WO2021120663A1

WO2021120663A1 - 5g antenna and radiation unit thereof

Info

Publication number: WO2021120663A1
Application number: PCT/CN2020/110587
Authority: WO
Inventors: 李明超; 林晓阳; 王宇; 陈礼涛
Original assignee: 京信通信技术(广州)有限公司
Priority date: 2019-12-20
Filing date: 2020-08-21
Publication date: 2021-06-24
Also published as: CN111129750A; EP4064453A1; EP4064453A4; CN111129750B

Abstract

Disclosed in the present invention are a 5G antenna and a radiation unit thereof. The radiation unit comprises two groups of polarized orthogonal dipoles, each group of the dipoles comprising two radiation arms arranged opposite to each other at an interval, and the radiation arms each being provided with a first extension branch and a second extension branch arranged at an interval. The radiation unit can expand a working frequency band and has good radiation performance, and therefore the 5G antenna using the radiation unit has good radiation performance.

Description

5G antenna and its radiation unit

Technical field

The present invention relates to the field of communication technology, in particular to a 5G antenna and a radiation unit thereof.

Background technique

With the continuous improvement and advancement of 5G communication technology, 5G networks have gradually entered the commercial stage. As 5G technology has higher requirements for antennas, the antennas are required to have high-speed transmission, larger system capacity, miniaturization, and dual-polarization characteristics at the same time.

The bandwidth of the traditional radiation unit ranges from low frequency to high frequency. Since the low frequency wavelength is longer than the high frequency wavelength, for a fixed size radiation unit, when low frequency and high frequency work at the same time, it is easy to interact with each other, thereby affecting the frequency band of the radiation unit. Expansion affects the radiation performance of the antenna.

Summary of the invention

Based on this, a 5G antenna and its radiating unit are proposed. The radiating unit can realize the expansion of the working frequency band and has good radiation performance; in this way, the 5G antenna adopting the radiating unit has good radiation performance.

The technical scheme is as follows:

In one aspect, a radiating unit is provided, which includes two sets of dipoles with orthogonal polarizations, each set of dipoles includes two radiating arms that are arranged oppositely and spaced apart, and the radiating arms are provided with first spaced apart dipoles. Expansion branch and second expansion branch.

The radiating unit of the above embodiment includes four radiating arms of the same shape and size. Among them, two radiating arms that are spaced apart and arranged diagonally cooperate to form a first group of dipoles, and the other two are spaced apart and diagonally opposite. The arranged radiating arms cooperate to form a second set of dipoles, and two sets of dipoles whose polarizations are orthogonal to each other are used to form dual-polarized radiation. At the same time, the first extended stub and the second extended stub are arranged on the radiating arm, so that the first and second extended stubs can be used to adjust the high-frequency and low-frequency electrical lengths of the radiating unit, thereby realizing the working frequency band. Expansion, the relative bandwidth is more than 20%, the radiation performance is good, and it meets the needs of 5G antennas. In addition, the radiating unit has a simple structure, is easy to process, and reduces production costs.

The technical solution is further explained below:

In one of the embodiments, the surface area of the first expansion branch is adjustable and/or the surface area of the second expansion branch is adjustable.

In one of the embodiments, the surface area of the first expansion branch is greater than or equal to the surface area of the second expansion branch.

In one of the embodiments, the radiating arm is provided with a first connecting portion for coupling and feeding with the feeding balun.

In one of the embodiments, the outer side wall of the radiating arm is provided with a chamfer.

In one of the embodiments, the radiating arm is provided with a first hollow groove, one end of the first expansion stub and one end of the second expansion stub are both connected to the outer side wall of the radiating arm, and the first A first spacer groove communicating with the first hollow groove is provided between the expansion branch section and the second expansion branch section, and the first expansion branch section and the second expansion branch section are both arranged toward the first hollow groove.

In one of the embodiments, a second spacing slot and a current conducting member for connecting two adjacent radiating arms are provided between two adjacent radiating arms, and the two adjacent radiating arms are Each of the radiating arms is provided with a second hollow groove communicating with the second spacing groove.

In one of the embodiments, the hollow area of the first hollow groove is adjustable and/or the hollow area of the second hollow groove is adjustable.

