CN112164876A - Antenna and unmanned aerial vehicle's ground control system - Google Patents
Antenna and unmanned aerial vehicle's ground control systemDownload PDFInfo
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- CN112164876A CN112164876ACN202011050640.5ACN202011050640ACN112164876ACN 112164876 ACN112164876 ACN 112164876ACN 202011050640 ACN202011050640 ACN 202011050640ACN 112164876 ACN112164876 ACN 112164876A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/108—Combination of a dipole with a plane reflecting surface
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/062—Two dimensional planar arrays using dipole aerials
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
Technical Field
The invention relates to the field of data transmission, in particular to an antenna and a ground control system of an unmanned aerial vehicle.
Background
In the field of unmanned aerial vehicles, an omnidirectional antenna is generally used to transmit data (such as control instructions, images, and the like) between an unmanned aerial vehicle and a ground control system. The omnidirectional antenna is generally a dipole type or a circularly polarized omnidirectional antenna similar to a dipole, and is limited by the gain characteristic of the antenna, so that the data transmission distance is short. Therefore, when the distance between the unmanned aerial vehicle and the ground control system is far away or the unmanned aerial vehicle and the ground control system have obstacles, the data transmitted by the omnidirectional antenna of the ground control system cannot smoothly reach the unmanned aerial vehicle, so that the ground control system is disconnected from the unmanned aerial vehicle.
Disclosure of Invention
The invention provides an antenna and a ground control system of an unmanned aerial vehicle, which aim to optimize the performance of the antenna, increase the communication distance between the unmanned aerial vehicle and the ground control system and improve the communication quality.
Specifically, the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present invention provides an antenna, including a substrate, a plurality of dipoles printed on the substrate, and a feed network, where the dipoles include a dipole unit disposed on one side of the substrate and a dipole unit disposed on the other side of the substrate, where the dipole unit includes a first dipole and a second dipole;
the feed network is connected with each oscillator unit;
the vibrator units arranged on each side of the two sides of the substrate are distributed in an axial symmetry mode, and the vibrator units arranged on one side of the substrate and the vibrator units on the other side of the substrate are distributed in a mirror image mode.
Optionally, the vibrator unit includes one first vibrator and two second vibrators.
Optionally, the length of the first oscillator is greater than the length of the second oscillator.
Optionally, the two second oscillators are symmetrically arranged on two sides of the first oscillator.
Optionally, the first oscillator includes a first main body portion and a first bending portion, and the two second oscillators are symmetrically disposed on two sides of the first main body portion.
Optionally, the first bending portion is disposed at one end of the first main body portion, and the two second oscillators are symmetrically disposed at the other end of the first main body portion.
Optionally, one end of the first main body portion is vertically connected to the middle of the first bending portion.
Optionally, the second vibrators include second main body portions and second bending portions, wherein the second main body portions of the two second vibrators are disposed at one end, far away from the first bending portion, of the first main body portion, and the first main body portion is perpendicular to the second main body portion.
Optionally, the second bending portion is vertically disposed at an end of the second main body portion away from the first main body portion, wherein the second bending portion extends toward the first bending portion.
Optionally, the antenna further includes a ground plate, and the substrate is disposed in parallel with the ground plate at a predetermined distance.
Optionally, the feed network includes a feeding point, and the feed network includes a first feeding portion for connecting two oscillator units, a second feeding portion for connecting two first feeding portions, a third feeding portion for connecting two second feeding portions, and a fourth feeding portion for connecting a third feeding portion and a feeding point, where line widths of the second feeding portion, and the fourth feeding portion are greater than a line width of the first feeding portion.
In a second aspect, an embodiment of the present invention provides a ground control system for an unmanned aerial vehicle, including:
the antenna of any preceding claim, wherein the control terminal is connected to the antenna by a feeder;
the control terminal is used for generating a control instruction for the unmanned aerial vehicle;
the antenna is used for sending the control command to the unmanned aerial vehicle.
