CN108767435B - Antenna and unmanned aerial vehicle - Google Patents
Antenna and unmanned aerial vehicle Download PDFInfo
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- CN108767435B CN108767435B CN201810949817.1A CN201810949817A CN108767435B CN 108767435 B CN108767435 B CN 108767435B CN 201810949817 A CN201810949817 A CN 201810949817A CN 108767435 B CN108767435 B CN 108767435B
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- 239000000758 substrate Substances 0.000 claims abstract description 84
- 230000005855 radiation Effects 0.000 claims description 52
- 239000004020 conductor Substances 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/02—Gyroplanes
- B64C27/028—Other constructional elements; Rotor balancing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/285—Aircraft wire antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Aerials (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention provides an antenna and an unmanned aerial vehicle, wherein the antenna can be applied to the unmanned aerial vehicle, and comprises the following components: a substrate having first and second opposite sides; 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 one side edge of the first surface, and the second radiating part is arranged on one side edge of the 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 other side edge of the first face, and the second antenna ground is disposed on the other side edge of the second face; a feeding coaxial line; the radiating unit and the antenna ground unit are fed through the feeding coaxial line, the current path lengths of the first radiating part and the second radiating part are the same, and the current path lengths of the first antenna ground part and the second antenna ground part are the same. The antenna has stable performance.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to an antenna and an unmanned aerial vehicle.
Background
With the advancement of technology, unmanned aerial vehicles have received a great deal of attention. Unmanned aerial vehicle is abbreviated as: unmanned aerial vehicle, it has advantages such as flexible, the reaction is quick, unmanned aerial vehicle. Unmanned aerial vehicles are commonly applied to the military field and the civil field, and are particularly widely applied to the fields of weather, agriculture, exploration, photography, transportation, entertainment and the like. The unmanned aerial vehicle is provided with an antenna, and signals are transmitted and received through the antenna and are transmitted with the remote controller.
However, the existing built-in antenna of the unmanned aerial vehicle is generally arranged in a foot rest, so that the size of the antenna is limited, the size of a horn of the unmanned aerial vehicle is relatively large, but the environment is complex, signals of the antenna are easy to influence, the antenna cannot work normally, and moreover, the two sides of the substrate do not generate radiation at the same time and the substrate itself has loss to the radiation, so that the performance of the antenna is unstable.
Disclosure of Invention
In order to solve at least one of the problems mentioned in the background art, the present invention provides an antenna and an unmanned aerial vehicle, so as to improve the stability of the antenna.
In order to achieve the above object, in a first aspect, the present invention provides an antenna applicable to an unmanned aerial vehicle, the antenna comprising:
a substrate having first and second opposite sides;
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 side edge of a first face of the substrate, and the second radiation part is disposed on a side edge of the second face;
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 other side edge of the first face, and the second antenna ground is disposed on the other side edge of the second face;
a feeding coaxial line;
the radiating unit and the antenna ground unit are fed through the feeding coaxial line, the current path lengths of the first radiating part and the second radiating part are the same, and the current path lengths of the first antenna ground part and the second antenna ground part are the same.
According to the antenna, the second antenna ground part is arranged, so that the influence of motor wires, lamp panel wires, coaxial wires of other antennas and other internal cables in the unmanned aerial vehicle on the antenna is small, and the antenna can normally work in a complex electromagnetic environment, namely, the antenna can be arranged in a horn with relatively large space and complex environment without being limited in a foot rest with smaller space; in addition, the first surface and the second surface of the substrate are both provided with radiation parts and are arranged on the edge of the substrate, namely, radiation is generated on both sides of the substrate, and the current path is also along the edge of the substrate, so that the radiation efficiency of the antenna is greatly improved, the current trend is better ensured, and even if the thicknesses of different positions of the substrate are inconsistent in the production process, the radiation parts and the antenna ground parts with the same current path length exist on both surfaces of the substrate of the antenna, which is equivalent to the existence of metals on both surfaces of the substrate, and meanwhile, the resonance of electromagnetic waves of the two antenna substrates which do not return home at the same resonance frequency is ensured, so that the resonance frequency of the antenna is not deviated, thereby reducing the radiation loss of the substrate and improving the radiation efficiency and the performance of the antenna.
