CN114535740A

CN114535740A - Antenna, radiation unit and welding method of radiation unit

Info

Publication number: CN114535740A
Application number: CN202210208824.2A
Authority: CN
Inventors: 严新正; 关醒华
Original assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd; Comba Telecom Systems Guangzhou Co Ltd; Jingxin RF Technology Guangzhou Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-05-27

Abstract

The invention relates to an antenna, a radiation unit and a welding method of the radiation unit. And the first welding part and the second welding part synchronously contact with each other to realize welding matching. Because first weld part and first grafting portion interval set up, and the second weld part correspond with second grafting portion interval set up, at the reflow soldering in-process, the welding between first weld part and the second weld part can not receive the influence of first grafting portion and second grafting portion, make the solder joint that first weld part and second weld part formed all receive hot-blast convection current welding in the upper and lower two sides of reflow soldering in-process, welding stability is better, and also can avoid appearing the rosin joint, defects such as tin pearl, welding quality is high.

Description

Antenna, radiation unit and welding method of radiation unit

Technical Field

The invention relates to the technical field of mobile communication, in particular to an antenna, a radiation unit and a welding method of the radiation unit.

Background

The radiating unit is widely applied to the field of mobile communication due to the advantages of high processing precision, good consistency, stable performance and large design freedom. During the assembly process of the radiation unit, a reflow soldering process is usually adopted for soldering, and after soldering, the solder joint is prone to have defects such as cold solder, tin beads and the like, and the soldering quality is not high.

Disclosure of Invention

Therefore, it is necessary to provide an antenna, a radiation unit, and a method for welding the radiation unit, which are directed to the problems that the welding spot is easy to have the defects of cold solder, tin bead, etc. after the welding is completed, and the welding quality is not high.

The technical scheme is as follows:

in one aspect, there is provided a radiation unit comprising:

the bottom end of the balun component is provided with a first inserting part and a first welding part, and the first welding part and the first inserting part are arranged at intervals; and

the power dividing plate is provided with a second inserting portion and a second welding portion, the second inserting portion is used for being in inserting fit with the first inserting portion, and the second welding portion is used for being in welding fit with the first welding portion.

The technical solution is further explained below:

in one embodiment, the balun assembly includes a first balun member and a second balun member which are orthogonally arranged, the bottom end of the first balun member and the bottom end of the second balun member are both provided with the first inserting portion and the first welding portion, the first inserting portion on the first balun member and the first welding portion on the first balun member are arranged at an interval, and the first inserting portion on the second balun member and the first welding portion on the second balun member are arranged at an interval.

In one embodiment, the first plugging part comprises a first pin, a second pin and a third pin which are arranged at intervals along the transverse direction of the first balun piece, the second pin is positioned between the first pin and the third pin, and the first pin, the second pin and the third pin are all connected with the bottom end of the first balun piece, the first welding part comprises a first bonding pad and a second bonding pad, the first bonding pad and the second bonding pad are arranged at the bottom end of the first balun, the first bonding pad is arranged between the first pin and the second pin, the first pad, the first pin and the second pin are arranged at intervals, the second pad is arranged between the second pin and the third pin, and the second pad, the second pin and the third pin are arranged at intervals.

In one embodiment, the second plug part includes a first slot for plug-in fitting with the first pin, a second slot for plug-in fitting with the second pin, and a third slot for plug-in fitting with the third pin, the second soldering portion includes two third pads and two fourth pads, the two third pads are respectively disposed on two sides of the first pad and can be in welding fitting with the first pad along a transverse direction perpendicular to the first balun, and the two fourth pads are respectively disposed on two sides of the second pad and can be in welding fitting with the second pad.

In one embodiment, the first plugging portion comprises a fourth pin, a fifth pin and a sixth pin which are arranged at intervals along the transverse direction of the second balun piece, the fifth pin is positioned between the fourth pin and the sixth pin, and the fourth pin, the fifth pin and the sixth pin are all connected with the bottom end of the second balun piece, the first welding part comprises a fifth welding disc and a sixth welding disc, the fifth welding disc and the sixth welding disc are arranged at the bottom end of the second balun part, the fifth welding disc is arranged between the fourth pin and the fifth pin, the fifth pad, the fourth pin and the fifth pin are arranged at intervals, the sixth pad is arranged between the fifth pin and the sixth pin, and the sixth pad, the fifth pin and the sixth pin are arranged at intervals.

