Beidou full-band array antenna

Abstract

The utility model discloses a Beidou full-band array antenna, which relates to the technical field of array antennas and comprises a metal tray, a circular center antenna is mounted in the middle of the upper side of the metal tray, and a plurality of B3-band unit antennas and a plurality of S-band unit antennas are mounted on the upper side of the metal tray at equal intervals; a plurality of communicated annular heat dissipation cavities are formed in the metal containing disc, a plurality of annular heat dissipation grooves are formed in the upper side walls of the annular heat dissipation cavities, and a circular heat dissipation cavity is formed in the middle of the metal containing disc; the adsorption end of the heat absorption assembly is connected with the circular heat dissipation cavity. According to the array antenna, heat in the circular heat dissipation cavity and the annular heat dissipation cavity is extracted through the heat absorption assembly, heat generated by multiple groups of array antennas can be extracted synchronously, the heat dissipation effect of the array antennas is improved, the annular heat dissipation grooves are formed in the upper side wall of the annular heat dissipation cavity, and the heat dissipation efficiency of the array antennas is improved. And a plurality of heat dissipation fins are fixed on the top wall of the circular heat dissipation cavity, so that the heat dissipation area is increased, and the heat dissipation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of array antenna technology, specifically to a BeiDou full-band array antenna. Background Technology

[0002] The BeiDou full-band array antenna is an antenna device used in the BeiDou satellite navigation system. It can cover multiple operating frequency bands of the BeiDou system, such as B1, B2, and B3. This is achieved by employing appropriate antenna structures and design techniques, enabling the antenna to maintain good electrical performance over a wide frequency range, thus achieving effective reception and transmission of signals from different frequency bands.

[0003] For example, the patent with application number CN202410041101.7 discloses a Beidou high-precision anti-interference array antenna. Although the patent achieves anti-interference of the array antenna through isolation suppressors and choke baffles, the array antennas in the patent are all distributed on the surface of the metal reflective mounting disk. As a result, the heat generated by multiple array antennas will affect each other and the heat dissipation effect is poor, which can easily cause high temperature damage to the unit antennas in different positions. Utility Model Content

[0004] The purpose of this invention is to provide a BeiDou full-band array antenna to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a BeiDou full-band array antenna, comprising:

[0006] A metal tray is provided, with a circular central antenna mounted on the upper center of the metal tray. A first choke ring plate and a second choke ring plate are sleeved on the outer side of the circular central antenna. Multiple B3 band unit antennas and multiple S band unit antennas are installed at equal intervals on the upper side of the metal tray. An isolation suppression frame is provided between the B3 band unit antennas and the adjacent S band unit antennas.

[0007] The metal tray has multiple interconnected annular heat dissipation cavities, and the upper sidewall of each annular heat dissipation cavity has multiple annular heat dissipation grooves. A circular heat dissipation cavity is formed in the middle of the metal tray, and the circular heat dissipation cavity is interconnected with the annular heat dissipation grooves.

[0008] A bottom cover is installed at the bottom of a metal tray. A heat-absorbing component is installed inside the bottom cover, and the adsorption end of the heat-absorbing component is connected to a circular heat dissipation cavity.

[0009] Preferably, the diameters of the plurality of annular heat dissipation cavities are all different, the central axis of the plurality of annular heat dissipation cavities coincides with the central axis of the circular heat dissipation cavity, a plurality of first connecting channels connect two adjacent annular heat dissipation cavities, and a plurality of second connecting channels connect the circular heat dissipation cavity to its adjacent annular heat dissipation cavity.

[0010] Preferably, the top wall of the circular heat dissipation cavity is fixed with multiple heat dissipation fins, which improves heat dissipation efficiency.

[0011] Preferably, a heat absorption port is provided in the lower center of the circular heat dissipation cavity. The heat absorption assembly includes an air pump, the air pump's suction end is connected to a heat absorption pipe, the heat absorption pipe is connected to the heat absorption port, and the air pump's output end is connected to a heat exhaust cylinder. The end of the heat exhaust cylinder away from the air pump extends out of the bottom cover through the side wall of the bottom cover. The air pump draws air and heat from the circular heat dissipation cavity through the heat absorption pipe, thereby drawing air and heat from the annular heat dissipation cavity and discharging them through the heat exhaust cylinder.

