High-directivity anti-interference parabolic antenna

Abstract

The utility model belongs to the technical field of antennas, and particularly discloses a highly-directional anti-interference parabolic antenna, which comprises a parabolic reflector and an antenna body, the antenna body is arranged at the focus of the parabolic reflector and comprises a support rod, a shell, a first horn oscillator and a second horn oscillator, one end of the supporting rod is arranged at the focus of the parabolic reflector, the other end of the supporting rod is provided with the shell, the first horn vibrator and the second horn vibrator are arranged in the shell, and the first impedance balance piece and the second impedance balance piece are arranged on the two sides in the first horn vibrator and the two sides in the second horn vibrator respectively. A feed source oscillator in the antenna body is replaced by the horn oscillators, the frequency band width of the antenna can be guaranteed through cooperation of the first horn oscillator and the second horn oscillator, meanwhile, the first impedance balance piece and the second impedance balance piece are arranged on the two sets of horn oscillators, the loss of frequency bandwidth can be reduced, it is guaranteed that the frequency bandwidth is maintained to be 600-6400 Mh, and the antenna has the advantages of being simple in structure and convenient to use. And the practicability of the parabolic antenna is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a high-directional anti-interference parabolic antenna. Background Art

[0002] Parabolic antenna, a planar antenna composed of a parabolic reflector and a feed source at its focus, is called a parabolic antenna. It is the most widely used type of microwave antenna. In recent years, with the rapid development of communication system integration, the transmission distance of the parabolic antenna needs to be farther and farther and the frequency span needs to be set larger and larger. The commonly used parabolic large-band antennas on the market are generally 698-2700Mhz. The parabolic antenna generally uses a symmetrical vibrator as a parabolic feed vibrator. Since the symmetrical vibrator lacks a reflector, the antenna gain is low, which will cause the parabolic antenna to have a short data transmission distance. At the same time, parabolic antennas on the market will also use logarithmic periodic antennas as parabolic feed vibrators. The antenna assembled in this way will have unstable gain due to the long focal length, which will affect the normal use of the parabolic antenna and reduce the practicality of the parabolic antenna. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides a high-directional anti-interference parabolic antenna.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a high-directional anti-interference parabolic antenna, including a parabolic reflector and an antenna body, wherein the antenna body is arranged at the focus of the parabolic reflector, and the antenna body includes a support rod, a shell, a first horn vibrator and a second horn vibrator, one end of the support rod is arranged at the focus of the parabolic reflector, and the other end of the support rod is provided with a shell, and the first horn vibrator and the second horn vibrator are arranged inside the shell, and a plurality of fixed connecting columns are arranged between the first horn vibrator and the second horn vibrator, and the first horn vibrator and the second horn vibrator are respectively provided with a first impedance balancing plate and a second impedance balancing plate on both sides of the inside.

[0005] Further description of this scheme, the first impedance balancing plate and the second impedance balancing plate are symmetrically distributed inside the first speaker oscillator with the central axis of the first speaker oscillator, and the first impedance balancing plate and the second impedance balancing plate are symmetrically distributed inside the second speaker oscillator with the central axis of the second speaker oscillator.

[0006] Specifically, the first impedance balancing sheet and the second impedance balancing sheet have the same structure, a plurality of grooves are arranged inside the first impedance balancing sheet, an opening angle of the grooves is ɑ, and the angle of ɑ is 106°.

[0007] Further description of this scheme, one end of the fixed connecting column is provided with the bottom surface of the first speaker vibrator, and one end of the fixed connecting column is provided with the top surface of the second speaker vibrator, and the first speaker vibrator and the second speaker vibrator are connected by the fixed connecting column so that the first speaker vibrator and the second speaker vibrator are combined into a horn-shaped feed vibrator group.

[0008] Specifically, the first speaker vibrator and the second speaker vibrator are parallel to each other.

[0009] Further description of this solution: a plug-in portion is provided on one side of the shell close to the support rod, a through hole is provided inside the support rod, and one end of the support rod close to the shell is plugged into the plug-in portion through the through hole.

[0010] Further description of this solution, the antenna body also includes a coaxial cable, which is arranged inside the shell, one end of the coaxial cable is electrically connected to the first impedance balancing plate and the second impedance balancing plate, and the other end of the coaxial cable extends to the outside through a through hole inside the support rod.

[0011] Specifically, the core at one end of the coaxial cable is electrically connected to the first impedance balancing sheet, and the mesh shielding layer at one end of the coaxial cable is electrically connected to the second impedance balancing sheet.

