A ductile cascaded directional antenna suitable for weak signals

Abstract

This utility model relates to the field of antenna signal technology, specifically a malleable cascaded directional antenna suitable for weak signals. It includes a line loss compensator, an antenna body, and a limiting clip. The two ends of the line loss compensator are respectively fitted with the antenna body to compensate for signal attenuation during long-distance transmission. The outer side of the antenna body is equipped with a device for precise control of the signal transmission direction. The antenna body is fixed in place by the limiting clip. By connecting the line loss compensator in series between two adjacent antenna body units and achieving detachable connection through a cascade interface, the signal strength for long-distance signal transmission is improved, enhancing the overall stability of the antenna body and the stability of signal transmission.

Description

Technical Field

[0001] This utility model relates to the field of antenna signal technology, specifically to a malleable cascaded directional antenna suitable for weak signals. Background Technology

[0002] With the rapid development of mobile communication technology, 2G / 3G / 4G / 5G multi-band communication has become mainstream. The demand for signal coverage in weak signal environments such as indoor buildings, underground spaces, and remote areas is becoming increasingly urgent, especially since GPS positioning signals are severely affected by building shielding. As a core device for signal transmission and coverage, directional antennas are widely used in various weak signal scenarios. However, traditional directional antennas are gradually revealing limitations in terms of adapting to multi-band weak signal transmission, installation flexibility, and signal attenuation control. Existing antennas lack effective signal compensation mechanisms when transmitting satellite signals. As the transmission distance increases, the signal strength shows a significant attenuation trend, especially at transmission distances exceeding 30 meters, where the signal attenuation can reach 20-30 dB. This fails to meet the signal strength requirements in weak signal scenarios. Furthermore, while traditional rigid antennas are structurally stable, they cannot adapt to the shape adjustment requirements of complex installation environments. Although ordinary flexible antennas have a certain bending capability, their structural stability is insufficient, and they are prone to deformation during long-term use, affecting signal transmission performance. Therefore, there is an urgent need to design a malleable cascaded directional antenna suitable for weak signals to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a malleable cascaded directional antenna suitable for weak signals, in order to solve the problems mentioned in the background art, such as the significant attenuation trend of signal strength with the increase of transmission distance, especially when the transmission distance exceeds 30 meters, the signal attenuation can reach 20-30dB, which cannot meet the signal strength requirements in weak signal scenarios and the structural stability is insufficient. Furthermore, the antenna is prone to deformation during long-term use, which affects the signal transmission effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a malleable cascaded directional antenna suitable for weak signals, comprising a line loss compensator, an antenna body, a directional housing, and a limiting clip. The two ends of the line loss compensator are respectively fitted with the antenna body to compensate for signal attenuation during long-distance transmission. The outer side of the antenna body is provided with a directional housing for precise control of the signal transmission direction. The directional housing is installed and fixed by the limiting clip.

[0005] Preferably, a cascaded female connector is installed at each end of the line loss compensator, and the cascaded female connector is connected to the antenna body.

[0006] Preferably, the insertion ends of the two sets of antenna bodies are equipped with cascaded male connectors, which are adapted to and connected with cascaded female connectors, and are adapted to and installed with different antenna bodies.

[0007] Preferably, the antenna body is composed of a flexible inner conductor, a wide-angle radiation mode copper foil outer conductor, and a low-smoke halogen-free flame-retardant polyolefin outer sheath. The outer side of the flexible inner conductor is wrapped by the wide-angle radiation mode copper foil outer conductor, and the wide-angle radiation mode copper foil outer conductor is wrapped by the low-smoke halogen-free flame-retardant polyolefin outer sheath.

[0008] Preferably, a highly conductive physical foamed insulation layer is used to cover the flexible inner conductor and the wide-angle radiating mode copper foil outer conductor, and a signal radiation window is opened at the center of the front end of the low-smoke halogen-free flame-retardant polyolefin outer sheath.

[0009] Preferably, the inner wall of the directional housing is laterally fixed with three sets of directional slide rails, and the inner diameter of the directional housing is larger than the inner diameter of the antenna body.

[0010] Preferably, the limiting fastener includes a limiting buckle and sliders. Three sets of sliders are fixed to the rear side of the limiting buckle. The three sets of sliders are installed in the directional slide rail. The limiting buckle includes a circular sleeve, a bearing, and connecting pieces. The circular sleeve is sleeved on the left end of the antenna body. The bearing is fixed to the outer wall of the circular sleeve and rotates on the outer wall of the circular sleeve. Four sets of opposing connecting pieces are installed on the sides of the bearing and the circular sleeve. Two sets of the connecting pieces are fixed by screws.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This is a malleable cascaded directional antenna suitable for weak signals. By setting a line loss compensator in series between two adjacent antenna main units, a detachable connection is achieved through a cascade interface, thereby improving the signal strength for long-distance signal transmission. The antenna main body adopts a flexible inner conductor and a wide-angle radiation mode copper foil outer conductor, and fills the connection with a high-conductivity physical foam insulation layer to improve the overall stability of the antenna main body and enhance the stability of signal transmission.

