A radio frequency receiving component with a modular electromagnetic signal shielding shell

Abstract

The present invention discloses a radio frequency receiving component with a modular electromagnetic signal shielding shell, including a base, a radio frequency board is installed on the base, a plurality of electronic modules are installed on the radio frequency board, and a combination module partition is detachably provided on the radio frequency board. The combination module partitions are spliced ​​with each other to form independent cavities and accommodate different electronic modules. A fixed cover plate is arranged on the top of the combination module partition, and the outer side of the fixed cover plate is fixedly installed on the edge of the base, and a cover plate is arranged on the top of the fixed cover plate. The present invention is simple to manufacture and has strong versatility. It can be applied to various radio frequency boards. When adjusting the position of components of the radio frequency board, the module assembly can be adjusted to re-realize the electromagnetic isolation between different electronic modules, which is convenient for rapid debugging and rapid finalization of the radio frequency board.

Description

Technical Field

[0001] The invention relates to the field of electromagnetic shielding of radio frequency boards, in particular to a radio frequency receiving component with a modular electromagnetic signal shielding shell. Background Art

[0002] In electronics theory, when current flows through a conductor, a magnetic field is formed around the conductor; when alternating current flows through a conductor, an alternating electromagnetic field is formed around the conductor, which is called an electromagnetic wave. Electromagnetic waves can propagate in the air and be reflected by the ionosphere at the outer edge of the atmosphere, forming long-distance transmission capabilities. High-frequency electromagnetic waves with long-distance transmission capabilities are called radio frequencies. Radio frequency technology is widely used in the field of wireless communications, and cable television systems use radio frequency transmission.

[0003] The RF receiving component is used to receive high-frequency signals and then transmit the processed signals to the baseband for signal processing after frequency conversion and amplification. When receiving and processing high-frequency signals, electromagnetic waves will interact with electronic components, and electromagnetic noise or interference will often be generated within a system or between different systems, causing system performance to deteriorate. This requires signal shielding of each module and electromagnetic shielding in a certain area of ​​space to reduce electromagnetic interference caused by certain sources. The shielding body can usually be made of metals such as copper, aluminum, and steel.

[0004] At present, the electromagnetic signal shielding shell of the RF receiving component is usually machined to mill the metal block or plate into the required cavity, such as the RF local oscillator component structure in China's public invention patent CN201510336973.7. This method has a long shell manufacturing cycle and high processing and manufacturing costs. After the shell is produced, the components on the RF receiving component cannot be adjusted. If adjustment is required, the shell needs to be remade. This shell is not suitable in the early stage of RF receiving component development. Therefore, there is an urgent need for an electromagnetic signal shielding shell with a short cycle, low cost, and flexible internal cavity structure. Summary of the invention

[0005] In order to solve the defects of long manufacturing cycle and high processing and manufacturing cost of electromagnetic shielding shell of radio frequency board in the prior art, the present invention provides a radio frequency receiving component with a modular electromagnetic signal shielding shell, which has short processing cycle, low cost and can flexibly change the internal cavity structure.

[0006] The present invention provides a radio frequency receiving component with a modular electromagnetic signal shielding shell, comprising a base, a radio frequency board is installed on the base, a plurality of electronic modules are installed on the radio frequency board, and a combined module partition is detachably provided on the radio frequency board. The combined module partitions are spliced ​​with each other to form independent cavities and accommodate different electronic modules. A fixed cover plate is arranged on the top of the combined module partition, the outer side of the fixed cover plate is fixedly installed on the edge of the base, and a cover plate is arranged on the top of the fixed cover plate.

[0007] Furthermore, the base is in a groove shape with an opening at the top, and a fixing cover plate mounting groove is provided on the top edge of the base.

[0008] Furthermore, the radio frequency board and the base are both provided with mounting holes.

[0009] Furthermore, the module assembly has at least two splicing ends.

