CN223612686U - Antennas and wireless devices - Google Patents

Abstract

The application discloses an antenna and wireless equipment, and belongs to the technical field of antennas. The antenna includes a substrate, a plurality of radiating elements, a transmitting element, and a feeding point. The plurality of radiating elements are used for transmitting or receiving radio frequency signals, the transmission units are respectively and electrically connected with the feeding points and the plurality of radiating elements, the transmission units and the feeding points are integrally formed on the same side of the substrate. Compared with an antenna with a bonding pad, a coaxial line electrically connected with a feed point and a plurality of radiating units, the antenna manufacturing method can greatly simplify the antenna manufacturing process, thereby improving the antenna production efficiency and reducing the antenna production cost.

Description

Antenna and wireless device

Technical Field

The present application relates to the field of communications devices, and in particular, to an antenna and a wireless device.

Background

Today, most routers on the market support dual frequency, i.e. two frequency bands, 2.4GHz and 5 GHz. For the router supporting double frequency, the antenna can be a double-frequency single-feed antenna or a double-frequency double-feed antenna, wherein the double-frequency single-feed antenna has wider application due to the advantages of small design difficulty and the like.

The dual-frequency single-feed antenna comprises a substrate, a plurality of radiating elements, a plurality of bonding pads, a coaxial line and a feed point. The plurality of radiating units, the plurality of bonding pads, the coaxial line and the feeding point are uniformly distributed on the same side of the substrate, and the coaxial line is respectively and electrically connected with the plurality of radiating units and the feeding point through the plurality of bonding pads.

However, with the above-mentioned structure, in the processing procedure of the antenna, it is necessary to weld the plurality of pads with the plurality of radiating elements and the feeding points, respectively, and then connect the coaxial line with the plurality of pads, so that the processing procedure of the dual-frequency single-feed antenna is complex, resulting in higher processing cost.

Disclosure of utility model

The application provides an antenna and wireless equipment, which can simplify the processing procedure of the antenna, thereby reducing the overall cost of the antenna and the wireless equipment, and the corresponding technical proposal is as follows:

In a first aspect, the present application provides an antenna comprising a substrate, a plurality of radiating elements, a transmitting element, and a feed point. The plurality of radiating elements are used for transmitting or receiving radio frequency signals, the transmission units are respectively and electrically connected with the feeding points and the plurality of radiating elements, the transmission units and the feeding points are integrally formed on the same side of the substrate.

The radiating element is a core component in an antenna, and is also called an antenna element, and is used for transmitting or receiving electromagnetic waves, so that wireless signal transmission is realized. Specifically, when an alternating current flows inside the radiating element, a varying electric field and magnetic field are generated around the antenna element according to the electromagnetic induction principle, thereby forming electromagnetic waves. Further, the radiating unit may control the directivity of the transmitted or received electromagnetic waves, and by designing the shape, size and arrangement form of the vibrators, the electromagnetic waves transmitted by the antenna may have omnidirectionality or directionality, and the antenna may be enabled to receive electromagnetic waves in an omnidirectional or directional direction. The antenna comprises a plurality of radiating elements, which may typically be two or three in number.

The transmission unit is a component of the antenna for electrically connecting the radiation unit and the external circuit. At the transmitting end of the wireless device (router), the electric signal sent by the chip enters the transmission unit after passing through the external circuit (comprising the radio frequency circuit and the matching circuit), so that the electric signal enters the radiation unit through the transmission unit, and the electromagnetic wave is emitted outwards. Further, the transmission unit may be a coaxial cable or a microstrip line, and in the present application, the transmission unit is a microstrip line, and the transmission unit and the radiation unit are an integrally formed component. The transmission unit and the radiation unit are usually made of metal materials, have good conductivity and electromagnetic wave radiation capability, and can be made of aluminum materials, copper materials and the like.

The feeding point is a part of the antenna for connecting the transmission unit and the external circuit, through which electric energy can be transmitted from the external circuit to the transmission unit and thus to the radiation unit, so as to realize outward emission of electromagnetic waves. Types of feed points include a center feed point and a coplanar waveguide feed point.

The substrate is the part of the antenna that is used to connect the feed point, the radiating element, the transmitting element and to provide support for these parts. In antennas, the substrate may also be referred to as a substrate, and the substrate material is usually a dielectric material with a high dielectric constant, such as polytetrafluoroethylene, epoxy resin, hydrocarbon resin, PPO polyphenylene oxide, and the like, which have good electrical properties and mechanical stability. Further, the substrate may be formed by using a substrate having a Dk value between 2.8 and 4.8 (e.g. 3.0), and the substrate has a plate-like structure, and the feeding point, the radiation unit, and the transmission unit may be located on the same side of the substrate. The transmission unit, the radiation unit and the feeding point can be integrally formed on the same side of the substrate by adopting a printing process.

