TWM463912U - Antenna and wireless communication device - Google Patents

Abstract

An antenna device includes an antenna, a metal plate, and a coaxial cable. The antenna includes a radiating portion and a feed-in portion; the metal plate, having a flanged hole, is used for electrically connected to a system grounding element of the antenna device; and the coaxial cable, passing through the flanged hole, is used for transmitting and receiving radio signals and providing a grounding path, and an inner core of the coaxial cable is electrically connected to the feed-in portion; wherein, the flanged hole is extended to a surface of the metal plate, a border of the flange forms an inclined plane, and the flange clamps the coaxial cable in a tight-fitting manner.

Description

Antenna device and wireless communication device

The present invention relates to an antenna device and a wireless communication device, and more particularly to an antenna device and a wireless communication device having an antenna grounding structure which is simple in structure and provides reliable grounding action.

In wireless communication devices, an antenna for transmitting and receiving radio waves to transmit radio data signals is undoubtedly one of the most important components. A CPE antenna used in a Customer Premise Equipment (CPE) usually needs to be provided with a reflector to increase the performance of the antenna and improve the heat dissipation performance of the chip on the motherboard of the wireless communication device. The antenna device is connected to the main board by a coaxial cable, and the inner core of the coaxial cable is used as a signal line, and the outer layer of the coaxial cable is used as a ground line and connected to the reflector.

In the prior art, there are two kinds of grounding structures in which the reflector of the CPE antenna is connected to the coaxial cable. The first structure uses a special coaxial cable to thread the coaxial cable to engage the nut disposed on the reflector so that the coaxial cable can be locked to the reflector. However, due to the need for a special coaxial cable, it is more expensive. Another conventional technique is to rive the reflector to the copper stud and to solder the coaxial cable to the reflector. However, due to the rapid heat dissipation of the metal on the reflector, it is easy to cause poor soldering or unattractive solder joints, so high soldering techniques are required. In addition, the relatively high cost of the copper studs is a disadvantage of such conventional grounding structures.

Therefore, how to design an antenna grounding structure that meets the requirements of wireless communication devices, and Considering beauty and reducing costs has become one of the goals of the industry.

Therefore, the main purpose of the present invention is to provide an antenna device and a wireless communication device, which have an antenna grounding structure which is simple in structure and provides reliable grounding, can reduce the implementation cost, and is applied to mass production.

The present invention discloses an antenna device for use in a wireless communication device that includes an antenna, a metal plate, and a coaxial cable. The antenna includes a radiating portion and a feeding portion; the metal plate has a flange hole electrically connected to a system grounding member of the antenna device; and the coaxial cable is disposed in the flange hole for transmitting the RF signal And providing a grounding path, the inner core of the coaxial cable is electrically connected to the feeding portion; wherein the flange hole extends a flange on a surface of the metal plate, and an outer edge of the flange forms a slope and The flange clamps the coaxial cable in a tight fit.

The present invention further discloses a wireless communication device comprising a main board, including a radio frequency circuit for generating an RF signal, and an antenna device. The antenna device includes an antenna, a metal plate, and a coaxial cable. The antenna includes a radiating portion and a feeding portion; the metal plate has a flange hole electrically connected to a system grounding member of the antenna device; and the coaxial cable is disposed in the flange hole for transmitting the RF And a grounding path, wherein a core of the coaxial cable is electrically connected to the feeding portion and an output end of the RF circuit; wherein the flange hole extends a flange on a surface of the metal plate, and the turning edge One of the outer edges forms a bevel and the flange holds the coaxial cable in a tight fit.

10‧‧‧ Process

100~108‧‧‧Steps

200, 700‧‧‧Metal plates

202, 702‧‧‧ coaxial cable

204, 704‧‧‧Flanging holes

206, 706‧‧‧Flanging

2060, 7060‧‧‧ outer edge

2080‧‧‧Bevel

708‧‧‧ core

710‧‧‧ outer layer

70‧‧‧Wireless communication device

72‧‧‧Antenna device

720‧‧‧Antenna

722‧‧‧Feeding Department

730‧‧‧ motherboard

H‧‧‧Set height

F‧‧‧External force

DR‧‧‧ Punch

FIG. 1 is a flow chart of a method for fabricating one antenna ground structure according to an embodiment of the present invention.

Fig. 2 is a perspective view showing the antenna grounding structure of one of the embodiments of the present invention before assembly.

Fig. 3 is a side cross-sectional view showing the antenna ground structure in Fig. 2 before assembly.

Fig. 4 is a side cross-sectional view showing the assembled antenna ground structure in Fig. 2;

Fig. 5 is a side cross-sectional view showing the antenna ground structure in Fig. 4 when punched by a punch.

Fig. 6 is a perspective view of the antenna ground structure in Fig. 4 after the stamping is completed.