In one embodiment, the second plug part includes a fourth slot for plug-in fitting with the fourth pin, a fifth slot for plug-in fitting with the fifth pin, and a sixth slot for plug-in fitting with the sixth pin, the second soldering portion includes two seventh pads and two eighth pads, the two seventh pads are respectively disposed on two sides of the fifth pad and can be in welding fitting with the fifth pad along a transverse direction perpendicular to the second balun, and the two eighth pads are respectively disposed on two sides of the sixth pad and can be in welding fitting with the sixth pad.

In one embodiment, a width of the second pin matches an extension length of the second slot, a width of the fifth pin matches an extension length of the fifth slot, a projection of the second pin on the power distribution board overlaps a projection of the fifth pin on the power distribution board, and a difference between the extension length of the second slot and the extension length of the fifth slot is not zero.

In one embodiment, the power dividing plate is further provided with a solder mask, and an orthographic projection of the second welding part on the power dividing plate is in an area where the solder mask is located.

In another aspect, an antenna is provided, which includes the radiation unit.

In another aspect, a welding method applied to the radiation unit is provided, which is characterized by comprising the following steps:

inserting and matching a first inserting part on the bottom end of the balun component with a second inserting part of the power splitting plate to form a pre-welding structure, and enabling a first welding part of the balun component to be in welding and matching with a second welding part of the power splitting plate;

welding the pre-welding structure by adopting a reflow soldering process, so that the first welding part and the second welding part are welded into a whole;

after the top end of the balun component is connected with the radiation piece, the balun component and the radiation piece are welded into a whole.

The antenna, the radiation unit and the welding method of the radiation unit of the embodiment have at least the following advantages: 1. in the reflow soldering process, the soldering between the first soldering part and the second soldering part is not influenced by the first inserting part and the second inserting part, so that the upper surface and the lower surface of a soldering point formed by the first soldering part and the second soldering part are both subjected to hot air convection soldering in the reflow soldering process, the soldering stability is better, the defects of insufficient soldering, tin beads and the like can be avoided, and the soldering quality is high; 2. guarantee that balun subassembly and merit divide the welded fastening mutually noninterference and the influence of board and radiation piece, guarantee that balun subassembly and merit divide the welded fastening's of board stability better to the solder joint can not shelter from the sight after the welding is accomplished, thereby can inspect and clean directly perceivedly, fast, guarantee welding quality. In addition, the design and processing difficulty of the welding tool can be reduced, and the production cost can be effectively reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

FIG. 2 is a schematic view of a welding of a balun assembly and a power splitter plate of the radiating element of FIG. 1;

fig. 3 is a schematic structural view of a first balun of the radiating element of fig. 1;

fig. 4 is a schematic structural view of a second balun of the radiating element of fig. 1;

fig. 5 is a schematic structural view of a power splitting plate of the radiation unit of fig. 1.

Description of reference numerals:

100. a balun component; 110. a first insertion part; 111. a first pin; 112. a second pin; 113. a third pin; 114. a fourth pin; 115. a fifth pin; 116. a sixth pin; 120. a first weld; 121. a first pad; 122. a second pad; 123. a fifth pad; 124. a sixth pad; 130. a first balun; 140. a second balun; 200. a power division plate; 210. a second insertion part; 211. a first slot; 212. a second slot; 213. a third slot; 214. a fourth slot; 215. a fifth slot; 216. a sixth slot; 220. a second weld; 221. a third pad; 222. a fourth pad; 223. a seventh pad; 224. an eighth pad; 230. a solder resist layer; 300. a radiation sheet; 400. reflow soldering tooling.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In one embodiment, an antenna is provided that includes a radiating element with which signals can be transmitted and received.

As shown in fig. 1, specifically, the radiation unit includes a balun component 100 and a power splitting plate 200.

