Metal windowing coupled PCB WIFI antenna

Abstract

The utility model relates to a metal windowing coupled PCB WIFI antenna, which comprises a metal bottom shell, a window is arranged at the frame of the metal bottom shell, a PCB antenna is arranged at the window, an antenna grounding point of the PCB antenna is communicated with the metal bottom shell, and an antenna feeding point of the PCB antenna is led out through a coaxial cable and then is connected to a corresponding mainboard. According to the utility model, the metal bottom shell is provided with the specific window, and the plastic / glue is used for filling in the later stage, thereby ensuring that the strength of the whole machine reaches the standard, enabling the signal transmission performance to meet the standard, achieving higher antenna efficiency, and achieving the optimal balance between the strength and the signal transmission. The problem that cost, strength and signal transmission are difficult to take into account in the prior art is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication technology field, concretely relates to a kind of PCB WIFI antenna of metal windowing coupling. BACKGROUND

[0002] With the continuous development of electronic products to light and thin, the demand of signal transmission is increasingly prominent. The current common solution is to use plastic shell or place the antenna on the metal frame. Although plastic shell can reduce cost, it is difficult to meet the requirements of strength and texture of the whole machine; although metal frame can ensure strength, its high cost also becomes a constraint factor. SUMMARY

[0003] The utility model aims at overcoming the problems in the prior art, providing a kind of PCB WIFI antenna of metal windowing coupling, the advantages of plastic shell and metal frame are fused, by adopting metal frame and setting specific slot, filling with plastic in later period, while ensuring that the strength of the whole machine meets the standard, also make signal transmission performance meet the standard, realize the optimized balance of strength and signal transmission, effectively solve the problem that cost, strength and signal transmission are difficult to consider in the prior art.

[0004] To achieve the above technical purpose, achieve the above technical effect, the utility model realizes by the following technical scheme:

[0005] A kind of PCB WIFI antenna of metal windowing coupling, including metal bottom shell, the window is opened at the frame of the metal bottom shell, the PCB antenna is equipped at the window, the antenna grounding point of the PCB antenna is communicated with the metal bottom shell, and the antenna feed point of PCB antenna is led out by coaxial cable.

[0006] Further, a plurality of screw seats are provided in the window, screw holes corresponding to the screw seats are provided on the PCB antenna, and the PCB antenna is locked on the screw seats by screw holes and corresponding fixing screws.

[0007] Further, the screw seat and the metal bottom shell are in an integrated conductive structure.

[0008] Further, the antenna grounding point of the PCB antenna is electrically connected to the screw seat by fixing screw.

[0009] Further, the PCB antenna includes a PCB substrate, the front and back surfaces of the PCB substrate are provided with copper-clad areas to form a first antenna radiation part, a second antenna radiation part and a third antenna radiation part, the first antenna radiation part and the second antenna radiation part are coupled and arranged on the front surface of the PCB substrate, and the third antenna radiation part is arranged on the back surface of the PCB substrate and connected in conduction with the first antenna radiation part.

[0010] Further, the antenna feed point is arranged on the first antenna radiation part, and the antenna ground point is arranged on the second antenna radiation part.

[0011] Further, one of the screw holes is located on the second antenna radiation part, so that the antenna ground point is in conduction with the screw hole through the second antenna radiation part.

[0012] Further, the material of the PCB substrate is epoxy glass fiber plate FR4.

[0013] The utility model discloses the beneficial effect is:

[0014] The utility model discloses the specific window is set up in metal bottom shell, fills in the later period use plastic / glue, guarantees the whole machine strength standard at the same time, also makes signal transmission performance meet the standard, reaches higher antenna efficiency, realizes the optimized balance of strength and signal transmission, effectively solve the problem that cost, strength and signal transmission are difficult to give consideration to in prior art. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is split structure schematic diagram of the utility model;

[0016] Figure 2 It is assembly structure schematic diagram of the utility model;

[0017] Figure 3 It is PCB antenna front structure schematic diagram of the utility model;

[0018] Figure 4 It is PCB antenna back structure schematic diagram of the utility model;

[0019] Figure 5 It is antenna efficiency comparison chart of the utility model antenna and all metal bottom shell.

[0020] Mark number explanation in drawing: 1, metal bottom shell, 11, window, 12, screw seat, 2, PCB antenna, 21, first antenna radiation part, 211, antenna feed point, 22, second antenna radiation part, 221, antenna ground point, 23, third antenna radiation part, 24, PCB substrate, 25, screw hole, 3, coaxial cable, 4, fixed screw, 5, VIA hole. DETAILED DESCRIPTION

[0021] The utility model will be described in detail below in combination with the embodiment and reference to the drawings.

[0022] As Figure 1 And Figure 2As shown in the figure, a metal windowed coupled PCB WIFI antenna comprises a metal bottom shell 1, a window 11 is opened at the frame of the metal bottom shell 1, a PCB antenna 2 is arranged at the window 11, in order to facilitate installation, in the embodiment, a protruding part can be arranged at the periphery of the window 11, facilitating the PCB antenna 2 to sink from the protruding part to the window 11 for installation, the antenna grounding point 221 of the PCB antenna 2 is connected with the metal bottom shell 1, the antenna feed point 211 of the PCB antenna 2 is led out through a coaxial cable 3, the protruding part at the periphery of the window 11 is provided with a corresponding wire slot, facilitating the coaxial cable 3 to pass through and be led out, and then connected to a corresponding mainboard.

