CN215220988U

CN215220988U - Antenna, wireless signal processing equipment and unmanned aerial vehicle

Info

Publication number: CN215220988U
Application number: CN202120623914.9U
Authority: CN
Inventors: 宋建平; 王建磊
Original assignee: Shenzhen Autel Intelligent Aviation Technology Co Ltd
Current assignee: Shenzhen Autel Intelligent Aviation Technology Co Ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-12-17
Anticipated expiration: 2031-03-26

Abstract

The utility model relates to an antenna technology field especially relates to an antenna, radio signal processing equipment and unmanned aerial vehicle. The antenna includes: a substrate having a first surface and a second surface opposite the first surface; the first vibrator and the second vibrator are arranged on the first surface, the directions of the first vibrator and the second vibrator are opposite, the first vibrator is positioned at one end close to the head of the substrate, and the second vibrator is positioned at one end close to the root of the substrate; the third oscillator is arranged on the second surface, is in mirror symmetry with a part of the structure of the first oscillator, and is conducted with the second oscillator, so that the first oscillator, the second oscillator and the third oscillator form a coupling resonance point; and the feeder line is connected with the first oscillator, the second oscillator and the third oscillator. The antenna adopts reasonable wiring and structural design, can realize larger bandwidth on a substrate with smaller volume, and overcomes the defect that a large-bandwidth antenna is difficult to miniaturize.

Description

Antenna, wireless signal processing equipment and unmanned aerial vehicle

[ technical field ] A method for producing a semiconductor device

The utility model relates to an antenna structure technical field especially relates to an antenna, radio signal processing equipment and unmanned aerial vehicle.

[ background of the invention ]

The antenna is a key component for realizing the transceiving of electromagnetic wave wireless signals. The performance of the wireless data transmission system has great influence on equipment such as unmanned planes and the like which need remote wireless data transmission. With the continuous development of electronic information technology, the requirements of wireless transmission on the number of coverage frequency bands and bandwidth are higher and higher. This presents a major challenge to the structural design of the antenna.

To meet the higher and higher bandwidth requirements, complex structural designs are often required to achieve larger bandwidths. However, the complicated structure of the antenna can make the volume of the antenna not be effectively controlled, and the miniaturization is difficult to realize, so that the antenna is difficult to be applied to small products such as unmanned aerial vehicles and remote controllers sensitive to size and structure.

[ summary of the invention ]

The embodiment of the utility model provides an aim at providing an antenna, wireless signal processing equipment and unmanned aerial vehicle, can solve current big bandwidth antenna structure complicacy, be difficult to miniaturized defect.

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

The antenna includes:

a substrate having a first surface and a second surface opposite the first surface;

the first vibrator and the second vibrator are arranged on the first surface, the directions of the first vibrator and the second vibrator are opposite, the first vibrator is positioned at one end close to the head of the substrate, and the second vibrator is positioned at one end close to the root of the substrate;

the third oscillator is arranged on the second surface, is in mirror symmetry with a part of the structure of the first oscillator, and is conducted with the second oscillator, so that the first oscillator, the second oscillator and the third oscillator form a coupling resonance point;

and the feeder line is connected with the first oscillator, the second oscillator and the third oscillator.

Optionally, the antenna further comprises: a fourth vibrator and a fifth vibrator provided on the second surface;

the fourth oscillator and the fifth oscillator are symmetrically arranged and have opposite directions, and the fourth oscillator faces one end of the head of the substrate.

Optionally, the feed lines comprise a first feed line and a second feed line;

the first feeder line runs on the first surface of the substrate and is connected with the first oscillator, the second oscillator and the third oscillator;

the second feeder line runs on the second surface of the substrate and is connected with the fourth oscillator and the fifth oscillator.

Optionally, the first feed line and the second feed line are coaxial lines;

the first oscillator is connected with an inner conductor of the first feeder line, and the second oscillator and the third oscillator form a passage to be connected with an outer conductor of the first feeder line;

the fourth oscillator is connected with the inner conductor of the second feeder line, and the fifth oscillator is connected with the outer conductor of the second feeder line.