In one of the embodiments, the distance between the side wall of the first hollow groove and the side wall of the second spacing groove is 5.5 mm to 6 mm; the width of the second hollow groove is 11.9 mm to 12.7 mm .

In another aspect, a 5G antenna is provided, including: the radiating unit; and a feeding balun, and the feeding balun is coupled to the radiating arm for feeding.

When using the 5G antenna of the above embodiment, the feeding balun is used to couple and feed the radiating arm, so as to ensure that the radiating unit can reliably and stably radiate signals with good radiation performance. At the same time, the first extended stub and the second extended stub are arranged on the radiating arm of the radiating unit, so that the first extended stub and the second extended stub can be used to adjust the high-frequency and low-frequency electrical length of the radiating unit, thereby enabling work The expansion of the frequency band realizes a wide working bandwidth and meets the needs of the use of 5G antennas. When the 5G antenna of the above embodiment can realize ultra-wideband, it also has good impedance characteristics and cross-polarization ratio, and has a low production cost, which is suitable for the use requirements of 5G technology.

In one of the embodiments, the radiation unit further includes a substrate, the substrate is disposed between the radiating arm and the feeding balun, and the radiating arm is disposed on the surface of the substrate.

In one of the embodiments, the feeding balun includes a first feeding component for coupling and feeding with a first group of the dipoles and a first feeding component for coupling and feeding with a second group of the dipoles. The second power feeding component, the first power feeding component and the second power feeding component are arranged at an included angle.

Description of the drawings

FIG. 1 is a schematic structural diagram of a radiating unit according to an embodiment;

FIG. 2 is a schematic structural diagram of a side surface of a first dielectric member of the radiation unit of FIG. 1; FIG.

3 is a schematic structural view of another side surface of the first dielectric member of the radiation unit of FIG. 1;

4 is a schematic structural view of a side surface of a second dielectric member of the radiation unit of FIG. 1;

FIG. 5 is a schematic structural view of another side surface of a second dielectric member of the radiation unit of FIG. 1; FIG.

Fig. 6 is a standing wave simulation diagram of the radiating unit of Fig. 1;

Fig. 7 is a horizontal radiation pattern of a 5G antenna according to an embodiment.

Description of reference signs:

10. Radiating unit, 110, radiating arm, 120, first expansion stub, 130, second expansion stub, 140, first hollow groove, 150, first spacing groove, 160, second spacing groove, 170, second hollow Slot, 180, current conducting part, 190, cut corner, 1000, feeding slot, 210, first feeding assembly, 211, first dielectric member, 2111, first slot, 2112, third protrusion, 212. The first balun microstrip line, 2121, the first stub, 2122, the second stub, 213, the first microstrip ground plate, 2131, the first bump, 220, the second feeder component, 221, the first Two dielectric parts, 2211, second slot, 2212, fourth bump, 222, second balun microstrip line, 2221, third stub, 2222, fourth stub, 223, second microstrip ground plate, 2231. The second bump, 300. The substrate.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

It should be noted that when an element is referred to as being "disposed on" or "fixed on" another element, it can be directly on the other element or a central element may also be present. When an element is said to be "fixed to" another element, or "fixedly connected" with another element, they can be fixed in a detachable or non-detachable manner. When an element is considered to be "connected" or "rotatably connected" to another element, it can be directly connected to the other element or a centered element may exist at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are for illustrative purposes only and do not mean the only implementation.

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

Similar terms such as "first", "second", "third" and the like in the present invention do not represent specific quantities and sequences, but are merely used to distinguish names.

It should also be understood that, although there is no explicit description when interpreting the elements, the elements are interpreted as including an error range, and the error range should be within an acceptable deviation range of a specific value determined by a person skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which is not limited herein.

As shown in FIG. 1, in one embodiment, a radiating unit 10 is provided, which includes two sets of dipoles with orthogonal polarizations, and each set of dipoles includes two radiating arms 110 arranged at opposite intervals. 110 is provided with first expansion branches 120 and second expansion branches 130 arranged at intervals.

