A power combining device

Abstract

This utility model relates to the field of electromagnetic wave conduction technology, and in particular to a power combining device, including a power combining device body, an X-type input terminal, a Y-type first receiving cavity, a Z-type second receiving cavity, a third receiving cavity, and an output terminal, wherein X∶Y∶Z=4∶2∶1, and Z≥2. The first receiving cavity is disposed on one side of the power combining device body, and the second and third receiving cavities are disposed on the other side of the power combining device body. The first receiving cavities are isolated from each other, and the second receiving cavities are isolated from each other. The power at the input terminal is combined into a first power in the first receiving cavity, the first power is combined into a second power in the second receiving cavity, and the second power is combined into a third power in the third receiving cavity and output from the output terminal. This provides a power combining device with good electromagnetic performance, small size, and is conducive to the miniaturization of equipment.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic wave transmission technology, and in particular to a power combining device. Background Technology

[0002] A power combining device is a device that combines the energy of N input signals into the energy of M output signals (where N≥2 and N>M); the reverse of the power combining device is a power distribution device.

[0003] Existing power combining devices are large in size, have low electromagnetic performance, and poor heat dissipation, which limits their application scenarios. Utility Model Content

[0004] The purpose of this invention is to provide a power combining device to solve at least one of the technical problems in the prior art.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A power combining device includes a power combining device body, and further includes an X-type input terminal, a Y-type first receiving cavity, a Z-type second receiving cavity, a third receiving cavity, and an output terminal, wherein X:Y:Z = 4:2:1, and Z ≥ 2. The first receiving cavity is disposed on one side of the power combining device body, and the second and third receiving cavities are disposed on the other side of the power combining device body. The first receiving cavities are isolated from each other, and the second receiving cavities are isolated from each other. The power at the input terminal is combined into a first power in the first receiving cavity, the first power is combined into a second power in the second receiving cavity, and the second power is combined into a third power in the third receiving cavity and output from the output terminal.

[0007] Furthermore, the first receiving cavity includes a first combining cavity and a first isolation cavity, which are isolated from each other. The balanced power at the input end is combined into a first power in the first combining cavity, and the unbalanced power at the input end is absorbed in the first isolation cavity.

[0008] Furthermore, the second receiving cavity includes a second combining cavity and a second isolation cavity, which are isolated from each other. The balanced power of the first power is combined into the second power in the second combining cavity, and the unbalanced power of the first power is absorbed in the second isolation cavity.

[0009] Furthermore, the third receiving cavity includes a third combining cavity and a third isolation cavity, which are isolated from each other. The balanced power of the second power is combined into the third power in the third combining cavity and output from the output terminal, while the unbalanced power of the second power is absorbed in the third isolation cavity.

[0010] Furthermore, the power combining device is equipped with a fan, which can simultaneously dissipate heat from the first, second, and third accommodating cavities.

[0011] This utility model has the following advantages:

[0012] On the one hand, because the first receiving cavities are not interconnected, their electromagnetic signals will not interfere with each other, meaning the first receiving cavities are isolated from each other. Similarly, the second receiving cavities are not interconnected, so their electromagnetic signals will not interfere with each other, meaning the second receiving cavities are also isolated from each other. Furthermore, since the first receiving cavity is located on one side of the main body, and the second and third receiving cavities are located on the other side of the main body, meaning the first receiving cavity is located on one side of the main body, and the second and third receiving cavities are located on the other side, their electromagnetic signals will not interfere with each other either. Therefore, the electromagnetic signals between the first and second receiving cavities will not interfere with each other, nor will they interfere with each other between the first and third receiving cavities, meaning the first and second receiving cavities are also isolated from each other. Furthermore, the first and third accommodating cavities are also isolated from each other. On the other hand, in the 8-in-1 power combining device of this invention, the 8-channel combining 4-channel structure is set in the first accommodating cavity on one side of the main body, while the 4-channel combining 2-channel structure and the 2-channel combining 1-channel structure are respectively set in the second and third accommodating cavities on the other side of the main body. It is like bending the planar structure of the traditional 8-in-1 power combining device at the junction of the 8-channel combining 4-channel structure and the 4-channel combining 2-channel structure and then placing it into the cavity of the power combining device. This can greatly reduce the overall length and width of the power combining device, which is conducive to the miniaturization of the device. Moreover, the bent wires are set on both sides of the main body, which is like setting an isolation plate between the wires. Therefore, their electromagnetic signals will not interfere with each other, which improves the electromagnetic performance of the power combining device. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the power combining device of this utility model. Figure 1 ;

[0015] Figure 2 This is a three-dimensional structural diagram of the power combining device of this utility model. Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the power combining device of this utility model;

