WO2015062047A1

WO2015062047A1 - Method for transmitting signal by means of conductive component in communications apparatus, antenna system, and mobile terminal

Info

Publication number: WO2015062047A1
Application number: PCT/CN2013/086362
Authority: WO
Inventors: 路宝; 卢士强; 陈轶博; 李堃; 母明; 呼延思雷
Original assignee: 华为终端有限公司
Priority date: 2013-10-31
Filing date: 2013-10-31
Publication date: 2015-05-07

Abstract

The present invention provides a method for transmitting a signal by means of a conductive component in a wireless communications apparatus, an antenna system, and a mobile terminal, so as to improve antenna performance of a wireless communications device. The method comprises: a conductive component receiving a radio frequency signal by means of a first end connected to a radio frequency module of a communications apparatus, the radio frequency signal being generated by the radio frequency module; and the conductive component and an antenna connected to a second end of the conductive component converting the radio frequency signal into an electromagnetic wave. The antenna system comprises a conductive component and antenna. The mobile terminal comprises a radio frequency module and the antenna system. In the present invention, a radio frequency signal is transmitted into an antenna of a wireless communications apparatus by means of a conductive component in a communications apparatus, the conductive component becomes a radiator of the antenna, ground covering space of the conductive component becomes radiation space of the antenna, and the space occupied by the antenna becomes larger and the length of the antenna is increased, and the performance of the antenna is improved.

Description

Method for transmitting signal through internal conductive component of communication device, antenna system and mobile terminal

The present invention relates to the field of wireless communications, and in particular, to a method for transmitting a signal through a conductive component inside a communication device, an antenna system, and a mobile terminal. Background technique

With the advent of the intelligent era, the size of the screen of the mobile phone is getting larger and larger, and the power consumption of the screen is getting larger and larger. At the same time, in order to ensure a long standby time of the mobile phone, the capacity of the mobile phone battery is also increasing, so that the space for arranging the antenna of the mobile phone is compressed by the battery to be smaller and smaller. Different types of conductive parts, such as the universal serial bus (USB) of the mobile phone, are placed at different positions. Since the antenna is usually placed at the top or the bottom of the mobile phone, if it is placed at the top or bottom of the mobile phone, The space for arranging the antenna is more occupied, and its performance will be further deteriorated.

During the transmission of current by the antenna, the grounding near the antenna affects the current transmission and may cause a short circuit. Therefore, the larger the space for arranging the antenna, the smaller the ground around the antenna, the larger the current transmitted by the antenna, and the better the performance of the antenna. In the prior art solution, for a mobile phone with a conductive member (such as a USB connector) placed at the bottom end, many antenna designs currently have a ground wire of an inverted F antenna (IFA antenna, Inver sed F Antenna) directly connected to the ground of the USB connector. connection. This prior art connects the ground of the USB connector to the ground of the IFA antenna, eliminating the need for an additional IFA ground, saving space occupied by a portion of the ground, and increasing the space for arranging the antenna. However, the paving of the prior art USB connector area still occupies space available for arranging the antenna, resulting in an impact on antenna performance. Summary of the invention

The present invention provides a method of transmitting a signal through a conductive member inside a communication device, an antenna system, and a mobile terminal, which enhances the antenna performance of a wireless communication device having an internal conductive member in a limited space for arranging the antenna.

In a first aspect, an embodiment of the present invention provides a method for transmitting a signal through a conductive component inside a communication device, the method comprising:

The conductive component receives a radio frequency signal through a first end connected to the radio frequency module of the communication device; the radio frequency signal is generated by the radio frequency module;

The conductive member, and an antenna connected to the second end of the conductive member, the RF signal The number is converted into electromagnetic waves.

The conductive component receives the radio frequency signal through the first end connected to the radio frequency module of the communication device, specifically:

The conductive member receives the radio frequency signal through a signal line connected between the radio frequency module and the first end of the conductive member; or

The electrically conductive component receives the radio frequency signal via a first end of the electrically conductive component by electromagnetic coupling.

In a second aspect, an embodiment of the present invention provides an antenna system for use in a wireless communication device, including:

The first end is electrically connected to the radio frequency module of the wireless communication device, and is configured to receive the first radio frequency signal input by the radio frequency module or output the second radio frequency signal to the radio frequency module;

An antenna, coupled to the second end of the conductive member, for converting the first radio frequency signal into a first electromagnetic wave signal together with the conductive member, or receiving a second electromagnetic wave signal together with the conductive member, and The electromagnetic wave signal is converted into the second radio frequency signal.