The radiating unit 10 of the above embodiment includes four radiating arms 110 with the same shape and size. Among them, two radiating arms 110 that are spaced apart and arranged diagonally cooperate to form a first group of dipoles, and the other two are spaced apart and arranged diagonally to form a first group of dipoles. The radiating arms 110 arranged diagonally cooperate to form a second set of dipoles, and two sets of dipoles whose polarizations are orthogonal to each other are used to form dual-polarized radiation. At the same time, the first expansion stub 120 and the second expansion stub 130 are arranged at intervals on the radiating arm 110, so that the first expansion stub 120 and the second expansion stub 130 can be used to adjust the electrical length of the high frequency and low frequency of the radiation unit 10, Furthermore, it can realize the expansion of the working frequency band, the relative bandwidth is more than 20%, and the radiation performance is good, which can meet the use requirements of 5G antennas. In addition, the radiating unit 10 has a simple structure, is easy to process, and reduces production costs.

It should be noted that the connection end of the first expansion stub 120 and the connection end of the second expansion stub 130 can be connected to the outer side wall of the radiating arm 110, so that the first expansion stub 120 and the second expansion stub 130 can be flexibly oriented The radiating arm 110 extends outside or inside. The first expansion stub 120 and the second expansion stub 130 can be integrally formed with the radiating arm 110, or can be separately formed and then assembled; preferably, an integrally formed processing method is simple, convenient, and reduces production costs. The first expansion branches 120 and the second expansion branches 130 may be arranged in a sheet-like, strip-like structure, or the like. As shown in FIG. 1, the radiating arm 110a and the radiating arm 110b form a first group of dipoles, and the radiating arm 110c and the radiating arm 110d form a second group of dipoles.

The surface area of the first expansion stub 120 and the surface area of the second expansion stub 130 can be flexibly adjusted simultaneously or separately according to the actual use conditions, and only need to satisfy the requirements that the first expansion stub 120 and the second expansion stub 130 can affect the radiation unit 10 The working frequency band can be expanded.

In one embodiment, the length of the first expansion stub 120 ( _{shown as L1 in FIG. 1} ) is adjustable. In this way, by flexibly adjusting the length of the first expansion stub 120, the surface area of the first expansion stub 120 is adjusted, thereby the electrical length of the radiating unit 10 is adjusted, and the working frequency band of the radiating unit 10 is adjusted.

In one embodiment, the width of the first expansion stub 120 ( _{shown as D1 in FIG. 1} ) is adjustable. In this way, by flexibly adjusting the width of the first expansion stub 120, the surface area of the first expansion stub 120 is adjusted, thereby the electrical length of the radiating unit 10 is adjusted, and the working frequency band of the radiating unit 10 is adjusted.

In one embodiment, the length of the second expansion stub 130 ( _{shown as L 2 of} FIG. 1) is adjustable. In this way, by flexibly adjusting the length of the second expansion stub 130, the surface area of the second expansion stub 130 is adjusted, thereby the electrical length of the radiating unit 10 is adjusted, and the working frequency band of the radiating unit 10 is adjusted.

In one embodiment, the width of the second stub 130 is extended (D 1 shown in FIG. ₂₎ is adjustable. In this way, by flexibly adjusting the width of the second expansion stub 130, the surface area of the second expansion stub 130 is adjusted, thereby the electrical length of the radiating unit 10 is adjusted, and the working frequency band of the radiating unit 10 is adjusted.

It should be noted that at least one parameter of the length of the first expansion stub 120, the width of the first expansion stub 120, the length of the second expansion stub 130, and the width of the second expansion stub 130 can be flexibly adjusted. In this way, the electrical length of the radiating unit 10 can be adjusted, and the working frequency band of the radiating unit 10 can be adjusted.

As shown in FIG. 1, in one embodiment, the surface area of the first expansion stub 120 is greater than the surface area of the second expansion stub 130. In this way, the first extension stub 120 can be used to extend the low frequency bandwidth, and the second extension stub 130 can be used to extend the high frequency bandwidth. When the surface area of the first expansion stub 120 is adjusted by adjusting the length of the first expansion stub 120, and the surface area of the second expansion stub 130 is adjusted by adjusting the length of the second expansion stub 130, in order not to affect the radiation performance of the radiation unit 10 Preferably, the length difference between the first expansion stub 120 and the second expansion stub 130 is within 1 mm.

