CN208637583U - Antenna and unmanned vehicle - Google Patents
Antenna and unmanned vehicle Download PDFInfo
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- CN208637583U CN208637583U CN201821342468.9U CN201821342468U CN208637583U CN 208637583 U CN208637583 U CN 208637583U CN 201821342468 U CN201821342468 U CN 201821342468U CN 208637583 U CN208637583 U CN 208637583U
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- 239000002184 metal Substances 0.000 claims description 14
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- 230000000149 penetrating effect Effects 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
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Abstract
The utility model provides a kind of antenna and unmanned vehicle, the antenna and can be applicable on unmanned vehicle, and the antenna includes: substrate, and the substrate has opposite the first face and the second face；Radiating element, including the first irradiation unit and the second irradiation unit being electrically connected to each other, wherein the first irradiation unit is arranged on first face, the second irradiation unit is arranged on second face；Antenna ground unit, including the first antenna that is electrically connected to each other portion and the second antenna ground portion, wherein first antenna portion be arranged on first face, the second antenna portion be arranged on second face；Via hole, through the first antenna portion, substrate, the second antenna ground portion；Feeding coaxial lines, the feeding coaxial lines pass through the via hole and with first irradiation unit and second antenna portion is connect respectively, and the feeding coaxial lines are equipped with choke；Wherein, the radiating element and the antenna unit fed by the feeding coaxial lines.The utility model antenna performance is stablized.
Description
Technical Field
The utility model relates to an antenna technology field especially relates to an antenna and unmanned vehicles.
Background
With the progress of science and technology, unmanned aerial vehicles receive wide attention. Unmanned vehicles are abbreviated as: unmanned aerial vehicle, it has advantages such as flexible, the reaction is quick, unmanned aerial vehicle. Unmanned vehicles are generally used in military and civil fields, and are particularly widely used in the fields of meteorology, agriculture, exploration, photography, transportation, entertainment and the like. The unmanned aerial vehicle is provided with an antenna, and the antenna is used for receiving and transmitting signals and transmitting the signals with the remote controller.
However, the built-in antenna of current unmanned aerial vehicle generally sets up in the foot rest for the antenna size is limited, and the unmanned aerial vehicle horn space dimension is great relatively, but the environment is more complicated, influences the signal of antenna easily, makes the unable normal work of antenna, moreover, antenna performance is very unstable.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one problem mentioned in the background art, the utility model provides an antenna and unmanned vehicles to improve the stability of antenna.
In order to achieve the above object, in a first aspect, the present invention provides an antenna, which can be used in an unmanned aerial vehicle, the antenna comprising:
a substrate having first and second opposing faces;
a radiation unit including a first radiation part and a second radiation part electrically connected to each other, wherein the first radiation part is disposed on a first surface of the substrate, and the second radiation part is disposed on a second surface;
an antenna ground unit including a first antenna ground and a second antenna ground electrically connected to each other, wherein the first antenna ground is disposed on the first face and the second antenna ground is disposed on the second face;
a via hole penetrating the first antenna ground, the substrate, and the second antenna ground;
the feeding coaxial line penetrates through the through hole and is respectively connected with the first radiating part and the second antenna ground part, and a choke piece is arranged on the feeding coaxial line;
wherein the radiating element and the antenna ground element are fed through the feeding coaxial line.
The antenna of the utility model, through setting up the second antenna ground, make the influence that the internal cables such as the coaxial line of the internal motor line of unmanned aerial vehicle, lamp plate line and other antennas produced the antenna less, thus make the said antenna can work normally under the complicated electromagnetic environment, namely the antenna can be set up in the relatively large, complicated horn of environment of space, need not restrict to set up in the foot rest that the space is smaller; in addition, the first face and the second face of base plate all have the radiation portion, promptly, the both sides of base plate all produce the radiation to improved the radiation efficiency of antenna greatly, be equipped with the choke on the feed coaxial line moreover, can effectively control the electric current on the feed coaxial line, make the antenna performance more stable.
