Wireless communication device

Abstract

The utility model discloses wireless communication equipment, and relates to the technical field of wireless communication. The wireless communication equipment comprises a circuit board, the circuit board is provided with a first surface and a second surface which are oppositely arranged, the first surface is provided with a metal layer, and the circuit board is provided with a feed network; the at least two antennas are arranged on the second surface at intervals, each antenna comprises a support part and a radiation part which are connected, the support part is connected with the circuit board, the radiation part is bent relative to the support part, the support part is provided with a feed port and a grounding port, and the feed port is connected with the grounding port. The feed port is electrically connected with the feed network, and the grounding port is electrically connected with the metal layer. According to the scheme, the problem that the thickness of the current wireless communication equipment is relatively large can be solved.

Description

Technical Field

[0001] The present application belongs to the field of wireless communication technology, and specifically relates to a wireless communication device. Background Art

[0002] Wireless communication equipment includes wireless AP (Wireless Access Point), AC (Wireless Access Point Controller) and other devices. Wireless APs mainly include ceiling-mounted and wall-mounted types. Ceiling-mounted wireless APs are generally installed on the ceiling, such as in enterprises, hotels, shopping malls and other places to create a good environment; wall-mounted wireless APs are mainly used to replace routers placed on the desktop in the room, and are used to achieve wireless coverage in places such as hotels, dormitories, offices and other places that have special requirements for network maintenance and aesthetic installation.

[0003] In practical applications, the antenna of a wall-mounted wireless AP is mainly implemented through PCB mounting or FPC with feeder, but in the above method, the metal back shell of the wireless AP needs to be spaced apart from the antenna to reserve a larger clearance area. At this time, the antenna needs to occupy a larger space, which makes the entire device thicker. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a wireless communication device that can solve the problem of large thickness of current wireless communication devices.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] An embodiment of the present application provides a wireless communication device, including:

[0007] A circuit board, the circuit board having a first surface and a second surface disposed opposite to each other, the first surface being provided with a metal layer, and the circuit board having a feeding network;

[0008] At least two antennas, each of which is arranged on the second surface at intervals, each of which includes a supporting portion and a radiating portion that are connected, the supporting portion is connected to the circuit board, the radiating portion is bent relative to the supporting portion, the supporting portion is provided with a feeding port and a grounding port, the feeding port is electrically connected to the feeding network, and the grounding port is electrically connected to the metal layer.

[0009] In an embodiment of the present application, a metal layer is laid on the first surface of the circuit board, and at least two antennas are provided on the second surface of the circuit board, each antenna includes a supporting portion and a radiating portion connected to each other, the radiating portion is bent relative to the supporting portion to form an inverted F-shaped antenna, and its height is relatively small, so that the thickness of the entire wireless communication device is relatively small; the supporting portion is connected to the circuit board, and the supporting portion is provided with a feeding port and a grounding port, the feeding port is electrically connected to the feeding network of the circuit board, and the grounding port is electrically connected to the metal layer. At this time, the distance between the radiating portion and the metal layer is relatively close, and its capacitance is relatively large, and the grounding port is equivalent to connecting an inductor in parallel to the antenna, and the inductor and the capacitance of the radiating portion together realize good resonance of the antenna, so that the antenna has better radiation performance, and at the same time, metal clearance is performed in the area where the antenna is located on the second surface to improve the radiation performance of each antenna, and there is no need to reserve a clearance area on the side where the metal layer of the circuit board is located, thereby reducing the space occupied by the antenna, and further reducing the thickness of the wireless communication device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A side view of a wireless communication device disclosed in an embodiment of the present application;

[0011] Figure 2 A schematic diagram of the structure of a circuit board and an antenna disclosed in an embodiment of the present application;

[0012] Figure 3 A schematic diagram of the structure of the first antenna disclosed in an embodiment of the present application;

[0013] Figure 4 A schematic diagram of the structure of a second antenna disclosed in an embodiment of the present application;

[0014] Figure 5 This is a schematic diagram of the structure of another second antenna disclosed in an embodiment of the present application.