In one embodiment, the antenna further comprises:
the first through hole is used for penetrating 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 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 radiating part and second radiating part, first antenna ground part and second antenna ground part 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 feed coaxial line comprises an outer conductor and an inner conductor;
the feeding coaxial line is positioned on the first surface of the substrate, the outer conductor of the feeding coaxial line is clung to the first antenna ground part, and the inner conductor of the feeding coaxial line extends to the first radiation part to be electrically connected with the first radiation part.
In one embodiment, the first radiation part and the second radiation part each comprise a microstrip feeder, an antenna element arm and a ground return wire;
the first end of the microstrip feeder is connected with the feed end of the feed coaxial line, and the second end of the microstrip feeder is connected with the antenna element arm;
and the return ground wire is respectively connected with the antenna element arm and the antenna ground unit.
In one embodiment, the antenna return line and the microstrip feed line are parallel to each other;
the antenna oscillator arm is perpendicular to the ground return wire and the microstrip feeder line respectively; or,
the antenna return ground wire and the microstrip feeder line form a U shape, and the antenna element arm is perpendicular to the microstrip feeder line.
In one embodiment, the antenna element arm is disposed at an edge of the substrate along a length direction of the substrate.
In one embodiment, the first antenna ground part and the second antenna ground part are disposed on the substrate along the length direction of the substrate, and the projection area of the second antenna ground part on the substrate 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.
In one embodiment, the substrate is a substrate made of FR-4 grade material.
In one embodiment, the antenna has an operating frequency of 900MHz.
In one embodiment, the length of the first antenna ground along the substrate is less than the length of the feed coaxial line.
In one embodiment, the first radiating portion and the second radiating portion are integrally formed;
the first antenna ground and the second antenna ground are integrally formed.
In one embodiment, the first radiating portion and the second radiating portion have the same outer profile, and the first antenna ground portion and the second antenna ground portion have the same outer profile.
In a second aspect, the invention provides an unmanned aerial vehicle, which comprises a fuselage, a horn connected with the fuselage and the antenna, wherein the antenna is arranged in the horn.
The construction of the invention, together with other objects and advantages thereof, will be best understood from the following description of the preferred embodiments when read in connection with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic structural diagram of a first surface of an antenna according to a first 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 according to a first embodiment of the present invention installed in a horn;
FIG. 4 is a chart showing standing wave parameters of an antenna according to a first embodiment of the present invention;
fig. 5 is a diagram of an antenna according to a first embodiment of the present invention in a horizontal plane and a vertical plane;
fig. 6 is a schematic structural diagram of a body of an unmanned aerial vehicle according to a second embodiment of the present invention.
Reference numerals illustrate:
10-an antenna; 101-a substrate; 102. 105-microstrip feed line; 103. 106-an antenna element arm; 104. 107—antenna return ground; 108-a first antenna ground; 109-a second antenna ground; 110-feeding coaxial line; 111-a first through hole; 112-a second through hole; 20-unmanned aerial vehicle; 121-a fuselage; 120. 122-arm; 123-motor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the invention, it should be understood that the terms "left," "right," "vertical," "transverse," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the 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 a relative importance or implying a number of technical features being indicated. Thus, a feature defining "first," "second," "third," "fourth," etc. may explicitly or implicitly include one or more such feature.
In the description of the invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication 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 in a specific case.
The antenna of the present invention and the unmanned aerial vehicle using the same will be described in detail with reference to specific examples.
Example 1
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 according to an embodiment of the invention installed in a horn. Referring to fig. 1 to 3, the present invention provides an antenna applicable to an unmanned aerial vehicle, the antenna 10 comprising: a substrate 101, a radiating element, an antenna ground element, a feeding coaxial line 110, a first through hole 111 and a second through hole 112.
