Antennas, wireless signal processing equipment and drones

Abstract

The present invention relates to the field of antenna technology, and in particular to an antenna, a wireless signal processing device and an unmanned aerial vehicle. The antenna comprises: a substrate having a flat substrate surface; a first radiating portion and a second radiating portion arranged on the substrate surface, the first radiating portion and the second radiating portion being symmetrical along the axis of the substrate and corresponding to different frequency bands; a feeder connected to the first radiating portion and the second radiating portion respectively; a pad having a preset size, the pad being arranged between the feeder and the substrate surface so that the feeder maintains a distance from the substrate surface. The antenna adopts reasonable wiring and structural design, and can meet the use requirements of a multi-frequency antenna on a substrate with a smaller volume. Moreover, the pad structure can increase the distance between the feeder and the substrate, thereby avoiding interference of the feeder with the resonant wave when transmitting signals.

Description

[Technical field]

[0001] The present invention relates to the technical field of antenna structures, and in particular to an antenna, a wireless signal processing device and a drone. [Background technology]

[0002] Antennas are key components for transmitting and receiving electromagnetic wave wireless signals. Their performance has a significant impact on equipment such as drones that require long-distance wireless data transmission. With the continuous development of electronic information technology, the requirements for wireless transmission performance are becoming increasingly higher, which brings great challenges to the structural design of antennas.

[0003] In order to meet the needs of larger bandwidth and cover more frequency bands, technicians often need to use antennas with complex structural designs. However, these antennas with complex structural designs are difficult to miniaturize and difficult to apply to small products such as drones and remote controls that are sensitive to size and structure. [Summary of the invention]

[0004] The embodiments of the present invention aim to provide an antenna, a wireless signal processing device and a drone, which can solve the contradiction between the existing complex antenna structure and the miniaturization of the antenna size.

[0005] In order to solve the above technical problems, the embodiment of the present invention provides the following technical solution: an antenna. The antenna comprises:

[0006] a substrate having a flat substrate surface;

[0007] A first radiating portion and a second radiating portion are arranged on the surface of the substrate, wherein the first radiating portion and the second radiating portion are symmetrical along the axis of the substrate and correspond to different frequency bands;

[0008] Feeders respectively connected to the first radiating portion and the second radiating portion;

[0009] A pad body with a preset size is arranged between the feed line and the substrate surface so that the feed line maintains a distance from the substrate surface.

[0010] Optionally, the pad body is made of a non-conductive material, and the non-conductive material includes foam, plastic and wood.

[0011] Optionally, the cushion body is a foam layer, a wood frame or a plastic frame with a preset thickness.

[0012] Optionally, a fixing method of the feeder and the pad body on the substrate includes: bundling fixation or gluing fixation.

[0013] Optionally, the first radiating portion includes:

[0014] A first vibrator symmetrical along the axis of the substrate, wherein the first vibrator has multiple bends to form two first openings facing the same direction and a second opening facing the opposite direction of the first opening;

[0015] A second vibrator is arranged along an extending direction of the first opening, wherein the second vibrator comprises:

[0016] A vibrating body connected to the feeder; the vibrating body is connected to the first vibrator;

[0017] bending portions respectively arranged at two ends of the vibrating body; and

[0018] A pair of vibration arms are formed by extending the bent portion to a predetermined length.

[0019] Optionally, the antenna further includes: a pair of air-avoiding grooves; the air-avoiding grooves are symmetrically arranged along the axis of the substrate and are located inside the first oscillator.

[0020] Optionally, the air avoidance groove is arranged between two sections of longitudinal microstrip lines forming the first opening;

[0021] The first vibrator is composed of a plurality of longitudinal microstrip lines extending along the axial direction of the substrate and a plurality of transverse microstrip lines extending along the radial direction of the substrate.

