Antennas, wireless signal processing equipment and drones

Abstract

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 flat first surface; a first radiating portion arranged on the first surface of the substrate, the first radiating portion including: a first vibrator and a second vibrator, the second vibrator being located behind the first vibrator; a second radiating portion arranged on the first surface of the substrate, the second radiating portion including: a third vibrator; the third vibrator and the second vibrator are arranged close to each other, with a similar frequency and effective length of the vibrator arm, so that the third vibrator and the second vibrator are coupled to each other. The antenna adopts reasonable wiring and structural design, and can be implemented on a substrate with a smaller volume, meeting the use requirements of a multi-band antenna. Moreover, the radiating portions corresponding to the mid-frequency band and the low-frequency band are coupled to each other, which can effectively enhance the mid- and low-frequency 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 devices such as drones that require long-distance wireless data transmission. With the continuous development of society, more and more frequency bands are used in wireless transmission, and the demand for multi-band antennas is increasing.

[0003] When the frequencies of multiple antenna bands are close, complex antenna designs are often required to meet the needs of use. However, these complex antenna designs are 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 the complex structure of the existing multi-frequency antenna.

[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 first surface;

[0007] A first radiating portion disposed on the first surface of the substrate, the first radiating portion comprising: a first oscillator and a second oscillator facing opposite directions;

[0008] A second radiating portion is arranged on the first surface of the substrate, the second radiating portion comprises: a third vibrator; the third vibrator and the second vibrator are arranged close to each other and have similar frequencies and vibrator arm effective lengths, so that the third vibrator and the second vibrator are coupled to each other;

[0009] The feeding line is connected with the first oscillator, the second oscillator and the third oscillator to form a grounding point and a feeding point.

[0010] Optionally, both the first vibrator and the second vibrator have a first vibrator shape; the first vibrator shape includes a vibrating body with bent portions at two ends and a pair of vibrating arms formed by extending the bent portions by a predetermined length.

[0011] Optionally, the first vibrator, the second vibrator and the third vibrator are all axially symmetrically distributed.

[0012] Optionally, a ratio of the effective lengths of the vibrator arms of the first vibrator and the second vibrator is within a preset first numerical range; the first numerical range is a numerical range formed by floating up and down preset numerical values ​​based on 5.

[0013] Optionally, the second oscillator is a front oscillator with an opening facing a direction opposite to an extension direction of the feeder line, and the first oscillator is a rear oscillator with an opening facing a direction identical to an extension direction of the feeder line.

[0014] Optionally, the second radiating portion further includes: a microstrip line; the third dipole has a first dipole shape, the microstrip line is a straight conductor, arranged on the symmetry axis of the third dipole, and forms a second dipole shape with the third dipole.

[0015] Optionally, a length ratio of the microstrip line and the third oscillator is within a preset second numerical range; the second numerical range is a numerical range formed by floating up and down preset numerical values ​​based on 4.

[0016] Optionally, the total length of the vibrating body and the vibrating arm of the first vibrator is between 1 / 8 and 3 / 4 of the low-frequency resonance wavelength; the total length of the vibrating body and the vibrating arm of the third vibrator is between 1 / 8 and 3 / 4 of the medium-frequency resonance wavelength.

[0017] Optionally, the antenna further includes: a third radiating portion symmetrically distributed on the first surface and the second surface; the second surface is the reverse side of the first surface; the third radiating portion includes: a fourth dipole, a fifth dipole, a sixth dipole and a seventh dipole;

[0018] The fourth vibrator and the fifth vibrator facing opposite directions are symmetrically arranged on the first surface; the sixth vibrator and the seventh vibrator facing opposite directions are symmetrically arranged on the second surface.

[0019] Optionally, the fourth vibrator, the fifth vibrator, the sixth vibrator and the seventh vibrator all have a first vibrator shape; the first vibrator shape includes a vibrating body with bending portions at two ends and a pair of vibrating arms formed by extending the bending portions by a predetermined length.

