High isolation device for multi-channel transceiving assembly
The multi-channel transceiver assembly, connected by a split-design metal shielding box and plug-in components, solves the problem of insufficient RF signal isolation, achieving high isolation and efficient testing.
Patent Information
- Application Number
- CN202520588530.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-31
AI Technical Summary
In multi-channel RF transceiver components, existing technologies struggle to meet the high isolation requirements for transmitted and received signals, leading to severe signal interference and impacting communication quality and testing efficiency.
The first and second metal shielding boxes, which adopt a split design, respectively house the first and second circuit boards and are directly connected by plug-in components to transmit radio frequency signals. At the same time, shielding grooves and waterproof shielding strips are set inside the metal shielding boxes to improve isolation and protection.
It greatly improves the isolation of radio frequency signals, avoids signal interference, allows reception and transmission to be carried out simultaneously, and improves test efficiency.
Smart Images
Figure CN223928313U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of radio technology, specifically relating to a high isolation device for a multi-channel transceiver assembly. Background Technology
[0002] The isolation of multi-channel RF transceiver components is an important indicator for evaluating the degree of mutual interference between the transmitting and receiving channels in a wireless communication system. Insufficient isolation can lead to communication interruption, data loss, or signal quality degradation. If the operating frequency of one of the transmitting signals in a multi-channel RF signal happens to fall in the receiving frequency band of another signal, the transmitted signal will cause serious interference to the received signal. Even if the out-of-band spurious signals of the transmitted signal fall in the receiving frequency band of other signals, they may still have a significant noise impact.
[0003] Currently, when customers specify a fixed shape and interface, and the volume is limited, multi-channel transceiver components are designed using conventional methods, employing an upper and lower cavity interconnection method. The upper cavity is for receiving, and the lower cavity is for transmitting, with the upper and lower circuit boards fixed in the middle of the housing wall thickness.
[0004] However, this method is difficult to meet the high isolation requirements for transmission and reception. The signal travels back and forth between the upper and lower cavity interfaces through spatial signals. When transmitting, the spurious signals falling into the receiving band cannot be filtered out, which affects the use of the whole system. Moreover, since the receiving and transmitting are in the same box, they cannot be adjusted and tested at the same time. For multi-channel components, the efficiency is very low. Utility Model Content
[0005] This invention provides a high isolation device for a multi-channel transceiver assembly, which aims to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a high isolation device for a multi-channel transceiver assembly, comprising:
[0007] The first metal shielding box contains the first circuit board.
[0008] The second metal shielding box has a second circuit board inside. The second metal shielding box is adapted to be located on the opposite side of the first metal shielding box and connected to the first metal shielding box.
[0009] A plurality of plug-in components are spaced apart between the first circuit board and the second circuit board and connected to the first circuit board and the second circuit board for transmitting radio frequency signals; the plug-in components include a first connector and a second connector, wherein the first connector is adapted to be plugged into the second connector.
[0010] In one possible implementation of the high isolation device for the multi-channel transceiver assembly provided by this utility model, a plurality of metal shielding blocks are further included. Several shielding grooves are formed on the metal shielding blocks. One end of the metal shielding block is connected to the second metal shielding box, and the other end abuts against the first metal shielding box. The shielding groove is suitable for setting the first connector or the second connector.
[0011] In one possible implementation of the high isolation device for multi-channel transceiver components provided by this utility model, the first metal shielding box includes a first box body and a first cover plate. The first cover plate is connected to the first box body, and a first receiving groove is provided between the first box body and the first cover plate. The first circuit board is disposed in the first receiving groove.
[0012] In one possible implementation of the high isolation device for multi-channel transceiver components provided by this utility model, the first receiving slot is opened on the side of the first box body facing the second metal shielding box, and the first cover plate is provided on the side of the first receiving slot facing the second metal shielding box and connected to the first box body; a plurality of first clearance openings are opened on the first cover plate, and the first clearance openings are used to avoid the plug-in components.
[0013] In one possible implementation of the high isolation device for multi-channel transceiver components provided by this utility model, the second metal shielding box includes a second box body and a second cover plate. The second cover plate is connected to the second box body, and a second receiving groove is provided between the second box body and the second cover plate. The second circuit board is disposed in the second receiving groove.
