External wireless network card with built-in antenna and antenna

Abstract

The utility model relates to the technical field of external wireless network cards, in particular to an external wireless network card with a built-in antenna and the antenna. The external wireless network card comprises a PCB (Printed Circuit Board), a built-in antenna and a shell, and the PCB and the built-in antenna are arranged in the shell; the built-in antenna comprises a signal radiation main body, a grounding pin, a radio frequency signal pin and a bent wiring section in a bent shape. The grounding pin, the radio frequency signal pin and the bent wiring section are connected with the signal radiation main body, the grounding pin is inserted into a GND (Ground) of the PCB, and the radio frequency signal pin is inserted into a radio frequency signal feed-in point of the PCB. According to the built-in antenna, the radiation area is increased through the bending wiring section, meanwhile, the space three-dimensional level of the built-in antenna can be improved, the overall structure of the built-in antenna is more three-dimensional, the signal transmitting and receiving capacity of the built-in antenna is improved, the bending wiring design does not need a larger space, and under the condition that the size is small, signals are good, the signal receiving distance is long, and the anti-interference capacity is high.

Description

Technical Field

[0001] The utility model relates to the technical field of external wireless network cards, in particular to an external wireless network card with a built-in antenna and an antenna. Background Art

[0002] A wireless network card (Wireless network interface controller) is a device that helps a computer connect to a wireless WiFi network. It is divided into two types: one is a wireless network card that is built into the device, such as a laptop, mobile phone, or other electronic device; the other is an external wireless network card, such as a USB dongle wireless network card. The external wireless network card is plugged into the USB port of the device through a USB plug.

[0003] The antenna of an external wireless network card is divided into an internal antenna and an external antenna. An external wireless network card with an external antenna has a long signal transmission distance and strong anti-interference ability, but it is large in size, occupies a large space, and has a high cost. An external wireless network card with an internal antenna has the advantages of relatively low cost, small size, easy production, and beautiful appearance. However, compared with an external wireless network card with an external antenna, an external wireless network card with an internal antenna has the problems of poor signal, short distance for transmitting or receiving signals, and poor anti-interference ability. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the utility model is to provide an external wireless network card with a built-in antenna and an antenna, so as to solve the problems in the prior art that the external wireless network card with an antenna built into a PCB has poor signal, short distance for transmitting and receiving signals, and poor anti-interference ability.

[0005] The utility model discloses an external wireless network card, comprising a PCB board, a built-in antenna and a shell, wherein the PCB board and the built-in antenna are installed in the shell; the built-in antenna comprises a signal radiation body, a ground pin, a radio frequency signal pin and a bent wiring segment in a bent shape; the ground pin, the radio frequency signal pin and the bent wiring segment are connected to the signal radiation body, the ground pin is plugged into the GND of the PCB board, and the radio frequency signal pin is plugged into the radio frequency signal feeding point of the PCB board.

[0006] Optionally, the bent routing segment includes a folding transition portion and a bending portion; one end of the folding transition portion is connected to the signal radiating body and is laterally arranged relative to the signal radiating body; the bending portion is connected to the other end of the folding transition portion and is folded toward the PCB board so that the bending portion is arranged relative to the signal radiating body.

[0007] Optionally, the bending portion includes a first bending connection sub-portion, a second bending connection sub-portion, a third bending connection sub-portion and a fourth bending connection sub-portion which are connected in sequence, and the first bending connection sub-portion is connected to the other end of the folding transition portion and is folded toward the PCB board.

[0008] Optionally, the first bending connecting sub-portion and the fourth bending connecting sub-portion are in an “L” shape, and the second bending connecting sub-portion and the third bending connecting sub-portion are in an “n” shape.

[0009] Optionally, the built-in antenna further includes a supporting portion, one end of which is connected to the signal radiation body or the bent wiring segment, and the other end of which is supported in a clearance area of ​​the PCB board.

[0010] Optionally, the ground pin is connected to one end of the signal radiating body, and the radio frequency signal pin is arranged close to the ground pin; and the supporting part is connected to the other end of the signal radiating body.

[0011] Optionally, the ground pin is connected to one end of the signal radiating body, and the RF signal pin is arranged close to the ground pin; the folding transition part is connected to the other end of the signal radiating body, and the supporting part is connected to the folding transition part.