Compared with the technical scheme in the related art, the technical scheme of the application has the advantages that the substrate is firstly processed and molded, then the bonding pads are respectively welded with the plurality of radiating units and the feeding points on the circuit layer of the substrate, finally the coaxial line and the plurality of bonding pads are welded, and the plurality of radiating units, the transmission unit and the feeding points are integrally molded on the same side of the substrate through the printing process, so that the processing procedures of the antenna are greatly simplified, the production efficiency of the antenna is improved, and the cost is reduced.

Meanwhile, the plurality of radiating units, the transmission units and the feed points are integrally formed on the same side of the substrate through a printing process, bonding pads and coaxial lines are not required to be welded one by one in the processing process of the antenna, in different antennas, the connection positions of the radiating units and the transmission units cannot be different due to the fact that the bonding pads are partially welded, and therefore the consistency of the positions of all parts in the antenna can be improved, and accordingly the yield of the antenna is improved.

In some possible implementations, the antenna includes a plurality of radiating elements, each of the plurality of radiating elements being a first radiating element, a second radiating element, and a third radiating element, the three radiating elements each being a dipole radiating element and each being spaced apart.

According to the technical scheme, the plurality of radiating units are all arranged as dipole radiating units, so that the antenna has good directivity and a wider radiating angle in the vertical direction, and can radiate bidirectionally, namely the radiating intensities of the antenna at two ends are equal or similar. In the application, the first radiation unit, the second radiation unit and the third radiation unit are arranged at intervals, so that the mutual coupling phenomenon among the radiation units can be reduced, and the radiation efficiency of the radiation units is improved. Meanwhile, electromagnetic waves radiated by the adjacent radiating units can be interfered and enhanced by adjusting the distance between the adjacent radiating units, so that the performance of the antenna is improved.

Specifically, the first radiating element, the second radiating element and the third radiating element are all dipole radiating elements, the first radiating element comprises a first arm and a second arm which are adjacent, the second radiating element comprises a third arm and a fourth arm which are adjacent, and the third radiating element comprises a fifth arm and a sixth arm which are adjacent.

Further, in the present application, the transmission unit includes a first transmission line, a second transmission line, and a third transmission line, where the first transmission line, the second transmission line, and the third transmission line are microstrip lines. The first transmission line is respectively connected with the first arm and the feeding point of the antenna so as to realize the electric connection between the feeding point and the first arm, and the second transmission line is respectively connected with the second arm and the third arm so as to realize the electric connection between the second arm and the third arm. The third transmission line is respectively connected with the fourth arm and the fifth arm so as to realize the electrical connection between the fourth arm and the fifth arm. The sixth arm of the third radiating element may be grounded through the coaxial line, in particular, the sixth arm may be grounded through an outer line of the coaxial line, and an inner line of the coaxial line is used for electrically connecting the outer circuit and the feeding point. It will be appreciated that the first arm is not electrically connected to the second arm, the third arm is not electrically connected to the fourth arm, and the fifth arm is not electrically connected to the sixth arm, and that the first arm is electrically connected to the second arm, the third arm is electrically connected to the fourth arm, and the fifth arm is electrically connected to the sixth arm through electromagnetic induction, that is, by radiating electromagnetic waves in space.

In some possible implementations, the second arm of the first radiating element, the third arm of the second radiating element, and the fourth arm, the fifth arm of the third radiating element each include two arms. Specifically, the second arm includes a first arm and a second arm, the third arm includes a third arm and a fourth arm, the fourth arm includes a fifth arm and a sixth arm, and the fifth arm includes a seventh arm and an eighth arm.

Optionally, the first support arm and the second support arm may be distributed at two sides of the first transmission line at intervals, the third support arm and the fourth support arm may be distributed at two sides of the first transmission line at intervals, the fifth support arm and the sixth support arm may be distributed at two sides of the first transmission line at intervals, and the seventh support arm and the eighth support arm may be distributed at two sides of the first transmission line at intervals.

According to the technical scheme, the second arm, the third arm, the fourth arm and the fifth arm comprise two support arms, and the two support arms belonging to the same arm are distributed on two sides of the first transmission line at intervals. This is equivalent to the middle part of second arm, third arm, fourth arm and fifth arm all is provided with the space of dodging that is used for installing first transmission line, compares in the scheme of connecting a plurality of radiating elements through setting up the coaxial line in the correlation technique, sets up this space of dodging and can make first transmission line unnecessary to be built on stilts in the top of a plurality of radiating elements, but makes first transmission line and a plurality of radiating elements lie in the coplanar to, can reduce the overall thickness of antenna, be favorable to the miniaturized design of antenna and wireless device.

