CN111129750B

CN111129750B - 5G antenna and radiating element thereof

Info

Publication number: CN111129750B
Application number: CN201911323563.3A
Authority: CN
Inventors: 李明超; 林晓阳; 王宇; 陈礼涛
Original assignee: Comba Telecom Technology Guangzhou Ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2022-07-12
Anticipated expiration: 2039-12-20
Also published as: EP4064453A4; EP4064453A1; WO2021120663A1; CN111129750A

Abstract

The invention discloses a 5G antenna and a radiation unit thereof, wherein the radiation unit comprises two groups of dipoles with orthogonal polarization, each group of dipoles comprises two radiation arms arranged at intervals oppositely, and the radiation arms are provided with a first extension branch and a second extension branch arranged at intervals. The radiation unit can realize the expansion of the working frequency band and has good radiation performance; therefore, the 5G antenna adopting the radiation unit has good radiation performance.

Description

5G antenna and radiating element thereof

Technical Field

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

Background

With the continuous improvement and advance of 5G communication technology, 5G networks are also gradually entering into the commercial stage. Due to the higher requirements of the 5G technology on the antenna, the antenna is required to have high-rate transmission, larger system capacity, miniaturization and dual-polarization characteristics at the same time.

The bandwidth of a traditional radiating element is from low frequency to high frequency, and as the low frequency wavelength is longer than the high frequency wavelength, for the radiating element with a fixed size, when the low frequency and the high frequency work simultaneously, mutual influence is easily generated, so that the frequency band expansion of the radiating element is influenced, and the radiation performance of an antenna is influenced.

Disclosure of Invention

Based on the technical scheme, the 5G antenna and the radiating unit thereof are provided, the radiating unit can realize the expansion of a working frequency band, and the radiation performance is good; therefore, the 5G antenna adopting the radiation unit has good radiation performance.

The technical scheme is as follows:

on one hand, the radiation unit comprises two groups of polarized orthogonal dipoles, each group of dipoles comprises two radiation arms arranged at intervals oppositely, and the radiation arms are provided with first extension branches and second extension branches arranged at intervals.

The radiating element of the above embodiment includes four radiating arms with the same shape and size, wherein two radiating arms that are oppositely spaced and diagonally arranged are matched to form a first group of dipoles, the other two radiating arms that are oppositely spaced and diagonally arranged are matched to form a second group of dipoles, and dual-polarization radiation is formed by two groups of dipoles with mutually orthogonal polarizations. Simultaneously, set up the first extension minor matters and the second extension minor matters that the interval set up on the radiation arm to can utilize first extension minor matters and second extension minor matters to adjust the high frequency of radiating element and the electric length of low frequency, and then can realize the extension of working frequency channel, relative bandwidth is more than 20%, and radiation performance is good, satisfies 5G antenna's user demand. And, the simple structure of radiation unit, easily processing has reduced manufacturing cost.

The technical solution is further explained as follows:

in one embodiment, the surface area of the first extension branch is adjustable and/or the surface area of the second extension branch is adjustable.

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

In one embodiment, the radiating arm is provided with a first connection for coupling a feed with a feed balun.

In one embodiment, the outer side wall of the radiation arm is provided with a chamfer.

In one embodiment, the radiation arm is provided with a first hollow groove, one end of the first extension branch and one end of the second extension branch are both connected with the outer side wall of the radiation arm, a first spacing groove communicated with the first hollow groove is arranged between the first extension branch and the second extension branch, and the first extension branch and the second extension branch are both arranged towards the first hollow groove.

In one embodiment, a second spacing groove and a current conducting piece for connecting the two adjacent radiation arms are arranged between the two adjacent radiation arms, and a second hollow groove communicated with the second spacing groove is arranged on each of the two adjacent radiation arms.

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

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

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

When the 5G antenna is used, the feed balun is used for coupling feed of the radiation arm, so that the radiation unit can be ensured to radiate signals reliably and stably, and the radiation performance is good. Simultaneously, set up the first extension minor matters and the second extension minor matters that the interval set up on radiating element's the radiation arm to can utilize first extension minor matters and second extension minor matters to adjust radiating element's high frequency and the electric length of low frequency, and then can realize the extension of working frequency channel, realize very wide working bandwidth, satisfy the user demand of 5G antenna. The 5G antenna of the embodiment has good impedance characteristics and cross polarization ratio under the condition of realizing ultra wide band, has low production cost, and meets the use requirements of the 5G technology.

