CN218827822U

CN218827822U - WiFi dual-frequency antenna

Info

Publication number: CN218827822U
Application number: CN202223610994.8U
Authority: CN
Inventors: 吴世健; 刘文超; 徐雨
Original assignee: Shenzhen Sunway Communication Co Ltd
Current assignee: Shenzhen Sunway Communication Co Ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-04-07
Anticipated expiration: 2032-12-31

Abstract

The embodiment of the application relates to the technical field of antenna structures, in particular to a WiFi dual-frequency antenna. The WiFi dual-frequency antenna is applied to a router and comprises: a PCB board; the radiating unit is arranged on the surface of the PCB; the radiating unit forms a special-shaped dipole antenna form; the PCB is vertically arranged on the side edge of the mainboard of the router and is connected to the connecting port of the mainboard through a radio frequency coaxial line. The PCB is used as a carrier of the radiation unit, and the radio frequency coaxial line is electrically connected with the antenna and the mainboard, so that the assembly mode is simple and reliable, the occupied space is small, a certain clearance environment of the antenna can be ensured, and the antenna is far away from the interference of some electronic devices in the router; the PCB of the antenna is a single panel, which is beneficial to reducing the production cost; because the radiating element of the antenna is in the form of a special-shaped dipole antenna, the performance of the antenna is improved, and the effects of double-frequency, high efficiency and low gain of the antenna are realized.

Description

WiFi dual-frequency antenna

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of antenna structures, in particular to a WiFi dual-frequency antenna.

[ background ] A method for producing a semiconductor device

Along with the small-size development of router net expert class product, built-in PCB or FPC form antenna has been adopted gradually, has also had harsher requirement to WIFI dual-frenquency antenna, for example, require that the router has high efficiency under the limited accommodation space's the condition still need reduce the gain simultaneously to reduce mainboard and environment to the influence of antenna three-dimensional field pattern graph circularity. How to realize the high efficiency and the low gain of the WIFI dual-frequency antenna under the conditions of limited space and no influence on a router is one of the problems to be solved in the industry at present.

[ Utility model ] A method for manufacturing a semiconductor device

Embodiments of the present application are directed to a WiFi dual-band antenna, so as to overcome at least some of the defects in the prior art.

The WiFi dual-frequency antenna applied to the router provided by the embodiment of the application comprises: a PCB board; the radiating unit is arranged on the surface of the PCB; the radiating unit forms a special-shaped dipole antenna form; the PCB is vertically arranged on the side edge of the mainboard of the router and is connected to the connecting port of the mainboard through a radio frequency coaxial line.

Optionally, the thickness of the PCB board is 0.6mm, and the distance between the PCB board and the side edge of the main board is 6mm.

Optionally, the diameter of the radio frequency coaxial line is 1.13mm; the length of the radio frequency coaxial line is 76mm.

Optionally, a buckle for fixing the PCB is arranged inside the housing of the router; the PCB is fixed in the router through a buckle and is vertically arranged on the side edge of the mainboard.

Optionally, the PCB board is further provided with: a first pad configured as an antenna feed point; a second pad configured as a ground point.

Optionally, the radiation unit comprises: a first radiation section; a first branch and a second branch with preset lengths are formed on the first radiation part; a second radiation section; a fourth branch and a fifth branch with preset lengths are formed on the second radiation part; a third radiation section; wherein the first and second radiating portions are spaced apart; the third radiating portion is surrounded by the second radiating portion.

Optionally, the first pad is disposed at the first radiation part; the second pad is disposed at the second radiation part.

Optionally, the first stub and the fourth stub have a preset length, so that the dual-band antenna is tuned to a first frequency band; the second branch and the fifth branch have preset lengths so that the dual-frequency antenna is tuned to a second frequency band.

Optionally, the first frequency band is 2.4-2.5GHz; the second frequency band is 5.15-5.85GHz.

Optionally, the third radiating portion is coupled to the second frequency band by a flying trace.