The substrate 101 has opposite first and second sides. The substrate 101 is made of FR-4 class material. The substrate 101 may be a printed circuit board (Printed Circuit Board, abbreviated as PCB), that is, the antenna 10 of the present embodiment may be a PCB antenna. In particular, the radiating element, the antenna ground element may be made of a metal (e.g. copper sheet) located 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 one side edge of the first surface of the substrate 101 and comprises a microstrip feeder 102, an antenna element arm 103 and an antenna return ground wire 104. The second radiation part is arranged on one side edge of the second surface of the substrate 101, and also comprises a microstrip feed line 105, an antenna element arm 106 and an antenna return wire 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 other side edge of the first face of the substrate 101, and the second antenna ground 109 being disposed on the other side edge of the second face of the substrate 101.
Both the radiating element and the antenna ground element are arranged along the edge of the substrate 101, which better ensures the current flow.
Specifically, a first end of the microstrip feeder 102 is connected to a feeding end of the feeding coaxial line 110, a second end of the microstrip feeder 102 is connected to the antenna element arm 103, and the antenna return wire 104 is connected to the antenna element arm 103 and the first antenna ground 108, respectively. The first antenna ground 108 is also connected to the ground of the feeding coaxial line 110.
In one embodiment, the microstrip feed line 102 is parallel to the antenna return line 104, and the antenna element arm 103 is perpendicular to the antenna return line 104 and the microstrip feed line 102, respectively; alternatively, in another embodiment, the microstrip feed line 102 and the antenna return line 104 form a U-shape, and the antenna element arm 103 is perpendicular to the microstrip feed line 102.
In one embodiment, the antenna element arm 103 is disposed at an edge of the substrate 101 along a length direction of the substrate 101.
The feeding coaxial line 110 is in close proximity to the first antenna ground 108, and the radiating element and the antenna ground element are fed through the feeding coaxial line 110. 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 of the feeding coaxial line 110 protrudes as its feeding end and the outer conductor of the feeding coaxial line 110 is its grounding end.
On the second surface of the substrate 101, a first end of the microstrip feed line 105 is connected to a feed end of the feed coaxial line 110 through a first through hole 111, a second end of the microstrip feed line 105 is connected to the antenna element arm 106, and the antenna return wire 107 is connected to the antenna element arm 106 and the second antenna ground 109, respectively. The arrangement and structure of the second radiation portion on the second surface of the substrate 101 may refer to the arrangement and structure of the first radiation portion on the first surface of the substrate 101, which will not be described herein.
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 provided 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, respectively, and the projected area of the first antenna ground 108 and the projected area of the second antenna ground 109 on the substrate 101 are greater than or equal to the projected area of the motor line and the lamp panel line in the horn of the unmanned aerial vehicle on the substrate 101. It is understood that in other embodiments, the area of the first antenna portion 108 may be slightly smaller or not related as long as the projected area of the second antenna portion 109 on the substrate 101 is ensured to be greater than or equal to the projected area of the motor line and the lamp panel line in the arm of the unmanned aerial vehicle on the substrate 101.
In the embodiment shown in the drawings, the second antenna ground 109 and the motor line and the lamp panel line in the arm of the unmanned aerial vehicle are located at the lower edge of the substrate 101, and it is to be understood that in other embodiments, the positions of the second antenna ground 109 and the motor line and the lamp panel line in the arm of the unmanned aerial vehicle on the substrate 101 may be changed according to the specific configuration of the antenna 10, for example, the positions may be located at the upper edge or the middle of the substrate 101, so long as the projection overlapping of the second antenna ground 109 and the motor line and the lamp panel line in the arm of the unmanned aerial vehicle is ensured.