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

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

Drawings

Fig. 1 is a schematic structural diagram of a radiation unit according to an embodiment;

fig. 2 is a schematic view of a side of a first dielectric member of the radiating element of fig. 1;

FIG. 3 is a schematic view of another side of the first dielectric member of the radiating element of FIG. 1;

FIG. 4 is a schematic diagram of a side of a second dielectric member of the radiating element of FIG. 1;

FIG. 5 is a schematic view of another side of the second dielectric member of the radiating element of FIG. 1;

FIG. 6 is a graph of a standing wave simulation of the radiating element of FIG. 1;

fig. 7 is a horizontal radiation pattern of a 5G antenna of one embodiment.

Description of reference numerals:

10. the radiating element comprises a radiating element body, 110, a radiating arm body, 120, a first extension branch, 130, a second extension branch, 140, a first hollowed-out groove, 150, a first spacing groove, 160, a second spacing groove, 170, a second hollowed-out groove, 180, a current conducting piece, 190, a cut angle, 1000, a feed slot, 210, a first feed assembly, 211, a first dielectric piece, 2111, a first slot, 2112, a third protrusion, 212, a first balun microstrip line, 2121, a first branch, 2122, a second branch, 213, a first microstrip grounding piece, 2131, a first protrusion, 220, a second feed assembly, 221, a second dielectric piece, 2211, a second slot, 2212, a fourth protrusion, 222, a second balun microstrip line, 2221, a third branch, 2222, a fourth branch, 223, a second microstrip grounding piece, 2231, a second protrusion, 300 and a substrate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "disposed on," "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 "secured" to, or "fixedly coupled" to another element, it can be removably secured or non-removably secured to the other element. When an element is referred to as being "connected," "rotationally connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

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.

The terms "first," "second," "third," and the like, as used herein, do not denote any particular order or quantity, but rather are used to distinguish one element from another.

It will also be understood that when interpreting elements, although not explicitly described, the elements are to be interpreted as including a range of errors which are within the acceptable range of deviation of the particular values as determined by those skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, without limitation.

As shown in fig. 1, in one embodiment, a radiation unit 10 is provided, which includes two sets of orthogonally polarized dipoles, each set of dipoles includes two radiation arms 110 oppositely spaced apart, and the radiation arms 110 are provided with a first extension branch 120 and a second extension branch 130 spaced apart from each other.

The radiation unit 10 of the above embodiment includes four radiation arms 110 with the same shape and size, wherein two radiation arms 110 that are oppositely spaced and diagonally arranged cooperate to form a first group of dipoles, and the other two radiation arms 110 that are oppositely spaced and diagonally arranged cooperate to form a second group of dipoles, and two groups of dipoles with mutually orthogonal polarizations are used to form dual-polarized radiation. Meanwhile, the first extension branch 120 and the second extension branch 130 are arranged on the radiation arm 110 at intervals, so that the high-frequency and low-frequency electrical lengths of the radiation unit 10 can be adjusted by using the first extension branch 120 and the second extension branch 130, the expansion of a working frequency band can be realized, the relative bandwidth is more than 20%, the radiation performance is good, and the use requirement of a 5G antenna is met. Moreover, the radiation unit 10 has a simple structure, is easy to process, and reduces the production cost.

It should be noted that the connection end of the first extension branch 120 and the connection end of the second extension branch 130 may be connected to the outer sidewall of the radiation arm 110, so that the first extension branch 120 and the second extension branch 130 can flexibly extend toward the outer side or the inner side of the radiation arm 110. The first extension branch 120 and the second extension branch 130 may be integrally formed with the radiation arm 110, or may be formed by assembling after being separately formed; the processing mode of the preferred integrated into one piece, simple, convenient, reduction in production cost. The first extension branch 120 and the second extension branch 130 may be arranged in a sheet, strip, or the like structure. As shown in fig. 1, radiating arm 110a and radiating arm 110b form a first set of dipoles and radiating arm 110c and radiating arm 110d form a second set of dipoles.

The surface area of the first extension branch 120 and the surface area of the second extension branch 130 can be flexibly adjusted simultaneously or individually according to actual use conditions, and only the requirement that the first extension branch 120 and the second extension branch 130 can extend the working frequency band of the radiation unit 10 is met.

