High-gain dual-polarization directional planar antenna at holder end of unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle holder end high-gain dual-polarization directional planar antenna, which comprises a mounting clamp, a reflecting plate, an ultra-wideband radiation unit, an anti-interference module, a filtering characteristic centimeter network shaping plate and a radio frequency connector, and is characterized in that the reflecting plate is mounted on the mounting clamp; the ultra-wideband radiation unit, the anti-interference module and the filtering characteristic centimeter network shaping plate are all mounted on a first surface of the reflecting plate, the radio frequency connector is mounted on a second surface of the reflecting plate, the ultra-wideband radiation unit comprises a plurality of ultra-wideband radiation subunits, the ultra-wideband radiation subunits are arranged in an area array, and the radio frequency connector is mounted on the second surface of the reflecting plate. The ultra-wideband radiation unit is electrically connected with the anti-interference module and the filtering characteristic centimeter network shaping plate respectively, and the filtering characteristic centimeter network shaping plate is in coupling connection with the radio frequency connector; wherein the radio frequency band of each ultra-wideband radiation subunit is 1300-1500 MHz, and the radio frequency connector is set as an external port. The antenna is high in transmission efficiency and strong in anti-interference performance.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and in particular to a high-gain dual-polarization directional flat-plate antenna for a gimbal end of an unmanned aerial vehicle (UAV). Background Art

[0002] In the existing technology, antennas are widely used in the field of signal reception and transmission at the gimbal end of drones. At present, the existing flat-panel antennas at the gimbal end of drones often have low gain and poor filtering characteristics, which lead to large fluctuations in electromagnetic wave signals during actual antenna use. Adjacent frequency signals and resonant signals cannot be effectively filtered, resulting in mutual interference between multi-frequency devices and malfunction of normal operation.

[0003] In the existing related technologies, there is no effective solution to the problem of large fluctuations in electromagnetic wave signals, and large interference from adjacent frequency signals and resonant signals in the shaping network of the flat antenna at the gimbal end of the drone. Utility Model Content

[0004] In view of this, it is necessary to provide a high-gain dual-polarization directional flat-panel antenna for the drone gimbal end, so as to at least solve the problems of large fluctuations in the electromagnetic wave signals of the shaping network of the flat-panel antenna at the drone gimbal end in related technologies, and large interference from adjacent frequency signals and resonant signals.

[0005] A technical solution adopted by the present invention is as follows: The present invention provides a high-gain dual-polarization directional flat-panel antenna for the gimbal end of an unmanned aerial vehicle, comprising a mounting clamp, a reflector, an ultra-wideband radiation unit, an anti-interference module, a filtering characteristic centimeter network shaping plate and a radio frequency connector, wherein the reflector is mounted on the mounting clamp, the ultra-wideband radiation unit, the anti-interference module and the filtering characteristic centimeter network shaping plate are all mounted on the first surface of the reflector, the radio frequency connector is mounted on the second surface of the reflector, the ultra-wideband radiation unit comprises a plurality of ultra-wideband radiation sub-units, and the plurality of ultra-wideband radiation sub-units are arranged in a planar array, the ultra-wideband radiation unit is electrically connected to the anti-interference module and the filtering characteristic centimeter network shaping plate, respectively, and the filtering characteristic centimeter network shaping plate is coupled to the radio frequency connector; wherein the radio frequency band of each ultra-wideband radiation sub-unit is: 1300-1500MHz, and the radio frequency connector is set as an external port.

[0006] In some embodiments, the ultra-wideband radiation sub-units form an N×N planar array, where N≥3, and the ultra-wideband radiation sub-units are arranged at equal intervals in the longitudinal and transverse directions.

[0007] In some embodiments, the ultra-wideband radiation subunit includes a ground plate, a balun and a high-frequency board. The ground plate is mounted on the reflector, the balun is arranged between the ground plate and the high-frequency board, and the high-frequency board is fixedly connected to the ground plate through the balun.

[0008] In some embodiments, a support rod is further included, one side of the mounting clamp is adjustably mounted on the support rod, and the other side of the mounting clamp is mounted on the reflective plate and is located on the same surface as the reflective plate.