According to the technical scheme provided by the embodiment of the invention, the oscillator units arranged on each of the two sides of the substrate are in axial symmetry distribution, and the oscillator units arranged on one side of the substrate and the oscillator units arranged on the other side of the substrate are in mirror image distribution, so that the signal radiated by the antenna has directionality, the gain of the antenna is large, and the data acquisition and transmission distance is long. The first oscillator and the second oscillator are arranged, so that the capture and transmission of dual-band data are realized. The oscillator units are printed on two sides of the substrate respectively, and the radiating surface is increased. The antenna has good matching performance and radiation performance, and the gain of the antenna in the band is stable.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a perspective view of an antenna on one side of a substrate in an embodiment of the present invention;
FIG. 2 is a perspective view of an antenna on the other side of a substrate in an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an antenna in an embodiment of the present invention;
FIG. 4 is a perspective view of an antenna in an embodiment of the present invention;
fig. 5 is a schematic diagram of port matching characteristics of an antenna over a frequency band according to an embodiment of the present invention;
fig. 6 is a schematic diagram of port matching characteristics of an antenna in another frequency band according to an embodiment of the present invention;
FIG. 7 is a diagram illustrating the magnitude of gain fluctuation of an antenna over a frequency band according to an embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating the gain fluctuation of the antenna in another frequency band according to an embodiment of the present invention;
fig. 9 is a schematic view of the radiation direction of the antenna in one frequency band according to the embodiment of the present invention;
fig. 10 is a schematic view of the radiation direction of the antenna in another frequency band according to the embodiment of the present invention;
fig. 11 is a schematic diagram of the main cross polarization of the antenna over a frequency band in an embodiment of the present invention;
fig. 12 is a schematic diagram of the main cross polarization of the antenna at another frequency band in an embodiment of the present invention;
FIG. 13 is a graph illustrating gain curves of an antenna over a frequency band according to an embodiment of the present invention;
FIG. 14 is a graph illustrating gain curves of the antenna in another frequency band according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a ground control system of the unmanned aerial vehicle in the embodiment of the present invention;
fig. 16 is a schematic structural diagram of the drone system in an embodiment of the present invention.
Reference numerals:
100: an antenna;
200: a ground control system of the unmanned aerial vehicle; 201: a control terminal;
300: an unmanned aerial vehicle system; 301: an unmanned aerial vehicle;
1: a substrate;
2: a dipole; 20: a vibrator unit; 21: a first vibrator; 211: a first main body portion; 212: a first bent portion; 22: a second vibrator; 221: a second main body portion; 222: a second bent portion;
3: a feed network; 31: a feed point; 32: a first feeder; 33: a second feeder; 34: a third feeder; 35: a fourth feeder; 36: a connecting portion;
4: a ground plate;
5: a fixed part.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The antenna and the ground control system of the unmanned aerial vehicle of the invention are explained in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
With reference to fig. 1 to 4, an embodiment of the present invention provides anantenna 100, where the antenna is a directional antenna, and theantenna 100 includes asubstrate 1, adipole 2, afeeding network 3, and aground plane 4. Thedipole 2 includes avibrator unit 20 disposed on one side of thesubstrate 1 and avibrator unit 20 disposed on the other side of thesubstrate 1, and thevibrator unit 20 includes afirst vibrator 21 and asecond vibrator 22. Thedipoles 2 and thefeed network 3 are printed on thesubstrate 1, so that thedipoles 2 and thefeed network 3 are fixed. Thefeed network 3 is connected with eachoscillator unit 20, so that thefeed network 3 realizes the communication between each oscillator unit and external equipment. Thesubstrate 1 and the grounding plate are arranged in parallel at a preset distance H.
In the embodiment of the present invention, theground plate 4 is disposed in parallel at a predetermined distance H on one side of thesubstrate 1, so that the signal radiated by theantenna 100 has directionality, the gain of theantenna 100 is large, and the data transmission distance is long, wherein an air layer is disposed between thesubstrate 1 and theground plate 4, thereby ensuring that theantenna 100 has good radiation characteristics. The lengths of thefirst vibrator 21 and thesecond vibrator 22 can be set as required, thereby realizing the transmission of dual-band data. Theoscillator units 20 are printed on both sides of thesubstrate 1, respectively, to increase the radiation surface. Theantenna 100 of the present invention has good matching performance and radiation performance, and theantenna 100 has stable in-band gain. Referring to fig. 1 and 2, in the present embodiment, a part of thefeeding network 3 is disposed on one side of thesubstrate 1, and another part is disposed on the other side of thesubstrate 1, wherein thefeeding network 3 on the same side of thesubstrate 1 is connected to each of theoscillator units 20 on the same side.
The number of thevibrator units 20 on both sides of thesubstrate 1 can be set as required. Optionally, the number of theoscillator units 20 on both sides of thesubstrate 1 is even. In this embodiment, even number of thevibrator units 20 disposed on each side of the substrate are axially and symmetrically distributed. In some embodiments, the number of thevibrator units 20 on both sides of thesubstrate 1 is 8, and the number of the dipoles in the embodiment of the present invention is 8.
