Unmanned aerial vehicle broadband high-gain wireless signal counter directional antenna

Abstract

The utility model discloses an unmanned plane broadband high gain wireless signal counter directional antenna, comprising a substrate, the substrate comprises a first panel and a second panel, the first panel is provided with a first reflection oscillator, the second panel is provided with a second reflection oscillator, and a director oscillator is arranged above the first reflection oscillator; a split resonant ring unit is also arranged above the director oscillator; each split-ring resonator unit comprises a base body and a connecting column; the number of the connecting columns is two, and an opening is formed between the two connecting columns. According to the utility model, a printed circuit board broadband high-gain directional antenna is provided to replace a conventional yagi antenna, and a miniaturized printed antenna design is provided, so that the antenna can be conveniently integrated into countering equipment, the size and the weight can be reduced, and the antenna is more convenient to carry. And meanwhile, the improved antenna has wider frequency band and higher gain, and counters farther distance. The design of the antenna is more suitable for portable mobile unmanned aerial vehicle countering equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of wireless communication, in particular to a broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles. Background Art

[0002] At present, the types of low-altitude aircraft are increasing day by day. Small aircraft such as drones are small in size, fast in speed, and flexible in maneuverability. Although they can bring convenience to people's production and life, they increase the difficulty of maintaining air defense security. "Illegal flying" intrusions into the no-fly zone occur from time to time, affecting the safety of the station.

[0003] Drone defense technology is an effective blow to the phenomenon of illegal flying! The Yagi directional antenna currently used for drone countermeasures has problems such as narrow antenna band, low gain, and short countermeasure distance. In the prior art, for example, the technical solution recorded in the patent with publication number: CN220797095U: a magnetic dipole Yagi antenna, by respectively arranging an electrically coupled metal sheet, a reflector and a parasitic antenna unit on the bottom and top surfaces of the substrate of the magnetic dipole Yagi antenna, so that the electrically coupled metal sheet and the parasitic antenna unit can cooperate with each other to form a wide-beam magnetic dipole Yagi antenna.

[0004] In the prior art, there is a problem that the printed quasi-Yagi antenna with a single director has a narrow bandwidth and a small gain, and cannot meet actual needs. Utility Model Content

[0005] The purpose of the utility model is to provide a wide-band high-gain wireless signal counter-directional antenna for unmanned aerial vehicles, so as to solve the problems of narrow antenna band, low gain and short counter-distance of the Yagi directional antenna currently used for counter-measurement of unmanned aerial vehicles mentioned in the background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles comprises a substrate, the substrate comprises a first panel and a second panel, wherein a first reflection vibrator is arranged on the first panel, and a first reflection vibrator is arranged on the second panel, and the first reflection vibrators are connected to each other through vias;

[0008] A guide vibrator is also arranged above the first reflective vibrator, and the guide vibrator is arranged along the width direction of the first panel; an open resonant ring unit is also arranged above the guide vibrator; the open resonant ring unit is used to improve the antenna gain;

[0009] The open resonant ring unit includes a base and a connecting column; wherein, two connecting columns are provided, the two connecting columns are respectively connected to the ends of the base, and the two connecting columns are arranged toward the middle of the base; an opening is formed between the two connecting columns.

[0010] According to the above technical solution, a second reflecting vibrator is further arranged below the first reflecting vibrator, and the second reflecting vibrator is used to reflect the signal to make the signal more concentrated.

[0011] According to the above technical solution, a microstrip line is arranged in the middle of the first reflector, and the microstrip line is used to feed the first reflector.

[0012] According to the above technical solution, matching grooves are further provided on both sides of the microstrip line, and the matching grooves are used to increase the bandwidth of the antenna.

[0013] According to the above technical solution, a plurality of guide vibrators are provided, and the plurality of guide vibrators are arranged in sequence from top to bottom.

[0014] According to the above technical solution, the base body is a U-shaped structure, and the opening of the base body is arranged along the width direction of the first panel.

[0015] According to the above technical solution, two groups of open resonant ring units are provided, and the two groups of open resonant ring units are respectively provided on both sides of the first panel, and the two groups of open resonant ring units are arranged opposite to each other.

[0016] According to the above technical solution, the first reflective vibrator is arranged on the side of the second panel.

[0017] According to the above technical solution, the vias are metal vias.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] In the utility model, a printed circuit board wide-band high-gain directional antenna is proposed to replace the conventional Yagi antenna. The miniaturized printed antenna design is easy to integrate into the countermeasure equipment, which can reduce the volume and weight and is more convenient to carry. At the same time, the improved antenna has a wider frequency band and higher gain, and can counter a longer distance. This antenna design is more suitable for portable mobile drone countermeasure equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the first panel structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the second panel of the utility model;

[0022] Figure 3 It is a simulation schematic diagram of the utility model.