In one embodiment, the first radiating portion and the second radiating portion have the same outer contour, and the first antenna ground portion and the second antenna ground portion have the same outer contour.
In one embodiment, the antenna further comprises:
the first through hole is used for penetrating through the first radiation part, the substrate and the second radiation part, and the first radiation part and the second radiation part are connected through a metal piece arranged in the first through hole;
and the second through hole is used for penetrating through the first antenna ground part, the substrate and the second antenna ground part, and the first antenna ground part and the second antenna ground part are connected through a metal piece arranged in the second through hole.
Through seting up first through-hole and second through-hole, link together first radiation portion and second radiation portion, first antenna ground portion and second antenna ground portion respectively, connect through the mode that the through-hole meets, connect convenient, reliable, and guaranteed the pleasing to the eye degree of antenna.
In one embodiment, the feeding coaxial line comprises an outer conductor and an inner conductor;
the first end of the feeding coaxial line is positioned on the first surface of the substrate, and the inner conductor extends from the first end to the first radiation part and is electrically connected with the first radiation part;
and the second end of the feed coaxial line passes through the through hole to reach the second surface of the substrate, and the outer conductor of the feed coaxial line is tightly attached to the ground part of the second antenna.
In one embodiment, the first radiating part and the second radiating part each comprise a microstrip feed line, an antenna dipole arm and a ground return line;
the first end of the microstrip feeder line is connected with the feed end of the feed coaxial line, and the second end of the microstrip feeder line is connected with the antenna oscillator arm;
the ground return wire is respectively connected with the antenna oscillator arm and the antenna ground unit.
In one embodiment, the antenna return ground line and the microstrip feed line are parallel to each other;
the antenna oscillator arm is perpendicular to the ground return line and the microstrip feeder line respectively; or,
the antenna return ground wire and the microstrip feeder line form a U shape, and the antenna oscillator arm is perpendicular to the microstrip feeder line.
In one embodiment, the antenna dipole arm is arranged at the edge of the substrate along the length direction of the substrate.
In one embodiment, the first antenna ground part and the second antenna ground part are arranged on the substrate along the length direction of the substrate, and the projection area of the second antenna ground part on the substrate is larger than or equal to the projection area of a motor line and a lamp panel line in an arm of an unmanned aerial vehicle on the substrate.
In one embodiment, the substrate is a substrate made of FR-4 grade material.
In one embodiment, the operating frequency of the antenna is 900 MHz.
In one embodiment, the first radiating portion and the second radiating portion are integrally formed;
the first antenna ground part and the second antenna ground part are integrally formed.
In one embodiment, the choke is a copper tube, a metal mesh tube, a copper sheet or a conductive tape.
In a second aspect, the present invention provides an unmanned aerial vehicle, including the fuselage, with horn and the aforesaid antenna that the fuselage is connected, wherein the antenna setting is in the horn.
The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a first surface of an antenna according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second surface of an antenna according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of an antenna installed in a horn according to a first embodiment of the present invention;
fig. 4 is a standing wave parameter diagram of an antenna according to a first embodiment of the present invention;
fig. 5 is a directional diagram of an antenna on a horizontal plane and a vertical plane according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an airframe of an unmanned aerial vehicle according to an embodiment of the present invention.
Description of reference numerals:
10-an antenna; 101-a substrate; 102. 105-a microstrip feed line; 103. 106-antenna dipole arm; 104. 107-antenna return ground; 108 — first antenna ground; 109 — second antenna ground; 110-feeding coaxial line; 111 — a first via; 112 — a second via; 113-a via; 114-a choke; 20-unmanned aerial vehicle; 121-fuselage; 120. 122 — a horn; 123-motor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms "left", "right", "vertical", "horizontal", and the like refer to the orientation or positional relationship shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to any number of technical features indicated. Thus, features defined as "first," "second," "third," "fourth," etc. may explicitly or implicitly include one or more of the features.
In the description of the present invention, it should be noted that unless otherwise explicitly stated 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 meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The antenna and the unmanned aerial vehicle using the antenna of the present invention are described in detail below with reference to specific embodiments.