For convenience of description, a side of thesubstrate 1 away from theground plate 4 is referred to as an upper surface of thesubstrate 1, and a side of thesubstrate 1 close to theground plate 4 is referred to as a lower surface of thesubstrate 1, and a structure of the upper surface of thesubstrate 1 will be explained below.
Referring to fig. 1 and 2, in the present embodiment, thevibrator unit 20 includes afirst vibrator 21 and twosecond vibrators 22. The length of thefirst element 21 is greater than that of thesecond element 22, so that theantenna 100 realizes dual-frequency transmission, and the frequency band of the signal radiated by thefirst element 21 is lower than that of the signal radiated by the second element. Optionally, the frequency band range of the signal transmitted by thefirst oscillator 21 is up and down floating at 2.4GHz (e.g., 2.4GHz to 2.5GHz), the frequency band range of the signal transmitted by thesecond oscillator 22 is in a 5G full frequency band (e.g., 5.1GHz to 5.85GHz), and the 5G full frequency band includes 5.8 GHz.
In some embodiments, the twosecond elements 22 are symmetrically disposed on two sides of thefirst element 21, so that the radiation patterns of thefirst element 21 and thesecond element 22 are more symmetrical, the main polarization cross isolation of the antenna is high, and signal transmission is more uniform. Referring to fig. 1 and 2, thefirst vibrator 21 includes afirst body 211 and a firstbent portion 212, and the twosecond vibrators 22 are symmetrically disposed on both sides of thefirst body 211. By providing thefirst body portion 211 and thefirst bending portion 212, the structural arrangement of thefirst element 21 is compact, and the overall size of theantenna 100 is reduced. Alternatively, thefirst bending portion 212 is disposed at one end of the firstmain body portion 211, and the twosecond oscillators 22 are symmetrically disposed at the other end of the firstmain body portion 211. Thefirst bending portion 212 is connected to one end of the firstmain body portion 211, and the twosecond oscillators 22 are connected to the other end of the firstmain body portion 211.
In some embodiments, one end of the firstmain body portion 211 is vertically connected to the middle of thefirst bending portion 212, so that the arrangement of thefirst element 21 is further compact, and the overall size of theantenna 100 is reduced, and the structure of thefirst element 21 is a symmetrical structure, so that the radiation pattern of thefirst element 21 is more symmetrical, and the signal transmission is more uniform. In this embodiment, thefirst transducer 21 can be seen as a "T" shaped structure.
Referring to fig. 1 and fig. 2, thesecond vibrator 22 includes a secondmain body portion 221 and asecond bending portion 222, wherein the secondmain body portions 221 of the twosecond vibrators 22 are symmetrically connected to one end of the firstmain body portion 211, which is far away from the first bending portion, and the firstmain body portion 211 is perpendicular to the secondmain body portion 221.
Thesecond bending portion 222 is vertically disposed at an end of the secondmain body 221 away from the firstmain body 211, wherein thesecond bending portion 222 extends toward thefirst bending portion 212, and thesecond vibrator 22 is similar to an "L" shaped structure. It should be noted that, in order to achieve the dual-frequency characteristic and facilitate the adjustment of the performance parameters of thefirst oscillator 21 and thesecond oscillator 22, thefirst bending portion 212 and thesecond bending portion 222 do not intersect.
In this embodiment, referring to fig. 4, theoscillator units 20 disposed on the lower surface of thesubstrate 1 and the oscillator units disposed on the upper surface of the substrate are distributed in a mirror image, so as to increase the radiation surface, and theantenna 100 has better radiation performance, matching performance and stable gain. Wherein, adipole 2 is formed by onevibrator unit 20 on the upper surface of thesubstrate 1 and one vibrator unit on the lower surface of thesubstrate 1 which are distributed in a mirror image manner. For example, 8oscillator units 20 are disposed on the upper surface of thesubstrate 1, 8oscillator units 20 are correspondingly disposed on the lower surface of thesubstrate 1, and the antenna includes 8dipoles 2. In this embodiment, eachdipole 2 is shaped like a butterfly.
With reference to fig. 1 and 2, the feeding network includes afeeding point 31, afirst feeding portion 32, asecond feeding portion 33, athird feeding portion 34, and afourth feeding portion 35. Thefirst feeder part 32 is used for connecting two oscillator units, thesecond feeder part 33 is used for connecting twofirst feeder parts 32, thethird feeder part 34 is used for connecting twosecond feeder parts 33, and thefourth feeder part 35 is used for connecting thethird feeder part 34 and thefeeding point 31.
