CN105514570B - communication device and antenna thereof - Google Patents

Abstract

The present invention relates to an antenna of a communication device, comprising a metal frame, a metal back cover, and a printed circuit board located between the metal frame and the metal back cover. The printed circuit board includes a first circuit block and a second circuit block electrically connected to the first circuit block, each block includes a signal end and a grounding segment, and the grounding segment contacts the metal back cover. A first conductor connects between the first part of the metal frame and the signal end of the first circuit block. A second conductor connects between the second part of the metal frame and the grounding segment of the first circuit block. A third conductor is connected to the third part of the metal frame. A fourth conductor connects the grounding segment of the second circuit block, and at least one coupling distance is defined between the third conductor and the fourth conductor. The signal end of the second circuit block is electrically connected to the fourth part of the metal frame.

Description

Communication device and its antenna

technical field

The invention relates to a communication device and its antenna, in particular to a communication device that can use a metal frame as a shared antenna for transmitting and receiving radio signals of the communication device.

Background technique

In the development process of previous communication devices, such as handheld mobile products, manufacturers mostly use plastic casings based on cost considerations in order to maintain the basic radiation characteristics of the antenna. But with the trend of metal casing brought by Apple iPhone and Macbook, coupled with its own advantages of light weight, good heat dissipation, strong structure, impact resistance, beautiful appearance, anti-electromagnetic wave and recyclability, the penetration rate of metal casing Gradually go higher. Therefore, the new generation of mobile product development is mainly based on metal casings. For example, the U.S. patent U.S. 8,054,231 B2 issued to Ahn et al. discloses a metal cover that uses a slot antenna (slot antenna) ( metal case) is used as the antenna of the mobile device, but the disadvantage is that such a slot will obviously damage the appearance of the metal cover, and the position of such a slot needs to correspond to a specific area of the metal cover. Apple iPhone series mobile phones from 4 series to 5 series have boldly used some metal structural parts of mobile phones as part of the antenna to participate in radiation. The participation of metal structural parts in the antenna design is conducive to further utilizing limited space and reducing size. iPhone4 is a metal loop antenna, and iPhone5 is a dynamic metal loop antenna. , but it also affects the aesthetic effect of the appearance.

Therefore, how to design a suitable antenna so that the electromagnetic waves generated by it can penetrate the metal casing to achieve the effect of communication without damaging the appearance of the metal structure is really important.

Contents of the invention

The object of the present invention is to provide an antenna for a communication device, in particular, an antenna for a communication device assembled without damaging the appearance of metal structural parts.

A communication device according to one aspect of the present invention includes a metal frame, a display module, a display panel, a metal back cover, a printed circuit board and a body, the metal frame defines an opening, and the display panel is mounted on Between the display module and the metal frame, and corresponding to the opening of the metal frame, the body is located between the metal frame and the metal back cover, the body is a non-conductive material, and its characteristics are: The metal frame has a first part, a second part whose position is different from the first part, a third part, and a fourth part whose position is different from the third part; the printed circuit board includes a first circuit block and A second circuit block, the second circuit block is electrically connected to the first circuit block, each block includes a signal terminal and a ground section, wherein the ground section is in contact with the metal back cover; a The first conductor is connected between the first part of the metal frame and the signal terminal of the first circuit block of the printed circuit board; a second conductor is connected between the second part of the metal frame and the first circuit of the printed circuit board Between the ground section of the block; a third conductor connected to the third part of the metal frame; and a fourth conductor connected to the ground section of the second circuit block of the printed circuit board, and the third conductor and the first At least one coupling distance is defined between the four conductors; wherein, the signal terminal of the second circuit block of the printed circuit board is electrically connected to the fourth part of the metal frame.

Wherein, the first part and the second part of the metal frame are located relatively close to the upper right position of the display panel.

Wherein, the third part and the fourth part of the metal frame are located relatively close to the lower right position of the display panel.

An antenna for a communication device according to another aspect of the present invention includes a metal frame, a metal back cover, and a printed circuit board, and is characterized in that: the metal frame has a first part, a second part, and a third part , and a fourth part; the printed circuit board includes a first circuit block and a second circuit block, the second circuit block is electrically connected to the first circuit block, each block includes a a signal terminal and a ground section, wherein the ground section is in contact with the metal back cover; a first conductor is connected between the first part of the metal frame and the signal terminal of the first circuit block of the printed circuit board; a first conductor Two conductors are connected between the second part of the metal frame and the ground section of the first circuit block of the printed circuit board; a third conductor is connected to the third part of the metal frame; and a fourth conductor is connected to the printed circuit board. The ground segment of the second circuit block of the circuit board, and at least one coupling distance is defined between the third conductor and the fourth conductor; wherein, the signal end of the second circuit block of the printed circuit board is electrically connected to The fourth part of the metal frame is coupled to the ground section of the second circuit block of the printed circuit board through the at least one coupling distance.