[0020] Optionally, the antenna further includes: a pair of air-avoiding grooves opened on the substrate; the pair of air-avoiding grooves are symmetrically arranged and located between the vibrating arms of the fourth vibrator.

[0021] Optionally, the total length of the vibrating body and the vibrating arm of the fourth vibrator is between 1 / 8 and 3 / 4 of the high-frequency resonance wavelength.

[0022] Optionally, the fifth and seventh oscillators are front oscillators whose openings are facing in a direction opposite to the extending direction of the feeder line, and the fourth and sixth oscillators are rear oscillators whose openings are facing in a direction identical to the extending direction of the feeder line.

[0023] Optionally, the feeder includes a first feeder arranged on the first surface and a second feeder arranged on the second surface; three grounding points are provided on the second feeder.

[0024] Optionally, the first feeder and the second feeder are coaxial lines; the front oscillator is connected to the inner conductor of the coaxial line, and the rear oscillator is connected to the outer conductor of the coaxial line, forming one feeding point and three grounding points.

[0025] Optionally, the frequency band corresponding to the first radiating portion is 978 MHz, the frequency band corresponding to the second radiating portion is 1.09 GHz, and the frequency band corresponding to the third radiating portion is 5.8 GHz.

[0026] 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.

[0027] 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 tripod and a propeller; a motor installed at the connection between the fuselage and the tripod, for providing flight power for the drone; and the antenna as described above, installed on the tripod.

[0028] The antenna of the embodiment of the present invention adopts reasonable wiring and structural design, and can be implemented on a small substrate to meet the use requirements of multi-band antennas. Moreover, the radiation parts corresponding to the mid-frequency band and the low-frequency band are coupled with each other, which can effectively enhance the mid- and low-frequency signals.

Brief Description of the Drawings

[0029] 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.

[0030] Figure 1 A schematic diagram of a first surface of an antenna provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of a second surface of an antenna provided by an embodiment of the present invention;

[0032] Figure 3 A schematic structural diagram of a first vibrator provided in an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the medium and low frequency S parameters of the antenna provided in an embodiment of the present invention;

[0034] Figure 5 A schematic diagram of high-frequency S parameters of an antenna provided in an embodiment of the present invention;

[0035] Figure 6 The directional diagram of the antenna provided by the embodiment of the present invention in the low frequency band;

[0036] Figure 7 The directional diagram of the antenna provided by the embodiment of the present invention in the mid-frequency band;

[0037] Figure 8 The directional diagram of the antenna provided by the embodiment of the present invention in the high frequency band;

[0038] Fig. 9 A schematic diagram of a wireless signal processing device provided by an embodiment of the present invention;

[0039] Fig.10 A schematic diagram of an antenna provided in an embodiment of the present invention in an application scenario of a drone. [Specific implementation method]

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Figure 1 A schematic diagram of the front structure of an antenna provided in an embodiment of the present invention. Figure 2 A schematic diagram of the back structure of the 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 and back sides of the substrate 10, and are not used to define the surface.

[0044] like Figure 1 and Figure 2 As shown, the antenna mainly includes a substrate 10 as the antenna structure basis, a radiation part (21, 22, 23) arranged on a first surface A and a second surface B of the substrate and composed of a vibrator with a specific structural shape, and a feeder line (31, 32) connected to the vibrator to form a feeding point and a grounding point.

[0045] 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 long rectangle). It has a relatively flat shape, forming a flat first surface and a flat second surface.

[0046] "Radiating part" refers to a resonant unit used to receive or transmit 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 with a specific length fixed to the surface of the substrate 10 in any suitable form (such as patch type). It realizes the reception or transmission of 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, a second radiating part 22 and a third radiating part 23, a total of three radiating parts.

[0047] Each radiating part corresponds to a wireless signal of a different frequency band. Among them, the first radiating part 21 can correspond to a low-frequency signal, the second radiating part 22 corresponds to a medium-frequency signal, and the third radiating part 23 can correspond to a high-frequency signal (such as a 5G full frequency band).

