CN114784483A - Antenna and unmanned aerial vehicle - Google Patents

Abstract

The embodiment of the invention relates to the technical field of unmanned aerial vehicles, and discloses an antenna and an unmanned aerial vehicle, wherein the antenna comprises a substrate, a feed part, a first radiation module, a second radiation module and a connecting module, the feed part comprises a first feed point and a second feed point, the first feed point is arranged on the first surface of the substrate, the second feed point is arranged on the second surface of the substrate, the first feed point is electrically connected with the second feed point, the first radiation module is arranged on the first surface of the substrate, the first radiation module is connected with the first feed point, the second radiation module is arranged on the second surface of the substrate, the second radiation module is connected with the second feed point, the first radiation module and the second radiation module are both used for receiving wireless signals, and two ends of the connecting module are respectively connected with the first radiation module and the second radiation module. Through the mode, the embodiment of the invention can improve the performance gain between the first radiation module and the second radiation module.

Description

Antenna and unmanned aerial vehicle

Technical Field

The embodiment of the invention relates to the technical field of unmanned aerial vehicles, in particular to an antenna and an unmanned aerial vehicle.

Background

Unmanned aerial vehicle's antenna is used for receiving wireless signal to control unmanned aerial vehicle's flight state, to unmanned aerial vehicle, unmanned aerial vehicle also pursues the miniaturization to the volume of antenna, and, present unmanned aerial vehicle antenna generally sets up the one side at the circuit board.

In the implementation process of the embodiment of the invention, the inventor finds that: when the volume of the antenna is small, if the antenna is provided only on one side of the circuit board, the ability of the antenna to receive wireless signals is weak.

Disclosure of Invention

The technical problem mainly solved by the embodiments of the present invention is to provide an antenna and an unmanned aerial vehicle, which can overcome the above problems or at least partially solve the above problems.

In order to solve the technical problem, one technical scheme adopted by the embodiment of the invention is as follows: providing an antenna, wherein the antenna comprises a substrate, a feeding portion, a first radiation module, a second radiation module and a connection module, the feeding portion comprises a first feeding point and a second feeding point, the first feeding point is arranged on a first surface of the substrate, the second feeding point is arranged on a second surface of the substrate, the first surface and the second surface of the substrate are opposite, the first feeding point and the second feeding point are electrically connected, the first radiation module is arranged on the first surface of the substrate, one end of the first radiation module is connected to the first feeding point, the second radiation module is arranged on the second surface of the substrate, one end of the second radiation module is connected to the second feeding point, the first radiation module and the second radiation module are both used for receiving wireless signals, and one end of the connection module is connected to the first radiation module, the other end of the connecting module is connected to the second radiation module.

Optionally, the first radiation module includes a first radiation element, the second radiation module includes a second radiation element, the connection module includes a first connection element, the substrate is provided with a first through hole, the first radiation element is connected to the first feeding point, the second radiation element is connected to the second feeding point, the first connection element is inserted into the first through hole, two ends of the first connection element are respectively connected to the first radiation element and the second radiation element, and the first radiation element and the second radiation element are jointly configured to receive a wireless signal in a first frequency range.

Optionally, the first radiating element comprises a first radiating arm and a second radiating arm, the second radiating element comprises a third radiating arm and a fourth radiating arm, the number of the first through holes and the number of the first connecting pieces are multiple, one end of the first radiating arm and one end of the second radiating arm are both connected to the first feeding point, a first U-shaped slot is formed between the first radiating arm and the second radiating arm, one end of the third radiating arm and one end of the fourth radiating arm are both connected to the second feeding point, a second U-shaped groove is formed between the third radiating arm and the fourth radiating arm, the opening directions of the first U-shaped groove and the second U-shaped groove are the same, and one first connecting piece is inserted into one first through hole, two ends of part of the first connecting piece are respectively connected to the first radiation arm and the third radiation arm, and two ends of part of the first connecting piece are respectively connected to the second radiation arm and the fourth radiation arm.

Optionally, the first radiation module further includes a third radiation element, the second radiation module further includes a fourth radiation element, the substrate is further provided with a second through hole, the connection module includes a second connection member, the third radiation element is connected to the first feeding point, the third radiation element is disposed in the first U-shaped groove, the fourth radiation element is connected to the second feeding point, the fourth radiation element is disposed in the second U-shaped groove, the second connection member is inserted into the second through hole, two ends of the first connection member are respectively connected to the third radiation element and the fourth radiation element, and the third radiation element and the fourth radiation element are commonly used for receiving a wireless signal in a second frequency range.

Optionally, the third radiation assembly comprises a fifth radiation arm and a sixth radiation arm, the fourth radiation assembly comprises a seventh radiation arm and an eighth radiation arm, the number of the second through holes and the number of the second connecting pieces are multiple, the fifth radiating arm and the sixth radiating arm are both connected to the first feeding point, a third U-slot is formed between the fifth radiating arm and the sixth radiating arm, the seventh radiating arm and the eighth radiating arm are both connected to the second feeding point, a fourth U-shaped groove is formed between the seventh radiation arm and the eighth radiation arm, the openings of the third U-shaped groove and the fourth U-shaped groove are in the same direction, a second connecting piece is inserted into the second through hole, and two ends of part of the second connecting piece are respectively connected to the fifth radiating arm and the seventh radiating arm, and two ends of part of the second connecting piece are respectively connected to the sixth radiating arm and the eighth radiating arm.

Optionally, the first radiation module further includes a fifth radiation assembly, the second radiation module further includes a sixth radiation assembly, the substrate is provided with a third through hole, the connection module further includes a third connection member, the fifth radiation assembly is connected to the first feeding point, the fifth radiation assembly is disposed in the third U-shaped slot, the sixth radiation assembly is connected to the second feeding point, the sixth radiation assembly is disposed in the fourth U-shaped slot, the third connection member is inserted into the third through hole, two ends of the third connection member are respectively connected to the fifth radiation assembly and the sixth radiation assembly, and the fifth radiation assembly and the sixth radiation assembly are commonly used for receiving a wireless signal in a third frequency range.