The first end of the conductive component is electrically connected to the radio frequency module of the wireless communication device, and the first end of the conductive component is connected to the radio frequency module of the wireless communication device by a signal line; or

The first end of the conductive member is coupled to the radio frequency module of the wireless communication device by electromagnetic coupling.

The electrically conductive component is located inside the wireless communication device.

The conductive member is soldered to a motherboard of the wireless communication device.

The conductive member is a USB connector or a headphone jack.

The antenna is an IFA antenna, a LOOP antenna, a T-type antenna, and a monopole antenna.

The antenna feed point and antenna end of the antenna are intermediate positions at the top or bottom end of the wireless communication terminal.

In a third aspect, an embodiment of the present invention provides a wireless communication apparatus, including:

a radio frequency module, configured to generate a first radio frequency signal, or receive and process a second radio frequency signal; a conductive component, the first end being electrically connected to the radio frequency module of the baseband processing device, and configured to receive the radio frequency module input a radio frequency signal, or outputting the second radio frequency signal to the radio frequency module;

An antenna coupled to the second end of the conductive member for cooperating with the conductive member Converting the first radio frequency signal into a first electromagnetic wave signal; or receiving the second electromagnetic wave signal together with the conductive member, and converting the electromagnetic wave signal into the second radio frequency signal.

The conductive member is a USB connector or a headphone jack.

In the present invention, the radio frequency signal is input to the antenna of the wireless communication device through the conductive component inside the communication device, and the conductive component becomes the radiator of the antenna, and the floor space of the conductive component becomes the radiation space of the antenna, and the space occupied by the antenna becomes large. As the antenna length increases, the antenna radiation efficiency and bandwidth are improved, and the performance of the antenna is improved. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow diagram of a method of one embodiment of the present invention for transmitting signals through conductive components within a communication device.

2 is a flow chart of a method of an embodiment of a reverse transmission of a signal through an internal conductive component of a communication device provided by the present invention.

FIG. 3 is a flow chart of a method for transmitting signals through a USB connector inside a communication device according to the present invention.

FIG. 4 is a flow chart of a method for transmitting signals through a headphone jack of a communication device according to the present invention.

FIG. 5 is a schematic structural view of an embodiment of an antenna system provided by the present invention.

6 is a schematic structural view of another embodiment of an antenna system provided by the present invention.

FIG. 7 is a schematic structural diagram of still another embodiment of an antenna system provided by the present invention. FIG. 8 is a schematic structural diagram of an antenna system including a USB connector provided by the present invention.

FIG. 9 is a schematic structural diagram of an antenna system including a headphone jack provided by the present invention.

FIG. 10 is a schematic structural diagram of an antenna system including a LOOP antenna provided by the present invention.

Fig. 11 is a schematic structural view of an antenna system including an IFA antenna provided by the present invention.

Figure 12 is a block diagram showing the structure of an antenna system including a T-type antenna provided by the present invention.

FIG. 13 is a schematic structural diagram of an antenna system including a monopole antenna provided by the present invention.

FIG. 14 is a schematic structural diagram of an embodiment of a wireless communication device provided by the present invention. detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is apparent that the drawings described below are only some, but not all, of the invention. All other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.

Please refer to FIG. 1. FIG. 1 is a flow chart of a method for transmitting signals through a conductive component inside a communication device according to an embodiment of the present invention. As shown in FIG. 1, the embodiment provides a method for transmitting signals through an internal conductive component of a communication device, and the method may include the following steps:

Step 100: The radio frequency module generates a radio frequency signal.

For a wireless communication terminal, the radio frequency module can be a radio frequency chip. The radio frequency module may include: a digital-to-analog converter, configured to convert a digital signal carrying information to be transmitted into an analog signal; and a mixer for adjusting the analog signal to a suitable frequency;

A power amplifier for amplifying the analog signal that has passed the frequency adjustment of the mixer.

The signal amplified by the power amplifier is the radio frequency signal. Generally, the radio frequency signal is an alternating current having a certain frequency;

Step 200, the radio frequency module inputs the radio frequency signal into the conductive component via a first end of the conductive component;

The radio frequency module may directly input the radio frequency signal into the conductive component through a signal line connected to the first end of the conductive member; or

The radio frequency module inputs the radio frequency signal into the conductive component by electromagnetic coupling.

Specifically, the output end of the radio frequency module is provided with a first coupling piece, and the conductive component is used for connection a first coupling end is disposed at the first end of the receiving RF signal, and a coupling slot is disposed between the first coupling piece and the second coupling piece; the RF signal is input through the first coupling piece, the coupling slot and the second coupling piece Conductive parts.