[0014] In one possible implementation of the high isolation device for multi-channel transceiver components provided by this utility model, the second receiving slot is opened on the side of the second housing facing the first metal shielding box, and the second cover plate is provided on the side of the second receiving slot facing the first metal shielding box and connected to the second housing; a plurality of second clearance openings are opened on the second cover plate, and the second clearance openings are used to avoid the plug-in components.
[0015] In one possible implementation of the high isolation device for multi-channel transceiver components provided by this utility model, the second metal shielding box further includes a waterproof shielding strip. An annular sealing groove is provided on the side of the second box body facing the first metal shielding box. The annular sealing groove is located on the outside of the second cover plate. The waterproof shielding strip is embedded in the annular sealing groove and is adapted to abut against the first box body.
[0016] In one possible implementation of the high isolation device for multi-channel transceiver components provided by this utility model, a plurality of fasteners are further included. The plurality of fasteners are spaced apart along the outer periphery of the first metal shielding box, and the fasteners pass through the first metal shielding box and are connected to the second metal shielding box.
[0017] The advantages of the high isolation device for multi-channel transceiver components provided by this utility model are as follows: Compared with the prior art, the high isolation device for multi-channel transceiver components provided by this utility model has the first circuit board and the second circuit board respectively located in the first metal shielding box and the second metal shielding box, and directly connected by plug-in components to transmit radio frequency signals. The spatial signals are difficult to interfere with each other in the different metal shielding boxes, which greatly improves the isolation. At the same time, the separate design of the first metal shielding box and the second metal shielding box makes the receiving and transmitting debugging and testing independent of each other and can be carried out at the same time, which effectively improves the testing efficiency. Attached Figure Description
[0018] Figure 1 A three-dimensional structural schematic diagram of the high isolation device for a multi-channel transceiver assembly provided in this embodiment of the utility model;
[0019] Figure 2 A partially exploded structural diagram of the first metal shielding box of the high isolation device for the multi-channel transceiver assembly provided in this embodiment of the utility model;
[0020] Figure 3 A partially exploded structural diagram of the second metal shielding box of the high isolation device for the multi-channel transceiver assembly provided in this embodiment of the utility model;
[0021] Figure 4 for Figure 3 Enlarged view of part A in the image;
[0022] Explanation of reference numerals in the attached figures:
[0023] 11. First housing; 12. First cover plate; 121. First clearance opening; 13. First circuit board; 14. First connector; 21. Second housing; 22. Second cover plate; 221. Second clearance opening; 23. Second circuit board; 24. Second connector; 25. Metal shielding block; 26. Waterproof shielding strip; 30. Fastener. Detailed Implementation
[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0025] The technical solutions of the embodiments of this application 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 application, and not all of them. The following description of at least one exemplary embodiment is actually illustrative only and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0028] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0029] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.
[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.
[0031] Please refer to the following: Figures 1 to 4 The high isolation device for a multi-channel transceiver assembly provided by this utility model will now be described. The high isolation device for a multi-channel transceiver assembly includes a first metal shielding box, a second metal shielding box, and several plug-in components. The first metal shielding box contains a first circuit board 13; the second metal shielding box contains a second circuit board 23, and the second metal shielding box is adapted to be located on the opposite side of the first metal shielding box and connected to it; several plug-in components are spaced apart between the first circuit board 13 and the second circuit board 23, and are connected to the first circuit board 13 and the second circuit board 23 to transmit radio frequency signals; each plug-in component includes a first connector 14 and a second connector 24, and the first connector 14 is adapted to be plugged into and connected to the second connector 24.
[0032] It should be noted that the various plug-in components include several different models, each serving a different function. The specific model and quantity can be selected according to actual needs. The first connector 14 and the second connector 24 can be connected to the circuit board or the metal shielding box as needed.
[0033] The receiving element and the transmitting element are integrated on the first circuit board 13 and the second circuit board 23, respectively.
[0034] The first and second metal shielding boxes are made of aluminum alloy.
[0035] Specifically, the connectors that connect to the first circuit board 13 or the first metal shielding box are referred to as the first connector 14, and the connectors that connect to the second circuit board 23 or the second metal shielding box are referred to as the second connector 24.