Optionally, the first support arm and the second support arm may be symmetrically distributed on two sides of the first transmission line, the third support arm and the fourth support arm may be symmetrically distributed on two sides of the first transmission line, the fifth support arm and the sixth support arm may be symmetrically distributed on two sides of the first transmission line, and the seventh support arm and the eighth support arm may be symmetrically distributed on two sides of the first transmission line. Thus, the antenna has good directivity and the wiring of the antenna is tidier.

In some possible implementations, the second transmission line includes a first sub-transmission line and a second sub-transmission line, the first sub-transmission line is electrically connected with the first arm and the third arm, the second sub-transmission line is electrically connected with the second arm and the fourth arm, the third transmission line includes a third sub-transmission line and a fourth sub-transmission line, the third sub-transmission line is electrically connected with the fifth arm and the seventh arm, and the fourth sub-transmission line is electrically connected with the sixth arm and the eighth arm.

Specifically, the first sub-transmission line and the second sub-transmission line may be distributed at intervals on two sides of the first transmission line, where the first sub-transmission line is located on a side of the first support arm close to the first transmission line, and the second sub-transmission line is located on a side of the second support arm close to the first transmission line, that is, the first sub-transmission line and the second sub-transmission line are closer to the first transmission line than the corresponding support arms. Accordingly, the third sub-transmission line and the fourth sub-transmission line may be closer to the first transmission line than the corresponding arms. Thus, the wiring of the antenna can be made more neat, and at the same time, the antenna can be ensured to have good gain.

In some possible implementations, the distance between the first arm and the second arm is within a first interval, the distance between the second arm and the third arm, the distance between the fourth arm and the fifth arm are within a second interval, and the distance between the third arm and the fourth arm, the distance between the fifth arm and the sixth arm are within a third interval.

Wherein the first interval is [2.2mm,3.8mm ], the second interval is [0.6mm,2.8mm ], and the third interval is [0.2mm,2.0mm ].

Illustratively, the distance between the first arm and the second arm is 3.4mm, the distance between the second arm and the third arm, the distance between the fourth arm and the fifth arm is 2.1mm, and the distance between the third arm and the fourth arm, the distance between the fifth arm and the sixth arm is 1.4mm.

By adopting the technical scheme, the impedance can be improved, the radiation efficiency of the radiation units can be improved, and the electromagnetic waves radiated by the adjacent radiation units can generate superposition enhancement effect in the far field by reasonably setting the distance between the plurality of radiation units and the distance between the two arms in each radiation unit, so that the performance of the antenna is improved.

In some possible implementations, the plurality of radiating elements in the antenna includes a first radiating element, a second radiating element, and a third radiating element, the first radiating element and the third radiating element being dual-frequency radiating elements, the second radiating element being a single-frequency radiating element.

The two working frequency bands of the first radiation unit and the third radiation unit are the same, and the working frequency band of the second radiation unit is any one of the two working frequency bands.

Specifically, the two working frequency bands of the first radiation unit and the third radiation unit may be 2.4GHz and 5GHz, and the working frequency of the single-frequency radiation unit may be 5GHz. Of course, the two working frequency bands of the first radiation unit and the third radiation unit may be 2.4GHz and 5.2GHz, and may also be 2.4GHz and 5.8GHz.

Alternatively, the first and third radiating elements may be distributed on both sides of the second radiating element. In this way, the two dual-frequency radiating elements may be symmetrically arranged about the single-frequency radiating element, thereby enabling the antenna to have good directivity and gain.

In some possible implementations, the top surfaces of the plurality of radiating elements, the transmitting element, and the feeding point lie in the same plane.

Wherein the top surface is a wall surface facing away from the substrate.

By adopting the technical scheme, the plurality of radiating units, the transmission unit and the feeding point are integrally formed on the same side of the substrate, and the plurality of radiating units, the transmission unit and the feeding point are positioned in the same plane away from the wall surface of the substrate, so that the whole antenna is smoother, the antenna is more suitable for being arranged in a narrow space, and the arrangement flexibility of the antenna can be improved.

In a second aspect, the present application provides a wireless device, which may be a router, comprising an antenna of the first aspect and possible implementations thereof.

The advantages of the wireless device according to the second aspect of the present application are as described in the advantages of the antenna according to the first aspect of the present application, and are not described in detail herein.

According to the technical scheme, the plurality of radiating units, the transmission units and the feed points in the antenna are integrally formed on the same side of the substrate through the printing process, so that the processing procedure of the antenna is greatly simplified, the production efficiency of the antenna is improved, and the cost is reduced.

Meanwhile, the plurality of radiating units, the transmission units and the feed points are integrally formed on the same side of the substrate through a printing process, bonding pads and coaxial lines are not required to be welded one by one in the processing process of the antenna, in different antennas, the connection positions of the radiating units and the transmission units cannot be different due to the fact that the bonding pads are partially welded, and therefore the consistency of the positions of all parts in the antenna can be improved, and accordingly the yield of the antenna is improved.