In one embodiment, the first radiating portion and the second radiating portion have the same outer profile, and the first antenna ground 108 and the second antenna ground 109 have the same outer profile. Namely, 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 resonance of electromagnetic waves on the two sides of the antenna is further ensured under the same resonance 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 900MHz. It will be appreciated that in other embodiments, the antenna 10 may operate in other frequency bands, without limitation.
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 this embodiment may be applied to an unmanned aerial vehicle, and it may be understood that the body of the unmanned aerial vehicle is used in combination with a remote controller, and signals are transmitted and received through the antenna 10, so as to realize communication between the body of the unmanned aerial vehicle and the remote controller. The antenna 10 may be applied to other devices that need to transmit and receive signals.
According to the antenna 10 provided by the embodiment, the second antenna ground part is arranged, so that the influence of the motor wire, the lamp panel wire, coaxial wires of other antennas and other internal cables in the unmanned aerial vehicle on the antenna is small, and the antenna can normally work in a complex electromagnetic environment, namely, the antenna can be arranged in a horn with relatively large space and relatively complex environment without being limited in a foot rest with smaller space; in addition, the first surface and the second surface of the substrate are both 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 even if the thicknesses of different positions of the substrate are inconsistent in the production process, the radiation parts and the antenna ground parts with the same current path length exist on the two opposite surfaces of the substrate of the antenna, which are equivalent to the first surface and the second surface of the substrate 101, and meanwhile, the resonance of electromagnetic waves of the two antenna substrates which are not home in the same resonant frequency is ensured, so that the resonant frequency of the antenna cannot deviate, the radiation loss of the substrate 101 can be reduced, and the radiation efficiency and the performance of the antenna are improved.
The feeding coaxial line 110 may be located on the first surface side of the substrate 101, and the outer conductor of the feeding coaxial line 110 may be closely attached to the first antenna ground 108 and electrically connected to the first antenna ground 108. The inner conductor of the feeding coaxial line 110 extends 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 feeding coaxial line 110.
As illustrated in fig. 1 and 2, the first antenna ground 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 land 109 is provided on the second surface of the substrate 101 at a position almost overlapping with the first antenna land 108, and the second radiation portion is provided on the second surface of the substrate 101 at a position almost overlapping with the first radiation portion.
Referring to fig. 1 to 3, in a specific implementation, a first pad may be disposed at an end of the first antenna ground 108 near the microstrip feeder 102, and the first antenna ground 108 is soldered with an outer conductor of the feeding coaxial line 110 through the first pad; the microstrip feed line 102 may also be provided with a second pad at an end thereof close to the first antenna ground 108, through which the microstrip feed line 102 is soldered with the inner conductor of the feed coaxial line 110. It will be appreciated that in other embodiments, the connection between the first antenna portion 108 and the feeding coaxial line 110 and the connection between the microstrip feed line 102 and the feeding coaxial line 110 may be directly performed without a pad, which is not strictly limited herein.
It should be noted that, in other implementations, the feeding coaxial line 110 may also be located on one side of the second surface of the substrate 101, that is, the feeding end and the grounding end of the feeding coaxial line 110 are both located on the second surface of the substrate 101; alternatively, the feeding end of the feeding coaxial line 110 may be positioned on the first surface of the substrate 101, and the grounding end of the feeding coaxial line 110 may be closely attached to the second antenna ground 109, and the like, to achieve the above-described function.
Referring to fig. 1 and 2, in the present embodiment, the antenna 10 further has a first through hole 111 penetrating the first radiating portion, the substrate 101, and the second radiating portion, the first radiating portion and the second radiating portion being connected by a metal piece provided 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 the first antenna land 108, the substrate 101 and the second antenna land 109, and the first antenna land 108 and the second antenna land 109 are connected by a metal member disposed in the first through hole 111. That is, the first antenna ground 108 and the second antenna ground 109 are connected to each other by a through hole.
