of the connecting contact head are engaged with the ends of the first strip wire and the second strip wire respectively. The outer side of the mounting sleeve away from the outer shell is threaded with a sealing cap.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This is an ultra-wideband three-input three-output frequency combiner. The bridges are located on both sides inside the housing. The order of the coupling strength of the two bridges must be opposite. Because the bridges are asymmetrical structures, the size is reduced. At the same time, because the thickness of the 3dB bridge and the 5dB coupler are significantly different, the phase compensation line is set on the opposite side of the cavity, which hardly occupies any extra space, thus reducing the overall size.

[0017] Furthermore, the adjusting screws are located at the bottom of the first and second strip-shaped wires, respectively. By adjusting the screw inside the adjusting screw, the screw pushes up the first and second strip-shaped wires to adjust their positions inside the housing. This prevents the misalignment of parts inside the housing caused by errors or collisions during product manufacturing, which would prevent adjustment. In addition, the adjusting screws added to the strongest coupling of the bridge can adjust the coupling strength. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the upper installation chamber structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the lower installation chamber structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the mounting sleeve of this utility model;

[0022] Figure 5 This is a schematic diagram of the first strip-shaped conductor structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the phase compensation line structure of this utility model;

[0024] Figure 7 This is a schematic diagram illustrating the working principle of this utility model.

[0025] In the diagram: 1. Outer shell; 2. Cover; 3. Upper mounting chamber; 4. Lower mounting chamber; 5. Connecting hole; 6. Upper mounting chamber; 7. Upper sealing plate; 8. Lower mounting chamber; 9. Lower sealing plate; 10. Adjusting screw; 11. Mounting sleeve; 12. Connecting contact head; 13. Sealing cover; 14. First strip wire; 15. Second strip wire; 16. Connecting seat; 17. Phase compensation wire. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] Please see Figure 1 - Figure 6 The present invention provides the following technical solution:

[0029] An ultra-wideband three-input three-output frequency combiner includes a housing 1 and a cover 2. The housing 1 is rotatably connected to the side with equally spaced screws, and the cover 2 is fixedly connected to the top and bottom of the housing 1 by screws.

[0030] A partition is fixedly connected in the middle of the inner shell 1, and the partition inside the shell 1 divides the inner shell 1 into an upper installation chamber 3 and a lower installation chamber 4 respectively. An upper installation chamber 6 is provided on the top of the partition, and an upper sealing plate 7 is fixedly connected to the top of the upper installation chamber 6. The upper installation chamber 6 is located inside the upper installation chamber 3, and a first strip wire 14 and a second strip wire 15 are provided inside the upper installation chamber 6.

[0031] The outer casing 1 has three connection holes 5 on both sides, and every two symmetrically distributed connection holes 5 are aligned with each other, and the connection holes 5 communicate with the interior of the upper mounting chamber 6.

[0032] The bottom of the partition is provided with a lower installation chamber 8, and a lower sealing plate 9 is fixedly connected to the bottom of the lower installation chamber 8. A phase compensation line 17 is provided inside the lower installation chamber 8, and the lower installation chamber 8 is located inside the lower installation compartment 4.

[0033] An adjusting screw 10 is fixedly connected inside the lower mounting chamber 4. The adjusting screw 10 includes a nut fixedly connected inside the lower mounting chamber 4. A bare screw rod is threaded inside the nut. The screw rod extends through the partition to the interior of the upper mounting chamber 6. The screw rod is in contact with the bottom of the first strip wire 14 and the second strip wire 15 respectively.

[0034] Two connecting seats 16 are fixedly connected inside the middle partition of the outer casing 1, and the connecting seats 16 are fixedly connected to both ends of the phase compensation line 17. The end of the connecting seat 16 away from the phase compensation line 17 is fixedly connected to the second strip wire 15.

[0035] Mounting sleeves 11 are fixedly connected to both sides of the outer casing 1, and connecting heads 12 are fixedly connected inside the mounting sleeves 11. The mounting sleeves 11 and each connecting hole 5 are aligned with each other.

[0036] The connecting contact 12 is engaged inside the connecting hole 5, and the ends of the connecting contact 12 are engaged with the ends of the first strip wire 14 and the second strip wire 15 respectively. The outer side of the mounting sleeve 11 away from the outer shell 1 is threaded with a sealing cap 13.