In one embodiment, the length of the first extension branch 120 (e.g., L of FIG. 1)₁Shown) is adjustable. In this way, the length of the first extension branch 120 is flexibly adjusted, so as to adjust the surface area of the first extension branch 120, thereby adjusting the electrical length of the radiation unit 10, and further adjusting the working frequency band of the radiation unit 10.

In one embodiment, the width of the first extension branch 120 (e.g., D of FIG. 1)₁Shown) is adjustable. In this way, the width of the first extension branch 120 is flexibly adjusted, so as to adjust the surface area of the first extension branch 120, thereby adjusting the electrical length of the radiating unit 10, and further adjusting the working frequency band of the radiating unit 10.

In one embodiment, the length of the second extension branch 130 (e.g., L of FIG. 1)₂Shown) is adjustable. In this way, the length of the second extension branch 130 is flexibly adjusted, so as to adjust the surface area of the second extension branch 130, thereby adjusting the electrical length of the radiation unit 10, and further adjusting the working frequency band of the radiation unit 10.

In one embodiment, the width of the second extension branch 130 (e.g., D of FIG. 1)₂Shown) is adjustable. In this way, the width of the second extension branch 130 is flexibly adjusted, so as to adjust the surface area of the second extension branch 130, thereby adjusting the electrical length of the radiation unit 10, and further adjusting the working frequency band of the radiation unit 10.

It should be noted that at least one of the length of the first extension branch 120, the width of the first extension branch 120, the length of the second extension branch 130, and the width of the second extension branch 130 can be flexibly adjusted, so that the electrical length of the radiation unit 10 can be adjusted, and the operating frequency band of the radiation unit 10 can be adjusted.

As shown in fig. 1, in one embodiment, the surface area of the first extended branch 120 is greater than the surface area of the second extended branch 130. In this way, the bandwidth of low frequencies can be extended by the first extension branch 120, and the bandwidth of high frequencies can be extended by the second extension branch 130. When the surface area of the first extension branch 120 is adjusted by adjusting the length of the first extension branch 120 and the surface area of the second extension branch 130 is adjusted by adjusting the length of the second extension branch 130, in order not to affect the radiation performance of the radiation unit 10, it is preferable that the difference in length between the first extension branch 120 and the second extension branch 130 is within 1 mm.

In one embodiment, the surface area of the first extended branch 120 is equal to the surface area of the second extended branch 130. In this way, when the surface area of the first extension branch 120 and the surface area of the second extension branch 130 are adjusted, the electrical length of the radiating unit 10 can be adjusted in a wider range, and thus the operating frequency band of the radiating unit 10 can be adjusted in a wider range.

On the basis of any of the above embodiments, the radiation arm 110 is provided with a first connection portion for coupling feeding with the feeding balun. Therefore, the first connection part can conveniently and reliably realize the connection between the feed balun and the radiation arm 110, and further can perform coupling feed on the radiation arm 110, thereby ensuring the radiation performance of the radiation unit 10. The first connection portion may be provided as a feed jack or feed slot 1000 to facilitate a plug-fit.

As shown in fig. 1, on the basis of any of the above embodiments, the outer sidewall of the radiation arm 110 is provided with a chamfer 190. Therefore, the cut angle 190 can effectively improve the mutual influence between the working frequencies, and improve the radiation performance of the radiation unit 10. The size of the chamfer 190 can be flexibly adjusted according to the actual use requirement. The chamfer 190 may be provided at a position corresponding to the first and

second extension branches

120 and 130.

As shown in fig. 1, on the basis of any of the above embodiments, the radiation arm 110 is provided with a first hollow groove 140, and one end of the first extension branch 120 and one end of the second extension branch 130 are both connected to the outer sidewall of the radiation arm 110. A first spacing groove 150 communicated with the first hollow groove 140 is arranged between the first extension branch 120 and the second extension branch 130. Thus, the weight of the radiation arm 110 can be reduced, and the antenna can be lightened; moreover, the first hollow-out groove 140 is disposed on the inner surface of the radiation arm 110, which can improve the cross polarization ratio of the radiation unit 10, increase the electrical length of the radiation arm 110, and expand the operating bandwidth of the radiation unit 10. The first extension branch 120 and the second extension branch 130 are both disposed toward the first hollow 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 bottom plate is reduced, and the antenna can be miniaturized.