In one embodiment, the surface area of the first expansion stub 120 is equal to the surface area of the second expansion stub 130. In this way, when the surface area of the first expansion stub 120 and the second expansion stub 130 are adjusted, the electrical length of the radiating unit 10 can be adjusted in a larger range, and the working frequency band of the radiating unit 10 can be adjusted in a larger range.

On the basis of any of the above embodiments, the radiating arm 110 is provided with a first connecting portion for coupling and feeding with a feeding balun. In this way, the first connecting portion can be used to conveniently and reliably realize the connection between the feeding balun and the radiating arm 110, and then the radiating arm 110 can be coupled and fed to ensure the radiation performance of the radiating unit 10. The first connecting portion may be configured as a power feeding jack or a power feeding socket 1000 that is convenient for plug-in fitting.

As shown in FIG. 1, based on any of the above embodiments, the outer side wall of the radiating arm 110 is provided with a cut corner 190. In this way, the cut corner 190 can effectively improve the mutual influence between the operating frequencies and improve the radiation performance of the radiation unit 10. The size of the cut corner 190 can be flexibly adjusted according to actual needs. The cut corner 190 may be provided at a position corresponding to the first expansion stub 120 and the second expansion stub 130.

As shown in FIG. 1, on the basis of any of the above embodiments, the radiating arm 110 is provided with a first hollow groove 140, and one end of the first expansion stub 120 and one end of the second expansion stub 130 are connected to the outer side wall of the radiating arm 110. connection. A first spacing groove 150 communicating with the first hollow groove 140 is provided between the first expansion branch 120 and the second expansion branch 130. In this way, the mass of the radiating arm 110 can be reduced, and the weight of the antenna can be reduced; and the provision of the first hollow groove 140 on the inner surface of the radiating arm 110 can also improve the cross-polarization ratio of the radiating unit 10 and increase the radiating arm. The electrical length of 110 extends the working bandwidth of the radiating unit 10. Both the first expansion branch 120 and the second expansion branch 130 are arranged toward the first hollow groove 140. In this way, the structure of the radiation unit 10 can be made more compact, the projection area of the radiation unit 10 on the base plate can be reduced, and the miniaturization of the antenna can be achieved.

Of course, in other embodiments, the first extension branch 120 may extend toward the inside of the first hollow groove 140, and the second extension branch 130 may extend toward the outside of the radiating arm 110; it may also be the second extension branch 130 toward the first hollow. The groove 140 extends inside, and the first expansion branch 120 extends toward the outside of the radiating arm 110; it is also possible that both the first expansion branch 120 and the second expansion branch 130 extend toward the outside of the first hollow groove 140. It only needs to satisfy that the first extension stub 120 and the second extension stub 130 can extend the working frequency band of the radiating unit 10.

Further, the hollow area of the first hollow groove 140 is adjustable. In this way, the cross-polarization ratio of the radiation unit 10 can be adjusted by adjusting the hollow area of the first hollow groove 140. A first hollow area is the size of the access hole 140, e.g., shown in Figure 1, when the first hollow profile of the groove 140 is a square, the square side length adjustment (L ₃ 1 shown in FIG.,) To Adjust the hollow area.

As shown in FIG. 1, in one embodiment, a second spacing slot 160 and a current conducting member 180 for connecting two adjacent radiating arms 110 are provided between two adjacent radiating arms 110, and are opposite to each other. Both adjacent two radiating arms 110 are provided with a second hollow groove 170 communicating with the second spacing groove 160. In this way, a slow wave structure can be formed by using the current conducting member 180, the second spacing groove 160 and the second hollow groove 170, thereby increasing the electrical length of the radiating arm 110, and further broadening the working frequency band of the radiating unit 10. Wherein, the current conducting member 180 can be arranged as a side wall in the width direction of the second hollow groove 170, which is convenient for processing. The current conducting member 180 may be arranged in a strip shape or a sheet shape.

Further, the hollow area of the second hollow groove 170 is adjustable. In this way, the electrical length of the radiating arm 110 can be adjusted by adjusting the width of the second hollow groove 170, and thus the operating frequency band of the radiating unit 10 can be adjusted. Wherein adjusting the hollow area of the second groove 170 may be hollow by adjusting the width of the second groove 170 is hollow (H 1 in _{FIG. 2)} or length of the implement (H 1 in _{FIG. 3).}

In one embodiment, the hollow area of the first hollow groove 140 is adjustable, and the hollow area of the second hollow groove 170 is correspondingly adjustable. In this way, when the hollow area of the first hollow groove 140 changes, the hollow area of the second hollow groove 170 can be adjusted accordingly, so that the radiation performance of the radiation unit 10 can be ensured.

