Radio frequency front-end electrostatic protection structure

Abstract

The utility model discloses a radio frequency front end electrostatic protection structure which comprises a first shielding frame, a second shielding frame is arranged in the first shielding frame in an attached mode, a threaded hole is formed in the first shielding frame, and a bolt is connected to the threaded hole in a threaded mode. According to the utility model, rotation of the bolt at the threaded hole is utilized to enable the bolt and the rubber pad to abut against each other or cancel abutting against each other, so that the second shielding rack can be telescopically adjusted in the first shielding rack to change the height of the internal space, and therefore, in the life cycle of a product, the product is not damaged. When a higher component needs to be replaced due to performance improvement or function extension and the like, a new component can be smoothly installed in the shielding cover, so that the problem that the new component cannot be installed due to space limitation of the shielding cover is avoided, the shielding cover can continuously perform electrostatic protection on the radio frequency front-end circuit board, the circuit board is prevented from being influenced by static electricity, and the service life of the radio frequency front-end circuit board is prolonged. And product performance and stability are maintained.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency related technology, and in particular to a radio frequency front-end electrostatic protection structure. Background Technology

[0002] The radio frequency (RF) front-end is a crucial component in wireless communication equipment, primarily responsible for processing RF signals. Because the RF front-end circuit board contains numerous electrostatically sensitive components, such as integrated circuits, electrostatic discharge (ESD) protection is implemented to prevent the thin oxide layer from being easily damaged by instantaneous high voltage ESD, thus affecting performance. This is achieved by installing a shielding cover on the RF front-end circuit board. While existing shielding covers can provide ESD protection, their internal height is typically fixed. Therefore, during the product's lifecycle, if higher-height components need to be replaced due to performance improvements or functional expansions, the fixed internal height of the shielding cover may prevent the new components from fitting properly, rendering the shielding cover ineffective for ESD protection. This exposes the circuit board to the risk of ESD breakdown, impacting product performance and stability. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a radio frequency front-end electrostatic protection structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An electrostatic discharge (ESD) protection structure for a radio frequency (RF) front end includes a first shielding frame, a second shielding frame being fitted inside the first shielding frame, a threaded hole being provided in the first shielding frame, a bolt being threadedly connected to the threaded hole, a rubber pad being adhered to the second shielding frame, the rubber pad being in contact with the bolt, and a shielding cover being provided in the second shielding frame.

[0006] Preferably, the shielding cover is connected to multiple sets of heat dissipation fins.

[0007] Preferably, a sliding groove is provided at the second shielding frame, and the sliding groove is slidably connected to the shielding cover.

[0008] Preferably, the first shielding frame, the second shielding frame, and the shielding cover are made of nickel silver.

[0009] Preferably, both ends of the shielding cover are connected to a lever.

[0010] Preferably, the bolt has a cross groove.

[0011] Preferably, the multiple sets of heat dissipation fins are distributed at equal intervals.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. By using the cooperation between the first shielding frame, the second shielding frame, the threaded hole, the bolt, and the rubber pad, and by rotating the bolt at the threaded hole to tighten or loosen the bolt and the rubber pad, the second shielding frame can be extended and retracted within the first shielding frame to change the height of the internal space. This allows the new components to be easily installed inside the shielding cover when higher components need to be replaced due to performance improvements or functional expansions during the product's life cycle. This avoids the problem of being unable to install new components due to space limitations in the shielding cover, ensuring that the shielding cover can continuously provide electrostatic protection for the RF front-end circuit board, protecting the circuit board from electrostatic effects, and maintaining product performance and stability.

[0014] 2. Through the cooperation between the shielding cover and the heat dissipation fins, the shielding cover, equipped with multiple sets of heat dissipation fins, increases its surface area, thereby increasing the contact area with the air. According to the principle of heat transfer, a larger surface area means that heat can be dissipated into the surrounding environment more quickly. For example, when the RF front-end circuit board generates heat during operation, the heat is conducted to the shielding cover, and the heat dissipation fins can more efficiently transfer the heat to the air, thereby reducing the temperature of the circuit board and ensuring that it operates within a suitable temperature range. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the electrostatic protection structure for a radio frequency front end proposed in this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of the central groove, shielding cover, and heat dissipation fins;

[0017] Figure 3 for Figure 1 A schematic diagram of the structure of the screw hole, bolt, and rubber gasket;

[0018] Figure 4 for Figure 1 A schematic diagram of the structure of the second shielding frame, bolts, and rubber pads;

[0019] Figure 5 for Figure 1 A schematic diagram of the structure of the shielding cover, heat dissipation fins, and fins.