Optionally, the first oscillator and the second oscillator are symmetrically arranged along an axial direction of the substrate.

Optionally, a difference between the effective length of the first oscillator and the effective length of the second oscillator is greater than zero and smaller than a preset length threshold.

Optionally, the first oscillator includes:

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

a pair of first vibrating arms extending in the axial direction of the substrate at both ends of the first vibrator body, respectively;

the first microstrip line is arranged on the symmetry axis of the first oscillator, the length of the first microstrip line is greater than that of the oscillator arm, and the first microstrip line is communicated with the oscillator main body;

the pair of second microstrip lines is arranged between the first microstrip line and the first vibrating arm, the length of the second microstrip lines is larger than that of the first microstrip lines, and the second microstrip lines are communicated with the first vibrator main body.

Optionally, the third oscillator is mirror-symmetrical to the first oscillator main body and the pair of second microstrip lines.

Optionally, the second oscillator includes:

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

a pair of second resonating arms formed to extend in the axial direction of the substrate at positions close to the ends of the second resonator main bodies;

and the third microstrip line is arranged between the second vibrating arms.

Optionally, the third microstrip line extends to one end of the base plate root; the width of the third microstrip line is larger than that of the second vibrating arm.

Optionally, the fourth element includes: and a pair of fourth vibrator arms formed by extending both ends of the fourth vibrator in the axial direction of the substrate.

Optionally, the first oscillator, the second oscillator and the third oscillator constitute a first radiation part, and the fourth oscillator and the fifth oscillator constitute a second radiation part;

the first radiation part corresponds to a first frequency band; the second radiation part corresponds to a second frequency band and has a size length between 1/8 and 3/4 of resonance wavelength of the second frequency band; the first frequency band is higher in frequency than the second frequency band.

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

Optionally, the antenna further comprises: a cushion body with a preset size is provided,

the pad body is arranged between the feeder line and the substrate so as to keep the distance between the feeder line and the substrate.

Optionally, the pad body comprises: a foam layer, a plastic frame or a wood frame.

Optionally, the fixing manner of fixing the feed line and the pad body on the substrate includes: and (4) bundling and fixing or pasting and fixing.

In order to solve the above technical problem, an embodiment of the present invention further provides the following technical solution: a wireless signal processing apparatus. The wireless signal processing apparatus includes: an antenna as described above for transmitting or receiving a wireless signal; the receiving path is used for analyzing the wireless signals received by the antenna so as to acquire information content contained in the wireless signals; and the transmitting path is used for loading the information content into the radio frequency carrier signal to form a wireless signal and transmitting the wireless signal through the antenna.

In order to solve the above technical problem, an embodiment of the present invention further provides the following technical solution: an unmanned aerial vehicle. This unmanned aerial vehicle includes: a fuselage having a landing gear thereon; the motor is arranged at the joint of the airframe and the undercarriage and used for providing flight power for the unmanned aerial vehicle; an antenna as described above, mounted within the landing gear.

The utility model discloses the antenna adopts reasonable wiring and structural design, utilizes first oscillator, second oscillator and the third oscillator that is located the base plate both sides respectively to constitute the coupling resonance point, can realize great bandwidth on the less base plate of volume, has overcome the defect that big bandwidth antenna is difficult to the miniaturization.

[ description of the drawings ]

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic structural diagram of an antenna according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first oscillator and a second oscillator provided in an embodiment of the present invention;

fig. 3 is a side view of an antenna provided by an embodiment of the present invention;

fig. 4 is a schematic diagram of a low frequency S parameter of an antenna provided in an embodiment of the present invention;

fig. 5 is a schematic diagram of a high-frequency S parameter of an antenna provided in an embodiment of the present invention;

fig. 6 is a directional diagram of an antenna provided in an embodiment of the present invention at a low frequency band;

fig. 7 is a directional diagram of an antenna at a high frequency band according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a wireless signal processing apparatus according to an embodiment of the present invention;

fig. 9 is the embodiment of the utility model provides an antenna uses the schematic diagram in the unmanned aerial vehicle application scene.

