A portable high-stability scattering communication antenna

Abstract

The present invention discloses a portable high-stability scattering communication antenna, which belongs to the technical field of communication antennas. It includes a reflecting surface, a feed assembly and a support frame; the support frame includes a pitch leg, a feed strut and two fixed legs, and the extension lines of the two fixed legs intersect at one point; one end of the top of the pitch leg is hinged to the back center of the reflecting surface, and the pitch leg and the plane where the two fixed legs are located have an angle; the feed struts are respectively located on the corresponding fixed legs, and the two feed struts intersect at the support point, and the support point is located directly in front of the reflecting surface; the feed assembly is fixed to the support point position by two feed support rods. The present invention is easy to assemble and disassemble, and the azimuth and pitch adjustment operations are simple, and the structure is light and stable.

Description

Technical Field

[0001] The invention relates to the technical field of communication antennas, and in particular to a portable high-stability scattering communication antenna. Background Art

[0002] Compared with satellite communication, shortwave communication, ultra-shortwave communication and other communication methods, tropospheric scattering communication has the advantages of good confidentiality and strong anti-interference. These advantages largely rely on narrow-beam, highly directional scattering communication antennas. Since tropospheric scattering communication requires the use of narrow-beam, highly directional scattering communication antennas, higher requirements are placed on the stability of the antenna. How to ensure the stability of scattering communication antennas, especially portable scattering communication antennas, is particularly important.

[0003] Existing portable scattering communication antennas have poor structural stability. The antenna surface and feed source are easily shaken by environmental factors, causing jitter in the received signal level, which in turn affects the communication quality and reliability, making it difficult to meet rapidly increasing performance requirements. Summary of the invention

[0004] In view of this, the present invention provides a portable high-stability scattering communication antenna. The communication antenna is easy to assemble and disassemble, and the azimuth and pitch adjustment operations are simple and convenient, and the structure is light and the stability is high.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A portable high-stability scattering communication antenna comprises a reflecting surface, a feed assembly and a supporting frame; the supporting frame comprises a pitch leg, a feed support rod and two fixed legs, and the extension lines of the two fixed legs intersect at a point; one end of the top of the pitch leg is hinged to the back center of the reflecting surface, and the pitch leg and the plane where the two fixed legs are located have an angle; the feed support rod is respectively located on the corresponding fixed legs, and the two feed support rods intersect at a supporting point, and the supporting point is located directly in front of the reflecting surface; the feed assembly is fixed to the supporting point position by two feed support rods.

[0007] Furthermore, the reflecting surface is a carbon fiber grid reflecting surface; the carbon fiber grid reflecting surface is a petal structure, including multiple grid reflecting surface petals and a central body; the back of one of the grid reflecting surface petals is provided with a leg mounting seat for connecting a fixed leg; the back of the central body is provided with a pitch ear for connecting a pitch leg, and the ear is hinged to the pitch leg; the back of the grid reflecting surface petal is provided with a back rib for stabilizing the structure.

[0008] Furthermore, the feed assembly includes a feed arm, a feed horn and a threaded locking device; wherein the feed horn and the threaded locking device are respectively installed on both ends of the feed arm, and wherein the threaded locking device is connected to the central body of the reflecting surface.

[0009] Furthermore, the feed horn is installed on the feed arm through an adapter to achieve axial fine-tuning and longitudinal fine-tuning of the feed horn; the phase center of the feed horn coincides with the phase center of the antenna surface.

[0010] Furthermore, it also includes a triangular plate, each corner of which is provided with a lifting ring with an internal thread; the pitch legs and the fixed legs are connected to the ears of the triangular plate by bolts.

[0011] Furthermore, the bottoms of the pitch legs and the fixed legs are both hinged with anchor plates.

[0012] Furthermore, the pitch support leg includes an upper rod and a lower rod, and the ends of the upper rod and the lower rod are connected by a nut connecting device; the top of the upper rod is provided with a pitch lifting ring threadedly connected to it, and the pitch lifting ring can move along the upper rod by rotation; the pitch lifting ring and the pitch support ear on the back of the center body are hinged by a quick pin.

