Single-polarized omnidirectional ceiling antenna

Abstract

According to the single-polarized omnidirectional ceiling antenna provided by the utility model, the micro-arc oxidation ceramic layer is arranged on the surface of the aluminum radiation oscillator, so that oxidation and corrosion of the aluminum radiation oscillator are effectively prevented, and the copper plating layer is arranged on the micro-arc oxidation ceramic layer, so that the conductivity of the aluminum radiation oscillator is improved, and the signal transmission quality of the antenna is improved. And finally, a layer of nickel-phosphorus alloy is plated on the copper plating layer, so that the radiation oscillator has good wear resistance and hardness, the durability and the stability of the radiation oscillator are improved, the cost is greatly reduced compared with a copper radiation oscillator, and the radiation oscillator is suitable for different use environments. In addition, a plurality of copper short-circuit sheets coated with ferrite wave-absorbing coatings are arranged on the peripheral side of the radiation oscillator at equal intervals, so that the performance of the antenna is further optimized, and the anti-interference capability and the signal transmission efficiency of the antenna are improved.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and in particular to a single-polarized omnidirectional ceiling antenna. Background Technology

[0002] A single-polarization omnidirectional ceiling antenna is a widely used device in wireless communication systems. It is designed to provide omnidirectional signal coverage and supports signal transmission only in a single polarization direction. This type of antenna is typically installed on the ceiling or walls of a building to provide indoor wireless communication services such as mobile communication and wireless local area networks (WLANs).

[0003] Traditional single-polarized omnidirectional ceiling antennas typically use copper or aluminum radiating elements. While copper radiating elements offer good conductivity and mechanical properties, they are expensive and complex to manufacture. Aluminum radiating elements, on the other hand, are less expensive, but they are prone to oxidation and have insufficient conductivity, hardness, and wear resistance. These issues reduce the signal transmission quality of antennas using aluminum radiating elements and limit their application in various environments.

[0004] Therefore, it is necessary to provide a single-polarized omnidirectional ceiling antenna with a radiating oscillator that has good conductivity, wear resistance, and is not easily oxidized. Utility Model Content

[0005] Based on the technical problems existing in the radiating oscillators of different materials in the prior art, this utility model provides a single-polarized omnidirectional ceiling antenna.

[0006] A single-polarized omnidirectional ceiling-mounted antenna includes a reflector plate and a radiating element disposed on the reflector plate. A coaxial connector is provided on the reflector plate, and a feed post is fixedly connected to the top of the coaxial connector. The feed post penetrates the reflector plate and is fixedly connected to the bottom of the radiating element. A coaxial cable is fixedly connected to the bottom of the coaxial connector, and a connector is provided at the end of the coaxial cable. The radiating element is an aluminum radiating element, and a micro-arc oxide ceramic layer, a copper plating layer, and a nickel-phosphorus alloy layer are sequentially disposed on the outer surface of the aluminum radiating element. A plurality of short-circuit plates are equidistantly disposed on the outer periphery of the radiating element. One end of each short-circuit plate is connected to the outer surface of the radiating element, and the other end is connected to the reflector plate. Each short-circuit plate is a copper short-circuit plate with a ferrite absorbing coating on its surface.

[0007] Furthermore, the radiating oscillator includes a cylindrical oscillator and a conical oscillator installed below the cylindrical oscillator. The cylindrical oscillator and the conical oscillator are integrally formed and the conical oscillator is connected to the feed post. The upper part of the cylindrical oscillator is provided with an inwardly tapered opening.

[0008] Furthermore, the cylindrical vibrator has three circular holes equidistantly spaced along its outer periphery, and the conical vibrator has three rectangular holes equidistantly spaced along its outer periphery.

[0009] Furthermore, there are three short-circuit plates, and the short-circuit plates are bent at an angle of 120°.

[0010] Furthermore, it also includes an antenna cover, which is disposed on the outside of the radiating element and the short-circuiting plate and fixed to the reflective base plate.

[0011] Furthermore, the radome has several through-holes for heat dissipation, and each of the heat dissipation holes is equipped with a dust filter.

[0012] Furthermore, the radome is made of glass fiber reinforced epoxy resin, and the inner surface of the radome is provided with an inner paint layer, and the outer surface of the radome is provided with an outer paint layer.

[0013] Furthermore, the coaxial cable includes a core body and an insulation layer, an inner shielding layer, and an elastic temperature-resistant protective layer sequentially disposed outside the core body. The core body includes a core and a plurality of flexible oxygen-free copper conductors disposed around the core.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a single-polarization omnidirectional ceiling-mounted antenna. By setting a micro-arc oxide ceramic layer on the surface of the aluminum radiating element, the oxidation and corrosion of the aluminum radiating element are effectively prevented. A copper plating layer is then set on the micro-arc oxide ceramic layer to improve the conductivity of the aluminum radiating element, thereby improving the signal transmission quality of the antenna. Finally, a nickel-phosphorus alloy layer is plated on the copper plating layer, which gives the radiating element good wear resistance and hardness, improves the durability and stability of the radiating element, and significantly reduces the cost compared to copper radiating elements, making it suitable for different usage environments. In addition, several copper shorting plates coated with ferrite absorbing coating are equidistantly arranged on the outer periphery of the radiating element to further optimize the antenna performance and improve its anti-interference capability and signal transmission efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a single-polarization omnidirectional ceiling antenna provided in Embodiment 1;