[0022] Optionally, the second radiating portion includes:

[0023] a third vibrator located at a head portion of the substrate surface, wherein the head portion of the substrate surface is an end away from an extension direction of the feed line;

[0024] A fourth dipole is connected between the third dipole and the feed line.

[0025] Optionally, the third vibrator includes:

[0026] A vibrator head having a second width, wherein the vibrator head is located at the head of the substrate surface;

[0027] The vibrator connecting portion is located between the vibrator head and the fourth vibrator, the fourth vibrator has a first width smaller than the second width, and the vibrator connecting portion has a transition structure that reduces from the second width to the first width.

[0028] Optionally, the first radiating portion corresponds to a first frequency band, and the second radiating portion corresponds to a second frequency band having a frequency higher than the first frequency band;

[0029] The total length of the first vibrator and the second vibrator is between 1 / 8 and 3 / 4 of the resonance wavelength of the first frequency band;

[0030] The total length of the third vibrator and the fourth vibrator is between 1 / 8 and 3 / 4 of the resonance wavelength of the second frequency band.

[0031] Optionally, the first frequency band is a 900 MHz frequency band, and the second frequency band is a 2.4 GHz frequency band.

[0032] Optionally, the feed line is a coaxial line; the inner conductor of the coaxial line is connected to the fourth vibrator, and the outer conductor of the coaxial line is connected to the second vibrator.

[0033] To solve the above technical problems, the embodiments of the present invention also provide the following technical solutions: a wireless signal processing device. The wireless signal processing device includes: the antenna as described above, used to send or receive wireless signals; a transmission path, used to load information content into a radio frequency carrier signal, form a wireless signal and send it through the antenna.

[0034] To solve the above technical problems, the embodiments of the present invention also provide the following technical solutions: A drone comprising: a fuselage, the fuselage having a landing gear; a motor installed on the fuselage for providing flight power for the drone; and the antenna as described above installed in the landing gear.

[0035] The antenna of the embodiment of the present invention adopts reasonable wiring and structural design, and can realize the use requirements of multi-band antenna on a small substrate. Moreover, the pad structure can increase the distance between the feeder and the substrate, avoiding the interference of the feeder on the resonant wave when transmitting the signal.

Brief Description of the Drawings

[0036] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0037] Figure 1 A schematic diagram of the structure of an antenna provided in an embodiment of the present invention;

[0038] Figure 2 A side view of an antenna provided by an embodiment of the present invention;

[0039] Figure 3 A schematic structural diagram of a first radiation unit provided in an embodiment of the present invention;

[0040] Figure 4 A schematic diagram of the S parameters of the antenna provided in an embodiment of the present invention;

[0041] Figure 5 A low-frequency band radiation pattern of the antenna provided in an embodiment of the present invention in the horizontal direction (H direction);

[0042] Figure 6 A high frequency band radiation pattern of the antenna provided by an embodiment of the present invention in the horizontal direction (H direction);

[0043] Figure 7 A schematic diagram of a wireless signal processing device provided by an embodiment of the present invention;

[0044] Figure 8 A schematic diagram of an antenna structure provided by an embodiment of the present invention;

[0045] Fig. 9 A schematic diagram of a drone provided in an embodiment of the present invention. [Specific implementation method]

[0046] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "bottom" etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification and in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0048] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] Figure 1 The schematic diagram of the structure of the antenna provided by the embodiment of the present invention is shown in FIG. Figure 1 As shown, the antenna mainly includes a substrate 10 as the basis of the antenna structure, a radiation part (21, 22) arranged on the surface of the substrate and composed of a vibrator with a specific structural shape, a feeder 30 connected to the vibrator for transmitting signals, and a pad 40 with a preset size.

[0050] The substrate 10 may be a non-conductive structure made of any type of material (such as plastic, foam) and having a specific shape (such as a long rectangle, a trapezoid). It has a relatively flat shape and forms a flat surface. In this embodiment, for ease of description, the end of the substrate 10 along the extension direction of the feed line 30 close to the connection device is called the "root", and the other end opposite to the root of the substrate is called the "head".

