CN110808452A - Dual-frequency antenna and unmanned aerial vehicle - Google Patents

Dual-frequency antenna and unmanned aerial vehicle Download PDF

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Publication number
CN110808452A
CN110808452A CN201911007050.1A CN201911007050A CN110808452A CN 110808452 A CN110808452 A CN 110808452A CN 201911007050 A CN201911007050 A CN 201911007050A CN 110808452 A CN110808452 A CN 110808452A
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CN
China
Prior art keywords
radiator
dual
microstrip line
conductor
horn
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911007050.1A
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Chinese (zh)
Inventor
谭杰洪
张桂林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Autel Robotics Co Ltd
Shenzhen Autel Intelligent Aviation Technology Co Ltd
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Autel Robotics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Autel Robotics Co Ltd filed Critical Autel Robotics Co Ltd
Priority to CN201911007050.1A priority Critical patent/CN110808452A/en
Publication of CN110808452A publication Critical patent/CN110808452A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/27Adaptation for use in or on movable bodies
    • H01Q1/28Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/285Aircraft wire antennas
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/48Earthing means; Earth screens; Counterpoises
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/10Resonant antennas
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands

Abstract

The invention discloses a dual-frequency antenna and an unmanned aerial vehicle, wherein the dual-frequency antenna comprises a substrate, a coaxial line, a grounding part, a first radiating body, a second radiating body and a sleeve radiating body, the substrate comprises a first surface, the coaxial line comprises an inner conductor and an outer conductor arranged in an insulating mode with the inner conductor, the grounding part is arranged on the first surface and is electrically connected with the outer conductor, the first radiating body is arranged on the first surface and is electrically connected with the inner conductor, the first radiating body and the grounding part are arranged at intervals, the second radiating body is arranged on the first surface and is electrically connected with the grounding part, the first radiating body and the second radiating body are arranged at intervals to feed power to the second radiating body in a coupling mode, and the sleeve radiating body is sleeved outside the coaxial line and one end of the sleeve radiating body is. The dual-frequency antenna disclosed by the invention has the advantages that the dual-frequency antenna can simultaneously cover two antenna frequency bands of 900MHz and 2.45GHz, the omnidirectional radiation performance of the dual-frequency antenna at the two frequency bands of 900MHz and 2.45GHz is better, the structure of the antenna can be effectively simplified, and the size of the antenna can be reduced.

