A multi-band multi-pole multi-throw waveguide radio frequency switch structure and processing method

Abstract

The present invention belongs to the technical field of waveguide microwave switch structure, and discloses a multi-band multi-pole multi-throw waveguide radio frequency switch structure and processing method, wherein the structure comprises a radio frequency cavity, a radio frequency cover plate, a rotor assembly and a driving mechanism for driving the rotor assembly to rotate, wherein the rotor assembly is rotatably arranged in the radio frequency cavity, the rotor assembly is provided with a plurality of radio frequency transmission channels, the radio frequency cavity is provided with a plurality of waveguide ports, and the radio frequency cover plate is fixedly connected to the radio frequency cavity. The present invention greatly improves the integration of products, realizes the radio frequency switching function of dual-band double-pole four-throw, and greatly reduces the use space and saves costs compared with traditional waveguide switches.

Description

Technical Field

[0001] The invention belongs to the technical field of waveguide microwave switch structures, and in particular relates to a multi-band multi-pole multi-throw waveguide radio frequency switch structure and a processing method thereof. Background Art

[0002] Waveguide microwave switches are mainly used for the transmission of microwave signals in satellite communication systems, switching of transmission channels, and link realization of complex multifunctional components. Their main function is to select link transmission channels by switching RF channels, thereby greatly improving the reliability of the link system while realizing complex signal transmission links.

[0003] With the development of aerospace technology, aerospace resources are becoming increasingly scarce, and the development of systems towards integration and miniaturization has become a development trend. As a key component of the communication system, the miniaturization, integration and lightweight of waveguide microwave switches have an important impact on the development of the entire system.

[0004] The existing waveguide microwave switches are mainly single-band double-pole double-throw types, which have few functions and a wide variety of types, making it difficult to meet the requirements of miniaturization, integration, lightness and complex space environments, while greatly increasing production costs. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a multi-band multi-pole multi-throw waveguide RF switch structure and a processing method to solve the problems of existing waveguide microwave switches, such as few functions, numerous types, difficulty in meeting the requirements of miniaturization, integration, lightweight and complex space environment, and high production cost.

[0006] In order to achieve the invention objective of this application, the present invention provides the following technical solutions:

[0007] A multi-band multi-pole multi-throw waveguide radio frequency switch structure comprises a radio frequency cavity, a radio frequency cover, a rotor assembly and a driving mechanism for driving the rotor assembly to rotate. The rotor assembly is rotatably arranged in the radio frequency cavity, the rotor assembly is provided with a plurality of radio frequency transmission channels, the radio frequency cavity is provided with a plurality of waveguide openings, and the radio frequency cover is fixedly connected to the radio frequency cavity.

[0008] Furthermore, as a preferred technical solution, the rotor assembly includes at least two rotors of different frequency bands, the rotors are coaxially fixed and coaxially rotated under the action of a driving mechanism, and the RF cavity is provided with a plurality of groups of waveguide openings matching the number of rotors.

[0009] Furthermore, as a preferred technical solution, the rotor assembly includes two rotors of different frequency bands, namely a first rotor and a second rotor, the first rotor and the second rotor are respectively provided with four RF transmission channels, and the RF cavity is provided with two groups of waveguide ports, each group of waveguide ports matches the RF transmission channel of one rotor, and each group of waveguide ports includes six waveguide ports.

[0010] Further, as a preferred technical solution, the first rotor includes a first upper cavity and a first lower cavity, the first upper cavity and the first lower cavity are positioned by pins and assembled and fixed by screws, and the second rotor includes a second upper cavity and a second lower cavity, the second upper cavity and the second lower cavity are positioned by pins and assembled by screws.

[0011] Furthermore, as a preferred technical solution, it also includes two bearings, which are respectively fixed to the bottom of the RF cavity and the inner wall of the RF cover plate, and the two ends of the rotor assembly are respectively fixed to the bearings.

[0012] A method for processing a multi-band multi-pole multi-throw waveguide radio frequency switch structure comprises the following steps:

[0013] Step 1: First, the internal features of each rotor in the rotor assembly are processed separately;

[0014] Step 2: Assemble the rotors with processed internal features by screws to obtain a rotor assembly, so that each rotor can rotate coaxially and synchronously;

[0015] Step 3: Process the external features of each rotor separately;

[0016] Step 4: Opening a waveguide opening on the RF cavity corresponding to the RF transmission channel of the rotor assembly;

[0017] Step 5: Install the rotor assembly into the RF cavity, fix both ends of the rotor assembly to the bearings respectively, and fix the RF cover to the RF cavity.