[0051] The "radiating part" (21, 22) refers to a resonant unit for receiving or transmitting wireless signals of a specific frequency band, and is the core of the entire antenna system. It can usually be composed of one or more identical or different vibrators with a specific shape or structure. These vibrators can be conductors of specific size and shape fixed on the surface of the substrate 10 in any suitable form (such as patch type). It can receive or transmit wireless signals belonging to a specific frequency band through the principle of electromagnetic induction. In this embodiment, the antenna can be provided with a first radiating part 21 and a second radiating part 22, which correspond to wireless signals of different frequency bands respectively, to meet the use requirements of dual-band signals.

[0052] The first radiating portion 21 may correspond to a low-frequency signal, while the second radiating portion 22 may correspond to a high-frequency signal. The above-mentioned "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 portion 21 is lower than that of the second radiating portion 22, and are not used to limit the specific frequency bands corresponding to the first radiating portion 21 and the second radiating portion 22. For example, the first radiating portion 21 may correspond to a 900MHz frequency band, while the second radiating portion 22 may correspond to a higher frequency 2.4GHz frequency band.

[0053] The feeder 30 is a signal transmission path connecting the "radiating part" and other signal processing systems. It usually uses a coaxial line or similar wire with good shielding and signal transmission performance to transmit the wireless signal received or transmitted by the "radiating part".

[0054] The position where it establishes connection with the radiating part is usually located near the middle of the substrate surface. The feed line 30 needs to start from the connection point C located in the middle of the substrate and extend a certain length toward the root of the substrate until it leaves the substrate and connects with other signal processing systems. In other words, Figure 1 As shown, a portion of the feed line 30 passes through or runs on the surface of the substrate.

[0055] The pad 40 is a filling structure arranged between the feed line 30 and the substrate surface. It has a predetermined size and is placed under the feed line 30 so that the feed line 30 maintains a sufficient distance from the substrate surface. In this embodiment, "size" refers to a combination of multiple parameters related to the shape of the pad to characterize the external contour of the filling structure (such as thickness, width or length). The specific parameters included can be determined according to the actual selected shape structure of the pad 40 or the distance between the feed line 30 and the substrate surface to be reached (such as the distance between the feed line 30 and the substrate surface in the vertical direction).

[0056] The above-mentioned predetermined size is an empirical value and can be determined by a person skilled in the art according to actual needs. It only needs to ensure that the feed line 30 is kept at a sufficient distance from the substrate surface.

[0057] Specifically, the pad 40 can be made of any suitable type of non-conductive material, including but not limited to foam, plastic and wood. As described above, considering the different materials used to make the pad 40, a corresponding structure can also be used. For example, when foam is used, the pad 40 can be a foam layer with a certain thickness, and when wood or plastic is used, a wood frame or a plastic frame with a shape structure that matches the feeder 30 can be selected as the pad 40.

[0058] In order to avoid relative movement between the feeder (31, 32), the substrate 10 and the pad 40 during daily use of the antenna, the feeder (31, 32) can be fixed to the pad 40 by any suitable type of fixing method (such as gluing or bundling), so as to keep the substrate 10, the pad 40 and the feeder 30 fixed as a whole.

[0059] In some embodiments, Figure 2 As shown, the feeder 30 can be fixed on the pad 40 and the substrate 10 by a similar bundling and fixing method such as a cable tie 60. The cable tie 60 passes through the hole or the air-avoiding groove provided on the substrate 10 to bundle and fix the feeder 30, so as to keep the feeder 30 and the substrate 10 integrally fixed and prevent relative movement. Specifically, a suitable number of cable ties 60 can be provided according to the distance or length of the feeder 30 running on the substrate 10.

[0060] Of course, any other suitable type of fixing method may be selected according to actual needs, such as using an adhesive fixing method to fix the feeder 30 on the pad 40 and the substrate 10 by means of glue or tape.