The antenna provided by the application has the advantages that: the PCB is used as a carrier of the radiation unit, and the antenna and the mainboard are electrically connected by the radio frequency coaxial line, so that the assembly mode is simple and reliable, the occupied space is small, a certain clearance environment of the antenna can be ensured, and the antenna is far away from the interference of some electronic devices in the router; the PCB of the antenna is a single panel, which is beneficial to reducing the production cost; because the radiating element of the antenna is in the form of a special-shaped dipole antenna, the performance of the antenna is improved, and the effects of double-frequency, high efficiency and low gain of the antenna are realized.

[ description of the drawings ]

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic view illustrating an assembly of an antenna in a router according to an embodiment of the present application;

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

fig. 3 shows performance parameters S11 of the antenna provided in the embodiment of the present application;

FIG. 4a shows a gain of a conventional antenna compared to gain data of an antenna of the present application in a first frequency band;

FIG. 4b shows the efficiency of the conventional antenna compared to the efficiency data of the antenna of the present application in the first frequency band;

FIG. 4c shows the gain of a conventional antenna compared to the gain data of the antenna of the present application in the second frequency band;

fig. 4d shows the efficiency of the conventional antenna compared to the efficiency data of the antenna of the present application in the second frequency band;

FIG. 4e shows the efficiency and gain data comparison of a conventional antenna to the present application antenna for each frequency band;

fig. 5a shows a field pattern diagram of the antenna provided by the embodiment of the present application in the first frequency band;

fig. 5b is a diagram illustrating an antenna field pattern of the antenna provided by the embodiment of the present application in the second frequency band;

fig. 5c shows antenna patterns of the antenna provided by the embodiment of the present application in two frequency bands.

Description of the reference numerals:

100.WiFi dual-frequency antenna; 10.PCB board; l10. Length of PCB board; b10. Width of PCB board; 20. a radiation unit; 21. a first radiation section; 211. a first branch section; l1, the length of the first branch; 212. a second branch knot; l2, the length of the second branch; 22. a second radiation section; 221. a fourth branch knot; l4, length of the fourth branch; 222. a fifth branch knot; l5, length of fifth branch; 23. a third radiation section; 24. a first pad; 25. a second pad; 200. a router; 210. a housing of the router; 220. a main board of the router; 230. a radio frequency coaxial line; 240. and (6) buckling.

[ detailed description ] embodiments

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

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 application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or to implicitly indicate the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two sets), "plural pieces" refers to two or more (including two pieces).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

As shown in fig. 1 and 2, the WiFi dual-band antenna 100 (hereinafter, referred to as "antenna 100" for convenience of description) applied to a router provided in the present application may include a PCB board 10 and a radiation unit 20.

The PCB board 10 is vertically disposed on a side of the main board 220 of the router inside the housing 210 of the router, and is connected to a connection port (not shown) of the main board 220 through a radio frequency coaxial line 230. The PCB board 10 and the rf coaxial line 230 are connected by soldering, so that the PCB board and the rf coaxial line are electrically connected and fixed to each other.

The radiation unit 20 is a sheet-shaped, formed in a form of a shaped dipole antenna, and is disposed on one surface of the PCB board 10. Which may be specifically fixed to the surface of the PCB 10 by any suitable means (e.g., a patch type), can convert the electrical signals fed from the main board 220 of the router into electromagnetic radiation and radiate the electromagnetic radiation into the air at a specific frequency.

As shown in fig. 1, the spacing K between the pcb board 10 and the side of the main board 220 is 6mm. The diameter of the radio frequency coaxial line 230 is 1.13mm, and the length of the radio frequency coaxial line 230 is 76mm. The housing 210 of the router 200 is provided with a clip 240 for fixing the PCB inside, and the PCB 10 is fixed inside the router 200 by the clip 24 and vertically arranged on the side of the main board 220.