[0012] Optionally, an external pin is provided at one end of the PCB board, and the bending portion is located at a side of the PCB board away from the external pin.

[0013] Optionally, there is a gap between the bent portion and the side of the PCB board.

[0014] Optionally, the signal radiating body, the ground pin, the radio frequency signal pin and the bending portion are arranged in a vertical state relative to the PCB board.

[0015] The utility model also provides an antenna, comprising a signal radiation body, a ground pin, a radio frequency signal pin and a bent wiring segment in a bent shape; the ground pin, the radio frequency signal pin, and the bent wiring segment are connected to the signal radiation body, the ground pin is used to be plugged into the GND of the PCB board, and the radio frequency signal pin is used to be plugged into the radio frequency signal feeding point of the PCB board;

[0016] The bent routing segment includes a folding transition portion and a bending portion, one end of the folding transition portion is connected to the signal radiating body and is arranged horizontally relative to the signal radiating body; the bending portion is connected to the other end of the folding transition portion and is folded toward the PCB board so that the bending portion and the signal radiating body are arranged relative to each other; the bending portion includes a first bending connection sub-portion, a second bending connection sub-portion, a third bending connection sub-portion and a fourth bending connection sub-portion connected in sequence, the first bending connection sub-portion is connected to the other end of the folding transition portion and is folded toward the PCB board; the first bending connection sub-portion and the fourth bending connection sub-portion are in an "L" shape, and the second bending connection sub-portion and the third bending connection sub-portion are in an "n" shape.

[0017] Compared with the prior art, the external wireless network card provided by the embodiment of the utility model has the following beneficial effects: the external wireless network card of the utility model has a built-in antenna provided with a bent wiring segment, and the bent wiring segment is connected to the signal radiation body. The bent wiring segment increases the radiation area and can improve the spatial three-dimensional level of the built-in antenna, making the overall structure of the built-in antenna more three-dimensional, improving the signal transmission and reception capabilities of the built-in antenna, and the bent wiring design does not require a larger space, ensuring that the signal is good, the receiving signal distance is long, and the anti-interference capability is strong under the condition of small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technical solution of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0019] Figure 1 It is a schematic diagram of a PCB board and a built-in antenna in an embodiment of the utility model;

[0020] Figure 2 It is a side view of the PCB board and the built-in antenna of the embodiment of the utility model;

[0021] Figure 3 yes Figure 2 A partial enlarged view of part A;

[0022] Figure 4 This is another schematic diagram of the PCB board and the built-in antenna of the embodiment of the utility model;

[0023] Figure 5 is the directional diagram of the built-in antenna in the embodiment of the utility model;

[0024] Figure 6 is the directional pattern of the ceramic antenna.

[0025] The reference numerals in the figures are:

[0026] 1. PCB board; 11. External pin; 2. Built-in antenna; 21. Signal radiating body; 22. Ground pin; 23. RF signal pin; 24. Bend routing segment; 241. Folding adapter; 242. Bend portion; 242a. First bend connecting sub-portion; 242b. Second bend connecting sub-portion; 242c. Third bend connecting sub-portion; 242d. Fourth bend connecting sub-portion; 243. Support portion; 3. Gap. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0028] The existing external wireless network cards with built-in antennas on the market, such as USB dongle wireless network cards, generally have the problem of weak signals. Especially when there is a wall blocking the way, the received signal is very weak, and users are prone to lag when surfing the Internet. At the same time, their anti-interference ability is weak. Even if there is no wall blocking the way, when there are electronic products with strong signal strength and the same working frequency band working near the wireless network card, users will experience lag or even disconnection when surfing the Internet with the wireless network card. If the above problems are to be solved, a larger space is needed, which will undoubtedly impose a relatively large restriction on the appearance of such products and make them larger.

[0029] The utility model embodiment provides an external wireless network card, such as Figures 1 to 4 As shown, the external wireless network card includes a PCB board 1, a built-in antenna 2 and a shell (not shown), and the PCB board 1 and the built-in antenna 2 are installed in the shell; the built-in antenna 2 includes a signal radiating body 21, a ground pin 22, a radio frequency signal pin 23 and a bent wiring segment 24.

[0030] The ground pin 22 , the RF signal pin 23 , and the bent wiring segment 24 are connected to the signal radiating body 21 . The ground pin 22 is plugged into the GND of the PCB board 1 , and the RF signal pin 23 is plugged into the RF signal feeding point of the PCB board 1 .