[0015] Description of reference numerals:

[0016] 100 - circuit board, 110 - first side, 120 - second side;

[0017] 200-antenna, 200'-first antenna, 200"-second antenna, 210-supporting portion, 211-feeding port, 212-grounding port, 213-first supporting foot, 214-second supporting foot, 215-supporting plate, 216-first supporting plate segment, 217-second supporting plate segment, 220-radiating portion, 221-first radiating plate segment, 222-second radiating plate segment, 223-first radiating branch, 224-second radiating branch, 225-opening, 230-third supporting foot;

[0018] 310-front shell, 320-rear shell. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0021] The wireless communication device provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0022] like Figures 1 to 5 As shown, an embodiment of the present application discloses a wireless communication device. Optionally, the wireless communication device may be a wireless AP, a wireless router, etc., and the embodiment of the present application does not impose any specific restrictions on this. Further, optionally, the wireless communication device may specifically be a wall-mounted wireless AP.

[0023] The wireless communication device includes a circuit board 100 and at least two antennas 200. The circuit board 100 has a first surface 110 and a second surface 120 disposed opposite to each other. The first surface 110 is provided with a metal layer, which is a zero-potential structure and serves as a grounding body. The circuit board 100 has a feeding network for feeding each antenna 200.

[0024] Each antenna 200 is arranged at intervals on the second surface 120 of the circuit board 100. Optionally, each antenna 200 can be arranged at the same edge of the circuit board 100, or at different edges of the circuit board 100. The embodiment of the present application does not impose specific restrictions on this. Each antenna 200 includes a connected support portion 210 and a radiating portion 220. The support portion 210 is connected to the circuit board 100, and the radiating portion 220 is bent relative to the support portion 210, that is, the radiating portion 220 is arranged relative to the circuit board 100. The support portion 210 is provided with a feeding port 211 and a grounding port 212. The feeding port 211 is electrically connected to the feeding network, and the grounding port 212 is electrically connected to the metal layer. Optionally, the antenna 200 can be formed by bending sheet metal, and of course it can also be made of other metal structures. The embodiment of the present application does not impose specific restrictions on this.

[0025] In the embodiment of the present application, a metal layer is laid on the first surface 110 of the circuit board 100, and at least two antennas 200 are provided on the second surface 120 of the circuit board 100. Each antenna 200 includes a supporting portion 210 and a radiating portion 220 connected to each other. The radiating portion 220 is bent relative to the supporting portion 210 to form an inverted F-shaped antenna, which has a small height, so that the thickness of the entire wireless communication device is small; the supporting portion 210 is connected to the circuit board 100, and the supporting portion 210 is provided with a feeding port 211 and a grounding port 212. The feeding port 211 is electrically connected to the feeding network of the circuit board 100, and the grounding port 212 is electrically connected to the metal The metal layer is electrically connected, and the distance between the radiating portion 220 and the metal layer is relatively close, and its capacitance is relatively large, and the ground port 212 is equivalent to connecting an inductor in parallel to the antenna 200, and the inductor and the capacitance of the radiating portion 220 together realize good resonance of the antenna 200, so that the antenna 200 has good radiation performance, and at the same time, the metal clearance is performed in the area where the antenna 200 is located on the second surface 120 to improve the radiation performance of each antenna 200, and the side where the metal layer of the circuit board 100 is located does not need to reserve a clearance area, thereby reducing the space occupied by the antenna 200, and further reducing the thickness of the wireless communication device. Therefore, the embodiment of the present application can solve the problem of large thickness of the current wireless communication device.

