A high-density radio frequency cable module that is easy to install

Abstract

This invention discloses a high-density radio frequency (RF) cable module that is easy to install, including a chiller and multiple RF connectors. A mounting bracket is inserted into one side of the chiller, and a junction box is fixed on the mounting bracket. The outline of the junction box is configured to fit the internal space of the chiller. Several SMA through-wall female connectors are fixed on the junction box, arranged in a dense array to provide a high-density RF signal transmission channel. The RF connectors include connecting wires and RF cable plugs, and the RF cable plugs mate with the SMA through-wall female connectors. This invention improves the integration and scalability of the RF channel in a superconducting quantum computing system, and ensures that the module has good physical stability and reliability in low-temperature environments.

Description

Technical Field

[0001] This utility model belongs to the field of quantum information technology, and in particular relates to a high-density radio frequency line module that is easy to install. Background Technology

[0002] In superconducting quantum computing systems, qubits require radio frequency (RF) transmission lines for control. These RF transmission lines are installed in a refrigerator and provide RF transmission signals from room temperature to low temperature for the control of the qubits.

[0003] Currently, most cryogenic refrigerators use SMA connectors for their RF transmission lines, and all components are SMA compliant. Following standard SMA mounting, the spacing between all cables is 13mm. On a 400-type cryogenic refrigerator's wiring reel, only 20 RF cables can be installed per reel. The total number of RF cables that can be installed within the entire cryogenic refrigerator is no more than 50. This limitation severely restricts the number of qubits in superconducting quantum computing. Furthermore, since all filters and cables within the cryogenic refrigerator are standardized to SMA interfaces, replacing the entire cryogenic RF system is costly and impractical. Therefore, there is an urgent need for a solution that can significantly improve RF cable installation density while remaining compatible with existing SMA device specifications. Utility Model Content

[0004] The purpose of this invention is to provide a high-density radio frequency line module that is easy to install, thereby solving the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model discloses a high-density radio frequency (RF) cable module that is easy to install. It includes a chiller and multiple RF connectors. A mounting bracket is inserted into one side of the chiller, and a junction box is fixed on the bracket. The outline of the junction box is configured to fit the internal space of the chiller. Several SMA through-wall female connectors are fixed on the junction box, arranged in a dense array to provide a high-density RF signal transmission channel. The RF connector includes a connecting cable and an RF cable plug. The RF cable plug mates with the SMA through-wall female connector to fix the RF connector on the junction box.

[0006] Preferably, a plurality of retaining plates are fixedly connected to the periphery of the RF cable plug, and a retaining groove is formed between every two retaining plates. Positioning grooves are provided on both sides of the SMA through-wall straight-through female connector. Positioning blocks are provided in the positioning grooves. An elastic buckle is fixedly connected to one side of the positioning block. A retaining block is fixedly provided above the elastic buckle. An adjustment groove is provided on one surface of the retaining block. A plurality of springs are fixedly connected to both sides of the inner wall of the adjustment groove. A baffle is fixedly connected to one end of each spring. Support plates are fixedly provided on both sides of the SMA through-wall straight-through female connector.

[0007] Preferably, the center distance between the SMA through-wall straight-through female connectors is less than their standard installation spacing, and the center distance is less than or equal to mm, so as to increase the number of RF channels per unit area of ​​the junction box.

[0008] Preferably, the junction box is made of a high thermal conductivity metal material, which is oxygen-free copper, to ensure the thermal stability of the RF cable module in a low-temperature environment.

[0009] Preferably, the connection between the RF cable plug and the SMA through-wall straight-through female connector is equipped with a dedicated installation tool, which is a custom-made wrench.

[0010] Preferably, the positioning block is inserted into the positioning slot, the RF cable plug is threaded into the SMA through-wall straight female connector, and the size of the locking block matches the size of the locking slot.

[0011] Preferably, the working end of the custom wrench is precisely matched to the shape of the nut of the SMA through-wall straight-through female head, and its outer diameter is smaller than the center distance between the SMA through-wall straight-through female heads.