[ detailed description ] embodiments

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "inner", "outer", "bottom", and the like as used herein are used in the description to indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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

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

Fig. 1 is a schematic structural diagram of an antenna according to an embodiment of the present invention. In the present embodiment, for convenience of description, the front surface of the antenna is referred to as "first surface a", while the back surface thereof is referred to as "second surface B". The "first" and "second" are used only to distinguish the front and back sides of the substrate 10, and are not used to define the surface.

As shown in fig. 1, the antenna mainly includes a substrate 10 as a base of an antenna structure, an element (211, 212, 213, 221, 222) having a specific structural shape disposed on a first surface a and a second surface B of the substrate, and a feeding line (31,32) connected to the element.

The substrate 10 may be made of any type of material (e.g., plastic, foam), and has a non-conductive structure with a specific shape (e.g., trapezoid). It has a relatively flat shape, forming a planar first surface and a second surface.

The vibrator is a conductor (e.g., copper foil) having a specific shape and length and disposed on a surface of the substrate. The antenna can be fixed on the surface of the substrate in any suitable form (such as a patch type), and is exposed outside, and the reception or transmission of wireless signals of a specific frequency band is realized through the electromagnetic induction principle.

One or more elements may constitute a resonant unit for receiving or transmitting radio signals of a particular frequency band. In the present embodiment, such a resonance unit may be referred to as a "radiation section". In a multi-frequency antenna, there may be a plurality of radiation portions for covering or corresponding to different frequency bands, respectively.

In some embodiments, the substrate 10 may be provided with a first vibrator 211, a second vibrator 212, and a third vibrator 213, which constitute the first radiation portion 21 corresponding to the first frequency band.

Wherein the first vibrator 211 and the second vibrator 212 are arranged on the first surface a with their orientations being opposite. Specifically, as shown in fig. 1, the first vibrator 211 is oriented in the opposite direction to the extension direction of the feed line, and the second vibrator 212 is oriented in the same direction as the extension direction of the feed line.

In addition, the second vibrator 212 is located closer to the base of the substrate (i.e., the end through which the feed line passes away from the substrate) than the first vibrator 211. In other words, the first vibrator 211 is positioned closer to the head of the substrate. In the present embodiment, for the sake of convenience of description, an end close to the extending direction of the feed line is referred to as a "substrate root portion", and an end apart from the extending direction of the feed line is referred to as a "substrate head portion".

The third vibrator 213 is a vibrator provided on the opposite side (i.e., the second surface B) of the substrate. The third vibrator 213 has the same configuration as a part of the first vibrator 211. Which is in a "mirror-image" relationship with the structure of the first vibrator 211.

The mirror symmetry may also be referred to as mirror symmetry, meaning that the dipole structures located at two opposite surfaces of the substrate are symmetrical with respect to the plane of the substrate. In other words, the third transducer 213 can be regarded as a transducer structure formed by horizontally inverting a part of the transducer structure of the first transducer 211 to the second surface B.

Third transducer 213 is also in communication with or electrically connected to second transducer 212. In other words, third element 213 and second element 212 belong to the same path. Specifically, the third transducer 213 on the back side of the substrate 10 can be connected (e.g., connected to a conductive wire) with the second transducer 212 on the front side of the substrate 10 by passing through the substrate in any suitable manner.

In this embodiment, abundant utilization the space of base plate, arrange through above-mentioned reasonable antenna structure line, make first oscillator, second oscillator and third oscillator can constitute a coupling resonance point to very big promotion the bandwidth of first radiation portion, make the antenna realize the miniaturization in structure when satisfying the user demand of great bandwidth.