Example one
Fig. 1 is a schematic structural diagram of a first surface of an antenna according to an embodiment of the present invention. Fig. 2 is a schematic structural diagram of a second surface of an antenna according to an embodiment of the present invention. Fig. 3 is a schematic perspective view of the antenna installed in the horn according to an embodiment of the present invention. Referring to fig. 1 to 3, the present invention provides an antenna, which can be used in an unmanned aerial vehicle, the antenna 10 includes: the antenna includes a substrate 101, a radiating element, an antenna ground element, a feeding coaxial line 110, a first through hole 111, a second through hole 112, a via hole 113, and a choke 114.
The substrate 101 has opposite first and second faces. The substrate 101 is made of FR-4 grade material. The substrate 101 may be a Printed Circuit Board (PCB), that is, the antenna 10 of the present embodiment may be a PCB antenna. Specifically, the radiation unit and the antenna ground unit may be made of metal (e.g., copper sheet) on the substrate 101.
The radiating unit comprises a first radiating part and a second radiating part which are electrically connected with each other, wherein the first radiating part is arranged on the first surface of the substrate 101 and comprises a microstrip feeder line 102, an antenna oscillator arm 103 and an antenna return ground line 104. The second radiating portion is disposed on the second side of the substrate 101 and also includes a microstrip feed line 105, an antenna dipole arm 106, and an antenna ground return line 107.
The antenna ground unit includes a first antenna ground 108 and a second antenna ground 109 electrically connected to each other, the first antenna ground 108 being disposed on the first surface of the substrate 101, and the second antenna ground 109 being disposed on the second surface of the substrate 101.
In one embodiment, the radiating element and the antenna ground element are both disposed along the edge of the substrate 101, which may better ensure the current flow.
Specifically, a first end of the microstrip feed line 102 is connected to a feed end of the feed coaxial line 110, a second end of the microstrip feed line 102 is connected to the antenna dipole arm 103, and the antenna return ground line 104 is connected to the antenna dipole arm 103 and the first antenna ground portion 108, respectively. The first antenna ground 108 is also connected to the ground of the feeding coaxial line 110.
In one embodiment, microstrip feed line 102 is parallel to antenna return line 104, and antenna dipole arm 103 is perpendicular to antenna return line 104 and microstrip feed line 102, respectively; or, in another embodiment, microstrip feed line 102 and antenna return line 104 form a U-shape, and antenna dipole arm 103 is perpendicular to microstrip feed line 102.
In one embodiment, antenna dipole arm 103 is disposed at an edge of substrate 101 along a length of substrate 101.
The via 113 penetrates the first antenna ground 108, the substrate 101 and the second antenna ground 109, the size of the via 113 being sufficient for the feed coaxial line 110 to pass through.
The first end of the feeding coaxial line 110 is located on the first side of the substrate 101, the second end of the feeding coaxial line 110 passes through the via 113 from the first side of the substrate 101 to the second side of the substrate 101, and the radiating element and the antenna ground element are fed through the feeding coaxial line 110. It is understood that in other embodiments, the first end of the feeding coaxial line may also pass through the via 113 from the second side of the substrate 101 to the first side of the substrate 101. Here, there is no limitation on the sequential process of passing the feeding coaxial line 110 through the substrate 101.
The feeding coaxial line 110 has an outer conductor, an inner conductor and an insulating medium layer between the outer conductor and the inner conductor, wherein the inner conductor extends out from the first end of the feeding coaxial line 110 as a feeding end to be connected with the first radiating part, and the outer conductor of the feeding coaxial line 110 is tightly attached to the second antenna ground 109 as a grounding end. In one embodiment, the feeding end of the feeding coaxial line 110 is located on the first side of the substrate 101, and the grounding end of the feeding coaxial line 110 is located on the second side of the substrate 101.
On the second surface of the substrate 101, a first end of the microstrip feed line 105 is connected to the feed end of the feed coaxial line 110 through the first through hole 111, a second end of the microstrip feed line 105 is connected to the antenna dipole arm 106, and the antenna ground return line 107 is connected to the antenna dipole arm 106 and the second antenna ground 109, respectively. The arrangement and structure of the second radiation part on the second surface of the substrate 101 may refer to the arrangement and structure of the first radiation part on the first surface of the substrate 101, which is not described herein again.