[0048] In some embodiments, Figure 1 As shown, the first radiating portion 21 includes a first oscillator 211 and a second oscillator 212 , and the second radiating portion 22 includes a third oscillator 221 .

[0049] The openings between the first vibrator 211 and the second vibrator 212 face opposite directions and are respectively referred to as a “rear vibrator” and a “front vibrator” in this embodiment.

[0050] Specifically, the opening direction of the first oscillator 211 is the same as the extension direction of the feed line 31, while the opening direction of the second oscillator 212 is opposite to the extension direction of the feed line 31. Figure 1 As shown, the second dipole 212 is located farther away from the antenna root (i.e., the extension direction of the feeder) than the first dipole 211, and belongs to the front area of ​​the antenna. Therefore, the first dipole 211 can be called the "rear dipole" and the second dipole 212 can be called the "front dipole".

[0051] The third vibrator 221 is arranged close to the second vibrator 212, and is close to each other. "Close to each other" means that the interval between the second vibrator 212 and the third vibrator 221 on the substrate is less than a certain threshold or the interval between the two is within a smaller value range. The interval between the two can be set and adjusted according to the actual needs.

[0052] The third vibrator 221 and the second vibrator 211 also have similar frequencies and vibrator arm effective lengths. "Close" is similar to the above-mentioned "close to each other", and also means that the difference between the two is less than a certain threshold or within a smaller value range.

[0053] In this embodiment, the second vibrator 212 and the third vibrator 221 are positioned close to each other and have similar frequencies and effective lengths of the vibrator arms in order to couple the second vibrator and the third vibrator with each other.

[0054] Therefore, those skilled in the art can adjust one or more of the proximity of the position between the second vibrator 212 and the third vibrator 221, the proximity of the frequency, and the effective length of the vibrator arm according to actual needs, so that the second vibrator 212 and the third vibrator 221 are coupled to each other. All adjustments, changes or replacements made to the present application to achieve the mutual coupling between the second vibrator 212 and the third vibrator 221 belong to the protection scope of the present application.

[0055] The antenna structure provided in the embodiment of the present invention can effectively enhance the coverage of intermediate frequency and low frequency signals through the mutual coupling of the second oscillator and the third oscillator, meet the needs of intermediate frequency signals and low frequency signals, especially when the frequency bands of the intermediate frequency signal and the low frequency signal are relatively close.

[0056] In some embodiments, Figure 1 As shown, the first vibrator 211, the second vibrator 212 and the third vibrator 221 may be an axisymmetric distribution structure. The "axisymmetric distribution" refers to a symmetrical distribution along the central axis of the substrate 10. In other words, the first vibrator 211, the second vibrator 212 and the third vibrator 221 all have a bilaterally symmetrical shape to ensure signal coverage of a specific frequency band.

[0057] Specifically, the first vibrator 211 and the second vibrator 212 can both adopt a structure of a "first vibrator shape". Figure 3 The first oscillator shown is used as an example for detailed description:

[0058] like Figure 3 As shown, the "first vibrator shape" can be roughly considered to be composed of a vibrator body 211a and a pair of vibrating arms 211b. The two ends of the vibrator body 211a are bent portions 211c with a certain bending angle (such as 90° or a larger or smaller angle). The vibrating arms 211b are formed by the bent portion 211c extending a predetermined length along a straight line or in other forms (such as a serpentine shape), thereby forming a vibrator shape similar to a "U" shape.

[0059] The predetermined length is determined according to the signal requirements of the radiating part or the antenna, and can be set by a technician according to actual conditions.

[0060] In other embodiments, the second radiating portion 22 may further include a microstrip line 222. The microstrip line 222 is combined with the third dipole 221 to form a shape structure different from the first dipole shape, referred to as a "second dipole shape" in this specification, to meet the requirements of the intermediate frequency signal.

