WO2023001037A1

WO2023001037A1 - Antenna, wireless signal processing device, and unmanned aerial vehicle

Info

Publication number: WO2023001037A1
Application number: PCT/CN2022/105445
Authority: WO
Inventors: 宋建平; 孙雪峰; 王建磊
Original assignee: 深圳市道通智能航空技术股份有限公司
Priority date: 2021-07-22
Filing date: 2022-07-13
Publication date: 2023-01-26
Also published as: CN113555680A

Abstract

The present application relates to the technical field of antennas, and in particular to an antenna, a wireless signal processing device, and an unmanned aerial vehicle. The antenna comprises: a substrate, the substrate comprising a substrate surface; a first radiation part and a second radiation part disposed on the substrate surface, a frequency band corresponding to the first radiation part being higher than a frequency band corresponding to the second radiation part; a feeder line electrically connected to the first radiation part and the second radiation part, separately; and a directing unit disposed on one side of the substrate surface, the directing unit having a first length in a first preset range, so that radiation of the first radiation part in a target direction is enhanced. The antenna can allow a high-band signal to shift to a target direction without interfering with a low-band signal of the second radiation part, thereby improving the directivity of the high-band signal.

Description

Antennas, wireless signal processing equipment and drones

This application claims the priority of the Chinese patent application with the application number 2021108330029 and the application title "antenna, wireless signal processing equipment and unmanned aerial vehicle" filed with the China Patent Office on July 22, 2021, the entire contents of which are incorporated herein by reference In this application.

【Technical field】

The present application relates to the technical field of antenna structures, in particular to an antenna, a wireless signal processing device and a drone.

【Background technique】

The antenna is a key component used to realize the transmission and reception of electromagnetic wave wireless signals. Its performance has a major impact on devices such as drones that rely on long-range wireless data transmission.

With the continuous development of electronic information technology and the continuous enrichment of equipment functions, many antennas are required to meet the needs of multiple different frequency bands. At present, some multi-frequency antennas such as dual-frequency antennas or tri-frequency antennas capable of operating in multiple frequency bands are provided to meet the needs of the use of drones and other similar devices.

However, in some application scenarios, the characteristics of transmission signals in different frequency bands may be different. People expect multi-frequency antennas to have different characteristics in different frequency bands to better adapt to the differences between different frequency bands and improve the performance of wireless signal transmission. This brings a very big challenge to the structural design of the antenna, and it is urgent to provide an antenna that can better meet actual needs.

【Content of invention】

The embodiment of the present application aims to provide an antenna, a wireless signal processing device and a drone, which can solve the problem that the existing multi-frequency antenna cannot well meet the needs of actual use.

In order to solve the above technical problem, the embodiment of the present application provides the following technical solution: an antenna.

The antenna includes: a substrate, the substrate includes a substrate surface; a first radiating part and a second radiating part arranged on the substrate surface; the frequency band corresponding to the first radiating part is higher than that corresponding to the second radiating part a frequency band; a feeder electrically connected to the first radiating part and the second radiating part; a directing unit arranged on one side of the substrate surface; the directing unit has a first preset range a length, so that the radiation of the first radiating part in the target direction is enhanced.

Optionally, both the first radiating portion and the second radiating portion are arranged symmetrically along the width direction of the substrate; the first radiating portion and the second radiating portion share at least a part of the vibrator unit.

Optionally, the vibrator unit shared by the first radiating portion and the second radiating portion includes: a first vibrator unit and a second vibrator unit arranged symmetrically along the width direction of the substrate;

The first vibrator unit and the second vibrator unit extend along the width direction of the substrate to form a first end and a second end separated from each other.

Optionally, the first radiating part further includes: a third vibrator unit and a fourth vibrator unit arranged symmetrically along the width direction of the substrate;

One end of the third oscillator unit is connected to the first end of the first oscillator unit, and one end of the fourth oscillator unit is connected to the first end of the second oscillator unit;

The third oscillator unit and the fourth oscillator unit extend along the length direction of the substrate and have a second length within a second preset range.

Optionally, the second preset range is greater than 1/8 of the wavelength of the electrical signal in the first frequency band and less than 3/4 of the wavelength of the electrical signal in the first frequency band.

Optionally, the second radiating part further includes: a fifth oscillator unit and a sixth oscillator unit arranged symmetrically along the width direction of the substrate;

One end of the fifth oscillator unit is connected to the second end of the first oscillator unit, and one end of the sixth oscillator unit is connected to the second end of the second oscillator unit;

The fifth dipole unit and the sixth dipole unit have a third length within a third preset range.