[0036] The beneficial effects of the high isolation device for multi-channel transceiver components provided in this embodiment of the present invention are as follows: Compared with the prior art, the high isolation device for multi-channel transceiver components provided in this embodiment of the present invention has the first circuit board 13 and the second circuit board 23 respectively located in the first metal shielding box and the second metal shielding box, and directly connected by plug-in components to transmit radio frequency signals. The spatial signals are difficult to interfere with each other in the different metal shielding boxes, which greatly improves the isolation. At the same time, the separate design of the first metal shielding box and the second metal shielding box makes the receiving and transmitting debugging and testing independent of each other and can be carried out at the same time, which effectively improves the testing efficiency.
[0037] like Figure 3 and Figure 4 As shown, in a specific embodiment of the high isolation device for multi-channel transceiver components provided in this utility model, it further includes a plurality of metal shielding blocks 25, a plurality of shielding grooves are formed on the metal shielding blocks 25, one end of the metal shielding block 25 is connected to the second metal shielding box, and the other end abuts against the first metal shielding box; the shielding groove is suitable for setting the first connector 14 or the second connector 24.
[0038] It should be noted that the metal shielding block 25 is made of aluminum alloy; each metal shielding block 25 has one, two or more shielding slots, which cover the outside of the plug-in assembly to further improve the isolation.
[0039] Specifically, the metal shielding block 25 is connected to the second metal shielding box, and each metal shielding block 25 has two shielding slots, with part of the second connector 24 located in the shielding slot.
[0040] like Figure 1 and Figure 2 As shown, in a specific embodiment of the high isolation device for multi-channel transceiver components provided in this utility model, the first metal shielding box includes a first box body 11 and a first cover plate 12. The first cover plate 12 is connected to the first box body 11. A first receiving groove is provided between the first box body 11 and the first cover plate 12. A first circuit board 13 is disposed in the first receiving groove.
[0041] It should be noted that the first metal shielding box is designed as a separate unit, consisting of a first box body 11 and a first cover plate 12, which effectively improves the ease of disassembling and assembling the first circuit board 13, facilitating installation, maintenance, testing, and other operations. The first cover plate 12 is fixed to the first box body 11 with screws.
[0042] like Figure 1 and Figure 2As shown, in a specific embodiment of the high isolation device for multi-channel transceiver components provided in this utility model, a first receiving slot is opened on the side of the first housing 11 facing the second metal shielding box, and a first cover plate 12 is provided on the side of the first receiving slot facing the second metal shielding box and connected to the first housing 11; a plurality of first clearance openings 121 are opened on the first cover plate 12, and the first clearance openings 121 are used to avoid the plug-in components.
[0043] It should be noted that placing the first cover on the side facing the second shielding box can effectively protect the first cover and its fixing screws through the second shielding box, effectively preventing the fixing screws from oxidizing and rusting.
[0044] like Figure 1 and Figure 3 As shown, in a specific embodiment of the high isolation device for multi-channel transceiver components provided in this utility model, the second metal shielding box includes a second box body 21 and a second cover plate 22. The second cover plate 22 is connected to the second box body 21. A second receiving groove is provided between the second box body 21 and the second cover plate 22. A second circuit board 23 is disposed in the second receiving groove.
[0045] It should be noted that the second metal shielding box is designed as a separate unit, consisting of a second box body 21 and a second cover plate 22, which effectively improves the ease of disassembling and assembling the first circuit board 13, facilitating installation, maintenance, testing, and other operations. The second cover plate 22 is fixed to the second box body 21 with screws.
[0046] like Figure 1 and Figure 3 As shown, in a specific embodiment of the high isolation device for multi-channel transceiver components provided in this utility model, the second receiving slot is opened on the side of the second box 21 facing the first metal shielding box, and the second cover plate 22 is provided on the side of the second receiving slot facing the first metal shielding box and connected to the second box 21; a plurality of second clearance openings 221 are opened on the second cover plate 22, and the second clearance openings 221 are used to avoid the plug-in components.
[0047] Furthermore, such as Figure 3 and Figure 4 As shown, in a specific embodiment of the high isolation device for multi-channel transceiver components provided in this utility model, the second metal shielding box further includes a waterproof shielding strip 26. The second box body 21 has an annular sealing groove on the side facing the first metal shielding box. The annular sealing groove is located on the outside of the second cover plate 22. The waterproof shielding strip 26 is embedded in the annular sealing groove and is adapted to abut against the first box body 11.