[0009] In some embodiments, the mounting clamp includes an L-shaped plate and a U-shaped screw rod, a first fixing hole and an elongated circular arc hole are provided on one side of the L-shaped plate, one end of the U-shaped screw rod is fixed at the first fixing hole by a nut, and the other end of the U-shaped screw rod is adjustably provided at the elongated circular arc hole by a nut; wherein, the height and angle of the L-shaped plate on the support rod are adjusted by the U-shaped screw rod.

[0010] In some embodiments, a second fixing hole is provided on the other side of the L-shaped plate, and the L-shaped plate is connected and fixed to the reflective plate through the second fixing hole and bolts.

[0011] In some embodiments, the support rod is a cylindrical structure.

[0012] In some embodiments, an outer cover is further included, which covers the reflector, and a protection area is formed between the outer cover and the reflector. The ultra-wideband radiation unit, the anti-interference module and the filtering characteristic centimeter network shaping board are located in the protection area.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the embodiment of the present application provides a high-gain dual-polarized directional flat-panel antenna for the gimbal end of an unmanned aerial vehicle, with high directivity of the array gain, no parasitic multi-order mixed signals and multi-order resonant signals, the ultra-wideband radiation unit adopts a high-frequency board material, and adopts a balun feeding design to actually support a wider frequency band bandwidth, the antenna efficiency is higher, the feeding network is loop-designed, the antenna can support higher power operation, and the maximum power tolerance is 200W (RF characteristic power). At the same time, an anti-interference module is added, and a tenth-order or multi-order resonant cavity design is adopted internally. The actual use frequency band is bandpass, the minimum cutoff outside the use frequency band is 100KHz, and the maximum cutoff is 6GHz. The out-of-band suppression is ≥35dB, which can effectively suppress the multi-order interference electromagnetic wave signals generated inside the device and affect the normal operation of the device or interfere with other devices. It has higher performance and higher commercial value and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of an embodiment of the present application without the outer cover;

[0015] Figure 2 This is a schematic structural diagram of a reflective plate and mounting clip according to an embodiment of the present application;

[0016] Figure 3 is a schematic structural diagram of an ultra-wideband radiation subunit according to an embodiment of the present application;

[0017] Figure 4 Schematic diagram of the overall structure of an embodiment of the present application.

[0018] Reference numerals:

[0019] 100, mounting clip; 11, L-shaped plate; 111, first fixing hole; 112, long arc hole; 113, second fixing hole; 12, U-shaped screw;

[0020] 200, reflector;

[0021] 300. Ultra-wideband radiation unit; 31. Ultra-wideband radiation subunit;

[0022] 400, anti-interference module;

[0023] 500, filtering characteristics centimeter network shaping board;

[0024] 600, RF connector;

[0025] 700, support rod;

[0026] 800. Outer cover. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that when a component is referred to as being "mounted on" another component, it may be mounted directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component. When a component is considered to be "fixed to" another component, it may be directly fixed to the other component or there may be a central component.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] See Figures 1 to 4 The embodiment of the present application provides a high-gain dual-polarization directional flat panel antenna for a drone gimbal, comprising a mounting clamp 100, a reflector 200, an ultra-wideband radiation unit 300, an anti-interference module 400, a filter characteristic centimeter network shaping plate 500, and a radio frequency connector 600. The reflector 200 is mounted on the mounting clamp 100, the ultra-wideband radiation unit 300, the anti-interference module 400, and the filter characteristic centimeter network shaping plate 500 are all mounted on the first surface of the reflector 200, and the radio frequency connector 600 is mounted on the reflector 2 On the second side of 00, the ultra-wideband radiation unit 300 includes a plurality of ultra-wideband radiation sub-units 31, and the plurality of ultra-wideband radiation sub-units 31 are arranged in a planar array. The ultra-wideband radiation unit 300 is electrically connected to the anti-interference module 400 and the filtering characteristic centimeter network shaping board 500 respectively, and the filtering characteristic centimeter network shaping board 500 and the RF connector 600 are coupled and connected; wherein, the RF frequency band of each ultra-wideband radiation sub-unit 31 is: 1300-1500MHz, and the RF connector 600 is set as an external port.