Optionally, the third preset range is greater than 1/8 of the wavelength of the electrical signal in the second frequency band and less than 3/4 of the wavelength of the electrical signal in the second frequency band.

Optionally, the fifth vibrator unit includes: a first portion extending along the length direction of the substrate, one end of the first portion connected to the second end of the first vibrator unit; A second part extending in a direction, the second part is formed by extending the other end of the first part away from the first vibrator unit.

Optionally, the first part is a serpentine structure provided with multiple bends;

The bend is formed by two conductor line segments extending in different directions. The conductor line segment has a preset first width and is formed by linearly extending along the extending direction on the surface of the substrate.

Optionally, the bend provided in the first part is a straight line corner; the straight line corner is formed by the intersection of the two conductor line segments forming the bend.

Optionally, the bend provided in the first part is an arc corner; the arc corner is formed by an arc segment whose two ends are respectively connected to the two conductor line segments forming the bend, and the arc segment has The default arc.

Optionally, the first part is a linear structure formed by a conductor line segment extending linearly along the length direction of the substrate; the conductor line segment has a preset second width.

Optionally, the conductor line segment extends to the edge of the substrate; the substrate has a preset substrate length, so that the fifth vibrator unit has a third length within a third preset range.

Optionally, the surface of the substrate includes: a first side and a second side symmetrical along the length direction of the substrate;

The distance between the first side and the first radiating portion is smaller than the distance between the first side and the second radiating portion;

The distance between the second side and the first radiating portion is greater than the distance between the second side and the second radiating portion.

Optionally, the guiding unit is disposed on the first side or the second side.

Optionally, the guiding unit includes: a conductor line segment extending along the length direction of the substrate to the first length; the conductor line segment is disposed close to the first side or the second side.

Optionally, the first preset range is greater than 1/4 of the wavelength of the electrical signal in the first frequency band and less than 1/2 of the wavelength of the electrical signal in the second frequency band.

Optionally, the first frequency band is a 5.8GHz frequency band, and the second frequency band is a 2.4GHz frequency band.

Optionally, the antenna further includes: a pair of connection line segments arranged on the back of the substrate, the back of the substrate being the bottom surface of the substrate opposite to the surface of the substrate;

The pair of connection line segments are respectively electrically connected to the first vibrator unit and the second vibrator unit;

The feeder is electrically connected to the first dipole unit and the second dipole unit respectively through the connection line segment.

Optionally, two via connection lines passing through the substrate; the substrate is provided with via holes for the via connection lines to pass through, through the surface of the substrate and the back of the substrate;

The two connection line segments respectively pass through the two via hole connection lines to establish electrical connection with the first dipole unit and the second dipole unit.

Optionally, the feeder is a coaxial line; the inner conductor of the coaxial line is electrically connected to the first vibrator unit through the connecting line segment, and the outer conductor of the coaxial line is connected to the first vibrator unit through the connecting line segment. The second vibrator unit is electrically connected.

In order to solve the above technical problem, the embodiment of the present application further provides the following technical solution: a wireless signal processing device. The wireless signal processing device includes: the above-mentioned antenna, used for sending or receiving wireless signals; a transmission path, used for loading information content into a radio frequency carrier signal, forming a wireless signal and sending it through the antenna.

In order to solve the above technical problems, the embodiment of the present application also provides the following technical solutions: a drone. The unmanned aerial vehicle includes: a fuselage with a landing gear; a motor mounted on the fuselage for providing flight power for the unmanned aerial vehicle; the above-mentioned antenna mounted on the Inside the landing gear.

The antenna in the embodiment of the present application has a directing unit with a suitable length, which can shift the high-frequency signal to the target direction without causing interference to the low-frequency signal of the second radiating part, and improve the directivity of the high-frequency signal. The antenna is a dual-band antenna with high-frequency directional and low-frequency omnidirectional, which can better meet the needs of specific usage scenarios.

【Description of drawings】

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplifications do not constitute a limitation to the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the drawings in the drawings are not limited to scale.