Of course, in other embodiments, it is possible that the first extension branch 120 extends toward the inside of the first hollow-out groove 140, and the second extension branch 130 extends toward the outside of the radiation arm 110; the second extension branch 130 may extend toward the inside of the first hollow 140, and the first extension branch 120 extends toward the outer side of the radiation arm 110; it is also possible that the first extension branch 120 and the second extension branch 130 both extend toward the outside of the first hollow groove 140. It is only necessary to make the first extension branch 120 and the second extension branch 130 extend the working frequency band of the radiation unit 10.

Further, of the first hollow groove 140The hollow area 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. The hollow area refers to the size of the first hollow groove 140, for example, as shown in fig. 1, when the outline of the first hollow groove 140 is square, the side length of the square is adjusted (e.g., L in fig. 1)₃Shown,) the hollowed-out area can be adjusted.

As shown in fig. 1, in an embodiment, a second spacing groove 160 and a current conducting element 180 for connecting two adjacent radiating arms 110 are disposed between two adjacent radiating arms 110, and a second hollow groove 170 communicating with the second spacing groove 160 is disposed on each of two adjacent radiating arms 110. In this way, a slow wave structure can be formed by the current-conducting member 180, the second spacer slots 160 and the second hollow-out slots 170, so that the electrical length of the radiating arm 110 is increased, and the operating frequency band of the radiating unit 10 is widened. The current conduction member 180 may be disposed as a sidewall of the second hollow-out groove 170 in the width direction, so as to facilitate processing. The current lead-through 180 may be provided in a bar 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 radiation arm 110 can be adjusted by adjusting the width of the second hollow-out groove 170, so as to adjust the working frequency band of the radiation unit 10. Wherein, the hollow area of the second hollow groove 170 can be adjusted by adjusting the width of the second hollow groove 170 (see H in fig. 1)₂Shown) or length (as H in FIG. 1)₃Shown) is implemented.

In one embodiment, the area of the first hollow-out groove 140 is adjustable, and the area of the second hollow-out groove 170 is correspondingly adjustable. Thus, 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 as to ensure the radiation performance of the radiation unit 10.

In one embodiment, when the hollow area of the first hollow-out groove 140 is increased, the distance between the sidewall of the first hollow-out groove 140 and the sidewall of the second spacer groove 160 is increased (see H in fig. 1)₁Shown), the width of the second hollow-out groove 170 is correspondingly made smaller, thereby reducing the hollow-out area of the second hollow-out groove 170, and improving the radiation unit10, radiation performance. Preferably, the variation range of the distance between the sidewall of the first hollow-out groove 140 and the sidewall of the second spacing groove 160 is 5.5mm to 6mm, and the variation range of the width of the second hollow-out groove 170 is 11.9mm to 12.7mm, so as to ensure 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 extension branch 120 and the adjustment of the surface area of the second extension branch 130 may be flexibly selected according to actual use requirements, and may be performed simultaneously, separately or in combination, only by ensuring the radiation performance of the radiation unit 10. Preferably, the hollow area of the first hollow groove 140, the hollow area of the second hollow groove 170, the surface area of the first extension branch 120 and the surface area of the second extension branch 130 are adjusted correspondingly, so that the relative bandwidth can reach 49.2%, and the working frequency range can be 2.3 GHz-3.8 GHz.

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

When the 5G antenna of the above embodiment is used, the feeding balun is used to perform coupling feeding on the radiation arm 110, so that the radiation unit 10 can be ensured to reliably and stably radiate a signal, and the radiation performance is good. Meanwhile, the first extension branch 120 and the second extension branch 130 which are arranged at intervals are arranged on the radiation arm 110 of the radiation unit 10, so that the high-frequency and low-frequency electrical lengths of the radiation unit 10 can be adjusted by using the first extension branch 120 and the second extension branch 130, the expansion of a working frequency band can be realized, a very wide working bandwidth can be realized, and the use requirements of a 5G antenna can be met. The 5G antenna of the embodiment has good impedance characteristics and cross polarization ratio under the condition of realizing ultra wide band, has low production cost, and meets the use requirements of the 5G technology.

As shown in fig. 1, in an embodiment, the radiating element 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 a surface of the substrate 300. As such, the radiation arm 110 may be disposed 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 provided as a PCB (Printed Circuit Board) dielectric Board.