[0020] In the diagram: 1. First shielding frame; 2. Second shielding frame; 3. Threaded hole; 4. Bolt; 5. Rubber pad; 6. Slide groove; 7. Shielding cover; 8. Heat dissipation fins; 9. Cross groove; 10. Paddle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1, referring to Figures 1 to 5 An electrostatic discharge (ESD) protection structure for a radio frequency (RF) front-end includes a first shielding frame 1, a second shielding frame 2 placed inside the first shielding frame 1, and the second shielding frame 2 being movable up and down within the first shielding frame 1. A threaded hole 3 is provided in the first shielding frame 1, and a bolt 4 is threadedly connected to the threaded hole 3, allowing the bolt 4 to rotate. A rubber pad 5 is adhered to the second shielding frame 2, contacting the bolt 4. A shielding cover 7 is provided in the second shielding frame 2. The movable up and down movement of the second shielding frame 2 within the first shielding frame 1 allows for changes in the internal height of both the first and second shielding frames. By contacting the bolt 4 with the rubber pad 5 and utilizing the frictional force, the first and second shielding frames 1 and 2 are adjusted and fixed. This allows for the replacement and upgrading of electrical components at different heights within the RF front-end circuit boards of the first and second shielding frames 1 and 2.

[0023] In this embodiment, multiple sets of heat dissipation fins 8 are connected to the shielding cover 7, and a sliding groove 6 is provided at the second shielding frame 2. The sliding groove 6 is slidably connected to the shielding cover 7. The first shielding frame 1, the second shielding frame 2, and the shielding cover 7 are made of nickel silver, which is a metal shielding material that is easy to tin. It has good welding performance, conductivity, and electromagnetic shielding effect, and is suitable for radio frequency front-end modules with high requirements for shielding performance and welding. The shape and size of the first shielding frame 1, the second shielding frame 2, and the shielding cover 7 are adjusted according to the actual shape of the radio frequency front-end circuit board. A lever 10 is connected to one end and the other end of the shielding cover 7. The lever 10 is used to move the shielding cover 7. In this way, after the shielding cover 7 is separated from the second shielding frame 2, the radio frequency front-end circuit board in the first shielding frame 1 and the second shielding frame 2 can be exposed. A cross groove 9 is provided at the bolt 4. The cross groove 9 is used to catch the cross screwdriver to rotate the sleeve bolt 4. Multiple sets of heat dissipation fins 8 are evenly distributed.

[0024] The working principle of this embodiment is as follows: In use, the first shielding frame 1 is soldered onto the radio frequency front-end circuit board. After soldering, the first shielding frame 1, the second shielding frame 2, and the shielding cover 7 are all made of metal, which has good conductivity. When electrostatic charge comes into contact with the shielding cover, it can be quickly conducted to the ground or other low potential points through the shielding cover, without accumulating on the shielding cover to form a high potential, thereby avoiding the influence of electrostatic charge on the internal electronic components. For example, even if electrostatic charge tries to approach the radio frequency front-end circuit board inside the shielding cover, the charge will quickly flow away along the metal surface of the shielding cover and will not enter the interior of the shielding cover. If it is necessary to replace the electrical components in the radio frequency front-end circuit board, and if the electrical components are high, the second shielding frame 2 can be lifted up from the first shielding frame 1. Then, by inserting a Phillips screwdriver into the Phillips head slot 9, the bolt 4 is rotated, so that the bolt 4 contacts the rubber pad 5 at the second shielding frame 2 to generate friction, thereby changing the internal height of the first shielding frame 1 and the second shielding frame 2.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A radio frequency front-end electrostatic protection structure, comprising a first shielding frame (1), characterized in that, The first shielding frame (1) has a second shielding frame (2) placed inside it. The first shielding frame (1) has a threaded hole (3) and a bolt (4) is threaded into the threaded hole (3). The second shielding frame (2) has a rubber pad (5) attached to it. The rubber pad (5) is in contact with the bolt (4). The second shielding frame (2) has a shielding cover (7).

2. The radio frequency front-end electrostatic protection structure according to claim 1, characterized in that, Multiple sets of heat dissipation fins (8) are connected to the shielding cover (7).

3. The radio frequency front-end electrostatic protection structure according to claim 1, characterized in that, A sliding groove (6) is provided at the second shielding frame (2), and the sliding groove (6) is slidably connected to the shielding cover (7).

4. The radio frequency front-end electrostatic protection structure according to claim 1, characterized in that, The first shielding frame (1), the second shielding frame (2) and the shielding cover (7) are made of nickel silver.

5. The radio frequency front-end electrostatic protection structure according to claim 1, characterized in that, The shielding cover (7) is connected to a lever (10) at one end and the other end.

6. The radio frequency front-end electrostatic protection structure according to claim 1, characterized in that, A cross groove (9) is provided at the bolt (4).

7. The radio frequency front-end electrostatic protection structure according to claim 2, characterized in that, The heat dissipation fins (8) are distributed at equal intervals.

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