[0026] Optionally, the wireless communication device further includes a detachably connected front shell 310 and a rear shell 320, the front shell 310 and the rear shell 320 can enclose a receiving cavity, the circuit board 100 and each antenna 200 are arranged in the receiving cavity, the front shell 310 and the rear shell 320 are used to protect the structure in the receiving cavity, and at the same time improve the aesthetics of the wireless communication device. The metal layer faces the rear shell 320, and the rear shell 320 can be arranged close to the metal layer. Optionally, the rear shell 320 can be a metal structure to improve the structural strength of the wireless communication device. Each antenna 200 faces the front shell 310, and the front shell 310 can be a non-metallic structure (such as a plastic structure) to ensure that the electromagnetic waves radiated by each antenna 200 pass through the front shell 310 and radiate outside the wireless communication device.

[0027] In an optional embodiment, the support portion 210 includes a first support leg 213 and a second support leg 214 that are spaced apart, the first end of the first support leg 213 and the first end of the second support leg 214 are both connected to the radiating portion 220, the second end of the first support leg 213 is provided with a feeding port 211, the second end of the second support leg 214 is provided with a grounding port 212, and there is a gap between the first support leg 213 and the second support leg 214 to form an impedance adjustment portion. In this solution, in the process of manufacturing a wireless communication device, the impedance matching performance of the antenna 200 is adjusted by adjusting the size of the gap between the first support leg 213 and the second support leg 214, thereby improving the radiation performance of the antenna 200. Of course, a resonator or other structure can also be added to the feeding network to adjust the impedance matching performance of the antenna 200; or, in the process of manufacturing the antenna 200, the size of the radiating portion 220 can be adjusted to perform impedance tuning, thereby improving the impedance matching performance of the antenna 200.

[0028] Optionally, in order to improve the setting stability of the antenna 200, the first supporting foot 213 and the second supporting foot 214 can be support columns; or, in an optional embodiment, the supporting portion 210 also includes a supporting plate 215, and one of the first supporting foot 213 and the second supporting foot 214 is connected to the supporting plate 215, and the supporting plate 215 is supported on the second surface 120. At this time, the first supporting foot 213 and the second supporting foot 214 can be set to a plate-like structure, etc., to reduce the weight of the antenna 200, and at the same time can greatly increase the contact area between the supporting portion 210 and the circuit board 100, thereby improving the stability of the antenna 200.

[0029] Optionally, the support plate 215 is disposed in contact with the second surface 120 of the circuit board 100 to further enhance the stability of the antenna 200 .

[0030] In another optional embodiment, the support portion 210 includes a first support plate segment 216 and a second support plate segment 217 connected to each other, the first support plate segment 216 is connected to the radiation portion 220, and the second support plate segment 217 is bent relative to the first support plate segment 216, that is, the support portion 210 is in an L-shaped structure, the second support plate segment 217 is connected to the circuit board 100, and the second support plate segment 217 is arranged in abutment with the second surface 120, and the second support plate segment 217 is provided with a feeding port 211 and a grounding port 212. In this solution, an L-shaped support portion 210 is adopted to increase the connection area between the support portion 210 and the circuit board 100, thereby improving the connection firmness and stability of the antenna 200; and when the connection area between the support portion 210 and the circuit board 100 is large, the arrangement of the feeding port 211 and the grounding port 212 is more flexible, so that the two can be electrically connected to the feeding network and the metal layer respectively. Of course, the support portion 210 may also only include the first support plate segment 216 , in which case the feeding port 211 and the grounding port 212 are both disposed on the end surface of the first support plate segment 216 facing the circuit board 100 .

[0031] Optionally, in an embodiment where the support portion 210 also includes a support plate 215, the support portion 210 also includes a first support plate segment 216 and a second support plate segment 217 that are connected, and the support plate 215 is connected to the second support plate segment 217 to further increase the contact area between the support portion 210 and the circuit board 100, thereby improving the support stability of the support portion 210.