Optionally, the fifth radiating element comprises a ninth radiating arm and a tenth radiating arm, the sixth radiating element comprises an eleventh radiating arm and a twelfth radiating arm, the number of the third through holes and the number of the third connecting pieces are multiple, the ninth radiating arm and the tenth radiating arm are both connected to the first feeding point, a fifth U-shaped slot is formed between the ninth radiating arm and the tenth radiating arm, the eleventh radiating arm and the twelfth radiating arm are both connected to the second feeding point, a sixth U-shaped groove is formed between the eleventh radiation arm and the twelfth radiation arm, the openings of the fifth U-shaped groove and the sixth U-shaped groove face the same direction, a third connecting piece is inserted into the third through hole, two ends of part of the third connecting piece are respectively connected to the ninth radiation arm and the eleventh radiation arm, and two ends of part of the third connecting piece are respectively connected to the tenth radiation arm and the twelfth radiation arm.

Optionally, the ninth radiating arm includes a first fixing portion, a first connecting portion and a first extending portion, the tenth radiating arm includes a second fixing portion, a second connecting portion and a second extending portion, one end of the first fixing portion is connected to the first feeding point, one end of the first connecting portion is connected to the other end of the first fixing portion, the other end of the first connecting portion extends in a direction away from the tenth radiating arm, one end of the first extending portion is connected to the other end of the first connecting portion, the other end of the first extending portion extends in a direction close to the first feeding point, one end of the second fixing portion is connected to the first feeding point, the first fixing portion and the second fixing portion together form the fifth U-shaped slot, one end of the second connecting portion is connected to the other end of the second fixing portion, and the other end of the second connecting portion extends in a direction away from the ninth radiating arm, one end of the second extending portion is connected to the other end of the second connecting portion, and the other end of the second extending portion extends toward a direction close to the first feeding point.

Optionally, the substrate is further provided with a first through groove, a second through groove, a third through groove and a fourth through groove, the first through groove is located between the first radiation arm and the fifth radiation arm, the second through groove is located between the second radiation arm and the sixth radiation arm, the third through groove is located between the fifth radiation arm and the ninth radiation arm, and the fourth through groove is located between the sixth radiation arm and the tenth radiation arm.

In order to solve the above technical problem, another technical solution adopted by the embodiment of the present invention is: an unmanned aerial vehicle is provided, including foretell antenna.

The embodiment of the invention has the beneficial effects that: different from the situation in the prior art, in the embodiment of the present invention, the feeding portion is disposed on the substrate, one end of the first radiation module and one end of the second radiation module are both connected to the feeding portion, one end of the connection module is connected to the first radiation module, and the other end of the connection module is connected to the second radiation module, so as to improve the directional performance of the first radiation module and the second radiation module, and further improve the performance gain between the first radiation module and the second radiation module, so that the antenna has a stronger capability of receiving a wireless signal.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic diagram of a first explosive state of an antenna in an embodiment of the invention;

fig. 2 is a schematic structural view of a second explosion state of the antenna in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a base and a connection module in an embodiment of the invention;

fig. 4 is a parameter diagram of an antenna in an embodiment of the invention;

fig. 5 is a schematic diagram of the direction parameters of the wireless signals of the antenna in the high frequency band in the embodiment of the present invention;

fig. 6 is a schematic diagram of the directional parameters of the wireless signals of the antenna in the middle frequency band according to the embodiment of the present invention;

fig. 7 is a schematic diagram of the directional parameters of the wireless signals of the antenna in the low frequency band in the embodiment of the invention;

fig. 8 is a schematic structural view of another embodiment of a ninth radiating element in the present invention;

fig. 9 is a schematic structural diagram of a ninth radiation element according to still another embodiment of the present invention.

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and are not to be considered limiting of the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 and fig. 2, the antenna 100 includes: the antenna comprises a substrate 1, a feed portion 2, a connection module 3, a first radiation module 4, a second radiation module 5, a third radiation module 6 and a fourth radiation module 7. The feeding portion 2 is disposed on the substrate 1, one end of the first radiation module 4 is electrically connected to the feeding portion 2, and the first radiation module 4 is located on the first surface of the substrate 1. One end of the second radiation module 5 is electrically connected to the feeding portion 2, the second radiation module 5 is located on the second surface of the substrate 1, and the first surface and the second surface of the substrate 1 are oppositely arranged. One end of the third radiation module 6 is electrically connected to the feeding portion 2, and the third radiation module 6 is located on the first surface of the substrate 1. One end of the fourth radiation module 7 is electrically connected to the feeding portion 2, and the fourth radiation module 7 is located on the second surface of the substrate 1. The first radiation module 4, the second radiation module 5, the third radiation module 6 and the fourth radiation module 7 are all used for receiving wireless signals. One end of the connection module 3 is respectively connected with the first radiation module 4 and the third radiation module 6, the other end of the connection module 3 is respectively connected with the second radiation module 5 and the fourth radiation module 7, the connection module 3 can improve the directional performance of the first radiation module 4 and the second radiation module 5, and the third radiation module 6 and the fourth radiation module 7, so that the capability of the antenna 100 for receiving wireless signals is improved.

Referring to fig. 1, the substrate 1 is provided with a plurality of first through holes 101, a plurality of second through holes 102, a plurality of third through holes 103, a plurality of fourth through holes 104, a plurality of fifth through holes 105, a plurality of sixth through holes 106, and a first through groove 107. The first through slot 107 is used for receiving a feeder coaxial line (not shown) to facilitate soldering and routing of the feeder coaxial line, and the feeder coaxial line is used for connecting the feeding portion 2 and other devices to transmit a wireless signal received by the antenna 100 to other devices.

With regard to the feeding portion 2 described above, referring to fig. 1, the feeding portion 2 includes a first feeding point 21 and a second feeding point 22. The first feeding point 21 is disposed on the first surface of the substrate 1, the second feeding point 22 is disposed on the second surface of the substrate 1, and the first feeding point 21 and the second feeding point 22 are electrically connected. The first radiation module 4 and the third radiation module 6 are electrically connected to the first feeding point 21, and the second radiation module 5 and the fourth radiation module 7 are electrically connected to the second feeding point 22.