[0016] Figure 2 A partial cross-sectional structural diagram of a radiating oscillator;

[0017] Figure 3 This is a schematic diagram of the structure of a single-polarization omnidirectional ceiling-mounted antenna provided in Embodiment 2;

[0018] Attached Figure Labels

[0019] 1. Reflector base plate; 2. Radiating element; 21. Cylindrical element; 22. Conical element; 23. Circular hole; 24. Rectangular hole; 3. Coaxial connector; 31. Feed post; 4. Coaxial cable; 5. N-type plug; 6. Micro-arc oxide ceramic layer; 7. Copper plating layer; 8. Nickel-phosphorus alloy layer; 9. Shorting piece; 10. Radome; 11. Heat dissipation hole. Detailed Implementation

[0020] To provide a more detailed description of this utility model, the following description is provided in conjunction with the accompanying drawings. It should be noted that the embodiments described below are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. Example 1

[0021] refer to Figure 1 As shown, a single-polarization omnidirectional ceiling-mounted antenna includes a reflector plate 1 and a radiating element 2 disposed on the reflector plate 1. A coaxial connector 3 is provided on the reflector plate 1. A feed post 31 is fixedly connected to the top end of the coaxial connector 3. The feed post 31 penetrates the reflector plate and is fixedly connected to the bottom end of the radiating element 2. A coaxial cable 4 is fixedly connected to the bottom end of the coaxial connector 3. A connector 5 is provided at the end of the coaxial cable 4. In this embodiment, the connector 5 is an N-type connector.

[0022] Specifically, refer to Figure 1 and Figure 2 As shown, the radiating oscillator 2 includes a cylindrical oscillator 21 and a conical oscillator 22 installed below the cylindrical oscillator 21. The cylindrical oscillator 21 and the conical oscillator 22 are integrally formed and the conical oscillator 22 is connected to the feed post 31. The upper part of the cylindrical oscillator 22 is provided with an inwardly tapered opening.

[0023] The cylindrical vibrator 21 has three circular holes 23 equidistantly arranged along its outer periphery, and the conical vibrator 22 has three rectangular holes 24 equidistantly arranged along its outer periphery.

[0024] The circular aperture 23 of the cylindrical dipole and the rectangular aperture 24 of the conical dipole can optimize current distribution and reduce sidelobe interference by adjusting the electromagnetic wave propagation path. The equidistantly distributed aperture structure helps to balance the radiation intensity in all directions on the horizontal plane, optimize the antenna's non-circularity, and solve the problem of uneven signal coverage.

[0025] The radiating oscillator 2 is an aluminum radiating oscillator, and a micro-arc oxide ceramic layer 6, a copper plating layer 7, and a nickel-phosphorus alloy layer 8 are sequentially disposed on the outer surface of the aluminum radiating oscillator.

[0026] By setting a micro-arc oxidation ceramic layer 6 on the surface of the aluminum radiating element, oxidation and corrosion of the aluminum radiating element are effectively prevented. A copper plating layer 7 is then applied above the micro-arc oxidation ceramic layer 6 to improve the conductivity of the aluminum radiating element, thereby improving the signal transmission quality of the antenna. Finally, a nickel-phosphorus alloy layer 8 is plated on top of the copper plating layer 7, giving the radiating element 2 good wear resistance and hardness, improving its durability and stability, and significantly reducing its cost compared to copper radiating elements, making it suitable for various application environments.

[0027] A plurality of short-circuit plates 9 are equidistantly arranged on the outer periphery of the radiating oscillator 2. One end of the short-circuit plate 9 is connected to the outer surface of the radiating oscillator 2, and the other end is connected to the reflective base plate 1. The short-circuit plate 9 is a copper short-circuit plate with a ferrite absorbing coating on its surface.

[0028] The short-circuit plate 9 guides the end current of the radiating oscillator 2 to the reflective base plate 1 through a copper conductive path, forming a controllable current return path and reducing high-frequency current reflection at the end of the oscillator. The ferrite absorbing coating absorbs the edge high-frequency harmonic energy through magnetic loss, suppressing near-field coupling interference between the radiating oscillator 2 and the reflective base plate 1.

[0029] The cable has three shorting plates 9, each bent at a 120° angle. These three shorting plates 9 are evenly spaced at 120° intervals, forming a symmetrical support structure that evenly distributes stress across each shorting plate 9 when the cable bends.

[0030] The coaxial cable 4 includes a core body and an insulation layer, an inner shielding layer, and an elastic temperature-resistant protective layer sequentially disposed outside the core body. The core body includes a core and a plurality of flexible oxygen-free copper conductors disposed around the core.