[0061] like Figure 1 As shown, the third vibrator 221 can adopt a vibrator shape similar to the second vibrator 212 (i.e., the first vibrator shape), and the two are close to each other and have the same opening direction. The microstrip line 222 is in a straight line shape and is arranged on the symmetry axis of the third vibrator 221 (i.e., the central axis of the substrate 10), thereby forming a second vibrator shape similar to the "mountain" shape, which is different from the "first vibrator shape" and the third vibrator 221.

[0062] In some other embodiments, the third radiation part 23 corresponding to the high-frequency signal may be symmetrically distributed on the first surface A and the second surface B of the substrate. That is, the third radiation part 23 on the first surface A and the second surface B has the same oscillator structure.

[0063] like Figure 1 and Figure 2 As shown, the third radiating portion 23 can be roughly divided into four parts: a fourth oscillator 231 , a fifth oscillator 232 , a sixth oscillator 233 and a seventh oscillator 234 .

[0064] The fourth vibrator 231 and the fifth vibrator 232 are both arranged on the first surface A, and are mirror-symmetrical with each other, with opposite opening directions. Similarly, the sixth vibrator 233 and the seventh vibrator 234 are arranged on the second surface B, and are also mirror-symmetrical with each other, with opposite opening directions.

[0065] Specifically, the fourth vibrator 231 , the fifth vibrator 232 , the sixth vibrator 233 , and the seventh vibrator 234 may also adopt the same axially symmetrical distribution structure as the first vibrator 211 , the second vibrator 212 , and the third vibrator 221 .

[0066] In terms of position, the fourth oscillator 231 is closer to the root of the substrate than the fifth oscillator 232, and the sixth oscillator 233 is closer to the root of the substrate than the seventh oscillator 234 (i.e., the fourth oscillator 231 and the sixth oscillator 233 extend in the same direction as the feeder). Therefore, the fifth oscillator 232 and the seventh oscillator 234 can be called "front oscillators", and the fourth oscillator 231 and the sixth oscillator 233 can be called "rear oscillators".

[0067] In some embodiments, the fourth vibrator 231, the fifth vibrator 232, the sixth vibrator 233 and the seventh vibrator 234 can all adopt the "first vibrator shape" described in the above embodiments, that is, a vibrator shape similar to a "U" shape, to meet the use requirements of high-frequency signals.

[0068] In a preferred embodiment, the substrate 10 may further be provided with a space-avoiding groove 40. The space-avoiding groove 40 may be provided in pairs in the area where the third radiating portion 23 is located, such as symmetrically arranged between the two vibration arms of the sixth vibrator 233 (or the two vibration arms of the fourth vibrator 231) of the third radiating portion.

[0069] like Figure 2 As shown, the additionally provided air-avoiding groove 40 can improve the capacitance structure formed between the two vibration arms 233 b of the sixth vibrator 233 , and can also reduce the above-mentioned mutual coupling, thereby preventing the second vibrator and the third vibrator from interfering with the high-frequency signal of the medium and low-frequency signal.

[0070] The feeder (31, 32) is a signal transmission path connecting the "radiating part" and other signal processing systems. It usually has good shielding and signal transmission performance to prevent the wireless signal received or transmitted by the "radiating part" from being adversely interfered during the transmission process. It can specifically use any suitable type of wire, such as a coaxial line.

[0071] like Figure 1 and Figure 2 As shown, the antenna provided in this embodiment can be provided with a first feed line 31 and a second feed line 32 on the first surface A and the second surface B of the substrate 10, respectively, to provide a suitable number of grounding points and feeding points. Figure 2 The second feed line 32 is shown to be triple-grounded, with three different grounding points 32a, 32b and 32c.

[0072] In some embodiments, a coaxial line can be used as a feed line. The first oscillator 211 of the first radiating portion 21 serves as a front oscillator and can be electrically connected to the inner conductor of the coaxial line. The second oscillator 212 serves as a rear oscillator and is electrically connected to the outer conductor of the coaxial line to form one feeding point and three grounding points, thereby ensuring the directivity of the resonance.