In one embodiment, when the hollow area of the first hollow groove 140 becomes large, so that the distance between the sidewalls 140 of the groove 160 and the second interval of the first hollow groove (H 1 shown in Figure ₁ When) becomes narrower, the width of the second hollow groove 170 is correspondingly reduced, thereby reducing the hollow area of the second hollow groove 170, thereby improving the radiation performance of the radiation unit 10. Preferably, the distance between the side wall of the first hollow groove 140 and the side wall of the second spacing groove 160 varies from 5.5 mm to 6 mm, and the width of the second hollow groove 170 varies from 11.9 mm to 12.7 mm. The radiation performance of the radiation unit 10.

Of course, the adjustment of the hollow area of the first hollow groove 140, the adjustment of the width of the second hollow groove 170, the adjustment of the surface area of the first expansion branch 120, and the adjustment of the surface area of the second expansion branch 130 can be flexibly adjusted according to actual needs. The selection can be carried out at the same time, individually or in combination, as long as the radiation performance of the radiation unit 10 is guaranteed. It is preferable to adjust the hollow area of the first hollow groove 140, the hollow area of the second hollow groove 170, the surface area of the first expansion branch 120 and the surface area of the second expansion branch 130 at the same time, so that the relative bandwidth can reach 49.2%. , The working frequency range can be 2.3GHz～3.8GHz.

As shown in FIGS. 1 to 5, in one embodiment, a 5G antenna is also provided, including the radiating unit 10 of any of the above embodiments; and a feeding balun, which is coupled to the radiating arm 110 to feed Electricity.

The 5G antenna of the foregoing embodiment uses a feeding balun to couple and feed the radiating arm 110 during use, so as to ensure that the radiating unit 10 can reliably and stably radiate signals with good radiation performance. At the same time, the first expansion stub 120 and the second expansion stub 130 are arranged on the radiating arm 110 of the radiating unit 10, so that the first expansion stub 120 and the second expansion stub 130 can be used to adjust the high frequency and low frequency of the radiation unit 10 The electrical length can then achieve the expansion of the working frequency band, realize a wide working bandwidth, and meet the requirements of the use of 5G antennas. When the 5G antenna of the above embodiment can realize ultra-wideband, it also has good impedance characteristics and cross-polarization ratio, and has a low production cost, which is suitable for the use requirements of 5G technology.

As shown in FIG. 1, in one embodiment, the radiation unit 10 further includes a substrate 300, the substrate 300 is disposed between the radiating arm 110 and the feeding balun, and the radiating arm 110 is disposed on the surface of the substrate 300. In this way, the radiation arm 110 can be arranged on the substrate 300 in the form of a patch, so that the volume of the radiation unit 10 can be reduced. The substrate 300 may be set as a PCB (Printed Circuit Board, printed circuit board) medium board.

As shown in FIGS. 2 to 5, on the basis of the above-mentioned embodiment, the feeding balun includes a first feeding component 210 for coupling and feeding with a first group of dipoles and a first feeding component 210 for connecting with a second group of dipoles. The second power feeding component 220 is sub-coupled and fed, and the first power feeding component 210 and the second power feeding component 220 are arranged at an angle. In this way, the first feeding component 210 is used to feed the two radiating arms 110 of a group of dipoles, and the second feeding component 220 is used to feed the two radiating arms 110 of the other group of dipoles, thereby The energy transmission can be realized, and the radiation unit 10 can radiate signals stably and reliably.

As shown in FIGS. 2 and 3, in one embodiment, the first power feeding assembly 210 includes a first dielectric member 211, a first power feeding member, and two first grounding members. The first power feeding member is arranged on one side of the first dielectric member 211 by means of clamping or bonding, and the two first grounding members are arranged on the other side of the first dielectric member 211 by means of clamping or bonding. In addition, the two first grounding members are relatively spaced apart. The first power feeding member is coupled to the two first grounding members, and the two first grounding members are connected to the two radiating arms 110 of the first group of dipoles in a one-to-one correspondence. In this way, the first power feeding member and the two first grounding members are both coupled and connected, and the two first grounding members are connected to the two radiating arms 110 of the first group of dipoles in a one-to-one correspondence, so that the first power feeding can be utilized. The device couples and feeds the first group of dipoles, so that the radiating unit meets good impedance characteristics.