[0012] Preferably, a filter screen is installed in the end port of the heat dissipation cylinder that extends outside the bottom cover, so as to play an interception role.

[0013] Preferably, the upper edge of the metal tray is provided with a plurality of outward suction holes at equal intervals. The outward suction holes are connected to the annular heat dissipation cavity located on the outermost side. The annular suction of the outward suction holes can enable the entire array antenna to have a negative pressure shroud with dustproof function.

[0014] Preferably, the second choke ring plate is sleeved on the outside of the first choke ring plate, which can effectively isolate the interference of the B3 band unit antenna and the S band unit antenna to the circular center antenna, and improve the anti-interference capability of the circular center antenna.

[0015] An isolation slot is provided on the upper side of the isolation and suppression frame. The isolation and suppression frame is connected to the second choke ring plate, which can effectively isolate the mutual interference between the B3 band unit antenna and the S band unit antenna, thereby improving the anti-interference capability of the entire array antenna.

[0016] Preferably, the number of B3 band unit antennas is the same as the number of S band unit antennas, and the B3 band unit antennas and S band unit antennas are arranged at intervals.

[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0018] 1. A circular heat dissipation cavity and multiple interconnected annular heat dissipation cavities are provided inside the metal tray. The circular heat dissipation cavity and the annular heat dissipation cavity are interconnected. The heat is extracted from the circular heat dissipation cavity and the annular heat dissipation cavity by the heat absorption component, which can simultaneously extract the heat generated by multiple array antennas and improve the heat dissipation effect of the array antenna.

[0019] 2. By providing multiple annular heat dissipation grooves on the upper side wall of the annular heat dissipation cavity and fixing multiple heat dissipation fins on the top wall of the circular heat dissipation cavity, the heat dissipation area is increased and the heat dissipation effect is improved.

[0020] 3. By installing a first choke ring plate and a second choke ring plate on the outside of the circular central antenna, and by providing an isolation suppression frame between the B3 band unit antenna and the S band unit antenna, with an isolation slot on the upper side of the isolation suppression frame, the anti-interference capability of the entire array antenna is improved, and the stability during operation is enhanced. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is another schematic diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the bottom cover structure of this utility model;

[0025] Figure 4 This is a three-dimensional anatomical diagram of the metal tray of this utility model;

[0026] Figure 5 This is a three-dimensional anatomical view of the metal tray of this utility model from another angle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Metal tray; 2. Circular center antenna; 3. First choke ring plate; 4. Second choke ring plate; 5. B3 band unit antenna; 6. S band unit antenna; 7. Isolation and suppression frame; 8. Isolation slot; 9. Annular heat dissipation cavity; 10. Annular heat dissipation slot; 11. Circular heat dissipation cavity; 12. First connecting channel; 13. Second connecting channel; 14. Heat dissipation fins; 15. Heat absorption port; 16. Air pump; 17. Heat absorption pipe; 18. Heat exhaust cylinder; 19. Filter screen; 20. Outwardly expanding suction hole; 21. Base cover. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] This utility model provides, for example Figure 1The BeiDou full-band array antenna shown includes:

[0031] A metal tray 1 is provided, with a circular central antenna 2 installed on the upper center of the metal tray 1. A first choke ring plate 3 and a second choke ring plate 4 are fitted on the outer side of the circular central antenna 2. Multiple B3 band unit antennas 5 and multiple S band unit antennas 6 are installed at equal intervals on the upper side of the metal tray 1. An isolation suppression frame 7 is provided between the B3 band unit antennas 5 and the adjacent S band unit antennas 6.

[0032] The second choke ring plate 4 is sleeved on the outside of the first choke ring plate 3, which can effectively isolate the interference of the B3 band unit antenna 5 and the S band unit antenna 6 to the circular center antenna 2, and improve the anti-interference capability of the circular center antenna 2.