In order to match with thevibrator unit 20, in the present embodiment, the line widths of thefirst feeder portion 32, thesecond feeder portion 33, thethird feeder portion 34, and thefourth feeder portion 35 need to be set to a width matching with thevibrator unit 20. Specifically, the line widths of thesecond feeder 33, thethird feeder 34, and thefourth feeder 35 are greater than the line width of thefirst feeder 32. The line width of both ends of thesecond feeder portion 33 is larger than the line width of the middle portion thereof, and the line width of both ends of thethird feeder portion 34 is larger than the line width of the middle portion thereof.
Referring again to fig. 1 and 2, the feed network further includes aconnection portion 36 connected to the vibrator unit. Alternatively, theconnection portion 36 is connected to an end surface of a connection portion where the first and second transducers are connected, and specifically, theconnection portion 36 is connected to an end surface of a connection portion where the first andsecond body portions
In order to match thevibrator unit 20, in the present embodiment, the line width of the connectingportion 36 is gradually reduced in a direction away from the vibrator unit. Specifically, the line width of theconnection portion 36 is linearly decreased in a direction away from the vibrator unit.
Referring to fig. 4, in the present embodiment, thefeeding network 3 on the upper surface of thesubstrate 1 and thefeeding network 3 on the lower surface of thesubstrate 1 are overlapped, and theconnection portions 36 disposed on the lower surface of thesubstrate 1 and theconnection portions 36 disposed on the upper surface of the substrate are arranged in a mirror image manner so as to match with thevibrator unit 20.
Theantenna 100 of the embodiment of the present invention is connected to an external device through a feeder. Specifically, the inner core of the feeder line is connected with thefeed network 3 on one side of thesubstrate 1, and the outer conductor of the feeder line is connected with thefeed network 3 on the other side of the substrate, so that the connection mode is simple and convenient.
In this embodiment, theantenna 100 is connected to a feed line through afeed point 31. Optionally, thefeeding point 31 on the upper surface of thesubstrate 1 and thefeeding point 31 on the lower surface thereof are communicated by the same via hole, the inner core of the feeder is welded to thefeeding point 31 on the upper surface of thesubstrate 1 through the via hole, the outer conductor of the feeder is directly welded to thefeeding point 31 on the lower surface of thesubstrate 1, and the external device is connected to the antenna through the feeder line, so that the signal generated by the external device is transmitted to each of theoscillator units 20 by using thefeeding network 3, and is emitted by each of theoscillator units 20, thereby implementing the signal emission function of theantenna 100; or, the signal received by eachoscillator unit 20 is transmitted to an external device through thefeed network 3, thereby realizing a signal receiving function. Optionally, the feeder is a coaxial cable.
It should be noted that, in the embodiment of the present invention, the positions of the upper surface and the lower surface of thesubstrate 1 may be interchanged, that is, the upper surface of thesubstrate 1 is disposed toward theground plate 4, the lower surface of thesubstrate 1 is disposed away from theground plate 4, when theantenna 100 is connected to an external device through a feeder, an inner core of the feeder is connected to thefeed network 3 on the lower surface of thesubstrate 1, and an outer conductor of the feeder is connected to thefeed network 3 on the upper surface of thesubstrate 1.
In this embodiment, thesubstrate 1 may be a ceramic layer or a plastic layer. Optionally, thedipoles 2 and thefeed network 3 are printed on two sides of thesubstrate 1 by a double-sided copper-clad process, and the processing is easy.
At present, the design of the directional antenna is generally that thesubstrate 1 provided with thedipoles 2 and thefeed network 3 is arranged vertically or obliquely with theground plate 4. In this embodiment, theground plate 4 and thesubstrate 1 are disposed at regular intervals and a predetermined distance is set between theground plate 1 and the substrate, and an air layer is disposed between theground plate 1 and the substrate, so that the performance of theantenna 100 is better. Specifically, theground plate 4 serves as a reflection plate of theantenna 100, and the parallel arrangement thereof can uniformly reflect radiation generated by theantenna 100 in all directions, so that theantenna 100 has directivity, the gain of theantenna 100 is increased, and the signal transmission distance is long. Optionally, theground plate 4 is a metal plate, such as an aluminum plate, a steel plate, or an alloy plate. Preferably, theground plate 4 is an aluminum plate.
In order to provideantenna 100 with good directivity, in some examples, referring to fig. 3, the area ofground plane 4 is greater than the area ofsubstrate 1, and the directivity ofantenna 100 is achieved by reflection ofground plane 4, which causes the signal to be transmitted in a direction away fromsubstrate 1. In other examples, theground plane 4 has an area equal to the area of thesubstrate 1, which ensures better directivity of theantenna 100 while theantenna 100 is designed to be small in size.