The feeding coaxial line 110 is provided with a choke 114 for wrapping the feeding coaxial line 110 and various lines such as a motor line and a lamp board line passing through the second surface of the substrate 101 together and closely adhering to the second antenna ground 109. In one embodiment, the choke 114 is a conductive tape. It is understood that in other embodiments, the choke 114 can be other wrappable metal materials such as copper tube, metal mesh tube or copper sheet, which are not limited strictly herein.
The choke 114 can be used to choke the current on the feeding coaxial line, so as to prevent the antenna pattern from being distorted, so that the energy radiated from the antenna is not affected by the folding of the feeding coaxial line, and the antenna pattern is more stable.
The second through hole 112 is used to penetrate the first antenna ground 108, the substrate 101, and the second antenna ground 109, and the first antenna ground 108 and the second antenna ground 109 are connected by a metal member disposed in the second through hole 112.
In one embodiment, the first antenna ground 108 and the second antenna ground 109 are disposed on the first surface and the second surface of the substrate 101 along the length direction of the substrate 101, and the projection area of the first antenna ground 108 and the second antenna ground 109 on the substrate 101 is greater than or equal to the projection area of the motor line and the lamp panel line in the arm of the unmanned aerial vehicle on the substrate 101. It can be understood that, in other embodiments, as long as it is ensured that the projection area of the second antenna ground portion 109 on the substrate 101 is greater than or equal to the projection area of the motor wire and the lamp wire in the horn of the unmanned aerial vehicle on the substrate 101, the area of the first antenna ground portion 108 may be slightly smaller or irrelevant.
In addition, the embodiment shown in the figure, the motor line and the lamp panel line in the second antenna ground portion 109, the arm of the unmanned aerial vehicle are all located at the lower edge of the substrate 101, and it can be understood that, in other embodiments, the positions of the motor line and the lamp panel line in the second antenna ground portion 109, the arm of the unmanned aerial vehicle on the substrate 101 can be changed according to the specific structure setting of the antenna 10, if the motor line and the lamp panel line can be located at the upper edge or the middle of the substrate 101, and the like, as long as the motor line and the lamp panel line in the arm of the unmanned aerial vehicle and the second antenna ground portion 109 can be ensured to be superposed in a projection manner.
In one embodiment, the first and second radiating portions have the same outer contour, and the first and second antenna ground portions 108 and 109 have the same outer contour. The consistency of the lengths of the current paths on the front side and the back side of the antenna is further ensured, so that the electromagnetic waves on the two sides of the antenna can resonate at the same resonant frequency, the performance of the antenna is more stable, and the antenna is convenient to manufacture.
In one embodiment, the operating frequency of the antenna 10 is 900 MHz. It is understood that in other embodiments, the antenna 10 may also operate in other frequency bands, which is not strictly limited herein.
In one embodiment, the length of the first antenna ground 108 along the substrate 101 is less than the length of the feed coaxial line 110.
The antenna 10 of the present embodiment may be specifically applied to an unmanned aerial vehicle, and it can be understood that the body of the unmanned aerial vehicle is used in cooperation with a remote controller, and the antenna 10 is used to receive and transmit signals, so as to implement communication between the body of the unmanned aerial vehicle and the remote controller. The antenna 10 may be applied to other devices requiring transmission and reception of signals.
According to the antenna 10 provided by the embodiment, by arranging the second antenna ground part, the influence of internal cables such as a motor wire, a lamp panel wire and a coaxial wire of other antennas in the unmanned aerial vehicle on the antenna is small, so that the antenna can normally work in a complex electromagnetic environment, namely the antenna can be arranged in a horn with a relatively large space and a relatively complex environment and is not limited to be arranged in a foot stool with a small space; in addition, the first surface and the second surface of the substrate are provided with radiation parts, namely, the two sides of the substrate generate radiation, so that the radiation efficiency of the antenna is greatly improved, and the choke piece is arranged on the feed coaxial line, so that the current on the feed coaxial line can be effectively controlled, and the performance of the antenna is more stable.