[0012] This is a malleable cascaded directional antenna suitable for weak signals. By using a directional housing with a semi-circular or elliptical cross-section, it is beneficial for the antenna body to transmit signals in a directional manner, reducing the problem of uneven signal coverage caused by the external environment. The directional housing is used in conjunction with a limiting buckle, which allows for quick disassembly and convenient position adjustment. Attached Figure Description

[0013] Figure 1 This is a frontal disassembled view of the present invention; Figure 2 This is a schematic diagram showing the splitting of the main body of this utility model on both sides; Figure 3 This is a front view schematic diagram of the main structure of the antenna of this utility model; Figure 4 This is a front view of the antenna body and the directional housing structure of this utility model; Figure 5 This is a side view of the limiting clip of this utility model.

[0014] In the diagram: 1. Line loss compensator; 11. Cascaded female connector; 2. Antenna body; 201. Flexible inner conductor; 202. High conductivity physical foam insulation layer; 203. Wide-angle radiation mode copper foil outer conductor; 204. Low smoke halogen-free flame-retardant polyolefin outer sheath; 205. Signal radiation window; 21. Cascaded male connector; 3. Directional housing; 31. Directional slide rail; 4. Limiting clip; 41. Limiting buckle; 411. Circular sleeve; 412. Bearing; 413. Connecting piece; 414. Screw; 42. Slider. Detailed Implementation

[0015] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-5 One embodiment provided by this utility model: A malleable cascaded directional antenna suitable for weak signals includes a line loss compensator 1, an antenna body 2, a directional housing 3, and a limiting clip 4. The antenna body 2 is fitted to both ends of the line loss compensator 1 to compensate for signal attenuation during long-distance transmission. The directional housing 3 is provided on the outside of the antenna body 2 to precisely control the signal transmission direction. The directional housing 3 is installed and fixed by the limiting clip 4.

[0017] Furthermore, cascaded female connectors 11 are installed at both ends of the line loss compensator 1, and the cascaded female connectors 11 are connected to the antenna body 2. The line loss compensator has a built-in high-performance low-noise amplifier and an automatic gain control circuit, which can detect the input signal strength in real time and automatically adjust the gain to ensure that the output signal strength is stable within the target range.

[0018] As a further feature of this invention, the insertion ends of the two antenna bodies 2 are equipped with cascaded male connectors 21. The cascaded male connectors 21 are adapted and connected to the cascaded female connectors 11. The cascaded male connectors 21 are also adapted and installed with different antenna bodies 2. The interface modules are fixedly connected to both ends of the antenna body units, supporting the cascade splicing of multiple antenna body units. The interfaces employ precision machining processes to ensure good impedance matching and low insertion loss.

[0019] Furthermore, the antenna body 2 is composed of a flexible inner conductor 201, a wide-angle radiation mode copper foil outer conductor 203, and a low-smoke halogen-free flame-retardant polyolefin outer sheath 204. The outer side of the flexible inner conductor 201 is wrapped by the wide-angle radiation mode copper foil outer conductor 203, which is then wrapped by the low-smoke halogen-free flame-retardant polyolefin outer sheath 204. A high-conductivity physical foam insulation layer 202 covers the space between the flexible inner conductor 201 and the wide-angle radiation mode copper foil outer conductor 203. A signal radiation window 205 is opened at the center of the front end of the low-smoke halogen-free flame-retardant polyolefin outer sheath 204. Through the above design, a 7 / 8" flexible coaxial leaky cable is used as the main body, which has both excellent bending performance and maintains sufficient structural strength. The cable outer sheath is made of low-smoke halogen-free flame-retardant material, which meets environmental protection requirements.

[0020] Furthermore, three sets of directional slide rails 31 are horizontally fixed on the inner wall of the directional housing 3. The inner diameter of the directional housing 3 is larger than the inner diameter of the antenna body 2. This design enables precise directional transmission within a range of 30°-120°, concentrating signal energy in the target area and improving energy utilization by more than 60%. At the same time, it effectively reduces signal interference to non-target areas and improves the overall electromagnetic environment quality.

[0021] Furthermore, the limiting clip 4 includes a limiting buckle 41 and a slider 42. Three sets of sliders 42 are fixed to the rear side of the limiting buckle 41. The three sets of sliders 42 are installed in the directional slide rail 31. The limiting buckle 41 includes a circular sleeve 411, a bearing 412, and a connecting piece 413. The circular sleeve 411 is fitted onto the left end of the antenna body 2. The bearing 412 is fixed to the outer wall of the circular sleeve 411. The bearing 412 rotates on the outer wall of the circular sleeve 411. Four sets of opposing connecting pieces 413 are installed on the sides of both the bearing 412 and the circular sleeve 411. The two sets of mating connecting pieces 413 are fixed by screws 414. By using engineering plastics with low dielectric constant and low loss, additional loss to signal transmission is avoided. At the same time, the bearing can quickly adjust the angle of the directional sleeve, thereby realizing the adjustment of the signal radiation angle.