[0010] Furthermore, the module assembly has at least an isolating member and a transition member, the isolating member is a rectangular plate-like structure, splicing ends are arranged on two opposite sides of the isolating member, a fixing hole is arranged in the middle of the isolating member, the fixing hole is parallel to the two sides where the splicing ends are located, and the transition member is a right-angle splicing structure of a rectangular plate structure, comprising at least one right-angle transition portion and at least two splicing ends that are not in the same plane.

[0011] Furthermore, the isolating member and the adapter both include at least a fixed type and a movable type, the fixed type includes at least two fixing holes, and the movable type includes at most one mounting hole.

[0012] Furthermore, the splicing end includes a female connector that is recessed in an arc shape and a male connector that is protruded in an arc shape, and the male connector and the female connector match each other.

[0013] Furthermore, the adapter is integrally formed.

[0014] Furthermore, the fixed cover plate is provided with through holes for installing module components evenly distributed in a rectangular array, and slide rails are also provided on the top of both sides of the fixed cover plate.

[0015] Furthermore, the cover plate is slidably engaged in the slide rail, and a connecting hole is also provided at the edge of the cover plate.

[0016] The present invention is simple to manufacture and has strong versatility, and can be applied to various radio frequency boards. When adjusting the positions of components of the radio frequency board, the electromagnetic isolation between different electronic modules can be re-realized by adjusting the module components, which is convenient for rapid debugging and rapid finalization of the radio frequency board. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a radio frequency receiving component with a modular electromagnetic signal shielding housing in an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the base structure of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention;

[0019] Figure 3This is a schematic diagram of a fixed cover structure of a radio frequency receiving component with a modular electromagnetic signal shielding housing in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of a cover plate of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention;

[0021] Figure 5 A schematic diagram of a structural form of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of another structural form of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention;

[0023] Figure 7 It is a structural schematic diagram of module 1# of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention.

[0024] Figure 8 It is a structural schematic diagram of a 2# module of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention.

[0025] Fig. 9 It is a structural schematic diagram of the 3# module of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention.

[0026] Fig.10 It is a structural schematic diagram of a 4# module of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention.

[0027] Fig.11 It is a structural schematic diagram of a 5# module of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention.

[0028] Fig.12 It is a structural schematic diagram of the 6# module of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention.

[0029] Fig.13 It is a structural schematic diagram of the 7# module of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention.

[0030] Fig.14 It is a structural schematic diagram of the 8# module of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention.

[0031] Fig.15 It is a structural schematic diagram of a 9# module of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention.

[0032] Fig.16 It is a side structural schematic diagram of a 2# module of a combined modular partition of a radio frequency receiving component with a modular electromagnetic signal shielding shell in an embodiment of the present invention.

[0033] The reference numerals are as follows:

[0034] 1. Base; 2. RF board; 3. Combined module partition; 4. Fixed cover; 5. Module fixing screws; 6. Cover plate; 7. Cover fixing bolts; 21. Mounting hole; 31. 1# module; 32. 2# module; 33. 3# module; 34. 4# module; 35. 5# module; 36. 6# module; 37. 7# module; 38. 8# module; 39. 9# module; 301. Male connector; 302. Female connector; 303. Fixing hole; 304. Pressing plane; 61. Connecting hole. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0037] like Figure 1-4 As shown, a radio frequency receiving component with a modular electromagnetic signal shielding shell includes a base 1, a radio frequency board 2 is installed on the base 1, and a plurality of electronic modules are arranged on the radio frequency board 2. The electronic module is generally composed of a single electronic component or a plurality of electronic components, forming the core part of the radio frequency receiving component. The specific principle and installation method are generally the common methods in the prior art. A combined module partition 3 is also detachably arranged on the radio frequency board 2. The combined module partitions 3 are spliced ​​with each other to form independent cavities and accommodate different electronic modules. A fixed cover plate 4 is arranged on the top of the combined module partition 3. The outer side of the fixed cover plate 4 is fixedly installed on the edge of the base 1, and a cover plate 6 is arranged on the top of the fixed cover plate 4. The base 1 is in a groove shape with an upper opening, and a fixed cover plate mounting groove is arranged on the top edge of the base 1.