Wherein, the third conductor extends a length to the second circuit block located close to the printed circuit board.

Description of drawings

To further illustrate and confirm the above-mentioned purpose, structural features and effects of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic diagram showing the appearance of a communication device according to an embodiment of the present invention.

FIG. 2 is an exploded schematic diagram of a communication device according to an embodiment of the present invention.

FIG. 3 shows a schematic diagram of an antenna configuration of a communication device according to an embodiment of the present invention.

FIG. 4 shows a schematic diagram of an antenna configuration of a communication device in a first position according to an embodiment of the present invention.

FIG. 5 shows a schematic diagram of the antenna configuration of the communication device in the first position according to the embodiment of the present invention (the metal frame is not shown).

FIG. 6 is a schematic diagram showing the relationship between the metal back cover and the ground section of the first circuit block of the printed circuit board according to the embodiment of the present invention.

FIG. 7 shows a schematic diagram of an antenna configuration of a communication device in a second position according to an embodiment of the present invention.

FIG. 8 shows a schematic diagram of the antenna configuration of the communication device in the second position according to the embodiment of the present invention (the metal frame is not shown).

FIG. 9 shows an enlarged schematic view of position A in FIG. 8 .

FIG. 10 is a schematic diagram showing the relationship between the metal back cover and the ground section of the printed circuit board according to the embodiment of the present invention.

Detailed ways

1 and 2 show that the communication device 10 of the embodiment of the present invention generally includes a metal frame 12, a display module 14, a display panel 16, a metal back cover 18, a printed circuit board (printed circuit board) 20, and A body 22 . Wherein, the metal frame 12 is substantially a rectangular frame defining an opening 24 for use as a front cover of the communication device 10 . The display module 14 and the display panel 16 can be a separate structure or an integrated structure, which is not limited in implementation. The display panel 16 is installed between the display module 14 and the metal frame 12 and corresponds to the opening 24 of the metal frame 12 . The display panel 16 is made of glass, but not limited to this material. The metal back cover 18 is substantially rectangular, and its position is roughly corresponding to the bottom of the main body 22 , which is used as the back cover of the communication device 10 . The printed circuit board 20 is located between the metal frame 12 and the metal back cover 18, the printed circuit board 20 includes a first circuit block 26 and a second circuit block 28 electrically connected to the first circuit block 26 . The main body 22 is located between the metal frame 12 and the metal back cover 18 to install the display module 14 , the display panel 16 , and the printed circuit board 20 on the main body 22 . In addition, the body 22 is made of a non-conductive material, such as plastic, but not limited thereto.

FIG. 3 shows a schematic diagram of an antenna configuration of a communication device according to an embodiment of the present invention. 4 to 6 are diagrams showing antenna arrangements of the communication device 10 supporting a first communication function, such as a Global Positioning System (GPS) function. The configuration includes the aforementioned metal frame 12 , the aforementioned first circuit block 26 of the printed circuit board 20 , a first conductor 30 , a second conductor 32 and the aforementioned metal back cover 18 . Wherein, the aforementioned metal frame 12 has a first portion 34 and a second portion 36 whose positions are different from the first portion 34 . In a preferred embodiment, the first portion 34 and the second portion 36 of the metal frame 12 are located relatively close to the upper right position of the display panel 16 . The aforementioned first circuit block 26 of the printed circuit board 20 includes a signal terminal 38 and a ground section 40 . The aforementioned first conductor 30 is connected between the first portion 34 of the metal frame 12 and the signal terminal 38 of the first circuit block 26 of the printed circuit board 20 . The aforementioned second conductor 32 is connected between the second portion 36 of the metal frame 12 and the ground section 40 of the first circuit block 26 of the printed circuit board 20 . When assembled, the aforementioned metal back cover 18 contacts the ground segment 40 of the first circuit block 26 of the printed circuit board 20 .

FIG. 7 to FIG. 10 show schematic diagrams of the antenna arrangement (antenna arrangement) of the communication device 10 supporting a second communication function, such as a Global System for Mobile Communications (GSM) function. This configuration uses the aforementioned metal frame 12 as a shared antenna, and includes the aforementioned second circuit block 28 of the printed circuit board 20 , a third conductor 42 , a fourth conductor 44 , and a signal line 46 . Wherein, the aforementioned second circuit block 28 of the printed circuit board 20 includes a signal terminal 48 and a ground section 50 . The aforementioned metal frame 12 has a third portion 52 and a fourth portion 54 whose positions are different from the third portion 52 . In a preferred embodiment, the third portion 52 and the fourth portion 54 of the metal frame 12 are located relatively close to the lower right of the display panel 16 . The aforementioned third conductor 42 is connected to the third portion 52 of the metal frame 12 and extends a length to the second circuit block 28 located close to the printed circuit board 20 . The aforementioned fourth conductor 44 is connected to the ground plane of the second circuit block 28 of the printed circuit board 20 and conducts with the ground segment 50 , and at least one coupling is defined between the third conductor 42 and the fourth conductor 44 Spacing 56. The signal terminal 48 of the second circuit block 28 of the printed circuit board 20 is electrically connected to the fourth portion 54 of the metal frame 12 . In practice, the fourth part 54 of the metal frame 12 can be connected or contacted through the aforementioned signal line 46; or, in another embodiment, the signal terminal 48 of the second circuit block 28 of the printed circuit board 20 can also be The fourth portion 54 that can be directly connected to or contacted with the metal frame 12 is not limited in implementation. When assembled, the aforementioned metal back cover 18 contacts the ground section 50 of the second circuit block 28 of the printed circuit board 20 .