[0033] An isolation slot 8 is provided on the upper side of the isolation and suppression frame 7. The isolation and suppression frame 7 is connected to the second choke ring plate 4, which can effectively isolate the mutual interference between the B3 band unit antenna 5 and the S band unit antenna 6, and improve the anti-interference capability of the entire array antenna.

[0034] The number of B3 band element antennas 5 is the same as the number of S band element antennas 6, and the B3 band element antennas 5 and S band element antennas 6 are arranged alternately.

[0035] In this invention, by sleeved with a first choke ring plate 3 and a second choke ring plate 4 on the outside of the circular central antenna 2, the arrangement of the first choke ring plate 3 and the second choke ring plate 4 can effectively isolate the interference of the B3 band unit antenna 5 and the S band unit antenna 6 to the circular central antenna 2, thereby improving the anti-interference capability of the circular central antenna 2. An isolation suppression frame 7 is provided between the B3 band unit antenna 5 and the adjacent S band unit antenna 6, and an isolation groove 8 is provided on the upper side of the isolation suppression frame 7, which can effectively isolate the mutual interference between the B3 band unit antenna 5 and the S band unit antenna 6, thereby improving the anti-interference capability of the entire array antenna.

[0036] like Figures 1 to 5 The metal tray 1 has multiple interconnected annular heat dissipation cavities 9, and multiple annular heat dissipation grooves 10 are provided on the upper side wall of the annular heat dissipation cavity 9. A circular heat dissipation cavity 11 is provided in the middle of the metal tray 1, and the circular heat dissipation cavity 11 is interconnected with the annular heat dissipation grooves 10.

[0037] The bottom cover 21 is installed at the bottom of the metal tray 1. A heat-absorbing component is installed inside the bottom cover 21, and the adsorption end of the heat-absorbing component is connected to the circular heat dissipation cavity 11.

[0038] The diameters of the multiple annular heat dissipation cavities 9 are all different. The central axis of the multiple annular heat dissipation cavities 9 coincides with the central axis of the circular heat dissipation cavity 11. Multiple first connecting channels 12 connect two adjacent annular heat dissipation cavities 9. Multiple second connecting channels 13 connect the circular heat dissipation cavity 11 and its adjacent annular heat dissipation cavity 9.

[0039] Multiple heat dissipation fins 14 are fixed to the top wall of the circular heat dissipation cavity 11, which improves heat dissipation efficiency.

[0040] A heat absorption port 15 is provided in the lower center of the circular heat dissipation cavity 11. The heat absorption assembly includes a vacuum pump 16. The vacuum pump 16 is connected to a heat absorption pipe 17, which is connected to the heat absorption port 15. The output end of the vacuum pump 16 is connected to a heat exhaust cylinder 18. The end of the heat exhaust cylinder 18 away from the vacuum pump 16 extends out of the bottom cover 21 through the side wall of the bottom cover 21. The vacuum pump 16 draws air and heat from the circular heat dissipation cavity 11 through the heat absorption pipe 17, thereby drawing air and heat from the annular heat dissipation cavity 9, and dissipating them through the heat exhaust cylinder 18.

[0041] A filter screen 19 is installed in the end port of the heat dissipation cylinder 18 that extends outside the bottom cover 21, which serves to intercept the heat.

[0042] Multiple outward suction holes 20 are evenly spaced on the upper edge of the metal tray 1. The outward suction holes 20 are connected to the outermost annular heat dissipation cavity 9. The annular suction of the outward suction holes 20 can enable the entire array antenna to have a negative pressure shroud with dustproof function.