The first end of the feeding coaxial line 110 may be located at one side of the first surface of the substrate 101, the second end of the feeding coaxial line 110 passes through the via 113 to reach the second surface of the substrate 101, and the outer conductor of the feeding coaxial line 110 is closely attached to one side of the second antenna ground 109 and electrically connected to the second antenna ground 109. The inner conductor of the feed coaxial line 110 extends from its first end to the radiating element and is electrically connected to the microstrip feed line 102 of the radiating element, so that the radiating element and the antenna ground element are fed through the feed coaxial line 110.
Illustratively, as shown in fig. 1 and 2, the first antenna ground portion 108 is disposed on one side of the first surface of the substrate 101, and the first radiation portion is disposed on the other side of the first surface of the substrate 101. The second antenna ground 109 is provided on the second surface of the substrate 101 at a position almost overlapping the first antenna ground 108, and the second radiation portion is provided on the second surface of the substrate 101 at a position almost overlapping the first radiation portion.
In particular implementation, referring to fig. 1 to 3, a first pad may be disposed at an end of the second antenna ground portion 109 close to the microstrip feed line 105, and the second antenna ground portion 109 is welded to the outer conductor of the feed coaxial line 110 through the first pad; the end of the microstrip feed line 102 close to the first antenna ground 108 may also be provided with a second pad through which the microstrip feed line 102 is soldered with the inner conductor of the feed coaxial line 110. It is understood that in other embodiments, the bonding pad may not be used, and the point connection may be directly made at the connection between the second antenna portion 109 and the feeding coaxial line 110, or at the connection between the microstrip feeding line 102 and the feeding coaxial line 110, which is not strictly limited herein.
Referring to fig. 1 and 2, in the present embodiment, the antenna 10 further includes a first through hole 111 penetrating the first radiation portion, the substrate 101, and the second radiation portion, and the first radiation portion and the second radiation portion are connected by a metal member disposed in the first through hole 111. That is, the first radiation portion and the second radiation portion are connected by a through hole.
In this embodiment, the antenna 10 further has a second through hole 112 penetrating through the first antenna ground 108, the substrate 101, and the second antenna ground 109, and the first antenna ground 108 and the second antenna ground 109 are connected by a metal member disposed in the second through hole 112. That is, the first antenna ground 108 and the second antenna ground 109 are connected to each other through a through hole.
In a specific implementation, after the first through hole 111 and the second through hole 112 are opened, metal is respectively melted in the first through hole 111 and the second through hole 112, and after the melted metal is solidified and cooled, the first radiating portion and the second radiating portion are electrically connected together, and the first antenna ground portion 108 and the second antenna ground portion 109 are electrically connected together. Of course, the metal member may also be a wire or a wire that is inserted into the first through hole 111 and the second through hole 112.
In a specific implementation, the first through hole 111 may be multiple, for example, multiple first through holes 111 may be distributed at each edge position of the first radiation portion and the second radiation portion. The second through hole 112 may be multiple, for example, the second through holes 112 may be arranged along the edges of the first antenna ground 108 and the second antenna ground 109 on the side close to the radiating element. Since the path of the current on the front and back sides of the antenna 10 runs along the edges of the radiating element and the antenna ground element when the antenna 10 operates, the first through holes 111 are arranged along the edges of the radiating element, and the second through holes 112 are arranged along the edges of the antenna ground element, so that the running direction of the current is ensured.
As to the number of the first through holes 111 and the second through holes 112, the present invention is not limited as long as at least the first through holes 111 having a sufficient number are ensured near the feeding end of the feeding coaxial line 110, and the second through holes 112 having a sufficient number are ensured near the grounding end of the feeding coaxial line 110 (near the position where the feeding coaxial line is disposed in fig. 3).