Drawings

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

fig. 2 is a schematic structural diagram of an antenna according to an embodiment of the present application;

Fig. 3 is a schematic structural diagram of an antenna according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a first arm according to an embodiment of the present application;

Fig. 5 is a dipole azimuth plane view of an antenna in the 2.4GHz band according to an embodiment of the present application;

FIG. 6 is a plan view of dipole elevation of an antenna in the 2.4GHz band according to an embodiment of the present application;

Fig. 7 is a dipole azimuth plane view of an antenna in a 5GHz band according to an embodiment of the present application;

FIG. 8 is a plan view of dipole elevation angles of an antenna in the 5GHz band according to an embodiment of the present application;

Fig. 9 is a schematic structural diagram of an antenna in the related art.

Description of the drawings

1. A substrate;

2. a radiation unit;

21. A first radiating element; 22, a second radiation unit, 23, a third radiation unit;

211. First arm 212, second arm 221, third arm 222, fourth arm 231, fifth arm 232, sixth arm;

2121. first support arm 2122, second support arm 2211, third support arm 2212, fourth support arm;

2221. Fifth support arm, 2222, sixth support arm, 2311, seventh support arm, 2312, eighth support arm;

2111. a ninth support arm, 2112, a tenth support arm, 2113, a first connection portion;

21111. First branch, 21112, second branch, 21121, third branch, 21122, fourth branch;

2321. An eleventh arm 2322, a twelfth arm 2323, a second attachment portion;

3. A transmission unit;

31. a first transmission line, 32, a second transmission line, 33, a third transmission line;

321. first sub-transmission line 322, second sub-transmission line 331, third sub-transmission line 332, fourth sub-transmission line;

4. A feeding point;

5. And (5) a coaxial line.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

While the description of the application will be presented in connection with certain embodiments, it is not intended to limit the features of this application to only this embodiment. Rather, the purpose of the present application is to cover other alternatives or modifications, which may be extended by the claims based on the application. The following description contains many specific details for the purpose of providing a thorough understanding of the present application. The application may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

In embodiments of the present application, the terms "first," "second," "third," "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", "a third" and a fourth "may explicitly or implicitly include one or more such feature.

In the embodiment of the application, "and/or" is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate that a exists alone, and a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted" and "connected" should be interpreted broadly, for example, "connected" may be detachably connected, or may be non-detachably connected, or may be directly connected, or may be indirectly connected through an intermediary. References to directional terms in the embodiments of the present application, such as "upper", "lower", "left", "right", "inner", "outer", etc., are merely with reference to the directions of the drawings, and thus, the directional terms are used in order to better and more clearly describe and understand the embodiments of the present application, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. "plurality" means at least two.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

Nowadays, dual-frequency single-feed antennas are widely used in home routers. Fig. 9 is a schematic structural view of a dual-frequency single-feed antenna shown in the related art, referring to fig. 9, the dual-frequency single-feed antenna includes a substrate, three radiating elements, a plurality of pads, two coaxial lines, and a feeding point, all of which are disposed on the same side of the substrate. The plurality of radiating elements are dipole radiating elements, two arms of each radiating element are welded with two different bonding pads respectively, and inner wires and outer wires of the coaxial lines are welded with the different bonding pads respectively. The antenna has a complex processing procedure, resulting in high processing cost.

The application relates to an antenna, which may be a WiFi (WIRELESS FIDELITY ) antenna of a home router, which may be a dual frequency single feed line, i.e. the antenna comprises two operating frequency bands and a feed point. The two working frequency bands can be a first frequency band and a second frequency band, the first frequency band can be a 5G frequency band, and the second frequency band can be a 2.4G frequency band.

As shown in fig. 1, the antenna includes a substrate 1, a plurality of radiating elements 2, a transmitting element 3 and a feeding point 4, wherein the plurality of radiating elements 2 are used for transmitting or receiving radio frequency signals, the transmitting element 3 is electrically connected with the feeding point 4 and the plurality of radiating elements 2 respectively, and the plurality of radiating elements 2, the transmitting element 3 and the feeding point 4 are integrally formed on the same side of the substrate 1.

Wherein the substrate 1 is used for physically connecting the plurality of radiating elements 2, the transmitting element 3 and the feeding point 4 and for providing support for the plurality of radiating elements 2, the transmitting element 3 and the feeding point 4. The plurality of radiating elements 2 may have different operating frequency bands so that the antenna has the above-mentioned two operating frequency bands, the first frequency band and the second frequency band. The plurality of radiating elements 2, the transmitting element 3 and the feeding point 4 may be integrally formed on the same side of the substrate 1 by a printing process.