[0017] Figure 4 for Figure 3 A schematic diagram of the middle section (A) after the lower cover plate has been removed;

[0018] Figure 5 for Figure 3 A schematic diagram of the B-axis after removing the top cover and output terminal;

[0019] Figure 6 This is a simulation curve of the echo of the power combining device of this utility model;

[0020] Figure 7 for Figure 6 A magnified view of a portion of the image;

[0021] Figure 8 This is a simulation curve of the isolation degree of the power combining device of this utility model;

[0022] Figure 9 for Figure 8 A magnified view of a portion of the image;

[0023] Figure 10 This is a thermal simulation curve of the power combining device of this utility model;

[0024] In the diagram: 1-Upper cover plate; 2-Power combining device body; 3-Lower cover plate; 4-Input end; 5-Output end; 6-First receiving cavity; 7-Second receiving cavity; 8-Third receiving cavity; 9-First isolation block; 10-First combining cavity; 11-First isolation cavity; 12-First energy absorber; 13-Second isolation block; 14-Second combining cavity; 15-Second isolation cavity; 16-Second energy absorber; 17-Third isolation block; 18-Third combining cavity; 19-Third isolation cavity; 20-Third energy absorber; 21-Fan; 22-First exhaust port; 23-Second exhaust port. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] A power combining device includes a power combining device body, and further includes an X-shaped input terminal, a Y-shaped first receiving cavity, a Z-shaped second receiving cavity, a third receiving cavity, and an output terminal, wherein X:Y:Z = 4:2:1, and Z ≥ 2. The first receiving cavity is disposed on one side of the power combining device body, and the second and third receiving cavities are disposed on the other side of the power combining device body. The first receiving cavities are isolated from each other, and the second receiving cavities are isolated from each other. The power at the input terminal is combined into a first power in the first receiving cavity, the first power is combined into a second power in the second receiving cavity, and the second power is combined into a third power in the third receiving cavity and output from the output terminal; specifically, as shown... Figures 1 to 5As shown, a power combining device includes an upper cover plate 1, a power combining device body 2 (hereinafter referred to as body 2), and a lower cover plate 3 arranged sequentially from top to bottom. Both the upper cover plate 1 and the lower cover plate 3 are detachably connected to the body 2. The body 2 has eight input terminals 4 (coaxial input terminals in this embodiment) on one side, and the upper cover plate 1 has one output terminal 5 (coaxial output terminal in this embodiment). The body 2 has four first receiving cavities 6 near the lower cover plate 3, and these first receiving cavities 6 are not interconnected. The body 2 has two second receiving cavities 7 and one third receiving cavity 8 near the upper cover plate 1, and these second receiving cavities 7 are not interconnected. A first wire, a second wire, and a third wire are respectively installed in the first receiving cavity 6, the second receiving cavity 7, and the third receiving cavity 8. Each second receiving cavity 8 contains a first wire, a second wire, and a third wire. The cavity 7 is provided with two first channels (through holes in this embodiment, not shown in the figure). The two first channels are respectively connected to two first receiving cavities 6. That is, every two first receiving cavities 6 are connected to the same second receiving cavity 7 through the two first channels. Every two first wires are respectively connected to two input terminals 4. The power of the two input terminals 4 is combined into one first power in one first receiving cavity 6. Every two second wires pass through the two first channels to combine the two first power into one second power in one second receiving cavity 7. Every second receiving cavity 7 is provided with one second channel that is connected to a third receiving cavity 8 (in this embodiment, the second receiving cavity 7 and the third receiving cavity 8 are adjacent and directly connected). The third wire passes through the second channel to combine the second power into one third power and output it from one output terminal 5. In some embodiments, the number of input terminals 4 can be 8, 12, 16, 20, 24, 28, ..., and the corresponding number of first receiving cavities 6 is 4, 6, 8, 10, 12, 14, ..., and the corresponding number of second receiving cavities 7 is 2, 3, 4, 5, 6, 7, ..., which will not be elaborated on due to space limitations. The power combining device of this utility model, on the one hand, because the first receiving cavities 6 are not interconnected, the electromagnetic signals between the first receiving cavities 6 will not interfere with each other, that is, the first receiving cavities 6 are isolated from each other; similarly, the second receiving cavities 7 are not interconnected, so the electromagnetic signals between the second receiving cavities 7 will not interfere with each other, that is, the second receiving cavities 7 are also isolated from each other. This can prevent the signals between the transmission lines in one first receiving cavity 6 and the transmission lines in another first receiving cavity 6, and between the transmission lines in one second receiving cavity 7 and the transmission lines in another second receiving cavity 7 from coupling together, which would increase reflection and lead to a deterioration of the return loss index, thereby improving the electromagnetic performance of the power combining device.The first receiving cavity 6 is located on one side of the body 2, while the second receiving cavity 7 and the third receiving cavity 8 are located on the other side of the body 2. That is, the first receiving cavity 6, the second receiving cavity 7, and the third receiving cavity 8 are respectively located on opposite sides of the body 2. In this configuration, the body 2 acts as an isolation plate between the first receiving cavity 6 and the second receiving cavity 7, and between the first receiving cavity 6 and the third receiving cavity 8. Therefore, the electromagnetic signals between the first receiving cavity 6 and the second receiving cavity 7 will not interfere with each other, and the electromagnetic signals between the first receiving cavity 6 and the third receiving cavity 8 will also not interfere with each other. In other words, the first receiving cavity 6 and the second receiving cavity 7 are mutually isolated. The first cavity 6 and the third cavity 8 are also isolated from each other, which can prevent signal coupling between the transmission lines in the first cavity 6 and the transmission lines in the second cavity 7, as well as between the transmission lines in the first cavity 6 and the third cavity 8, from increasing reflection and deteriorating the return loss index, thereby improving the electromagnetic performance of the power combining device. On the other hand, taking the traditional 8-in-1 stripline power combining device as an example, its stripline structure includes an 8-way combining to a 4-way structure, a 4-way combining to a 2-way structure, and a 2-way combining to a 1-way structure. The above three structures are connected into a single planar stripline structure, which has a large overall length and width, which is not conducive to the miniaturization of the device. Therefore, this practical method is adopted. The novel 8-in-1 power combining device uses an 8-channel to 4-channel power combining structure housed in the first cavity 6 on one side of the main body 2, while the 4-channel to 2-channel and 2-channel to 1-channel power combining structures are housed in the second and third cavities 7 and 8 on the other side of the main body 2, respectively. This is similar to a traditional 8-in-1 planar power combining device, where the 8-channel to 4-channel and 4-channel to 2-channel power combining structures are bent at the junction before being placed into the power combining device cavity. This significantly reduces the overall length and width of the power combining device, facilitating miniaturization. However, directly placing the bent power combining wires into the power combining device cavity can cause crosstalk if the wires are too close together. To reduce electromagnetic performance, increasing the bending radius and thus the distance between the wires would increase the thickness of the power combining device, hindering miniaturization. Therefore, the wires are positioned on both sides of the main body 2, acting like isolation plates between the wires. This prevents electromagnetic signals from interfering with each other, avoiding signal coupling between the transmission lines in the first cavity 6 and the second cavity 7, as well as between the transmission lines in the first cavity 6 and the third cavity 8. This prevents increased reflection and deterioration of return loss, thereby improving the electromagnetic performance of the power combining device while reducing its size, which is beneficial for miniaturization.