[0038] The combined module partition 3 is a modular plate structure, similar to daily building blocks. By designing multiple universal modules, the combination of different cavities can be realized to the maximum extent, so as to be suitable for the isolation between different electronic modules. Figure 5 and Figure 6 As shown, two different combinations of combined module partitions 3 are provided as demonstration.

[0039] Figure 5 and Figure 6 The two combined modular partitions 3 shown in the figure are composed of 9 different modular components, and the modular components are engraved with numbers for easy selection during assembly, such as Figure 7-15 As shown, the quantity of each module component is set according to demand.

[0040] like Figure 7-15 As shown, each module assembly has at least two splicing ends, which include a male connector 301 and a female connector 302, and the male connector 301 and the female connector 302 match each other. Fig.16 As shown, a female connector 302 with an arc-shaped recess and a male connector 301 with an arc-shaped protrusion are generally used. Both sides of the arc-shaped protrusion of the male connector 301 and both sides of the recess of the female connector 302 are also provided with clamping planes 304. The splicing end of this structure can ensure a certain flexibility during splicing on the one hand; on the other hand, the joint after splicing is a nonlinear joint of a plane plus an arc surface, so that the leakage of electromagnetic signals can be avoided as much as possible.

[0041] Generally, the module assembly has at least an isolator and an adapter. The isolator is generally a rectangular plate-shaped structure. The module assembly is provided with a fixing hole 303 connected to the RF board 2. The fixing hole 303 is generally located in the center of the module assembly and parallel to the board surface of the module assembly, so that the module assembly can be vertically fixed on the RF board 2. Figure 7 , 8 1# module 31, 2# module 32, 6# module 36, 7# module 37 shown in 12 and 13 are all isolators, and splicing ends are arranged on opposite sides of the isolators, and the fixing holes 303 of the isolators are parallel to the two sides where the splicing ends are located. The adapter is a right-angle splicing structure of a rectangular plate structure, and the adapter includes at least one right-angle adapter part and at least two splicing ends that are not in the same plane, generally in a T-shaped structure, an L-shaped structure or a cross-shaped structure, and generally adopts an integrally formed structure, such as Fig. 9 , 10 Module 33#, module 34#, module 35#, module 38#, and module 39# shown in FIGS. 14 and 15# are all adapters.

[0042] The isolator and the adapter both include at least a fixed type and a movable type. The fixed type includes at least two fixing holes 303. After being installed on the RF board 2, the fixed type cannot be moved or rotated, and serves as the skeleton of the combined module partition 3. Figure 7 Module 1#31 and Fig.14The 9# module 39 in the movable type has at most one fixing hole 303. When the movable type is installed, it can be rotated before the overall combined module is fixed and locked to avoid the interference of adjacent module components with each other and the inability to install them due to insufficient installation space in some positions.

[0043] Both the RF board 2 and the base 1 are provided with mounting holes 21. The RF board 2 is generally provided with threaded holes for installing electronic components or electrical modules, and through holes are provided between the electronic components or electrical modules for installing the combined module partition 3. Generally, the through holes between the two electronic components that need to be isolated are arranged in a straight line, so that the combined module partition 3 can be continuously installed on one surface, and a 90° angle transition is used at the corner to facilitate splicing with adapters. There are a number of threaded holes distributed in a rectangular array on the base 1, as shown in the figure, some of which need to be set corresponding to the through holes on the RF board 2.

[0044] The fixed cover plate 4 is evenly distributed with bolt holes 41 for installing module components in a rectangular array. When fixing the combined module partition plate 3, the module fixing screws 5 pass through the fixed cover plate 4, the fixing holes 303 of the combined module cover plate, and the through holes on the RF board 2 in sequence to fix the combined module cover plate on the RF board 2. In specific operations, the combined module cover plate can be spliced ​​according to the distribution of electronic components, connected to the fixed cover plate 4 with the module fixing screws 5, and then fastened to the RF board 2 and tightened to complete the fixation. Slide rails are also provided on the top of both sides of the fixed cover plate 4.