By adopting the technical scheme, the plurality of radiating units 2, the transmission unit 3 and the feed point 4 can be integrally formed on the same side of the substrate 1 through a printing process, and compared with the related art, the welding process of welding the bonding pad and the radiating unit together and the welding process of welding the coaxial line and the bonding pad together are omitted, so that the processing process of the antenna is greatly simplified, the production efficiency of the antenna is improved, and the cost is reduced.

In addition, the plurality of radiating units 2, the transmitting unit 3 and the feeding point 4 are integrally formed on the same side of the substrate 1 through a printing process, and as the welding process is omitted, the connection positions of the radiating units 2 and the transmitting unit 3 are not different due to partial welding for different antennas, and the consistency of the positions of all the components in the antennas can be improved, so that the yield of the antennas is improved.

In some possible embodiments, the plurality of radiating elements 2 includes a first radiating element 21, a second radiating element 22, and a third radiating element 23 arranged at intervals, each of the first radiating element 21, the second radiating element 22, and the third radiating element 23 being dipole radiating elements. The first radiating element 21 comprises a first arm 211 and a second arm 212, the second radiating element 22 comprises a third arm 221 and a fourth arm 222, and the third radiating element 23 comprises a fifth arm 231 and a sixth arm 232.

As shown in fig. 1, the substrate 1 is an elongated rectangular thin plate-like structure, the first radiation unit 21, the second radiation unit 22, and the third radiation unit 23 are located on the same side of the substrate 1, and the first radiation unit 21, the second radiation unit 22, and the third radiation unit 23 are distributed at intervals along the length direction of the substrate 1. In the first radiation unit 21, the first arm 211 and the second arm 212 are spaced apart in the longitudinal direction of the substrate 1. In the second radiation unit 22, the third arm 221 and the fourth arm 222 are spaced apart in the longitudinal direction of the substrate 1. In the third radiation unit 23, the fifth arm 231 and the sixth arm 232 are spaced apart in the longitudinal direction of the substrate 1.

Alternatively, the dimensions of the first radiation unit 21, the second radiation unit 22, and the third radiation unit 23 in the width direction of the substrate 1 may be equal and smaller than the width of the substrate 1. In this way, the edges of the first radiation unit 21, the second radiation unit 22 and the third radiation unit 23 can be prevented from extending out of the substrate 1, and the overall strength of the antenna can be improved.

Alternatively, the first radiation unit 21, the second radiation unit 22, and the third radiation unit 23 may be centrally disposed in the width direction of the substrate 1, respectively. In this way, the symmetry of the antenna can be improved.

In some examples, the transmission unit 3 includes a first transmission line 31, a second transmission line 32, and a third transmission line 33.

As shown in fig. 2, the transmission unit 3 includes a first transmission line 31, a second transmission line 32, and a third transmission line 33. The first transmission line 31 is used for electrically connecting the first radiating element 21 and the feeding point 4, the second transmission line 32 is used for electrically connecting the first radiating element 21 and the second radiating element 22, and the third transmission line 33 is used for electrically connecting the second radiating element 22 and the third radiating element 23.

Specifically, both ends of the first transmission line 31 are connected to the first arm 211 and the feeding point 4, respectively, so as to realize electrical connection between the first arm 211 and the feeding point 4. Both ends of the second transmission line 32 are respectively connected to the second arm 212 and the third arm 221, so as to realize electrical connection between the second arm 212 and the third arm 221. Both ends of the third transmission line 33 are respectively connected to the fourth arm 222 and the fifth arm 231, so as to realize electrical connection between the fourth arm 222 and the fifth arm 231. The sixth arm 232 is for grounding.

Further, referring to fig. 2, the antenna further includes a coaxial line 5, one end of an inner line of the coaxial line 5 is electrically connected to the feeding point 4 through a pad, the other end is electrically connected to an external circuit, one end of an outer line of the coaxial line 5 is electrically connected to the sixth arm 232 through a pad, and the other end is grounded.

The external circuit comprises a radio frequency circuit and a matching circuit, wherein the input end of the radio frequency circuit is electrically connected with a chip in the router, the output end of the radio frequency circuit is electrically connected with the input end of the matching circuit, and the output end of the matching circuit is electrically connected with the inner wire of the coaxial line 5.