Description

Dual-frequency antenna and unmanned aerial vehicle
Technical Field
The invention relates to the field of unmanned aerial vehicles, in particular to a dual-frequency antenna and an unmanned aerial vehicle adopting the dual-frequency antenna.
Background
With the rapid development of wireless communication and the demand of various service data, the antenna design is mainly developed towards miniaturization, multiple frequency bands and wide frequency bands. Dual-band (e.g., 900MHz and 2450MHz) antennas have good omni-directionality and are widely used in many applications. Two antennas of the existing dual-frequency antenna use two feeding coaxial lines to feed simultaneously on the front and back sides of the substrate, so that the feeding structure of the antenna is complex, two ports are required to be connected with the antenna in application, and the burden of a radio frequency end is increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention discloses a dual-frequency antenna and an unmanned aerial vehicle adopting the dual-frequency antenna.
In one aspect, the present invention discloses a dual-band antenna, including:
a substrate comprising a first surface;
a coaxial line including an inner conductor and an outer conductor insulated from the inner conductor;
the grounding piece is arranged on the first surface and is electrically connected with the outer conductor;
the first radiating body is arranged on the first surface and electrically connected with the inner conductor, and the first radiating body and the grounding piece are arranged at intervals;
the second radiator is arranged on the first surface and electrically connected with the grounding piece, and the first radiator and the second radiator are arranged at intervals so as to feed power to the second radiator in a coupling manner; and
and the sleeve radiating body is sleeved outside the coaxial line, and one end of the sleeve radiating body is electrically connected with the outer conductor.
As an improved mode, the first radiator includes a first microstrip line and a first oscillator arm, one end of the first microstrip line is connected to the first oscillator arm, and the other end of the first microstrip line is connected to the inner conductor.
As an improved mode, the first radiator further includes a second microstrip line, one end of the second microstrip line is connected to the first oscillator arm, the other end of the second microstrip line is connected to the first microstrip line, and the second microstrip line extends from the first microstrip line toward the first oscillator arm in a manner that the width of the second microstrip line gradually widens.
As an improved mode, the number of the second radiators is two, and the two second radiators are respectively arranged on two sides of the first microstrip line.
As an improved mode, each of the second radiators includes a third microstrip line and a second oscillator arm, where one end of the third microstrip line is connected to the ground element, and the other end of the third microstrip line is connected to the second oscillator arm.
As an improvement, the second oscillator arm is disposed on a side of the third microstrip line away from the first microstrip line.
As an improvement, the third microstrip line includes a first extension portion extending from the ground toward the first oscillator arm, and a second extension portion extending from one end of the first extension portion away from the ground toward the direction away from the first microstrip line, and the second oscillator arm extends from one end of the second extension portion away from the first microstrip toward the ground.
On the other hand, the invention discloses an unmanned aerial vehicle which comprises a machine body, a horn, a foot rest, a propeller mechanism and the dual-frequency antenna, wherein the machine body is arranged at one end of the horn and is connected with the horn, the foot rest and the propeller mechanism are arranged at the other end of the horn and are connected with the horn, a sleeve radiator is arranged in the horn, and a substrate is arranged in the foot rest.
As an improvement, the unmanned aerial vehicle further comprises a fixing piece arranged inside the horn to press and fix the sleeve radiator.
As an improvement, the horn includes an upper housing and a lower housing connected to the upper housing, and the fixing member is connected to the upper housing by a buckle and encloses a first receiving cavity for receiving the sleeve radiator with the lower housing.
As an improvement mode, the upper housing comprises a top wall and two side walls which are respectively arranged on two opposite sides of the top wall, each side wall is provided with a plurality of raised lines which are arranged at intervals along the extension direction of the horn, two sides of the fixing part are respectively provided with a plurality of first clamping grooves which are in one-to-one correspondence with the raised lines, and the fixing part is matched with the upper housing in a buckling manner through the raised lines and the first clamping grooves.
As an improvement, the unmanned aerial vehicle further comprises a wire for supplying power to the propeller mechanism and transmitting signals, and the fixing piece and the upper shell enclose to form a second accommodating cavity for accommodating the wire.
As an improvement, the foot rest comprises a third accommodating cavity for accommodating the substrate, two second clamping grooves which are oppositely arranged are formed in the inner side wall of the third accommodating cavity, and two sides of the substrate are respectively clamped in the two second clamping grooves.
The invention discloses a dual-frequency antenna which comprises a substrate, a coaxial line, a grounding part, a first radiating body, a second radiating body and a sleeve radiating body, wherein the grounding part, the first radiating body and the second radiating body are arranged on the first surface of the substrate, the first radiating body is connected with an inner conductor of the coaxial line and arranged at intervals with the grounding part, the second radiating body is connected with the grounding part, the first radiating body and the second radiating body are coupled and fed, the sleeve radiating body is sleeved outside the coaxial line, and one end of the sleeve radiating body is electrically connected with the outer conductor. The dual-frequency antenna of the design mode can simultaneously cover two dual-frequency bands of 900MHz and 2.45GHz, and is electrically connected with the inner conductor of the coaxial line by arranging the first radiator, while the second radiator is electrically connected with the outer conductor of the coaxial line by the grounding piece, and the first radiator and the second radiator are coupled and fed, so that the first radiator and the second radiator are not required to be respectively fed by arranging two coaxial lines, the structure of the antenna is effectively simplified, and because the first radiator and the second radiator are not required to be respectively fed by arranging two coaxial lines, the welding points of the first radiator and the second radiator are reduced, the welding procedures are reduced, and meanwhile, the stability of the product is improved due to the reduction of welding points; in addition, the first radiator is shared by the two dual-frequency bands of 900MHz and 2.45GHz, so that the size of the dual-frequency antenna is effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of a dual-band antenna disclosed in the embodiment of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