The balun assembly 100 can serve as a supporting structure of the whole radiating unit, and the balun assembly 100 can be used for supporting the radiating plate and feeding the radiating plate, so that signals can be transmitted.

As shown in fig. 3 and 4, in particular, the bottom end of the balun assembly 100 is provided with a first inserting portion 110 and a first welding portion 120. Moreover, the first welding portion 120 and the first inserting portion 110 are disposed at an interval, that is, the first welding portion 120 and the first inserting portion 110 are not adjacent to each other and have a space therebetween.

The power distribution board 200 may be a PCB board, and only needs to perform a power distribution function.

As shown in fig. 5, the power distribution plate 200 is provided with a second inserting portion 210 and a second welding portion 220. The second plug portion 210 is used for being plugged and matched with the first plug portion 110, and the second welding portion 220 is used for being welded and matched with the first welding portion 120.

In the radiation unit of the above embodiment, when welding, the first inserting part 110 located at the bottom end of the balun component 100 is inserted and matched with the second inserting part 210 on the power splitting board 200, so that the balun component 100 and the power splitting board 200 are pre-fixed to form a pre-welding structure. And, the first welding part 120 at the bottom end of the balun component 100 is also in contact with the second welding part 220 on the power dividing plate 200 synchronously to realize welding fit. And then, putting the pre-welding structure into a reflow soldering furnace, and soldering the pre-welding structure by adopting a reflow soldering process, so that the first soldering part 120 and the second soldering part 220 are soldered into a whole, and further the balun component 100 and the power division board 200 are soldered into a whole stably and reliably. Because first weld part 120 and first grafting portion 110 interval set up, and second weld part 220 correspond with second grafting portion 210 interval set up, in the reflow soldering in-process, the welding between first weld part 120 and the second weld part 220 can not receive the influence of first grafting portion 110 and second grafting portion 210, make the solder joint that first weld part 120 and second weld part 220 formed all receive hot-blast convection current welding in reflow soldering in-process upper and lower two sides, welding stability is better, and also can avoid appearing the rosin joint, defects such as tin pearl, welding quality is high.

As shown in fig. 2, when the pre-soldering structure is placed in a reflow furnace and soldered by using a reflow soldering process, an existing reflow soldering tool 400 may be selected to mount and fix the pre-soldering structure to ensure normal soldering.

As shown in fig. 1, after the bottom end of the balun component 100 and the power dividing plate 200 are stably and reliably welded and fixed, the top end of the balun component 100 and the radiating patch 300 may be connected, and then the balun component 100 and the radiating patch 300 are stably and reliably welded and fixed by adopting a selective wave soldering or other manners.

The connection between the top end of the balun component 100 and the radiating patch 300 may be performed by means of plugging or clipping.

Compared with the traditional mode of simultaneously welding and fixing the balun component 100, the power dividing plate 200 and the radiation piece 300, firstly, the balun component 100 and the power dividing plate 200 are welded and fixed, and then, the balun component 100 and the radiation piece 300 are welded and fixed, so that the welding and fixing of the balun component 100, the power dividing plate 200 and the radiation piece 300 are not interfered and influenced mutually, the stability of the welding and fixing of the balun component 100 and the power dividing plate 200 is better, and a welding spot cannot block a sight line after welding is completed, so that the inspection and cleaning can be visually and rapidly carried out, and the welding quality is ensured. In addition, the design and processing difficulty of the welding tool can be reduced, and the production cost can be effectively reduced.

Optionally, the top end of the balun assembly 100 is provided with corresponding plugging protrusions and corresponding soldering pads, the radiation piece 300 is provided with corresponding plugging grooves and corresponding soldering pads, the plugging protrusions are inserted into the plugging grooves, so that the balun assembly 100 is connected with the radiation piece 300, then the soldering pads on the balun assembly 100 are in soldering fit with the soldering pads on the radiation piece 300, soldering points are formed by adopting modes such as selective wave soldering, and the balun assembly 100 and the radiation piece 300 can be stably and reliably soldered into a whole.

When the balun component 100 and the radiating patch 300 are welded, an existing selective wave soldering tool can be selected for installation and fixation to ensure normal welding.

