Antennas, wireless signal processing equipment and drones

Abstract

The embodiments of the present invention relate to the field of antenna technology, and in particular to an antenna, a wireless signal processing device, and a drone. The antenna includes: a substrate having a first surface and a second surface located opposite to the first surface; a first vibrator and a second vibrator arranged on the first surface, the first vibrator and the second vibrator are in opposite directions, the first vibrator is located at one end close to the head of the substrate, and the second vibrator is located at one end close to the root of the substrate; a third vibrator arranged on the second surface, the third vibrator is mirror-symmetrical with a part of the structure of the first vibrator, and is connected to the second vibrator so that the first vibrator, the second vibrator and the third vibrator form a coupling resonance point; a feeder connected to the first vibrator, the second vibrator and the third vibrator. The antenna adopts reasonable wiring and structural design, which can achieve a larger bandwidth on a smaller substrate, overcoming the defect that large-bandwidth antennas are difficult to miniaturize.

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, wireless transmission has higher and higher requirements for the number of covered frequency bands and bandwidth. This poses a great challenge to the structural design of antennas.

[0003] In order to meet the increasingly high bandwidth requirements, complex structural designs are often required to achieve a larger bandwidth. However, the complex structure of the antenna will make it difficult to effectively control the size of the antenna, making it difficult to achieve miniaturization, making it 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 defects of existing large-bandwidth antennas that are complex in structure and difficult to miniaturize.

[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 first surface and a second surface opposite to the first surface;

[0007] A first vibrator and a second vibrator are arranged on the first surface, the first vibrator and the second vibrator are in opposite directions, the first vibrator is located at an end close to the head of the substrate, and the second vibrator is located at an end close to the root of the substrate;

[0008] A third vibrator is arranged on the second surface, wherein the third vibrator is mirror-symmetrical with a part of the structure of the first vibrator and is connected to the second vibrator, so that the first vibrator, the second vibrator and the third vibrator form a coupling resonance point;

[0009] A feeder line connected to the first dipole, the second dipole and the third dipole.

[0010] Optionally, the antenna further includes: a fourth vibrator and a fifth vibrator arranged on the second surface;

[0011] The fourth vibrator and the fifth vibrator are symmetrically arranged and have opposite directions, and the fourth vibrator faces one end of the substrate head.

[0012] Optionally, the feeder includes a first feeder and a second feeder;

[0013] The first feed line runs on the first surface of the substrate and is connected to the first vibrator, the second vibrator and the third vibrator;

[0014] The second feed line runs on the second surface of the substrate and is connected to the fourth vibrator and the fifth vibrator.

[0015] Optionally, the first feeder line and the second feeder line are coaxial lines;

[0016] The first dipole is connected to the inner conductor of the first feeder, and the second dipole and the third dipole form a passage connected to the outer conductor of the first feeder;

[0017] The fourth dipole is connected to the inner conductor of the second feeder line, and the fifth dipole is connected to the outer conductor of the second feeder line.

[0018] Optionally, the first vibrator and the second vibrator are symmetrically arranged along the axial direction of the substrate.

[0019] Optionally, a difference between an effective length of the first vibrator and an effective length of the second vibrator is greater than zero and less than a preset length threshold.

[0020] Optionally, the first vibrator includes:

[0021] a first vibrator body having a predetermined length extending in a radial direction of the substrate;

[0022] A pair of first vibrating arms are respectively formed at two ends of the first vibrator body and extend along the axial direction of the substrate;

[0023] A first microstrip line is arranged on the symmetry axis of the first vibrator, the length of the first microstrip line is greater than the vibrating arm, and the first microstrip line is connected to the vibrator body;

[0024] A pair of second microstrip lines are arranged between the first microstrip line and the first vibrator arm, wherein the second microstrip lines are longer than the first microstrip line and are connected to the first vibrator body.

[0025] Optionally, the third oscillator is mirror-symmetric to the first oscillator body and a pair of the second microstrip lines.

[0026] Optionally, the second vibrator includes:

[0027] a second vibrator body having a predetermined length extending in a radial direction of the substrate;

[0028] A pair of second vibrating arms, wherein the second vibrating arms are formed near the end of the second vibrator body and extend along the axial direction of the substrate;

[0029] A pair of third microstrip lines, wherein the third microstrip lines are arranged between a pair of the second vibration arms.