Referring to fig. 3, the connection module 3 includes a plurality of first connection members 31, a plurality of second connection members 32, a plurality of third connection members 33, a plurality of fourth connection members 34, a plurality of fifth connection members 35, and a plurality of sixth connection members 36. The first connecting member 31 is inserted into the first through hole 101, and two ends of the first connecting members 31 are respectively connected to the first radiation module 4 and the second radiation module 5. The second connector 32 is inserted into the second through hole 102, and two ends of the second connectors 32 are respectively connected to the first radiation module 4 and the second radiation module 5. The third connecting member 33 is inserted into the third through hole 103, and two ends of the third connecting members 33 are respectively connected to the first radiation module 4 and the second radiation module 5. The fourth connecting member 34 is inserted into the fourth through hole 104, and two ends of the fourth connecting members 34 are respectively connected to the third radiation module 6 and the fourth radiation module 7. The fifth connecting member 35 is inserted into the fifth through hole 105, and two ends of the fifth connecting members 35 are respectively connected to the third radiation module 6 and the fourth radiation module 7. The sixth connecting element 36 is inserted into the sixth through hole 106, and two ends of the sixth connecting elements 36 are connected to the third radiation module 6 and the fourth radiation module 7, respectively. The plurality of first connectors 31, the plurality of second connectors 32, and the plurality of third connectors 33 may improve directional performance of the first radiation modules 4 and the second radiation modules 5, and the plurality of fourth connectors 34, the plurality of fifth connectors 35, and the plurality of sixth connectors 36 may improve directional performance of the third radiation modules 4 and the fourth radiation modules 7, thereby improving performance gain of the antenna 100.

Referring to fig. 1 and 2 for the first radiation module 4, the first radiation module 4 includes a first radiation element 41, a third radiation element 42, and a fifth radiation element 43. The first, third and fifth radiation elements 41, 42 and 43 are all connected to the first feeding point 21, and the first, third and fifth radiation elements 41, 42 and 43 are all disposed on the first surface of the substrate 1. The first radiation element 41 is configured to receive wireless signals in a first frequency range, the third radiation element 42 is configured to receive wireless signals in a second frequency range, and the fifth radiation element 43 is configured to receive wireless signals in a third frequency range, where the first frequency range, the second frequency range, and the third frequency range are different.

Specifically, referring to fig. 4, the first frequency range is 5.28GHz-6.00GHz, and the wireless signals in the first frequency range are referred to as high-band wireless signals hereinafter. The second frequency range is 2.29GHz-2.48GHz, and the wireless signals in the second frequency range are referred to as intermediate frequency band wireless signals hereinafter. The third frequency range is 0.86GHz-0.94GHz, and the wireless signals in the third frequency range are referred to as low-band wireless signals hereinafter.

Referring to fig. 2, the first radiation element 41 includes a first radiation arm 411, a second radiation arm 412 and a first U-shaped slot 413. One end of the first radiating arm 411 and one end of the second radiating arm 412 are both connected to the first feeding point 21, and a first U-shaped slot 413 is formed between the first radiating arm 411 and the second radiating arm 412.

In some embodiments, the lengths of the first radiating arm 411 and the second radiating arm 412 are both greater than or equal to 1/8 of the wavelength corresponding to the middle frequency of the high-band wireless signal, and less than or equal to 3/8 of the wavelength corresponding to the middle frequency of the high-band wireless signal. Specifically, the lengths of the first radiation arm 411 and the second radiation arm 412 are both greater than or equal to 6.20mm, and less than or equal to 18.60 mm.

Referring to fig. 2, the third radiation element 42 includes a fifth radiation arm 421, a sixth radiation arm 422, and a third U-shaped groove 423. The fifth radiation arm 421 and the sixth radiation arm 422 are both connected to the first feeding point 21, the fifth radiation arm 421 and the sixth radiation arm 422 are both disposed in the first U-slot 413, and a third U-slot 423 is formed between the fifth radiation arm 421 and the sixth radiation arm 422.

In some embodiments, referring to fig. 2, the fifth radiating arm 421 and the sixth radiating arm 422 are arranged in a mirror image along a first direction, the first direction is perpendicular to a direction in which an opening of the first U-shaped slot faces, and the first feeding point 21 is located between the fifth radiating arm 421 and the sixth radiating arm 422.

In some embodiments, the lengths of the fifth radiating arm 421 and the sixth radiating arm 422 are both greater than or equal to 1/8 of the wavelength corresponding to the middle frequency of the middle-band wireless signal, and less than or equal to 3/8 of the wavelength corresponding to the middle frequency of the middle-band wireless signal. Specifically, the lengths of the fifth radiation arm 421 and the sixth radiation arm 422 are both greater than or equal to 14.67mm and less than or equal to 44.01 mm.

Referring to fig. 2 for the fifth radiation element 43, the fifth radiation element 43 includes a ninth radiation arm 431, a tenth radiation arm 432 and a fifth U-shaped groove 433. The ninth radiating arm 431 and the tenth radiating arm 432 are both connected to the first feeding point 21, the ninth radiating arm 431 and the tenth radiating arm 432 are both disposed in the third U-shaped slot 423, a fifth U-shaped slot 433 is formed between the ninth radiating arm 431 and the tenth radiating arm 432, and the opening of the first U-shaped slot 413, the opening of the fifth U-shaped slot 433, and the opening of the third U-shaped slot 423 are all oriented in the same direction.

Referring to fig. 2, the ninth radial arm 431 includes a first fixing portion 4311, a first connecting portion 4312 and a first extending portion 4313. One end of the first fixing portion 4311 is connected to the first feeding point 21, one end of the first connection portion 4312 is connected to the other end of the first fixing portion 4311, the other end of the first connection portion 4312 extends in a direction away from the tenth radiating arm 432, one end of the first extension portion 4313 is connected to the other end of the first connection portion 4312, and the other end of the first extension portion 4313 extends in a direction close to the first feeding point 21, so that the length of the antenna 100 in the second direction can be reduced, and the second direction is the direction toward which the opening of the fifth U-shaped slot 433 faces.