[0061] The feed line 30 running on the substrate surface is fixed on the pad 40 to maintain a sufficient vertical distance from the substrate surface, so as to reduce the interference of the transmission signal of the feed line 30 on the radiation part located on the substrate surface.

[0062] The vertical distance between the feed line 30 and the substrate surface is an empirical value, which only needs to meet the use requirements. The technicians can predetermine the minimum standard or appropriate standard that the vertical distance between the feed line 30 and the substrate surface must meet according to the actual needs (such as performance indicators, experimental results), and then choose to use a pad with a corresponding size.

[0063] In the antenna structure provided in the embodiment of the present invention, a filling structure with a reasonable size is set between the feed line 30 and the surface of the substrate to raise the feed line 30 so as to ensure that the feed line 30 running on the substrate maintains a certain distance from the surface of the substrate. This can reduce the influence or interference of the feed line 30 on the resonant wave (such as the high-frequency signal or low-frequency signal corresponding to the above-mentioned radiation part) during the signal transmission process, which is beneficial to improving the overall performance of the antenna.

[0064] Please continue reading Figure 1 In the process of implementing the present application, it is surprisingly found that the first radiating portion 21 and the second radiating portion 22 with a unique layout or structure can meet the requirements of both low frequency (such as 900MHz) and high frequency (2.4GHz) bands while maintaining the miniaturization of the antenna.

[0065] In some embodiments, the first radiating portion 21 may include a first vibrator 211 and a second vibrator 212. The first vibrator 211 and the second vibrator 212 are both symmetrically shaped and symmetrically arranged along the axis A of the substrate. In addition, the first vibrator 211 is closer to the head of the substrate than the second vibrator 212. The second vibrator 212 is located closer to the root of the substrate. That is, the first vibrator 211 is located before the second vibrator 212.

[0066] Among them, Figure 3 As shown, the first vibrator 211 has multiple bends to form a structure similar to a "W" shape. Specifically, the W-shaped structure can also be considered to be formed by a combination of three U-shaped structures, wherein the first openings S1 of the two U-shaped structures are oriented in the same direction, toward the root of the substrate. The second opening S2 of the other U-shaped structure is located between the two first openings S1, and its direction is opposite to the first opening S1, toward the head of the substrate. Of course, the first vibrator 211 can also be fine-tuned accordingly based on the W-shaped structure, such as the tilt angle, the length of the vibrator, etc.

[0067] Specifically, the first oscillator 211 may be composed of four sections of longitudinal microstrip lines 211a and three sections of transverse microstrip lines 211b. "Longitudinal microstrip line" refers to a microstrip line that extends a certain length mainly along the direction of the axis A of the substrate, but does not necessarily have to extend along the direction of the axis A. It may have a certain inclination angle and only needs to have a longer projection length in the direction of the axis A of the substrate. "Transverse microstrip line" refers to a microstrip line that extends a certain length in the radial direction of the substrate (i.e., the direction perpendicular to the axis A). Similarly, the transverse microstrip line is only used to indicate that the projection length of the microstrip line in the radial direction is much greater than the projection length in the axial direction, and is not used to limit the specific extension direction of the microstrip line.

[0068] The three transverse microstrip lines 211b are arranged alternately at different ends of the longitudinal microstrip line 211a, thereby forming the first opening S1 and the second opening S2. The first opening S1 is toward the root of the substrate, while the second opening S2 is toward the head of the substrate, which is opposite to the direction of the first opening.

[0069] Please continue reading Figure 3 The second vibrator 212 can be roughly divided into three parts: a vibrating body 212a, a bending portion 212b and a vibrating arm 212c. The bending portions 212b are respectively located at two ends of the vibrating body 212a and extend outward at a certain angle, thereby forming a U-shaped structure.