In practice, the electrical signal emitted by the chip passes through the radio frequency circuit and the matching circuit in sequence, enters the antenna interior through the feeding point 4 via the inner line of the coaxial line 5, and then enters the first arm 211 via the first transmission line 31. In the first arm 211, the alternating current emits electromagnetic waves outwards according to the principle of electromagnetic induction, which are received by the external antenna and also by the second arm 212, i.e. the first arm 211 forms an alternating current inside the second arm 212 by spatial radiation. In the second arm 212, the alternating current enters the third arm 221 through the second transmission line 32. In the third arm 221, the alternating current emits electromagnetic waves outwards according to the principle of electromagnetic induction, which electromagnetic waves are received by the external antenna and also by the fourth arm 222, i.e. the third arm 221 forms an alternating current inside the fourth arm 222 by spatial radiation. Within the fourth arm 222, the alternating current enters the fifth arm 231 through the third transmission line 33. In the fifth arm 231, the alternating current emits electromagnetic waves outwards according to the principle of electromagnetic induction, which are received by the external antenna and also by the sixth arm 232, i.e. the fifth arm 231 forms an alternating current inside the sixth arm 232 by spatial radiation. In the sixth arm 232, the alternating current flows to the ground through the outer line of the coaxial line 5, forming a complete loop.

In some examples, the second arm 212, the third arm 221, the fourth arm 222, and the fifth arm 231 each include two arms. As shown in fig. 2, the second arm 212 includes a first arm 2121 and a second arm 2122, the third arm 221 includes a third arm 2211 and a fourth arm 2212, the fourth arm 222 includes a fifth arm 2221 and a sixth arm 2222, and the fifth arm 231 includes a seventh arm 2311 and an eighth arm 2312.

Optionally, the first arm 2121 and the second arm 2122 are disposed at intervals on two sides of the first transmission line 31, the third arm 2211 and the fourth arm 2212 are disposed at intervals on two sides of the first transmission line 31, the fifth arm 2221 and the sixth arm 2222 are disposed at intervals on two sides of the first transmission line 31, and the seventh arm 2311 and the eighth arm 2312 are disposed at intervals on two sides of the first transmission line 31.

With the solution of the present application, the second arm 212, the third arm 221, the fourth arm 222 and the fifth arm 231 each include two arms, and the two arms belonging to the same arm are spaced apart from each other on both sides of the first transmission line 31. This is equivalent to that the middle portions of the second arm 212, the third arm 221, the fourth arm 222 and the fifth arm 231 are each provided with an avoidance space for mounting the first transmission line 31, which is provided such that the first transmission line 31 does not have to be overhead above the plurality of radiation units 2, but the first transmission line 31 and the plurality of radiation units 2 are located in the same plane, compared with the scheme of connecting the plurality of radiation units by providing coaxial lines in the related art, as shown in fig. 9, thereby reducing the overall thickness of the antenna and facilitating the miniaturization design of the antenna and the wireless device.

Alternatively, the first arm 2121 and the second arm 2122 may be symmetrically disposed on two sides of the first transmission line 31, the third arm 2211 and the fourth arm 2212 may be symmetrically disposed on two sides of the first transmission line 31, the fifth arm 2221 and the sixth arm 2222 may be symmetrically disposed on two sides of the first transmission line 31, and the seventh arm 2311 and the eighth arm 2312 may be symmetrically disposed on two sides of the first transmission line 31.

Thus, the antenna has good directivity and the wiring of the antenna is tidier.

In some examples, the second transmission line 32 and the third transmission line 33 each comprise two sub-transmission lines, each for connection to two arms adjacent and on the same side of the first transmission line 31.

As shown in fig. 2, the second transmission line 32 includes a first sub-transmission line 321 and a second sub-transmission line 322, the first sub-transmission line 321 is electrically connected to the first arm 2121 and the third arm 2211, the second sub-transmission line 322 is electrically connected to the second arm 2122 and the fourth arm 2212, the third transmission line 33 includes a third sub-transmission line 331 and a fourth sub-transmission line 332, the third sub-transmission line 331 is electrically connected to the fifth arm 2221 and the seventh arm 2311, and the fourth sub-transmission line 332 is electrically connected to the sixth arm 2222 and the eighth arm 2312.

In one example, the first arm 211, the first transmission line 31, and the feeding point 4 are integrally formed on the same side of the substrate 1, the first arm 2121, the second arm 2122, the third arm 2211, the fourth arm 2212, the first sub-transmission line 321, and the second sub-transmission line 322 are integrally formed on the same side of the substrate 1, and the fifth arm 2221, the sixth arm 2222, the seventh arm 2311, the eighth arm 2312, the third sub-transmission line 331, and the fourth sub-transmission line 332 are integrally formed on the same side of the substrate 1, and the sixth arm 232 is integrally formed on the same side of the substrate 1.

Further, referring to fig. 2, the first arm 211 includes a ninth support arm 2111, a tenth support arm 2112, and a first connection portion 2113, both ends of the first connection portion 2113 are connected to the ninth support arm 2111 and the tenth support arm 2112, respectively, and a middle portion of the first connection portion 2113 is connected to one end of the first transmission line 31, and the ninth support arm 2111, the tenth support arm 2112, the first connection portion 2113, the first transmission line 31, and the feeding point 4 are integrally formed on the same side of the substrate 1. Therefore, the processing procedure of the antenna can be simplified, the production efficiency is improved, and the processing cost of the antenna is reduced.