As shown in fig. 2, further, in the embodiment of the present application, the length L10 of the PCB board 10 may be set to 35.7mm, the width B10 may be set to 11mm, and the thickness may be set to 0.6mm. It should be noted that the "long side" refers to a longer side of the PCB 10, and the "wide side" refers to a shorter side of the PCB 10.

In the process of implementing the embodiment of the application, the applicant finds that: the interval K between the sides of the PCB board 10 and the main board 220 is set to be the specific size, and the line diameter and the length of the radio frequency coaxial line 230 are set to be the specific size, so that the structure of the whole product of the router 200 is more compact, and the use requirements on the size of an antenna and the miniaturization of the router structure are well met.

Referring to fig. 2, the radiation unit 20 may include a first radiation portion 21, a second radiation portion 22, and a third radiation portion 23. The first radiation part 21 and the second radiation part 22 are spaced apart from each other, the third radiation part 23 is surrounded by the second radiation part 22, the first radiation part 21 is formed with a first branch 211 and a second branch 212 having a preset length, and the second radiation part 22 is formed with a fourth branch 221 and a fifth branch 222 having a preset length.

It should be noted that terms such as "first", "second", "third" and "third" are used herein for ease of description to modify the radiating portion, and terms such as "first", "second", "third" and "fourth" are used to modify the branches. The terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not intended to specifically limit the radiating portions and branches that they modify.

Specifically, the first branch 211 and the fourth branch 221 have preset lengths for tuning the antenna 100 to the first frequency band, and the second branch 212 and the fifth branch 222 have preset lengths for tuning the antenna 100 to the second frequency band, so that dual-band coverage is achieved. The third radiating portion 23 is coupled to the second frequency band by a flying trace on the PCB 100.

Further, the length L1 of the first branch 211 may be set to 9.96mm, and the length L4 of the fourth branch 221 may be set to 4.95mm, so that the antenna 100 is tuned to the first frequency band of 2.4-2.5GHz; the length L2 of the second branch 212 may be set to 4.93mm and the length L5 of the fifth branch 222 may be set to 6.05mm, so that the antenna 100 is tuned to a second frequency band of 5.15-5.85GHz. The flying trace of the third radiating portion 23 couples to the second frequency band, so that the bandwidth of S11 in the second frequency band can be deepened.

The PCB board 10 is further provided thereon with a first pad 24 and a second pad 25, wherein the first pad 24 is configured as an antenna feeding point, and the second pad 25 is configured as a feeding point, wherein the first pad 24 may be provided at the first radiation part 21, and the second pad 25 may be provided at the second radiation part 22.

The rf coaxial line 230 is a transmission path connecting the "radiating portion" (the first radiating portion 21, the second radiating portion 22) and the main board 220 of the router, and generally has good shielding and signal transmission performance to avoid the wireless signals received or transmitted by the "radiating portion" from being adversely interfered during transmission. Specifically, the inner conductor of the rf coaxial line 230 is electrically connected to the feeding point, and the outer conductor of the rf coaxial line 230 is electrically connected to the feeding point.

The application further provides specific examples of the antenna parameters of the antenna. Fig. 3 shows performance parameters S11 of the antenna, fig. 4a to 4d show data comparison between the conventional embodiment and the embodiment of the present application, fig. 4e shows efficiency and gain data in fig. 4a to 4d, fig. 5a shows an antenna pattern diagram in a first frequency band (2.4 GHz), fig. 5b shows an antenna pattern diagram in a second frequency band (5 GHz), and fig. 5c shows a directional diagram of the antenna.