[0012] The beneficial effects of the utility model are as follows: the feed vibrator in the antenna body of the parabolic antenna is replaced with a horn vibrator, and the frequency bandwidth of the antenna can be guaranteed by the cooperation of the first horn vibrator and the second horn vibrator, and the antenna gain can be guaranteed to be flat, thereby ensuring the stability of the data transmission distance of the parabolic antenna and the stability of the use of the parabolic antenna; at the same time, a first impedance balancing plate and a second impedance balancing plate are arranged on the two groups of horn vibrators, and by arranging two groups of impedance balancing plates at the feed vibrator, the loss of frequency bandwidth can be reduced, ensuring that the frequency bandwidth is maintained at 600-6400Mh, which can improve the frequency bandwidth of the antenna and improve the practicality of the parabolic antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the parabolic antenna of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the antenna body of the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the antenna body of the utility model;

[0016] Figure 4 for Figure 3 A magnified view of the structure at A;

[0017] Figure 5 It is a structural schematic diagram of the housing of the utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the first impedance balancing sheet of the utility model;

[0019] Figure 7 It is a cross-sectional view of the groove of the utility model.

[0020] As shown in the figure: parabolic reflector 1, antenna body 2, support rod 21, through hole 211, shell 22, plug-in part 221, first speaker vibrator 23, second speaker vibrator 24, fixed connecting column 25, first impedance balancing sheet 3, groove 31, second impedance balancing sheet 4, coaxial cable 5. DETAILED DESCRIPTION

[0021] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] As attached Figure 1 , 2 , 3, 4, 5 and 6, the utility model provides a high-directional anti-interference parabolic antenna, including a parabolic reflector 1 and an antenna body 2, the antenna body 2 is arranged at the focus of the parabolic reflector 1, the antenna body 2 includes a support rod 21, a shell 22, a first horn vibrator 23 and a second horn vibrator 24, one end of the support rod 21 is arranged at the focus of the parabolic reflector 1, the other end of the support rod 21 is provided with a shell 22, the first horn vibrator 23 and the second horn vibrator 24 are arranged inside the shell 22, a plurality of fixed connecting columns 25 are arranged between the first horn vibrator 23 and the second horn vibrator 24, one end of the fixed connecting column 25 is provided with the bottom surface of the first horn vibrator 23, and one end of the fixed connecting column 25 is provided with the top surface of the second horn vibrator 24, the first horn vibrator 23 and the second horn vibrator 24 are connected by the fixed connecting column, so that the first horn vibrator 23 and the second horn vibrator 24 are combined into a horn-shaped feed vibrator group;

[0023] By replacing the feed vibrator in the antenna body with a horn-shaped feed vibrator group instead of using a conventional symmetrical vibrator as the feed vibrator, the first horn vibrator 23 and the second horn vibrator 24 cooperate to ensure the overall bandwidth of the antenna and the flatness of the antenna gain, thereby ensuring the stability of the data transmission distance of the parabolic antenna and the stability of the parabolic antenna during use.

[0024] Preferably, the first speaker oscillator 23 and the second speaker oscillator 24 are parallel to each other.

[0025] As attached Figure 2, 3 As shown in Figures 4, 5, 6 and 7, a first impedance balancing sheet 3 and a second impedance balancing sheet 4 are respectively arranged on both sides of the inside of the first horn oscillator 23 and the second horn oscillator 24, the first impedance balancing sheet 3 and the second impedance balancing sheet 4 are symmetrically distributed inside the first horn oscillator 23 with the central axis of the first horn oscillator 23, and the first impedance balancing sheet 3 and the second impedance balancing sheet 4 are symmetrically distributed inside the second horn oscillator 24 with the central axis of the second horn oscillator 24. By arranging two groups of impedance balancing sheets at the horn-shaped feed oscillator group of the parabolic antenna, the loss of frequency bandwidth can be reduced, ensuring that the frequency bandwidth is maintained at 600-6400Mh, which can improve the frequency width of the antenna and improve the practicality of the parabolic antenna;

[0026] Subsequently, the structures of the first impedance balancing piece 3 and the second impedance balancing piece 4 are consistent, and a plurality of grooves 31 are arranged inside the first impedance balancing piece 3. The opening angle of the groove 31 is ɑ, and the angle of ɑ is 106°. By setting the opening angle to 106°, the first impedance balancing piece 3 and the second impedance balancing piece 4 can be further made to better cooperate with the horn-shaped feed element group to ensure the signal flatness of the antenna body 2.

[0027] As attached Figure 2 , 3 As shown in Figure 5, a plug-in portion 221 is provided on one side of the outer shell 22 close to the support rod 21, a through hole 211 is provided inside the support rod 21, and one end of the support rod 21 close to the outer shell 22 is plugged into the plug-in portion 221 through the through hole 211, so that the outer shell 22 can be better assembled with the support rod 21.

[0028] As attached Figure 2 , 3 As shown in Figures , 4, 5, 6 and 7, the antenna body 2 also includes a coaxial cable 5, which is arranged inside the shell 22, and one end of the coaxial cable 5 is electrically connected to the first impedance balancing piece 3 and the second impedance balancing piece 4, and the other end of the coaxial cable 5 extends to the outside through the through hole 211 inside the support rod 21, so that it can be electrically connected to an external signal source, and then the core at one end of the coaxial cable 5 is electrically connected to the first impedance balancing piece 3, and the mesh shielding layer at one end of the coaxial cable 5 is electrically connected to the second impedance balancing piece 4.