Further, referring to fig. 2, the sixth arm 232 includes an eleventh support arm 2321, a twelfth support arm 2322, and a second connection portion 2323, where two ends of the second connection portion 2323 are connected to the eleventh support arm 2321 and the twelfth support arm 2322, respectively, and the second connection portion 2323 has a relief space for accommodating the feeding point 4. Thus, the wiring of the antenna can be more compact, and the miniaturization design of the antenna is facilitated.

In some examples, the distance between the first arm 211 and the second arm 212 is within a first interval, the distance between the second arm 212 and the third arm 221, the distance between the fourth arm 222 and the fifth arm 231 is within a second interval, the distance between the third arm 221 and the fourth arm 222, and the distance between the fifth arm 231 and the sixth arm 232 is within a third interval.

Wherein the first interval is [2.2mm,3.8mm ], the second interval is [0.6mm,2.8mm ], and the third interval is [0.2mm,2.0mm ].

Illustratively, referring to fig. 3, the distance between the first arm 211 and the second arm 212 is 3.4mm, the distance between the second arm 212 and the third arm 221, the distance between the fourth arm 222 and the fifth arm 231 is 2.1mm, and the distance between the third arm 221 and the fourth arm 222, and the distance between the fifth arm 231 and the sixth arm 232 are 1.4mm.

By adopting the technical scheme, the impedance can be improved, the radiation efficiency of the radiation units can be improved, and the electromagnetic waves radiated by the adjacent radiation units can generate superposition enhancement effect in the far field by reasonably setting the distance between the plurality of radiation units and the distance between the two arms in each radiation unit, so that the performance of the antenna is improved.

In some possible embodiments, the first radiating element 21 and the third radiating element 23 are dual frequency radiating elements, and the two operating frequency bands of the first radiating element 21 and the third radiating element 23 are the same. The second radiating element 22 is a single-frequency radiating element, and the operating frequency band of the second radiating element 22 is any one of the two operating frequency bands of the first radiating element 21.

Illustratively, the two operating frequency bands of the first radiating element 21 and the third radiating element 23 may be 2.4GHz and 5GHz, respectively, and the operating frequency of the second radiating element 22 may be 5GHz. The first radiating element 21 is a dipole radiating element, and includes a first arm 211 and a second arm 212, and a specific structure of the first arm 211 will be described below, and a specific structure of the second arm 212 may be referred to as a specific structure of the first arm 211.

Specifically, referring to FIG. 4, first arm 211 includes a ninth arm 2111, a tenth arm 2112, and a first joint 2113, where ninth arm 2111 includes a first branch 21111 and a second branch 21112, and tenth arm 2112 includes a third branch 21121 and a fourth branch 21122. The first branch 21111 and the third branch 21121 are used for transmitting or receiving radio frequency signals in the 2.4GHz band, and the second branch 21112 and the fourth branch 21122 are used for transmitting or receiving radio frequency signals in the 5GHz band. The length of the first branch 21111 is greater than the length of the second branch 21112, and the length of the third branch 21121 is greater than the length of the fourth branch 21122.

Alternatively, the first and third branches 21111 and 21121 may be symmetrical about the neutral plane of the antenna, and the second and fourth branches 21112 and 21122 may be symmetrical about the neutral plane of the antenna. The neutral plane of the antenna is a plane perpendicular to the substrate 1 and equidistant from both ends in the width direction of the substrate 1. In this way, the antenna can be made to have good directivity.

The structure of the third radiating element 23 may refer to the above description of the first radiating element 21, and the description is not repeated here.

Referring to simulation data, for the antenna shown in fig. 1, fig. 5 (Phi in the figure indicates an angle in a horizontal plane) shows a radiation pattern related to azimuth angle of the antenna in a 2.4GHz band, i.e., a dipole azimuth plane pattern in a 2.4GHz band, and fig. 6 shows a radiation pattern related to elevation angle of the antenna in a 2.4GHz band, i.e., a dipole elevation plane pattern in a 2.4GHz band. Referring to fig. 5 and 6, the antenna has good gain in the 2.4GHz band. Accordingly, for the antenna shown in fig. 1, fig. 7 shows a radiation pattern related to azimuth angle of the antenna in the 5GHz band, that is, a dipole azimuth plane view in the 5GHz band, and fig. 8 shows a radiation pattern related to pitch angle of the antenna in the 5GHz band, that is, a dipole elevation plane view in the 5GHz band. Referring to fig. 7 and 8, the antenna has good gain in the 2.4GHz band.

In some possible examples, the top surfaces of the plurality of radiating elements 2, the transmitting element 3 and the feeding point 4 lie in the same plane, the top surface being the wall facing away from the substrate 1.