Referring to fig. 2, the tenth radiating arm 432 includes a second fixing portion 4321, a second connecting portion 4322 and a second extending portion 4323. One end of the second fixing portion 4321 is connected to the first feeding point 21, the first fixing portion 4311 and the second fixing portion 4321 together form the fifth U-shaped groove 433, one end of the second connecting portion 4322 is connected to the other end of the second fixing portion 4321, the other end of the second connecting portion 4322 extends in a direction away from the ninth radiating arm 431, one end of the second extending portion 4323 is connected to the other end of the second connecting portion 4322, and the other end of the second extending portion 4323 extends in a direction close to the first feeding point 21, so that the length of the antenna 100 in the second direction can be reduced.

In some embodiments, referring to fig. 2, the ninth radiating arm 431 and the tenth radiating arm 432 are arranged in a mirror image along the first direction, and the first feeding point 21 is located in the middle of the ninth radiating arm 431 and the tenth radiating arm 432.

In some embodiments, the lengths of the ninth radiating arm 431 and the tenth radiating arm 432 are both greater than or equal to 1/8 of the wavelength corresponding to the middle frequency of the low-band wireless signal, and less than or equal to 3/4 of the wavelength corresponding to the middle frequency of the low-band wireless signal. Specifically, the lengths of the ninth radiating arm 431 and the tenth radiating arm 432 are both greater than or equal to 38.88mm and less than or equal to 233.33 mm.

Referring to fig. 1 and 2, the second radiation module 5 includes a second radiation element 51, a fourth radiation element 52, and a sixth radiation element 53. The second, fourth and sixth radiation elements 51, 52 and 53 are disposed on the second surface of the substrate 1, and the second, fourth and sixth radiation elements 51, 52 and 53 are connected to the second feeding point 22. The second radiation assembly 51 and the first radiation assembly 41 are commonly used for receiving high-frequency wireless signals, the plurality of first through holes 101 are uniformly distributed in a projection of the second radiation assembly 51 on the second surface of the substrate 1 along the third direction, one ends of the plurality of first connecting pieces 31 are connected to the first radiation assembly 41, and the other ends of the plurality of first connecting pieces 31 are connected to the second radiation assembly 51, so that the performance gain of the first radiation module 4 and the second radiation module 5 on the high-frequency wireless signals is improved. The fourth radiation element 52 and the third radiation element 42 are used together to receive a radio signal in a middle frequency band, and the second through holes 102 are uniformly distributed in a projection of the fourth radiation element 52 on the second surface of the substrate 1 along a third direction, one end of the second connection elements 32 is connected to the third radiation element 42, and the other end of the second connection elements 32 is connected to the fourth radiation element 52, so that performance gain of the first radiation module 4 and the second radiation module 5 on the radio signal in the middle frequency band is improved. The sixth radiation element 53 and the fifth radiation element 43 are used together to receive a low-frequency wireless signal, and the third through holes 103 are uniformly distributed in a projection of the sixth radiation element 53 on the second surface of the substrate 1 along the third direction, one end of the third connection members 33 is connected to the fifth radiation element 43, and the other end of the third connection members 33 is connected to the sixth radiation element 53, so that the performance gain of the first radiation module 4 and the second radiation module 5 on the low-frequency wireless signal is improved.

Referring to fig. 2, the second radiating element 51 includes a third radiating arm 511, a fourth radiating arm 512, and a second U-shaped slot 513. One end of the third radiating arm 511 and one end of the fourth radiating arm 512 are both connected to the second feeding point 22, a second U-shaped slot 513 is formed between the third radiating arm 511 and the fourth radiating arm 512, and the opening of the second U-shaped slot 513 and the opening of the first U-shaped slot 413 are oriented in the same direction.

In some embodiments, the lengths of the third radiating arm 511 and the fourth radiating arm 512 are greater than or equal to 1/8 of the wavelength corresponding to the middle frequency of the high-band wireless signal, and less than or equal to 3/8 of the wavelength corresponding to the middle frequency of the high-band wireless signal. Specifically, the lengths of the third and fourth radiating arms 511 and 512 are each greater than or equal to 6.20mm, and less than or equal to 18.60 mm.

In some embodiments, the second radiation element 51 and the first radiation element 41 are arranged in a mirror image along a third direction, which is perpendicular to the first direction and the second direction, respectively.

Referring to fig. 2, regarding the fourth radiation assembly 52, the fourth radiation assembly 52 includes a seventh radiation arm 521, an eighth radiation arm 522 and a fourth U-shaped groove 523. The seventh radiating arm 521 and the eighth radiating arm 522 are both disposed in the second U-slot 513, and one end of the seventh radiating arm 521 and one end of the eighth radiating arm 522 are both connected to the second feeding point 22. The seventh radiation arm 521 and the eighth radiation arm 522 jointly form the fourth U-shaped slot 523, and the opening of the fourth U-shaped slot 523 and the opening of the third U-shaped slot 423 are oriented in the same direction.

In some embodiments, the lengths of the seventh radiating arm 521 and the eighth radiating arm 522 are greater than or equal to 1/8 of the wavelength corresponding to the middle frequency of the middle-band wireless signal, and less than or equal to 3/8 of the wavelength corresponding to the middle frequency of the middle-band wireless signal. Specifically, the lengths of the seventh and eighth radiating arms 521 and 522 are each greater than or equal to 14.67mm and less than or equal to 44.01 mm.

In some embodiments, the fourth radiation assembly 52 and the third radiation assembly 42 are arranged in a mirror image along the third direction.

