Inner conductor assembly, coaxial structure and power synthesis device

Abstract

The utility model relates to the technical field of electromagnetic waves, in particular to an inner conductor assembly, a coaxial structure and a power synthesis device, the inner conductor assembly comprises a first conductor, a second conductor and at least two third conductors, the second conductor and the third conductors are connected with the first conductor, the sum of the lengths of the first conductor and the second conductor is lambda / 4, and the sum of the lengths of the first conductor and the second conductor is lambda / 4. An inner conductor assembly capable of directly transferring heat to an outer conductor is provided, the coaxial structure comprises the inner conductor assembly, and the power synthesis device comprises the coaxial structure.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic waves, in particular to an inner conductor component, a coaxial structure and a power synthesis device. Background Art

[0002] With the development of microwave technology, its application is becoming more and more extensive. Its application fields include mobile communications, radar, satellite communications and electronic countermeasures. At the same time, microwave technology also has great room for development in the industrial field, such as microwave drying, sewage treatment and other technical applications, and its application prospects are very broad.

[0003] As an important device in the microwave transmission system, the power synthesizer is a device that combines the energy of two or more microwave input signals into one output signal energy. It can also be used in reverse to distribute the energy of one input signal into multiple signal energy outputs. In this case, it is a power distribution device.

[0004] The coaxial structure generally includes an inner conductor component and an outer conductor, and a medium between the inner conductor component and the outer conductor.

[0005] In the coaxial structure, the inner conductor assembly needs to be fixed in the accommodating cavity of the outer conductor to ensure that the inner conductor assembly and the outer conductor are spaced and coaxial. However, due to the influence of the structure, the inner conductor assembly can only be fixed on the outer conductor. In order not to affect the electromagnetic transmission performance, the inner conductor assembly and the outer conductor of the coaxial structure of the prior art need to be insulated, so an insulating member 8 is set between the inner conductor assembly and the outer conductor (see Figure 1 ), the insulating part 8 prevents the inner conductor assembly from directly contacting the outer conductor, so that the heat of the inner conductor assembly cannot be directly transferred to the outer conductor, reducing the heat transfer efficiency; in addition, if the insulating performance of the insulating part 8 fails, the inner conductor assembly and the outer conductor will be electrically connected, which will seriously affect the electromagnetic transmission performance and even burn the equipment. The above shortcomings have seriously restricted its application scenarios. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an inner conductor component which can directly transfer heat to an outer conductor.

[0007] Another object of the present invention is to provide a coaxial structure which adopts the above inner conductor assembly.

[0008] Another object of the present utility model is to provide a power synthesis device, which adopts the above coaxial structure.

[0009] The purpose of the utility model is achieved through the following technical solutions:

[0010] An inner conductor assembly comprises a first conductor, a second conductor and at least two third conductors, wherein the second conductor and the third conductor are both connected to the first conductor, and the sum of the lengths of the first conductor and the second conductor is λ / 4.

[0011] Furthermore, the third conductors are arranged on the same plane.

[0012] Furthermore, the third conductors are evenly arranged.

[0013] Furthermore, the plane is perpendicular to the first conductor and the second conductor.

[0014] Furthermore, the first conductor and the second conductor are coaxial.

[0015] Furthermore, a first step is provided between the second conductor and the first conductor.

[0016] Furthermore, a second step is provided between the third conductor and the first conductor.

[0017] Furthermore, the first conductor is provided with a channel for heat dissipation.

[0018] A coaxial structure comprises the inner conductor assembly and an outer conductor, wherein the inner conductor assembly is spaced apart from the outer conductor and is coaxially arranged.

[0019] A power synthesis device comprises the coaxial structure.

[0020] The utility model has the following advantages:

[0021] 1. In the prior art, if the insulation performance of the insulating part fails, the inner conductor assembly and the outer conductor will be electrically connected through the failed insulating part, which will seriously affect the electromagnetic transmission performance and even burn the equipment; however, the utility model sets the conductor length so that the inner conductor assembly and the outer conductor can be directly and electrically connected, so that the heat of the inner conductor assembly can be directly transferred to the outer conductor, which improves the heat transfer efficiency, is more conducive to heat dissipation, and will not affect the electromagnetic transmission performance, fundamentally avoiding the above risks;

[0022] 2. It is no longer necessary to install insulating parts, which reduces the number of parts of the equipment, saves costs, and is conducive to the lightweighting of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the implementation of the utility model, the following is a brief introduction to the drawings required for use in the implementation. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0024] Figure 1 It is a cross-sectional schematic diagram of a coaxial structure in the prior art;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the inner conductor assembly of the utility model;

[0026] Figure 3 for Figure 2 Schematic cross-section diagram of

[0027] Figure 4 It is a three-dimensional structural schematic diagram of the coaxial structure of the utility model;

[0028] Figure 5 for Figure 4 Schematic cross-section diagram of

[0029] Figure 6 It is an equivalent circuit diagram of the coaxial structure of the utility model in the electromagnetic wave transmission system;