fig. 3 is a diagram illustrating S parameter test results of the dual band antenna shown in fig. 1;
FIG. 4 is a diagram illustrating the test results of the radiation direction of the 900MHz band of the dual-band antenna shown in FIG. 1;
fig. 5 is a schematic diagram illustrating a radiation direction test result of the dual-band antenna shown in fig. 1 in a 2.45GHz band;
FIG. 6 is a schematic structural diagram of an unmanned aerial vehicle according to an embodiment of the disclosure;
FIG. 7 is a schematic view of the combination of the horn, foot rest and propeller mechanism shown in FIG. 6;
FIG. 8 is an exploded view of the structure shown in FIG. 7;
FIG. 9 is an enlarged view of a portion of FIG. 8 at B;
FIG. 10 is a schematic structural view of the upper housing and the propeller mechanism;
fig. 11 is a schematic cross-sectional view of the horn.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1-3, an embodiment of the invention discloses a dual-band antenna 100, which includes a substrate 10, a coaxial line 20, a ground element 30, a first radiator 40, a second radiator 50, and a sleeve radiator 60. The substrate 10 comprises a first surface 11; the coaxial line 20 includes an inner conductor 21 and an outer conductor 22 provided insulated from the inner conductor 21; the grounding piece 30 is arranged on the first surface 11 and is electrically connected with the outer conductor 22; the first radiator 40 is arranged on the first surface 11 and electrically connected with the inner conductor 21, and the first radiator 40 and the grounding piece 30 are arranged at intervals; the second radiator 50 is arranged on the first surface 11 and electrically connected to the ground element 30, and the first radiator 40 and the second radiator 50 are arranged at intervals to feed power to the second radiator 50 in a coupling manner; the sleeve radiator 60 is sleeved outside the coaxial line 20, and one end of the sleeve radiator 60 is electrically connected to the outer conductor 22. Preferably, the inner conductor 21 and the first radiator 40 are fixed by welding, and the outer conductor 22 and the ground 30 are fixed by welding.
In this embodiment, the first radiator 40 and the sleeve radiator 60 form a 900MHz radiation unit, and the first radiator 40 and the second radiator 50 form a 2.45GHz radiation unit, that is, the dual-band antenna 100 can simultaneously cover two dual-bands of 900MHz and 2.45 GHz; the first radiator 40 is electrically connected with the inner conductor 21 of the coaxial line 20, the second radiator 50 is electrically connected with the outer conductor of the coaxial line 20 through the grounding part 30, and the first radiator 40 and the second radiator 50 are coupled and fed, so that the first radiator 40 and the second radiator 50 are not required to be fed by the two coaxial lines 20 respectively, the structure of the antenna is effectively simplified, and the welding points of the first radiator 40 and the second radiator 50 are reduced and the welding process is reduced because the two coaxial lines 20 are not required to be fed by the first radiator 40 and the second radiator 50 respectively, and meanwhile, the stability of the product is improved because the welding points are reduced; in addition, since the first radiator 40 is shared by the two dual bands of 900MHz and 2.45GHz, the size of the dual band antenna 100 is effectively reduced.
Preferably, the sleeve radiator 60 is a copper tube. The sleeve radiator 60 may be a cylinder having a circular cross-sectional profile or a cylinder having a triangular cross-sectional profile or an oval cross-sectional profile or a cylinder having a polygonal cross-sectional profile or a cylinder having an irregular cross-sectional profile, preferably a cylinder having a circular cross-sectional profile.
In other embodiments, the first radiator 40 includes a first microstrip line 41 and a first oscillator arm 42, and one end of the first microstrip line 41 is connected to the first oscillator arm 42, and the other end is connected to the inner conductor 21. The width of the first oscillator arm 42 is larger than the width of the microstrip line 41. Preferably, the projection profile of the first vibrator arm 42 in the direction perpendicular to the first surface 11 is rectangular.
In other embodiments, the first radiator 40 further includes a second microstrip line 43, one end of the second microstrip line 43 is connected to the first oscillator arm 42, and the other end is connected to the first microstrip line 41, and the second microstrip line 43 extends from the first microstrip line 41 toward the first oscillator arm 42 in a manner of gradually widening the width. The projection profile of the second microstrip line 43 in the direction perpendicular to the first surface 11 is substantially triangular. The projection profile of the second microstrip line 43 in the direction perpendicular to the first surface 11 is substantially triangular, so that the bandwidth of the dual band antenna 100 in the 2.45GHz band can be obtained.
In other embodiments, two second radiators 50 are provided, and the two second radiators 50 are respectively provided on two sides of the first microstrip line 41. By providing two second radiators 50, the radiation performance of the dual band antenna 100 can be enhanced.
In other embodiments, each second radiator 50 includes a third microstrip line 51 and a second dipole arm 52, and one end of the third microstrip line 51 is connected to the ground 30, and the other end is connected to the second dipole arm 52. Preferably, the third microstrip line 51 includes a first extension portion 511 having one end connected to the ground 30 and a second extension portion 512 connected to one end of the first extension portion 511 away from the ground 30, the first extension portion 511 is parallel to the first microstrip line 41, and the second extension portion 512 is perpendicular to the first microstrip line 41. Preferably, the second vibrator arm 52 is parallel to the first microstrip line 41.