[0029] Working principle of the antenna: external signals can be transmitted to the first impedance balancing plate 3 and the second impedance balancing plate 4 through the coaxial cable 5, so that the frequency bandwidth loss can be reduced by setting two sets of impedance balancing plates, ensuring that the frequency bandwidth is maintained at 600-6400Mh, which can improve the frequency bandwidth of the antenna. Subsequently, the opening angle of the two sets of impedance balancing plates is set to 106°, so that the signal flatness of the antenna body 2 can be ensured;

[0030] Then, the signal can be transmitted to the first speaker oscillator 23 and the second speaker oscillator 24 respectively through the first impedance balancing plate 3 and the second impedance balancing plate 4. The first speaker oscillator 23 and the second speaker oscillator 24 are combined into a horn-shaped feed oscillator group, so that the 600-6400Mhz signal is concentrated on the horn mouth of the horn-shaped feed oscillator group and radiated to the parabolic reflector 1, and then reflected to the outside through the parabolic reflector 1, thereby realizing signal transmission.

[0031] Preferably, the frequency bandwidth of the parabolic antenna can be 600-6400Mhz, which is suitable for outdoor exploration communications, various calls or video transmissions.

[0032] Preferably, the length of the support rod 21 can be subsequently changed to match parabolic reflectors 1 of different diameters, so as to achieve different gains of the parabolic antenna and adapt to the requirements of different environments.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A high-directional anti-interference parabolic antenna, comprising a parabolic reflector (1) and an antenna body (2), characterized in that: The antenna body (2) is arranged at the focus of the parabolic reflector (1), and the antenna body (2) comprises a support rod (21), a shell (22), a first horn vibrator (23) and a second horn vibrator (24); one end of the support rod (21) is arranged at the focus of the parabolic reflector (1); the other end of the support rod (21) is provided with a shell (22); the first horn vibrator (23) and the second horn vibrator (24) are arranged inside the shell (22); a plurality of fixed connection columns (25) are arranged between the first horn vibrator (23) and the second horn vibrator (24); and a first impedance balancing plate (3) and a second impedance balancing plate (4) are respectively arranged on both sides of the inside of the first horn vibrator (23) and the second horn vibrator (24).

2. The high-directional anti-interference parabolic antenna according to claim 1, characterized in that: The first impedance balancing piece (3) and the second impedance balancing piece (4) are symmetrically distributed inside the first speaker oscillator (23) with respect to the central axis of the first speaker oscillator (23); the first impedance balancing piece (3) and the second impedance balancing piece (4) are symmetrically distributed inside the second speaker oscillator (24) with respect to the central axis of the second speaker oscillator (24).

3. The high-directional anti-interference parabolic antenna according to claim 2, characterized in that: The first impedance balancing sheet (3) and the second impedance balancing sheet (4) have the same structure; a plurality of grooves (31) are provided inside the first impedance balancing sheet (3); an opening angle of the grooves (31) is ɑ, and the angle ɑ is 106°.

4. The high-directional anti-interference parabolic antenna according to claim 1, characterized in that: One end of the fixed connection column (25) is provided with the bottom surface of the first horn vibrator (23), and one end of the fixed connection column (25) is provided with the top surface of the second horn vibrator (24); the first horn vibrator (23) and the second horn vibrator (24) are connected via the fixed connection column, so that the first horn vibrator (23) and the second horn vibrator (24) are combined into a horn-shaped feed source vibrator group.

5. The high-directional anti-interference parabolic antenna according to claim 4, characterized in that: The first speaker vibrator (23) and the second speaker vibrator (24) are parallel to each other.

6. The high-directional anti-interference parabolic antenna according to claim 1, characterized in that: A plug-in portion (221) is provided on one side of the housing (22) close to the support rod (21); a through hole (211) is provided inside the support rod (21); and one end of the support rod (21) close to the housing (22) is plugged into the plug-in portion (221) through the through hole (211).

7. The high-directional anti-interference parabolic antenna according to claim 1, characterized in that: The antenna body (2) further comprises a coaxial cable (5), wherein the coaxial cable (5) is arranged inside the housing (22), one end of the coaxial cable (5) is electrically connected to the first impedance balancing sheet (3) and the second impedance balancing sheet (4), and the other end of the coaxial cable (5) extends to the outside through a through hole (211) inside the support rod (21).

8. The high-directional anti-interference parabolic antenna according to claim 7, characterized in that: The wire core at one end of the coaxial cable (5) is electrically connected to the first impedance balancing sheet (3), and the mesh shielding layer at one end of the coaxial cable (5) is electrically connected to the second impedance balancing sheet (4).

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