[0030] Optionally, the third microstrip line extends to one end of the root of the substrate; and the width of the third microstrip line is greater than that of the second vibration arm.

[0031] Optionally, the fourth vibrator includes: a fourth vibrator body and a pair of fourth vibrating arms formed by two ends of the fourth vibrator extending along the axial direction of the substrate.

[0032] Optionally, the first vibrator, the second vibrator and the third vibrator constitute a first radiating portion, and the fourth vibrator and the fifth vibrator constitute a second radiating portion;

[0033] The first radiating portion corresponds to a first frequency band; the second radiating portion corresponds to a second frequency band, and has a length between 1 / 8 and 3 / 4 of a resonant wavelength of the second frequency band; and the frequency of the first frequency band is higher than that of the second frequency band.

[0034] Optionally, the first frequency band is a 900 MHz frequency band, and the second frequency band is a 5.8 GHz frequency band.

[0035] Optionally, the antenna further comprises: a pad having a preset size,

[0036] The pad is arranged between the feeder and the substrate so as to keep the feeder at a distance from the substrate.

[0037] Optionally, the cushion body includes: a foam layer, a plastic frame or a wooden frame.

[0038] Optionally, a method of fixing the feeder and the pad body on the substrate includes: bundling fixation or gluing fixation.

[0039] 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 receiving path, used to parse the wireless signal received by the antenna to obtain the information content contained in the wireless signal; and a transmitting path, used to load the information content into a radio frequency carrier signal to form a wireless signal and send it through the antenna.

[0040] To solve the above technical problems, the embodiments of the present invention also provide the following technical solutions: A drone. The drone comprises: a fuselage, the fuselage having a landing gear; a motor installed at the connection between the fuselage and the landing gear, for providing flight power for the drone; and the antenna as described above, installed in the landing gear.

[0041] The antenna of the embodiment of the present invention adopts reasonable wiring and structural design, and uses the first vibrator, the second vibrator and the third vibrator respectively located on both sides of the substrate to form a coupled resonance point, so as to achieve a larger bandwidth on a smaller substrate, thereby overcoming the defect that large bandwidth antennas are difficult to miniaturize.

Brief Description of the Drawings

[0042] 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.

[0043] Figure 1 A schematic diagram of the structure of an antenna provided in an embodiment of the present invention;

[0044] Figure 2 A schematic diagram of the structure of a first vibrator and a second vibrator provided in an embodiment of the present invention;

[0045] Figure 3 A side view of an antenna provided by an embodiment of the present invention;

[0046] Figure 4 A schematic diagram of low-frequency S parameters of an antenna provided in an embodiment of the present invention;

[0047] Figure 5 A schematic diagram of high-frequency S parameters of an antenna provided in an embodiment of the present invention;

[0048] Figure 6 The directional diagram of the antenna provided by the embodiment of the present invention in the low frequency band;

[0049] Figure 7 The directional diagram of the antenna provided by the embodiment of the present invention in the high frequency band;

[0050] Figure 8 A schematic diagram of a wireless signal processing device provided by an embodiment of the present invention;

[0051] Fig. 9 A schematic diagram of an antenna provided by an embodiment of the present invention in an application scenario of a drone. [Specific implementation method]

[0052] 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.

[0053] 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.

[0054] 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.

[0055] Figure 1 A schematic diagram of the structure of an antenna provided in an embodiment of the present invention. In this embodiment, for the convenience of description, the front side of the antenna is referred to as the "first surface A", and the back side thereof is referred to as the "second surface B". The "first" and "second" are only used to distinguish the front side and the back side of the substrate 10, and are not used to define the surface.

[0056] like Figure 1 As shown, the antenna mainly includes a substrate 10 as the antenna structure basis, a vibrator (211, 212, 213, 221, 222) arranged on a first surface A and a second surface B of the substrate and having a specific structural shape, and a feeder (31, 32) connected to the vibrator.

[0057] The substrate 10 can be a non-conductive structure made of any type of material (such as plastic, foam) and having a specific shape (such as a trapezoid). It has a relatively flat shape, forming a flat first surface and a flat second surface.

[0058] The vibrator is a conductor (such as copper foil) with a specific shape and length arranged on the surface of the substrate. It can be fixed on the surface of the substrate in any suitable form (such as patch type) and exposed to the outside, and receives or transmits wireless signals of a specific frequency band through the principle of electromagnetic induction.