In other embodiments, the second oscillator arm 52 is disposed on a side of the third microstrip line 51 away from the first microstrip line 41. That is, the second extension portion 512 extends from one end of the first extension portion 511 away from the ground 30 to one side away from the first microstrip line 41. It is understood that the second oscillator arm 52 may also be disposed on a side of the third microstrip line 51 close to the first microstrip line 41, which may be determined according to actual design requirements.
The wavelength of the dual-band antenna 100 in the 2.45GHz band is defined as lambda1Defining the wavelength of the dual-band antenna 100 in the 900MHz band as λ2The length of the first radiator 40 (i.e. the distance between the two ends of the first radiator 40 in the length direction of the substrate 10) is defined as L1The length of the first vibrator arm 42 (the distance between the ends of the first vibrator arm 42 in the longitudinal direction of the substrate 10) is defined as L2The length of the second vibrator arm 52 (i.e., the distance between the ends of the second vibrator arm 52 in the longitudinal direction of the substrate 10) is defined as L3The distance L from the connection point of the sleeve radiator 60 and the outer conductor 22 to the connection point of the outer conductor 22 and the ground 30 is defined4Defining the axial length L of the sleeve radiator 605. Preferably, L1=(1/8~3/4)λ2(ii) a Preferably, L2=(1/8~3/4)λ1(ii) a Preferably, L3=(1/8~3/4)λ1(ii) a Preferably, L4+L5=(1/8~3/4)λ2
Referring to fig. 4-5, fig. 4 shows a radiation direction test result of the 900MHz frequency band of the dual-frequency antenna 100, fig. 5 shows a radiation direction test result of the 2.45GHz frequency band of the dual-frequency antenna, and as can be seen from fig. 4 and 5, the dual-frequency antenna 100 provided in this embodiment has a better omnidirectional radiation performance and a larger standing wave bandwidth in the 900MHz frequency band and the 2.45GHz frequency band.
Referring to fig. 1-2 and 6-11, an embodiment of the present invention further provides an unmanned aerial vehicle 800, where the unmanned aerial vehicle 800 includes a fuselage 200, a horn 300, a foot rest 400, a propeller mechanism 500, and the dual-band antenna 100, the fuselage 200 is disposed at one end of the horn 300 and connected to the horn 300, the foot rest 400 and the propeller mechanism 500 are disposed at the other end of the horn 300 and connected to the horn 300, a sleeve radiator 60 is installed in the horn 300, and a substrate 10 is installed in the foot rest 400.
In this embodiment, since the dual-band antenna 100 is adopted by the unmanned aerial vehicle 800, the unmanned aerial vehicle 800 can simultaneously cover two antenna frequency bands of 900MHz and 2.45 GHz; and two coaxial lines 20 are not needed to be arranged to feed the first radiator 40 and the second radiator 50 respectively, so that the structure of the antenna is effectively simplified, the welding points of the first radiator 40 and the second radiator 50 are reduced, the welding procedures are reduced, and meanwhile, the stability of the product is improved due to the reduction of the welding points. In addition, by installing the sleeve radiator 60 in the horn 300 and installing the substrate 10 in the foot rest 400, the unmanned aerial vehicle 800 realizes the built-in antenna, and makes full use of the space of the unmanned aerial vehicle 800, so that the whole unmanned aerial vehicle 800 has the advantages of small volume, delicate structure and low cost.
In other embodiments, the UAV 800 further comprises a fastener 600 disposed inside the horn 300 to compress the fixed sleeve radiator 60. It is to be understood that the unmanned aerial vehicle 800 is not limited to fixing the sleeve radiator 60 by providing the fixing member 600, and it is also possible to fix the sleeve radiator 60 by providing the horn 300 with a space just for accommodating the sleeve radiator 60 inside. Preferably, the fixing member 600 is made of a plastic material.
In other embodiments, the horn 300 includes an upper housing 301 and a lower housing 302 connected to the upper housing 301, and the fixing member 600 is snap-fit connected to the upper housing 301 and encloses with the lower housing 302 to form a first receiving cavity 303 for receiving the sleeve radiator 60.
In other embodiments, the upper housing 301 includes a top wall 3011 and two side walls 3012 respectively disposed on two opposite sides of the top wall 3011, each side wall 3012 is provided with a plurality of protruding bars 3013 arranged at intervals along the extending direction of the horn 300, two sides of the fixing member 600 are respectively provided with a plurality of first engaging grooves 601 corresponding to the protruding bars 3013 one by one, and the fixing member 601 is engaged with the lower housing 302 by the engaging of the protruding bars 3013 and the first engaging grooves 601.
In other embodiments, the unmanned aerial vehicle 800 further includes a wire 700 for supplying power to the propeller mechanism and transmitting signals, and the fixing member 600 and the upper housing 301 enclose a second receiving cavity 304 for receiving the wire 700. By arranging the fixing member 600 and the upper housing 301 to enclose the second accommodating cavity 304 for accommodating the wire 700, as can be seen from the above description of the embodiments, the sleeve radiator 60 is arranged in the first accommodating cavity 303 formed by enclosing the fixing member 600 and the lower housing 302, so that the sleeve radiator 60 is isolated from the wire 700, the radiation performance of the sleeve radiator 60 is prevented from being affected by the electrical signal transmitted in the wire 700 when the unmanned aerial vehicle 800 operates, and the antenna performance is ensured.
The distance between the conductive wire 700 and the sleeve radiator 60 is defined as L6Preferably, L6=5mm~λ2/8。
In other embodiments, the foot rest 400 includes a third receiving cavity 401 for receiving the substrate 10, two second slots 402 are disposed on an inner sidewall of the third receiving cavity 401, and two sides of the substrate 10 are respectively clamped in the two second slots 402. This arrangement allows the top base plate 10 to be firmly fixed in the foot stand 400.
In other embodiments, there are four of each of the horn 300 and the foot rest 400. Specifically, two arms 300 and two foot rests 400 respectively connected to the two arms 300 are disposed on both sides of the front end of the main body 200, and two arms 300 and two foot rests 400 respectively connected to the two arms 300 are also disposed on both sides of the rear end of the main body 200. Preferably, two dual band antennas 100 are provided, and the two dual band antennas 100 are respectively provided in the horn 300 and the foot stand 400 at both sides of the front end of the body 200. By providing two dual-band antennas 100, the unmanned aerial vehicle 800 can radiate a better antenna signal.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (13)