Step 300, the conductive member, and an antenna connected to the second end of the conductive member convert the radio frequency signal into an electromagnetic wave;

After the radio frequency signal in the form of an alternating current is converted into an electromagnetic wave via the conductive member and the antenna, the electromagnetic wave is radiated into space.

In this embodiment, the radio frequency signal is first input to a conductive member inside the communication device, and is electrically converted into an electromagnetic wave by the conductive member and the antenna connected to the conductive member. The conductive component is connected between the RF module and the antenna, and converts the RF signal into an electromagnetic wave, which is equivalent to increasing the effective length of the antenna, improving the radiation efficiency and bandwidth of the antenna, and improving the performance of the antenna.

Referring to FIG. 2, FIG. 2 is a flowchart of a method for transmitting a signal through a conductive component inside a communication device according to the present invention. The method may include the following steps:

Step 500, the antenna and the conductive component connected to the antenna receive electromagnetic waves, and convert the electromagnetic wave into a radio frequency signal; the antenna and the second end of the conductive component are electrically connected;

Electromagnetic waves are converted into radio frequency signals in the form of alternating current via the antenna and the electrically conductive component. Step 600, the conductive component outputs the radio frequency signal to a radio frequency module electrically connected to the first end of the conductive component;

The conductive component may directly input the radio frequency signal into the radio frequency module through a signal line connected to the radio frequency module; or

The conductive member inputs the radio frequency signal into the radio frequency module by electromagnetic coupling.

Specifically, the first end of the conductive component for transmitting the radio frequency signal is provided with the first coupling piece, the input end of the radio frequency signal is provided with the second coupling piece, and the coupling stitch is disposed between the first coupling piece and the second coupling piece. The radio frequency signal is input to the radio frequency module through a first coupling piece, a coupling slot and a second coupling piece.

For a wireless communication terminal, the radio frequency module can be a radio frequency chip. The radio frequency module can include:

a power amplifier for performing power amplification on the received radio frequency signal;

An analog to digital converter for converting an analog RF signal into a digital signal.

In this embodiment, the electromagnetic wave is first input into the antenna of the communication device, and is connected to the antenna and the antenna. The internal conductive components of the connected communication device work together to convert into RF signals. The conductive component is connected between the RF module and the antenna, and converts the electromagnetic wave into a radio frequency signal, which is equivalent to increasing the effective length of the antenna, improving the radiation efficiency and bandwidth of the antenna, and improving the performance of the antenna.

In the above embodiment, as shown in Fig. 3, the conductive member may be a USB connector. The radio frequency module generates a radio frequency signal; the radio frequency module inputs the radio frequency signal into the USB connector via a first end of the USB connector; and the USB connector and an antenna connected to the second end of the USB connector convert the radio frequency signal An electromagnetic wave; the USB connector and the antenna radiate electromagnetic waves into which the radio frequency signal is converted into space.

In the above embodiment, as shown in FIG. 4, the conductive member may be a headphone jack. The radio frequency module generates a radio frequency signal; the radio frequency module inputs the radio frequency signal into the earphone jack via a first end of the earphone jack; the earphone jack and an antenna connected to the second end of the earphone jack The radio frequency signal is converted into electromagnetic waves; the earphone jack and the antenna radiate electromagnetic waves into which the radio frequency signals are converted into space.

Please refer to FIG. 5. FIG. 5 is a schematic structural diagram of an embodiment of an antenna system provided by the present invention. As shown in FIG. 5, the antenna system includes:

The first end is electrically connected to the radio frequency module of the wireless communication device, and is configured to receive a first radio frequency signal output by the radio frequency module or output a second radio frequency signal to the radio frequency module; the antenna 203, and the conductive component a second end of the connection 202, configured to convert the first radio frequency signal into a first electromagnetic wave signal together with the conductive component, or receive a second electromagnetic wave signal together with the conductive component, and convert the electromagnetic wave signal into The second radio frequency signal.

In one embodiment of the invention, the conductive member 202 and the radio frequency module are soldered to a printed circuit board (PCB) of the wireless communication device.