It should be noted that the first dielectric member 211 may be set as a plate made of insulating material. The first feeder may be configured as a first balun microstrip line 212, as shown in FIG. 2. For example, the first balun microstrip line 212 includes a first stub 2121 and a second stub 2122 that are electrically connected. One end of a branch 2121 is electrically connected to the external feeder network, and one end of the second branch 2122 is suspended. The first branch 2121 and the second branch 2122 are respectively arranged in one-to-one correspondence with the two first grounding members and coupled and connected. As shown in FIG. 3, the first grounding member can be configured as a first microstrip grounding sheet 213, and one end of the first microstrip grounding sheet 213 is electrically connected to the corresponding radiating arm 110 by welding, etc., the first microstrip grounding sheet The other end of the 213 is connected to the grounding base plate by welding or other means. The number of the first grounding members can be flexibly adjusted according to needs, as long as the coupling and feeding to the radiating arm 110 can be realized.

As shown in FIGS. 4 and 5, in one embodiment, the second power feeding assembly 220 includes a second dielectric member 221 arranged at an angle with the first dielectric member 211, a second power feeding member, and two second grounds. Pieces. The second power feeding member is arranged on one side of the second dielectric member 221 by means of clamping or bonding, and the second grounding member is arranged on the other side of the second dielectric member 221 by means of clamping or bonding. The two second grounding members are arranged relatively spaced apart. The second power feeder is coupled to the two second grounding members, and the two second grounding members are connected to the two radiating arms 110 of the second group of dipoles in a one-to-one correspondence. In this way, the second power feeding member is coupled to the two second grounding members, and the two second grounding members are connected to the two radiating arms 110 of the second group of dipoles in a one-to-one correspondence, so that the second power feeding can be used. The device couples and feeds the second group of dipoles, so that the radiating unit meets good impedance characteristics.

It should be noted that the second dielectric member 221 may be configured as a plate made of insulating material. The second feeder may be configured as a second balun microstrip line 222, as shown in FIG. 4. For example, the second balun microstrip line 222 includes a third branch 2221 and a fourth branch 2222 that are electrically connected. One end of the three branch section 2221 is electrically connected to the external feed network, one end of the fourth branch section 2222 is suspended, and the third branch section 2221 and the fourth branch section 2222 are respectively arranged in one-to-one correspondence and coupled with the two second grounding members. As shown in FIG. 5, the second grounding member can be configured as a second microstrip grounding sheet 223, and one end of the second microstrip grounding sheet 223 is electrically connected to the corresponding radiating arm 110 by welding, etc., and the second microstrip grounding sheet The other end of 223 is connected to the grounding base plate by welding or other means. The number of the second grounding members can be flexibly adjusted according to needs, as long as the coupling and feeding to the radiating arm 110 can be realized.

The first medium piece 211 and the second medium piece 221 are arranged at an included angle, which can be realized by inserting and fitting, which is convenient for disassembly and assembly, and has high assembly efficiency. Preferably, the first medium member 211 and the second medium member 221 are vertically arranged, and the layout is compact.

As shown in FIGS. 2 to 5, in one embodiment, the first medium member 211 is provided with a first slot 2111, and the second medium member 221 is provided with a second slot 2211 corresponding to the first slot 2111. In this way, the first medium piece 211 is moved from above the second medium piece 221 so that the second slot 2211 corresponds to the first slot 2111, and then the second medium piece 221 is inserted into the first slot 2111 until the first slot 2111 is inserted. The medium member 211 is inserted into the second slot 2211, so that the first medium member 211 and the second medium member 221 can be connected stably and reliably, thereby forming a supporting structure and providing stable support for the radiation unit 10. The width of the first slot 2111 and the width of the second slot 2211 can be flexibly adjusted according to the thickness of the second medium piece 221 and the first medium piece 211.