[0073] Similarly, the fourth oscillator 231 and the sixth oscillator 233 of the third radiating portion 23 serve as front oscillators connected to the inner conductor of the coaxial line, and the fifth oscillator 232 and the seventh oscillator 234 are connected to the outer conductor of the coaxial line, also forming a feeding point and three grounding points to ensure the directivity of the resonance.

[0074] It should be noted that Figure 1 and Figure 2 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 and Figure 2 shown. Figure 1 and Figure 2 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.

[0075] Those skilled in the art will appreciate that the length of the dipole, or the effective length of the dipole arm, is an important dimension parameter of the antenna, and is closely related to the frequency band of wireless signal reception or transmission.

[0076] In some embodiments, the ratio of the effective lengths of the vibrator arms between the first vibrator 211 and the second vibrator 212 corresponding to the low-frequency signal can be controlled within a preset first value range.

[0077] The preset first numerical range refers to a numerical range formed by floating the preset numerical value up and down with 5 as the reference. That is, the ratio of the effective length of the vibrator arm of the first vibrator 211 and the second vibrator 212 can be controlled to be about 5.

[0078] The specific preset value is set or determined by the technicians according to actual conditions such as experience, experimental results or debugging results, and can also be expressed in any suitable form (such as percentage). For example, based on 5, the floating range is 1% (i.e., the preset value is 0.05).

[0079] Correspondingly, in the second radiating portion 22 corresponding to the intermediate frequency signal using the above-mentioned “mountain”-shaped dipole shape (ie, the second dipole shape), the length ratio between the third dipole 221 and the microstrip line 222 can be controlled within a preset second numerical range.

[0080] The second numerical range is a numerical range formed by floating up and down preset values ​​based on 4. That is, the length ratio between the third oscillator 221 and the microstrip line 222 needs to be controlled at about 4. Of course, the floating up and down preset values ​​of the second numerical range and the preset values ​​of the first numerical range can be different values, and there is no mutual dependence between the first numerical range and the second numerical range.

[0081] In other embodiments, based on the differences in signal frequency bands corresponding to different radiating parts, it is also necessary to control the size and length of the oscillator to ensure that the use requirements of the antenna are met.

[0082] Specifically, the length of the first vibrator 211 (such as the sum of the length of the vibrating arm and the vibrating body) using a "U"-shaped vibrator needs to be controlled between 1 / 8 and 3 / 4 of the low-frequency resonance wavelength. The length of the fourth vibrator 231 using a "U"-shaped vibrator needs to be controlled between 1 / 8 and 3 / 4 of the high-frequency resonance wavelength. The length of the third vibrator 221 using a "mountain"-shaped vibrator needs to be controlled between 1 / 8 and 3 / 4 of the intermediate-frequency resonance wavelength.

[0083] The embodiment of the present invention provides a specific example of a triple-band antenna that can operate in three frequency bands: 978 MHz, 1.09 GHz, and 5.8 GHz.

[0084] like Figure 1 and Figure 2 As shown, the triple-band antenna includes: a substrate 10, a first dipole 211, a second dipole 212, a third dipole 221, a microstrip line 222, a fourth dipole 231, a fifth dipole 232, a sixth dipole 233, a seventh dipole 234, a first feed line 31, a second feed line 32, a feed point 33, three grounding points (32a, 32b, 32c) and a gap 40.

[0085] The first vibrator 211 and the second vibrator 212 are both in a "U"-shaped vibrator shape, and the total length of the first vibrator 211 is 1 / 8 to 3 / 4 of the low-frequency (978 MHz) resonance wavelength.

[0086] The first dipole 211 is used as the rear dipole, and the second dipole 212 is used as the front dipole, forming the first radiating portion 21. The length of the front dipole is about one fifth of the rear dipole, the front dipole is connected to the inner conductor of the coaxial line (first feeder 31), and the rear dipole is connected to the outer conductor of the coaxial line (first feeder 31), thereby connecting with the first feeder 31 and the second feeder 32, forming a feeding point and three grounding points.