[0023] Markings in the figure: 100 - first panel, 200 - second panel, 300 - active oscillator, 400 - first reflection oscillator, 500 - guide oscillator, 600 - substrate, 700 - connecting column, 800 - second reflection oscillator, 900 - microstrip line, 110 - matching slot. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] like Figure 1 and Figure 2 As shown, a wide-band high-gain wireless signal anti-directional antenna for unmanned aerial vehicles includes a substrate, the substrate includes a first panel 100 and a second panel 200, wherein an active vibrator 300 is arranged on the first panel 100, and a first reflective vibrator 400 is arranged on the second panel 200, and the active vibrator 300 and the first reflective vibrator 400 are connected through a via hole;

[0027] A guide vibrator 500 is also arranged above the active vibrator 300, and the guide vibrator 500 is arranged along the width direction of the first panel 100; an open resonant ring unit is also arranged above the guide vibrator 500; the open resonant ring unit is used to improve the antenna gain;

[0028] The open resonant ring unit includes a base 600 and a connecting column 700; wherein, two connecting columns 700 are provided, the two connecting columns 700 are respectively connected to the ends of the base 600, and the two connecting columns 700 are arranged toward the middle of the base 600; an opening is formed between the two connecting columns 700.

[0029] A second reflection vibrator 800 is also arranged below the active vibrator 300. The second reflection vibrator (800) is used to reflect the signal to make the signal more concentrated.

[0030] A microstrip line 900 is disposed in the middle of the active vibrator 300 , and the microstrip line 900 is used to feed power to the active vibrator 300 .

[0031] Matching slots 110 are further provided on both sides of the microstrip line 900 , and the matching slots 110 are used to increase the bandwidth of the antenna.

[0032] A plurality of director vibrators 500 are provided, and the plurality of director vibrators 500 are arranged in sequence from top to bottom.

[0033] The base 600 is a U-shaped structure, and the opening of the base 600 is arranged along the width direction of the first panel 100 .

[0034] There are two groups of split resonant ring units, which are respectively arranged on two sides of the first panel 100 and are arranged opposite to each other.

[0035] The first reflector 400 is disposed on a side of the second panel 200 .

[0036] The vias are made of metal vias, for example, copper.

[0037] In the utility model, a printed circuit board wide-band high-gain directional antenna is proposed to replace the conventional Yagi antenna. The miniaturized printed antenna design is easy to integrate into the countermeasure equipment, which can reduce the volume and weight and is more convenient to carry. At the same time, the improved antenna has a wider frequency band and higher gain, and can counter a longer distance. This antenna design is more suitable for portable mobile drone countermeasure equipment.

[0038] Embodiment 2

[0039] This embodiment is a further refinement of the first embodiment.

[0040] Specific implementation method 1: Combination Figure 1 and Figure 2 This embodiment describes a novel high-bandwidth and high-gain printed Yagi antenna, which includes a substrate, an active vibrator 300, a microstrip line 900, a first reflection vibrator 400, a second reflection vibrator 800, three guiding vibrators 500 and four open resonant ring units.

[0041] The active vibrator 300 and the first reflective vibrator 400 are printed on the first panel 100 and the second panel 200 of the substrate respectively; wherein the active vibrator 300 and the first reflective vibrator 400 are both reflective metal layers composed of metal sheets. The three guide vibrators 500 and the split resonant ring unit are printed in sequence from top to bottom on the upper half of the first panel 100 of the substrate, the active vibrator 300 is printed in the middle of the first panel 100 of the substrate, the microstrip line 900 is connected to the middle of the active vibrator 300, and the active vibrator 300 is connected to the microstrip line 900 output through the slotted middle.

[0042] Specific implementation method two: Combination Figure 1 and Figure 2 The present embodiment is described. The length of the substrate of the novel high-bandwidth and high-gain printed Yagi antenna described in the present embodiment is 132 mm, the width of the substrate is 70 mm, and the thickness of the substrate is 1.6 mm.

[0043] Specific implementation method three: Combination Figure 1 and Figure 2To describe this embodiment, the length and width of the active vibrator 300 of a novel high-bandwidth and high-gain printed Yagi antenna described in this embodiment are 44×37 mm, the width of the three guiding vibrators 500 are 5 mm, the length of the microstrip line 900 is 24 mm, and the length of each guiding vibrator 500 is 42 mm.

[0044] The technical effect of this embodiment is that the impedance characteristics and radiation characteristics of the antenna are good. Other components and connection relationships are the same as those of the specific embodiment Wu Yi.

[0045] Specific implementation method four: combination Figure 1 and Figure 2 The present embodiment describes a novel high-bandwidth and high-gain printed Yagi antenna; the distance between two adjacent director oscillators 500 is 15 mm, and the distance between the active oscillator 300 and an adjacent director oscillator 500 is 14 mm.

[0046] The technical effect of this embodiment is that: with such a configuration, the impedance characteristics and radiation characteristics of the antenna are good. The other components and connection relationships are the same as those of the first embodiment.