[0022] Working principle: After the signal is output from the transmitting equipment, it first enters the first-stage antenna body 2 for transmission. Due to long-distance transmission and electromagnetic wave leakage radiation, the signal will be attenuated. When the signal transmission is connected to the cascaded female interface 11 on the left end of the line loss compensator 1 through the cascaded male interface 21 installed on the antenna body 2, the attenuated signal is amplified and compensated by the line loss compensator 1. The compensated signal continues to be transmitted through the next stage antenna body unit. When the antenna system needs to cover a large area, multiple antenna units 2 and line loss compensators 1 can be connected in series through the cascade interface. Each line loss compensator 1 works independently, monitoring and compensating for signal attenuation in its front-end transmission link in real time. The antenna body 2 uses a flexible coaxial leaky cable, which can be bent, coiled, and shaped according to the actual installation environment. When installing the antenna body 2, the circular sleeve 411 can be fitted onto the left end of the antenna body 2. Then, the bearing 412 is connected and fixed to the circular sleeve 411 by screws 414 and connecting pieces 413. The three sets of sliders 42 fixed on the side of the bearing 412 are aligned with the directional slide rail 31 inside the directional housing 3. When the directional housing 3 needs to be adjusted, the screws 414 are unscrewed and the bearing 412 is rotated to drive the directional housing 3 to rotate, thereby achieving signal angle adjustment. The above is the complete working principle of this utility model.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A malleable cascaded directional antenna suitable for weak signals, comprising a line loss compensator (1), an antenna body (2), a directional housing (3), and a limiting clip (4), characterized in that: The two ends of the line loss compensator (1) are respectively fitted with antenna bodies (2) to compensate for signal attenuation in long-distance transmission. The outer side of the antenna body (2) is provided with a directional sleeve (3) to accurately control the signal transmission direction. The directional sleeve (3) is installed and fixed by a limiting clip (4).

2. The malleable cascaded directional antenna suitable for weak signals according to claim 1, characterized in that: The line loss compensator (1) has a cascaded female connector (11) installed at both ends, and the cascaded female connector (11) is connected to the antenna body (2).

3. A ductile cascaded directional antenna suitable for weak signals according to claim 1, characterized in that: The two sets of antenna bodies (2) are equipped with cascaded male connectors (21) at their insertion ends. The cascaded male connectors (21) are adapted to be connected to the cascaded female connectors (11). The cascaded male connectors (21) are adapted to be installed with different antenna bodies (2).

4. A ductile cascaded directional antenna suitable for weak signals according to claim 1, characterized in that: The antenna body (2) is composed of a flexible inner conductor (201), a wide-angle radiation mode copper foil outer conductor (203), and a low-smoke halogen-free flame-retardant polyolefin outer sheath (204). The outer side of the flexible inner conductor (201) is wrapped by the wide-angle radiation mode copper foil outer conductor (203), and the wide-angle radiation mode copper foil outer conductor (203) is wrapped by the low-smoke halogen-free flame-retardant polyolefin outer sheath (204).

5. A ductile cascaded directional antenna suitable for weak signals according to claim 4, characterized in that: The flexible inner conductor (201) and the wide-angle radiation mode copper foil outer conductor (203) are covered by a high-conductivity physical foam insulation layer (202), and a signal radiation window (205) is opened at the front center of the low-smoke halogen-free flame-retardant polyolefin outer sheath (204).

6. A ductile cascaded directional antenna suitable for weak signals according to claim 1, characterized in that: The inner wall of the directional housing (3) is horizontally fixed with three sets of directional slide rails (31), and the inner diameter of the directional housing (3) is larger than the inner diameter of the antenna body (2).

7. A ductile cascaded directional antenna suitable for weak signals according to claim 1, characterized in that: The limiting buckle (4) includes a limiting buckle (41) and a slider (42). Three sets of sliders (42) are fixed on the rear side of the limiting buckle (41). The three sets of sliders (42) are installed in the directional slide rail (31). The limiting buckle (41) includes a circular sleeve (411), a bearing (412) and a connecting piece (413). The circular sleeve (411) is fitted on the left end of the antenna body (2). The bearing (412) is fixed on the outer wall of the circular sleeve (411). The bearing (412) rotates on the outer wall of the circular sleeve (411). Four sets of opposing connecting pieces (413) are installed on the sides of the bearing (412) and the circular sleeve (411). The two sets of connecting pieces (413) are fixed by screws (414).

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