In order to achieve the fixation between thesubstrate 1 and theground plate 4, so that theground plate 4 can be kept at a preset distance H from theground plate 4, so that the performance of theantenna 100 can be maintained to be optimal, and at the same time, theantenna 100 can normally transmit signals, thesubstrate 1 and theground plate 4 are connected through a connector.
In certain embodiments, the connector is an insulated connector. Optionally, the insulating connector is made of plastic or other insulating materials, and the embodiment of the present invention does not limit the material of the insulating connector, and any insulating material falls within the protection scope of the present invention.
In some embodiments, the connecting member may be a metal connecting member, and the material of the metal connecting member is not particularly limited in the present invention. It should be noted that the position of the metal connecting element on thesubstrate 1 should be far away from the position where theelement unit 20 and thefeeder network 3 are disposed on thesubstrate 1, so as to prevent the metal connecting element from affecting the performance of the antenna.
With reference to fig. 1, 2 and 4, thesubstrate 1 is provided with a fixingportion 5, and theground plate 4 is provided with a fixing end engaged with the fixingportion 5. Alternatively, the fixingportion 5 and the fixing end may be fixing holes, clamping grooves or other fixing structures.
In some embodiments, the fixingportion 5 and the fixing end are fixing holes, and one end of the connecting member is inserted into the fixingportion 5, and the other end of the connecting member is inserted into the fixing end, so as to stably maintain theground plane 4 at a predetermined distance H on one side of thesubstrate 1, thereby maintaining the performance of theantenna 100 to be optimized.
In some embodiments, the fixingportion 5 and the fixing end are each a clip groove, and one end of the insulation connection is clipped on the fixingportion 5, and the other end is clipped on the fixing end, so as to stably maintain theground plate 4 at a predetermined distance H on one side of thesubstrate 1, thereby maintaining the performance of theantenna 100 to be optimized.
In order to further enable theground plate 4 to be stably arranged at the preset distance H of thesubstrate 1, thereby maintaining the performance optimization of theantenna 100, at least two of the fixingportions 5 and at least two of the fixing ends are provided, at least two of the fixingportions 5 are correspondingly matched with at least two of the fixing ends, and the connection position between theground plate 4 and thesubstrate 1 is increased, thereby ensuring the stability of the connection between theground plate 4 and thesubstrate 1. Optionally, at least two of the fixingportions 5 and at least two of the fixing ends are dispersedly distributed on thesubstrate 1 and theground plate 4, respectively. Preferably, at least two of the fixingportions 5 are uniformly distributed on thesubstrate 1, for example, at least two of the fixingportions 5 are uniformly distributed around the center of thesubstrate 1. Correspondingly, at least two fixed ends are also uniformly distributed on the ground.
In this embodiment, the preset distance H may be adjustable, for example, the preset distance H may be determined according to one or more of an operating frequency (i.e., a frequency of a transmission signal), a radiation pattern, and a return loss. Preferably, the preset distance H is determined according to the three factors of the working frequency, the radiation pattern and the return loss of the signal, so as to balance the working frequency, the radiation pattern and the return loss, and ensure the optimization of the performance of theantenna 100 to meet the requirements of users. Alternatively, the preset distance H is 12mm (unit: mm), that is, the distance of theantenna 100 in the signal transmission direction is 12mm, the thickness is small, and the profile of theantenna 100 is low.
In this embodiment, theground plate 4 and thesubstrate 1 are arranged in parallel, so that the performance of thewhole antenna 100 can be maintained in an optimal state, the structure is simple, and thesubstrate 1 and theground plate 4 are more conveniently connected.
Referring to fig. 5 and 6, the port matching test results of the antenna of the embodiment of the present invention in the frequency bands of 2.2GHz to 2.8GHz and 5.0GHz to 6.5GHz respectively show that the antenna has better port matching characteristics in the above two frequency band ranges.
Referring to fig. 7 and 8, it is shown that the gain fluctuation of the antenna according to the embodiment of the present invention in the frequency bands of 2.2GHz to 2.8GHz and 5.0GHz to 6.5GHz respectively shows that the gain fluctuation range of the antenna in the frequency band of 2.4GHz does not exceed 0.5dB (unit: dB), the gain fluctuation of the antenna in the full frequency band of 5GHz does not exceed 2dB, and the gain fluctuation range of the antenna in the two frequency bands is smaller.