[0043] In this invention, a circular heat dissipation cavity 11 and multiple interconnected annular heat dissipation cavities 9 are provided within the metal tray 1. The circular heat dissipation cavity 11 and the annular heat dissipation cavity 9 are interconnected. The air pump 16 in the heat absorption assembly operates, and the air pump 16 absorbs air and heat from the circular heat dissipation cavity 11 through the heat absorption pipe 17, thereby absorbing air and heat from the annular heat dissipation cavity 9, and dissipating them through the heat exhaust cylinder 18. This process extracts heat from the circular heat dissipation cavity 11 and the annular heat dissipation cavity 9, enabling the simultaneous removal of heat generated by multiple array antennas, thus improving the heat dissipation effect of the array antenna. Furthermore, multiple annular heat dissipation grooves 10 are provided on the upper side wall of the annular heat dissipation cavity 9, and multiple heat dissipation fins 14 are fixed on the top wall of the circular heat dissipation cavity 11, increasing the heat dissipation area and improving the heat dissipation effect. Multiple outwardly expanding suction holes 20 are provided at equal intervals on the upper edge of the metal tray 1, and the outwardly expanding suction holes 20 are interconnected with the outermost annular heat dissipation cavity 9. The annular suction of the outwardly expanding suction holes 20 can enable the entire array antenna to have a negative pressure shroud with dustproof function.

[0044] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A BeiDou full-band array antenna, characterized in that, include: A metal tray (1) is provided with a circular central antenna (2) installed on the upper middle part of the metal tray (1). A first choke ring plate (3) and a second choke ring plate (4) are sleeved on the outer side of the circular central antenna (2). Multiple B3 band unit antennas (5) and multiple S band unit antennas (6) are installed at equal intervals on the upper side of the metal tray (1). An isolation suppression frame (7) is provided between the B3 band unit antenna (5) and the adjacent S band unit antenna (6). The metal tray (1) has multiple interconnected annular heat dissipation cavities (9), and the upper sidewall of the annular heat dissipation cavity (9) has multiple annular heat dissipation grooves (10). The metal tray (1) has a circular heat dissipation cavity (11) in the middle, and the circular heat dissipation cavity (11) is interconnected with the annular heat dissipation grooves (10). The bottom cover (21) is installed at the bottom of the metal tray (1). A heat-absorbing component is installed inside the bottom cover (21), and the adsorption end of the heat-absorbing component is connected to the circular heat dissipation cavity (11).

2. The BeiDou full-band array antenna according to claim 1, characterized in that: The diameters of the multiple annular heat dissipation cavities (9) are all different. The central axis of the multiple annular heat dissipation cavities (9) coincides with the central axis of the circular heat dissipation cavity (11). Multiple first connecting channels (12) connect two adjacent annular heat dissipation cavities (9). Multiple second connecting channels (13) connect the circular heat dissipation cavity (11) and its adjacent annular heat dissipation cavity (9).

3. A BeiDou full-band array antenna according to claim 1, characterized in that: The top wall of the circular heat dissipation cavity (11) is fixed with multiple heat dissipation fins (14).

4. A BeiDou full-band array antenna according to claim 1, characterized in that: A heat absorption port (15) is provided in the lower middle part of the circular heat dissipation cavity (11). The heat absorption assembly includes a vacuum pump (16). The vacuum pump (16) is connected to a heat absorption pipe (17). The heat absorption pipe (17) is connected to the heat absorption port (15). The output end of the vacuum pump (16) is connected to a heat exhaust cylinder (18). The end of the heat exhaust cylinder (18) away from the vacuum pump (16) extends out of the bottom cover (21) through the side wall of the bottom cover (21).

5. A BeiDou full-band array antenna according to claim 4, characterized in that: A filter screen (19) is installed in the end port of the heat dissipation cylinder (18) that extends out of the bottom cover (21).

6. A BeiDou full-band array antenna according to claim 1, characterized in that: The upper edge of the metal tray (1) is provided with a plurality of outward expansion suction holes (20) at equal intervals, and the outward expansion suction holes (20) are connected to the outermost annular heat dissipation cavity (9).

7. A BeiDou full-band array antenna according to claim 1, characterized in that: The second choke ring plate (4) is sleeved on the outside of the first choke ring plate (3); An isolation groove (8) is provided on the upper side of the isolation and suppression frame (7), and the isolation and suppression frame (7) is connected to the second choke ring plate (4).

8. A BeiDou full-band array antenna according to claim 1, characterized in that: The number of B3 band unit antennas (5) is the same as the number of S band unit antennas (6), and the B3 band unit antennas (5) and S band unit antennas (6) are arranged at intervals.

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