[0045] The cover plate 6 is slidably engaged in the slide rail, similar to the setting of a drawer, and the cover plate 6 can be taken out. A connecting hole 61 is also provided on the edge of the cover plate 6, and a cover plate fixing bolt 7 is provided in the connecting hole 61 to connect and fix the cover plate 6 to the base 1. Because the fixed cover plate 4 is a universal structure, it is pre-arranged with bolt holes 41 for installing module components evenly distributed in a rectangular array. When in use, usually only some of the bolt holes 41 are used. The unused bolt holes 41 have the problem of electromagnetic signal leakage. The main purpose of the cover plate 6 is to cover the unused bolt holes 41 on the fixed cover plate 4 to avoid electromagnetic signal leakage. When the module partition 3 needs to be reassembled, the cover plate fixing bolts 7 are removed, and the cover plate 6 is pulled out, and the combined module cover plate 3 can be adjusted.

[0046] 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 radio frequency receiving component with a modular electromagnetic signal shielding shell, comprising a base, a radio frequency board is mounted on the base, and a plurality of electronic modules are arranged on the radio frequency board; characterized in that: Also includes the following components: The combined module partition is a modular plate-like structure, which is composed of different module components spliced ​​together and is detachably arranged on the radio frequency board. The combined module partitions are spliced ​​together to form independent cavities and accommodate different electronic modules. A fixed cover plate, fixedly arranged on the top of the combined module partition; A cover plate is fixedly arranged on the top of the fixed cover plate.

2. The radio frequency receiving component with a modular electromagnetic signal shielding housing according to claim 1, characterized in that: The base is in a groove shape with an opening at the top, and a fixing cover plate mounting groove is provided at the top edge of the base.

3. The radio frequency receiving component with a modular electromagnetic signal shielding housing according to claim 1, characterized in that: The radio frequency board and the base are both provided with mounting holes.

4. The radio frequency receiving component with a modular electromagnetic signal shielding housing according to claim 3, characterized in that: The module assembly has at least two splicing ends.

5. The radio frequency receiving component with a modular electromagnetic signal shielding housing according to claim 4, characterized in that: The module assembly comprises at least an isolating member and a transition member, wherein the isolating member is a rectangular plate-shaped structure, splicing ends are arranged on two opposite sides of the isolating member, a fixing hole is arranged in the middle of the isolating member, and the fixing hole is parallel to the two sides where the splicing ends are located, and the transition member is a right-angle splicing structure of a rectangular plate structure, comprising at least one right-angle transition portion and at least two splicing ends that are not in the same plane.

6. The radio frequency receiving component with a modular electromagnetic signal shielding housing according to claim 5, characterized in that: The isolating member and the adapter member both include at least a fixed type and a movable type. The fixed type includes at least two fixing holes, and the movable type includes at most one fixing hole.

7. The radio frequency receiving component with a modular electromagnetic signal shielding housing according to claim 5, characterized in that: The splicing end comprises a female connector which is recessed in an arc shape and a male connector which is protruded in an arc shape, and the male connector and the female connector match each other.

8. The radio frequency receiving component with a modular electromagnetic signal shielding housing according to claim 5, characterized in that: The adapter is integrally formed.

9. The radio frequency receiving component with a modular electromagnetic signal shielding housing according to claim 2, characterized in that: The fixed cover plate is provided with through holes for installing module components evenly distributed in a rectangular array, and slide rails are also provided on the top of both sides of the fixed cover plate.

10. The radio frequency receiving component with a modular electromagnetic signal shielding housing according to claim 2, characterized in that: The cover plate is slidably engaged in the slide rail, and a connecting hole is also arranged at the edge of the cover plate.

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