FIG. 1 is a schematic structural diagram of an antenna provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an antenna provided by another embodiment of the present application;

FIG. 3 is a schematic diagram of the back side of the substrate of the antenna provided by the embodiment of the present application;

FIG. 4 is a schematic diagram of the connection structure between the feeder and the radiation part provided by the embodiment of the present application;

Fig. 5 is a schematic structural diagram of the radiation section provided by the embodiment of the present application;

FIG. 6 is a schematic structural diagram of a radiation section provided by another embodiment of the present application;

FIG. 7 is a schematic diagram of S parameters of the antenna provided by the embodiment of the present application;

FIG. 8 is a low-frequency pattern of the antenna provided in the embodiment of the present application in the horizontal direction (direction H);

FIG. 9 is a high-frequency pattern of the antenna provided in the embodiment of the present application in the horizontal direction (direction H);

FIG. 10 is a schematic diagram of a wireless signal processing device provided in an embodiment of the present application;

Fig. 11 is a schematic diagram of the drone provided by the embodiment of the present application.

【detailed description】

In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is said to be "fixed" to another element, it may be directly on the other element, or there may be one or more intervening elements therebetween. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", and "bottom" used in this specification is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the The application and simplified description do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the application. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of this application. The terms used in the description of the present application are only for the purpose of describing specific embodiments, and are not used to limit the present application. The term "and/or" used in this specification includes any and all combinations of one or more of the associated listed items.

In addition, the technical features involved in different embodiments of the present application described below may be combined with each other as long as they do not constitute a conflict with each other.

FIG. 1 is a schematic structural diagram of an antenna provided by an embodiment of the present application. As shown in FIG. 1 , the antenna mainly includes a substrate 10 as the structural basis of the antenna, a radiation part ( 21 , 22 ) composed of oscillator units with specific structural shapes, a guiding unit 23 and a feeder 30 for transmitting signals.

Wherein, the substrate 10 is a relatively flat plate structure with two flat surfaces, the front and the back. It can be made of any type of material (such as plastic, foam) to form a non-conductive structure. Specifically, the substrate 10 can be selected to use FR-4 board.

According to the needs of the actual application scene of the antenna, etc., the substrate 10 may adopt a suitable shape (such as a long rectangle, a trapezoid) and a size. In this embodiment, the substrate 10 is an elongated rectangle as an example. Of course, those skilled in the art can also choose to use other suitable shapes or change the size of the substrate 10 according to actual needs.

The "radiation part" (21, 22) refers to a resonance unit for receiving or transmitting wireless signals of a specific frequency band. As the core of the entire antenna system, it usually consists of one or more identical or different dipole units with specific shapes and sizes.

These vibrator units can be fixed on the surface of the substrate 10 in any suitable form (such as patch type) and have conductor segments with specific sizes and shapes. It has a suitable length, width and routing form, and realizes receiving or transmitting wireless signals belonging to a specific frequency band through the principle of electromagnetic induction. In this embodiment, the antenna may include a first radiating part 21 and a second radiating part 22, which respectively correspond to wireless signals of different frequency bands, so as to realize the use requirement of a dual-frequency antenna.

Wherein, the first radiating part 21 may correspond to a high-frequency signal, while the second radiating part 22 may correspond to a low-frequency signal. The above "low frequency" and "high frequency" are a set of relative concepts, which are only used to indicate that the frequency band corresponding to the first radiating part 21 is higher than that of the second radiating part 22, and are not used to limit the first radiating part 21 and the second radiating part 22 Specific corresponding frequency band. For example, the first radiation part 21 may correspond to a 5.8GHz frequency band, while the second radiation part 22 may correspond to a lower frequency 2.4GHz frequency band. For simplicity of presentation, in the following description, the higher frequency band corresponding to the first radiation part is called "first frequency band"; the lower frequency band corresponding to the second radiation part is called "second frequency band".

In some embodiments, both the first radiating portion 21 and the second radiating portion 22 adopt a symmetrical structural design along the width direction of the substrate 10 , and both share a part of the vibrator unit.

Wherein, the “width direction” refers to the direction to which the axis of symmetry corresponding to the shorter side of the substrate 10 points. In the elongated substrate 10 , there is also another direction pointed by another axis of symmetry corresponding to the longer side of the substrate, which may be referred to as a “length direction”. For example, in the long rectangular substrate shown in FIG. 1 , the width direction is the direction in which the axis of symmetry parallel to the shorter side of the substrate points. The length direction is the direction in which the axis of symmetry parallel to the longer side of the substrate points.

Certainly, the substrate 10 may also adopt an asymmetric design. The above "width direction" and "length direction" are only used to illustrate that the projected length of the substrate in the "length direction" is significantly greater than that in the "width direction", and are not used to limit the specific shape of the substrate 10 .