As shown in fig. 3 and 4, the balun assembly 100 may optionally include a first balun member 130 and a second balun member 140 that are orthogonally disposed.

The first balun 130 and the second balun 140 may be plate-shaped structures. Specifically, the first balun 130 and the second balun 140 may be both PCB baluns, and of course, the first balun 130 and the second balun 140 may also be both plastic baluns.

Specifically, the first balun element 130 and the second balun element 140 are connected in a conventional manner of plug-in fitting, so that the first balun element 130 is perpendicular to the second balun element 140 and arranged in a cross shape.

More specifically, a corresponding slot may be provided on the first balun element 130 and/or the second balun element 140, so that the first balun element 130 can be inserted into the second balun element 140.

As shown in fig. 3 and 4, the bottom end of the first balun 130 and the bottom end of the second balun 140 are both provided with a first inserting portion 110 and a first welding portion 120. Moreover, the first inserting part 110 on the first balun 130 and the first welding part 120 on the first balun 130 are arranged at an interval; the first mating part 110 of the second balun element 140 is spaced apart from the first soldering part 120 of the second balun element 140. In this way, the first balun element 130 and the second balun element 140 can be mounted on the power splitting board 200 by the plugging fit of the first plugging portion 110 and the second plugging portion 210 to form a pre-welded structure. Moreover, the first welding portion 120 of the first balun 130 can be synchronously matched with the corresponding second welding portion 220 of the power splitting plate 200 in a welding manner, and the first welding portion 120 of the second balun 140 can be synchronously matched with the corresponding second welding portion 220 of the power splitting plate 200 in a welding manner. Moreover, in the reflow soldering process, the soldering between the first soldering portion 120 and the corresponding second soldering portion 220 is not affected by the first inserting portion 110 and the second inserting portion 210, so that the upper surface and the lower surface of the soldering point formed by the first soldering portion 120 and the corresponding second soldering portion 220 are both subjected to hot air convection soldering in the reflow soldering process, the soldering stability is better, the defects of insufficient soldering, tin balls and the like can be avoided, and the soldering quality is high.

The insertion fit between the first insertion part 110 and the second insertion part 210 can be realized in a shaft hole fit manner, or in a tooth and groove fit manner, and only the requirement that the balun component 100 and the power splitting plate 200 can be stably and reliably mounted and connected to form a pre-welding structure is met.

As shown in fig. 3 and 5, particularly in the assembly connection between the first balun element 130 and the power splitting board 200, the first mating part 110 includes a first pin 111, a second pin 112 and a third pin 113 spaced apart from each other along the transverse direction (as shown in the direction a in fig. 3) of the first balun element 130; the second insertion portion 210 includes a first insertion groove 211 for insertion fitting with the first pin 111, a second insertion groove 212 for insertion fitting with the second pin 112, and a third insertion groove 213 for insertion fitting with the third pin 113. The first soldering part 120 includes a first pad 121 and a second pad 122; the second soldering part 220 includes two third pads 221 and two fourth pads 222.

The second pin 112 is located between the first pin 111 and the third pin 113. The first pin 111, the second pin 112 and the third pin 113 are connected to the bottom end of the first balun 130.

The first bonding pad 121 and the second bonding pad 122 are disposed at the bottom end of the first balun 130. In this way, when the first balun element 130 is assembled and connected with the power splitting board 200, the first pin 111 is inserted into the first slot 211, the second pin 112 is inserted into the second slot 212, and the third pin 113 is inserted into the third slot 213, so that the bottom end of the first balun element 130 can be stably and reliably assembled and connected with the power splitting board 200.