[0037] Example 2:

[0038] Based on Example 1, its specific working principle is as follows:

[0039] This ultra-wideband three-input three-output frequency combiner first rotates the sealing cover 13 to separate it from the mounting sleeve 11. At the same time, the cables are installed and connected to the connecting contacts 12 inside each mounting sleeve 11. The cables are then connected to the first strip wire 14 and the second strip wire 15 inside the outer casing 1 through the connecting contacts 12. The cables located on the same side of the outer casing 1 are the output end and the input end, respectively. At this time, the cables will be connected to the end of the second strip wire 15 and the two ends of the first strip wire 14 through the connecting contacts 12. The three mounting sleeves 11 receive different radio frequency signals. The circuit design inside the frequency combiner combines these three signals. The combined signal is transmitted from the output end, realizing the same frequency transmission of multiple signals. The phase compensation line 17 connects the second strip wire 15 to each other through two connectors 16. The multiple signal sources of the two second strip wires 15 need to be precisely synchronized. The signals are adjusted to ensure synchronization between different signals, thereby achieving efficient multi-channel transmission.

[0040] Depend on Figure 5 , Figure 6 and Figure 7 It can be seen that the two first strip wires 14 form a 7-section symmetrical 5dB coupler at their contact points, and the first strip wire 14 and the second strip wire 15 form a 5-section asymmetrical 3dB bridge at their contact points. The bridges are located on both sides inside the housing 1. The order of the coupling strength of the two bridges must be opposite. Since the bridge is an asymmetrical structure, the size is reduced. At the same time, because the thickness of the 3dB bridge and the 5dB coupler is relatively large, the phase compensation line 17 is set on the reverse side of the cavity, which hardly occupies any additional space, thus reducing the overall size.

[0041] The adjusting screws 10 are located at the bottom of the first strip wire 14 and the second strip wire 15 respectively. By adjusting the screw inside the adjusting screw 10, the screw pushes up the first strip wire 14 and the second strip wire 15 to adjust their positions inside the housing 1. This prevents the misalignment of parts inside the housing 1 caused by errors or collisions during product manufacturing, which would prevent adjustment. In addition, the adjusting screw 10, which increases the strongest coupling of the bridge, can adjust the coupling strength.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ultra-wideband three-input three-output frequency combiner, comprising a housing (1) and a cover (2), wherein screws are rotatably connected to the side of the housing (1) at equal intervals, and the cover (2) is fixedly connected to the top and bottom of the housing (1) by screws; Its features are: A partition is fixedly connected in the middle of the shell (1), and the partition inside the shell (1) divides the interior of the shell (1) into an upper installation chamber (3) and a lower installation chamber (4). An upper installation chamber (6) is provided on the top of the partition, and an upper sealing plate (7) is fixedly connected to the top of the upper installation chamber (6). The upper installation chamber (6) is located inside the upper installation chamber (3), and a first strip wire (14) and a second strip wire (15) are provided inside the upper installation chamber (6).

2. The ultra-wideband three-input three-output frequency combiner according to claim 1, characterized in that: The outer shell (1) has three connection holes (5) on both sides, and every two symmetrically distributed connection holes (5) are aligned with each other, and the connection holes (5) communicate with the interior of the upper mounting chamber (6).

3. The ultra-wideband three-input three-output frequency combiner according to claim 2, characterized in that: The bottom of the partition is provided with a lower installation chamber (8), and a lower sealing plate (9) is fixedly connected to the bottom of the lower installation chamber (8). The lower installation chamber (8) is provided with a phase compensation line (17), and the lower installation chamber (8) is located inside the lower installation compartment (4).

4. The ultra-wideband three-input three-output frequency combiner according to claim 3, characterized in that: The lower mounting chamber (4) is fixedly connected to an adjusting screw (10), and the adjusting screw (10) includes a nut fixedly connected to the lower mounting chamber (4), and the nut is threaded with a bare screw rod. The screw rod extends through the partition to the upper mounting chamber (6), and the screw rod is in contact with the bottom of the first strip wire (14) and the second strip wire (15) respectively.

5. The ultra-wideband three-input three-output frequency combiner according to claim 1, characterized in that: Two connecting seats (16) are fixedly connected inside the partition plate of the outer shell (1), and the connecting seats (16) are fixedly connected to both ends of the phase compensation line (17), and the end of the connecting seat (16) away from the phase compensation line (17) is fixedly connected to the second strip wire (15).

6. The ultra-wideband three-input three-output frequency combiner according to claim 5, characterized in that: The outer shell (1) is fixedly connected to both sides with mounting sleeves (11), and the mounting sleeves (11) are fixedly connected to the inside with connecting heads (12), and the mounting sleeves (11) and each connecting hole (5) are aligned with each other.

7. The ultra-wideband three-input three-output frequency combiner according to claim 6, characterized in that: The connecting contact (12) is engaged inside the connecting hole (5), and the ends of the connecting contact (12) are engaged with the ends of the first strip wire (14) and the second strip wire (15) respectively. The mounting sleeve (11) has a sealing cap (13) threadedly connected to the outer side away from the outer shell (1).

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