The guiding unit 23 is a device for guiding the radiation energy of the antenna. It can be implemented in any suitable structural form, for example, as shown in FIG. 1 and FIG. 2 , a conductor line segment (microstrip line) of a certain length extends along the length direction of the substrate. It is set on one side of the substrate surface, which can concentrate or enhance the radiation energy of the antenna toward the target direction, so that the antenna has strong directivity.

Here, "sides of the substrate surface" refers to two sides of the substrate that pass through in the width direction of the substrate. The “target direction” refers to the direction in which the radiation energy of the first radiation part 21 is directed by the directing unit 23 to concentrate. Its specific direction can be determined by providing a suitable guiding unit 23 .

In some embodiments, as shown in FIG. 1 , the guiding unit 23 and the first radiation portion 21 may be disposed on the same side of the substrate. In some other embodiments, as shown in FIG. 2 , the guiding unit 23 may also be disposed on an opposite side of the first radiation portion 21 . For the sake of simplicity, the installation position of the guiding unit 23 shown in FIG. 1 may be referred to as “first side”, and the installation position of the guiding unit 23 shown in FIG. 2 may be called “second side”.

Wherein, the first side is the side of the substrate close to the first radiating part, and the distance between it and the first radiating part is smaller than the distance between it and the second radiating part. The second side is closer to the first radiating portion, and the distance between it and the first radiating portion is greater than the distance between it and the second radiating portion.

Of course, in addition to the directing unit 23 can make the direction of the first radiation part 21 produce a corresponding shift to achieve the effect of improving the directivity of the high-frequency signal, it is also necessary to avoid damage to the omnidirectionality of the second radiation part 22 as much as possible. negative impacts. Specifically, the required guiding effect can be achieved by controlling the length of the guiding unit 23 (that is, it will not interfere with the second frequency band while having a significant impact on the radiated energy of the first frequency band).

In order to distinguish it from the dimension lengths of other oscillator units in the radiation part, the length of the directing unit 23 is represented by “first length”. The first length is a value within a first preset range. The first preset range may be determined according to the size and length of the first radiating portion and the second radiating portion (or their specific corresponding frequency bands).

In some embodiments, the first preset range is greater than 1/4 of the wavelength of the electrical signal in the first frequency band and less than 1/2 of the wavelength of the electrical signal in the second frequency band.

The feeder 30 is a signal transmission path connecting the "radiating part" with other signal processing systems. It usually uses a coaxial cable or similar wire with good shielding and signal transmission performance to transmit the wireless signal received or transmitted by the "radiating part".

In some embodiments, as shown in FIG. 3 , the feeder 30 may run on the backside of the substrate. It extends outward from the connection node to the back of the substrate to connect to other external devices.

Here, "substrate back surface" refers to the bottom surface opposite to the substrate surface. In other words, the radiation part ( 21 , 22 ) of the antenna and the guiding unit 23 are arranged on the front of the substrate 10 , while the feeder 30 runs on the back of the substrate 10 . The connection node can be arranged on a section of microstrip line or similar conductor on the back of the substrate to establish an electrical connection between the radiation part and the feeder.

One of the advantages of the antenna provided by the embodiment of the present application is that the directing unit with a suitable length can be tightly coupled with the first radiating part without causing interference to the low-frequency signal of the second radiating part, so that the high The frequency band signal is shifted to the target direction to improve the directionality of the high frequency band signal, thereby realizing a dual-band antenna with high frequency band orientation and low band omnidirectional, which can better adapt to the needs of specific usage scenarios.

In the process of implementing the present application, it is surprisingly found that the first radiating part 21 and the second radiating part 22 adopting a unique layout or structural form can provide better dual-band antenna performance.

In some embodiments, as shown in FIG. 1 and FIG. 2 , the vibrator unit shared by the first radiating portion 21 and the second radiating portion 22 may include: a first vibrator unit 201 and a second vibrator unit 202 .

Wherein, the above-mentioned first vibrator unit 201 and the second vibrator unit 202 both adopt symmetrical shapes, and are arranged symmetrically along the axis A of the substrate (ie, the width direction). Moreover, both the first vibrator unit 201 and the second vibrator unit 202 extend along the width direction of the substrate, forming a section of microstrip line shorter than the width of the substrate on the surface of the substrate. In this embodiment, the two ends of the microstrip line are called "first end" and "second end" respectively.

In some embodiments, as shown in FIG. 3 , the feeder 30 may be electrically connected to the common first dipole unit 201 and the second dipole unit 202 respectively through two connecting wire segments 40 arranged on the backside of the substrate. Thus, the connection between the feeder 30 and the first radiating part 21 and the second radiating part 22 is realized.