[0030] Furthermore, the first receiving cavity includes a first synthesis cavity and a first isolation cavity, which are isolated from each other. The balanced power at the input end is synthesized into a first power in the first synthesis cavity, and the unbalanced power at the input end is absorbed in the first isolation cavity. Specifically, each of the first receiving cavities 6 is provided with a first isolation block 9 (the isolation block can be a metal block integrally formed with the body 2, the same below). The first isolation block 9 divides the first receiving cavity 6 into a first synthesis cavity 10 and a first isolation cavity 11. The first strip is disposed in the first synthesis cavity 10. Every two of the first... The power combining device has two input terminals 4 connected to each other, and the balanced power of the two input terminals 4 is combined into a first power in a first combining cavity 10. A fourth power line is provided in the first isolation cavity 11. Each pair of input terminals 4 is connected to a first energy absorption element 12 (the energy absorption element can be an isolation resistor, hereinafter the same) through two fourth power lines. The unbalanced power of the input terminals 4 is transmitted to the first energy absorption element 12 through the fourth power line and is absorbed. The first isolation block 9 can prevent electromagnetic signals from interfering with each other between the first power line and the fourth power line, thereby improving the electromagnetic performance of the power combining device. Terminology: Unbalanced power refers to the uneven power distribution among multiple signals during the combining process due to differences in amplitude, phase, or frequency. Conversely, balanced power is the power that is evenly distributed among the signals.

[0031] Furthermore, the second receiving cavity includes a second combining cavity and a second isolation cavity, which are isolated from each other. The balanced power of the first power is combined into the second power in the second combining cavity, and the unbalanced power of the first power is absorbed in the second isolation cavity. Specifically, each of the second receiving cavities 7 is provided with a second isolation block 13, which divides the second receiving cavity 7 into a second combining cavity 14 and a second isolation cavity 15. The second strip is provided in the second combining cavity 14, and every two second strips combine two portions of the balanced power of the first power into one portion of the second power in one second combining cavity 14. A fifth strip is provided in the second isolation cavity 15, and every two portions of the unbalanced power of the first power are transmitted to the second energy absorption element 16 through the fifth strip and are absorbed. The second isolation block 13 can prevent electromagnetic signals between the second strip and the fifth strip from interfering with each other, thereby improving the electromagnetic performance of the power combining device.