[0059] One or more oscillators may constitute a resonant unit for receiving or transmitting wireless signals of a specific frequency band. In this embodiment, such a resonant unit may be referred to as a "radiating unit". In a multi-frequency antenna, there may generally be multiple radiating units, each of which is used to cover or correspond to a different frequency band.

[0060] In some embodiments, a first vibrator 211 , a second vibrator 212 , and a third vibrator 213 may be disposed on the substrate 10 to form a first radiating portion 21 corresponding to the first frequency band.

[0061] The first vibrator 211 and the second vibrator 212 are arranged on the first surface A, and the two directions are opposite. Figure 1 As shown, the direction of the first dipole 211 is opposite to the extending direction of the feeder line, while the direction of the second dipole 212 is the same as the extending direction of the feeder line.

[0062] In addition, the second oscillator 212 is located closer to the base of the substrate (i.e., the end through which the feeder line leaves the substrate) than the first oscillator 211. In other words, the first oscillator 211 is located closer to the head of the substrate. In this embodiment, for simplicity, the end close to the extension direction of the feeder line is called the "base of the substrate", and the end away from the extension direction of the feeder line is called the "head of the substrate".

[0063] The third vibrator 213 is a vibrator disposed on the reverse side of the substrate (ie, the second surface B). The third vibrator 213 has the same structure as a part of the first vibrator 211. The structure of the third vibrator 213 and the first vibrator 211 are in a "mirror symmetric" relationship.

[0064] The mirror symmetry can also be called mirror symmetry, which means that the vibrator structures located on two opposite surfaces of the substrate are symmetrical relative to the plane of the substrate. In other words, the third vibrator 213 can be considered as a vibrator structure formed by horizontally flipping a part of the vibrator structure in the first vibrator 211 to the second surface B.

[0065] In addition, the third vibrator 213 is also connected or conducted with the second vibrator 212. In other words, the third vibrator 213 and the second vibrator 212 belong to the same path. Specifically, any suitable method can be adopted to allow the third vibrator 213 on the back side of the substrate 10 to pass through the substrate and establish a connection with the second vibrator 212 on the front side of the substrate 10 (such as a connected wire).

[0066] In this embodiment, the space of the substrate is fully utilized. Through the above-mentioned reasonable antenna structure routing arrangement, the first vibrator, the second vibrator and the third vibrator can form a coupled resonance point, thereby greatly improving the bandwidth of the first radiating part, so that the antenna can meet the use requirements of a larger bandwidth while achieving structural miniaturization.

[0067] Therefore, those skilled in the art can adjust one or more of the effective lengths, vibrator shapes or other similar vibrator parameters of the first vibrator 211, the second vibrator 212 and the third vibrator 213 according to actual needs (such as the frequency band corresponding to the first radiating portion). All adjustments, changes or replacements made to the present application to achieve mutual coupling of the first vibrator 211, the second vibrator 212 and the third vibrator 213 to form a coupling resonance point are within the protection scope of the present application.

[0068] Those skilled in the art will appreciate that the length of the oscillator (also referred to as the dimension length or effective length) is an important dimension parameter of the antenna, and is closely related to the frequency band of the wireless signal reception or transmission.

[0069] In a preferred embodiment, the first vibrator 211 may have an effective length slightly greater than that of the second vibrator 212. "Slightly greater than" means that the difference between the two is less than a certain threshold or is within a smaller value range. In other words, the difference between the effective length of the first vibrator 211 and the effective length of the second vibrator 212 is within a range from zero to a preset length threshold.

[0070] The preset length threshold indicates the difference between the effective lengths of the first vibrator 211 and the second vibrator 212. The length threshold is an empirical value and can be selectively set by a technician according to actual conditions to achieve an effect that the effective length of the first vibrator 211 is slightly greater than that of the second vibrator 212.

[0071] Figure 2 A schematic diagram of the structure of the first vibrator 211 and the second vibrator 212 provided in an embodiment of the present invention. In the process of implementing the present application, it is surprisingly found that the use of Figure 2 When the vibrator structure is in the form shown, good antenna performance can be obtained with a smaller volume.

[0072] The first vibrator 211 and the second vibrator 212 are symmetrically arranged along the axis direction of the substrate 40. In other words, the structures of the first vibrator 211 and the second vibrator 212 on both sides of the axis of the substrate are symmetrical.

