Anti-interference microwave communication relay device

Abstract

The utility model belongs to the microwave communication equipment field discloses an anti -interference microwave communication relay device, including the shell with the lead wire exit and entry hole, its characterized is: the shell outer surface sets up at least the shielding block group of surface metal material, the outer peripheral surface of each shielding block in shielding block group is the surface of total body towards the direction of departing from the shell. The array formed by shielding block group can make the interference electromagnetic wave in the adjacent shielding block gap multiple reflection attenuation, forms effective absorption and energy dissipation to the interference electromagnetic wave, improves the anti -electromagnetic interference ability of microwave communication relay device greatly, and basically will not reflect the interference electromagnetic wave back to the surrounding environment, avoids the electromagnetic interference to the other electronic equipment around.

Description

Technical Field

[0001] This utility model relates to the field of microwave communication equipment, specifically an anti-interference microwave communication relay device. Background Technology

[0002] Microwave communication, due to its advantages of wide bandwidth, large capacity, and high transmission quality, is widely used in fields such as long-distance communication, broadcasting, and emergency communication. In long-distance microwave transmission, signal attenuation is severe, typically requiring repeater devices to receive, amplify, and forward signals to ensure the continuity and stability of the communication link. As a critical node in the communication link, the performance of the microwave repeater directly affects the communication quality of the entire system.

[0003] A microwave repeater typically includes a metal casing, a receiving antenna, a transmitting antenna, and electronic equipment. The electronic components include a microwave transceiver system, a baseband and intermediate frequency processing system, and a power module. All electronic equipment is housed within the metal casing, while the receiving and transmitting antennas are located outside. The metal casing has cable exit holes through which the signal cables of the internal electronic equipment are led out to connect to the receiving or transmitting antennas.

[0004] Existing microwave repeater devices suffer from the following problems: Because microwave repeater electronic components are extremely sensitive to environmental electromagnetic waves, in densely populated urban areas, industrial zones, or near high-voltage transmission lines, electromagnetic signals can easily couple into the device's casing, causing electromagnetic interference. Currently, most repeater devices rely primarily on internal circuit filtering and shielding enclosures to suppress interference. These enclosures are often made of smooth metal or non-metal materials, lacking effective external anti-interference protection designs. External interference signals can penetrate or diffract through weak points in the shielding, weakening the overall shielding effectiveness and affecting communication stability. Furthermore, the device enclosure only reflects environmental electromagnetic waves without eliminating them, potentially interfering with other surrounding electronic equipment. Utility Model Content

[0005] To address the aforementioned issues, this utility model provides an anti-interference microwave communication relay device, comprising a housing with wire inlet / outlet holes, and a shielding block group with at least one surface made of metal material disposed on the outer surface of the housing, wherein the outer peripheral surface of each shielding block in the shielding block group is generally oriented away from the housing.

[0006] Preferably, an annular shielding strip is provided on the outer surface of the outer shell of the shielding block assembly. The shielding strip has at least an inner circumferential surface made of metal material, and the inner circumferential surface of the shielding strip is generally oriented away from the direction of the outer shell.

[0007] Preferably, the outer peripheral surface of the shielding strip is a metal material surface, and the outer peripheral surface of the shielding strip is generally oriented away from the direction of the outer shell.

[0008] Preferably, the shielding strip is a ring composed of multiple bent line segments.

[0009] Preferably, a shielding sleeve made of metal material is provided inside the wire inlet / outlet hole, and a slit is left between the shielding sleeve and the housing of the wire inlet / outlet hole. One side of the shielding sleeve is fixedly connected to a conductive spring. A spring hole is opened on the side wall of the wire inlet / outlet hole, and the conductive spring passes through the spring hole. The other end of the conductive spring is fixedly connected to the shielding strip.

[0010] Preferably, the shielding blocks in two adjacent rows and two columns are staggered.

[0011] Preferably, each shielding block is conical, frustum-shaped, pyramidal, or truncated pyramidal.

[0012] The beneficial effects of this invention are: the array formed by the shielding blocks can cause the interfering electromagnetic waves to be reflected and attenuated multiple times in the gap between adjacent shielding blocks, effectively absorbing and dissipating the energy of the interfering electromagnetic waves, greatly improving the anti-electromagnetic interference capability of the microwave communication relay device, and basically not reflecting the interfering electromagnetic waves back to the surrounding environment, thus avoiding electromagnetic interference to other electronic devices in the vicinity. Attached Figure Description