[0047] The present invention combines the advantages of an open resonant ring unit with the design of a broadband Yagi end-fire antenna, and designs a novel broadband Yagi antenna loaded with an open resonant ring unit, with a gain increased by 1-2 dB. Figure 1 The structure diagram of the improved high-gain microstrip Yagi antenna is given. The broadband printed Yagi antenna based on the active monopole is mainly used. On this basis, four split resonant ring units are loaded on the upper end of the director oscillator 500. By optimizing the structural dimensions of the split resonant ring unit, the directivity of the antenna is improved.

[0048] The opening of the split resonant ring unit is folded to make the structure of the split resonant ring unit simple and easy to integrate. In order to better understand the advantages of the designed broadband quasi-Yagi antenna loaded with split resonant ring units, a comparative analysis is conducted with the prototype antenna. The reflection coefficient and gain of the prototype antenna and the quasi-Yagi antenna loaded with split resonant ring units are compared. The working frequency band of the antenna loaded with split resonant ring units is 2-3GH, which is basically the same as the prototype antenna without split resonant ring units; the gain in the frequency band is about 5.87-10.34dBi, and the gain in the band is increased by 2.0dB compared with the original antenna. This shows that the split resonant ring unit has little effect on the input impedance of the antenna, and can improve the radiation characteristics of the antenna and increase the gain of the antenna in the entire frequency band.

[0049] Secondly, the performance of the two antennas is analyzed from the perspective of radiation patterns. The radiation patterns of the Yagi antenna loaded with the split ring resonator unit and the prototype antenna are simulated at 2.2GHz and 3.0GHz in the xoy and voz planes, respectively. Figure 3It can be seen that the beam width of the Yagi antenna loaded with the split resonant ring unit is reduced at each frequency point compared with the prototype antenna, and the gain in the radiation direction is improved, which is more obvious in the high-frequency part.

[0050] Depend on Figure 3 It can be seen that within the working bandwidth, the refractive index of the substrate loaded with the open resonant ring unit is smaller than that of the substrate without the open resonant ring unit. When the electromagnetic wave radiated by the antenna enters the interface between two media with different refractive indices, refraction will occur. When the electromagnetic wave radiated by the printed Yagi antenna is incident on the loaded open resonant ring unit, it is incident from the medium with a large refractive index to the medium with a small refractive index. At the interface, the electromagnetic wave will converge, thereby enhancing the radiation characteristics of the antenna within the working frequency band and improving the gain. In summary, for the designed periodic open resonant ring unit, as long as the refractive index loaded on the substrate is lower than the refractive index when not loaded, loading it on the antenna will promote the improvement of its directivity. The smaller the refractive index, the more obvious the gain improvement.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles, characterized by: The invention comprises a substrate, wherein the substrate comprises a first panel (100) and a second panel (200), wherein an active vibrator (300) is arranged on the first panel (100), and a first reflective vibrator (400) is arranged on the second panel (200), and the active vibrator (300) and the first reflective vibrator (400) are connected via a via hole; A guide vibrator (500) is also arranged above the active vibrator (300), and the guide vibrator (500) is arranged along the width direction of the first panel (100); an open resonant ring unit is also arranged above the guide vibrator (500); the open resonant ring unit is used to improve the antenna gain; The open resonant ring unit comprises a base (600) and a connecting column (700); wherein two connecting columns (700) are provided, the two connecting columns (700) are respectively connected to the ends of the base (600), and the two connecting columns (700) are arranged toward the middle of the base (600); an opening is formed between the two connecting columns (700).

2. The broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles according to claim 1, characterized in that: A second reflection vibrator (800) is also arranged below the active vibrator (300), and the second reflection vibrator (800) is used to reflect signals to make the signals more concentrated.

3. The broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles according to claim 1, characterized in that: A microstrip line (900) is arranged in the middle of the active vibrator (300), and the microstrip line (900) is used to feed the active vibrator (300).

4. The broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles according to claim 3, characterized in that: Matching grooves (110) are also arranged on both sides of the microstrip line (900), and the matching grooves (110) are used to increase the bandwidth of the antenna.

5. The broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles according to claim 1, characterized in that: A plurality of guide vibrators (500) are provided, and the plurality of guide vibrators (500) are arranged in sequence from top to bottom.

6. The broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles according to claim 1, characterized in that: The base (600) is a U-shaped structure, and the opening of the base (600) is arranged along the width direction of the first panel (100).

7. The broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles according to claim 1, characterized in that: Two groups of open resonant ring units are provided. The two groups of open resonant ring units are respectively provided on two sides of the first panel (100), and the two groups of open resonant ring units are provided opposite to each other.

8. The broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles according to claim 1, characterized in that: The first reflective vibrator (400) is arranged on the side of the second panel (200).

9. The broadband high-gain wireless signal anti-directional antenna for unmanned aerial vehicles according to claim 1, characterized in that: The vias are metal vias.

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