Referring to fig. 2, regarding the sixth radiating element 53, the sixth radiating element 53 includes an eleventh radiating arm 531, a twelfth radiating arm 532 and a sixth U-shaped groove 533. The eleventh and twelfth radiating arms 531 and 532 are disposed in the fourth U-slot 523, and one end of the eleventh and twelfth radiating arms 531 and 532 are connected to the second feeding point 22. The eleventh radiating arm 531 and the twelfth radiating arm 532 together form the sixth U-shaped slot 533, and the opening of the sixth U-shaped slot 533 and the opening of the fifth U-shaped slot 433 are oriented in the same direction.

Referring to fig. 2, the eleventh radiating arm 531 includes a third fixing portion 5311, a third connecting portion 5312 and a third extending portion 5313. One end of the third fixing portion 5311 is connected to the second feeding point 22, one end of the third connecting portion 5312 is connected to the other end of the third fixing portion 5311, the other end of the third connecting portion 5312 extends in a direction away from the twelfth radiating arm 532, one end of the third extending portion 5313 is connected to the other end of the third connecting portion 5312, and the other end of the third extending portion 5313 extends in a direction close to the second feeding point 22, so that the length of the antenna 100 in the second direction can be reduced.

Referring to fig. 2, the twelfth radiating arm 532 includes a fourth fixing portion 5321, a fourth connecting portion 5322 and a fourth extending portion 5323. One end of the fourth fixing portion 5321 is connected to the second feeding point 22, the third fixing portion 5311 and the fourth fixing portion 5321 together form the sixth U-shaped groove 533, one end of the fourth connecting portion 5322 is connected to the other end of the fourth fixing portion 5321, the other end of the fourth connecting portion 5322 extends in a direction away from the eleventh radiating arm 531, one end of the fourth extending portion 5323 is connected to the other end of the fourth connecting portion 5322, and the other end of the fourth extending portion 5323 extends in a direction close to the second feeding point 22, so that the length of the antenna 100 in the second direction can be reduced.

In some embodiments, the lengths of the eleventh radiation arm 531 and the twelfth radiation arm 532 are both greater than or equal to 1/8 of the wavelength corresponding to the middle frequency of the low-band wireless signal, and less than or equal to 3/4 of the wavelength corresponding to the middle frequency of the low-band wireless signal. Specifically, the lengths of the eleventh and twelfth radiating arms 531 and 532 are each greater than or equal to 38.88mm, and less than or equal to 233.33 mm.

In some embodiments, the sixth radiation element 53 and the fifth radiation element 43 are arranged in a mirror image along a third direction.

Referring to fig. 2, the third radiation module 6 includes a seventh radiation element 61, an eighth radiation element 62 and a ninth radiation element 63. The seventh, eighth and ninth radiating elements 61, 62 and 63 are all connected to the first feeding point 21, and the seventh, eighth and ninth radiating elements 61, 62 and 63 are disposed on the first surface of the substrate 1. The seventh radiation element 61, the first radiation element 41 and the second radiation element 51 are all used for receiving high-frequency-band wireless signals. The eighth radiation element 62, the third radiation element 42 and the fourth radiation element 52 are all configured to receive a middle-band wireless signal, and the ninth radiation element 63, the fifth radiation element 43 and the sixth radiation element 53 are all configured to receive a low-band wireless signal.

Referring to fig. 2, regarding the seventh radiating element 61, the seventh radiating element 61 includes a thirteenth radiating arm 611, a fourteenth radiating arm 612 and a seventh U-shaped groove 613. An end of the thirteenth radiating arm 611 and an end of the fourteenth radiating arm 612 are both connected to the first feeding point 21, the thirteenth radiating arm 611 and the fourteenth radiating arm 612 together form the seventh U-shaped slot 613, and an opening of the seventh U-shaped slot 613 faces opposite to an opening of the first U-shaped slot 413.

In some embodiments, the length of each of the thirteenth radiating arm 611 and the fourteenth radiating arm 612 is greater than or equal to 1/8 of the wavelength corresponding to the middle frequency of the high-band wireless signal, and is less than or equal to 3/8 of the wavelength corresponding to the middle frequency of the high-band wireless signal. Specifically, the length of each of the thirteenth radiating arm 611 and the fourteenth radiating arm 612 is greater than or equal to 6.20mm, and is less than or equal to 18.60 mm.

Referring to fig. 2, the eighth radiating element 62 includes a fifteenth radiating arm 621, a sixteenth radiating arm 622, and an eighth U-shaped slot 623. The fifteenth radiating arm 621 and the sixteenth radiating arm 622 are disposed in the seventh U-shaped slot 613, and one end of the fifteenth radiating arm 621 and one end of the sixteenth radiating arm 622 are connected to the first feeding point 21. The fifteenth and sixteenth radiation arms 621 and 622 together form the eighth U-shaped groove 623, and the opening of the eighth U-shaped groove 623 and the opening of the third U-shaped groove 423 have the same orientation.

In some embodiments, the fifteenth radiation arm 621 and the sixteenth radiation arm 622 are arranged in a mirror image along the first direction, the fifteenth radiation arm 621 and the fifth radiation arm 421 are arranged in a mirror image along the second direction, and the sixteenth radiation arm 622 and the sixth radiation element 322 are arranged in a mirror image along the second direction.

Referring to fig. 2, the ninth radiation element 63 includes a first fixing arm 631, a first connecting arm 632, a first extension arm 633 and a second extension arm 634. The first fixing arm 631 is disposed in the eighth U-shaped groove, one end of the first fixing arm 631 is connected to the first feeding point 21, and the other end of the first fixing arm 631 is connected to the first connecting arm 632. One end of the first extension arm 633 is fixed to one end of the first connection arm 632, the other end of the first extension arm 633 extends toward the first feeding point 21, and a vertical distance between the first extension arm 633 and the first fixing arm 631 increases from one end of the first extension arm 633 to the other end of the first extension arm 633. One end of the second extension arm 634 is fixed to the other end of the first connection arm 632, the other end of the second extension arm 634 extends in a direction close to the first feeding point 21, and a vertical distance between the second extension arm 634 and the first fixing arm 631 is increased from one end of the second extension arm 634 to the other end of the second extension arm 634. Therefore, the length of the antenna 100 in the second direction can be reduced while ensuring the length required for the ninth radiating element 63 to normally receive the low frequency side radio signal.