Specifically, as shown in FIG. 4 , the connecting line segment 40 may be a microstrip line or similar conductor line segment with a certain length arranged on the back of the substrate. The feeder 30 maintains electrical connection with the two connection line segments 40 respectively through a suitable connection method.

For example, when a coaxial cable is used as the feeder 30 , the inner conductor of the coaxial cable can be electrically connected to the first vibrator unit through a connecting line segment, and the outer conductor of the coaxial cable can be electrically connected to the second oscillator unit through another connecting line segment.

Please continue to refer to FIG. 4 , the two connection line segments 40 on the back of the substrate can be arranged in a suitable position (such as a position opposite to the first vibrator unit and the second vibrator unit) and pass through the via hole connection line 50 passing through the substrate, respectively. It is electrically connected with the first vibrator unit 201 and the second vibrator unit 202 located on the surface of the substrate.

Wherein, "via hole" refers to a hole opened on the substrate 10 and penetrating through the back surface of the substrate and the surface of the substrate. It can allow the connection line 50 to pass through, so as to establish an electrical connection between the connection line segments respectively located on the back surface of the substrate and the surface of the substrate and the common vibrator unit.

Please continue to refer to FIG. 1 , the first radiating part 21 may further include a third oscillator unit 213 and a fourth oscillator unit 214 in addition to the shared oscillator unit. The second radiation part 22 may further include a third oscillator unit 223 and a fourth oscillator unit 224 in addition to the shared oscillator unit.

Wherein, the above-mentioned third vibrator unit 213 and fourth vibrator unit 214 are also arranged symmetrically along the axis A of the substrate (ie, the width direction), so as to meet the requirement of symmetrical arrangement of the first radiating portion 21 . Moreover, the third dipole unit 213 and the fourth dipole unit 214 have different extension directions from the common dipole unit. It starts from the first end of the shared vibrator unit and extends along the length direction of the substrate for a certain length so as to form an “L”-shaped vibrator structure with the shared vibrator unit.

Specifically, the third dipole unit 213 and the fourth dipole unit 214 can be understood as dipole arm parts, which need to have an appropriate length to achieve sufficient antenna performance. In this embodiment, the dimension length of the third dipole unit 213 or the fourth dipole unit 214 may be referred to as a “second length”. The second length can be set based on the electrical signal wavelength of the first frequency band. For example, the second length can be controlled within a second preset range. The second preset range may be: greater than 1/8 of the wavelength of the electrical signal in the first frequency band and less than 3/4 of the wavelength of the electrical signal in the first frequency band.

Similarly, the fifth dipole unit 223 and the sixth dipole unit 224 also have a symmetrical structure along the width direction. Moreover, the fifth vibrator unit 223 and the sixth vibrator unit 224 extend from the other end (second end) of the common vibrator unit to form a vibrator arm.

Specifically, the fifth dipole unit 223 and the sixth dipole unit 224 also need to be set with appropriate lengths to meet the performance of the second radiating part in the low frequency band. In this embodiment, the dimension length of the fifth dipole unit 223 or the sixth dipole unit 224 may be referred to as a “third length”.

The third length can be determined according to the wavelength of the electrical signal in the second frequency band. For example, the third length can be controlled within a preset third range. The second range may be: greater than 1/8 of the wavelength of the electrical signal in the second frequency band and less than 3/4 of the wavelength of the electrical signal in the second frequency band.

It should be noted that the fifth dipole unit 223 and the sixth dipole unit 224 may adopt various suitable shapes and structures to obtain suitable low-frequency antenna performance, and are not limited to the shape and structure shown in FIG. 1 . For example, the shape structure shown in FIG. 5 or the shape structure shown in FIG. 6 .

Because the sixth dipole unit 224 has a symmetrical structure with the fifth dipole unit 223 . To avoid repeated descriptions, the structure of the fifth oscillator unit and the sixth oscillator unit will be described and introduced in detail below by taking the fifth oscillator unit 223 as an example.

In some embodiments, as shown in FIG. 5 , the fifth vibrator unit 223 has a corner and can be roughly divided into a first portion 223a extending along the length direction and a second portion 223b extending along the width direction.

Wherein, one end of the first portion 223 a is connected to the second end of the first vibrator unit 201 . When the first portion extends along the length direction to approach the edge of the substrate 10 , it is bent to form a second portion 223b extending along the width direction for a certain distance.