[0070] In addition, the vibrating body 212a is connected to the first oscillator 211 and serves as a specific connection portion for connecting the first radiating portion to the feeder. The vibrating body 212a can be in any suitable form to achieve connection with the oscillator 211. For example, the vibrating body 212a can be a section of a transverse microstrip line constituting the first oscillator 211 or a part thereof.

[0071] In a preferred embodiment, if Figure 1 As shown, a pair of air-avoiding grooves 50 may be further provided on the substrate 10. Similar to the first radiation portion, the air-avoiding grooves 50 are also symmetrically arranged along the axis A of the substrate and are located in the area where the first vibrator 211 is located. That is, they are opened in the first vibrator 211.

[0072] The additionally provided air-avoiding groove 50 can improve the coverage of the first vibrator 211 for the low-frequency signal.

[0073] Specifically, the air avoidance groove 50 can be opened in the area between the two longitudinal microstrip lines 221a constituting the first opening S1 to adjust the capacitance structure of the two longitudinal microstrip lines 221a, thereby effectively improving the coverage of the antenna to the low-frequency signal.

[0074] In other embodiments, please refer to Figure 1, the second radiating portion 22 may include a third oscillator 221 and a fourth oscillator 222. Similar to the first radiating portion 21, the third oscillator 221 and the fourth oscillator 222 constituting the second radiating portion 22 are both symmetrically arranged along the axis A of the substrate, and the third oscillator 221 is located at the head of the substrate 10 relative to the fourth oscillator 222, while the fourth oscillator 222 is relatively arranged at the rear.

[0075] The third vibrator 221 can be roughly divided into a vibrator head portion 221 a and a vibrator connecting portion 221 b connected to the fourth vibrator 222 .

[0076] The vibrator head 221a of the third vibrator 221 has a significantly larger wiring width than the fourth vibrator 222. The vibrator connecting portion 221b is a transition structure connected between the vibrator head 221a and the fourth vibrator 222, gradually transitioning from the vibrator head 221a to the fourth vibrator 222 with a smaller width.

[0077] The fourth dipole 222 is a connection portion between the third dipole 221 and the feed line 30 , and connects the third dipole 221 and the feed line 30 , thereby forming the second radiation portion 22 .

[0078] Specifically, the fourth vibrator 222 may be a microstrip line with a narrow first width, and the vibrator connecting portion 221b may be in a trapezoidal structure, which gradually narrows from the second width of the vibrator head 221a to the first width of the fourth vibrator 222. Thus, the third vibrator 221 and the fourth vibrator 222 form a structure similar to an "!" (exclamation mark).

[0079] The second radiating portion 22 provided in this embodiment has a larger wiring width, which can effectively improve the signal attenuation formed during signal transmission and enhance the performance of the antenna.

[0080] It should be noted that Figure 1 The antenna shown is only for illustrative purposes. Those skilled in the art may add, adjust, replace or omit one or more functional components according to actual needs, without limitation. Figure 1 shown. Figure 1 The technical features involved in the embodiments of the antenna shown can be combined with each other as long as they do not conflict with each other, and can be applied independently in different embodiments as long as they do not depend on each other.

[0081] Those skilled in the art will understand that the length of the vibrator, or the effective length of the vibrator arm, is an important dimension parameter of the antenna and is closely related to the frequency band of wireless signal reception or transmission. Based on the different signal frequency bands corresponding to different radiating parts, the length of the vibrator needs to be controlled to ensure that the antenna meets the use requirements.

[0082] Specifically, the length of the first radiation part composed of the W-shaped first oscillator 211 and the U-shaped second oscillator 212 (i.e., the sum of the lengths of the two longitudinal microstrip lines located above the substrate axis A, the oscillator body of the second oscillator, and the bending portion and the extension portion of the second oscillator located above the substrate axis A) needs to be controlled between 1 / 8 and 3 / 4 of the resonant wavelength of the first frequency band. The length of the second radiation part with an "!"-shaped structure (i.e., the sum of the lengths of the third oscillator 221 and the fourth oscillator 222) needs to be controlled between 1 / 8 and 3 / 4 of the resonant wavelength of the second frequency band.