In some embodiments, referring to fig. 2, the first extension arm 633 and the second extension arm 634 are symmetrical with respect to the first fixing arm 631, and a sum of the length of the first extension arm 633, a half of the length of the first connection arm 632, and the length of the first fixing arm 431 is greater than or equal to 1/8 of a wavelength corresponding to a middle frequency of a low-band wireless signal, and is less than or equal to 3/8 of a wavelength corresponding to a middle frequency of a low-band wireless signal. Specifically, the sum of the length of the first extension arm 633, half of the length of the first connection arm 632, and the length of the first fixing arm 431 is greater than or equal to 38.88mm, and is less than or equal to 116.64 mm.

In some embodiments, referring to fig. 8, one end of the first extension arm 633 is fixed to one end of the first connection arm 632, the other end of the first extension arm 633 is bent and extended toward the first feeding point 21, and a vertical distance between the first extension arm 633 and the first fixing arm 631 increases from one end of the first extension arm 633 to the other end of the first extension arm 633. One end of the second extension arm 634 is fixed to the other end of the first connection arm 632, the other end of the second extension arm 634 extends in a direction approaching the first feeding point 21, and a vertical distance between the second extension arm 634 and the first fixing arm 631 is increased from the one end of the second extension arm 634 to the other end of the second extension arm 634.

In some embodiments, referring to fig. 9, a vertical distance between the first extension arm 633 and the first fixing arm 631 is constant from one end of the first extension arm 633 to the other end of the first extension arm 633, and a vertical distance between the second extension arm 634 and the first fixing arm 631 is also constant from one end of the second extension arm 634 to the other end of the second extension arm 634.

In fig. 8 and 9, the ninth radiating element 63 is configured in different shapes, so that the antenna 100 can be installed in different spaces, and the antenna 100 can have different directional performances for low-frequency band wireless signals, thereby expanding the application range of the antenna 100.

Referring to fig. 2, the fourth radiation module 7 includes a tenth radiation element 71, an eleventh radiation element 72, and a twelfth radiation element 73. The tenth radiation element 71, the eleventh radiation element 72 and the twelfth radiation element 73 are disposed on the second surface of the substrate 1, and the tenth radiation element 71, the eleventh radiation element 72 and the twelfth radiation element 73 are all connected to the second feeding point 22. The first radiation element 41, the second radiation element 51, the seventh radiation element 61, and the tenth radiation element 71 are commonly used for receiving high-frequency-band wireless signals, and the plurality of fourth through holes 104 are uniformly distributed in a projection of the tenth radiation element 71 on the second surface of the substrate 1 along the third direction, one end of the plurality of fourth connecting members 34 is connected to the seventh radiation element 61, and the other end of the plurality of fourth connecting members 34 is connected to the tenth radiation element 71, so that the performance gain of the third radiation module 6 and the fourth radiation module 7 on the high-frequency-band wireless signals can be improved. The third radiation element 42, the fourth radiation element 52, the eighth radiation element 62 and the eleventh radiation element 72 are commonly used for receiving a radio signal in a middle frequency band, and the fifth through holes 105 are uniformly distributed in a projection of the eleventh radiation element 72 on the second surface of the substrate 1 along the third direction, one ends of the fifth connecting members 35 are connected to the eighth radiation element 62, and the other ends of the fifth connecting members 35 are connected to the eleventh radiation element 72, so that performance gains of the third radiation module 6 and the fourth radiation module 7 for the radio signal in the middle frequency band can be improved. The fifth radiation element 43, the sixth radiation element 53, the ninth radiation element 63 and the twelfth radiation element 73 are commonly used for receiving a low-frequency wireless signal, and the sixth through holes 106 are uniformly distributed in a projection of the twelfth radiation element 73 on the second surface of the substrate 1 along the third direction, one end of the sixth connection members 36 is connected to the ninth radiation element 63, and the other end of the sixth connection members 36 is connected to the twelfth radiation element 73, so that the performance gain of the third radiation module 6 and the fourth radiation module 7 on the low-frequency wireless signal can be improved.

Referring to fig. 2, the tenth radiation element 71 includes a seventeenth radiation arm 711, an eighteenth radiation arm 712, and a ninth U-shaped slot 713. The seventeenth radiating arm 711 and the eighteenth radiating arm 712 are both disposed on the second surface of the substrate 1, and one end of the seventeenth radiating arm 711 and one end of the eighteenth radiating arm 712 are both connected to the second feeding point 22. The seventeenth radiation arm 711 and the eighteenth radiation arm 712 collectively form the ninth U-slot 713, and an opening of the ninth U-slot 713 and an opening of the second U-slot 513 are oriented oppositely.

In some embodiments, the tenth and seventh radiation elements 71, 61 are arranged in a mirror image along the third direction.

Referring to fig. 2, the eleventh radiation element 72 includes a nineteenth radiation arm 721, a twentieth radiation arm 722 and a tenth U-shaped slot 723. The nineteenth radiation arm 721 and the twentieth radiation arm 722 are both disposed in the ninth U-slot 713, and one end of the nineteenth radiation arm 721 and one end of the twentieth radiation arm 722 are both connected to the second feeding point 22. The nineteenth and twentieth radiating arms 721, 722 form the tenth U-slot together, and an opening of the tenth U-slot 723 is opposite to an opening of the fourth U-slot 523.

In some embodiments, the eleventh radiation assembly 72 and the fourth radiation assembly 52 are arranged in a mirror image along the second direction.