Therefore, one skilled in the art can adjust one or more of the effective lengths, the shapes of the elements, or other similar element parameters of the first element 211, the second element 212, and the third element 213 according to the actual needs (e.g., the frequency band corresponding to the first radiating portion). All adjustments, changes or substitutions made to the present application for realizing the mutual coupling of the first vibrator 211, the second vibrator 212 and the third vibrator 213 to constitute the coupled resonance point belong to the protection scope of the present application.

As will be understood by those skilled in the art, the length of the element (also referred to as the dimension length or effective length) is an important dimension parameter in the antenna, and is closely related to the frequency band of wireless signal reception or transmission.

In a preferred embodiment, the first element 211 may have an effective length slightly greater than the second element 212. The "slightly larger" means that the difference between the two is smaller than a certain threshold value or within a smaller numerical 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 in the range of zero to a preset length threshold.

The preset length threshold indicates the degree of difference between the effective lengths of the first element 211 and the second element 212. The length threshold is an empirical value, and can be selectively set by a technician according to actual conditions, so as to achieve the effect that the effective length of the first oscillator 211 is slightly larger than that of the second oscillator 212.

Fig. 2 is a schematic structural diagram of the first oscillator 211 and the second oscillator 212 according to an embodiment of the present invention. In the process of implementing the present application, it is surprisingly found that when the oscillator structure shown in fig. 2 is adopted, good antenna performance can be obtained on the premise of a small volume.

The first vibrator 211 and the second vibrator 212 are provided symmetrically in the axial direction of the substrate 40. In other words, the first vibrator 211 and the second vibrator 212 are symmetrical in structure on both sides of the axis of the substrate.

As shown in fig. 2, the first vibrator 211 may include: a first vibrator body 211a, a first vibrating arm 211b, a first microstrip line 211c, and a second microstrip line 211 d.

Here, the first vibrator body 211a is a conductor structure such as a microstrip line having a predetermined length extending in a radial direction of the substrate, which is a direction perpendicular to the axial direction of the substrate. The predetermined length is an empirical value and can be set by a skilled person as required by the actual situation.

The first vibrator arms 211b have a pair, are respectively located at both ends of the first vibrator body 211a, and are symmetrical along the axis of the substrate. The first vibrating arm 211b extends in the axial direction by a predetermined length toward the head of the substrate.

Similarly to the first oscillator arm 211b, the first microstrip line 211c extends from the first oscillator body by a predetermined length in the axial direction. Except that its position is on the symmetry axis of the first vibrator (i.e. the axis of the substrate), overlapping the symmetry axis. In other words, the first microstrip line 211c is located between the first vibrating arms 211b on both sides, and has a length greater than that of the first vibrating arm 211b, so as to combine with the first vibrating arm 211b and the vibrator body 211a into a vibrator shape similar to a "chevron".

Further, the second microstrip lines 211d are also disposed in pairs, and are respectively located at positions on both sides of the axis of the substrate, between the first microstrip line 211c and the first vibrating arm 211 b. Which is also communicated with the first vibrator body 211a and has a length greater than that of the first microstrip line 211c, thereby forming a complete first vibrator structure.

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

In some embodiments, as shown in fig. 1, the third vibrator disposed on the second surface B may have a vibrator structure similar to a shape of "pi", in a mirror-symmetrical relationship with the vibrator structure composed of the first vibrator body 211a of the first vibrator disposed on the first surface a and the pair of third microstrip lines 211 c.

With continued reference to fig. 2, the second element 212 may be roughly divided into: a second transducer main body 212a, a second horn 212b, and a third microstrip line 212 c.

Here, the second transducer body 212a has a predetermined length extending in the radial direction of the substrate, similar to the first transducer body 211 a.

The second arms 212b are also provided in pairs, and are formed to extend a predetermined length in the axial direction of the substrate at positions close to both ends of the second transducer body.

The third microstrip line 212c is disposed between the pair of second horn arms 212b and maintains symmetry along the axis of the substrate. Specifically, the third microstrip line 212c and the second vibrating arm 212b may have a certain inclination, so as to form a vibrator structure similar to a shape of "pi" with the second vibrator body 212a on the side of the axis of the substrate. Thus, the second vibrator 212 has a vibrator structure similar to a double "pi" shape as a whole.