[0083] The first frequency band is a lower frequency band than the second frequency band. That is, the length of the first radiation portion 21 needs to be controlled between 1 / 8 and 3 / 4 of the low-frequency resonance wavelength. The length of the second radiation portion 22 is maintained between 1 / 8 and 3 / 4 of the high-frequency resonance wavelength.

[0084] The embodiment of the present invention provides a specific example of a dual-frequency antenna that can operate in two frequency bands: 900 MHz and 2.4 GHz.

[0085] like Figure 1 As shown, the dual-band antenna includes: a substrate 10 , a first vibrator 211 , a second vibrator 212 , a third vibrator 221 , a fourth vibrator 222 , a feed line 30 , a pad 40 and a gap 50 .

[0086] The substrate 10 is substantially in the shape of a trapezoid, wherein the narrower top edge of the trapezoid is the head of the substrate 10 , and the wider bottom edge of the trapezoid is the root of the substrate 10 .

[0087] The feed line 30 is implemented by a coaxial line, which starts from a connection point located in the middle of the substrate 10, runs a distance on the substrate 10 until it leaves the substrate 10 from the root of the substrate 10, and extends outward to other external devices or circuits connected to the antenna.

[0088] The pad 40 is made of 0.5 mm foam and is placed between the feeder 30 and the substrate 10. The feeder 30 is fixed to the pad 40 by a cable tie 60 and is fixed as a whole with the substrate 10. The pad 40 is used to raise the feeder 30 so that the feeder 30 maintains a distance from the substrate 10, which can effectively avoid interference when the feeder transmits signals.

[0089] The first vibrator 211 , the second vibrator 212 , the third vibrator 221 and the fourth vibrator 222 are all arranged on the surface of the substrate, and are conductors (such as microstrip lines) with specific shapes, lengths and widths, and are partially exposed to receive or send wireless signals of specific frequency bands.

[0090] The first oscillator 211 can be a W-shaped oscillator formed by multiple bends, and the second oscillator 212 can be a U-shaped oscillator. The first oscillator 211 and the second oscillator 212 partially overlap (share), and the overlapping part is connected to the outer conductor of the coaxial line (feeder 30).

[0091] The length of the oscillator part of the first radiation part located on one side of the axis of the substrate is 1 / 8 to 3 / 4 of the low-frequency (900 MHz) resonance wavelength.

[0092] The paired air-avoiding grooves 50 are symmetrical along the axis of the substrate and are provided between two longitudinal microstrip lines of the first oscillator 211 to improve the capacitance structure of the first oscillator 211 and enhance the coverage of low-frequency signals.

[0093] The third oscillator 221 has a large wiring width at the head, which gradually narrows at the transition part, and forms an "!"-shaped oscillator shape with the narrower fourth oscillator 222, forming a second radiation part corresponding to high-frequency signals. The fourth oscillator 222 is connected to the inner conductor of the coaxial line (feeder 30).

[0094] The length of the third vibrator 221 and the fourth vibrator 222 is 1 / 8 to 3 / 4 of the high frequency (2.4 GHz) resonance wavelength. By providing the third vibrator 221 with a wider wiring, the attenuation of the high frequency signal during transmission can be effectively reduced.

[0095] Figure 4 Schematic diagram of the S parameters of the antenna provided in the embodiment of the present invention. Figure 4 As shown, the antenna provided in the above embodiment can work in 890MHz-940MHz (low frequency band) and 2.26GHz-2.56GHz (high frequency band). Therefore, it can achieve coverage of the two frequency bands of 900MHz and 2.4GHz.

[0096] Figure 5 and Figure 6 The antenna radiation patterns of the antenna provided in the embodiments of the present invention in the low frequency band and the high frequency band are shown respectively. Figure 5 and Figure 6 As shown, the antenna provided by the embodiment of the present invention has good directivity in both low-frequency bands and high-frequency bands, good omnidirectionality, and no defects in a specific direction.

