CN115332770B

CN115332770B - Plug-in antenna and wireless communication equipment

Info

Publication number: CN115332770B
Application number: CN202211013530.0A
Authority: CN
Inventors: 黄盈
Original assignee: TP Link Technologies Co Ltd
Current assignee: TP Link Technologies Co Ltd
Filing date: 2022-08-23
Publication date: 2024-11-15
Anticipated expiration: 2042-08-23

Abstract

The application provides a plug-in antenna and wireless communication equipment, wherein the plug-in antenna comprises a substrate and an antenna body, the substrate comprises a plate body with a feed point and a grounding metal layer paved on the plate surface of the plate body, the grounding metal layer is provided with a metal forbidding area, the antenna body comprises a radiator, the radiator is arranged in the metal forbidding area and is electrically connected with the grounding metal layer, the radiator comprises an outer frame body and a bending body, a fracture is formed on the frame edge of the outer frame body so that the frame edge of the outer frame body is broken to form a transition branch and a coupling branch, the bending body is arranged in the outer frame body, one end of the bending body is connected with the transition branch, the other end of the bending body is in coupling connection with the coupling branch, and the coupling branch is electrically connected with the feed point. The plug-in antenna provided by the application not only has good radiation performance, but also has smaller overall size, and the miniaturization design is effectively realized.

Description

Plug-in antenna and wireless communication equipment

Technical Field

The application belongs to the technical field of wireless communication, and particularly relates to a plug-in antenna and wireless communication equipment.

Background

The plug-in antenna is widely used due to the advantages of small loss, high radiation efficiency and the like, but cannot be applied to wireless communication equipment with small volume such as a network camera, a panel AP, mobile WIFI, bluetooth equipment and the like due to the large size of the plug-in antenna. At present, in order to reduce the size of the plug-in antenna, some manufacturers of the plug-in antenna modify the structure of the plug-in antenna by sacrificing the radiation performance, but this may cause that the plug-in antenna cannot be applied to a wireless communication device with a high requirement on the radiation performance of the plug-in antenna. Therefore, how to achieve miniaturization design of the plug-in antenna while ensuring good radiation performance of the plug-in antenna becomes a great difficulty in industry.

Disclosure of Invention

The embodiment of the application aims to provide a plug-in antenna and wireless communication equipment, which are used for solving the technical problem that the plug-in antenna in the prior art cannot realize the miniaturization design of the plug-in antenna while ensuring the good radiation performance of the plug-in antenna.

In order to achieve the above purpose, the application adopts the following technical scheme: there is provided a plug-in antenna comprising:

The substrate comprises a plate body with a feed point and a grounding metal layer paved on the plate surface of the plate body, wherein the grounding metal layer is provided with a metal forbidden paving area;

The antenna body, set up in the metal forbidding area and with ground connection metal level electric connection, the antenna body includes the radiation body, the radiation body includes the frame body and buckles the body, the fracture has been seted up to the frame limit of frame body so that the frame limit disconnection of frame body forms transition minor matters and coupling minor matters, buckle the body set up in the frame body, buckle the body one end with transition minor matters are connected, buckle the body the other end with coupling minor matters coupling connection, coupling minor matters with feed point electric connection.

Optionally, the substrate further includes a power feeding body disposed in the metal laying-forbidden area, the power feeding body includes a first power feeding section and a second power feeding section, one end of the first power feeding section is connected with the power feeding point, the other end of the first power feeding section is connected with the coupling branch, and the second power feeding section is connected with the first power feeding section in parallel.

Optionally, the first feeding section is bent to form a first bending part; and/or the number of the groups of groups,

The second feed section is bent to form a second bending part.

Optionally, the width of the first feeding section is 0.5m-1.5mm; and/or the number of the groups of groups,

The width of the second feeding section is 0.5m-1.5mm; and/or the number of the groups of groups,

The sum of the length of the first feeding section and the length of the second feeding section is 20mm-22mm.

Optionally, the radiator is in a flat plate structure, and the radiator and the substrate are arranged in parallel.

Optionally, the bending body comprises a plurality of radiation sections connected in sequence, and the widths of at least two radiation sections are different from each other.

Optionally, the antenna body further includes a grounding arm, and the grounding arm is connected between the grounding metal layer and the outer frame body.

Optionally, the number of the grounding arms is multiple, and the multiple grounding arms are sequentially separated from each other along the frame edge of the outer frame body.