[0013] Furthermore, it also includes two reflecting surface struts for enhancing the stability of the antenna, and the pitch leg is provided with a compass mounting bracket for installing the compass, and the compass mounting bracket is screwed with two second butterfly bolts; first butterfly bolts are screwed on both sides of the bottom of the reflecting surface; both ends of the reflecting surface strut are provided with sliding grooves, the threaded portion of the first butterfly bolt is constrained in the sliding groove at one end of the reflecting surface strut, and the threaded portion of the second butterfly bolt is constrained in the sliding groove at the other end of the reflecting surface strut; the threaded portion of the butterfly bolt has a movable margin in the sliding groove.

[0014] The beneficial effects of the above technical solution of the present invention are:

[0015] 1. The portable high-stability scattering communication antenna described in the present invention is different from the combination of a tripod and a two-dimensional turntable in the traditional portable antenna design. Instead, the multi-level effective support of the carbon fiber grid reflective surface and the feed assembly by fixed legs, pitch legs, triangle plates, feed support rods and reflective surface support rods enhances the overall structural stability of the antenna, and has the ability to be set up and used in harsh environmental conditions with wind speeds above 18m / s.

[0016] 2. The portable high-stability scattering communication antenna described in the present invention can adjust the antenna pitch by the aforementioned pitch adjustment device and adjust the antenna azimuth by moving and rotating the antenna. It is simple, reliable and highly operable.

[0017] 3. The portable high-stability scattering communication antenna described in the present invention is easy to assemble and disassemble. After simple training and without additional tools, one person can complete the assembly or disassembly of the antenna within 10 minutes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the antenna in the present invention;

[0019] Figure 2 It is a structural schematic diagram of the carbon fiber grid reflective surface in the present invention;

[0020] Figure 3 is a schematic diagram of the structure of the centrosome in the present invention;

[0021] Figure 4 is a schematic structural diagram of the feed assembly in the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the fixed legs in the present invention;

[0023] Figure 6 It is a schematic structural diagram of the pitching legs in the present invention;

[0024] Figure 7 It is a structural schematic diagram of the triangular plate in the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the feed support rod in the present invention;

[0026] Fig. 9 It is a structural schematic diagram of the reflective surface support rod in the present invention. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] A portable high-stability scattering communication antenna mainly includes a carbon fiber grid reflector, a feed assembly, a feed support rod, a fixed leg, a pitch leg, a triangle plate, and a reflector support rod. The carbon fiber grid reflector is composed of a central body and multiple independent grid reflectors spliced ​​in petals; the feed assembly is composed of a feed support arm and a feed horn.

[0030] Specifically, the carbon fiber grid reflective surface has a local reinforcement design to ensure that the overall structure of the reflective surface does not deform when the carbon fiber grid reflective surface is connected to other components. In particular, a Beidou antenna mounting bracket is also arranged on the carbon fiber grid reflective surface.

[0031] Specifically, the feed assembly is installed on the central body of the carbon fiber grid reflective surface through a threaded locking device, and the installation / disassembly operation is simple. The feed horn is installed on the feed support arm through an adapter. Through axial and longitudinal fine-tuning, the phase center of the feed can be ensured to coincide with the phase center of the antenna surface, thereby ensuring the electrical performance of the antenna.

[0032] Specifically, the fixed leg is fixed to the carbon fiber grid reflective surface through a leg mounting seat and is locked by an eye bolt. The pitch leg is connected to the central body of the carbon fiber grid reflective surface through a quick pin. The pitch leg has the function of adjusting the antenna pitch. The method of use is to loosen the locking knob, change the length of the pitch leg by rotating the adjustment sleeve to adjust the pitch, and fix the locking knob after the adjustment. In particular, the damping of the adjustment sleeve can be increased by the locking knob to prevent damage to the equipment caused by sudden changes in the adjustment stroke. The pitch leg is also equipped with a protective cover with wind and sand protection functions. In particular, the pitch leg can be split into two sections to shorten the size for easy storage and transportation.

[0033] Specifically, the triangle plate is a triangular carbon fiber plate that is hollowed out to reduce weight. The triangle plate is installed between the fixed leg and the pitch leg and is assembled through a single ear locking device and a lifting eye bolt. Communication equipment can also be placed on the triangle plate to increase the antenna weight, thereby further improving the antenna stability.