[0097] Based on the antenna provided in the above embodiment, the embodiment of the present invention further provides a wireless signal processing device. This embodiment does not limit the specific implementation of the wireless signal processing device, which can be any type or kind of electronic device for transmitting and receiving wireless signals, such as a remote control, a smart terminal, a wearable device, or a signal transceiver of a mobile vehicle.

[0098] Figure 7 The structure diagram of the wireless signal processing device provided by the embodiment of the present invention is as follows. Figure 7 As shown, 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 line to achieve signal transmission between them.

[0099] The antenna 100 may be the antenna described in one or more of the above embodiments, 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.

[0100] The transmitting path 200 is a functional module for loading the information content to be transmitted into the carrier signal to form a wireless signal. It can be any type of electronic system composed of one or more electronic components that can generate wireless signals, such as a radio frequency chip.

[0101] The receiving path 300 is an electronic system for analyzing the wireless signal received by the antenna to obtain the information content contained in the wireless signal, such as a decoding chip of a specific model. It has an opposite information flow direction to the transmitting path 200 and is a functional module for completing information acquisition.

[0102] In some embodiments, based on the specific implementation of the wireless signal processing device, one of the transmitting path 200 and the receiving path 300 can be omitted. 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.

[0103] The embodiments of the present invention further provide application scenarios of the antennas provided in the above embodiments. Figure 8 Schematic diagram of application scenarios of antennas provided in embodiments of the present invention. Figure 8 As shown, this application scenario may include: a main structure 400, an antenna housing 410, and the antenna described in the above embodiment.

[0104] The main structure 400 is a structure that provides an installation position for the antenna housing 400. According to the specific application scenario of the antenna, the main structure 400 can be a part of the housing of any type of equipment. For example, the main structure 400 can be a part of the fuselage housing of a drone.

[0105] The antenna housing 410 is a shell wrapped around the antenna to protect it. The antenna housing 200 can be made of any suitable type of non-conductive material and have a specific shape to meet the use requirements. For example, it can be set to Figure 8 The curved shape shown can be used as a landing gear for a drone.

[0106] The antenna in the above embodiment is enclosed in an antenna housing 410 (not shown in the figure), and the substrate 10 may have or be formed in a shape that matches the antenna housing 410. The signal transmission between the radiation part and the receiving path / transmitting path is realized through the feeder.

[0107] With the development of drone technology, it is always expected to reduce the size of drone fuselage as much as possible, so that drone can be suitable for performing flight missions in more scenarios. However, when the size of drone fuselage is reduced, higher requirements are put forward for the size and structure of antenna, which is expected to be realized in a limited volume and as simple a structure as possible.

[0108] Therefore, the antenna structure provided by the embodiment of the present invention can well meet the requirements of the antenna volume and structure of a UAV with a smaller fuselage. Fig. 9 As shown, the drone may include: a fuselage 400, motors (510, 520) and an antenna.

[0109] The fuselage 400, as the main structure of the drone, can be made of any suitable material and have a structure and size that meet the use requirements (such as Fig. 9 The fuselage 400 may be provided with a variety of different functional components such as a landing gear 410, a propeller 420, and a camera 430. Of course, those skilled in the art may also add or omit one or more of the functional components according to actual needs, for example, a corresponding gimbal 440 may be added to the camera 430.

[0110] The motors (510, 520) are installed on the fuselage 400 to provide flying power for the drone. The motors may be provided with one or more motors, which are arranged at corresponding positions of the fuselage 400 (such as the fuselage motor 510 and the wingtip motor 520) and are used to perform different functions (such as driving the propeller 420 to rotate, controlling the fuselage attitude, etc.).