Optionally, the radiator further includes a picking and placing part connected with the outer frame body, and the picking and placing part is used for being matched with external assembly equipment to pick up the radiator.

Optionally, the picking and placing part is arranged in the outer frame.

The plug-in antenna provided by the application has at least the following beneficial effects: compared with the prior art, the plug-in antenna has the advantages that the antenna body is arranged in the metal laying-forbidden area, the antenna body is electrically connected with the grounding metal layer, one end of the bending body is connected with the transition branch and the other end of the bending body is coupled with the coupling branch, the coupling branch is simultaneously connected with the feed point of the plate body, when the plug-in antenna works, feed current sequentially passes through the coupling branch, the transition branch and the bending body from the feed point and returns to the coupling branch, so that first radiation current is formed, meanwhile, the edge of the metal laying-forbidden area can generate second radiation current, the radiation effect formed by the second radiation current is equivalent to the radiation effect of the dipole antenna, the omnidirectional radiation characteristic of the plug-in antenna is effectively realized under the interaction effect of the first radiation current and the second radiation current, the dielectric loss of the plug-in antenna is effectively reduced, and meanwhile, the radiation efficiency of the plug-in antenna is improved, and the first radiation path is effectively ensured by connecting one end of the bending body with the transition branch and the coupling branch and the other end of the bending body with the coupling branch, and the radiation effect of the bending body is effectively prolonged under the bending effect, so that the radiation effect of the first radiation path is good; in addition, through setting up the body of buckling in the frame body, avoided the body of buckling additionally to occupy the assembly space, effectively reduced the size of above-mentioned plug-in components antenna to the miniaturized design of above-mentioned plug-in components antenna has effectively been realized. Therefore, the plug-in antenna not only has good radiation performance, but also has smaller overall size, and the miniaturization design is effectively realized.

In order to achieve the above object, the present application further provides a wireless communication device, which includes the plug-in antenna according to any one of the embodiments.

The plug-in antenna of any one embodiment of the application is adopted in the wireless communication equipment, so that the volume of the wireless communication equipment is effectively reduced while the wireless communication equipment has good working performance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

Fig. 2 is a schematic diagram of the antenna body in the plug-in antenna shown in fig. 1;

Fig. 3 is a schematic top view of the antenna body shown in fig. 2;

fig. 4 is a schematic diagram of a second structure of the antenna body in the plug-in antenna shown in fig. 1;

fig. 5 is a schematic structural diagram of a power supply according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a power supply according to another embodiment of the present application;

fig. 7 is a planar radiation pattern of a package antenna according to an embodiment of the present application;

Fig. 8 is a graph of radiation efficiency of a package antenna according to an embodiment of the present application;

Fig. 9 is a graph of reflection coefficient of a package antenna according to an embodiment of the present application.

Wherein, each reference sign in the figure:

100. a substrate; 110. a plate body; 120. a grounded metal layer; 121. a metal no-lay area; 130. a power feeding body; 131. a first feed section; 1311. a first bending part; 132. a second feed section; 1321. a second bending part;

200. An antenna body; 210. a radiator; 211. an outer frame body; 2111. a fracture; 2112. transitional branches; 2113. coupling branches; 212. a bending body; 2121. a first radiation section; 2122. a second radiation section; 213. a picking and placing part; 220. a grounding arm; 230. a feed arm.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The first aspect of the present application provides a plug-in antenna, which can be applied to wireless communication devices such as a network camera, a panel AP, a mobile WIFI, a bluetooth device, and the like, and is used for receiving and transmitting wireless signals, and the plug-in antenna provided by the embodiments of the present application will be described with reference to the accompanying drawings.

Referring to fig. 1 to 4, the package antenna includes a substrate 100 and an antenna body 200. The substrate 100 includes a board body 110 and a grounding metal layer 120, the board body 110 has a feeding point (not shown in the figure), the feeding point is used for providing a feeding current to the antenna body 200, the grounding metal layer 120 is laid on a board surface of the board body 110, the grounding metal layer 120 is provided with a metal laying-out area 121, and it is understood that the grounding metal layer 120 is made of conductive metal, specifically, the grounding metal layer 120 is a copper layer. The antenna body 200 includes a radiator 210, the radiator 210 is disposed in the metal deposition-forbidden region 121, and the radiator 210 is electrically connected to the grounding metal layer 120, so as to achieve grounding of the radiator 210. The radiator 210 includes an outer frame 211 and a bending body 212, where a fracture 2111 is formed on a frame edge of the outer frame 211 to break the frame edge of the outer frame 211 to form a transition branch 2112 and a coupling branch 2113, the bending body 212 is disposed in the outer frame 211, one end of the bending body 212 is connected with the transition branch 2112, and the other end of the bending body 212 is coupled with the coupling branch 2113, in other words, a coupling gap is formed by separating one end of the bending body 212 far away from the transition branch 2112 from the coupling branch 2113, and the coupling branch 2113 is electrically connected with a feeding point.