[0073] like Figure 2 As shown, the first oscillator 211 may include: a first oscillator body 211a, a first oscillating arm 211b, a first microstrip line 211c and a second microstrip line 211d.

[0074] The first oscillator body 211a is a microstrip line or similar conductor structure having a predetermined length extending in the radial direction of the substrate, wherein the radial direction is a direction perpendicular to the axial direction of the substrate. The predetermined length is an empirical value and can be set by technicians according to actual needs.

[0075] There is a pair of first vibrating arms 211b, which are respectively located at two ends of the first vibrator body 211a and are symmetrical along the axis of the substrate. The first vibrating arms 211b extend in the axis direction and extend a certain length toward the head of the substrate.

[0076] The first microstrip line 211c is similar to the first vibration arm 211b, and similarly extends a certain length from the first vibrator body in the axial direction. The difference is that its position is located on the symmetry axis of the first vibrator (i.e., the axis of the substrate), and overlaps with the symmetry axis. In other words, the first microstrip line 211c is located between the first vibration arms 211b on both sides, and has a length greater than the first vibration arm 211b, so as to be combined with the first vibration arm 211b and the vibrator body 211a to form a vibrator shape similar to the "mountain" shape.

[0077] Furthermore, the second microstrip line 211d is also arranged in pairs, and is located between the first microstrip line 211c and the first vibration arm 211b on both sides of the axis of the substrate. It is also connected to the first vibrator body 211a, and is longer than the first microstrip line 211c, so as to form a complete first vibrator structure.

[0078] Specifically, the second microstrip line 211d may have a certain inclination, and extend from the vibrator body 211a to a length greater than that of the first microstrip line 211c.

[0079] In some embodiments, Figure 1 As shown, the third vibrator arranged on the second surface B can have a vibrator structure similar to a "π" shape, which is mirror-symmetrical to the vibrator structure composed of the first vibrator body 211a and a pair of third microstrip lines 211c of the first vibrator arranged on the first surface A.

[0080] Please continue reading Figure 2 The second vibrator 212 can be roughly divided into: a second vibrator body 212a, a second vibrating arm 212b and a third microstrip line 212c, etc.

[0081] The second vibrator body 212 a is similar to the first vibrator body 211 a and has a predetermined length extending along the radial direction of the substrate.

[0082] The second vibrating arms 212 b are also arranged in pairs, respectively located near two ends of the second vibrator body and extending a certain length along the axial direction of the substrate.

[0083] The third microstrip line 212c is arranged between a pair of second vibration arms 212b and maintains symmetry along the axis of the substrate. Specifically, the third microstrip line 212c and the second vibration arm 212b can have a certain inclination, so as to form a vibrator structure similar to a "π" shape with the second vibrator body 212a on one side of the axis of the substrate. Therefore, from the overall perspective of the second vibrator 212, it has a vibrator structure similar to a double "π" shape.

[0084] In a preferred embodiment, a third microstrip line 212c extending to the end of the base plate can be used, and the width w1 of the third microstrip line 212c is greater than the width w2 of the second arm 212b to improve the coverage of the antenna to low-frequency signals.

[0085] In some other embodiments, in addition to the first radiation portion, please continue to refer to Figure 1 The antenna may further include a second radiating portion 22 consisting of a fourth oscillator 221 and a fifth oscillator 222 .

[0086] The second radiating portion 22 corresponds to a different frequency band from the first radiating portion 21, and corresponds to a higher second frequency band. Thus, the second radiating portion can cover the high frequency band, while the first radiating portion covers the low frequency band, thereby obtaining a dual-frequency antenna.

[0087] Of course, the first frequency band corresponding to the first radiating portion 21 and the second frequency band corresponding to the second radiating portion 22 can be set according to the actual needs, and are not limited to specific frequency bands. The "first" and "second" are only used to distinguish the frequency bands corresponding to or covered by the two radiating portions, indicating the relative high and low frequencies between the two.

[0088] The fourth vibrator 221 and the fifth vibrator 222 may be symmetrically arranged with oppositely oriented dipole structures. The fourth vibrator 221 faces one end of the substrate head, and the fifth vibrator 222 faces one end of the substrate root, and the two are symmetrically arranged along a straight line in the radial direction of the substrate.