In a preferred embodiment, a third microstrip line 212c extending to the end of the substrate root can be adopted, and the width w1 of the third microstrip line 212c is made larger than the width w2 of the second vibrating arm 212b, so as to improve the coverage of the antenna for low-frequency band signals.

In other embodiments, with continued reference to fig. 1, the antenna may further include a second radiating portion 22 composed of a fourth element 221 and a fifth element 222, in addition to the first radiating portion.

The second radiation portion 22 corresponds to a second higher frequency band, which is different from the frequency band corresponding to the first radiation portion 21. Thereby, the high frequency band can be covered by the second radiation portion, while the low frequency band is covered by the first radiation portion, thereby obtaining a dual-band antenna.

Of course, the first frequency band corresponding to the first radiation portion 21 and the second frequency band corresponding to the second radiation portion 22 may be set according to the actual requirement, and are not limited to a specific frequency band. The "first" and "second" are used only to distinguish the frequency bands corresponding to or covered by the two radiating parts, and indicate the relative high or low frequency between the two.

The fourth element 221 and the fifth element 222 may be symmetrically arranged and have dipole structures with opposite orientations. The fourth vibrator 221 is disposed toward one end of the head portion of the substrate, and the fifth vibrator 222 is disposed toward one end of the root portion of the substrate, and both are disposed symmetrically along a straight line in the radial direction of the substrate.

Specifically, the fourth vibrator 221 may be formed of a fourth vibrator body 221a and a pair of fourth vibrator arms 221b formed at both ends of the fourth vibrator to extend in the axial direction of the substrate, and may have a vibrator structure similar to a U-shape. The fifth vibrator 222 is symmetrical to the fourth vibrator 221, and for the sake of convenience, the description thereof will not be repeated.

The feeder lines (31,32) are lines connecting the "radiating section" and other signal processing systems to form a signal transmission path. It may in particular be a wire (like an axis) of any suitable type with sufficient shielding and signal transmission properties. In some embodiments, the feeding lines may also be provided as two first feeding lines 31 and two second feeding lines 32 corresponding to the two radiating portions, for transmitting the low-band signal and the high-band signal, respectively, and walking on the first surface a and the second surface B of the substrate 10.

As shown in fig. 1, the feed lines (31,32) generally need to extend from the position connected to the radiating portion to a certain length in the direction of the base portion of the substrate until leaving the substrate 10. In other words, the feed line 30 may pass or run on the substrate surface. "walking" refers to the situation where the feed lines (31,32) pass at the surface of the substrate 10 or at a distance from the surface of the substrate.

When the feed lines (31,32) transmit signals, they affect or interfere with the resonance signals of the radiation portions of the substrate surface that pass. In a preferred embodiment, the pad 40 is disposed to reduce interference generated when the feeder lines (31,32) transmit signals as much as possible.

Referring to fig. 1, the pad 40 is a filling structure disposed between the feed lines (31,32) and the substrate surface. Which has a predetermined size, and is padded below the feed line so that the feed line 30 is maintained at a sufficient distance from the substrate surface.

In the present embodiment, "size" refers to a combination of parameters (such as thickness, width or length) related to the shape of the pad body for characterizing the external contour of the filling structure, and the specific included parameters can be determined according to the actual shape of the pad body 40 or the distance to be reached between the feeding lines (31,32) and the substrate surface.

The predetermined dimension is an empirical value and can be determined by a person skilled in the art according to the needs of the actual situation, as long as the feed lines (31,32) are kept at a sufficient distance from the substrate.

The distance between the feed line (31,32) and the substrate may be characterized or measured by one or more parameters. For example, the perpendicular distance between the feed line (31,32) and the substrate surface may be used.