As can be seen from fig. 3, the antenna has good matching with the microstrip circuit of the router and the environment, and the antenna has high efficiency. As can be seen from fig. 4a to 4e, compared with the conventional antenna structure, the antenna provided in the embodiment of the present application can optimize the gain mean value under the first frequency band to 3.3dBi and the gain mean value under the second frequency band to 3.5dBi on the premise of not deteriorating efficiency, the gain mean value of the second frequency band is reduced by 1.5dBi compared with the conventional scheme, the peak gain is optimized from 6.2dBi to 3.8dBi, and is reduced by 2.4dBi, the performance reaches the expected target, and the antenna has a good spatial coverage capability and can meet the use requirement of wireless communication. As can be seen from fig. 5a to 5c, the antenna provided by the present application has the characteristics of high radiation efficiency and good radiation omni-directionality. In addition, the antenna is arranged in the network communication products such as the router, so that high efficiency and low gain are realized, the overall occupied space of the network communication products such as the router is reduced, and the further miniaturization design of the network communication products such as the router is facilitated. In addition, the technical scheme ensures that the antenna has a certain clearance environment in a limited environment in the form of the PCB and the radio frequency coaxial line, can effectively keep away from the interference of electronic devices, does not need to change the environment, avoids using a double-sided board, and is favorable for reducing the production cost.

In summary, the antenna provided in the embodiment of the present application utilizes the PCB as a carrier of the radiation unit, and uses the radio frequency coaxial line to electrically connect the antenna and the main board, and for the antenna, in a limited space environment inside the router housing, the assembly manner is simpler and more reliable, the occupied space is smaller, and further it can be ensured that the antenna has a certain clearance environment, so that the antenna is far away from the interference of some electronic devices inside the router, and further, because the PCB board constituting the antenna in the present application is a single panel, compared with the traditional antenna using a double panel, the antenna provided in the present application is beneficial to reducing the production cost, in addition, because the radiation unit of the antenna is in a form of a special-shaped dipole antenna, the antenna form is simple, the performance of the antenna can be improved by adjusting the branch sections of the radiation unit or avoiding the main board and some metal devices on the routing, and finally the high efficiency and low gain effects of the dual-frequency antenna are achieved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; within the context of the present application, where technical features in the above embodiments or in different embodiments may also be combined, the steps may be implemented in any order and there are many other variations of the different aspects of the present application described above which are not provided in detail for the sake of brevity; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A WiFi dual-frequency antenna is applied to a router; the method is characterized in that: the method comprises the following steps:

a PCB board;

the radiating unit is arranged on the surface of the PCB; the radiating unit forms a special-shaped dipole antenna form;

the PCB is vertically arranged on the side edge of the mainboard of the router and is connected to the connecting port of the mainboard through a radio frequency coaxial line.

2. The antenna of claim 1, wherein the thickness of the PCB board is 0.6mm, and the spacing between the PCB board and the side edge of the main board is 6mm.

3. The antenna of claim 1, wherein the radio frequency coaxial line has a wire diameter of 1.13mm; the length of the radio frequency coaxial line is 76mm.

4. The antenna of claim 1, wherein a buckle for fixing the PCB is arranged inside the housing of the router; the PCB is fixed in the router through a buckle and is vertically arranged on the side edge of the mainboard.

5. The antenna of claim 1, wherein the PCB board further comprises:

a first pad configured as an antenna feed point;

a second pad configured as a feed point.

6. The antenna of claim 5, wherein the radiating element comprises:

a first radiation section; a first branch and a second branch with preset lengths are formed on the first radiation part;

a second radiation section; a fourth branch and a fifth branch with preset lengths are formed on the second radiation part;

a third radiation section;

wherein the first and second radiating portions are spaced apart; the third radiating portion is surrounded by the second radiating portion.

7. The antenna according to claim 6, wherein the first land is provided at the first radiation portion; the second pad is disposed at the second radiation part.

8. The antenna of claim 7, wherein the first branch and the fourth branch have a predetermined length to tune the dual-band antenna to a first frequency band;

the second branch and the fifth branch have preset lengths so that the dual-frequency antenna is tuned to a second frequency band.

9. The antenna of claim 8, wherein the first frequency band is 2.4-2.5GHz; the second frequency band is 5.15-5.85GHz.

10. The antenna of claim 8, wherein the third radiating portion is coupled to the second frequency band by a flying trace.