[0031] The external wireless network card of the utility model has a built-in antenna 2 provided with a bent wiring segment 24, and the bent wiring segment 24 is connected to the signal radiation body 21. The bent wiring segment 24 increases the radiation area and can improve the spatial three-dimensional level of the built-in antenna 2, making the overall structure of the built-in antenna 2 more three-dimensional, improving the signal transmission and receiving capabilities of the built-in antenna 2, and the bent wiring design does not require a larger space, ensuring that the signal is good, the receiving signal distance is long, and the anti-interference ability is strong under the condition of small size.

[0032] The signal radiating body 21 is the main part of the signal radiating. The ground pin 22 is plugged into the GND of the PCB board 1 to form a loop between the built-in antenna 2 and the ground (GND) of the PCB board 1. The distance between the ground pin 22 and the RF signal pin 23 can adjust the impedance matching of the entire built-in antenna 2. The RF signal pin 23 is the feeding point of the RF signal (Radio Frequency Signal, RF signal). The RF signal pin 23 can be connected to the microstrip line of the PCB board 1 through the welding hole of the PCB board 1. The built-in antenna 2 is a metal antenna.

[0033] Specifically, Figure 1 and Figure 4As shown, the bending routing segment 24 includes a folding adapter 241 and a bending portion 242. One end of the folding adapter 241 is connected to the signal radiating body 21 and is arranged horizontally relative to the signal radiating body 21; the bending portion 242 is connected to the other end of the folding adapter 241 and is folded toward the PCB board 1, so that the bending portion 242 is arranged opposite to the signal radiating body 21. Due to the limitation of the external wireless network card shell, the folding adapter 241 is arranged at the connection between the bending routing segment 24 and the signal radiating body 21 in this solution, so that the bending routing segment 24 is folded once at this position, and then the bending portion 242 is folded downward again toward the PCB board 1, and finally the bending portion 242 is arranged opposite to the signal radiating body 21, so that the size of the internal antenna 2 of the utility model can be suitable for a smaller space, ensuring the miniaturization of the external wireless network card.

[0034] Furthermore, if Figure 1 and Figure 4 As shown, the bending portion 242 includes a first bending connection sub-portion 242a, a second bending connection sub-portion 242b, a third bending connection sub-portion 242c and a fourth bending connection sub-portion 242d which are connected in sequence, and the first bending connection sub-portion 242a is connected to the other end of the folding adapter portion 241 and folded toward the PCB board 1. Through the arrangement of the first bending connection sub-portion 242a, the second bending connection sub-portion 242b, the third bending connection sub-portion 242c and the fourth bending connection sub-portion 242d, the bending portion 242 is arranged in a serpentine shape as a whole, ensuring that the radiation area is fully enhanced under a small volume, and the spatial three-dimensional level of the built-in antenna 2 is improved.

[0035] like Figure 4 As shown, the first bending connecting sub-portion 242a and the fourth bending connecting sub-portion 242d are in an "L" shape, and the second bending connecting sub-portion 242b and the third bending connecting sub-portion 242c are in an "n" shape. The first bending connecting sub-portion 242a and the fourth bending connecting sub-portion 242d are in an "L" shape, while the second bending connecting sub-portion 242b and the third bending connecting sub-portion 242c are in an "n" shape. This design makes the overall structure more complex and three-dimensional, can better adapt to limited space, and improves the performance of the built-in antenna 2.

[0036] like Figure 1As shown, the built-in antenna 2 also includes a support portion 243, one end of the support portion 243 is connected to the signal radiating body 21 or the bent wiring segment 24, and the other end is supported in the clearance area of ​​the PCB board 1. By setting the support portion 243, a support point can be provided for the built-in antenna 2, thereby improving the installation firmness of the built-in antenna 2 and preventing deformation. The support portion 243 is supported in the clearance area of ​​the PCB board 1, which is convenient for setting the support portion 243 and avoiding the support portion 243 from affecting the components of the PCB board 1. The support portion 243 is supported in the clearance area of ​​the PCB board 1 by either welding one end of the support portion 243 to the clearance area of ​​the PCB board 1, or by not welding and only supporting or plugging in the clearance area of ​​the PCB board 1.