[0018] Further, as a preferred technical solution, in step 1, each rotor includes an upper cavity and a lower cavity, and firstly, the internal features of the upper cavity and the lower cavity of each rotor are processed respectively;

[0019] In step 2, the upper cavity and the lower cavity with processed internal features are positioned by pins and assembled and fixed by screws to obtain each rotor, and each rotor realizes coaxial synchronous rotation.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention adopts a design of integrating at least two rotors into one component, thereby integrating the functions that originally required two or more switches in different frequency bands to achieve into one switch, thereby greatly improving the integration of the product and realizing the dual-band double-pole four-throw RF switching function. Compared with traditional waveguide switches, it greatly reduces the usage space and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the present invention;

[0024] Figure 3 is a schematic diagram of the radio frequency channel structure of the present invention;

[0025] Figure 4 is a schematic diagram of the structure of the rotor assembly of the present invention;

[0026] Figure 5 The radio frequency switching principle of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 6 The radio frequency switching principle of the present invention is shown in FIG. Figure 2 .

[0028] The names corresponding to the reference numerals in the figure are: 1. RF cavity, 2. RF cover plate, 3. rotor assembly, 4. bearing. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-Figure 3 As shown, a multi-band multi-pole multi-throw waveguide RF switch structure provided by an embodiment of the present invention includes an RF cavity 1, an RF cover plate 2, a rotor assembly 3, and a driving mechanism (not shown in the figure) for driving the rotor assembly 3 to rotate. The rotor assembly 3 is rotatably arranged in the RF cavity 1. The rotor assembly 3 is provided with multiple RF transmission channels. The RF cavity 1 is provided with multiple waveguide ports. The RF cover plate 2 is fixedly connected to the RF cavity 1. It should be noted that the driving mechanism is an existing structure. For example, a motor is one of the common driving mechanisms. Its specific structure and working principle are common knowledge to those skilled in the art, so it will not be described in detail.

[0033] Preferably, the rotor assembly 3 of this embodiment includes at least two rotors of different frequency bands, the rotors are coaxially fixed and coaxially rotated under the action of a driving mechanism, and the RF cavity 1 is provided with a plurality of groups of waveguide openings matching the number of rotors.

[0034] Preferably, the rotor assembly 3 of this embodiment includes two rotors of different frequency bands, namely a first rotor and a second rotor. The first rotor and the second rotor are respectively provided with four RF transmission channels. The RF cavity 1 is provided with two groups of waveguide ports, each group of waveguide ports matches the RF transmission channel of one rotor, and each group of waveguide ports includes six waveguide ports.

[0035] Preferably, the first rotor of this embodiment includes a first upper cavity and a first lower cavity, the first upper cavity and the first lower cavity are positioned by pins and assembled and fixed by screws, and the second rotor includes a second upper cavity and a second lower cavity, the second upper cavity and the second lower cavity are positioned by pins and assembled by screws.

[0036] like Figure 4As shown, this embodiment is explained by taking BJ320 as the first rotor and BJ900 as the second rotor as an example. It should be noted that BJ320 and BJ900 are waveguide models of two different frequency bands, which are used to transmit microwave signals of corresponding frequency bands. They belong to the prior art, so their specific structure and working principle will not be described in detail. Of course, the first rotor and the second rotor can also be other frequency band models. When the waveguide RF switch is working, the rotor assembly will rotate with the driving mechanism (not shown in the figure), and the driving mechanism controls the rotor to rotate to a corresponding angle, so that the RF transmission channel of the rotor is connected to the waveguide port of the RF cavity 1, thereby realizing the opening and switching of the corresponding RF transmission channel, so as to achieve the RF transmission function of double-pole four-throw; in addition, since the rotors of the two frequency bands of BJ320 and BJ900 are coaxially fixed by screws, the two rotors also rotate coaxially and synchronously when rotating, that is, the function of double-pole four-throw switching of dual-band is realized.

[0037] like Figure 5 , Figure 6 As shown, Figure 5 The numbers 1, 2, 3, 4, 5 and 6 are respectively a group of waveguide ports provided on the radio frequency cavity 1. Figure 6 The middle number 7, 8, 9, 10, 11, 12 is another group of waveguide ports. Each time the rotor assembly rotates, two corresponding RF transmission channels are connected. When the rotor assembly rotates to four different angles, the four connection states of the switch are: state 1: 2-3, 5-6, 8-9, 11-12 connected, state 2: 2-1, 5-4, 8-7, 11-10 connected, state 3: 2-6, 5-3, 8-12, 11-9 connected, state 4: 2-4, 5-1, 8-10, 11-7 connected; thus, the dual-band double-pole four-throw switching function is realized. Similarly, more rotors can be set and more RF transmission channels can be set on each rotor, and more waveguide ports matching the RF transmission channels can be set on the RF cavity, so as to realize the multi-band multi-pole multi-throw switching function.