By adopting the technical scheme disclosed by the application, the plurality of radiating units 2, the transmission unit 3 and the feed point 4 are integrally formed on the same side of the substrate 1, and the wall surfaces of the plurality of radiating units 2, the transmission unit 3 and the feed point 4, which deviate from the substrate 1, are positioned in the same plane, so that the whole antenna is smoother, the antenna is more suitable for being arranged in a narrow space, and the arrangement flexibility of the antenna can be improved.

The embodiment of the application also provides wireless equipment which can be a router, wherein the router comprises the antenna. The router may include a plurality of antennas, for example, two or three, or more of the antennas described above.

The foregoing description of the preferred embodiment of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.

Claims (10)

1. An antenna, characterized in that it comprises a substrate (1), a plurality of radiating elements (2), a transmission element (3) and a feeding point (4);

the plurality of radiating elements (2) are used for transmitting or receiving radio frequency signals;

The transmission unit (3) is respectively and electrically connected with the feed point (4) and the plurality of radiation units (2);

the plurality of radiating units (2), the transmission unit (3) and the feeding point (4) are integrally formed on the same side of the substrate (1).

2. The antenna according to claim 1, characterized in that the plurality of radiating elements (2) comprises first (21), second (22) and third (23) radiating elements distributed at intervals, the first (21), second (22) and third (23) radiating elements being dipole radiating elements.

3. The antenna according to claim 2, characterized in that the transmission unit (3) comprises a first transmission line (31), a second transmission line (32) and a third transmission line (33), the first transmission line (31) being electrically connected to the first arm (211) of the first radiation unit (21), the feed point (4) respectively, the second transmission line (32) being electrically connected to the second arm (212) of the first radiation unit (21), the third arm (221) of the second radiation unit (22) respectively, the third transmission line (33) being electrically connected to the fourth arm (222) of the second radiation unit (22), the fifth arm (231) of the third radiation unit (23) respectively, the sixth arm (232) of the third radiation unit (23) being for grounding.

4. An antenna according to claim 3, wherein the second arm (212) comprises a first arm (2121) and a second arm (2122), the first arm (2121) and the second arm (2122) being spaced apart on either side of the first transmission line (31);

The third arm (221) comprises a third support arm (2211) and a fourth support arm (2212), and the third support arm (2211) and the fourth support arm (2212) are distributed at intervals on two sides of the first transmission line (31);

The fourth arm (222) comprises a fifth support arm (2221) and a sixth support arm (2222), and the fifth support arm (2221) and the sixth support arm (2222) are distributed at intervals on two sides of the first transmission line (31);

the fifth arm (231) comprises a seventh support arm (2311) and an eighth support arm (2312), and the seventh support arm (2311) and the eighth support arm (2312) are distributed on two sides of the first transmission line (31) at intervals.

5. The antenna of claim 4, wherein the second transmission line (32) comprises a first sub-transmission line (321) and a second sub-transmission line (322), the first sub-transmission line (321) is electrically connected to the first arm (2121) and the third arm (2211), respectively, and the second sub-transmission line (322) is electrically connected to the second arm (2122) and the fourth arm (2212), respectively;

The third transmission line (33) includes a third sub-transmission line (331) and a fourth sub-transmission line (332), the third sub-transmission line (331) is electrically connected to the fifth arm (2221) and the seventh arm (2311), and the fourth sub-transmission line (332) is electrically connected to the sixth arm (2222) and the eighth arm (2312).

6. -The antenna according to claim 3, characterized in that the distance between the first arm (211) and the second arm (212) lies within a first interval, which is [2.2mm,3.8mm ];

The distance between the second arm (212) and the third arm (221) and the distance between the fourth arm (222) and the fifth arm (231) are all located in a second interval, wherein the second interval is [0.6mm,2.8mm ];

The distance between the third arm (221) and the fourth arm (222), the distance between the fifth arm (231) and the sixth arm (232) are all located within a third interval, the third interval being [0.2mm,2.0mm ].

7. The antenna according to claim 2, characterized in that the first radiating element (21) and the third radiating element (23) are dual frequency radiating elements, the two operating frequency bands of the first radiating element (21) and the third radiating element (23) being identical;

The second radiating element (22) is a single-frequency radiating element, and the working frequency band of the second radiating element (22) is any one of the two working frequency bands.

8. The antenna according to claim 7, characterized in that the first radiating element (21) and the third radiating element (23) are distributed on both sides of the second radiating element (22).

9. The antenna according to any of the claims 1 to 8, characterized in that the top surfaces of the plurality of radiating elements (2), the transmitting element (3) and the feeding point (4) lie in the same plane, which top surface is a wall facing away from the substrate (1).

10. A wireless device comprising an antenna according to any of claims 1 to 9.