Please continue to refer to FIG. 5 , in both the first portion 223a and the second portion 223b, a plurality of bends 223c can be provided. Each bend 223c can be considered to be formed by two conductor segments disposed on the surface of the substrate and extending in different directions. Specifically, these conductor line segments may be microstrip lines with a preset width. The preset width is an empirical value, which can be set by technicians according to actual needs.

In the antenna shown in FIG. 5 , a plurality of continuous bends 223c make the first part 223a (or the entire fifth dipole unit) form a curved structure similar to a "serpentine". One of the advantages of such a serpentine bending structure is that a longer fifth vibrator unit can be implemented on a shorter substrate 10 , which facilitates miniaturization of the substrate 10 .

In other embodiments, as shown in FIG. 6 , the fifth vibrator unit 223 can also be roughly divided into a first portion 223a extending along the length direction and a second portion 223b extending along the width direction.

Wherein, the difference from the antenna shown in FIG. 5 is that in the antenna shown in FIG. 6 , the first part 223 a adopts a linear structure extending along a straight line instead of a serpentine bending structure.

Please continue to refer to FIG. 6 , the conductor segment forming the first portion 223 a may be a section of microstrip line parallel to the length direction of the substrate and having a predetermined second width. Specifically, when the first portion 223a adopts a linear structure, it may extend from the second end of the first vibrator unit to the edge of the substrate. It can be understood that the length of the first portion 223 a mainly depends on the length of the substrate 10 .

Therefore, technicians can adjust the length of the substrate 10 and the wiring area of the fifth dipole unit according to the actual situation so that the fifth dipole unit can have a length equivalent to the third length, so as to meet the low-frequency antenna performance required by use.

In still some embodiments, as shown in FIG. 1 , the main difference between it and the antenna shown in FIG. 5 is that the bend 223c of the fifth dipole unit adopts a circular arc corner (in the antenna shown in FIG. 5 , the first part 223a The bend 223c is a straight line corner).

Wherein, the above "straight corner" refers to a corner formed by the direct intersection of two conductor line segments forming a bend. The "arc corner" refers to a corner formed by connecting and transitioning through an arc between two bent conductor segments.

In other words, compared to the arc corner shown in FIG. 1 , the chamfer design is canceled in the corner shown in FIG. 6 . In other words, on the basis of the straight line corner shown in Fig. 6, the chamfering design is performed to obtain the arc corner shown in Fig. 1 .

In the fifth oscillator unit provided by the embodiment of the present application, one of the advantages of chamfering the corners of straight lines is that the discontinuity at the corners can be reduced, and the radiation performance of the oscillator unit (ie, microstrip line) can be improved.

It should be noted that the antennas shown in FIG. 1 to FIG. 6 are for illustrative purposes only, and those skilled in the art may add, adjust, replace or omit one or more functional components according to actual needs, and It is not limited to what is shown in Fig. 1 to Fig. 6 . The technical features involved in the antenna embodiments shown in FIGS. 1 to 6 can be combined with each other as long as there is no conflict with each other, and can be independently applied in different embodiments as long as there is no dependence on each other.

FIG. 7 is a schematic diagram of S parameters of the antenna provided by the embodiment of the present application. As shown in FIG. 7 , the antenna provided by the above embodiment can work at 2.4GHz-2.5GHz (low frequency band) and 5.31GHz-6GHz (high frequency band). Therefore, coverage of the two frequency bands of 2.4GHz and 5.8GHz can be achieved.

FIG. 8 and FIG. 9 are antenna pattern diagrams of the antenna provided in the embodiment of the present application in the low frequency band and the high frequency band, respectively. As shown in FIG. 8 , the antenna provided by the embodiment of the present application has the characteristics of good omnidirectionality in the low frequency band and no defects in specific directions. As shown in FIG. 9 , the radiation pattern of the antenna provided in the embodiment of the present application on the high-frequency band is shifted along the target direction, and has the characteristic of high-frequency orientation.

Based on the antennas provided in the foregoing embodiments, the embodiments of the present application further provide a wireless signal processing device. This embodiment does not limit the specific implementation of the wireless signal processing device, which may be any type or type of electronic device used to transmit and receive wireless signals, such as remote controllers, smart terminals, wearable devices or mobile vehicles. signal transceiver.

FIG. 10 is a schematic structural diagram of a wireless signal processing device provided by an embodiment of the present application. As shown in FIG. 10 , the wireless signal processing device includes: an antenna 100 , a transmitting path 200 and a receiving path 300 . The antenna 100 is connected to the receiving path 200 or the transmitting path 300 through a feeder, so as to realize mutual signal transmission.