And, in a transverse direction (as shown in the C direction of fig. 5) perpendicular to the first balun 130, two third pads 221 are respectively disposed on both sides of the first pad 121 and are both capable of being solder-fitted with the first pad 121, and two fourth pads 222 are respectively disposed on both sides of the second pad 122 and are both capable of being solder-fitted with the second pad 122. Thus, after the first balun 130 and the power splitting plate 200 are assembled and connected; synchronously enabling the first bonding pad 121 to be located between the two third bonding pads 221 which are oppositely arranged at intervals, and enabling the first bonding pad 121 and the two third bonding pads 221 to be in welding fit, so that welding points are formed between two sides of the first bonding pad 121 and the two third bonding pads 221 respectively; and synchronously enabling the second bonding pad 122 to be positioned between the two fourth bonding pads 222 which are oppositely arranged at intervals, and enabling the second bonding pad 122 and the two fourth bonding pads 222 to be in welding fit, so that welding points are respectively formed between two sides of the second bonding pad 122 and the two fourth bonding pads 222.

Meanwhile, in combination with the spaced arrangement of the first pin 111, the second pin 112 and the third pin 113, the first slot 211, the second slot 212 and the third slot 213 are also correspondingly spaced, in combination with the first pad 121 disposed between the first pin 111 and the second pin 112, and the first pad 121 disposed between the first pin 111 and the second pin 112 and the second pad 121 disposed between the first pin 111 and the second pin 112, the second pad 122 disposed between the second pin 112 and the third pin 113, and the two third pads 221 disposed between the first slot 211 and the second slot 212, and the two fourth pads 222 disposed between the second slot 212 and the third slot 213, so that, during the reflow soldering process, the welding between the first pad 121 and the two third pads 221 and the welding between the second pad 122 and the two fourth pads 222 are not affected by the pins (the first pin 111, the second pin 112, and the third pin 113) and the slots (the first slot 211, the second slot 212, and the third slot 213), so that the upper and lower surfaces of the welding point formed by the first pad 121 and the two third pads 221 and the welding point formed by the second pad 122 and the two fourth pads 222 are subjected to hot air convection welding in the reflow process, the welding stability is better, the defects of insufficient solder, tin balls and the like can be avoided, and the welding quality is high.

As shown in fig. 4 and 5, particularly in the assembly connection between the second balun element 140 and the power splitting board 200, the first mating part 110 includes a fourth pin 114, a fifth pin 115 and a sixth pin 116 spaced apart from each other in the transverse direction (as shown in the direction B in fig. 4) of the second balun element 140; the second plug section 210 includes a fourth slot 214 for plug-fitting with the fourth pin 114, a fifth slot 215 for plug-fitting with the fifth pin 115, and a sixth slot 216 for plug-fitting with the sixth pin 116. The first soldering part 120 includes a fifth pad 123 and a sixth pad 124; the second solder part 220 includes two seventh pads 223 and two eighth pads 224.

The fifth pin 115 is located between the fourth pin 114 and the sixth pin 116. The fourth pin 114, the fifth pin 115 and the sixth pin 116 are connected to the bottom end of the second balun 140.

The fifth pad 123 and the sixth pad 124 are disposed at the bottom end of the second balun 140. In this way, when the second balun element 140 is assembled and connected with the power splitting board 200, the fourth pin 114 is inserted into the fourth slot 214, the fifth pin 115 is inserted into the fifth slot 215, and the sixth pin 116 is inserted into the sixth slot 216, so that the bottom end of the second balun element 140 can be stably and reliably assembled and connected with the power splitting board 200.

And, in a transverse direction (as shown in a direction D of fig. 5) perpendicular to the second balun 140, two seventh pads 223 are respectively disposed on both sides of the fifth pad 123 and are both capable of being solder-fitted with the fifth pad 123, and two eighth pads 224 are respectively disposed on both sides of the sixth pad 124 and are both capable of being solder-fitted with the sixth pad 124. Thus, after the second balun element 140 and the power dividing plate 200 are assembled and connected; synchronously enabling the fifth bonding pad 123 to be positioned between the two seventh bonding pads 223 arranged at intervals, and enabling the fifth bonding pad 123 and the two seventh bonding pads 223 to be in welding fit, so that welding points are respectively formed on two sides of the fifth bonding pad 123 and the two seventh bonding pads 223; the synchronization makes the sixth pad 124 located between the two eighth pads 224 oppositely spaced apart, and makes the sixth pad 124 and the two eighth pads 224 capable of being in welding fit, so that two sides of the sixth pad 124 form welding points with the two eighth pads 224 respectively.