[0037] Specifically, in one embodiment, the ground pin 22 is connected to one end of the signal radiating body 21, and the RF signal pin 23 is arranged near the ground pin 22; the support portion 243 is connected to the other end of the signal radiating body 21. The RF signal pin 23 is arranged near the ground pin 22, which helps to reduce the transmission path of the signal and reduce the crosstalk and loss of the signal transmission. This arrangement can improve the performance and receiving sensitivity of the built-in antenna 2, while reducing the risk of interference during signal transmission. The support portion 243 is connected to the other end of the signal radiating body 21 to provide support and stability, which can ensure the stability of the structure of the built-in antenna 2, prevent deformation or damage due to external influences, and enhance the reliability of the entire external wireless network card. In another embodiment, the ground pin 22 is connected to one end of the signal radiating body 21, and the RF signal pin 23 is arranged near the ground pin 22; the folding adapter 241 is connected to the other end of the signal radiating body 21, and the support portion 243 is connected to the folding adapter 241. In this embodiment, the support portion 243 is connected to the folded transition portion 241 to provide a more balanced support force for the signal radiation body 21 and the bent portion 242 at the same time.

[0038] An external pin 11 is provided at one end of the PCB board 1, and the bend 242 is located on the side of the PCB board 1 away from the external pin 11. The bend 242 is located on the side of the PCB board 1 away from the external pin 11, which is convenient for introducing more bends in the antenna signal transmission path, thereby achieving adjustment or optimization of the antenna signal. Placing the bend 242 on the side away from the external pin 11 can avoid the interference of the external pin 11 on the signal transmission path, and optimize the effect of signal transmission. The external pin 11 is connected to the USB port on the inserted device as a connection contact of the USB plug.

[0039] Specifically, Figure 2 and Figure 3As shown, there is a gap 3 between the bending portion 242 and the side of the PCB board 1. The gap 3 between the bending portion 242 and the side of the PCB board 1 can ensure that there is a certain space between the bending portion 242 and the PCB board 1 to avoid direct contact, and can reduce possible interference during the transmission of electromagnetic signals. If the bending portion 242 directly contacts the PCB board 1, it will cause signal interference or adverse effects, affecting the transmission quality of the antenna signal. The gap 3 between the bending portion 242 and the side of the PCB board 1 can also allow the bending portion 242 to have a deformation buffer space, reduce the possibility of structural damage caused by external vibration or impact, and avoid damage to the bending portion 242 or the entire built-in antenna 2 due to disassembly and assembly errors during the disassembly and assembly process.

[0040] like Figure 1 and Figure 4 As shown, the signal radiating body 21, the ground pin 22, the RF signal pin 23 and the bending portion 242 are arranged in a vertical state relative to the PCB board 1. The vertical arrangement helps to optimize the propagation direction and power distribution of the signal, and improves the performance of the antenna. At the same time, it helps the overall installation of the built-in antenna 2, improves the reasonable layout of the built-in antenna 2, and facilitates the enhancement of the spatial three-dimensionality of the built-in antenna 2.

[0041] In summary, compared with other antennas, the built-in antenna 2 of the utility model can obtain a larger bandwidth under the same environment, thereby improving the anti-interference ability of the product. Taking the ceramic antenna as a comparison, the return loss of the built-in antenna 2 of the utility model and the return loss of the ceramic antenna are shown in Table 1 below. The antenna bandwidth is determined by -10dB as the limit. The bandwidth of the built-in antenna 2 of the utility model is 380MHz, and the bandwidth of the built-in antenna 2 of the utility model is 133MHz. When the product contacts the human body, metal objects, or is subject to electromagnetic interference of the same frequency, the center frequency (such as 2441MHz for the built-in antenna 2 of the utility model) will be offset. If the bandwidth of the antenna is insufficient, some electrical characteristics of the antenna will decrease. Specifically, the user feels stuck and disconnected when using it. When the user moves the product away from the interference source, the product returns to normal. The built-in antenna 2 of the utility model can obtain a larger bandwidth, which can avoid such situations from occurring frequently, greatly improve the anti-interference ability of the product, and enable users to obtain a better user experience.