[0012] This utility model has the following beneficial effects: 1. This utility model improves the integration and scalability of radio frequency channels in superconducting quantum computing systems. Specifically, it uses a junction box adapted to the internal space of the device and multiple SMA through-wall straight-through female connectors arranged in a dense array with a spacing smaller than the standard. This allows for the integration of more radio frequency channels per unit area while maintaining full compatibility with existing device specifications. It breaks through the bottleneck of the number of quantum bits caused by the standard installation spacing limitation, eliminates the need to replace other types of connectors, and saves costs. 2. This utility model can ensure that the module has good physical stability and reliability in low temperature environment. Specifically, the wiring plate is made of high thermal conductivity oxygen-free copper and fixed on the mounting frame to form a rigid integral module. The high thermal conductivity material ensures thermal management at extremely low temperatures, and the modular structure improves the overall mechanical strength, ensuring long-term stable operation of the system in complex low temperature environment. 3. This utility model enables convenient installation and reliable maintenance of high-density modules. Specifically, it sets up a wiring frame that connects to the side interface of the equipment and provides a custom wrench, so that the entire module can be quickly assembled and disassembled as a whole through lateral loading. The custom wrench solves the problem of insufficient operating space in high-density layout, thereby improving installation efficiency and maintenance convenience.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the connection between the radio frequency cable and the SMA connector of this utility model; Figure 4 This is a schematic diagram of the exploded structure of this utility model; Figure 5 This is a cross-sectional view of the card block structure of this utility model; Figure 6 This is a schematic diagram of the working process of this utility model.

[0016] The components represented by each number in the attached diagram are as follows: 1. Junction panel; 2. SMA through-wall straight female connector; 3. Custom wrench; 4. RF cable plug; 5. Clamping plate; 6. Elastic buckle; 7. Positioning block; 8. Clamping block; 9. Positioning groove; 10. Support plate; 11. Adjustment groove; 12. Spring; 13. Baffle. Detailed Implementation

[0017] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Please see Figures 1-6 As shown, this utility model is a high-density radio frequency (RF) cable module that is easy to install, including a chiller and multiple RF connectors. A mounting bracket is inserted into one side of the chiller, and a junction box 1 is fixed on the mounting bracket. The outline of the junction box 1 is configured to fit the internal space of the chiller. The shape of the junction box 1 needs to be customized according to the internal space outline of the target installation equipment (such as a specific model of chiller) to maximize the use of space. The junction box 1 is made of oxygen-free copper material and is subjected to nickel-free gold plating surface treatment to ensure the thermal stability of the RF cable module in low-temperature environments. A number of SMA through-wall straight-through female connectors 2 are fixedly provided on the junction box 1. The SMA through-wall straight-through female connectors 2 are arranged in a dense array on the junction box 1. The center distance between the SMA through-wall straight-through female connectors 2 is less than their standard installation spacing, and the center distance is less than or equal to 11mm, so as to increase the number of RF channels per unit area of ​​the junction box 1 and provide a high-density RF signal transmission channel. The RF connector includes a connecting wire and an RF wire plug 4. The RF wire plug 4 is threaded with the SMA through-wall straight-through female connector 2 and is used to fix the RF connector on the junction box 1. The connection between the RF cable plug 4 and the SMA through-wall straight-through female connector 2 is equipped with a special installation tool, namely a custom wrench 3. Due to the extremely small spacing between the connectors, conventional tools cannot be inserted for operation. Therefore, it is necessary to use the special custom wrench 3. The working end of the custom wrench 3 is specially designed. Its shape is thin and precisely matches the shape of the nut of the SMA through-wall straight-through female connector 2. Furthermore, the outer diameter of the custom wrench 3 is smaller than the center distance between the SMA through-wall straight-through female connectors 2, which can tighten a single connector in a confined space and ensure that the applied torque meets the standard requirements.

[0020] Several locking plates 5 are fixedly connected to the sides of the RF cable plug 4, forming a slot between every two locking plates 5. Positioning slots 9 are provided on both sides of the SMA through-wall straight female connector 2. Positioning blocks 7 are inserted into the positioning slots 9. Positioning blocks 7 are provided in the positioning slots 9. Positioning blocks 7 are used for positioning and installation of elastic buckles 6 in conjunction with positioning slots 9. Elastic buckles 6 are fixedly connected to one side of the positioning blocks 7. The elastic buckles 6 are designed to be able to be pried open to both sides. After the RF cable plug 4 is threadedly connected to the SMA through-wall straight female connector 2, the elastic buckles 6 can be installed on the side of the SMA through-wall straight female connector 2. A locking block 8 is fixedly provided above the elastic buckles 6. After the RF cable plug 4 is connected, the locking block 8 can be inserted into the slot to limit the RF cable plug 4 and prevent the RF cable plug 4 from loosening due to long-term vibration. The card block 8 has an adjustment groove 11 on one surface. Several springs 12 are fixedly connected to both sides of the inner wall of the adjustment groove 11. A baffle 13 is fixedly connected to one end of the spring 12. A support plate 10 is fixedly provided on both sides of the SMA through-wall straight female connector 2. The size of the card block 8 matches the size of the card slot. Since the RF cable plug 4 needs to be screwed on when connected, when the position of the card block 8 does not correspond to the position of the card slot, the adjustment groove 11 corresponds to the position of the card plate 5.