[0048] It should be noted that placing the second cover on the side facing the second shielding box serves two purposes. First, the second shielding box effectively protects the second cover and its fixing screws, preventing oxidation and rust. Second, since the first and second covers are on opposite sides, a waterproof shielding strip 26 is sufficient to provide both waterproofing and electromagnetic shielding for both metal shielding boxes. The waterproof shielding strip 26 is made of a cured mixture of aluminum, silver, and rubber, and functions as both waterproofing and electromagnetic shielding.
[0049] like Figure 3 As shown, it should be noted that the second lid is a separate unit, composed of several panels.
[0050] Specifically, the second box lid is made up of four pieces of wood.
[0051] like Figure 1 As shown, in a specific embodiment of the high isolation device for multi-channel transceiver components provided in this utility model, a plurality of fasteners 30 are further included. The plurality of fasteners 30 are spaced apart along the outer periphery of the first metal shielding box. The fasteners 30 pass through the first metal shielding box and connect to the second metal shielding box to fix the first metal shielding box and the second metal shielding box together.
[0052] Specifically, fastener 30 is a bolt or screw.
[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 multi-channel transceiver assembly high isolation device, comprising: The utility model relates to a kind of radio frequency signal transmission device, including: First metal shielding box, inside first circuit board is equipped with; Second metal shielding box, inside second circuit board is equipped with, the second metal shielding box is suitable for being equipped in the first metal shielding box opposite side and is connected with the first metal shielding box; Several plug-in components are spaced apart between the first circuit board and the second circuit board, and are connected with the first circuit board and the second circuit board to transmit radio frequency signals;The plug-in component includes a first connector and a second connector, and the first connector is suitable for plug-in connection with the second connector.
2. The high isolation device for a multi-channel transceiver assembly of claim 1, wherein, It also includes a plurality of metal shielding blocks, a plurality of shielding slots are formed in the metal shielding blocks, one end of the metal shielding blocks is connected with the second metal shielding box, and the other end is abutted with the first metal shielding box;The shielding slot is suitable for setting the first connector or the second connector.
3. The high isolation device for a multi-channel transceiver assembly of claim 1, wherein, The first metal shielding box includes a first box body and a first cover plate, the first cover plate is connected with the first box body, and a first accommodating groove is provided between the first box body and the first cover plate, and the first circuit board is arranged in the first accommodating groove.
4. The high isolation device for a multi-channel transceiver assembly of claim 3, wherein, The first accommodating groove is formed on the side of the first box body facing the second metal shielding box, the first cover plate is arranged on the side of the first accommodating groove facing the second metal shielding box and connected with the first box body, a plurality of first avoiding openings are formed on the first cover plate, and the first avoiding openings are used to avoid the plug-in components.
5. The high isolation device for a multi-channel transceiver assembly of claim 4, wherein, The second metal shielding box includes a second box body and a second cover plate, the second cover plate is connected with the second box body, and a second accommodating groove is provided between the second box body and the second cover plate, and the second circuit board is arranged in the second accommodating groove.
6. The high isolation device for a multi-channel transceiver assembly of claim 5, wherein, The second accommodating groove is formed on the side of the second box body facing the first metal shielding box, the second cover plate is arranged on the side of the second accommodating groove facing the first metal shielding box and connected with the second box body, a plurality of second avoiding openings are formed on the second cover plate, and the second avoiding openings are used to avoid the plug-in components.
7. The high isolation device for a multi-channel transceiver assembly of claim 6, wherein, The second metal shielding box further includes a waterproof shielding strip, an annular sealing groove is formed on the side of the second box body facing the first metal shielding box, the annular sealing groove is arranged outside the second cover plate, the waterproof shielding strip is embedded in the annular sealing groove, and is suitable for abutting with the first box body.
8. The high isolation device for a multi-channel transceiver assembly of claim 1, wherein, It also includes a plurality of fasteners, and a plurality of fasteners are spaced apart along the outer periphery of the first metal shielding box, and the fasteners are connected with the second metal shielding box through the first metal shielding box.