[0031] In the above-mentioned high-gain dual-polarization directional flat-panel antenna at the gimbal end of the drone, the ultra-wideband radiation unit 300 is arranged in a planar array, thereby improving the directional gain of the antenna in the form of a planar array, avoiding the generation of parasitic multi-order mixed signals and multi-order resonant signals by the antenna of the embodiment of the present application; by adding an internally designed multi-order resonant cavity and a frequency band-set bandpass filtering anti-interference module 400, the multi-order interference electromagnetic wave signals generated inside the transmitting device can be effectively suppressed, avoiding affecting the normal operation of the corresponding device or causing interference to other devices.

[0032] In order to improve the transmission effect of the antenna, in some optional implementations, the ultra-wideband radiation sub-units 31 form an N×N planar array, N≥3, wherein the ultra-wideband radiation sub-units 31 are arranged at equal intervals in the longitudinal and transverse directions.

[0033] Preferably, the ultra-wideband radiation sub-units 31 form a 3×3 planar array.

[0034] In order to further improve the transmission effect of the antenna, in some optional embodiments, the ultra-wideband radiation sub-unit 31 includes a ground plate 311, a balun 312 and a high-frequency board 313, the ground plate 311 is installed on the reflecting plate 200, the balun 312 is arranged between the ground plate 311 and the high-frequency board 313, and the high-frequency board 313 is fixedly connected to the ground plate 311 through the balun 312.

[0035] In this embodiment, the ultra-wideband radiation unit 300 is arranged in a planar array, thereby improving the directional gain of the antenna in the form of a planar array, avoiding the generation of parasitic multi-order mixed signals and multi-order resonant signals by the antenna of the embodiment of the present application; the ultra-wideband radiation unit 300 adopts a high-frequency board 313 plate material, and adopts a balun 312 feeding design to actually support a wider frequency band bandwidth, the antenna efficiency is higher, and the feeding network is loop-designed. The antenna can support higher power operation, and the maximum withstand power corresponding to the RF characteristic power is 200W; by adding an internally designed multi-order resonant cavity and a frequency band setting bandpass filtering anti-interference module 400, the minimum cutoff frequency outside the frequency band of the antenna of the embodiment of the present application reaches 100KHz, and the maximum cutoff frequency reaches 6GHz. The out-of-band suppression of the antenna is ≥35dB, which can effectively suppress the multi-order interference electromagnetic wave signals generated inside the transmitting device, avoiding affecting the normal operation of the corresponding device or causing interference to other devices.

[0036] In order to better fix the reflector 200 and the radiation unit 300 on the external equipment, some optional embodiments further include a support rod 700. One side of the mounting clamp 100 can be adjustably mounted on the support rod 700, and the other side of the mounting clamp 100 is mounted on the reflector 200 and is located on the same surface as the reflector 200. The support rod 700 can be fixed according to the on-site environment.

[0037] In order to achieve the horizontal angle adjustment and vertical height adjustment functions of the radiation unit 300, in some optional embodiments, the mounting clamp 100 includes an L-shaped plate 11 and a U-shaped screw rod 12, and one side of the L-shaped plate 11 is provided with a first fixing hole 111 and a long arc hole 112, one end of the U-shaped screw rod 12 is fixed at the first fixing hole 111 through a nut, and the other end of the U-shaped screw rod 12 is adjustably provided at the long arc hole 112 through a nut; wherein, the height and angle of the L-shaped plate 11 on the support rod 700 are adjusted by the U-shaped screw rod 12.

[0038] In some optional embodiments, a second fixing hole 113 is provided on the other side of the L-shaped plate 11 , and the L-shaped plate 11 is connected and fixed to the reflective plate 200 via bolts through the second fixing hole 113 .

[0039] In some optional embodiments, the support rod 700 is a cylindrical structure.