Referring to fig. 2, the twelfth radiation assembly 73 includes a second fixing arm 731, a second connecting arm 732, a third extension arm 733 and a fourth extension arm 734. The second fixing arm 731 is disposed in the eighth U-shaped slot, one end of the second fixing arm 731 is connected to the second feeding point 22, and the other end of the second fixing arm 731 is connected to the second connecting arm 732. One end of the third extension arm 733 is fixed to one end of the second connection arm 732, the other end of the third extension arm 733 extends in a direction close to the second feeding point 22, and a vertical distance between the third extension arm 733 and the second fixing arm 731 increases from one end of the third extension arm 733 to the other end of the third extension arm 733. One end of the fourth extension arm 734 is fixed to the other end of the second connection arm 732, the other end of the fourth extension arm 734 extends toward the second feeding point 22, and the perpendicular distance between the fourth extension arm 734 and the second fixing arm 731 is increased from the one end of the fourth extension arm 734 to the other end of the fourth extension arm 734. Therefore, the length of the antenna 100 in the second direction can be reduced while ensuring the length required for the twelfth radiating element 73 to normally receive the low frequency side radio signal.

In some embodiments, the twelfth radiating element 73 and the ninth radiating element 63 are arranged in a mirror image along the third direction.

In some embodiments, referring to fig. 1 and fig. 2, the substrate 1 further includes a second through groove 108, a third through groove 109, a fourth through groove 110, a fifth through groove 111, a sixth through groove 112, a seventh through groove 113, an eighth through groove 114, and a ninth through groove 115. The second through slot 108 is located between the first radiating arm 411 and the fifth radiating arm 421, the third through slot 109 is located between the second radiating arm 412 and the sixth radiating arm 422, and the fifth through slot 111 is located between the sixth radiating arm 422 and the tenth radiating arm 432. The fourth through groove 110 is located between the fifth radiating arm 421 and the ninth radiating arm 431. The second through groove 108, the third through groove 109, the fourth through groove 110, and the fifth through groove 111 may reduce dielectric loss between the first radiation module 4 and the second radiation module 5, thereby improving directivity and performance gain of the antenna 100.

The sixth through groove 112 is located between the thirteenth radiation arm 611 and the fifteenth radiation arm 621, the seventh through groove 113 is located between the fourteenth radiation arm 612 and the sixteenth radiation arm 622, the eighth through groove 114 is located between the fifteenth radiation arm 621 and the first fixing arm 631, and the ninth through groove 115 is located between the sixteenth radiation arm 622 and the first fixing arm 631.

The sixth through groove 112, the seventh through groove 113, the eighth through groove 114, and the ninth through groove 115 may reduce dielectric loss between the third radiation module 6 and the fourth radiation module 7, thereby improving directivity and performance gain of the antenna 100.

For the reader to better understand the concept of the present invention, the antenna 100 was experimentally tested as follows:

1) for the high frequency band, the antenna 100 connects the first radiation element 41 and the seventh radiation element 61 to the first feeding point 21, connects the second radiation element 51 and the tenth radiation element 71 to the second feeding point 22, connects the first feeding point 21 to the second feeding point 22, connects two ends of the first connection elements 31 to the first radiation element 41 and the second radiation element 51, respectively, and connects two ends of the fourth connection elements 34 to the second radiation element 51 and the tenth radiation element 71, respectively, please refer to fig. 5, wherein a thick solid line in fig. 5 represents the directivity of the antenna 100 in the horizontal plane, a dotted line represents the directivity of the antenna 100 in the vertical plane perpendicular to the horizontal plane, and it can be seen from fig. 5 that the antenna 100 has omnidirectional directivity in the horizontal plane for the high frequency band wireless signals.

2) For the middle frequency band, the antenna 100 connects the third radiation element 42 and the eighth radiation element 62 to the first feeding point 21, connects the fourth radiation element 52 and the eleventh radiation element 72 to the second feeding point 22, connects two ends of the second connection elements 32 to the third radiation element 42 and the fourth radiation element 52, respectively, and connects two ends of the fifth connection elements 35 to the eighth radiation element 62 and the eleventh radiation element 72, respectively, please refer to fig. 6, wherein a thick solid line in fig. 6 represents the directivity of the antenna 100 in the horizontal plane, and a dotted line represents the directivity of the antenna 100 in the vertical plane perpendicular to the horizontal plane, and it can be seen from fig. 6 that the wireless signal of the middle frequency band of the antenna 100 has omnidirectional directivity in the horizontal plane.

2) For the low frequency band, the antenna 100 further connects the fifth radiation element 43 and the ninth radiation element 63 to the first feeding point 21, connects the sixth radiation element 53 and the twelfth radiation element 73 to the second feeding point 22, connects two ends of the third connectors 33 to the fifth radiation element 43 and the sixth radiation element 53, respectively, and connects two ends of the sixth connectors 36 to the ninth radiation element 63 and the twelfth radiation element 73, respectively, please refer to fig. 7, where a thick solid line in fig. 7 represents the directivity of the antenna 100 in the horizontal plane, and a dotted line represents the directivity of the antenna 100 in the vertical plane perpendicular to the horizontal plane, and it can be seen from fig. 7 that the antenna 100 has omnidirectional directivity in the horizontal plane for the low frequency band wireless signals.

In addition, the first radiation module 4, the second radiation module 5, the third radiation module 6 and the fourth radiation module 7 are all connected to the feeding portion 2, so that the antenna 100 can cover wireless signals in three frequency bands, namely a high frequency band, a middle frequency band and a low frequency band, and the size of the antenna 100 is reduced.

The invention further provides an unmanned aerial vehicle embodiment, the unmanned aerial vehicle includes the antenna 100, and for the specific structure and function of the antenna 100, reference may be made to the above embodiment, which is not described in detail herein.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims (10)

1. An antenna, comprising:

a substrate;

the feed part comprises a first feed point and a second feed point, the first feed point is arranged on the first surface of the substrate, the second feed point is arranged on the second surface of the substrate, the first surface and the second surface of the substrate are opposite, and the first feed point and the second feed point are electrically connected;

the first radiation module is arranged on the first surface of the substrate, and one end of the first radiation module is connected to the first feed point;

the second radiation module is arranged on the second surface of the substrate, one end of the second radiation module is connected to the second feeding point, and the first radiation module and the second radiation module are both used for receiving wireless signals;

and one end of the connecting module is connected with the first radiation module, and the other end of the connecting module is connected with the second radiation module.