Referring to fig. 9 and fig. 10, it is shown that the antenna of the embodiment of the present invention is located in the radiation directions of the 2.2GHz to 2.8GHz band and the 5.0GHz to 6.5GHz band, respectively, which shows that the main lobe of the antenna in the 2.4GHz band and the 5GHz full band is clearly directed, the back lobe is small, and the antenna performance is excellent.
Referring to fig. 11 and 12, the main cross polarization data of the antenna of the embodiment of the present invention in the frequency bands of 2.2GHz to 2.8GHz and 5.0GHz to 6.5GHz respectively show that the antenna has high main cross polarization in the frequency band of 2.4GHz and the full frequency band of 5GHz, and the range of the main lobe direction is greater than 30 dB.
Referring to fig. 13 and 14, it is shown that the gain curves of the antenna according to the embodiment of the present invention in the frequency bands of 2.2GHz to 2.8GHz and 5.0GHz to 6.5GHz respectively show that the performance of the antenna in the frequency band of 2.4GHz and the full frequency band of 5GHz is well matched with the simulation result.
It should be noted that theantenna 100 of the embodiment of the present invention may be applied to various systems that need to transmit or receive signals, such as a ground control system of an unmanned aerial vehicle, an unmanned aerial vehicle system, a control system of a robot, or a control system of a remote-controlled automobile.
The following describes a specific application of theantenna 100 according to the embodiment of the present invention, by taking a ground control system of an unmanned aerial vehicle and an unmanned aerial vehicle system as examples.
Referring to fig. 15, an embodiment of the present invention further provides a ground control system for an unmanned aerial vehicle, where theground control system 200 includes acontrol terminal 201 and theantenna 100. Optionally, thecontrol terminal 201 may include one or more of a remote controller, a smart phone, a tablet computer, a laptop computer, a wearable device (watch, bracelet, etc.).
Thecontrol terminal 201 is connected with theantenna 100 through a feeder line, so that the communication connection between thecontrol terminal 201 and theantenna 100 is realized. Specifically, the inner core of the feeder is connected to thefeed network 3 on one side of thesubstrate 1 of theantenna 100, and the outer conductor of the feeder is connected to thefeed network 3 on the other side of thesubstrate 1.
In some embodiments, theantenna 100 is disposed outside thecontrol terminal 201, so as to avoid an influence of a structure of thecontrol terminal 201 itself on signal transmission of theantenna 100, for example, if a housing of thecontrol terminal 201 is made of a metal material, it is likely that a signal received or transmitted by theantenna 100 is completely shielded, thereby affecting normal operation of a device. In some embodiments, theantenna 100 is disposed inside thecontrol terminal 201, so that theantenna 100 is conveniently stored, theantenna 100 is prevented from being lost and damaged, and the service life is prolonged.
In some embodiments, thecontrol terminal 201 is configured to generate a control command for the drone, and theantenna 100 is configured to send the control command to the drone. Specifically,control terminal 201 generates the control command of unmanned aerial vehicle to transmit toantenna 100 by the feeder, thereby will byantenna 100 control command sends to unmanned aerial vehicle, realizes the control to unmanned aerial vehicle. Theantenna 100 of the embodiment of the invention is suitable for remotely controlling the unmanned aerial vehicle, and theantenna 100 has high gain and strong stability. In addition, theantenna 100 of the embodiment of the invention can be used for transmitting signals of 2.4GHz frequency bands and 5.8GHz full frequency bands, and is suitable for various types of unmanned aerial vehicles.
In some embodiments, theantenna 100 is further configured to receive data information sent by the drone, and thecontrol terminal 201 is further configured to display the data information, so as to display information returned by the drone in real time. Optionally, the data information at least includes one or more of image data information shot by shooting equipment on the unmanned aerial vehicle, position data information of the unmanned aerial vehicle, and electric quantity information of the unmanned aerial vehicle, so as to realize real-time monitoring of the motion of the unmanned aerial vehicle.
Referring to fig. 16, an embodiment of the present invention further provides a drone system, where thedrone system 300 includes adrone 301 and anantenna 100. The unmanned aerial vehicle can be a rotor unmanned aerial vehicle or a non-rotor unmanned aerial vehicle.
The unmannedaerial vehicle 301 and theantenna 100 are connected through a feeder line, so that the communication connection between the unmannedaerial vehicle 301 and theantenna 100 is realized. Specifically, the inner core of the feeder is connected to thefeed network 3 on one side of thesubstrate 1 of theantenna 100, and the outer conductor of the feeder is connected to thefeed network 3 on the other side of thesubstrate 1.