Specifically, after the first through hole 111 and the second through hole 112 are opened, molten metal is introduced into the first through hole 111 and the second through hole 112, and the molten metal is solidified and cooled to electrically connect the first radiation portion and the second radiation portion together, thereby electrically connecting the first antenna ground portion 108 and the second antenna ground portion 109 together. Of course, the metal member may be a wire or a metal wire penetrating the first through hole 111 and the second through hole 112.
In particular, the first through holes 111 may be plural, for example, the plural first through holes 111 may be distributed at respective edge positions of the first radiation portion and the second radiation portion. The second through holes 112 may be plural, for example, the plural second through holes 112 may be arranged along edges of the first antenna ground 108 and the second antenna ground 109 on a side close to the radiating element. Since the current paths on the front and back sides of the antenna 10 run along the edges of the radiating element and the antenna ground element when the antenna 10 is in operation, 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 current running direction is ensured.
The number of the first through holes 111 and the second through holes 112 is not limited as long as at least a sufficient number of the first through holes 111 near the feeding end of the feeding coaxial line 110 and a sufficient number of the second through holes 112 near the ground end of the feeding coaxial line 110 (near the position where the feeding coaxial line is provided in fig. 3) are ensured.
In one embodiment, the outer profiles of the first radiating portion and the second radiating portion may be the same, and the outer profiles of the first antenna ground portion 108 and the second antenna ground portion 109 are the same, that is, it is ensured that electromagnetic waves of the first face and the second face of the antenna 10 resonate at the same resonant frequency, so that the performance of the antenna 10 is more stable, and the antenna manufacturing is convenient. It will be appreciated that in other embodiments, the outer contours of the first radiating portion and the second radiating portion may not be identical, and the outer contours of the first antenna ground portion 108 and the second antenna ground portion 109 may not be identical, that is, the current path lengths of the first radiating portion and the second radiating portion may be substantially identical, so long as the current path lengths of the first antenna ground portion 108 and the second antenna ground portion 109 are substantially identical.
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 between each other is more reliable. Of course, in other embodiments, the corresponding portions may be electrically connected together later.
Fig. 4 is a standing wave parameter diagram of an antenna according to an embodiment of the present invention, as shown in fig. 4, the antenna 10 of the present embodiment may work at 897MHz to 935MHz, and the bandwidth is 38MHz, so as to meet the coverage of the commonly used 900MHz band. Fig. 5 is a diagram of an antenna according to a first embodiment of the present invention in a horizontal plane and a vertical plane. Referring to fig. 5, the antenna 10 of the present embodiment can still maintain omni-directional (H-plane) in the horizontal direction at 900MHz, and has a larger gain (E-plane) in the vertical direction, i.e., the antenna 10 can achieve omni-directional coverage at 900MHz.
The antenna 10 of the present embodiment is formed specifically as an inverted-F antenna. Of course, in other implementations, monopole antennas, dipole antennas, etc. are also possible and are 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, a radio frequency board is disposed in the horn 120, a radio frequency interface is disposed on the radio frequency board, and one end of a feeding coaxial line 110, which is far away from a feeding end thereof, is connected with the radio frequency interface, so as to realize 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 a second embodiment of the present invention. As shown in fig. 1 to 5, the present embodiment provides an unmanned aerial vehicle 20, which is configured to communicate with a control terminal such as a remote controller, so as to send information such as a flight speed, a height, a position, etc. of the unmanned aerial vehicle 20, and obtain a control instruction of the remote controller to control take-off, a flight attitude, a direction, landing, etc. 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, the motor 123 being configured to drive the rotor in rotation, thereby powering the unmanned aerial vehicle. The horn 122 internally mounts the antenna provided in embodiment one.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. An antenna for use with an unmanned aerial vehicle, the antenna being mounted on a horn of the unmanned aerial vehicle, the antenna comprising:
a substrate having first and second opposite sides;
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 side edge of a first face of the substrate, and the second radiation part is disposed on a side edge of the second face;
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 other side edge of the first face, and the second antenna ground is disposed on the other side edge of the second face;
a feeding coaxial line;
the radiating unit and the antenna ground unit are fed through the feeding coaxial line, the current path lengths of the first radiating part and the second radiating part are the same, and the current path lengths of the first antenna ground part and the second antenna ground part are the same;
the first radiation part and the second radiation part comprise microstrip feeder lines, antenna oscillator arms and ground return wires;
the first end of the microstrip feeder is connected with the feed end of the feed coaxial line, and the second end of the microstrip feeder is connected with the antenna element arm;
the return ground wire is respectively connected with the antenna element arm and the antenna ground unit;
the antenna return ground wire is parallel to the microstrip feeder line;
the antenna oscillator arm is perpendicular to the ground return wire and the microstrip feeder line respectively; or,
the antenna return ground wire and the microstrip feeder line form a U shape, and the antenna element arm is perpendicular to the microstrip feeder line;
the antenna element arm is arranged at the edge of the substrate along the length direction of the substrate.