As shown in fig. 2 to 5, on the basis of the above-mentioned embodiments, the feeding balun includes a first feeding component 210 for coupling and feeding with the first group of dipoles and a second feeding component 220 for coupling and feeding with the second group of dipoles, and the first feeding component 210 and the second feeding component 220 are disposed at an included angle. In this way, the first feeding component 210 is used to feed the two radiation arms 110 of one group of dipoles, and the second feeding component 220 is used to feed the two radiation arms 110 of the other group of dipoles, so that energy transmission can be realized, and the radiation unit 10 can be ensured to radiate signals stably and reliably.

As shown in fig. 2 and 3, in one embodiment, the first feeding component 210 includes a first dielectric member 211, a first feeding member and two first grounding members. The first feeding part is arranged on one side of the first medium part 211 in a clamping or bonding mode, the two first grounding parts are arranged on the other side of the first medium part 211 in a clamping or bonding mode, and the two first grounding parts are arranged at intervals relatively. The first feeding element is coupled to two first grounding elements, and the two first grounding elements are connected to the two radiating arms 110 of the first group of dipoles in a one-to-one correspondence. So, first feed spare and two equal coupling connection of ground connection spare, and two first ground connection spares are connected with two radiation arms 110 one-to-one of first group dipole to can utilize first feed spare to carry out the coupling feed to first group dipole, and then make radiating element satisfy good impedance characteristic.

It should be noted that the first dielectric member 211 may be a plate made of an insulating material. The first feeding element 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 branch 2121 and a second branch 2122 electrically connected to each other, one end of the first branch 2121 is electrically connected to the external feeding network, one end of the second branch 2122 is suspended, and the first branch 2121 and the second branch 2122 are respectively disposed in one-to-one correspondence with the two first grounding elements and coupled to each other. As shown in fig. 3, the first grounding piece may be configured as a first microstrip grounding piece 213, one end of the first microstrip grounding piece 213 is electrically connected to the corresponding radiation arm 110 by welding, and the other end of the first microstrip grounding piece 213 is connected to the grounding substrate by welding. The number of the first grounding pieces can be flexibly adjusted as required, and only the requirement that the radiation arm 110 can be coupled and fed is met.

As shown in fig. 4 and 5, in one embodiment, the second feeding component 220 includes a second dielectric member 221 disposed at an angle to the first dielectric member 211, a second feeding member, and two second grounding members. The second feeding part is arranged on one side of the second dielectric part 221 in a clamping or bonding manner, the second grounding part is arranged on the other side of the second dielectric part 221 in a clamping or bonding manner, and the two second grounding parts are arranged at intervals relatively. The second feeding element is coupled to two second grounding elements, and the two second grounding elements are correspondingly connected to the two radiating arms 110 of the second group of dipoles. So, second feed and two second ground connection spare all coupling connection, and two second ground connection spare are connected with two radiation arm 110 one-to-one of second group's dipole to can utilize the second feed to carry out the coupling feed to second group's dipole, and then make radiating element satisfy good impedance characteristic.

The second dielectric member 221 may be a plate made of an insulating material. The second feeding element 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 third branch 2221 is electrically connected to the external feeding network, one end of the fourth branch 2222 is suspended, and the third branch 2221 and the fourth branch 2222 are respectively disposed in one-to-one correspondence with the two second grounding elements and are coupled to each other. As shown in fig. 5, the second grounding piece may be configured as a second microstrip grounding piece 223, one end of the second microstrip grounding piece 223 is electrically connected to the corresponding radiation arm 110 by welding, and the other end of the second microstrip grounding piece 223 is connected to the grounding substrate by welding. The number of the second grounding pieces can be flexibly adjusted as required, and only the requirement that the radiation arm 110 can be coupled and fed is met.

First medium piece 211 and second medium piece 221 be the contained angle setting, can realize through the grafting complex mode, easy dismounting, assembly efficiency is high. Preferably, the first dielectric member 211 is disposed perpendicular to the second dielectric member 221, and the layout is compact.

As shown in fig. 2-5, in one embodiment, the first piece of media 211 is provided with a first slot 2111 and the second piece of media 221 is provided with a second slot 2211 disposed corresponding to the first slot 2111. In this way, the first medium piece 211 is inserted into the first slot 2111 from above the second medium piece 221, so that the second slot 2211 corresponds to the first slot 2111, and the second medium piece 221 is inserted into the first slot 2111 until the first medium piece 211 is inserted into the second slot 2211, and then the first medium piece 211 and the second medium piece 221 can be stably and reliably connected into a whole, so that a supporting structure can be formed, and the radiation unit 10 is stably supported. 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 piece of media 221 and the first piece of media 211.