[0032] Furthermore, the third accommodating cavity includes a third combining cavity and a third isolation cavity, which are isolated from each other. The balanced power of the second power is combined into a third power in the third combining cavity and output from the output terminal, while the unbalanced power of the second power is absorbed in the third isolation cavity. Specifically, a third isolation block 17 is provided in the third accommodating cavity 8, which divides the third accommodating cavity 8 into a third combining cavity 18 and a third isolation cavity 19. The third strip line is provided in the third combining cavity 18, where the balanced power of the second power is combined into a third power and output from the output terminal. A sixth strip line is provided in the third isolation cavity 19, through which the unbalanced power of the second power is transmitted to the third energy absorption element 20 and absorbed. The third isolation block 17 can prevent electromagnetic signals from interfering with each other between the third strip line and the sixth strip line, thereby improving the electromagnetic performance of the power combining device.

[0033] Furthermore, the power combining device is equipped with a fan, which can simultaneously dissipate heat from the first, second, and third accommodating cavities. Specifically, the main body 2 is equipped with a fan 21, a first exhaust port 22, and a second exhaust port 23. The fan 21 is located on the side of the main body 2 away from the input end 4. The main body 2 has multiple air inlets (not shown in the figure) at positions corresponding to the fan 21. Some of the air inlets communicate with the first accommodating cavity 6, and the other part communicates with the third accommodating cavity 8. The first exhaust port 22 is located at the end of the lower cover plate 3 away from the fan 21 and communicates with the first accommodating cavity 6. The second exhaust port 23 is located at the end of the upper cover plate 1 away from the fan 21 and communicates with the second accommodating cavity 7. When dissipating heat from the first accommodating cavity 6, the airflow path is: fan 21 → air inlet → first accommodating cavity 6 → first exhaust port 22. When dissipating heat from the second accommodating cavity 7 and the third accommodating cavity 8, the airflow path is: fan 21 → air inlet → third accommodating cavity 8 → second channel → second accommodating cavity 7 → second exhaust port 23. Compared to traditional technologies, the power combining device of this invention, through the arrangement of the upper cover plate, lower cover plate, body 2, and fan 21, not only dissipates heat through the upper cover plate 1 and lower cover plate 3, but also increases the heat transfer area of ​​the body 2 to facilitate heat dissipation, and can also be forced to dissipate heat through the fan 21, resulting in good heat dissipation effect. At the same time, its multi-cavity arrangement divides the single large cavity of the existing power combining device into several small cavities, thereby significantly reducing the cross-sectional size of the air flow channel and greatly increasing the air flow speed, thus making heat dissipation more convenient.

[0034] In summary and in combination Figures 6 to 10 It can be seen that the power combining device of this utility model is small in size, which is conducive to the miniaturization of the equipment. It also has good heat dissipation and electromagnetic performance, making it suitable for widespread use.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power combining device comprising a power combining device body, characterized by: It also includes an X-type input terminal, a Y-type first receiving cavity, a Z-type second receiving cavity, a third receiving cavity, and an output terminal, wherein X:Y:Z = 4:2:1, and Z ≥ 2. The first receiving cavity is located on one side of the power combining device body, and the second and third receiving cavities are located on the other side of the power combining device body. The first receiving cavities are isolated from each other, and the second receiving cavities are isolated from each other. The power at the input terminal is combined into a first power in the first receiving cavity, the first power is combined into a second power in the second receiving cavity, and the second power is combined into a third power in the third receiving cavity and output from the output terminal.

2. The power combining device according to claim 1, characterized in that: The first receiving cavity includes a first combining cavity and a first isolation cavity, which are isolated from each other. The balanced power at the input terminal is combined into a first power in the first combining cavity, and the unbalanced power at the input terminal is absorbed in the first isolation cavity.

3. The power combining device of claim 2, wherein: The second receiving cavity includes a second combining cavity and a second isolation cavity, which are isolated from each other. The balanced power of the first power is combined into the second power in the second combining cavity, and the unbalanced power of the first power is absorbed in the second isolation cavity.

4. The power combining device of claim 3, wherein: The third accommodating cavity includes a third combining cavity and a third isolation cavity, which are isolated from each other. The balanced power of the second power is combined into the third power in the third combining cavity and output from the output terminal, while the unbalanced power of the second power is absorbed in the third isolation cavity.

5. The power combining device of any one of claims 1 to 4, wherein: The power combining device is equipped with a fan, which can simultaneously dissipate heat from the first, second, and third accommodating cavities.

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