Optionally, the outer frame 211 is electrically connected to the grounding metal layer 120; or the bending body 212 is electrically connected to the grounding metal layer 120. In this embodiment, the outer frame 211 is electrically connected to the grounding metal layer 120.

It should be noted that the shape structure of the outer frame 211 includes various shapes, for example, the outer frame 211 has a square structure; for another example, the outer frame 211 has a circular arc structure; the present invention is not particularly limited herein.

Compared with the prior art, the plug-in antenna of the application is characterized in that the antenna body 200 is arranged in the metal laying-out area 121, the antenna body 200 is electrically connected with the grounding metal layer 120, one end of the bending body 212 is connected with the transition branch 2112, the other end of the bending body 212 is coupled with the coupling branch 2113, the coupling branch 2113 is simultaneously connected with the feed point of the board 110, when the plug-in antenna works, the feed current sequentially passes through the coupling branch 2113, the transition branch 2112 and the bending body 212 from the feed point and returns to the coupling branch 2113, so that the first radiation current is formed, meanwhile, the edge of the metal laying-out area 121 can generate the second radiation current, the radiation effect formed by the second radiation current is equivalent to the radiation effect of the dipole antenna, the omnidirectional radiation characteristic of the plug-in antenna is effectively realized under the interaction effect of the first radiation current and the second radiation current, the dielectric loss of the plug-in antenna is effectively reduced, the radiation efficiency of the plug-in antenna is improved, and simultaneously, the good coupling performance of the plug-in antenna is ensured by connecting one end of the bending body 212 with the transition branch 2112 and the bending body 212 with the bending body 212, and the second radiation effect of the bending body 212 is effectively prolonged, and the radiation effect of the first radiation path is guaranteed, and the effect of the plug-in the antenna is prolonged; in addition, by arranging the bending body 212 in the outer frame 211, the bending body 212 is prevented from additionally occupying the assembly space, and the size of the plug-in antenna is effectively reduced, so that the miniaturization design of the plug-in antenna is effectively realized. Therefore, the plug-in antenna not only has good radiation performance, but also has smaller overall size, and the miniaturization design is effectively realized.

In one embodiment of the present application, referring to fig. 1, 5 and 6, the substrate 100 further includes a power supply 130, the power supply 130 is disposed in the metal deposition-forbidden region 121, the power supply 130 includes a first power supply section 131 and a second power supply section 132, one end of the first power supply section 131 is connected to the power supply point, the other end of the first power supply section 131 is connected to the coupling branch 2113, and the second power supply section 132 is connected in parallel to the first power supply section 131.

When the plug-in antenna works, the feeding current is input into the feeding body 130 from the feeding point, then a part of feeding current is input into the radiator 210 along the first feeding section 131, another part of feeding current enters the second feeding section 132 after passing through one end of the first feeding section 131, and then is input into the radiator 210 along the second feeding section 132 through the other end of the first feeding section 131, so that the feeding current is divided into two parts to be respectively input into the radiator 210, the bandwidth of the plug-in antenna is effectively widened, and the radiation performance of the plug-in antenna is further improved.

Specifically, referring to fig. 2 and 4 together, the antenna body 200 further includes a feeding arm 230, one end of the feeding arm 230 is connected to one end of the first feeding segment 131 far from the feeding point, and the other end of the feeding arm 230 is connected to the coupling branch 2113.

In one embodiment, referring to fig. 5 and fig. 6 together, in order to improve the matching characteristics of the plug-in antenna, the first feeding section 131 is bent to form a first bending portion 1311.

In another embodiment, referring to fig. 6, in order to improve the matching characteristics of the plug-in antenna, the second feeding section 132 is bent to form a second bending portion 1321.