Figure 7 is a side cross-sectional view showing a wireless communication device of one of the embodiments of the present invention.

The antenna device and the wireless communication device of the present invention have an antenna grounding structure which is simple in structure and provides reliable grounding, and has a simple manufacturing method and can reduce production cost. In order to clarify the antenna grounding structure of the present invention and its advantages, the following describes the manufacturing method and structure thereof.

Please refer to FIG. 1 , which is a schematic diagram of a flow 10 of one of the antenna grounding structures of the present embodiment. The process 10 includes the following steps: Step 100: Start.

Step 102: Making a flange hole on a metal plate.

Step 104: Pass a coaxial cable through the flange hole.

Step 106: Providing a punch, punching the punch toward one of the flange holes, and clamping the flange to the coaxial cable, thereby electrically connecting the coaxial cable to the metal plate.

Step 108: End.

In detail, please refer to FIG. 2 to FIG. 6 together. FIG. 2 is a perspective view of the antenna grounding structure before assembly of the present embodiment, and FIG. 3 is a side cross-sectional view of the antenna grounding structure before assembly, and FIG. FIG. 5 is a side cross-sectional view of the antenna grounding structure assembled in FIG. 2, and FIG. 5 is a side cross-sectional view of the antenna grounding structure in FIG. 4 when punched by a punch, and FIG. 6 is an antenna grounding structure in FIG. A perspective view of the finished stamping. First, as shown in FIG. 2 and FIG. 3, in the present embodiment, a flange hole 204 is formed on a metal plate 200, so that the flange hole 204 extends a flange 206 on the surface of the metal plate 200, wherein The inner diameter of the flange hole 204 can be slightly larger than a coaxial cable The outer diameter of 202 (e.g., 0.03 mm to 0.05 mm larger than the outer diameter of the coaxial cable 202). Next, as shown in FIG. 4, the coaxial cable 202 is inserted into the flange hole 204. The height H of one of the coaxial cables 202 depends on the distance between the metal plate 200 and an antenna, and can be defined by using a fixture. Not limited to this. Then, as shown in Fig. 5, a punch DR is provided, the punch DR is fitted over the upper end of the coaxial cable 202, and an external force F is applied to the punch DR to punch the punch DR in one direction perpendicular to the metal plate 200 ( As indicated by the arrow in Figure 5). The inner side wall of one of the punches DR has an outwardly extending beveled edge 2080. When the punch DR punches the flanged hole 204, the beveled edge 2080 presses the flange 160 of the metal material to make the flange 206 tightly match. The coaxial cable 202 is clamped to electrically connect the coaxial cable 202 to the metal plate 200. Since the inner side wall of the punch DR has an outwardly extending beveled edge 2080, one of the outer edges 2060 of the flange 206 is subjected to extrusion deformation to form a slope. Finally, the punch DR is removed to complete the antenna ground structure as shown in FIG.

Therefore, compared with the antenna grounding structure in the prior art, the coaxial cable needs to be threaded to lock the coaxial cable and the metal plate, or the copper stud is riveted on the reflector and the coaxial cable and the metal are fixed by welding. Board, this creation does not need to add additional parts on the coaxial cable and metal plate, and the production method is simple, so the production cost can be reduced. In addition, molds can also be used to achieve mass production, thereby effectively increasing production efficiency.

It should be noted that the antenna grounding structure of the present invention uses the flange on the metal plate to clamp the coaxial cable in a tightly fitting manner, thereby electrically connecting the coaxial cable to the metal plate, and the person having ordinary knowledge in the field can To make different changes, not limited to this. For example, in order to facilitate the fabrication of the flanged hole and consider the antenna grounding structure and its process characteristics (such as the hardness of the metal plate should be less than the hardness of the punch to carry out the stamping process, the metal plate needs to have better ductility and appropriate hardness, The stamped and deformable clamping coaxial cable is not deformed, the conductivity and thermal conductivity of the metal plate are required to meet the application requirements, etc., and the metal plate is preferably made of a metal aluminum plate, but is not limited thereto. . Other metal materials such as aluminum alloy plates or copper alloy plates can also be used to make metal plates, as long as the metal material can be easily manufactured. It can be considered as a flanged hole and conforms to the antenna grounding structure and its process characteristics. Others such as the thickness of the metal plate, the size of the flange, the angle, etc. are not limited, as long as the process can be clamped after the process 10 can be clamped.