The vertical distance is an empirical value and only needs to be able to meet the use requirements. The technician can determine the minimum standard or the proper standard to be satisfied by the vertical distance between the feed lines (31,32) and the substrate surface in advance according to the needs of the actual situation (such as performance indexes and experimental results), and then select to use the pad body with the corresponding size.

Specifically, as a structure for the elevated feed lines, the pad 40 may be made of any suitable type of non-conductive material, including but not limited to foam, plastic, and wood. The pad body 40 may be made of different materials, and may have a corresponding structure. For example, when foam is used, the cushion body 40 may be a foam layer having a certain thickness (for example, foam having a thickness of 0.5 mm), and when wood or plastic is used, a wood frame or a plastic frame having a shape and structure adapted to the feeder lines (31,32) may be selected as the cushion body 40.

In other embodiments, in order to avoid relative movement between the feed lines (31,32) and the substrate 10 and the pad 40 during the daily use of the antenna, any suitable type of fixing means (such as adhesive fixing or binding fixing) may be adopted to fix the feed lines (31,32) on the pad 40, so as to keep the substrate 10, the pad 40 and the feed lines 30 integrally fixed.

Specifically, as shown in fig. 3, when the binding and fixing manner is adopted, the feeder lines (31,32) and the cushion body 40 may be bound and fixed on the substrate 10 by passing through a rope-like object such as a hemp rope 60 through a clearance groove 70 or other similar holes provided on the substrate 10 at a certain interval.

Specifically, an appropriate number of the twines 60 may be provided according to the distance or length of the feeder 30 running on the substrate 10. Of course, other non-conductive bundling materials (e.g., plastic ties) that do not interfere with the reception or transmission of signals by the antenna may be used.

When the sticking and fixing manner is adopted, the feeder lines (31,32), the pad body 40 and the substrate 10 can be stuck and fixed by a sticking object with sticking force such as a proper type of glue or an adhesive tape. Of course, the above binding and affixing means may be used in combination, and not necessarily independently. For example, the pad 40 may be fixed to the substrate 10 by adhesion, and the feeding lines (31,32) may be fixed to the pad 40 by bundling.

The embodiment of the utility model provides an antenna structure, through set up the filling structure who has reasonable size between feeder (31,32) and substrate surface, thereby bed hedgehopping feeder (31,32) and the feeder (31,32) of ensureing to walk on the base plate keep certain distance with substrate surface, can play and reduce feeder (31,32) and in the transmission signal in-process to the influence or the effect of interference that harmonic wave (such as high frequency signal or low frequency signal that the above-mentioned radiation portion corresponds) caused, be favorable to improving the wholeness ability of antenna.

It should be noted that the antenna shown in fig. 1 is only used for exemplary illustration, and one skilled in the art may add, adjust, replace or omit one or more functional components according to the needs of the actual situation, and is not limited to the one shown in fig. 1. The technical features involved in the embodiment of the antenna shown in fig. 1 may be combined with each other as long as they do not conflict with each other and may be applied independently in different embodiments as long as they do not rely on each other.

The embodiment of the utility model provides a can work at the specific example of the dual-frenquency antenna of two frequency channels of 900MHz and 5.8 GHz.

As shown in fig. 1, the dual band antenna includes: the resonator includes a substrate 10, a first vibrator 211, a second vibrator 212, a third vibrator 213, a fourth vibrator 221, a fifth vibrator 222, a sixth vibrator 233, a first feed line 31, a second feed line 32, and a pad 40.

The first oscillator 211 is shaped like a chevron oscillator, and a pair of inclined microstrip lines is added to the chevron oscillator. The second vibrator 212 is in a vibrator shape formed by overlapping two similar pi-shaped vibrators, and the effective length of the first vibrator is slightly larger than that of the second vibrator.

The third vibrator 213 is arranged on the reverse side, and has a vibrator shape like a letter "pi" (mirror symmetry with a part of the first vibrator 211). Third oscillator 213 communicates with second oscillator 212 and belongs to the same path.