[0021] like Figure 6 As shown, multiple pre-installed junction boxes 1 are fixed to an integral mounting frame according to the design spacing inside the chiller. All RF connectors can be pre-connected on the mounting frame. Finally, the entire module is pushed into the designated position inside the equipment in one go through the side loading interface reserved on the chiller. Then, the side loading mounting frame can be removed to complete the installation. The reverse operation can be performed to remove the entire module, which is convenient for maintenance and upgrades.

[0022] Working principle: Based on the shape of each layer inside the refrigerator, a custom-made junction box 1 is designed to match its shape. The standard SMA through-wall straight-through female connector 2 on the custom junction box 1 is precisely spaced to 11mm. High thermal conductivity oxygen-free copper with gold plating is used to ensure the module's thermal stability and reliability in extremely low-temperature environments. The junction box 1 has an internal SMA thread 1 / 4-36UNS-2B. The RF cable connector 4 is connected to the SMA through-wall straight-through female connector 2, and then tightened using a custom-made wrench 3. After fixing the RF cable connector 4, the elastic clip 6 is pried open to both sides, allowing the positioning block 7 to be inserted into the positioning groove 9, thus fixing the elastic clip 6 in place of the SMA through-wall straight-through female connector 2. On the wall-mounted female connector 2, the support plate 10 supports the elastic buckle 6. When the position of the locking block 8 corresponds to the position of the slot, the locking block 8 is inserted into the slot to limit the RF cable plug 4 and prevent it from loosening due to long-term vibration of the refrigerator. If the locking block 8 does not correspond to the position of the slot, the position of the locking plate 5 corresponds to the position of the adjustment groove 11. The locking plate 5 is inserted between the two baffles 13, and the spring 12 supports the baffles 13 so that they abut against the locking plate 5. Although the spring 12 can be compressed, the limitation of the adjustment groove 11 makes the loosening range of the RF cable plug 4 extremely small even if it becomes loose, and it will not affect the transmission signal of the RF cable plug 4. After the RF cable plug 4 is connected, fix the junction box 1 on the side load mounting bracket of the refrigerator. Then, push the side load mounting bracket into the designated position inside the equipment in one go through the lateral loading interface reserved on the refrigerator. Then remove the side load mounting bracket. All RF cable modules are now fixed on the refrigerator.

[0023] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-density radio frequency cable module that is easy to install, comprising a chiller and multiple radio frequency connectors, wherein a mounting bracket is inserted into one side of the chiller, and a junction box (1) is fixed on the mounting bracket, characterized in that: The outline of the junction box (1) is configured to fit the internal space of the refrigerator. Several SMA through-wall straight female connectors (2) are fixed on the junction box (1). The SMA through-wall straight female connectors (2) are arranged in a dense array on the junction box (1) to provide a high-density radio frequency signal transmission channel. The RF connector includes a connecting wire and an RF wire plug (4). The RF wire plug (4) is used to cooperate with the SMA through-wall straight-through female connector (2) to fix the RF connector on the junction box (1).

2. The high-density RF cable module of claim 1, wherein, The RF cable plug (4) is fixedly connected to several clamping plates (5) on its periphery, and a slot is formed between every two clamping plates (5). The SMA through-wall straight-through female connector (2) is provided with positioning slots (9) on both sides. A positioning block (7) is provided in the positioning slot (9). An elastic buckle (6) is fixedly connected to one side of the positioning block (7). A clamping block (8) is fixedly provided above the elastic buckle (6). An adjustment slot (11) is provided on one surface of the clamping block (8). Several springs (12) are fixedly connected to both sides of the inner wall of the adjustment slot (11). A baffle (13) is fixedly connected to one end of the spring (12). A support plate (10) is fixedly provided on both sides of the SMA through-wall straight-through female connector (2).

3. The high-density RF cable module of claim 1, wherein, The center distance between the SMA through-wall straight-through female connectors (2) is less than their standard installation spacing, and the center distance is less than or equal to 11mm, so as to increase the number of radio frequency channels per unit area of ​​the junction box (1).

4. The high-density RF cable module of claim 1, wherein, The junction box (1) is made of a high thermal conductivity metal material, which is oxygen-free copper, to ensure the thermal stability of the radio frequency line module in a low temperature environment.

5. The high-density RF cable module of claim 1, wherein, The connection between the RF cable plug (4) and the SMA through-wall straight-through female connector (2) is equipped with a special installation tool, which is a custom wrench (3).

6. The high-density RF cable module of claim 2, wherein, The positioning block (7) is inserted into the positioning slot (9), the radio frequency cable plug (4) is threaded into the SMA through-wall straight female connector (2), and the size of the card block (8) matches the size of the card slot.

7. The high-density RF cable module of claim 5, wherein, The working end of the custom wrench (3) is precisely matched with the nut shape of the SMA through-wall straight female head (2), and its outer diameter is smaller than the center distance between the SMA through-wall straight female heads (2).

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