[0089] Specifically, the fourth vibrator 221 may be composed of a fourth vibrator body 221a and a pair of fourth vibrating arms 221b extending along the axial direction of the substrate at two ends of the fourth vibrator, forming a vibrator structure similar to a U-shape. The fifth vibrator 222 adopts a structure symmetrical to the fourth vibrator 221, and for the sake of simplicity, it is not described repeatedly here.

[0090] The feeder (31, 32) is a line that connects the "radiating part" with other signal processing systems to form a signal transmission path. It can specifically adopt any suitable type of wire (such as a coaxial line) with sufficient shielding and signal transmission performance. In some embodiments, corresponding to the two radiating parts, the feeder can also be set as a first feeder 31 and a second feeder 32, which are used to transmit low-frequency band signals and high-frequency band signals respectively, and run on the first surface A and the second surface B of the substrate 10.

[0091] like Figure 1 As shown, the feed line (31, 32) usually needs to start from the position connected to the radiation part and extend a certain length in the direction of the base plate until it leaves the base plate 10. In other words, the feed line 30 will pass through or run on the surface of the base plate. "Running" refers to the situation where the feed line (31, 32) passes on the surface of the base plate 10 or a certain distance from the base plate surface.

[0092] When the feeder (31, 32) transmits a signal, it will affect or interfere with the resonant signal of the radiation part of the substrate surface. In a preferred embodiment, the interference caused by the feeder (31, 32) transmitting the signal can be reduced as much as possible by providing a pad 40.

[0093] Please continue reading Figure 1 The pad 40 is a filling structure arranged between the feeder (31, 32) and the substrate surface. It has a predetermined size and is placed under the feeder so that the feeder 30 maintains a sufficient distance from the substrate surface.

[0094] In this embodiment, "size" refers to a combination of multiple parameters related to the shape of the pad body, which is used 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 shape structure of the pad body 40 selected for use or the distance to be achieved between the feed line (31, 32) and the substrate surface.

[0095] 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 (31, 32) is kept at a sufficient distance from the substrate.

[0096] The distance between the feed lines (31, 32) and the substrate can be characterized or measured by one or more parameters, for example, by the vertical distance between the feed lines (31, 32) and the substrate surface.

[0097] The vertical distance is an empirical value and only needs to meet the use requirements. The technicians can predetermine the minimum standard or appropriate standard that the vertical distance between the feeder (31, 32) 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.

[0098] Specifically, as a structure for raising the feeder, the pad 40 can be made of any suitable type of non-conductive material, including but not limited to foam, plastic and wood. 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 (such as 0.5 mm thick foam), and when wood or plastic is used, a wood frame or a plastic frame with a shape structure that matches the feeder (31, 32) can be selected as the pad 40.

[0099] In other embodiments, in order to avoid relative movement between the feeder (31, 32) and 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) to keep the substrate 10, the pad 40 and the feeder 30 fixed as a whole.

[0100] Specifically, Figure 3 As shown, when the bundling fixing method is adopted, the feeder (31, 32) and the pad body 40 can be bundled and fixed on the substrate 10 by passing a hemp rope 60 or a similar rope-like object through the air avoidance groove 70 or other similar holes provided on the substrate 10 at intervals.

[0101] Specifically, a suitable number of hemp ropes 60 may be provided according to the distance or length of the feeder 30 on the substrate 10. Of course, other non-conductive bundling materials (such as plastic cable ties) that will not affect the antenna receiving or transmitting signals may also be used.

[0102] When the adhesive fixing method is adopted, the feeder (31, 32), the pad 40 and the substrate 10 can be adhesively fixed by using a suitable type of glue or tape or other adhesive material with adhesive force. Of course, the above bundling fixing and adhesive fixing methods can also be used in combination, and not necessarily independently. For example, the pad 40 can be adhesively fixed on the substrate 10, and the feeder (31, 32) can be bundled and fixed on the pad 40.

[0103] In the antenna structure provided in the embodiment of the present invention, a filling structure with a reasonable size is provided between the feed line (31, 32) and the substrate surface to raise the feed line (31, 32) so as to ensure that the feed line (31, 32) running on the substrate maintains a certain distance from the substrate surface, thereby reducing the influence or interference of the feed line (31, 32) 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 conducive to improving the overall performance of the antenna.

[0104] 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.