Meanwhile, in combination with the spaced arrangement of the fourth pin 114, the fifth pin 115 and the sixth pin 116, the fourth slot 214, the fifth slot 215 and the sixth slot 216 are also correspondingly spaced, in combination with the fifth pad 123 disposed between the fourth pin 114 and the fifth pin 115, and the sixth pad 124 disposed between the fifth pin 115 and the sixth pin 116, and the seventh pad 223 disposed between the fourth slot 214 and the fifth slot 215, and the eighth pad 224 disposed between the fifth slot 215 and the sixth slot 216, and thus, during the reflow soldering process, the welding between the fifth pad 123 and the two seventh pads 223 and the welding between the sixth pad 124 and the two eighth pads 224 are not affected by the pins (the fourth pin 114, the fifth pin 115 and the sixth pin 116) and the slots (the fourth slot 214, the fifth slot 215 and the sixth slot 216), so that the upper and lower surfaces of the welding point formed by the fifth pad 123 and the two seventh pads 223 and the welding point formed by the sixth pad 124 and the two eighth pads 224 are subjected to hot air convection welding in the reflow process, the welding stability is better, the defects of insufficient solder, tin balls and the like can be avoided, and the welding quality is high.

Optionally, the outline shape of the first pad 121 matches the outline shape of the third pad 221; the outline shape of the second pad 122 matches the outline shape of the fourth pad 222; the outline shape of the fifth pad 123 matches the outline shape of the seventh pad 223; the outline shape of the sixth pad 124 matches the outline shape of the eighth pad 224. Therefore, stable and reliable welding matching can be achieved among the welding pads, and stability, reliability and uniformity of welding spots are guaranteed.

In the actual use process, because the first balun 130 and the second balun 140 have polarity distinction, that is, one is a positive electrode and the other is a negative electrode, in order to ensure that no error occurs in the installation process.

Optionally, the width of the second pins 112 matches the extension length of the second slot 212, that is, the second pins 112 can be smoothly and stably inserted into the second slot 212; the width of the fifth pins 115 matches the extension length of the fifth slot 215, i.e. the fifth pins 115 can be smoothly and stably inserted into the fifth slot 215.

And, the projection of the second pin 112 on the power dividing board 200 overlaps with the projection of the fifth pin 115 on the power dividing board 200. Thus, when the first balun piece 130 and the second balun piece 140 are inserted and matched, the second pin 112 and the fifth pin 115 are also arranged in a cross shape, and the whole balun component 100 and the power splitting board 200 are stably and reliably connected and assembled by combining the insertion of the first pin 111 and the first slot 211, the insertion of the third pin 113 and the third slot 213, the insertion of the fourth pin 114 and the fourth slot 214, and the insertion of the sixth pin 116 and the sixth slot 216. In addition, the second pin 112 and the fifth pin 115 are intersected with each other, and the first pin 111, the third pin 113, the fourth pin 114 and the sixth pin 116 are distributed in the circumferential direction of the second pin 112 and the fifth pin 115, so that the balun component 100 and the power splitting plate 200 have five contact positions, accurate assembly of the balun component 100 and the power splitting plate 200 can be realized, and stability and reliability of assembly can be improved.

Meanwhile, the difference between the extension length of the second slot 212 and the extension length of the fifth slot 215 is not zero, which may be that the extension length of the second slot 212 is greater than the extension length of the fifth slot 215, or that the extension length of the fifth slot 215 is greater than the extension length of the second slot 212. Thus, it is ensured that the second pin 112 can be inserted into the second slot 212 and cannot be inserted into the fifth slot 215, or that the fifth pin 115 can be inserted into the fifth slot 215 and cannot be inserted into the second slot 212, so that the first balun piece 130 and the second balun piece 140 can be assembled and connected with the power distribution board 200 only through accurate postures, thereby avoiding assembly errors and having a good fool-proof effect.