In the antenna system described in this embodiment, since the conductive member 202 is connected between the radio frequency chip that generates the first radio frequency signal or receives and processes the second radio frequency signal and the antenna 203, the first radio frequency signal is subjected to conduction when being transmitted. The common conversion and transmission of the component 202 and the antenna 203; and when the second RF signal is received, the conductive component 202 and the antenna 203 collectively receive electromagnetic waves and convert the electromagnetic wave into a second RF signal, which is equivalent to transmitting and receiving signals. The effective length of the antenna is increased, and the body of the conductive member becomes a part of the antenna, which improves the radiation efficiency and bandwidth of the antenna and improves the performance of the antenna.

In one embodiment of the invention, the first end of the conductive member 202 can be electrically connected to the radio frequency module via a signal line. Specifically, referring to FIG. 6, the first end of the conductive member 202 and the One end of the signal line 21 0 is connected; the RF module 204 is connected to the other end of the signal line 210.

In one embodiment of the invention, the electrically conductive component 202 can also be electrically coupled to the radio frequency module by electromagnetic coupling. Specifically, referring to FIG. 7, the first end of the conductive member 202 is connected to the first coupling piece 208, and the RF module is connected to the second coupling piece 207 through the signal line 210, between the first coupling piece 208 and the second coupling piece 207. A coupling slit 209 is provided. The RF signal can be coupled from the RF module to the conductive component 202 via the second coupler 207, the coupling slot 209, and the first coupler 208, and then the antenna 203 coupled to the conductive component. Similarly, the electromagnetic wave received by the conductive component 202 and the antenna 203 is converted into a radio frequency signal by the conductive component 202 and the antenna 203, and then coupled to the radio frequency module via the first coupling piece 208, the coupling slot 209 and the second coupling piece 207. .

FIG. 7 shows a specific implementation manner of transmitting electromagnetic signals by electromagnetic coupling. Of course, other coupling modes may also be used. The coupling structure and the coupling mode are not limited in the present invention.

In the above embodiment, as shown in Fig. 8, the conductive member 202 may be a USB connector 2021 inside the wireless communication device. The USB connector 2021 can be a built-in USB connector, and the second end is connected to the antenna 203; the first end is connected to the RF module.

In the above embodiment, as shown in FIG. 9, the conductive member 202 may be a headphone jack 2022 inside the wireless communication device, and the second end thereof is connected to the antenna 203, and the first end is connected to the radio frequency module.

In the above embodiment, as shown in FIG. 10, the antenna 203 may be a loop antenna (Loop, Loop Antenna) 2031. The loop antenna may be a built-in antenna, the first end of which is electrically connected to the second conductive member 202; the second end is connected to the ground line 205.

In the above embodiment, as shown in FIG. 11 , the antenna 203 may be an inverted F antenna (I FA , Inver sed F Antenna ) 2032 , and one end thereof is connected to the second end of the conductive member 20 ² . Any position of the I FA antenna 2032 or any location of the conductive member 202 is connected to the ground 205.

In the above embodiment, as shown in FIG. 12, the antenna 203 may be a T-type antenna 2033 having one end connected to the second end of the conductive member 202.

In the above embodiment, as shown in FIG. 13 , the antenna 203 may be a monopole antenna 2034, and one end thereof is connected to the second end of the conductive member 20 ² .

In the above embodiment in which the conductive member of the present invention is electrically connected to the radio frequency module through a signal line, the electric wire feed point is a connection point of the antenna 203 and the second end of the conductive member 202. Preferably, the antenna feed point is at an intermediate position between the top end and the bottom end of the wireless communication device, and the wireless communication device Keeping the hand-held parts far apart can impair the adverse effects of the user's hand or head on the performance of the antenna during use of the wireless communication device.

In the above embodiment of the present invention, the antenna 203 may be an external antenna or a built-in antenna. When the antenna 203 is a built-in antenna, it can be printed on the PCB or printed on the rear case of the communication device. When the antenna 203 is an internal antenna printed on the rear case, in the above coupling connection form, since the coupling piece is printed on the PCB, the antenna 203 printed on the rear case is not at the same height, and the antenna passes through The metal dome is electrically connected to the coupling piece printed on the PCB to realize the connection between the antenna and the PCB. The antenna traces can be adjusted according to the antenna frequency band and the actual environment.

Referring to FIG. 14, FIG. 14 is a schematic structural diagram of a wireless communication apparatus using the antenna system according to an embodiment of the present invention. As shown in FIG. 14, the wireless communication device 300 includes:

The radio frequency module 303 is configured to convert the digital signal generated by the user input into the first radio frequency signal; the conductive component 202 is electrically connected to the radio frequency processing device, and configured to receive the first radio frequency signal output by the radio frequency processing device Or inputting a second radio frequency signal to the radio frequency processing device;

An antenna 203, connected to the second end of the conductive component, for converting the first radio frequency signal into an electromagnetic wave signal together with the conductive component, or receiving a second electromagnetic wave signal together with the conductive component, and The electromagnetic wave signal is converted into the second radio frequency signal.