In still another embodiment, referring to fig. 5 and fig. 6 together, in order to improve the matching characteristics of the plug-in antenna, the first feeding section 131 is bent to form a first bending portion 1311, and the second feeding section 132 is bent to form a second bending portion 1321.

It should be noted that the number, the protruding direction, and the protruding height of the first bending portion 1311 may be determined according to the practical application scenario, and are not specifically limited herein. For example, the number of first bending portions 1311 is one, two, or the like; as another example, the first bending portion 1311 is convexly disposed in a direction away from the second feeding section 132; for another example, the protrusion height of the first bending portion 1311 is 2mm, 3mm, or the like.

Similarly, the number, protruding direction and protruding height of the second bending portions 1321 may be determined according to the practical application scenario, which is not specifically limited herein. For example, the number of the second bending portions 1321 is one, two, or the like; as another example, the second bending portion 1321 is convexly disposed in a direction away from the first feeding section 131; for another example, the protruding height of the second bending portion 1321 is 2mm, 3mm, or the like.

In the above embodiment, referring to fig. 5, the width W1 of the first feeding section 131 is 0.5m-1.5mm, the width W1 of the first feeding section 131 may be specifically 0.5mm, 1mm, 1.5mm, etc., and by limiting the width W1 of the first feeding section 131 within the above range, the matching characteristics of the above-mentioned plug-in antenna can be effectively improved.

In the above embodiment, referring to fig. 5, the width W2 of the second feeding section 132 is 0.5m-1.5mm, the width W2 of the second feeding section 132 may be specifically 0.5mm, 1mm, 1.5mm, etc., and by limiting the width W2 of the second feeding section 132 within the above range, the matching characteristics of the above-mentioned plug-in antenna can be effectively improved.

In the above embodiment, the sum of the length of the first feeding section 131 and the length of the second feeding section 132 is 20mm to 22mm, and the sum of the length of the first feeding section 131 and the length of the second feeding section 132 may be specifically 20mm, 21mm, 22mm, or the like, and by limiting the sum of the length of the first feeding section 131 and the length of the second feeding section 132 to be within the above range, the matching characteristics of the above-described package antenna can be effectively improved.

In one embodiment of the present application, the radiator 210 has a flat plate structure, in other words, the outer frame 211 and the bending body 212 are on the same plane, and the radiator 210 and the substrate 100 are parallel to each other. By arranging the radiator 210 in a flat plate structure, the sectional height of the plug-in antenna is effectively reduced, thereby further realizing the miniaturization design of the plug-in antenna.

In one embodiment of the present application, referring to fig. 2, the bending body 212 includes a plurality of radiating segments connected in sequence, and the widths of at least two radiating segments are different from each other, so as to effectively improve the matching characteristics of the plug-in antenna.

It should be noted that, the number of the radiating segments and the width of each radiating segment may be determined according to the practical application, for example, referring to fig. 3, the radiating segments are divided into a plurality of first radiating segments 2121 and a plurality of second radiating segments 2122, the width W3 of the first radiating segments 2121 is smaller than the width W4 of the second radiating segments 2122, and the first radiating segments 2121 are connected between two adjacent second radiating segments 2122.

In an embodiment of the present application, referring to fig. 2 and fig. 4 together, the antenna body 200 further includes a grounding arm 220, and the grounding arm 220 is connected between the grounding metal layer 120 and the outer frame 211, so as to achieve grounding of the antenna body 200.

Specifically, the grounding metal layer 120 is formed with a grounding portion protruding into the metal deposition-preventing region 121, and the grounding arm 220 is connected between the grounding portion and the outer frame 211.

In the above embodiment, referring to fig. 2 and 4, the number of grounding arms 220 is plural, and accordingly, the number of grounding portions is plural, and each grounding arm 220 is disposed in one-to-one correspondence with each grounding portion. The plurality of grounding arms 220 are sequentially spaced apart along the frame edge of the outer frame 211. For example, the number of the grounding arms 220 is three, and the three grounding arms 220 are distributed in a triangular structure, so that the assembly stability between the antenna body 200 and the substrate 100 is effectively improved.

In an embodiment of the present application, referring to fig. 2 and fig. 4 together, the radiator 210 further includes a pick-and-place portion 213 connected to the outer frame 211, where the pick-and-place portion 213 is used to cooperate with an external assembly device to pick up the radiator 210, for example, a jet mechanical arm of the external assembly device attracts the pick-and-place portion 213 to pick up the antenna body 200 and transfer the antenna body 200. By providing the pick-and-place portion 213 and connecting the pick-and-place portion 213 with the outer frame body 211, not only is the assembly operation of the antenna body 200 facilitated, but also the matching characteristics of the above-described plug-in antenna are effectively improved.