It should be noted that the size of the first pin 111, the size of the second pin 112, the size of the third pin 113, the size of the fourth pin 114, the size of the fifth pin 115, and the size of the sixth pin 116, as well as the size of the first slot 211, the size of the second slot 212, the size of the third slot 213, the size of the fourth slot 214, the size of the fifth slot 215, and the size of the sixth slot 216, may be flexibly designed or adjusted according to actual use requirements, and are not limited herein. In addition, to facilitate the plugging, two ends of the first slot 211, two ends of the second slot 212, two ends of the third slot 213, two ends of the fourth slot 214, two ends of the fifth slot 215, and two ends of the sixth slot 216 may be chamfered.

Similarly, the size of the first pad 121, the size of the second pad 122, the size of the third pad 221, the size of the fourth pad 222, the size of the fifth pad 123, the size of the sixth pad 124, the size of the seventh pad 223, and the size of the eighth pad 224 may be flexibly designed or adjusted according to actual use requirements, and may not be limited herein.

As shown in fig. 5, the power splitter plate 200 is further provided with a solder mask layer 230, and an orthographic projection of the second solder part 220 on the power splitter plate 200 falls within an area where the solder mask layer 230 is located. Therefore, the second welding part 220 and the first welding part 120 can be prevented from short circuit at the welding point, and the reliability of electrical connection is ensured. The solder resist layer 230 may be a coating layer such as solder resist green oil that can function as an insulation barrier. The specific size of the solder mask layer 230 can be flexibly designed or adjusted according to actual use requirements, and only the requirement of realizing insulation and isolation between a solder joint and the outside is met.

In one embodiment, there is also provided a welding method applied to the radiation unit of any of the above embodiments, including the steps of:

the first plugging part 110 on the bottom end of the balun component 100 is plugged and matched with the second plugging part 210 of the power distribution plate 200 to form a pre-welding structure, and the first welding part 120 of the balun component 100 is welded and matched with the second welding part 220 of the power distribution plate 200;

the pre-welding structure is welded by adopting a reflow soldering process, so that the first welding part 120 and the second welding part 220 are welded into a whole;

after the top end of the balun component 100 is connected to the radiation plate 300, the balun component 100 and the radiation plate 300 are welded into a whole.

The welding method of the radiation unit of the above embodiment has at least the following advantages: 1. in the reflow soldering process, the soldering between the first soldering part 120 and the second soldering part 220 is not affected by the first inserting part 110 and the second inserting part 210, so that the upper surface and the lower surface of a solder joint formed by the first soldering part 120 and the second soldering part 220 are both subjected to hot air convection soldering in the reflow soldering process, the soldering stability is better, the defects of insufficient soldering, tin beads and the like can be avoided, and the soldering quality is high; 2. guarantee that the welded fastening mutually noninterference and the influence of balun subassembly 100 and merit minute board 200 and radiation piece 300, guarantee that the welded fastening's of balun subassembly 100 and merit minute board 200 stability is better to the solder joint can not shelter from the sight after the welding is accomplished, thereby can inspect and clean directly perceivedly, fast, guarantee welding quality. In addition, the design and processing difficulty of the welding tool can be reduced, and the production cost can be effectively reduced.

The "certain body" and the "certain portion" may be a part corresponding to the "member", that is, the "certain body" and the "certain portion" may be integrally formed with the other part of the "member"; the "part" can be made separately from the "other part" and then combined with the "other part" into a whole. The expressions "a certain body" and "a certain part" in the present application are only one example, and are not intended to limit the scope of the present application for reading convenience, and the technical solutions equivalent to the present application should be understood as being included in the above features and having the same functions.

It should be noted that, the components included in the "unit", "assembly", "mechanism" and "device" of the present application can also be flexibly combined, i.e., can be produced in a modularized manner according to actual needs, so as to facilitate the modularized assembly. The division of the above-mentioned components in the present application is only one example, which is convenient for reading and is not a limitation to the protection scope of the present application, and the same functions as the above-mentioned components should be understood as equivalent technical solutions in the present application.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as "fixed transmission connection" with another element, the two elements may be fixed in a detachable connection manner or in an undetachable connection manner, and power transmission can be achieved, such as sleeving, clamping, integrally-formed fixing, welding and the like, which can be achieved in the prior art, and is not cumbersome. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It should also be understood that in interpreting the connection or positional relationship of the elements, although not explicitly described, the connection and positional relationship are to be interpreted as including a range of error that should be within an acceptable range of deviation from the particular values as determined by one skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, without limitation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not 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 should be subject to the appended claims.