[0034] Specifically, the feed strut is a diagonal rod between the fixed leg and the feed assembly, and the reflector surface strut is a diagonal rod between the pitch leg and the carbon fiber grid reflector. The feed strut and the reflector surface strut serve as auxiliary supports for the carbon fiber grid reflector and the feed assembly, which can enhance the stability of the antenna and significantly reduce the signal level jitter caused by the shaking of the antenna. In particular, when the antenna is pitched, the locking point between the reflector surface strut and the pitch leg should be loosened appropriately and re-tightened after the adjustment is completed.

[0035] The following is a more specific embodiment:

[0036] like Figure 1 As shown, this embodiment mainly includes a carbon fiber grid reflective surface 1, a feed assembly 2, a feed support rod 3, a fixed support leg 4, a pitch support leg 5, a triangle plate 6, and a reflective surface support rod 7.

[0037] like Figure 2 As shown, the carbon fiber grid reflective surface 1 is composed of a central body 8 and grid reflective surface petals 9 to 14 which are spliced ​​in sequence.

[0038] The grid reflective surface petals 9 increase the structural strength by adding back ribs 15 to prevent the reflective surface petals 9 from being deformed due to excessive force. In addition, the reflective surface petals 9 are also provided with leg mounting seats 16 through embedded metal parts.

[0039] The grid reflective surface segment 10 and the grid reflective surface segment 14 are provided with butterfly nut clamps 17 , and the grid reflective surface segment 11 and the grid reflective surface segment 13 are provided with Beidou antenna mounting brackets 18 .

[0040] like Figure 3 As shown, the front side of the central body 8 fixes the feed assembly 2, and the back side is connected to the elevation legs 5 via a double ear structure 19, and the surrounding areas are sequentially connected to the grid reflector surface petals 9 to 14. In particular, the central body 8 is also provided with a spirit level 20 and an elevation pointer 21 for indicating the azimuth and elevation status of the antenna, and is also provided with a pull ring 22 for connecting a pull rope when the antenna is used as a fixed antenna.

[0041] like Figure 4 As shown, the feed assembly 2 is installed on the carbon fiber grid reflective surface 1 through a nut locking device 25, and the feed horn 23 is installed on the feed support arm 24 through a waveguide clip, which can achieve axial and longitudinal fine-tuning to ensure that the phase center of the feed coincides with the phase center of the antenna surface, thereby ensuring the electrical performance of the antenna.

[0042] Specifically, the feed horn 23 is a circular-aperture corrugated horn, and the electrical interface of the feed horn 23 is a BJ58 standard waveguide, which is convenient for docking with a standard interface duplex component.

[0043] like Figure 5 As shown, the fixed leg 4 has a structure in the form of a carbon fiber tube, one end of which is installed with a metal joint 26 and fixed to the carbon fiber grid reflective surface 1 through the metal joint 26; one end is connected to the anchor plate 27 through a hinge joint, and a structural member 28 is also installed on the fixed leg 4. Two fixed legs 4 are connected to the carbon fiber grid reflective surface 1, respectively serving as the left and right legs of the antenna.

[0044] The structural member 28 is a combined structural member of a single ear fixing structure and a ball head fixing structure, and the fixed leg 4 is connected to the feed support rod 3 and the triangular plate 6 through the structural member 28 .

[0045] like Figure 6 As shown, one end of the pitch leg 5 is connected to the center body 8 through a quick latch, and the other end is connected to the anchor plate 27 through a hinge joint. The pitch leg 5 is also installed with a structural member 28 and a compass mounting bracket 29. The pitch leg 5 can be divided into two sections by a nut locking device 30 to shorten the size for easy storage and transportation.

[0046] The compass mounting bracket 29 is also equipped with a butterfly bolt fixture 21 .

[0047] It should be noted that the pitch leg 5 has the function of adjusting the antenna pitch, and its usage is: after loosening the locking knob 31, the pitch is adjusted by rotating the adjusting sleeve 32. After the adjustment is completed, the locking knob 31 is fixed. The locking knob 31 can increase the damping of the adjusting sleeve 32 to prevent damage to the equipment caused by sudden changes in the adjustment stroke. The pitch leg is also equipped with a protective cover 33, which has the function of preventing wind and sand.

[0048] Figure 7 The figure shows a schematic diagram of the structure of the triangle plate 6. As mentioned above, the triangle plate 6 is installed between the fixed leg 4 and the elevation leg 5 through the single ear locking device 34 and the eye bolt to ensure the stability of the antenna structure.

