CN115133946A

CN115133946A - Radio frequency signal device and mobile terminal

Info

Publication number: CN115133946A
Application number: CN202210600010.3A
Authority: CN
Inventors: 张波
Original assignee: SHENZHEN CHINO-E COMMUNICATION CO LTD
Current assignee: SHENZHEN CHINO-E COMMUNICATION CO LTD
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-09-30

Abstract

The invention relates to a radio frequency signal device which comprises a plurality of radio frequency channel matching devices and a plurality of radio frequency signal line groups, wherein the radio frequency channel matching devices are electrically connected through the radio frequency signal line groups in sequence to form an antenna communication data transmission channel, each radio frequency signal line group comprises at least two radio frequency signal lines, each radio frequency signal line comprises a first connecting end and a second connecting end, the first connecting ends of the radio frequency signal lines are connected with each other, and the second connecting ends of the radio frequency signal lines are connected with each other. Compared with the prior art, the invention provides the radio frequency signal device, when the radio frequency signal line is transmitted at high speed, the width of the radio frequency signal line can meet the performance requirement of the radio frequency signal line, the line loss generated when the radio frequency signal device transmits signals is small, and the signal waveform is high in quality. And the requirement on the production process is low, and the mass production is easy.

Description

Radio frequency signal device and mobile terminal

Technical Field

The present invention relates to the field of radio frequency signal technology, and in particular, to a radio frequency signal device and a mobile terminal.

Background

With the increasing importance of the public on the hand feeling experience of the mobile terminal, the thickness of the whole mobile terminal is thinner and thinner nowadays, and from a chip to each structural part and the like, the thickness of a PCB of the mobile terminal is also changed from 1.2mm before to 0.7mm which is mainstream at present, and even is reduced to 0.55 mm. Meanwhile, mobile communication is also developed to 5G, which means that the number of antennas in a mobile terminal is increased, the number of radio frequency bands is increased, and the difficulty in designing radio frequency signal lines is increased.

The impedance of the radio frequency signal line is required to reach a preset requirement, the impedance of the general radio frequency signal line is required to be 50 ohms, the impedance of the general radio frequency signal line is determined by the copper thickness of a PCB, the dielectric constant of a prepreg, the distance from the signal line to a reference surface of the PCB and the width of the signal line, and the impedance of the general radio frequency signal line can reach the preset requirement only by adjusting the width of the signal line because the dielectric constant of the prepreg, the copper thickness of the PCB and the distance from the signal line to the reference surface of the PCB cannot be adjusted. However, since the signal rate on the rf signal line is high, there is a skin effect, and the too thin rf signal line will cause a problem of large line loss and poor signal waveform. In addition, the requirement of the too thin radio frequency signal line on the production process is high, and the mass production is difficult.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the radio frequency signal device 21, the line width of a radio frequency signal line can be improved, meanwhile, the design requirement can be met, the line loss generated by signal transmission is small, the signal waveform is good, the requirement on the production process is low, and the mass production is easy.

The invention is realized by the following technical scheme: a radio frequency signal device comprises a plurality of radio frequency path matching devices and a plurality of radio frequency signal line groups, wherein the radio frequency path matching devices are sequentially and electrically connected through the radio frequency signal line groups to form an antenna communication data transmission path, each radio frequency signal line group comprises at least two radio frequency signal lines, each radio frequency signal line comprises a first connecting end and a second connecting end, the first connecting ends of the radio frequency signal lines are connected with each other, and the second connecting ends of the radio frequency signal lines are connected with each other.

Compared with the prior art, the invention provides the radio frequency signal device, when the radio frequency signal line is transmitted at high speed, the width of the radio frequency signal line can meet the performance requirement of the radio frequency signal line, the line loss generated when the radio frequency signal device transmits signals is small, and the signal waveform is high in quality. And the requirement on the production process is low, and the mass production is easy.