1. A dual-band antenna, comprising:
a substrate comprising a first surface;
a coaxial line including an inner conductor and an outer conductor insulated from the inner conductor;
the grounding piece is arranged on the first surface and is electrically connected with the outer conductor;
the first radiating body is arranged on the first surface and electrically connected with the inner conductor, and the first radiating body and the grounding piece are arranged at intervals;
the second radiator is arranged on the first surface and electrically connected with the grounding piece, and the first radiator and the second radiator are arranged at intervals so as to feed power to the second radiator in a coupling manner; and
and the sleeve radiating body is sleeved outside the coaxial line, and one end of the sleeve radiating body is electrically connected with the outer conductor.
2. The dual-band antenna of claim 1, wherein the first radiator comprises a first microstrip line and a first dipole arm, and one end of the first microstrip line is connected to the first dipole arm, and the other end of the first microstrip line is connected to the inner conductor.
3. The dual-band antenna according to claim 2, wherein the first radiator further includes a second microstrip line, one end of which is connected to the first dipole arm and the other end of which is connected to the first microstrip line, the second microstrip line extending from the first microstrip line toward the first dipole arm in a form of gradually widening a width thereof.
4. The dual-band antenna of claim 2, wherein there are two second radiators, and the two second radiators are respectively disposed on two sides of the first microstrip line.
5. The dual-band antenna of claim 4, wherein each of the second radiators comprises a third microstrip and a second dipole arm, and one end of the third microstrip is connected to the ground element, and the other end of the third microstrip is connected to the second dipole arm.
6. The dual-band antenna of claim 5, wherein the second dipole arm is disposed on a side of the third microstrip line away from the first microstrip line.
7. The dual-band antenna of claim 6, wherein the third microstrip line includes a first extension portion extending from the ground element toward the first dipole arm, and a second extension portion extending from an end of the first extension portion away from the ground element toward an end away from the first microstrip line, and the second dipole arm extends from an end of the second extension portion away from the first microstrip toward the ground element.
8. An unmanned aerial vehicle comprising a fuselage, a horn, a foot rest, a propeller mechanism and the dual-band antenna of any of claims 1-7, the fuselage being located at one end of the horn and connected to the horn, the foot rest and the propeller mechanism being located at the other end of the horn and connected to the horn, the sleeve radiator being mounted in the horn, the substrate being mounted in the foot rest.
9. The UAV of claim 8 further comprising a fastener disposed within the horn to compressively secure the sleeve radiator.
10. The UAV of claim 9, wherein the horn comprises an upper shell and a lower shell connected to the upper shell, and the fastener is snap-fit to the upper shell and encloses a first receiving cavity for receiving the sleeve radiator with the lower shell.
11. The unmanned aerial vehicle of claim 10, wherein the upper housing comprises a top wall and two side walls respectively disposed at two opposite sides of the top wall, each of the side walls is provided with a plurality of protruding strips spaced along an extending direction of the horn, two sides of the fixing member are respectively provided with a plurality of first engaging grooves corresponding to the protruding strips one by one, and the fixing member is engaged with the upper housing by engaging the protruding strips with the first engaging grooves.
12. The UAV of claim 10 further comprising a wire for powering and transmitting signals to the propeller mechanism, the fixture and the upper housing enclosing a second receptacle for receiving the wire.
13. The unmanned aerial vehicle of claim 8, wherein the foot rest comprises a third accommodating cavity for accommodating the substrate, two second clamping grooves are formed in the inner side wall of the third accommodating cavity and are arranged oppositely, and two sides of the substrate are clamped in the two second clamping grooves respectively.
CN201911007050.1A 2019-10-22 2019-10-22 Dual-frequency antenna and unmanned aerial vehicle Pending CN110808452A (en)