As shown in fig. 2 and 3, in one embodiment, one end of the first grounding member is provided with a first protrusion 2131 for plugging and matching with the radiation arm 110. As shown in fig. 4 and 5, one end of the second ground element is provided with a second protrusion 2231 for mating with the radiation arm 110. Thus, the radiation arm 110 may be provided with a corresponding feed slot 1000, and the first protrusion 2131 and the second protrusion 2231 are inserted into the feed slot 1000, so that the first ground element and the second ground element can be electrically connected to the radiation arm 110 simply and conveniently. Of course, in order to improve the stability and reliability of the plug-in fitting, as shown in fig. 3, the first medium member 211 may be provided with a third protrusion 2112 corresponding to the first protrusion 2131; as shown in fig. 5, the second medium member 221 may also be disposed on a fourth protrusion 2212 correspondingly disposed on the second protrusion 2231, so as to improve the inserting strength of the first protrusion 2131 and the second protrusion 2231. The substrate 300 may also be provided with a jack corresponding to the power feeding slot 1000.

In one embodiment, the 5G antenna includes at least three radiation elements 10, and the three radiation elements 10 are equally spaced apart by a predetermined distance. Thus, three radiation elements 10 can be used to form a sub-array, and the distance between two adjacent radiation elements 10 is preferably 62.5 mm. Further, four sub-arrays can form a 5G antenna array, and the distance between adjacent sub-arrays is preferably 52 mm. Therefore, the size of the radiation unit 10 can be adjusted according to the actual frequency requirement to meet the requirements of different working frequencies, and the radiation unit 10 is used in combination to meet the requirements of the 5G array antenna, so that the directional diagram of the 5G array antenna is obviously improved compared with other array antennas, and has good standing waves as shown in fig. 6; as shown in fig. 7, the horizontal plane beam widths all reach 60 ° or more.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A radiation unit is characterized by comprising two groups of polarized orthogonal dipoles, wherein each group of dipoles comprises two radiation arms which are oppositely arranged at intervals, and the radiation arms are provided with a first extension branch and a second extension branch which are arranged at intervals;

the radiation arm is provided with a first hollow groove, one end of the first extension branch and one end of the second extension branch are connected with the outer side wall of the radiation arm, a first spacing groove communicated with the first hollow groove is formed between the first extension branch and the second extension branch, and the first extension branch and the second extension branch all face the inside of the first hollow groove.

2. The radiating element of claim 1, wherein a surface area of the first extension branch is adjustable and/or a surface area of the second extension branch is adjustable.

3. The radiating element of claim 2, wherein a surface area of the first extended branch is greater than or equal to a surface area of the second extended branch.

4. The radiating element of claim 1, wherein the radiating arm is provided with a first connection for coupling the feed to a feed balun.

5. The radiating element of claim 1, wherein an outer sidewall of the radiating arm is chamfered.

6. The radiating element according to any one of claims 1 to 5, wherein a second spacing slot and a current conducting member for connecting two adjacent radiating arms are disposed between two adjacent radiating arms, and each of two adjacent radiating arms is provided with a second hollow slot communicating with the second spacing slot.

7. The radiating element of claim 6, wherein the area of the first hollowed-out groove is adjustable and/or the area of the second hollowed-out groove is adjustable.

8. The radiating element of claim 6, wherein the distance between the side wall of the first hollow-out groove and the side wall of the second spacer groove is 5.5mm to 6 mm; the width of the second hollow-out groove is 11.9 mm-12.7 mm.

9. A5G antenna, comprising:

the radiation unit of any one of claims 1 to 8; and

a feed balun coupled to the radiating arm for feeding.

10. The 5G antenna of claim 9, wherein the radiating element further comprises a substrate disposed between the radiating arm and the feed balun, the radiating arm disposed on a surface of the substrate.

11. The 5G antenna according to claim 9 or 10, wherein the feed balun comprises a first feed component for coupling with a first group of the dipoles and a second feed component for coupling with a second group of the dipoles, the first feed component and the second feed component being arranged at an angle.