Further, the radio frequency circuit matching device and the radio frequency signal wire are welded on the mainboard, the edge of the cross section of the radio frequency signal wire, which is in contact with the mainboard, is a first edge, the edge of the cross section, which is opposite to the first edge, is a second edge, and the width of the first edge is greater than that of the second edge.

The radio frequency path matching device comprises an antenna, an antenna elastic sheet, at least one amplifier, a tuner, one or more oscillators, a user identity module card, an IC chip, a transceiver, a coupler, a low noise amplifier and a duplexer which are connected through the radio frequency signal line group.

Furthermore, the main board comprises a reference layer, a semi-solidified dielectric layer and a pad, the semi-solidified dielectric layer is arranged on the reference layer, the pad is arranged on the semi-solidified dielectric layer, and the radio frequency path matching device and the radio frequency signal line group are welded on the semi-solidified dielectric layer through the pad.

Further, the thickness of the semi-solidified dielectric layer is 45 micrometers, the height of the cross section of the radio frequency signal line is 27 micrometers, the width of a first edge of the cross section of the radio frequency signal line is 180 micrometers, the width of a second edge of the cross section of the radio frequency signal line is 190 micrometers, and the line spacing between the radio frequency signal lines in the same radio frequency signal line group is 50 micrometers.

Based on the same inventive concept, the application further provides a mobile terminal, which comprises a radio frequency signal device, wherein the radio frequency signal device comprises a plurality of radio frequency channel matching devices and a plurality of radio frequency signal line groups, the radio frequency channel matching devices are electrically connected in sequence through the radio frequency signal line groups to form an antenna communication data transmission channel, each radio frequency signal line group comprises at least two radio frequency signal lines, each radio frequency signal line comprises a first connecting end and a second connecting end, the first connecting ends of the radio frequency signal lines are connected with each other, and the second connecting ends of the radio frequency signal lines are connected with each other.

Furthermore, the radio frequency signal device further comprises a main board, the radio frequency path matching device and the radio frequency signal line are welded on the main board, the edge of the cross section, contacting the main board, of the radio frequency signal line is a first edge, the edge of the cross section, opposite to the first edge, of the radio frequency signal line is a second edge, and the width of the first edge is larger than that of the second edge.

Further, the radio frequency path matching device comprises an antenna, an antenna shrapnel, at least one amplifier, a tuner, one or more oscillators, a user identity module card, an IC chip, a transceiver, a coupler, a low noise amplifier and a duplexer which are connected through the radio frequency signal line group.

Further, the thickness of the semi-solidified dielectric layer is 45 micrometers, the thickness of the radio frequency signal line is 27 micrometers, the width of a first edge of the radio frequency signal line is 180 micrometers, the width of a second edge of the radio frequency signal line is 190 micrometers, and the distance between the radio frequency signal lines is 50 micrometers.

For a better understanding and practice, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic cross-sectional view of an exemplary RF signaling device;

fig. 2 is a schematic diagram illustrating routing of an rf signal line set according to an embodiment;

fig. 3 is a schematic structural diagram of the terminal according to the embodiment.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials. In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The embodiment of the invention provides a radio frequency signal device and a mobile terminal, wherein the radio frequency signal device can be matched with a terminal for use, such as a smart phone, a tablet computer, a notebook computer or a personal computer. The apparatus and the terminal will be described in detail below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.

Please refer to fig. 1, which is a schematic cross-sectional structure diagram of the rf signal device of the present embodiment. The device comprises a mainboard 11, a radio frequency path matching device (not shown) and a radio frequency signal line group, wherein the mainboard 11 is used for circuit wiring; the radio frequency path matching device is arranged on the mainboard 11 and is used for realizing the functions required in the communication data transmission path of the antenna; the radio frequency signal line group is connected between the radio frequency path matching devices and used for realizing data transmission between the radio frequency path matching devices.