[0032] Optionally, the second support plate segment 217 is connected between the support plate 215 and the first support plate segment 216, and the support plate 215 can be used as an extension of the second support plate segment 217, that is, in the length direction of the second support plate segment 217, the width and thickness of the support plate 215 are the same as those of the second support plate segment 217, so as to facilitate the processing and manufacturing of the support portion 210. Of course, the width of the support plate 215 can also be greater than the width of the second support plate segment 217.

[0033] In another optional embodiment, the radiation portion 220 includes a first radiation plate segment 221 and a second radiation plate segment 222 connected to each other, the second radiation plate segment 222 is bent relative to the first radiation plate segment 221, that is, the radiation portion 220 is L-shaped, the first radiation plate segment 221 is connected to the support portion 210, one of the first radiation plate segment 221 and the second radiation plate segment 222 is parallel to the second surface 120 of the circuit board 100, and the other is bent toward the second surface 120 of the circuit board 100, that is, one of the first radiation plate segment 221 and the second radiation plate segment 222 is parallel to the second surface 120 of the circuit board 100, and the other is parallel to the vertical plane and is located between the radiation plate segment parallel to the second surface 120 and the circuit board 100. In this solution, the radiation area of ​​the radiation portion 220 is increased without increasing the height of the antenna 200, thereby increasing the coverage area of ​​the electromagnetic wave. Of course, the radiation portion 220 can also be a flat plate structure or a U-shaped structure, etc., which is not specifically limited here.

[0034] Optionally, the first radiation plate segment 221 can be parallel to the second surface 120 of the circuit board 100, in which case the second radiation plate segment 222 is bent relative to the first radiation plate segment 221 toward the side where the circuit board 100 is located; or, the second radiation plate segment 222 can be parallel to the second surface 120 of the circuit board 100, and the first radiation plate segment 221 is bent relative to the second radiation plate segment 222 toward the side where the circuit board 100 is located, in which case the first radiation plate segment 221 and at least a portion of the support portion 210 can be in the same vertical plane.

[0035] Optionally, the radiation portion 220 may be provided with an opening 225 to extend the current path inside the radiation portion 220 , thereby reducing the size of the radiation portion 220 .

[0036] Optionally, the first radiation plate segment 221 and the second radiation plate segment 222 can both be irregularly shaped structures to extend the circumference of the first radiation plate segment 221 and the circumference of the second radiation plate segment 222, thereby further extending the current path inside the radiation portion 220 and reducing the size of the radiation portion 220.

[0037] Optionally, each antenna 200 may be a single-frequency antenna; or, in another optional embodiment, at least two antennas 200 include a first antenna 200' and a second antenna 200", and the first antenna 200' is a single-frequency antenna. Optionally, the first antenna 200' may be a 2.4G antenna or a 5G antenna, which may be selected according to actual needs, and the embodiment of the present application does not impose specific restrictions on this. The second antenna 200" is a dual-frequency antenna, that is, the second antenna 200" is a composite antenna, thereby reducing the number of antennas 200, facilitating the assembly of wireless communication equipment, and reducing the space occupied by the antenna 200. Of course, each antenna 200 may also be a dual-frequency antenna.

[0038] In a further optional embodiment, the radiation portion 220 of the second antenna 200" includes a first radiation branch 223 and a second radiation branch 224 that are connected, one of the first radiation branch 223 and the second radiation branch 224 is a 2.4G radiation branch, and the other is a 5G radiation branch, that is, different radiation branches are used to radiate electromagnetic waves of different frequencies. The first radiation branch 223 and the second radiation branch 224 are both connected to the support portion 210 of the second antenna 200", that is, the first radiation branch 223 and the second radiation branch 224 share a feeding port 211 and a grounding port 212 to simplify the structure of the second antenna 200"; and, the first radiation branch 223 and the second radiation branch 224 are respectively located on different sides of the support portion 210, which can reduce the interference between electromagnetic waves of different frequencies radiated by the first radiation branch 223 and the second radiation branch 224. Of course, the first radiation branch 223 and the second radiation branch 224 can also be fed by different feeding ports 211.