[0087] The third vibrator 221 and the microstrip line 222 form a "mountain"-shaped vibrator. The length of the third vibrator 221 is controlled to be 1 / 8 to 3 / 4 of the resonance wavelength of the intermediate frequency (1.09 GHz), and it is connected to the outer conductor of the coaxial line (the second feeder 32). In addition, the third vibrator 221 and the second vibrator 212 have similar frequencies and vibrator arm effective lengths, and the two are coupled to each other to enhance the coverage of medium and low frequency signals.

[0088] The fourth vibrator 231 , the fifth vibrator 232 , the sixth vibrator 233 and the seventh vibrator 234 are all in a “U”-shaped vibrator shape, forming the third radiation part 23 . The pair of air-avoiding slots 40 are symmetrically arranged between the two arms of the sixth vibrator 233 .

[0089] Among them, the fourth vibrator 231 and the fifth vibrator 232 are mirror-symmetrical and are arranged on the first surface A of the substrate 10, the fourth vibrator 231 is the rear vibrator, and the fifth vibrator 232 is the front vibrator. The length of the fourth vibrator is controlled to be 1 / 8 to 3 / 4 of the high frequency (5.8GHz) resonance wavelength. The sixth vibrator 233 and the seventh vibrator 234 are mirror-symmetrical and are arranged on the second surface B of the substrate 10, the sixth vibrator 233 is the rear vibrator, and the seventh vibrator 234 is the front vibrator.

[0090] The second feeder 32 is grounded three times and has three grounding points (32a, 32b, 32c). The front oscillator is connected to the inner conductor of the coaxial line, and the rear oscillator is connected to the outer conductor of the coaxial line, thereby connecting with the second feeder 32 to form a feeding point and three grounding points.

[0091] Figure 4 A schematic diagram of the S parameters of the antenna provided in an embodiment of the present invention in the medium and low frequency bands. 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.

[0092] like Figure 4 and Figure 5 As shown, the antenna provided in the above embodiment can work in 920MHz~1.12MHz (middle and low frequency band) and 5.6GHz~6.0GHz (high frequency band). Therefore, it can achieve coverage of the three frequency bands of 978MHz, 1.09GHz and 5.8GHz.

[0093] Figures 6 to 8 The antenna radiation patterns of the antenna provided in the embodiments of the present invention in the low frequency band, the medium frequency band and the high frequency band are shown respectively. Figures 6 to 8 As shown, the antenna provided by the embodiment of the present invention has good directivity in the three frequency bands of low frequency band, medium frequency band and high frequency band, good omnidirectionality, and no defects in a specific direction.

[0094] 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.

[0095] Fig. 9 The structure diagram of the wireless signal processing device provided by the embodiment of the present invention is as follows. Fig. 9 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.

[0096] 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 three frequency bands.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] The embodiments of the present invention further provide application scenarios of the antennas provided in the above embodiments. Fig.10 A schematic diagram of the structure of an antenna provided in an embodiment of the present invention applied to a drone.

[0101] 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.

[0102] 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.10 As shown, the drone may include: a fuselage 400, motors (510, 520) and an antenna.

[0103] 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.10 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.

[0104] 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.).

[0105] The antenna may be installed and accommodated in the landing gear 410 (eg Fig.10 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.

[0106] 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.10 Drone shown.

[0107] 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 having a flat first surface; A first radiating portion disposed on the first surface of the substrate, the first radiating portion comprising: a first oscillator and a second oscillator facing opposite directions; A second radiating portion is arranged on the first surface of the substrate, the second radiating portion comprises: a third vibrator; the third vibrator and the second vibrator are arranged close to each other and have similar frequencies and vibrator arm effective lengths, so that the third vibrator and the second vibrator are coupled to each other; A feeder line connected to the first oscillator, the second oscillator and the third oscillator to form a grounding point and a feeding point; The first vibrator, the second vibrator and the third vibrator are all axially symmetrically distributed; the first vibrator and the second vibrator both have a first vibrator shape, which includes a vibrating body with bending portions at two ends and a pair of vibrating arms formed by extending the bending portions by a predetermined length.