Claims

1. A radiating element, comprising:

the bottom end of the balun component is provided with a first plug-in part and a first welding part, and the first welding part and the first plug-in part are arranged at intervals; and

2. The radiation unit according to claim 1, wherein the balun assembly includes a first balun member and a second balun member which are orthogonally disposed, a bottom end of the first balun member and a bottom end of the second balun member are both provided with the first insertion portion and the first soldering portion, the first insertion portion on the first balun member is spaced apart from the first soldering portion on the first balun member, and the first insertion portion on the second balun member is spaced apart from the first soldering portion on the second balun member.

3. The radiating element of claim 2, wherein the first mating portion includes first, second and third pins spaced apart in a transverse direction of the first balun member, the second pin being positioned between the first and third pins, and the first pin, the second pin and the third pin are all connected with the bottom end of the first balun piece, the first welding part comprises a first bonding pad and a second bonding pad, the first bonding pad and the second bonding pad are arranged at the bottom end of the first balun, the first bonding pad is arranged between the first pin and the second pin, the first pad, the first pin and the second pin are arranged at intervals, the second pad is arranged between the second pin and the third pin, and the second pad, the second pin and the third pin are arranged at intervals.

4. The radiating element of claim 3, wherein the second plug portion includes a first slot for plug-fit engagement with the first pin, a second slot for plug-fit engagement with the second pin, and a third slot for plug-fit engagement with the third pin, and the second soldering portion includes two third pads and two fourth pads, and in a transverse direction perpendicular to the first balun, the two third pads are respectively disposed on two sides of the first pad and both can be solder-fitted with the first pad, and the two fourth pads are respectively disposed on two sides of the second pad and both can be solder-fitted with the second pad.

5. The radiating element of claim 3, wherein the first mating portion includes a fourth pin, a fifth pin and a sixth pin spaced apart along a lateral direction of the second balun, the fifth pin being located between the fourth pin and the sixth pin, and the fourth pin, the fifth pin and the sixth pin are all connected with the bottom end of the second balun piece, the first welding part comprises a fifth welding disc and a sixth welding disc, the fifth welding disc and the sixth welding disc are arranged at the bottom end of the second balun part, the fifth welding disc is arranged between the fourth pin and the fifth pin, the fifth pad, the fourth pin and the fifth pin are arranged at intervals, the sixth pad is arranged between the fifth pin and the sixth pin, and the sixth pad, the fifth pin and the sixth pin are arranged at intervals.

6. The radiating element of claim 5, wherein the second plug portion includes a fourth slot for plug-fit engagement with the fourth pin, a fifth slot for plug-fit engagement with the fifth pin, and a sixth slot for plug-fit engagement with the sixth pin, and the second soldering portion includes two seventh pads and two eighth pads, the two seventh pads are respectively disposed on two sides of the fifth pad and can be solder-fitted with the fifth pad, and the two eighth pads are respectively disposed on two sides of the sixth pad and can be solder-fitted with the sixth pad, along a transverse direction perpendicular to the second balun.

7. The radiating element of claim 6, wherein a width of the second pin matches an extended length of the second slot, a width of the fifth pin matches an extended length of the fifth slot, a projection of the second pin on the power splitter board overlaps a projection of the fifth pin on the power splitter board, and a difference between the extended length of the second slot and the extended length of the fifth slot is not zero.

8. The radiating unit according to any one of claims 1 to 7, characterized in that the power dividing plate is further provided with a solder mask, and an orthographic projection of the second welding part on the power dividing plate falls within an area of the solder mask.

9. An antenna comprising a radiating element according to any one of claims 1 to 8.

10. A welding method applied to the radiant element according to any one of claims 1 to 8, characterized in that it comprises the following steps:

inserting and matching a first inserting part on the bottom end of the balun component with a second inserting part of the power division plate to form a prewelding structure, and enabling a first welding part of the balun component to be in welding fit with a second welding part of the power division plate;