[0013] Figure 1 This is a perspective view of the anti-interference microwave communication relay device according to Embodiment 1 of this utility model; Figure 2 This is a left view of the anti-interference microwave communication relay device in Embodiment 1; Figure 3 This is a cross-sectional view of the anti-interference microwave communication relay device in Embodiment 1 along line AA; Figure 4 This is a schematic diagram illustrating the principle of electromagnetic wave reflection by a shielding block. Figure 5 This is a perspective view of the anti-interference microwave communication relay device in Example 2; Figure 6 This is a left view of the anti-interference microwave communication relay device in Embodiment 2; Among them, 1 is the outer shell, 2 is the shielding strip, 3 is the shielding block, 4 is the conductive spring, 5 is the wire inlet / outlet hole, and 6 is the shielding sleeve. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0015] Example 1:

[0016] like Figure 1-3As shown, Embodiment 1 of this utility model discloses an anti-interference microwave communication relay device, including a rectangular grounded housing 1. Microwave communication electronic equipment, such as a microwave transceiver module, a power supply module, and a signal processing circuit, is installed inside the housing 1. Two wire inlet / outlet holes 5 are machined on the upper part of the housing 1. The wire inlet / outlet holes 5 are metal domes with openings in the middle of the top.

[0017] A shielding block group is provided on the front and rear outer surfaces along the long axis of the outer casing 1. Each shielding block group consists of several shielding blocks 3 arranged in an array. Each shielding block 3 is a frustum-shaped protrusion with a metallic surface. The shielding block 3 can also be configured with other shapes where its outer circumferential surface generally faces away from the direction of the outer casing 1. "The outer circumferential surface of the shielding block 3 generally faces away from the direction of the outer casing 1" means that the normal vector at any position on the outer circumferential surface of the shielding block 3 always points outward from the outer casing 1 (i.e., the angle between the normal vector at any position on the outer circumferential surface of the shielding block 3 and the normal vector of the outer surface of the outer casing 1 is always less than 90 degrees). For example, the shielding block 3 can be cone-shaped, pyramidal-shaped, frustum-shaped, etc. The shielding block 1 can have a metallic surface and an inner core made of other absorbing materials, or it can be entirely made of metallic material. Furthermore, adjacent rows and columns of shielding blocks 1 are staggered. Figure 2 As shown, the "misaligned distribution" means that the horizontal positions of two adjacent rows of shielding blocks 3 are different, and the vertical heights of two adjacent columns of shielding blocks 3 are different.

[0018] like Figure 4 As shown, since the outer peripheral surfaces of each shielding block 3 face away from the outer shell 1, the outer peripheral surfaces of two adjacent shielding blocks 1 together form a wedge-shaped gap. When interfering electromagnetic waves enter this wedge-shaped gap, they will be reflected multiple times on the outer peripheral surfaces of the two adjacent shielding blocks 1. During each reflection, some of the electromagnetic wave's energy is absorbed by the shielding block 3, generating an induced current through electromagnetic induction. This induced current is then conducted to the ground through the outer shell 1; some of the induced current is also converted into heat energy and dissipated. Ultimately, the electromagnetic interference signal undergoes multiple absorptions and attenuations within the wedge-shaped gap, significantly reducing the interference signal strength.

[0019] Each shielding block 3 adopts a uniform and regular shape, which makes it easier to process. The shielding blocks 3 are uniformly shaped like a frustum. Since the side circumference of the frustum is curved, electromagnetic waves will be reflected by the shielding blocks 3 in different directions, instead of being concentrated in one direction to form intensity superposition, thereby reducing the impact on the external environment.

[0020] The shielding block 1 has a structure with a surface made of metal and an inner core made of other absorbing materials, which can improve the absorption rate of interfering electromagnetic waves and make it easier to attenuate electromagnetic waves entering the shielding block 1.

[0021] The staggered distribution of two adjacent rows and two columns of shielding blocks 1 enables the shielding blocks 1 to be arranged more densely, thereby reducing the blank area of ​​reflection.

[0022] A ring-shaped shielding strip 2 is provided on the outer surfaces of the front and rear ends of the outer shell 1 along its long axis and around the periphery of the shielding block assembly. The shielding strip 2 has a trapezoidal cross-section. The shielding strip 2 can also be selected in other shapes where its inner and outer circumferential surfaces are generally oriented away from the outer shell 1, but at least its inner circumferential surface must be the surface generally oriented away from the outer shell. The inner circumferential surface refers to the surface of the shielding strip 2 facing the shielding block assembly, and the outer circumferential surface refers to the surface of the shielding strip 2 facing away from the shielding block assembly. For example, the shielding strip 2 can be selected as a ring with a triangular or semi-circular cross-section. At least its inner circumferential surface is made of metal. The shielding strip 2 can have a structure where the surface is made of metal and the core is made of other absorbing materials, or it can be entirely made of metal. Furthermore, the shielding strip 2 is a ring composed of bent multi-segment lines.