[0039] Optionally, the first radiation branch 223 and the second radiation branch 224 both include the connected first radiation plate segment 221 and the second radiation plate segment 222 described above, so as to increase the radiation area of ​​the radiation branches of different frequencies and improve the radiation performance thereof.

[0040] Optionally, the number of the second antennas 200 ″ may be at least two, and the structures of the second antennas 200 ″ may be the same or different, which is not specifically limited in the embodiment of the present application.

[0041] Further optionally, when the structures of each second antenna 200" are different, the first radiating branches 223 and the second radiating branches 224 of part of the second antenna 200" can extend respectively along the opposite sides of the support part 210, and at this time, the support part 210 of the second antenna 200" is located between the first radiating branches 223 and the second radiating branches 224; the first radiating branches 223 and the second radiating branches 224 of another part of the second antenna 200" can be arranged relative to each other, and the extension directions of the two are parallel. At this time, at least part of the support part 210 of the second antenna 200" is connected between the first radiating branches 223 and the second radiating branches 224. The second antenna 200" can be specifically arranged according to actual needs, and the embodiment of the present application does not impose specific restrictions on this.

[0042] Optionally, the first radiation branch 223 is a 5G radiation branch, the second radiation branch 224 is a 2.4G radiation branch, the feeding port 211 of the second antenna 200" is arranged adjacent to the first radiation branch 223, and the grounding port 212 of the second antenna 200" is arranged adjacent to the second radiation branch 224. In this case, the radiation performance of the first radiation branch 223 and the second radiation branch 224 is better. Of course, the feeding port 211 of the second antenna 200" can also be arranged adjacent to the second radiation branch 224. In this case, the grounding port 212 of the second antenna 200" is arranged adjacent to the first radiation branch 223.

[0043] Optionally, the support portion 210 and the circuit board 100 can be detachably connected by fasteners such as screws; or, the support portion 210 and the circuit board 100 are welded to improve the stability of the antenna 200; further optionally, the support portion 210 is welded to the circuit board 100 by reflow soldering. Since the thermal shock of reflow soldering is small, it is easy to control the release amount of solder paste to avoid floating, thereby reducing the height of the antenna 200, and the surface tension of the molten solder can correct the placement of the support portion 210. Of course, the support portion 210 can also be welded to the circuit board 100 by wave soldering.

[0044] In an optional embodiment, at least one antenna 200 further includes a third support leg 230, one end of the third support leg 230 is connected to the radiating portion 220, and the other end of the third support leg 230 is supported on the circuit board 100. Optionally, the third support leg 230 can be a support plate, which is placed vertically to support on the second surface 120 of the circuit board 100. The third support leg 230 and the support portion 210 are respectively located on two opposite sides of the radiating portion 220, that is, the first support leg 213, the second support leg 214 and the third support leg 230 form a three-point support, thereby further improving the stability of the antenna 200. It should be noted that the third support leg 230 is not electrically conductive with the feed network and the metal layer, and only supports on the second surface 120 of the circuit board 100.

[0045] Optionally, the thickness of the circuit board 100 can be 1 mm or approximately 1 mm, and the height of the antenna 200 can be 4 mm or approximately 4 mm. Including the assembly tolerance gap, the total height of the circuit board 100 and the antenna 200 can be less than or equal to 5 mm, thereby increasing the bandwidth and gain of the antenna 200. Of course, the above values ​​can also be selected according to actual needs, and the embodiments of the present application do not impose specific restrictions on this.

[0046] Optionally, the height of the first antenna 200' can be less than or equal to 4mm, and the maximum size can be 7*12.4*4mm. The height of part of the second antenna 200" can be less than or equal to 4.3mm, and the maximum size can be 8*23.1*4.3mm. The height of another part of the second antenna 200" can be less than or equal to 4mm, and the maximum size can be 11.5*28.2*4mm. Of course, the sizes of the first antenna 200' and the second antenna 200" can be selected according to actual needs, and the embodiments of the present application do not impose specific restrictions on this.