2. The antenna of claim 1,

the first radiation module comprises a first radiation assembly, the second radiation module comprises a second radiation assembly, the connecting module comprises a first connecting piece, and the substrate is provided with a first through hole;

the first radiating assembly is connected to the first feeding point, the second radiating assembly is connected to the second feeding point, the first connecting piece is inserted into the first through hole, two ends of the first connecting piece are respectively connected to the first radiating assembly and the second radiating assembly, and the first radiating assembly and the second radiating assembly are jointly used for receiving wireless signals in a first frequency range.

3. The antenna of claim 2,

the first radiation assembly comprises a first radiation arm and a second radiation arm, the second radiation assembly comprises a third radiation arm and a fourth radiation arm, and the number of the first through holes and the number of the first connecting pieces are multiple;

one end of the first radiating arm and one end of the second radiating arm are both connected to the first feeding point, a first U-shaped groove is formed between the first radiating arm and the second radiating arm, one end of the third radiating arm and one end of the fourth radiating arm are both connected to the second feeding point, a second U-shaped groove is formed between the third radiating arm and the fourth radiating arm, the openings of the first U-shaped groove and the second U-shaped groove face the same direction, the first connecting piece is inserted into the first through hole, part of two ends of the first connecting piece are connected to the first radiating arm and the third radiating arm respectively, and part of two ends of the first connecting piece are connected to the second radiating arm and the fourth radiating arm respectively.

4. The antenna of claim 3,

the first radiation module further comprises a third radiation assembly, the second radiation module further comprises a fourth radiation assembly, the substrate is further provided with a second through hole, and the connection module comprises a second connecting piece;

the third radiating assembly is connected to the first feeding point, the third radiating assembly is arranged in the first U-shaped groove, the fourth radiating assembly is connected to the second feeding point, the fourth radiating assembly is arranged in the second U-shaped groove, the second connecting piece is connected to the second through hole in an inserted mode, two ends of the first connecting piece are connected to the third radiating assembly and the fourth radiating assembly respectively, and the third radiating assembly and the fourth radiating assembly are used for receiving wireless signals in a second frequency range together.

5. The antenna of claim 4,

the third radiation assembly comprises a fifth radiation arm and a sixth radiation arm, the fourth radiation assembly comprises a seventh radiation arm and an eighth radiation arm, and the number of the second through holes and the number of the second connecting pieces are multiple;

the fifth radiating arm and the sixth radiating arm are both connected to the first feeding point, a third U-shaped slot is formed between the fifth radiating arm and the sixth radiating arm, the seventh radiating arm and the eighth radiating arm are both connected to the second feeding point, a fourth U-shaped slot is formed between the seventh radiating arm and the eighth radiating arm, the openings of the third U-shaped slot and the fourth U-shaped slot face the same direction, the second connecting piece is inserted into the second through hole, two ends of part of the second connecting piece are connected to the fifth radiating arm and the seventh radiating arm respectively, and two ends of part of the second connecting piece are connected to the sixth radiating arm and the eighth radiating arm respectively.

6. The antenna of claim 5,

the first radiation module further comprises a fifth radiation component, the second radiation module further comprises a sixth radiation component, the substrate is provided with a third through hole, and the connection module further comprises a third connecting piece;

the fifth radiation component is connected to the first feeding point, the fifth radiation component is arranged in the third U-shaped groove, the sixth radiation component is connected to the second feeding point, the sixth radiation component is arranged in the fourth U-shaped groove, the third connecting piece is connected to the third through hole in an inserted mode, two ends of the third connecting piece are connected to the fifth radiation component and the sixth radiation component respectively, and the fifth radiation component and the sixth radiation component are used for receiving wireless signals in a third frequency range together.

7. The antenna of claim 6,

the fifth radiation component comprises a ninth radiation arm and a tenth radiation arm, the sixth radiation component comprises an eleventh radiation arm and a twelfth radiation arm, and the number of the third through holes and the number of the third connecting pieces are multiple;

the ninth radiating arm and the tenth radiating arm are both connected to the first feeding point, a fifth U-shaped groove is formed between the ninth radiating arm and the tenth radiating arm, the eleventh radiating arm and the twelfth radiating arm are both connected to the second feeding point, a sixth U-shaped groove is formed between the eleventh radiating arm and the twelfth radiating arm, the openings of the fifth U-shaped groove and the sixth U-shaped groove face the same direction, a third connecting piece is inserted into a third through hole, two ends of part of the third connecting piece are respectively connected to the ninth radiating arm and the eleventh radiating arm, and two ends of part of the third connecting piece are respectively connected to the tenth radiating arm and the twelfth radiating arm.

8. The antenna of claim 7,

the ninth radiating arm comprises a first fixing part, a first connecting part and a first extending part, and the tenth radiating arm comprises a second fixing part, a second connecting part and a second extending part;

one end of the first fixing portion is connected to the first feeding point, one end of the first connecting portion is connected to the other end of the first fixing portion, the other end of the first connecting portion extends in a direction away from the tenth radiating arm, one end of the first extending portion is connected to the other end of the first connecting portion, and the other end of the first extending portion extends in a direction close to the first feeding point;

one end of the second fixing portion is connected to the first feeding point, the first fixing portion and the second fixing portion jointly form the fifth U-shaped groove, one end of the second connecting portion is connected to the other end of the second fixing portion, the other end of the second connecting portion extends in the direction away from the ninth radiating arm, one end of the second extending portion is connected to the other end of the second connecting portion, and the other end of the second extending portion extends in the direction close to the first feeding point.

9. The antenna of claim 7,

the substrate is further provided with a first through groove, a second through groove, a third through groove and a fourth through groove, the first through groove is located between the first radiation arm and the fifth radiation arm, the second through groove is located between the second radiation arm and the sixth radiation arm, the third through groove is located between the fifth radiation arm and the ninth radiation arm, and the fourth through groove is located between the sixth radiation arm and the tenth radiation arm.

10. A drone, characterized in that it comprises an antenna according to any one of claims 1 to 9.

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