In some embodiments, theantenna 100 is disposed outside thedrone 301, so as to avoid the influence of the structure of thedrone 301 itself on the signal transmission of theantenna 100, for example, if the housing of the drone is made of metal, it is likely to completely shield the signal received or transmitted by theantenna 100, thereby affecting the normal operation of the device. In some embodiments, theantenna 100 is disposed inside thedrone 301, so that theantenna 100 can be conveniently stored, theantenna 100 is prevented from being lost and damaged, and the service life is prolonged.
In some embodiments, theantenna 100 is configured to receive a drone control instruction sent by the control terminal, and thedrone 301 is configured to execute the control instruction received by the antenna. Theantenna 100 of the embodiment of the invention is suitable for receiving the control instruction sent by the control terminal in a long distance so that the control terminal can control the unmanned aerial vehicle in a long distance, and theantenna 100 has high gain and strong stability. In addition, theantenna 100 of the embodiment of the invention can be used for transmitting signals of 2.4GHz frequency bands and 5.8GHz full frequency bands, and is suitable for various types of unmanned aerial vehicles.
In some embodiments, thedrone 301 is configured to obtain data information, and theantenna 100 sends the data information of thedrone 301 to the control terminal, so that the control terminal can know the data information of thedrone 301 in real time. Specifically, after acquiring the data information, thedrone 301 sends the data information to theantenna 100, and theantenna 100 transmits the data information of thedrone 301, so that the control terminal receives the data information of thedrone 301 transmitted by the antenna. Optionally, the data information at least includes one or more of image data information shot by shooting equipment on the unmanned aerial vehicle, position data information of the unmanned aerial vehicle, and electric quantity information of the unmanned aerial vehicle, so as to realize real-time monitoring of the motion of the unmanned aerial vehicle.
In the description of the present invention, "up", "down", "front", "back", "left" and "right" should be understood as "up", "down", "front", "back", "left" and "right" directions of theantenna 100 formed by thesubstrate 1 and theground plate 4 in this order from top to bottom.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The antenna, the ground control system of the unmanned aerial vehicle and the unmanned aerial vehicle system provided by the embodiment of the invention are described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (12)
1. An antenna comprises a substrate, a plurality of dipoles printed on the substrate and a feed network, and is characterized in that the dipoles comprise oscillator units arranged on one side of the substrate and oscillator units arranged on the other side of the substrate, wherein each oscillator unit comprises a first oscillator and a second oscillator;
the feed network is connected with each oscillator unit;
the vibrator units arranged on each side of the two sides of the substrate are distributed in an axial symmetry mode, and the vibrator units arranged on one side of the substrate and the vibrator units on the other side of the substrate are distributed in a mirror image mode.
2. The antenna of claim 1, wherein the element unit comprises a first element and two second elements.
3. An antenna according to claim 1 or 2, characterized in that the length of the first element is greater than the length of the second element.
4. An antenna according to claim 2 or 3, characterized in that the two second elements are arranged symmetrically on both sides of the first element.
5. The antenna of claim 4, wherein the first element comprises a first main body portion and a first bending portion, and the two second elements are symmetrically arranged on two sides of the first main body portion.
6. The antenna according to claim 5, wherein the first bending portion is disposed at one end of the first main body portion, and the two second elements are symmetrically disposed at the other end of the first main body portion.
7. The antenna of claim 6, wherein one end of the first main body is vertically connected to the middle of the first bending part.
8. The antenna according to any one of claims 5 to 7, wherein the second elements comprise second main body portions and second bending portions, wherein the second main body portions of the two second elements are arranged at one end of the first main body portion, which is far away from the first bending portion, and the first main body portions are perpendicular to the second main body portions.
9. The antenna of claim 8, wherein the second bending portion is vertically disposed at an end of the second main body portion away from the first main body portion, and wherein the second bending portion extends toward the first bending portion.
10. The antenna of claim 1, further comprising a ground plate, wherein the substrate is disposed parallel to the ground plate at a predetermined distance.
11. The antenna of claim 1, wherein the feeding network comprises a feeding point, and the feeding network comprises a first feeding portion for connecting two element units, a second feeding portion for connecting two first feeding portions, a third feeding portion for connecting two second feeding portions, and a fourth feeding portion for connecting the third feeding portion and the feeding point, wherein the line widths of the second feeding portion, and the fourth feeding portion are greater than the line width of the first feeding portion.