In addition, the antenna ground structure of the present invention can be used in a wireless communication device. Please refer to FIG. 7. FIG. 7 is a side cross-sectional view of the wireless communication device 70 of the present embodiment. The wireless communication device 70 includes a main board 730 and an antenna device 72. The main board 730 can be a printed circuit board, such as a conductive substrate such as a resin copper foil substrate, and includes a radio frequency circuit for generating an RF signal. The antenna device 72 includes an antenna 720, a metal plate 700, and a coaxial cable 702. A radiating portion and a feeding portion 722 are included for transmitting and receiving radio frequency signals. The metal plate 700 is disposed under the antenna 720 and has a flange hole 704 for electrically connecting one of the system grounding members of the antenna device 72. The inner core 708 of the coaxial cable 702 is electrically connected to the input portion of the feeding portion 722 and the RF circuit for transmitting the RF signal, and the outer layer 710 of the coaxial cable 702 is electrically connected to the system grounding member to provide a grounding path. The coaxial cable 702 is passed through the process 10 to be clamped to the metal plate 700 by using a flange 706 on the metal plate 700, thereby electrically connecting the outer layer 710 of the coaxial cable 702 and the metal plate 700.

It should be noted that in the wireless communication device 70, the antenna 720 can be a Directional Antenna, such as a CPE antenna used in an Outdoor Customer Premise Equipment (CPE), and is not limited thereto. At this time, the metal plate 700 can serve as a reflection plate of the antenna 720 to increase the gain of the antenna 720, reduce the interference of other electromagnetic waves, or direct the RF signal to a specific direction, and the like. In addition, the metal plate 700 can also serve as a heat sink for the motherboard 730 to increase the performance of the wireless communication device 70. In this case, a heat conducting element may be disposed between the metal plate 700 and the main board 730 to increase the heat conduction path of the main board 730 to the metal board 700, which should be appropriately changed in the present creation.

In summary, in the prior art, the antenna grounding structure in which the metal plate and the coaxial cable are connected is expensive, and the grounding may be unreliable due to poor soldering, or there may be a problem that the solder joint is not beautiful. In contrast, the antenna grounding structure of the present invention, the antenna device thereof and the wireless communication device can hold the coaxial cable in a tight manner through the flange on the metal plate, thereby electrically connecting the coaxial cable and the metal plate. In this way, the production method is simple and no additional parts are required, so that the production cost can be reduced. In addition, molds can also be used to achieve mass production, thereby effectively increasing production efficiency.

The above descriptions are only preferred embodiments of the present invention, and all changes and modifications made by the scope of the patent application of the present invention should be covered by the present invention.

700‧‧‧Metal plates

702‧‧‧ coaxial cable

704‧‧‧Flanging hole

706‧‧‧Flanging

7060‧‧‧ outer edge

708‧‧‧ core

710‧‧‧ outer layer

70‧‧‧Wireless communication device

72‧‧‧Antenna device

720‧‧‧Antenna

722‧‧‧Feeding Department

730‧‧‧ motherboard

Claims (13)

An antenna device for use in a wireless communication device, the antenna device comprising: an antenna comprising a radiating portion and a feeding portion; a metal plate having a flanged hole electrically connected to one of the antenna devices and grounded And a coaxial cable disposed in the flange hole for transmitting an RF signal and providing a grounding path, wherein a core of the coaxial cable is electrically connected to the feeding portion; wherein the flange hole is in the metal One of the surfaces of the panel extends a flange, and one of the outer edges of the flange forms a slope and the flange clamps the coaxial cable in a tight fit. The antenna device according to claim 1, wherein the inclined surface is formed by punching a punch in a direction perpendicular to one of the metal plates and pressing an inner side wall of the punch to press the flange. The antenna device of claim 2, wherein the inner side wall of the punch has an oblique side that expands outward. The antenna device of claim 2, wherein one of the metal plates has a hardness less than a hardness of the punch. The antenna device of claim 2, wherein the metal plate is made of aluminum, an aluminum alloy or a copper alloy. The antenna device of claim 1, wherein the metal plate is a reflection plate of the antenna. A wireless communication device includes: a main board including a radio frequency circuit for generating an RF signal; and an antenna device including: An antenna includes a radiating portion and a feeding portion; a metal plate having a flanged hole electrically connected to a system grounding member of the antenna device; and a coaxial cable disposed in the flanged hole for Transmitting the RF signal and providing a grounding path, wherein a core of the coaxial cable is electrically connected to the feeding portion and an output end of the RF circuit; wherein the flange hole extends a flange on a surface of the metal plate One of the outer edges of the flange forms a slope and the flange clamps the coaxial cable in a tight fit. The wireless communication device of claim 7, wherein the slope is formed by punching a punch into a vertical direction of one of the metal plates and pressing an edge of the inner side wall of the punch. The wireless communication device of claim 8, wherein the inner side wall of the punch has a beveled edge that expands outward. The wireless communication device of claim 8, wherein one of the metal plates has a hardness less than a hardness of the punch. The wireless communication device of claim 8, wherein the metal plate is made of aluminum, an aluminum alloy or a copper alloy. The wireless communication device of claim 7, wherein the metal plate is a reflector of the antenna. The wireless communication device of claim 7, wherein the metal plate is a heat sink of the main board.