[0049] like Figure 8 As shown, both ends of the feed strut 3 are ball head fixing structures 35, one end is connected to the feed assembly 2, and the other end is connected to the fixed leg 4. The two feed struts 3 are installed on the left and right sides of the feed assembly 2, symmetrical to each other, to ensure that the relative position of the feed is fixed.

[0050] like Fig. 9 As shown, the reflective surface support rod 7 has U-shaped clamp structures 36 at both ends, one end is connected to the carbon fiber grid reflective surface 1, and the other end is connected to the pitch leg 5. The two reflective surface support rods 7 are installed on the left and right sides of the carbon fiber grid reflective surface 1, symmetrical to each other, which can significantly reduce the signal level jitter caused by the shaking of the antenna.

[0051] The portable high-stability scattering communication antenna described in the present invention enhances the overall structural stability of the antenna through multi-level effective support of the carbon fiber grid reflective surface and the feed assembly by the feed support rod, the fixed support leg, the pitch support leg, the triangle plate and the reflective surface support rod; the antenna pitch is adjusted by the aforementioned pitch adjustment device, and the antenna azimuth is adjusted by moving and rotating the antenna. It is simple, reliable, and highly operable, and can further expand the application scope of scattering communication.

[0052] The above is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived from them are still within the scope of protection of the present invention.

Claims

1. A portable high-stability scattering communication antenna, comprising a reflecting surface, a feed assembly and a supporting frame; characterized in that: The support frame includes a pitch leg, a feed support rod and two fixed legs, and the extension lines of the two fixed legs intersect at one point; one end of the top of the pitch leg is hinged to the back center of the reflective surface, and the pitch leg and the plane where the two fixed legs are located have an angle; the feed support rods are respectively located on the corresponding fixed legs, and the two feed support rods intersect at the support point, and the support point is located directly in front of the reflective surface; the feed assembly is fixed to the support point position by two feed support rods; It also includes a triangular plate, each corner of which is provided with a lifting ring with an internal thread; the pitching legs and the fixed legs are connected to the ears of the triangular plate by bolts; The bottoms of the pitching legs and the fixed legs are both hinged with anchor plates.

2. A portable high-stability scattering communication antenna according to claim 1, characterized in that: The reflecting surface is a carbon fiber grid reflecting surface; the carbon fiber grid reflecting surface is a petal structure, including a plurality of grid reflecting surface petals and a central body; the back of one of the grid reflecting surface petals is provided with a leg mounting seat for connecting a fixed leg; the back of the central body is provided with a pitch ear for connecting a pitch leg, and the ear is hinged to the pitch leg; the back of the grid reflecting surface petals is provided with a back rib for stabilizing the structure.

3. A portable high-stability scattering communication antenna according to claim 1, characterized in that: The feed assembly comprises a feed support arm, a feed horn and a thread locking device; wherein the feed horn and the thread locking device are respectively installed at two ends of the feed support arm, wherein the thread locking device is connected to the central body of the reflecting surface.

4. A portable high-stability scattering communication antenna according to claim 3, characterized in that: The feed horn is installed on the feed support arm through an adapter to achieve axial fine-tuning and longitudinal fine-tuning of the feed horn; the phase center of the feed horn coincides with the phase center of the antenna surface.

5. The portable high-stability scattering communication antenna according to claim 1, characterized in that: The pitch support leg comprises an upper rod and a lower rod, the ends of which are connected by a nut connecting device; a pitch lifting ring threadedly connected to the top of the upper rod is provided, and the pitch lifting ring can be moved along the upper rod by rotation; the pitch lifting ring is hinged to the pitch support ear on the back of the center body by a quick pin.

6. The portable high-stability scattering communication antenna according to claim 1, characterized in that: It also includes two reflecting surface struts for enhancing the stability of the antenna, and the pitch legs are provided with a compass mounting bracket for mounting a compass, and the compass mounting bracket is screwed with two second butterfly bolts; first butterfly bolts are screwed on both sides of the bottom of the reflecting surface; both ends of the reflecting surface struts are provided with sliding grooves, the threaded portion of the first butterfly bolt is constrained in the sliding groove at one end of the reflecting surface strut, and the threaded portion of the second butterfly bolt is constrained in the sliding groove at the other end of the reflecting surface strut; the threaded portion of the butterfly bolt has a movable margin in the sliding groove.

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