[0023] As shown in the figure, Figure 3 and Figure 4 As shown in the figure, a plurality of screw seats 12 are arranged in the window 11, a screw hole 25 corresponding to the screw seat 12 is arranged on the PCB antenna 2, and the PCB antenna 2 is locked on the screw seat 12 through the screw hole 25 and a corresponding fixing screw 4.

[0024] The screw seat 12 and the metal bottom shell 1 are in an integrated and conductive structure.

[0025] The antenna grounding point of the PCB antenna 2 is electrically connected to the screw seat 12 through the fixing screw 4, so that the antenna standing wave is more stable.

[0026] As shown in the figure, Figure 3 As shown in the figure, the PCB antenna 2 comprises a PCB substrate 24, the front surface and the back surface of the PCB substrate 24 are provided with copper-clad areas to form a first antenna radiation part 21, a second antenna radiation part 22 and a third antenna radiation part 23, the first antenna radiation part 21 and the second antenna radiation part 22 are coupled and arranged on the front surface of the PCB substrate 24, and Figure 4 As shown in the figure, the third antenna radiation part 23 is arranged on the back surface of the PCB substrate 24 and connected in conduction with the first antenna radiation part 21, and a VIA hole 5 can be used for conduction, and the branch of the third antenna radiation part 23 can strengthen the antenna standing wave and control the 2.4GHz frequency point.

[0027] The antenna feed point 211 is arranged on the first antenna radiation part 21, and the antenna grounding point 221 is arranged on the second antenna radiation part 22.

[0028] One of the screw holes 25 is located on the second antenna radiation part 22, so that the antenna grounding point 221 is in conduction with the screw hole 25 through the second antenna radiation part 22.

[0029] The material of the PCB substrate 24 is epoxy glass fiber plate FR4, and in the embodiment, the length, width and thickness of the PCB substrate 24 are 50.5*4.7*0.8mm, and the minimum length and width of the window 11 of the metal bottom shell 1 are 3.8*37mm, and if the size is smaller, the WIFI 2.4GHz frequency band will be affected, and after all the components are assembled in place, the window 11 is filled with plastic / gel, and the installation of the entire antenna is completed.

[0030] As shown in Figure 5 The efficiency comparison chart of the metal windowed plastic filling structure and the all-metal bottom shell of the embodiment, from the data and efficiency curve in the chart, it can be seen that the antenna efficiency of the same antenna after the window 11 is set on the metal bottom shell 1 can be improved by about 3~4dB compared with the all-metal rear shell in the 2.4GHz frequency band, which has higher efficiency and can meet the needs of customers.

[0031] In addition, it should be noted that, unless otherwise specified or indicated, the terms "first", "second", "third" and the like in the specification are merely used to distinguish the components, elements, steps and the like in the specification, and are not used to represent the logical relationship or sequence relationship between the components, elements, steps and the like.

[0032] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A PCB WIFI antenna of metal windowing coupling, comprising a metal bottom shell (1), characterized in that, The metal bottom shell (1) is provided with a window (11) at the frame, and the window (11) is provided with a PCB antenna (2), the antenna grounding point (221) of the PCB antenna (2) is connected with the metal bottom shell (1), and the antenna feeding point (211) of the PCB antenna (2) is led out through a coaxial cable (3).

2. The metal window-coupled PCB WIFI antenna according to claim 1, wherein, The window (11) is provided with a plurality of screw seats (12), the PCB antenna (2) is provided with screw holes (25) corresponding to the screw seats (12), and the PCB antenna (2) is locked on the screw seats (12) through the screw holes (25) and corresponding fixing screws (4).

3. The metal window etched coupled PCB WIFI antenna according to claim 2, wherein, The screw seat (12) and the metal bottom shell (1) are in an integrated conductive structure.

4. The PCB WIFI antenna with metal windowed coupling of claim 3, wherein, The antenna grounding point of the PCB antenna (2) is electrically connected to the screw seat (12) through the fixing screw (4).

5. The metal window etched coupled PCB WIFI antenna according to claim 4, wherein, The PCB antenna (2) comprises a PCB substrate (24), the front surface and the back surface of the PCB substrate (24) are provided with copper-clad areas to form a first antenna radiation part (21), a second antenna radiation part (22) and a third antenna radiation part (23), the first antenna radiation part (21) and the second antenna radiation part (22) are coupled and arranged on the front surface of the PCB substrate (24), and the third antenna radiation part (23) is arranged on the back surface of the PCB substrate (24) and is connected in conduction with the first antenna radiation part (21).

6. The metal window etched coupled PCB WIFI antenna according to claim 5, wherein, The antenna feeding point (211) is arranged on the first antenna radiation part (21), and the antenna grounding point (221) is arranged on the second antenna radiation part (22).

7. The metal window etched coupled PCB WIFI antenna according to claim 6, wherein, One of the screw holes (25) is located on the second antenna radiation part (22), so that the antenna grounding point (221) is in conduction with the screw hole (25) through the second antenna radiation part (22).

8. The metal window etched coupled PCB WIFI antenna according to claim 5, wherein, The material of the PCB substrate (24) is an epoxy glass fiber plate FR4.

Images