The first end of the conductive member 202 is electrically connected to the radio frequency processing device, specifically: the first end of the conductive member 202 is connected to the radio frequency processing device through a signal line; or the first end of the conductive member 202 The RF processing device is connected by electromagnetic coupling.

The conductive component is located 202 inside the wireless communication device 300.

The conductive member 202 can be a USB connector or a headphone jack.

The antenna 203 may be an I FA antenna, a LOOP antenna, a T-type antenna, or a monopole antenna. Further, in this embodiment, the wireless communication device 300 further includes:

An input device 301, configured to receive input of a user;

The baseband processing device 302 is configured to convert the user's input into a digital signal.

In view of the above, the above embodiments are only used to explain the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that: The technical solutions described in the above embodiments are modified, or some of the technical features are equivalently replaced; and the modifications or replacements do not make the corresponding technical solutions. The essence of the spirit and scope of the technical solutions of the embodiments of the present invention

Claims

Rights request

1. A method of transmitting signals through conductive components inside a communication device, characterized in that the method includes:

The conductive component and the antenna connected to the second end of the conductive component convert the radio frequency signal into electromagnetic waves.

2. The method according to claim 2, wherein the conductive component receives the radio frequency signal through the first end connected to the radio frequency module of the communication device. Specifically:

The conductive component receives the radio frequency signal through a signal line connected between the radio frequency module and the first end of the conductive component; or

The conductive component receives the radio frequency signal through the first end of the conductive component through electromagnetic coupling.

3. An antenna system used in a wireless communication device, characterized in that it includes: a conductive component, a first end electrically connected to the radio frequency module of the wireless communication device, and used to receive the first radio frequency input by the radio frequency module. signal or output a second radio frequency signal to the radio frequency module;

The antenna is connected to the second end of the conductive component, and is used to convert the first radio frequency signal into a first electromagnetic wave signal together with the conductive component, or to receive the second electromagnetic wave signal together with the conductive component, and The electromagnetic wave signal is converted into the second radio frequency signal.

4. The antenna system according to claim 3, wherein the electrical connection between the first end of the conductive component and the radio frequency module of the wireless communication device is specifically:

The first end of the conductive component is connected to the radio frequency module of the wireless communication device through a signal line; or

The first end of the conductive component is connected to the radio frequency module of the wireless communication device through electromagnetic coupling.

5. The antenna system according to claim 3 or 4, characterized in that the conductive component is located inside the wireless communication device.

6. The antenna system according to any one of claims 3 to 5, characterized in that the conductive component is welded to the main board of the wireless communication device.

7. The antenna system according to any one of claims 3-6, characterized in that the conductive component For USB connector or headphone jack.

8. The antenna system according to any one of claims 3 to 7, characterized in that the antenna is an IFA antenna, a LOOP antenna, a T-shaped antenna or a monopole antenna.

9. The antenna system according to any one of claims 3 to 8, characterized in that the antenna feed point and the antenna end of the antenna are located in the middle of the top or bottom of the wireless communication terminal.

10. A wireless communication device, characterized by including:

A radio frequency module, used to generate a first radio frequency signal, or receive and process a second radio frequency signal; a conductive component, a first end electrically connected to the radio frequency module, used to receive the first radio frequency signal input by the radio frequency module, Or output the second radio frequency signal to the radio frequency module;

The antenna is connected to the second end of the conductive component, and is used to convert the first radio frequency signal into a first electromagnetic wave signal together with the conductive component; or to receive the second electromagnetic wave signal together with the conductive component, and The electromagnetic wave signal is converted into the second radio frequency signal.

11. The wireless communication device according to claim 10, wherein the electrical connection between the first end of the conductive component and the radio frequency module is specifically:

The first end of the conductive component is connected to the radio frequency module through a signal line; or

The first end of the conductive component is connected to the radio frequency module through electromagnetic coupling.

12. The wireless communication device according to claim 10 or 11, characterized in that the conductive component is located inside the wireless communication device.

13. The wireless communication device according to any one of claims 10 to 12, characterized in that the conductive component is a USB connector or a headphone jack.

14. The wireless communication device according to any one of claims 10-13, characterized in that the antenna is an IFA antenna, a LOOP antenna, a T-shaped antenna, or a monopole antenna.