[0105] 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 5.8 GHz.

[0106] like Figure 1 As shown, the dual-band antenna includes: a substrate 10 , a first oscillator 211 , a second oscillator 212 , a third oscillator 213 , a fourth oscillator 221 , a fifth oscillator 222 , a sixth oscillator 233 , a first feed line 31 , a second feed line 32 and a pad 40 .

[0107] The first vibrator 211 is generally in the shape of a "mountain" with a pair of inclined microstrip lines added to the "mountain" vibrator shape. The second vibrator 212 is in the shape of a vibrator formed by superimposing two "π" characters, and the effective length of the first vibrator is slightly greater than the effective length of the second vibrator.

[0108] The third vibrator 213 is arranged on the reverse side and has a vibrator shape similar to the letter “π” (which is mirror-symmetrical with a part of the first vibrator 211). The third vibrator 213 is connected to the second vibrator 212 and belongs to the same passage.

[0109] The first feeder 31 adopts a coaxial line, the first vibrator 211 is connected to the inner conductor of the coaxial line 31, and the passage where the second vibrator 212 and the third vibrator 213 are located is connected to the outer conductor of the coaxial line 31. The first feeder 31 running on the front of the substrate 10 is fixed on the substrate 10 by being tied with hemp rope. A 0.5 mm thick foam layer is provided between the first feeder 31 and the substrate 10 to ensure that the first feeder 31 and the first surface A maintain a sufficient distance.

[0110] The first oscillator 211 , the second oscillator 212 and the third oscillator 213 form a coupling resonance point, which serves as a first radiation portion corresponding to the low frequency band (900 MHz) and provides a larger low frequency bandwidth.

[0111] The fourth vibrator 221 and the fifth vibrator 222 are also arranged on the reverse side of the substrate, forming a second radiation part to cover the high frequency band (5.8 GHz). The fourth vibrator 221 and the fifth vibrator 222 both adopt a "U"-shaped vibrator structure, and the total length of the two is controlled within the range of 1 / 8 to 3 / 4 of the high frequency resonance wavelength.

[0112] The second feeder 32 runs on the reverse side of the substrate 10 and also uses a coaxial line. The fourth oscillator 221 is connected to the inner conductor of the coaxial line 32, and the fifth oscillator 222 is connected to the outer conductor of the coaxial line 32. Similar to the first feeder 31, the second feeder 32 is also fixed to the substrate 10 by bundling through multiple groups of hemp ropes passing through the substrate 10, and a 0.5 mm thick foam layer is also provided between the second surface B of the substrate 10 and the second feeder 32 to ensure the distance between the second feeder 32 and the second surface B.

[0113] Figure 4 A schematic diagram of the S parameters of the antenna provided by an embodiment of the present invention in the low frequency band. Figure 5 A schematic diagram of the S parameters of the antenna provided by an embodiment of the present invention in the high frequency band.

[0114] like Figure 4 and Figure 5 As shown, the antenna provided in the above embodiment can work in 0.94 GHz to 1.11 GHz (low frequency band) and 5.18 GHz to 6.0 GHz (high frequency band). Therefore, it can cover the two frequency bands of 900 MHz (17.8%) and 5.8 GHz.

[0115] Figure 6 and Figure 7 The antenna directional diagrams 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 6 and Figure 7 As shown, the antenna provided by the embodiment of the present invention has good directivity in both low-frequency band and high-frequency band, good omnidirectionality, and no defects in a specific direction.

[0116] 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.

[0117] Figure 8 The structure diagram of the wireless signal processing device provided by the embodiment of the present invention is as follows. Figure 8 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] The embodiments of the present invention further provide application scenarios of the antennas provided in the above embodiments. Fig. 9 A schematic diagram of the structure of an antenna provided in an embodiment of the present invention applied to a drone.

[0123] 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.

[0124] Therefore, the antenna 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 body. Fig. 9 As shown, the drone may include: a fuselage 400, motors (510, 520) and an antenna.

[0125] 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.

[0126] 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.).

[0127] The antenna may be installed and accommodated in the landing gear 410 (eg Fig. 9 As shown, in the rear 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.

[0128] 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.