[0042] Table 1

[0043]

[0044] The built-in antenna 2 of the utility model has a more three-dimensional structure, and the antenna obtains a larger clearance area in a limited space and has a larger radiation area, so the built-in antenna 2 of the utility model has a greater signal strength and a better directional pattern. Figure 5 The directional diagram of the built-in antenna 2 of the utility model, Figure 6As shown in the directional diagram of the ceramic antenna, in the 90° direction, the signal strength of the built-in antenna 2 of the utility model is -5dBm, and the signal strength of the ceramic antenna is -10dBm; in the 270° direction, the signal strength of the built-in antenna 2 of the utility model is -0.5dBm, and the signal strength of the ceramic antenna is -5.5dBm. The signal strength of this embodiment is improved by 5dB. The improvement in signal strength is reflected in the outdoor pull-away test of the built-in antenna 2 of the utility model. Improvement of at least 5 meters.

[0045] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present utility model.

Claims

1. An external wireless network card with a built-in antenna, characterized in that: It includes a PCB board, a built-in antenna and a shell, wherein the PCB board and the built-in antenna are installed in the shell; the built-in antenna includes a signal radiation body, a ground pin, a radio frequency signal pin and a bent wiring segment in a bent shape; The ground pin, the RF signal pin, and the bent wiring segment are connected to the signal radiating body, the ground pin is plugged into the GND of the PCB board, and the RF signal pin is plugged into the RF signal feeding point of the PCB board.

2. The external wireless network card according to claim 1, characterized in that: The bent routing section includes a folding transition portion and a bending portion; One end of the folding transition portion is connected to the signal radiating body and is arranged horizontally relative to the signal radiating body; the bending portion is connected to the other end of the folding transition portion and is folded toward the PCB board so that the bending portion is arranged opposite to the signal radiating body.

3. The external wireless network card according to claim 2, characterized in that: The bending portion includes a first bending connection sub-portion, a second bending connection sub-portion, a third bending connection sub-portion and a fourth bending connection sub-portion which are connected in sequence. The first bending connection sub-portion is connected to the other end of the folding transition portion and is folded toward the PCB board.

4. The external wireless network card according to claim 3, characterized in that: The first bending connecting sub-portion and the fourth bending connecting sub-portion are in an "L" shape, and the second bending connecting sub-portion and the third bending connecting sub-portion are in an "n" shape.

5. The external wireless network card according to any one of claims 2 to 4, characterized in that: The built-in antenna also includes a supporting portion, one end of which is connected to the signal radiating body or the bent wiring segment, and the other end of which is supported in the clearance area of ​​the PCB board.

6. The external wireless network card according to claim 5, characterized in that: The ground pin is connected to one end of the signal radiating body, and the radio frequency signal pin is arranged close to the ground pin; the supporting part is connected to the other end of the signal radiating body.

7. The external wireless network card according to claim 5, characterized in that: The ground pin is connected to one end of the signal radiating body, and the radio frequency signal pin is arranged close to the ground pin; the folding transition portion is connected to the other end of the signal radiating body, and the supporting portion is connected to the folding transition portion.

8. The external wireless network card according to any one of claims 2 to 4, characterized in that: One end of the PCB is provided with an external pin, and the bending portion is located at a side of the PCB away from the external pin.

9. The external wireless network card according to claim 8, characterized in that: There is a gap between the bending portion and the side edge of the PCB board.

10. The external wireless network card according to claim 2, characterized in that: The signal radiating body, the ground pin, the radio frequency signal pin and the bending portion are arranged in a vertical state relative to the PCB board.

11. An antenna, characterized in that: It includes a signal radiating body, a ground pin, a radio frequency signal pin and a bent wiring segment in a bent shape; the ground pin, the radio frequency signal pin, and the bent wiring segment are connected to the signal radiating body, the ground pin is used to be plugged into the GND of the PCB board, and the radio frequency signal pin is used to be plugged into the radio frequency signal feeding point of the PCB board; The bent routing segment includes a folding transition portion and a bending portion, one end of the folding transition portion is connected to the signal radiating body and is laterally arranged relative to the signal radiating body; the bending portion is connected to the other end of the folding transition portion and is folded toward the PCB board so that the bending portion is arranged relative to the signal radiating body; the bending portion includes a first bending connecting sub-portion, a second bending connecting sub-portion, a third bending connecting sub-portion and a fourth bending connecting sub-portion connected in sequence, the first bending connecting sub-portion is connected to the other end of the folding transition portion and is folded toward the PCB board; the first bending connecting sub-portion and the fourth bending connecting sub-portion are in an "L" shape, and the second bending connecting sub-portion and the third bending connecting sub-portion are in an "n" shape.

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