[0030] In the figure: 1-first conductor, 2-second conductor, 3-third conductor, 4-first step, 5-second step, 6-channel, 7-outer conductor, 8-insulating member. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] like Figure 2 and Figure 3 As shown, an inner conductor assembly includes a first conductor 1, a second conductor 2 and at least two third conductors 3, wherein the second conductor 2 and the third conductor 3 are connected to the first conductor 1; in order to realize that the heat of the inner conductor assembly can be directly transferred to the outer conductor 7, the inner conductor assembly and the outer conductor 7 need to be directly in contact or directly connected, which will cause the inner conductor assembly and the outer conductor 7 to be electrically connected, thereby seriously affecting the electromagnetic transmission performance. In order to avoid the above situation, the sum of the lengths of the first conductor 1 and the second conductor 2 is λ / 4 (λ is the wavelength of the electromagnetic wave), so that the inner conductor assembly and the outer conductor 7 can be directly in contact or directly connected without affecting the electromagnetic transmission performance, thereby realizing the direct transfer of heat from the inner conductor assembly to the outer conductor 7. The relevant principles are detailed below.

[0036] Furthermore, in order to achieve better electromagnetic transmission performance, the third conductors 3 are arranged on the same plane.

[0037] Furthermore, in order to ensure the consistency of the amplitude and phase of the electromagnetic waves of each branch, the third conductors 3 are evenly arranged.

[0038] Furthermore, in order to achieve better electromagnetic transmission performance, the plane is perpendicular to the first conductor 1 and the second conductor 2 .

[0039] Furthermore, in order to achieve better electromagnetic transmission performance, the first conductor 1 and the second conductor 2 are coaxial.

[0040] Furthermore, in order to achieve better impedance matching and facilitate assembly, a first step 4 is provided between the second conductor 2 and the first conductor 1, and the first step 4 is provided close to the first conductor 1. In this embodiment, the size of the second conductor 2 is smaller than that of the first conductor 1, and the size difference can form the first step 4 at the connection between the second conductor 2 and the first conductor 1, which is convenient for welding and assembly between the second conductor 2 and the first conductor 1. At the same time, the first step 4 can also achieve better impedance matching between the second conductor 2 and the first conductor 1.

[0041] Furthermore, in order to achieve better impedance matching and facilitate assembly, a second step 5 is provided between the third conductor 3 and the first conductor 1 , and the second step 5 is provided close to the first conductor 1 .

[0042] Furthermore, in order to enhance the heat dissipation effect, the first conductor 1 is provided with a channel 6 for heat dissipation, and a cooling liquid or a cooling gas is provided in the channel 6 .

[0043] like Figure 4 and Figure 5 As shown, a coaxial structure includes the inner conductor assembly and the outer conductor 7. The inner conductor assembly is spaced apart from and coaxially arranged with the outer conductor 7. The first conductor 1 is directly and electrically connected to the outer conductor 7.

[0044] A power synthesis device comprises the coaxial structure.

[0045] It should be pointed out that the coaxial structure of the utility model has an equivalent circuit in the electromagnetic wave transmission system as shown in FIG. Figure 6 As shown, according to the theory described in the first and second paragraphs on page 15 of reference [1], when AB=λ / 4 or A'B'=λ / 4, AA' is open-circuited, so its electromagnetic transmission performance will not be affected.

[0046] References

[0047] [1] Liu Xueguan, Guo Huiping. Microwave Technology and Antennas (3rd Edition). Xi’an: Xidian University Press, 2012.

[0048] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An inner conductor assembly, characterized in that: The invention comprises a first conductor (1), a second conductor (2) and at least two third conductors (3), wherein the second conductor (2) and the third conductor (3) are both connected to the first conductor (1), and the sum of the lengths of the first conductor (1) and the second conductor (2) is λ / 4.

2. The inner conductor assembly according to claim 1, characterized in that: The third conductors (3) are arranged on the same plane.

3. The inner conductor assembly according to claim 2, characterized in that: The third conductors (3) are evenly arranged.

4. The inner conductor assembly according to claim 3, characterized in that: The plane is perpendicular to the first conductor (1) and the second conductor (2).

5. The inner conductor assembly according to claim 4, characterized in that: The first conductor (1) and the second conductor (2) are coaxial.

6. The inner conductor assembly according to claim 5, characterized in that: A first step (4) is provided between the second conductor (2) and the first conductor (1).

7. The inner conductor assembly according to claim 6, characterized in that: A second step (5) is provided between the third conductor (3) and the first conductor (1).

8. The inner conductor assembly according to any one of claims 1 to 7, characterized in that: The first conductor (1) is provided with a channel (6) for heat dissipation.

9. A coaxial structure, characterized in that: The inner conductor assembly comprises the inner conductor assembly according to any one of claims 1 to 8, further comprising an outer conductor (7), wherein the inner conductor assembly is spaced apart from and coaxially arranged with the outer conductor (7).

10. A power synthesis device, characterized in that: Includes the coaxial structure described in claim 9.

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