The first feed line 31 is a coaxial line, the first oscillator 211 is connected to the inner conductor of the coaxial line 31, and the paths of the second oscillator 212 and the third oscillator 213 are connected to the outer conductor of the coaxial line 31. The first feed line 31 running on the front surface of the substrate 10 is fixed to the substrate 10 by being bundled with a hemp rope. A 0.5mm thick foam layer is provided between the first feed line 31 and the substrate 10 to ensure that a sufficient distance is maintained between the first feed line 31 and the first surface a.

The first vibrator 211, the second vibrator 212, and the third vibrator 213 constitute a coupling resonance point as a first radiation portion corresponding to a low frequency band (900MHz), providing a large low frequency bandwidth.

The fourth element 221 and the fifth element 222 are also arranged on the opposite side of the substrate, constituting a second radiating portion to cover the high frequency band (5.8 GHz). The fourth element 221 and the fifth element 222 both adopt a U-shaped element structure, and the total length of the two elements is controlled within the range of 1/8-3/4 of the high-frequency resonance wavelength.

The second feed line 32 runs on the opposite side of the substrate 10, likewise in a coaxial line. The fourth element 221 is connected to the inner conductor of the coaxial line 32, and the fifth element 222 is connected to the outer conductor of the coaxial line 32. Similarly to the first feed line 31, the second feed line 32 is also fixed to the substrate 10 in a lashed manner by a plurality of sets of twines passing through the substrate 10, and a foam layer of 0.5mm thickness is likewise provided between the second surface B of the substrate 10 and the second feed line 32, in order to ensure the distance between the second feed line 32 and the second surface B.

Fig. 4 is a schematic diagram of the S parameter of the antenna at the low frequency band according to the embodiment of the present invention. Fig. 5 is a schematic diagram of S parameters of the antenna at a high frequency band according to an embodiment of the present invention.

As shown in fig. 4 and 5, the antenna provided by the above embodiments can operate at 0.94GHz to 1.11GHz (low band) and 5.18GHz to 6.0GHz (high band). Thus, coverage for both the 900MHz (17.8%) and 5.8GHz bands can be achieved.

Fig. 6 and fig. 7 are antenna patterns of the antenna at the low frequency band and the high frequency band provided by the embodiment of the present invention, respectively. As shown in fig. 6 and 7, the antenna provided by the embodiment of the present invention has good directivity in both the low frequency band and the high frequency band, good omni-directionality, and no defect in a specific direction.

Based on the antenna that above embodiment provided, the embodiment of the utility model provides a still further provides a wireless signal processing equipment. The embodiment does not limit the specific implementation of the wireless signal processing device, and it can be any type or kind of electronic device for wireless signal transceiving, such as a remote controller, a smart terminal, a wearable device, or a signal transceiver of a mobile vehicle.

Fig. 8 is a schematic structural diagram of a wireless signal processing device according to an embodiment of the present invention. As shown in fig. 8, the wireless signal processing apparatus includes: an antenna 100, a transmit path 200, and a receive path 300. The antenna 100 is connected to the receiving path 200 or the transmitting path 300 by a feeder line to realize signal transmission therebetween.

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

The transmission path 200 is a functional module for loading information content to be transmitted to a carrier signal to form a wireless signal. It may be embodied in any type of electronic system, such as a radio frequency chip, formed by a combination of one or more electronic components, which may generate wireless signals.

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

In some embodiments, one of the transmit path 200 and the receive path 300 may be omitted, depending on the particular implementation of the wireless signal processing device. For example, when the wireless signal processing device is a remote controller, the receiving path 300 may be omitted and only the transmitting path 200 may be provided.

The embodiment of the utility model provides a still further application scene of the antenna that provides of above embodiment is provided. Fig. 9 is the utility model provides an antenna is applied to unmanned aerial vehicle's schematic structure diagram.

With the development of drone technology, it is always desirable to be able to reduce the fuselage volume of a drone as much as possible so that the drone can be adapted to perform flight tasks in more scenarios. However, in the case of the reduced size of the unmanned aerial vehicle body, higher requirements are placed on the size and the structure of the antenna, and the antenna is expected to be realized in a limited volume and a structure which is as simple as possible.