[0047] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A wireless communication device, characterized in that: include: A circuit board (100), the circuit board (100) comprising a first surface (110) and a second surface (120) disposed opposite to each other, the first surface (110) being provided with a metal layer, and the circuit board (100) having a feeding network; At least two antennas (200), each of the antennas (200) is arranged at intervals on the second surface (120), each of the antennas (200) comprises a supporting portion (210) and a radiating portion (220) connected to each other, the supporting portion (210) is connected to the circuit board (100), the radiating portion (220) is bent relative to the supporting portion (210), the supporting portion (210) is provided with a feeding port (211) and a grounding port (212), the feeding port (211) is electrically connected to the feeding network, and the grounding port (212) is electrically connected to the metal layer.

2. The wireless communication device according to claim 1, wherein: The supporting portion (210) comprises a first supporting foot (213) and a second supporting foot (214) which are arranged at intervals, wherein the first end of the first supporting foot (213) and the first end of the second supporting foot (214) are both connected to the radiating portion (220), the second end of the first supporting foot (213) is provided with the feeding port (211), and the second end of the second supporting foot (214) is provided with the grounding port (212), and there is a gap between the first supporting foot (213) and the second supporting foot (214) to form an impedance adjustment portion.

3. The wireless communication device according to claim 2, characterized in that The support portion (210) further comprises a support plate (215), one of the first support leg (213) and the second support leg (214) is connected to the support plate (215), and the support plate (215) is supported on the second surface (120).

4. The wireless communication device according to claim 1, wherein: The support portion (210) comprises a first support plate segment (216) and a second support plate segment (217) which are connected to each other; the first support plate segment (216) is connected to the radiation portion (220); the second support plate segment (217) is bent relative to the first support plate segment (216); the second support plate segment (217) is connected to the circuit board (100); the second support plate segment (217) is arranged in close contact with the second surface (120); and the second support plate segment (217) is provided with the feeding port (211) and the grounding port (212).

5. The wireless communication device according to claim 1, wherein: The radiation portion (220) comprises a first radiation plate segment (221) and a second radiation plate segment (222) which are connected, the second radiation plate segment (222) being bent relative to the first radiation plate segment (221), the first radiation plate segment (221) being connected to the support portion (210), and one of the first radiation plate segment (221) and the second radiation plate segment (222) being parallel to the second surface (120), and the other being bent toward the second surface (120).

6. The wireless communication device according to claim 1, characterized in that The at least two antennas (200) include a first antenna (200') and a second antenna (200"), wherein the first antenna (200') is a single-frequency antenna and the second antenna (200") is a dual-frequency antenna.

7. The wireless communication device according to claim 6, characterized in that The radiating portion (220) of the second antenna (200") includes a first radiating branch (223) and a second radiating branch (224) which are connected to each other, one of the first radiating branch (223) and the second radiating branch (224) being a 2.4G radiating branch and the other being a 5G radiating branch, and both the first radiating branch (223) and the second radiating branch (224) being connected to the supporting portion (210) of the second antenna (200").

8. The wireless communication device according to claim 7, characterized in that: The first radiation branch (223) is a 5G radiation branch, and the feeding port (211) of the second antenna (200") is arranged adjacent to the first radiation branch (223).

9. The wireless communication device according to claim 1, wherein: The support portion (210) is soldered to the circuit board (100) by reflow soldering.

10. The wireless communication device according to claim 1, wherein: At least one of the antennas (200) further comprises a third supporting leg (230), one end of the third supporting leg (230) being connected to the radiating portion (220), the other end of the third supporting leg (230) being supported on the circuit board (100), and the third supporting leg (230) and the supporting portion (210) being respectively located on opposite sides of the radiating portion (220).

Images