2. The antenna according to claim 1, characterized in that The ratio of the effective lengths of the vibrator arms of the first vibrator and the second vibrator is within a preset first value range; The first numerical range is a numerical range formed by floating up and down preset values ​​based on 5.

3. The antenna according to claim 1, characterized in that The second oscillator is a front oscillator with an opening facing a direction opposite to the extending direction of the feeder line, and the first oscillator is a rear oscillator with an opening facing a direction identical to the extending direction of the feeder line.

4. The antenna according to claim 1, characterized in that: The second radiation portion further includes: a microstrip line; The third vibrator has a first vibrator shape, and the microstrip line is a straight conductor, which is arranged on the symmetry axis of the third vibrator and forms a second vibrator shape with the third vibrator.

5. The antenna according to claim 4, characterized in that: The length ratio of the microstrip line and the third oscillator is within a preset second numerical range; the second numerical range is a numerical range formed by floating up and down preset values ​​based on 4.

6. The antenna according to claim 4, characterized in that: The total length of the vibrating body and the vibrating arm of the first vibrator is between 1 / 8 and 3 / 4 of the low-frequency resonance wavelength; the total length of the vibrating body and the vibrating arm of the third vibrator is between 1 / 8 and 3 / 4 of the medium-frequency resonance wavelength.

7. The antenna according to claim 3, characterized in that: The antenna further includes: a third radiating portion symmetrically distributed on the first surface and the second surface; the second surface is the reverse side of the first surface; The third radiating part includes: a fourth vibrator, a fifth vibrator, a sixth vibrator and a seventh vibrator; The fourth vibrator and the fifth vibrator facing opposite directions are symmetrically arranged on the first surface; the sixth vibrator and the seventh vibrator facing opposite directions are symmetrically arranged on the second surface.

8. The antenna structure according to claim 7, characterized in that: The fourth vibrator, the fifth vibrator, the sixth vibrator and the seventh vibrator all have the shape of the first vibrator; The first vibrator shape includes a vibrating body with bent portions at two ends and a pair of vibrating arms formed by extending the bent portions by a predetermined length.

9. The antenna structure according to claim 8, characterized in that: The antenna further comprises: a pair of air-avoiding grooves provided on the substrate; A pair of the air-avoiding grooves are symmetrically arranged and located between the vibrating arms of the fourth vibrator.

10. The antenna structure according to claim 9, characterized in that: The total length of the vibrating body and the vibrating arm of the fourth vibrator is between 1 / 8 and 3 / 4 of the high-frequency resonance wavelength.

11. The antenna structure according to claim 9, characterized in that: The fifth and seventh oscillators are front oscillators with openings facing in a direction opposite to the extending direction of the feeder line, and the fourth and sixth oscillators are rear oscillators with openings facing in the same direction as the extending direction of the feeder line.

12. The antenna according to claim 11, characterized in that The feed line comprises a first feed line arranged on the first surface and a second feed line arranged on the second surface; Three grounding points are arranged on the second feeder.

13. The antenna according to claim 12, characterized in that: The first feeder and the second feeder are coaxial lines; the front oscillator is connected to the inner conductor of the coaxial line, and the rear oscillator is connected to the outer conductor of the coaxial line, forming one feeding point and three grounding points.

14. The antenna according to claim 7, characterized in that: The frequency band corresponding to the first radiation part is 978 MHz, the frequency band corresponding to the second radiation part is 1.09 GHz, and the frequency band corresponding to the third radiation part is 5.8 GHz.

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

16. 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 14, mounted on the landing gear.

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