[0023] Similar to the aforementioned principle, since the inner circumferential surface of the shielding strip 2 generally faces away from the outer shell 1, a wedge-shaped gap is formed between the inner circumferential surface of the shielding strip 2 and the outer circumferential surface of the shielding block 3 on the outside of the shielding block assembly. The interfering electromagnetic waves will be attenuated by multiple reflections between the inner circumferential surface of the shielding strip 2 and the outer circumferential surface of the adjacent shielding block 3, and the intensity of the electromagnetic interference signal will be significantly reduced.

[0024] The outer periphery of the shielding strip 2 is also set to face away from the outer shell, which can reflect the interfering electromagnetic waves at the outer periphery of the shielding strip 2 outward, further enhancing the electromagnetic shielding effect.

[0025] The shielding strip 2 is composed of multiple bent segments. The multiple bends make the outer circumference of each segment of the shielding strip 2 face different directions, thereby forming multiple electromagnetic wave reflecting surfaces at different angles, enhancing the reflection and electromagnetic wave absorption and dissipation effects.

[0026] A shielding sleeve 6 made of metal material is installed inside the wire inlet / outlet hole 5. The shielding sleeve 6 is welded to the top of the outer shell 1 inside the wire inlet / outlet hole 5. A narrow slit is left between the shielding sleeve 6 and the shell of the wire inlet / outlet hole 5. One side of the shielding sleeve 6 is fixedly connected to the conductive spring 4. A spring hole is opened on the side wall of the wire inlet / outlet hole 5. The spring hole is a slender hole that matches the shape of the conductive spring 4. The conductive spring 4 passes through the spring hole. The other end of the conductive spring 4 is fixedly connected to the shielding strip 2.

[0027] Because the metal shell at the wire inlet / outlet hole 5 is discontinuous, electromagnetic leakage is most likely to occur at the opening, allowing interfering electromagnetic waves to enter the interior of the outer shell 1. Therefore, this invention adds a shielding sleeve 6 inside the wire inlet / outlet hole 5. Both the wire inlet / outlet hole 5 and the shielding sleeve 6 are metal dome structures with an opening at the top center. The size of the shielding sleeve 6 is slightly smaller than that of the wire inlet / outlet hole 5, forming a narrow electromagnetic wave resonant cavity between them. A small amount of interfering electromagnetic waves entering the wire inlet / outlet hole 5 will resonate within the cavity, and then continuously reflect and attenuate, further enhancing the electromagnetic shielding of the area near the wire inlet / outlet hole 5. The two ends of the conductive spring 4 are connected to the shielding strip 2 and the shielding sleeve 6 respectively, making the shielding sleeve 6 and the shielding strip 2 at the same potential. The shielding strip 2 is fixedly mounted on the outer shell 1, and the outer shell 1 is grounded, thereby guiding the resonant current excited by the interfering electromagnetic waves to the ground.

[0028] Example 2:

[0029] like Figure 5 and Figure 6 As shown, Embodiment 2 of this utility model discloses another anti-interference microwave communication relay device. The only difference between Embodiment 2 and Embodiment 1 is that the shielding block 3 adopts a truncated quadrangular structure, and the two adjacent rows and two columns of shielding blocks 3 are distributed in a rectangular array (non-staggered distribution).

[0030] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model.

Claims

1. An anti-interference microwave communication relay device, comprising a housing with wire inlet / outlet holes, characterized in that: The outer surface of the outer shell is provided with a shielding block group with at least one surface made of metal material, and the outer peripheral surface of each shielding block in the shielding block group is generally oriented away from the direction of the outer shell.

2. The anti-interference microwave communication relay device according to claim 1, characterized in that: An annular shielding strip is provided on the outer surface of the outer shell of the shielding block assembly. The shielding strip has at least an inner circumferential surface made of metal material, and the inner circumferential surface of the shielding strip is generally oriented away from the direction of the outer shell.

3. The anti-interference microwave communication relay device according to claim 2, characterized in that: The outer peripheral surface of the shielding strip is made of metal, and the outer peripheral surface of the shielding strip is generally oriented away from the outer shell.

4. The anti-interference microwave communication relay device according to claim 2 or 3, characterized in that: The shielding strip is a ring composed of multiple bent line segments.

5. The anti-interference microwave communication relay device according to claim 2 or 3, characterized in that: A shielding sleeve made of metal material is installed inside the wire inlet / outlet hole. A slit is left between the shielding sleeve and the housing of the wire inlet / outlet hole. One side of the shielding sleeve is fixedly connected to a conductive spring. A spring hole is opened on the side wall of the wire inlet / outlet hole. The conductive spring passes through the spring hole, and the other end of the conductive spring is fixedly connected to the shielding strip.

6. The anti-interference microwave communication relay device according to claim 1, 2, or 3, characterized in that: The shielding blocks in two adjacent rows and two columns are staggered.

7. The anti-interference microwave communication relay device according to claim 1, 2, or 3, characterized in that: Each shielding block is conical, frustum-shaped, pyramidal, or frustum-shaped.

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