Wherein, the antenna 100 may specifically be the antenna described in one or more embodiments above, which is determined by the specific implementation of the wireless signal processing device. For example, the antenna 100 may be an omnidirectional antenna covering two frequency bands.

The transmission path 200 is a functional module used to load the information content to be transmitted to the carrier signal to form a wireless signal. Specifically, it can be any type of electronic system formed by a combination of one or more electronic components that can generate wireless signals, such as a radio frequency chip.

The receiving channel 300 is an electronic system for analyzing the wireless signal received by the antenna to obtain the information contained in the wireless signal, such as a specific type of decoding chip. It has an opposite direction of information flow to the transmitting channel 200, and is a functional module for completing information acquisition.

In some embodiments, one of the transmitting path 200 and the receiving path 300 may be omitted based on the specific implementation of the wireless signal processing device. For example, when the wireless signal processing device is a remote controller, the receiving path 300 can be omitted, and only the transmitting path 200 is required.

The embodiment of the present application further provides a drone using the antenna provided in the above embodiment. FIG. 11 is a schematic diagram of an unmanned aerial vehicle using the above-mentioned antenna provided by an embodiment of the present application. As shown in FIG. 11 , the drone may include: a fuselage 400 , a power assembly 500 , a battery 600 and an antenna.

Wherein, the fuselage 400 is the main structure of the drone, which can be made of any suitable material and has a structure and size that meet the needs of use. The fuselage 400 can be provided with various functional components such as the arm 410 , the landing gear 420 and the camera 430 . Of course, those skilled in the art can also add or omit one or more functional components according to actual needs, for example, a corresponding pan/tilt 440 can be added to the camera 430 .

The power assembly 500 is installed on the fuselage 400 for providing flight power for the drone. The power assembly can be provided with one or more, arranged at the corresponding position of the fuselage 400 so as to provide sufficient flight power and attitude control capability for the UAV.

The battery 600 is mounted on the fuselage 400, and as a device for storing energy, it can provide electric energy for devices on the drone such as the power assembly 500. Of course, other types of energy storage devices could also be used to power the drone.

The antenna is installed and housed in any one of the landing gears 420 . The base plate 10 of the antenna may have or form a shape suitable for the receiving space formed inside the landing gear 420 , so as to be stably arranged in the landing gear 420 .

The landing gear 420 with a built-in antenna is used as a part of the wireless signal transceiving device to receive remote control operation instructions from the remote control or to feed back relevant data information (such as captured images, UAV itself) to the remote control or other smart terminals. running status parameters).

Of course, based on the UAV application scenarios provided in the above embodiments, those skilled in the art can also apply the antennas provided in the above embodiments to other similar unmanned mobile vehicles without being limited to the UAV shown in Figure 11 .

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; under the thinking of the present application, the above embodiments or technical features in different embodiments can also be combined, The steps can be performed in any order, and there are many other variations of the different aspects of the application as described above, which have not been presented in detail for the sake of brevity; although the application has been described in detail with reference to the preceding examples, those of ordinary skill in the art The skilled person should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the implementation of the present application. The scope of technical solutions.

Claims

An antenna, characterized in that it comprises:

a substrate comprising a substrate surface;

The first radiation part and the second radiation part arranged on the surface of the substrate; the first radiation part corresponds to the first frequency band, and the second radiation part corresponds to the second frequency band; the frequency of the first frequency band is higher than said second frequency band;

a feeder electrically connected to the first radiating part and the second radiating part;

A guiding unit disposed on a side of the substrate surface; the guiding unit has a first length within a first preset range, so as to enhance the radiation of the first radiation portion in a target direction.
The antenna according to claim 1, wherein the first radiating part and the second radiating part are arranged symmetrically along the width direction of the substrate;

The first radiating part and the second radiating part share at least a part of the vibrator unit.
The antenna according to claim 2, wherein the oscillator unit shared by the first radiating part and the second radiating part comprises: a first oscillator unit and a second oscillator arranged symmetrically along the width direction of the substrate unit;

The first vibrator unit and the second vibrator unit extend along the width direction of the substrate to form a first end and a second end separated from each other.
The antenna according to claim 3, wherein the first radiating part further comprises: a third dipole unit and a fourth dipole unit arranged symmetrically along the width direction of the substrate;

One end of the third oscillator unit is connected to the first end of the first oscillator unit, and one end of the fourth oscillator unit is connected to the first end of the second oscillator unit;