Therefore, use the embodiment of the utility model provides an antenna, the demand that satisfies the unmanned aerial vehicle that has less fuselage that can be fine about antenna volume and structure. As shown in fig. 9, the drone may include: a body 400, motors (510,520), and an antenna.

The main body structure of the drone is the fuselage 400, which can be made of any suitable material and has a structure and size suitable for use (e.g., a fixed wing drone shown in fig. 9). A number of different features, such as landing gear 410, propeller 420, camera 430, etc., may be provided on fuselage 400. Of course, one skilled in the art may also add or omit one or more functional components according to the needs of the actual situation, for example, a corresponding pan/tilt head 440 may be added to the camera 430.

Motors (510,520) are mounted to the fuselage 400 for providing flight power to the drone. The motors may be provided with one or more motors, which are disposed at corresponding positions of the body 400 (e.g., the body motor 510, the wing tip motor 520) to perform different functions (e.g., driving the propeller 420 to rotate, controlling the attitude of the body, etc.), respectively.

The antenna may be installed in the landing gear 410 (for example, in the rear landing gear indicated by reference numeral 410 shown in fig. 9) and used as one part of the wireless signal transceiver to receive a remote control operation command from a remote controller or feed back related data information (such as a captured image and an operation state parameter of the unmanned aerial vehicle) to the remote controller or another intelligent terminal.

Of course, based on the application scenario of the drone provided by the above embodiments, those skilled in the art can also apply the antenna provided by the above embodiments to other similar unmanned mobile vehicles without being limited to the drone shown in fig. 9.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An antenna, comprising:

2. The antenna of claim 1, further comprising: a fourth vibrator and a fifth vibrator provided on the second surface;

3. The antenna of claim 2, wherein the feed line comprises a first feed line and a second feed line;

4. The antenna of claim 3, wherein the first feed line and the second feed line are coaxial lines;

5. The antenna according to claim 1, wherein the first element and the second element are symmetrically arranged in an axial direction of the substrate.

6. The antenna of claim 1, wherein the difference between the effective length of the first element and the effective length of the second element is greater than zero and less than a predetermined length threshold.

7. The antenna of claim 4, 5 or 6, wherein the first element comprises:

8. The antenna according to claim 7, wherein the third element is mirror-symmetrical to the first element body and the pair of second microstrip lines.

9. The antenna of claim 4, 5 or 6, wherein the second element comprises:

and the third microstrip line is arranged between the second vibrating arms.

10. The antenna of claim 9, wherein the third microstrip extends to one end of the base plate root; the width of the third microstrip line is larger than that of the second vibrating arm.

11. The antenna of any of claims 2-4, wherein the fourth element comprises: and a pair of fourth vibrator arms formed by extending both ends of the fourth vibrator in the axial direction of the substrate.

12. The antenna according to any one of claims 2 to 4, wherein the first element, the second element and the third element constitute a first radiating portion, and the fourth element and the fifth element constitute a second radiating portion;

13. The antenna of any one of claims 1-6, further comprising: a cushion body with a preset size is provided,

14. The antenna of claim 13, wherein the pad comprises: a foam layer, a plastic frame or a wood frame.

15. The antenna of claim 13, wherein the means for securing the feed line and the pad to the substrate comprises: and (4) bundling and fixing or pasting and fixing.

16. A wireless signal processing device, comprising:

an antenna as claimed in any one of claims 1 to 15, for transmitting or receiving wireless signals;

and the transmitting path is connected with the antenna through a feeder line and is used for loading information content into the radio frequency carrier signal to form a wireless signal and transmitting the wireless signal through the antenna.

17. An unmanned aerial vehicle, comprising:

a fuselage having a landing gear thereon;

the motor is arranged on the unmanned aerial vehicle body and used for providing flight power for the unmanned aerial vehicle;

an antenna according to any of claims 1 to 15, mounted within the landing gear.