[0040] In order to better protect the safety of circuits or components, some optional embodiments further include an outer cover 800, which covers the reflector 200. A protection area is formed between the outer cover 800 and the reflector 200. The ultra-wideband radiation unit 300, the anti-interference module 400 and the filtering characteristic centimeter network shaping board 500 are located in the protection area.

[0041] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.

Claims

1. A high-gain dual-polarization directional flat panel antenna for a drone gimbal, characterized in that: The invention comprises an installation clamp (100), a reflector (200), an ultra-wideband radiation unit (300), an anti-interference module (400), a filtering characteristic centimeter network shaping plate (500) and a radio frequency connector (600), wherein the reflector (200) is installed on the installation clamp (100), the ultra-wideband radiation unit (300), the anti-interference module (400) and the filtering characteristic centimeter network shaping plate (500) are all installed on the first surface of the reflector (200), the radio frequency connector (600) is installed on the second surface of the reflector (200), and the ultra-wideband radiation unit (300), the anti-interference module (400) and the filtering characteristic centimeter network shaping plate (500) are installed on the first surface of the reflector (200). The radiation unit (300) includes a plurality of ultra-wideband radiation subunits (31), and the plurality of ultra-wideband radiation subunits (31) are arranged in a planar array. The ultra-wideband radiation unit (300) is electrically connected to the anti-interference module (400) and the filtering characteristic centimeter network shaping board (500), respectively. The filtering characteristic centimeter network shaping board (500) and the radio frequency connector (600) are coupled and connected. The radio frequency band of each ultra-wideband radiation subunit (31) is 1300-1500 MHz, and the radio frequency connector (600) is configured as an external port.

2. The high-gain dual-polarization directional flat panel antenna for the UAV gimbal according to claim 1, characterized in that: The ultra-wideband radiation subunits (31) form an N×N planar array, where N≥3, and the ultra-wideband radiation subunits (31) are arranged at equal intervals in the longitudinal and transverse directions.

3. The high-gain dual-polarization directional flat panel antenna for the UAV gimbal according to claim 2, characterized in that: The ultra-wideband radiation subunit (31) includes a ground plate (311), a balun (312) and a high-frequency board (313), wherein the ground plate (311) is mounted on the reflection plate (200), the balun (312) is arranged between the ground plate (311) and the high-frequency board (313), and the high-frequency board (313) is fixedly connected to the ground plate (311) through the balun (312).

4. The high-gain dual-polarization directional flat panel antenna for the UAV gimbal according to claim 1, characterized in that: It also includes a support rod (700), one side of the installation clamp (100) is adjustably mounted on the support rod (700), and the other side of the installation clamp (100) is mounted on the reflective plate (200) and is located on the same surface as the reflective plate (200).

5. The high-gain dual-polarization directional flat panel antenna for the UAV gimbal according to claim 4, characterized in that: The mounting clamp (100) comprises an L-shaped plate (11) and a U-shaped screw rod (12), wherein a first fixing hole (111) and an elongated circular arc hole (112) are provided on one side of the L-shaped plate (11), one end of the U-shaped screw rod (12) is fixed to the first fixing hole (111) via a nut, and the other end of the U-shaped screw rod (12) is adjustable at the elongated circular arc hole (112) via a nut; wherein the height and angle of the L-shaped plate (11) on the support rod (700) are adjusted via the U-shaped screw rod (12).

6. The high-gain dual-polarization directional flat panel antenna for the UAV gimbal according to claim 5, characterized in that: A second fixing hole (113) is provided on the other side of the L-shaped plate (11), and the L-shaped plate (11) is connected and fixed to the reflecting plate (200) via the second fixing hole (113) and bolts.

7. The high-gain dual-polarization directional flat panel antenna for the UAV gimbal according to claim 5, characterized in that: The support rod (700) has a cylindrical structure.

8. The high-gain dual-polarization directional flat panel antenna for the UAV gimbal according to claim 1, characterized in that: It also includes an outer cover (800), the outer cover (800) covers the reflector (200), a protection area is formed between the outer cover (800) and the reflector (200), and the ultra-wideband radiation unit (300), the anti-interference module (400) and the filtering characteristic centimeter network shaping plate (500) are located in the protection area.

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