The third oscillator unit and the fourth oscillator unit extend along the length direction of the substrate and have a second length within a second preset range.
The antenna according to claim 4, wherein the second preset range is greater than 1/8 of the wavelength of the electrical signal in the first frequency band and less than 3 times the wavelength of the electrical signal in the first frequency band /4.
The antenna according to claim 3, wherein the second radiating part further comprises: a fifth dipole unit and a sixth dipole unit arranged symmetrically along the width direction of the substrate;

One end of the fifth oscillator unit is connected to the second end of the first oscillator unit, and one end of the sixth oscillator unit is connected to the second end of the second oscillator unit;

The fifth dipole unit and the sixth dipole unit have a third length within a third preset range.
The antenna according to claim 6, wherein the third preset range is greater than 1/8 of the wavelength of the electrical signal in the second frequency band and less than 3 times the wavelength of the electrical signal in the second frequency band /4.
The antenna according to claim 6, wherein the fifth dipole unit comprises:

a first part extending along the length direction of the substrate, one end of the first part is connected to the second end of the first vibrator unit;

A second portion extending along the width direction of the substrate, the second portion is formed by extending the other end of the first portion away from the first vibrator unit.
The antenna according to claim 8, wherein the first part and/or the first part is a serpentine structure provided with multiple bends;

The bend is formed by two conductor segments extending in different directions, and the conductor segments have a preset first width.
The antenna according to claim 9, wherein the bend is a straight line corner; the straight line corner is formed by the intersection of two conductor line segments forming the bend.
The antenna according to claim 9, wherein the bend is a circular arc corner; the circular arc corner is formed by circular arc segments whose two ends are respectively connected to the two conductor line segments forming the bend, so The arc segment has a preset radian.
The antenna according to claim 8, wherein the first part is a linear structure formed by a conductor line segment extending linearly along the length direction of the substrate; the conductor line segment has a preset second width.
The antenna according to claim 12, wherein the conductor line segment extends to the edge of the substrate; the substrate has a preset substrate length, so that the fifth vibrator unit has a third preset range within the third length.
The antenna according to claim 1, wherein the surface of the substrate comprises: a first side and a second side symmetrical along the length direction of the substrate;

The distance between the first side and the first radiating portion is smaller than the distance between the first side and the second radiating portion;

The distance between the second side and the first radiating portion is greater than the distance between the second side and the second radiating portion.
The antenna according to claim 14, wherein the directing unit is arranged on the first side or the second side.
The antenna according to claim 14, wherein the directing unit comprises: a conductor line segment extending linearly along the length direction of the substrate to the first length;

The conductor line segment is arranged close to the first side or the second side.
The antenna according to any one of claims 1-16, wherein the first preset range is: greater than 1/4 of the wavelength of the electrical signal in the first frequency band and less than the wavelength of the electrical signal in the second frequency band 1/2 of the wavelength of the electrical signal.
The antenna according to any one of claims 1-16, wherein the first frequency band is a 5.8GHz frequency band, and the second frequency band is a 2.4GHz frequency band.
The antenna according to any one of claims 1-16, further comprising:

Two connecting line segments arranged on the back of the substrate, the back of the substrate is the bottom surface of the substrate opposite to the surface of the substrate;

The two connecting line segments are respectively electrically connected to the first vibrator unit and the second vibrator unit;

The feeder is electrically connected to the first oscillator unit and the second oscillator unit respectively through the two connecting line segments.
The antenna according to claim 19, further comprising:

Two via connection lines passing through the substrate; the substrate is provided with a via hole for the via connection line to pass through, through the surface of the substrate and the back of the substrate;

The two connection line segments respectively pass through the two via hole connection lines to establish electrical connection with the first dipole unit and the second dipole unit.
The antenna according to claim 19, characterized in that, the feeder is a coaxial line; the inner conductor of the coaxial line is electrically connected to the first vibrator unit through the connecting line segment, and the inner conductor of the coaxial line is electrically connected to the first dipole unit. The outer conductor is electrically connected to the second vibrator unit through the connecting line segment.
A wireless signal processing device, characterized in that it includes:

The antenna according to any one of claims 1-21, used for sending or receiving wireless signals;

The transmission path is used to load the information content into the radio frequency carrier signal to form a wireless signal and send it through the antenna.
A kind of unmanned aerial vehicle, is characterized in that, comprises:

a fuselage having landing gear on the fuselage;

a power assembly, the power assembly is mounted on the fuselage for providing flight power for the drone;

The antenna according to any one of claims 1-21, installed in the landing gear.