12. A ground control system of an unmanned aerial vehicle, comprising:
a control terminal and an antenna as claimed in any of claims 1 to 11, wherein the control terminal is connected to the antenna by a feeder;
the control terminal is used for generating a control instruction for the unmanned aerial vehicle;
the antenna is used for sending the control command to the unmanned aerial vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011050640.5ACN112164876A (en) | 2017-04-21 | 2017-04-21 | Antenna and unmanned aerial vehicle's ground control system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201780004497.6ACN108475844B (en) | 2017-04-21 | 2017-04-21 | Antennas, ground control systems for drones, and drone systems |
| PCT/CN2017/081526WO2018191982A1 (en) | 2017-04-21 | 2017-04-21 | Antenna, ground control system of unmanned aerial vehicle, and unmanned aerial vehicle system |
| CN202011050640.5ACN112164876A (en) | 2017-04-21 | 2017-04-21 | Antenna and unmanned aerial vehicle's ground control system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780004497.6ADivisionCN108475844B (en) | 2017-04-21 | 2017-04-21 | Antennas, ground control systems for drones, and drone systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112164876Atrue CN112164876A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780004497.6AExpired - Fee RelatedCN108475844B (en) | 2017-04-21 | 2017-04-21 | Antennas, ground control systems for drones, and drone systems |
| CN202011050640.5AWithdrawnCN112164876A (en) | 2017-04-21 | 2017-04-21 | Antenna and unmanned aerial vehicle's ground control system |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780004497.6AExpired - Fee RelatedCN108475844B (en) | 2017-04-21 | 2017-04-21 | Antennas, ground control systems for drones, and drone systems |
Country Status (2)
| Country | Link |
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| CN (2) | CN108475844B (en) |
| WO (1) | WO2018191982A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067143A (en)* | 2021-04-29 | 2021-07-02 | 深圳市道通智能航空技术股份有限公司 | Antenna and remote controller |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3587110A (en)* | 1969-07-01 | 1971-06-22 | Rca Corp | Corporate-network printed antenna system |
| GR1003738B (en)* | 2001-02-02 | 2001-12-14 | Ιντρακομ Α.Ε. Ελληνικη Βιομηχανια Τηλεπικοινωνιων Και Συστηματων. | Windband printed antenna system |
| US20050035919A1 (en)* | 2003-08-15 | 2005-02-17 | Fan Yang | Multi-band printed dipole antenna |
| KR100672967B1 (en)* | 2005-11-11 | 2007-01-22 | 삼성탈레스 주식회사 | Circularly polarized antenna |
| CN102447163B (en)* | 2010-10-08 | 2013-08-07 | 中国移动通信集团设计院有限公司 | Broadband double polarization omnidirectional antenna and feed method |
| CN202275941U (en)* | 2011-09-30 | 2012-06-13 | 中兴通讯股份有限公司 | Printed type antenna and mobile communication device |
| CN102629708A (en)* | 2011-12-27 | 2012-08-08 | 广西工学院 | WIFI (wireless fidelity) mobile terminal plane antenna |
| CN102683836B (en)* | 2012-04-28 | 2015-08-19 | 深圳光启创新技术有限公司 | A kind of GPRS antenna |
| CN103187635B (en)* | 2012-09-24 | 2014-11-26 | 张伟强 | Multi-band dipole antenna |
| CN204088569U (en)* | 2014-09-28 | 2015-01-07 | 航天信息股份有限公司 | Antenna |
| CN205122763U (en)* | 2015-10-16 | 2016-03-30 | 天津七六四通信导航技术有限公司 | Be applied to two waveband dual -frenquency microstrip paster antenna of L wave band and C wave band |
| CN105490007A (en)* | 2016-01-07 | 2016-04-13 | 常熟市泓博通讯技术股份有限公司 | High-gain multiwire antenna for unmanned aerial vehicle |
| CN106056875A (en)* | 2016-05-26 | 2016-10-26 | 深圳市天鼎微波科技有限公司 | Achievement method of multi-antenna unmanned aerial vehicle system |
| CN106023560A (en)* | 2016-07-13 | 2016-10-12 | 无锡觅睿恪科技有限公司 | Folding type unmanned aerial vehicle remote controller |
- 2017
- 2017-04-21CNCN201780004497.6Apatent/CN108475844B/ennot_activeExpired - Fee Related
- 2017-04-21WOPCT/CN2017/081526patent/WO2018191982A1/ennot_activeCeased
- 2017-04-21CNCN202011050640.5Apatent/CN112164876A/ennot_activeWithdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN108475844A (en) | 2018-08-31 |
| CN108475844B (en) | 2020-10-30 |
| WO2018191982A1 (en) | 2018-10-25 |
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