According to the above-mentioned configuration, when the communication device 10 is operated by an external electric energy such as battery energy, the metal frame 12 can be used as a shared antenna for the first communication function (GPS) and the second communication function (GSM). The state is similar to a large loop antenna (loop antenna), and the first conductor 30 and the second conductor 32 are combined to form a small loop antenna smaller than the metal frame 12, and through the calculation processing of the printed circuit board 20, to provide The communication capability required by the communication device 10 . On the other hand, an open-circuit state is formed between the third conductor 42 and the fourth conductor 44 through the at least one coupling gap 56 in advance, and the required antenna matching, such as impedance matching, can be adjusted according to requirements. Through this The segment is coupled to the ground plane of the second circuit block 28 of the printed circuit board 20 and the ground segment 50 , used for grounding, is assembled and contacts the metal back cover 18 .

According to the above description, it can be seen that the improved efficacy and advantages of the present invention are: the design of the antenna will not damage the appearance of the metal back cover and the metal frame, and has the advantage of being more beautiful than the known ones, making the design of the entire communication device richer. diversification.

Although the present invention has been described with reference to the current specific embodiments, those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, and other modifications can be made without departing from the spirit of the present invention. Various equivalent changes and modifications, therefore, as long as the changes and modifications to the above embodiments are within the true spirit of the present invention, they will all fall within the scope of the claims of the present application.

Claims (5)

1. A communication device, comprising a metal frame, a display module, a display panel, a metal back cover, a printed circuit board and a body, the metal frame defines an opening, and the display panel is mounted on the display Between the module and the metal frame, and corresponding to the opening of the metal frame, the body is located between the metal frame and the metal back cover, the body is a non-conductive material, and it is characterized in that: The metal frame has a first part, a second part whose position is different from the first part, a third part, and a fourth part whose position is different from the third part; The printed circuit board includes a first circuit block and a second circuit block, the second circuit block is electrically connected to the first circuit block, each block includes a signal terminal and a ground section, Wherein, both the ground section of the first circuit block and the ground section of the second circuit block are in contact with the metal back cover; A first conductor is connected between the first part of the metal frame and the signal terminal of the first circuit block of the printed circuit board; A second conductor is connected between the second portion of the metal frame and the ground segment of the first circuit block of the printed circuit board; a third conductor connected to the third portion of the metal frame; and A fourth conductor is connected to the ground segment of the second circuit block of the printed circuit board, and at least a coupling distance is defined between the third conductor and the fourth conductor; Wherein, the signal terminal of the second circuit block of the printed circuit board is electrically connected to the fourth part of the metal frame. 2. The communication device according to claim 1, wherein the first part and the second part of the metal frame are located relatively close to the upper right position of the display panel. 3. The communication device according to claim 1, wherein the third part and the fourth part of the metal frame are located relatively close to the lower right of the display panel. 4. An antenna for a communication device, comprising a metal frame, a metal back cover, and a printed circuit board, characterized in that: The metal frame has a first part, a second part, a third part, and a fourth part; The printed circuit board includes a first circuit block and a second circuit block, the second circuit block is electrically connected to the first circuit block, each block includes a signal terminal and a ground section, Wherein, both the ground section of the first circuit block and the ground section of the second circuit block are in contact with the metal back cover; A first conductor is connected between the first part of the metal frame and the signal terminal of the first circuit block of the printed circuit board; A second conductor is connected between the second portion of the metal frame and the ground segment of the first circuit block of the printed circuit board; a third conductor connected to the third portion of the metal frame; and A fourth conductor is connected to the ground segment of the second circuit block of the printed circuit board, and at least a coupling distance is defined between the third conductor and the fourth conductor; Wherein, the signal end of the second circuit block of the printed circuit board is electrically connected to the fourth part of the metal frame, and is coupled to the ground of the second circuit block of the printed circuit board by means of the at least one coupling distance. lot. 5. The antenna of the communication device according to claim 4, wherein the third conductor extends a length to a second circuit block located close to the printed circuit board.