In one embodiment, the outer contours of the first radiation portion and the second radiation portion may be the same, and the outer contours of the first antenna ground portion 108 and the second antenna ground portion 109 are the same, that is, it is ensured that the electromagnetic waves of the first surface and the second surface of the antenna 10 can resonate at the same resonant frequency, so that the performance of the antenna 10 is more stable, and the antenna is convenient to manufacture. It is to be understood that, in other embodiments, the outer contours of the first radiation portion and the second radiation portion may not completely coincide, and the outer contours of the first antenna ground portion 108 and the second antenna ground portion 109 may not completely coincide and may be substantially the same. Because the same is true, i.e., the current path lengths of the first and second surfaces of the substrate 101 are also substantially uniform.
In one embodiment, the first radiating portion and the second radiating portion may be integrally formed, and the first antenna ground portion 108 and the second antenna ground portion 109 may be integrally formed, so that the manufacturing is more convenient and the connection therebetween is more reliable. Of course, in other embodiments, each of the corresponding portions may be electrically reconnected together subsequently.
Fig. 4 is a parameter diagram of a standing wave of an antenna according to a first embodiment of the present invention, as shown in fig. 4, the antenna 10 of this embodiment can work at 897 MHz-935 MHz, has a bandwidth of 38MHz, and can meet the coverage of a commonly used 900MHz frequency band. Fig. 5 is a directional diagram of an antenna on a horizontal plane and a vertical plane according to an embodiment of the present invention. Referring to fig. 5, the antenna 10 of this embodiment can still maintain omni-directional in the horizontal direction (H-plane) and large gain in the vertical direction (E-plane) at 900MHz, that is, the antenna 10 can achieve omni-directional coverage at 900 MHz.
The antenna 10 of the present embodiment is specifically formed as an inverted F antenna. Of course, in other implementations, there may be a monopole antenna, a dipole antenna, etc., and this is not strictly limited herein.
As shown in fig. 3, when the antenna 10 is applied to an unmanned aerial vehicle, the antenna 10 is specifically installed in a horn 120 of the unmanned aerial vehicle, the horn 120 has a radio frequency board therein, the radio frequency board has a radio frequency interface thereon, and an end of the feed coaxial line 110 away from a feed end thereof is connected to the radio frequency interface, so as to implement signal transmission between a body of the unmanned aerial vehicle and a remote controller.
Example two
Fig. 6 is a schematic structural diagram of an unmanned aerial vehicle according to an embodiment of the present invention. Referring to fig. 1 to 5, the present embodiment provides an unmanned aerial vehicle 20, configured to communicate with a control terminal such as a remote controller, so as to send information such as flight speed, altitude, and position of the unmanned aerial vehicle 20, and obtain a control instruction of the remote controller to control takeoff, flight attitude, direction, landing, and the like of the unmanned aerial vehicle.
Wherein, unmanned vehicles 20 includes fuselage 121, is connected with horn 122 on the fuselage 121, and the tip of horn 122 can set up power device, and power device specifically can include: a rotor (not shown) and a motor 123, wherein the motor 123 is used for driving the rotor to rotate so as to provide power for the flight of the unmanned aerial vehicle. The horn 122 internally mounts the antenna provided in the first embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (13)
1. An antenna for use on an unmanned aerial vehicle, the antenna comprising:
a substrate having first and second opposing faces;
a radiation unit including a first radiation part and a second radiation part electrically connected to each other, wherein the first radiation part is disposed on a first surface of the substrate, and the second radiation part is disposed on a second surface;
an antenna ground unit including a first antenna ground and a second antenna ground electrically connected to each other, wherein the first antenna ground is disposed on the first face and the second antenna ground is disposed on the second face;
a via hole penetrating the first antenna ground, the substrate, and the second antenna ground;
the feeding coaxial line penetrates through the through hole and is respectively connected with the first radiating part and the second antenna ground part, and a choke piece is arranged on the feeding coaxial line;
wherein the radiating element and the antenna ground element are fed through the feeding coaxial line.
2. The antenna of claim 1, wherein the first radiating portion and the second radiating portion have the same outer contour, and the first antenna ground portion and the second antenna ground portion have the same outer contour.