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Application Number Priority Date Filing Date Title
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CN201911007050.1A CN110808452A (en) 2019-10-22 2019-10-22 Dual-frequency antenna and unmanned aerial vehicle
PCT/CN2020/122905 WO2021078199A1 (en) 2019-10-22 2020-10-22 Dual-band antenna and unmanned aerial vehicle

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WO2021078260A1 (en) * 2019-10-25 2021-04-29 深圳市道通智能航空技术有限公司 Dual-band antenna and aerial vehicle

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CN110277631A (en) * 2019-06-14 2019-09-24 深圳市道通智能航空技术有限公司 A kind of dual-band antenna and aircraft
CN211126036U (en) * 2019-10-22 2020-07-28 深圳市道通智能航空技术有限公司 Dual-frequency antenna and unmanned aerial vehicle
CN110808452A (en) * 2019-10-22 2020-02-18 深圳市道通智能航空技术有限公司 Dual-frequency antenna and unmanned aerial vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020249087A1 (en) * 2019-06-14 2020-12-17 深圳市道通智能航空技术有限公司 Dual-band antenna and aircraft
WO2021078199A1 (en) * 2019-10-22 2021-04-29 深圳市道通智能航空技术有限公司 Dual-band antenna and unmanned aerial vehicle
WO2021078260A1 (en) * 2019-10-25 2021-04-29 深圳市道通智能航空技术有限公司 Dual-band antenna and aerial vehicle

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