2. The antenna of claim 1, further comprising:
the first through hole is used for penetrating 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 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.
3. The antenna of claim 1, wherein the feed coaxial line comprises an outer conductor and an inner conductor;
the feeding coaxial line is positioned on the first surface of the substrate, the outer conductor of the feeding coaxial line is clung to the first antenna ground part, and the inner conductor of the feeding coaxial line extends to the first radiation part to be electrically connected with the first radiation part.
4. The antenna of claim 1, wherein the first antenna ground and the second antenna ground are disposed on the substrate along a length direction of the substrate, and a projected area of the second antenna ground on the substrate is greater than or equal to a projected area of a motor line and a lamp panel line in a horn of the unmanned aerial vehicle on the substrate.
5. The antenna of claim 1, wherein the substrate is a substrate made of FR-4 grade material.
6. The antenna of claim 1, wherein the antenna has an operating frequency of 900MHz.
7. The antenna of claim 1, wherein a length of the first antenna ground along the substrate is less than a length of the feed coaxial line.
8. The antenna of claim 1, wherein the first radiating portion and the second radiating portion are integrally formed;
the first antenna ground and the second antenna ground are integrally formed.
9. The antenna of claim 1, wherein the first radiating portion and the second radiating portion have the same outer profile, and wherein the first antenna ground and the second antenna ground have the same outer profile.
10. An unmanned aircraft comprising a fuselage, a horn connected to the fuselage, and an antenna as claimed in any one of claims 1 to 9;
wherein, the antenna is arranged in the horn.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810949817.1A CN108767435B (en) | 2018-08-20 | 2018-08-20 | Antenna and unmanned aerial vehicle |
| PCT/CN2019/100918 WO2020038288A1 (en) | 2018-08-20 | 2019-08-16 | Antenna and unmanned aerial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810949817.1A CN108767435B (en) | 2018-08-20 | 2018-08-20 | Antenna and unmanned aerial vehicle |
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| Publication Number | Publication Date |
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| CN108767435A CN108767435A (en) | 2018-11-06 |
| CN108767435B true CN108767435B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810949817.1A Active CN108767435B (en) | 2018-08-20 | 2018-08-20 | Antenna and unmanned aerial vehicle |
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| CN (1) | CN108767435B (en) |
| WO (1) | WO2020038288A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767434B (en) * | 2018-08-20 | 2024-04-19 | 深圳市道通智能航空技术股份有限公司 | Antenna and unmanned aerial vehicle |
| CN108767435B (en) * | 2018-08-20 | 2024-02-27 | 深圳市道通智能航空技术股份有限公司 | Antenna and unmanned aerial vehicle |
| CN109494451B (en) | 2018-12-29 | 2024-05-17 | 深圳市道通智能航空技术股份有限公司 | Antenna and unmanned vehicles |
| CN113540764A (en) * | 2021-08-09 | 2021-10-22 | 深圳市道通智能航空技术股份有限公司 | Antenna and unmanned vehicles |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020038288A1 (en) | 2020-02-27 |
| CN108767435A (en) | 2018-11-06 |
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