3. The antenna of claim 1, further comprising:
the first through hole is used for penetrating through the first radiation part, the substrate and the second radiation part, and the first radiation part and the second radiation part are connected through a metal piece arranged in the first through hole;
and the second through hole is used for penetrating through the first antenna ground part, the substrate and the second antenna ground part, and the first antenna ground part and the second antenna ground part are connected through a metal piece arranged in the second through hole.
4. The antenna of claim 1, wherein the feed coaxial line comprises an outer conductor and an inner conductor;
the first end of the feeding coaxial line is positioned on the first surface of the substrate, and the inner conductor extends from the first end to the first radiation part and is electrically connected with the first radiation part;
and the second end of the feed coaxial line passes through the through hole to reach the second surface of the substrate, and the outer conductor of the feed coaxial line is tightly attached to the ground part of the second antenna.
5. The antenna of claim 1, wherein the first and second radiating portions each comprise a microstrip feed, an antenna dipole arm, and a ground return;
the first end of the microstrip feeder line is connected with the feed end of the feed coaxial line, and the second end of the microstrip feeder line is connected with the antenna oscillator arm;
the ground return wire is respectively connected with the antenna oscillator arm and the antenna ground unit.
6. The antenna of claim 5, wherein the antenna return ground and the microstrip feed line are parallel to each other;
the antenna oscillator arm is perpendicular to the ground return line and the microstrip feeder line respectively; or,
the antenna return ground wire and the microstrip feeder line form a U shape, and the antenna oscillator arm is perpendicular to the microstrip feeder line.
7. The antenna of claim 5, wherein the antenna dipole arm is disposed at an edge of the substrate along a length of the substrate.
8. The antenna of claim 1, wherein the first antenna ground portion and the second antenna ground portion are disposed on the substrate along a length direction of the substrate, and a projection area of the second antenna ground portion on the substrate is greater than or equal to a projection area of a motor line and a lamp panel line in an arm of the unmanned aerial vehicle on the substrate.
9. The antenna of claim 1, wherein the substrate is a substrate made of FR-4 grade material.
10. The antenna of claim 1, wherein the antenna operates at a frequency of 900 MHz.
11. The antenna of claim 1, wherein the first radiating portion and the second radiating portion are integrally formed;
the first antenna ground part and the second antenna ground part are integrally formed.
12. An antenna according to any of claims 1 to 11, wherein the choke is a copper tube, a metal mesh tube, a copper sheet or a conductive tape.
13. An unmanned aerial vehicle comprising a fuselage, an arm connected to the fuselage, and an antenna according to any one of claims 1 to 12;
wherein the antenna is disposed within the horn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821342468.9U CN208637583U (en) | 2018-08-20 | 2018-08-20 | Antenna and unmanned vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821342468.9U CN208637583U (en) | 2018-08-20 | 2018-08-20 | Antenna and unmanned vehicle |
Publications (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020038369A1 (en) * | 2018-08-20 | 2020-02-27 | 深圳市道通智能航空技术有限公司 | Antenna and unmanned aerial vehicle |
| WO2020038287A1 (en) * | 2018-08-20 | 2020-02-27 | 深圳市道通智能航空技术有限公司 | Antenna and unmanned aerial vehicle |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020038369A1 (en) * | 2018-08-20 | 2020-02-27 | 深圳市道通智能航空技术有限公司 | Antenna and unmanned aerial vehicle |
| WO2020038287A1 (en) * | 2018-08-20 | 2020-02-27 | 深圳市道通智能航空技术有限公司 | Antenna and unmanned aerial vehicle |
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Address after: 518055 Shenzhen, Guangdong, Nanshan District Xili street, No. 1001, Zhiyuan Road, B1 9. Patentee after: Shenzhen daotong intelligent Aviation Technology Co.,Ltd. Address before: 518055 Shenzhen, Guangdong, Nanshan District Xili street, No. 1001, Zhiyuan Road, B1 9. Patentee before: AUTEL ROBOTICS Co.,Ltd. |
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