Specifically, the radiator 210 has a flat plate structure, in other words, the outer frame 211, the bending body 212, and the pick-and-place portion 213 are all on the same plane.

The shape structure of the pick-and-place portion 213 includes various shapes, for example, the pick-and-place portion 213 has a square shape; for another example, the pick-and-place portion 213 has a circular arc structure; the present invention is not particularly limited herein.

In the above embodiment, referring to fig. 2 and fig. 4 together, the pick-and-place portion 213 is disposed in the outer frame 211, so that the pick-and-place portion 213 is prevented from occupying additional assembly space, thereby further realizing the miniaturization design of the plug-in antenna.

In summary, referring to fig. 7, the package antenna has good omnidirectional radiation characteristics, and referring to fig. 8 and 9, when the package antenna works in the frequency band of 2.4GHz-2.6GHz, the reflection coefficient of the package antenna is less than-10 dB, the radiation efficiency of the package antenna is greater than 90%, and the average gain in the horizontal plane of the package antenna is 1.5dBi, so that the package antenna has good radiation performance.

A second aspect of the present application provides a wireless communication device comprising a plug-in antenna according to any of the embodiments described above.

The wireless communication equipment of the application adopts the plug-in antenna of any embodiment, thereby effectively reducing the volume of the wireless communication equipment while ensuring that the wireless communication equipment has good working performance.

It should be noted that the above wireless communication devices include, but are not limited to, webcam, panel AP, mobile WIFI, and bluetooth devices.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. A patch antenna, the patch antenna comprising:

The antenna body is inserted in the metal forbidding area and electrically connected with the grounding metal layer, the antenna body comprises a radiating body, the radiating body comprises an outer frame body and a bending body, a fracture is formed in the frame edge of the outer frame body so that the frame edge of the outer frame body can be broken to form a transition branch and a coupling branch, the bending body is arranged in the outer frame body, one end of the bending body is connected with the transition branch, the other end of the bending body is connected with the coupling branch in a coupling mode, the coupling branch is electrically connected with a feeding point, so that feeding current sequentially passes through the coupling branch, the transition branch and the bending body and then returns to the coupling branch to form first radiation current, and the edge of the metal forbidding area generates second radiation current.

2. A package antenna as claimed in claim 1, wherein: the substrate also comprises a power feeder arranged in the metal forbidden region, the power feeder comprises a first power feeding section and a second power feeding section, one end of the first power feeding section is connected with the power feeding point, the other end of the first power feeding section is connected with the coupling branch, and the second power feeding section is connected with the first power feeding section in parallel.

3. A package antenna as claimed in claim 2, wherein:

The first feed section is bent to form a first bending part; and/or the number of the groups of groups,

The second feed section is bent to form a second bending part.

4. A package antenna as claimed in claim 2, wherein:

the width of the first feeding section is 0.5mm-1.5mm; and/or the number of the groups of groups,

The width of the second feeding section is 0.5mm-1.5mm; and/or the number of the groups of groups,

5. A plug-in antenna according to any one of claims 1-4, wherein: the radiator is of a flat plate structure, and the radiator and the substrate are arranged in parallel.

6. A plug-in antenna according to any one of claims 1-4, wherein: the bending body comprises a plurality of radiation sections which are connected in sequence, and the widths of at least two radiation sections are different from each other.

7. A plug-in antenna according to any one of claims 1-4, wherein: the antenna body further comprises a grounding arm, and the grounding arm is connected between the grounding metal layer and the outer frame body.

8. A package antenna according to claim 7, wherein: the number of the grounding arms is multiple, and the grounding arms are sequentially separated from each other along the frame edge of the outer frame body.

9. A plug-in antenna according to any one of claims 1-4, wherein: the radiator also comprises a picking and placing part connected with the outer frame body, and the picking and placing part is used for being matched with external assembly equipment to pick up the radiator.

10. A package antenna as claimed in claim 9, wherein: the picking and placing part is arranged in the outer frame body.

11. A wireless communication device, characterized by: the wireless communication device comprising a plug-in antenna according to any of claims 1-10.