[0111] The antenna may be installed and accommodated in the landing gear 410 (eg Fig. 9 As shown, in the front landing gear labeled 410), as a part of the wireless signal transceiver device, it is used to receive remote control operation instructions from the remote control or to feedback relevant data information (such as captured images, operating status parameters of the drone itself) to the remote control or other intelligent terminals.

[0112] Of course, based on the drone 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 limitation. Fig. 9 Drone shown.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An antenna, characterized in that: include: A substrate, wherein the substrate is a non-conductive structure having a predetermined shape; The substrate has a flat substrate surface; A first radiating portion and a second radiating portion are arranged on the surface of the substrate, wherein the first radiating portion and the second radiating portion are symmetrical along the axis of the substrate and correspond to different frequency bands; Feeders respectively connected to the first radiating portion and the second radiating portion; a pad having a preset size, the pad being arranged between the feed line and the substrate surface so as to keep the feed line at a distance from the substrate surface; The first radiating portion comprises: A first vibrator symmetrical along the axis of the substrate, wherein the first vibrator has multiple bends to form two first openings facing the same direction and a second opening facing the opposite direction of the first opening; A second vibrator is arranged along an extending direction of the first opening, wherein the second vibrator comprises: A vibrating body connected to the feeder; the vibrating body is connected to the first vibrator; bending portions respectively arranged at two ends of the vibrating body; and A pair of vibration arms formed by extending the bent portion by a predetermined length; The second radiation portion comprises: a third vibrator located at a head portion of the substrate surface, wherein the head portion of the substrate surface is an end away from an extension direction of the feed line; A fourth oscillator connected between the third oscillator and the feeder; The third vibrator comprises: A vibrator head having a second width, wherein the vibrator head is located at the head of the substrate surface; The vibrator connecting portion is located between the vibrator head and the fourth vibrator, the fourth vibrator has a first width smaller than the second width, and the vibrator connecting portion has a transition structure that reduces from the second width to the first width.

2. The antenna according to claim 1, characterized in that The pad body is made of non-conductive material, which includes foam, plastic and wood.

3. The antenna according to claim 2, characterized in that: The cushion body is a foam layer, a wood frame or a plastic frame with a preset thickness.

4. The antenna according to claim 2, characterized in that: The feeder and the pad are fixed on the substrate in a manner that includes: bundling or gluing.

5. The antenna according to claim 4, characterized in that: The antenna further includes: a pair of air-avoiding grooves; the air-avoiding grooves are symmetrically arranged along the axis of the substrate and are located inside the first oscillator.

6. The antenna according to claim 5, characterized in that The air avoidance groove is arranged between two sections of longitudinal microstrip lines forming the first opening; The first vibrator is composed of a plurality of longitudinal microstrip lines extending along the axial direction of the substrate and a plurality of transverse microstrip lines extending along the radial direction of the substrate.

7. The antenna according to claim 1, characterized in that: The first radiating portion corresponds to a first frequency band, and the second radiating portion corresponds to a second frequency band having a frequency higher than the first frequency band; The total length of the first vibrator and the second vibrator is between 1 / 8 and 3 / 4 of the resonance wavelength of the first frequency band; The total length of the third vibrator and the fourth vibrator is between 1 / 8 and 3 / 4 of the resonance wavelength of the second frequency band.

8. The antenna according to claim 7, characterized in that: The first frequency band is a 900 MHz frequency band, and the second frequency band is a 2.4 GHz frequency band.

9. The antenna according to claim 1, characterized in that: The feed line is a coaxial line; the inner conductor of the coaxial line is connected to the fourth vibrator, and the outer conductor of the coaxial line is connected to the second vibrator.

10. A wireless signal processing device, characterized in that: include: The antenna according to any one of claims 1 to 9, used for sending or receiving wireless signals; The transmitting 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.

11. A drone, characterized in that: include: a fuselage, wherein the fuselage has a landing gear; A motor, mounted on the fuselage, for providing flight power for the UAV; The antenna according to any one of claims 1 to 9, mounted in the landing gear.

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