[0129] 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, It is characterized in that include: A substrate having a first surface and a second surface opposite to the first surface; A first vibrator and a second vibrator are arranged on the first surface, the first vibrator and the second vibrator are in opposite directions, the first vibrator is located at an end close to the head of the substrate, and the second vibrator is located at an end close to the root of the substrate; the first vibrator and the second vibrator are symmetrically arranged along the axial direction of the substrate; A third vibrator is arranged on the second surface, wherein the third vibrator is mirror-symmetrical with a part of the structure of the first vibrator and is connected to the second vibrator, so that the first vibrator, the second vibrator and the third vibrator form a coupling resonance point; A feeder connected to the first oscillator, the second oscillator and the third oscillator; a fourth vibrator and a fifth vibrator disposed on the second surface; The fourth vibrator is symmetrically arranged with the fifth vibrator and has opposite directions, and the fourth vibrator is directed toward one end of the head of the substrate; The feeder includes a first feeder and a second feeder; The first feed line runs on the first surface of the substrate and is connected to the first vibrator, the second vibrator and the third vibrator; The second feed line runs on the second surface of the substrate and is connected to the fourth vibrator and the fifth vibrator.

2. The antenna according to claim 1, It is characterized in that The first feeder line and the second feeder line are coaxial lines; The first dipole is connected to the inner conductor of the first feeder, and the second dipole and the third dipole form a passage connected to the outer conductor of the first feeder; The fourth dipole is connected to the inner conductor of the second feeder line, and the fifth dipole is connected to the outer conductor of the second feeder line.

3. The antenna according to claim 1, It is characterized in that A difference between an effective length of the first vibrator and an effective length of the second vibrator is greater than zero and less than a preset length threshold.

4. The antenna according to claim 1 or 2, It is characterized in that The first vibrator comprises: a first vibrator body having a predetermined length extending in a radial direction of the substrate; A pair of first vibrating arms are respectively formed at two ends of the first vibrator body and extend along the axial direction of the substrate; A first microstrip line is arranged on the symmetry axis of the first vibrator, the length of the first microstrip line is greater than the vibrating arm, and the first microstrip line is connected to the vibrator body; A pair of second microstrip lines are arranged between the first microstrip line and the first vibrator arm, wherein the second microstrip lines are longer than the first microstrip line and are connected to the first vibrator body.

5. The antenna according to claim 4, It is characterized in that The third oscillator is mirror-symmetrical to the first oscillator body and a pair of the second microstrip lines.

6. The antenna according to claim 1 or 2, It is characterized in that The second vibrator comprises: a second vibrator body having a predetermined length extending in a radial direction of the substrate; A pair of second vibrating arms, wherein the second vibrating arms are formed near the end of the second vibrator body and extend along the axial direction of the substrate; A pair of third microstrip lines, wherein the third microstrip lines are arranged between a pair of the second vibration arms.

7. The antenna according to claim 6, It is characterized in that The third microstrip line extends to one end of the base plate; the width of the third microstrip line is greater than that of the second vibration arm.

8. The antenna according to any one of claims 1 or 2, It is characterized in that The fourth vibrator includes: a fourth vibrator body and a pair of fourth vibrating arms formed by two ends of the fourth vibrator extending along the axial direction of the substrate.

9. The antenna according to any one of claims 1 or 2, It is characterized in that The first vibrator, the second vibrator and the third vibrator constitute a first radiating part, and the fourth vibrator and the fifth vibrator constitute a second radiating part; The first radiating portion corresponds to a first frequency band; the second radiating portion corresponds to a second frequency band, and has a length between 1 / 8 and 3 / 4 of a resonant wavelength of the second frequency band; and the frequency of the first frequency band is higher than that of the second frequency band.

10. The antenna according to claim 9, It is characterized in that The first frequency band is a 900 MHz frequency band, and the second frequency band is a 5.8 GHz frequency band.

11. The antenna according to any one of claims 1 to 3, It is characterized in that The antenna further comprises: a pad body having a preset size, The pad is arranged between the feeder and the substrate so as to keep the feeder at a distance from the substrate.

12. The antenna according to claim 11, It is characterized in that The cushion body comprises: a foam layer, a plastic frame or a wooden frame.

13. The antenna according to claim 11, It is characterized in that The method of fixing the feeder and the pad body on the substrate includes: bundling fixation or gluing fixation.

14. A wireless signal processing device, It is characterized in that include: The antenna according to any one of claims 1 to 13, 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.

15. A drone, It is 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 13, mounted in the landing gear.

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