[0038] Preferably, this embodiment further includes two bearings, which are respectively fixed to the bottom of the RF cavity 1 and the inner wall of the RF cover plate 2 , and both ends of the rotor assembly 3 are respectively fixed to the bearings.

[0039] A method for processing a multi-band multi-pole multi-throw waveguide radio frequency switch structure comprises the following steps:

[0040] Step 1: First, the internal features of each rotor in the rotor assembly are processed separately;

[0041] Step 2: Assemble the rotors with processed internal features by screws to obtain a rotor assembly, so that each rotor can rotate coaxially and synchronously;

[0042] Step 3: Process the external features of each rotor separately;

[0043] Step 4: Opening a waveguide opening on the RF cavity corresponding to the RF transmission channel of the rotor assembly;

[0044] Step 5: Install the rotor assembly into the RF cavity, fix both ends of the rotor assembly to the bearings respectively, and fix the RF cover to the RF cavity.

[0045] In step 1, each rotor includes an upper cavity and a lower cavity, and firstly, the internal features of the upper cavity and the lower cavity of each rotor are processed respectively;

[0046] In step 2, the upper cavity and the lower cavity with processed internal features are positioned by pins and assembled and fixed by screws to obtain each rotor, and each rotor realizes coaxial synchronous rotation.

[0047] The present invention adopts the above structure and method to integrate the functions that originally require two or more switches in different frequency bands to achieve into one switch, thereby greatly improving the integration of the product. At the same time, compared with the traditional dual-channel rotor, the present invention can achieve switching of more RF channels, greatly reducing the usage space and saving costs.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-band multi-pole multi-throw waveguide RF switch structure, characterized in that: The invention comprises a radio frequency cavity (1), a radio frequency cover plate (2), a rotor assembly (3), and a driving mechanism for driving the rotor assembly (3) to rotate, wherein the rotor assembly (3) is rotatably arranged in the radio frequency cavity (1), the rotor assembly (3) is provided with a plurality of radio frequency transmission channels, the radio frequency cavity (1) is provided with a plurality of waveguide openings, and the radio frequency cover plate (2) is fixedly connected to the radio frequency cavity (1); The rotor assembly (3) comprises two rotors of different frequency bands, namely a first rotor and a second rotor, the rotors are coaxially fixed and coaxially rotated under the action of a driving mechanism, the first rotor and the second rotor are respectively provided with four radio frequency transmission channels, the radio frequency cavity (1) is provided with two groups of waveguide ports, each group of waveguide ports matches the radio frequency transmission channel of one rotor, and each group of waveguide ports comprises six waveguide ports; The first rotor includes a first upper cavity and a first lower cavity, which are positioned by pins and assembled and fixed by screws. The second rotor includes a second upper cavity and a second lower cavity, which are positioned by pins and assembled and fixed by screws.

2. The multi-band multi-pole multi-throw waveguide RF switch structure according to claim 1, characterized in that: It also includes two bearings, the two bearings being fixed to the bottom of the radio frequency cavity (1) and the inner wall of the radio frequency cover plate (2) respectively, and the two ends of the rotor assembly (3) are respectively fixed to the bearings.

3. A method for processing a multi-band multi-pole multi-throw waveguide RF switch structure according to claim 1 or 2, characterized in that: The following steps are involved: Step 1: First, the internal features of each rotor in the rotor assembly are processed separately; Step 2: Assemble the rotors with processed internal features by screws to obtain a rotor assembly, so that each rotor can rotate coaxially and synchronously; Step 3: Process the external features of each rotor separately; Step 4: Opening a waveguide opening on the RF cavity corresponding to the RF transmission channel of the rotor assembly; Step 5: Install the rotor assembly into the RF cavity, fix both ends of the rotor assembly to the bearings respectively, and fix the RF cover to the RF cavity.

4. The method according to claim 3, characterized in that In step 1, each rotor includes an upper cavity and a lower cavity, and firstly, the internal features of the upper cavity and the lower cavity of each rotor are processed respectively; In step 2, the upper cavity and the lower cavity with processed internal features are positioned by pins and assembled and fixed by screws to obtain each rotor, and each rotor realizes coaxial synchronous rotation.

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