[0031] The synergistic design of the flexible oxygen-free copper conductor and the cable core significantly improves signal transmission efficiency and mechanical stability, adapting to complex installation environments. The insulation layer ensures signal integrity, while the inner shielding layer effectively resists electromagnetic interference. The elastic temperature-resistant protective layer endows the coaxial cable 4 with high tensile strength, resistance to extreme temperatures, and corrosion resistance, which helps extend the service life of the coaxial cable 4. Example 2

[0032] refer to Figure 3 As shown, the difference between Embodiment 2 and Embodiment 1 is that Embodiment 2 further includes an antenna cover 10, which covers the outside of the radiating element 2 and the short-circuit plate 9 and is fixed on the reflective base plate 1.

[0033] The radome 10 is placed on the outside of the radiating element 2 and the shorting piece 9, effectively protecting these critical antenna components from physical damage from the external environment, such as impact, wear, and corrosion, thus extending the service life of the antenna.

[0034] The antenna cover 10 has several through-holes 11, and each of the through-holes 11 is equipped with a dust filter. The through-holes 11 on the antenna cover 10 enhance the antenna's heat dissipation capacity, helping to dissipate the heat generated inside the antenna in a timely manner and preventing performance degradation or damage due to overheating.

[0035] Each heat dissipation hole 11 is equipped with a dust filter, which effectively prevents dust, dirt and other impurities from entering the antenna, keeping the internal environment of the antenna clean and helping to maintain the stable performance of the antenna.

[0036] The radome 10 is made of glass fiber reinforced epoxy resin, and the inner surface of the radome 10 is provided with an inner paint layer, and the outer surface of the radome 10 is provided with an outer paint layer.

[0037] Glass fiber reinforced epoxy resin possesses high strength and low density, reducing weight by 40%-60% compared to traditional metal covers, significantly lowering the antenna system load, and enhancing wave transmission. In this embodiment, the outer coating layer uses a fluoropolyurethane matte enamel, and the inner coating layer uses a zinc yellow acrylic polyurethane primer.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model and do not limit the utility model to the specific implementations described. Obviously, other modifications and variations can be made based on the content of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. They are not intended to limit the utility model, and any simple modifications to this utility model fall within the protection scope of this utility model.

Claims

1. A single-polarization omnidirectional ceiling-mounted antenna, comprising a reflective substrate and a radiating element disposed on the reflective substrate, characterized in that, A coaxial connector is provided on the reflective base plate. A feed post is fixedly connected to the top of the coaxial connector. The feed post passes through the reflective base plate and is fixedly connected to the bottom of the radiating oscillator. A coaxial cable is fixedly connected to the bottom of the coaxial connector. A connector is provided at the end of the coaxial cable. The radiating oscillator is an aluminum radiating oscillator, and the outer surface of the aluminum radiating oscillator is sequentially provided with a micro-arc oxide ceramic layer, a copper plating layer, and a nickel-phosphorus alloy layer. A plurality of short-circuit plates are equidistantly arranged on the outer periphery of the radiating oscillator. One end of each short-circuit plate is connected to the outer surface of the radiating oscillator, and the other end is connected to the reflective base plate. Furthermore, the short-circuit plate is a copper short-circuit plate with a ferrite absorbing coating on its surface.

2. The single-polarization omnidirectional ceiling-mounted antenna according to claim 1, characterized in that, The radiating oscillator includes a cylindrical oscillator and a conical oscillator installed below the cylindrical oscillator. The cylindrical oscillator and the conical oscillator are integrally formed and the conical oscillator is connected to the feed post. The upper part of the cylindrical oscillator is provided with an inwardly tapered opening.

3. A single-polarization omnidirectional ceiling-mounted antenna according to claim 2, characterized in that, The cylindrical vibrator has three circular holes equidistantly spaced along its outer periphery, and the conical vibrator has three rectangular holes equidistantly spaced along its outer periphery.

4. The single-polarization omnidirectional ceiling-mounted antenna according to claim 1, characterized in that, There are three short-circuit plates in total, and the short-circuit plates are bent at an angle of 120°.

5. A single-polarization omnidirectional ceiling-mounted antenna according to claim 1, characterized in that, It also includes an antenna cover, which is placed over the outside of the radiating element and the short-circuiting plate and fixed to the reflective base plate.

6. A single-polarization omnidirectional ceiling-mounted antenna according to claim 5, characterized in that, The radome has several through-holes for heat dissipation, and each of the heat dissipation holes is equipped with a dust filter.

7. A single-polarization omnidirectional ceiling-mounted antenna according to claim 5, characterized in that, The radome is made of glass fiber reinforced epoxy resin, and the inner surface of the radome is provided with an inner paint layer, and the outer surface of the radome is provided with an outer paint layer.

8. A single-polarization omnidirectional ceiling-mounted antenna according to claim 1, characterized in that, The coaxial cable includes a core body and an insulation layer, an inner shielding layer, and an elastic temperature-resistant protective layer sequentially disposed outside the core body. The core body includes a core and a plurality of flexible oxygen-free copper conductors disposed around the core.

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