As shown in FIGS. 2 and 3, in one embodiment, one end of the first grounding member is provided with a first protrusion 2131 for mating with the radiation arm 110. As shown in FIGS. 4 and 5, one end of the second grounding member is provided with a second protrusion 2231 for mating with the radiation arm 110. In this way, a corresponding feeding slot 1000 may be provided on the radiating arm 110. Inserting the first protrusion 2131 and the second protrusion 2231 into the feeding slot 1000 can simply and conveniently realize the first grounding member and The second grounding member is electrically connected to the radiating arm 110. Of course, in order to improve the stability and reliability of the plug-in fitting, as shown in FIG. 3, the first dielectric member 211 may also be provided with a third protrusion 2112 corresponding to the first protrusion 2131; as shown in FIG. The second dielectric member 221 may also be disposed on the fourth protrusion 2212 corresponding to the second protrusion 2231 to improve the insertion strength of the first protrusion 2131 and the second protrusion 2231. The base plate 300 also needs to be provided with a socket corresponding to the power feeding socket 1000.

In one embodiment, the 5G antenna includes at least three radiating units 10, and the three radiating units 10 are arranged at equal intervals at a preset distance. In this way, three radiating units 10 can be used to form a sub-array, and the distance between two adjacent radiating units 10 is preferably 62.5 mm. Further, four sub-arrays can form a 5G antenna array, and the spacing between adjacent sub-arrays is preferably 52 mm. Therefore, the size of the radiating unit 10 can be adjusted according to the actual frequency requirements to meet the requirements of different operating frequencies, and the radiating unit 10 can be combined to meet the requirements of the 5G array antenna, so that the pattern of the 5G array antenna is better than that of other array antennas. Obvious improvement, as shown in Figure 6, has a good standing wave; as shown in Figure 7, the beam width in the horizontal plane is above 60°.

The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered as the range described in this specification.

The above examples only express several implementations of the present invention, and the descriptions are more specific and detailed, but they should not be understood as a restriction on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

A radiating unit, characterized in that it comprises two groups of dipoles with orthogonal polarizations, each group of said dipoles comprises two radiating arms arranged relatively spaced apart, and the radiating arms are provided with spaced first extensions. The branch and the second extended branch.
The radiation unit according to claim 1, wherein the surface area of the first expansion stub is adjustable and/or the surface area of the second expansion stub is adjustable.
The radiation unit according to claim 2, wherein the surface area of the first expansion branch is greater than or equal to the surface area of the second expansion branch.
The radiating unit according to claim 1, wherein the radiating arm is provided with a first connecting portion for coupling and feeding with a feeding balun.
The radiating unit according to claim 1, wherein the outer side wall of the radiating arm is provided with a chamfer.
The radiating unit according to any one of claims 1 to 5, wherein the radiating arm is provided with a first hollow groove, and one end of the first expansion stub and one end of the second expansion stub are both connected to the The outer side wall of the radiating arm is connected, a first spacing groove communicating with the first hollow groove is provided between the first expansion stub and the second expansion stub, and the first expansion stub and the second expansion The branches are all arranged toward the first hollow groove.
7. The radiating unit according to claim 6, wherein a second spacing slot and a current conducting member for connecting two adjacent radiating arms are provided between two adjacent radiating arms, And two adjacent radiating arms are provided with second hollow grooves communicating with the second spacing grooves.
8. The radiation unit according to claim 7, wherein the hollow area of the first hollow groove is adjustable and/or the hollow area of the second hollow groove is adjustable.
The radiation unit according to claim 7, wherein the distance between the side wall of the first hollow groove and the side wall of the second spacing groove is 5.5 mm to 6 mm; The width is 11.9mm～12.7mm.
A 5G antenna, characterized in that it includes:

The radiation unit according to any one of claims 1 to 9; and

A feeding balun is coupled to the radiating arm for feeding.
The 5G antenna according to claim 10, wherein the radiating unit further comprises a substrate, the substrate is disposed between the radiating arm and the feeding balun, and the radiating arm is disposed on the surface of the substrate .
The 5G antenna according to claim 10 or 11, wherein the feeding balun comprises a first feeding component for coupling and feeding with the first group of the dipoles, and a first feeding component for connecting with the second group of dipoles. The dipole is coupled to the second power feeding component, and the first power feeding component and the second power feeding component are arranged at an angle.