Specifically, the motherboard 11 includes a reference layer 111, a semi-cured dielectric layer 112, and a pad 113, where the reference layer 111 may be a ground layer or a power supply layer; a semi-cured dielectric layer 112 is disposed on the reference layer 111; the pad 113 is disposed on the semi-cured dielectric layer 112 and used for soldering components and rf signal lines. Optionally, in the embodiment of the present invention, the motherboard 11 is a Printed Circuit Board (PCB).

The rf path matching device includes, but is not limited to, an antenna dome, at least one Amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM) card, an IC chip, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like, and is soldered to the soldering pad 113.

Please refer to fig. 2, which is a schematic diagram of traces of the rf signal line set according to the present embodiment. The rf signal line group includes at least two rf signal lines 131, each of the rf signal lines 131 includes a first connection end and a second connection end, the first connection ends of the rf signal lines 131 are electrically connected to each other, the second connection ends of the rf signal lines 131 are electrically connected to each other in the same rf signal line group, two ends of the rf signal line group are respectively soldered to different pads 113 of the motherboard 11, and two ends of the rf signal line group are respectively electrically connected to the rf path matching device soldered to the same pad 113, that is, the rf signal line group is soldered between two different rf path matching devices. The cross section of the radio frequency signal line 131 is a trapezoid with a narrow top and a wide bottom, wherein the edge of the cross section in contact with the semi-curing dielectric layer 112 of the motherboard 11 is a first edge of the radio frequency signal line 131, the edge of the cross section opposite to the first edge is a second edge of the radio frequency signal line 131, and the widths of the first edge and the second edge of the radio frequency signal line 131 will affect the impedance of the radio frequency signal line group. In addition, the distance between the rf signal lines 131 in the same rf signal line group will also affect the impedance of the rf signal line group, so that the impedance of the rf signal line group can also meet the design requirement by adjusting the distance between the rf signal lines 131.

In an exemplary implementation, the thickness of the semi-cured dielectric layer 112 of the motherboard 11 is about 45 micrometers, the height of the cross section of the rf signal line 131 is about 27 micrometers, the dielectric constant of the semi-cured dielectric is 3.8, two rf signal lines 131 are included in each rf signal line group, the first edge width of the cross section of each rf signal line 131 is set to 190 micrometers, the second edge width is set to 180 micrometers, and the distance between the rf signal lines 131 is set to 50 micrometers, under the condition that the impedance of the rf signal line group can reach 50 ohms.

In the above embodiment, the rf path matching device and the rf signal line group form an antenna path on the motherboard 11, in the rf signal line group, two ends of each rf signal line 131 are connected, which is equivalent to a parallel resistor, and the reciprocal of the impedance of the rf signal line group is equal to the reciprocal sum of the impedances of the rf signal lines. In a specific implementation, the antenna path formed by the radio frequency path matching device and the radio frequency signal line group on the main board 11 may be a diversity antenna path, a GPS antenna path, or a WIFI antenna path.

Compared with the prior art, when the radio frequency signal device 21 of the invention transmits the radio frequency signal line at a high speed, the width of the radio frequency signal line can meet the performance requirement of the radio frequency signal line, the line loss generated when the radio frequency signal device 21 transmits the signal is small, and the signal waveform is high in quality. And the requirement on the production process is low, and the mass production is easy.

An embodiment of the present invention further provides a terminal, please refer to fig. 3, which is a schematic structural diagram of a terminal according to an embodiment of the present invention, where the terminal may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and specifically: as shown in fig. 3, the terminal may include components such as a radio frequency signal device 21, a memory 22 including one or more computer-readable storage media, an input unit 23, a display unit 24, a sensor 25, an audio circuit 26, a Wireless Fidelity (Wi-Fi) module 27, a processor 28 including one or more processing cores, and a power supply 29. Those skilled in the art will appreciate that the terminal structure shown in fig. 3 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The radio frequency signal device 21 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, receives downlink information of a base station and then sends the received downlink information to one or more processors 28 for processing; in addition, data relating to uplink is transmitted to the base station. In addition, the radio frequency signal device 21 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), etc. Specifically, in the terminal embodiment, the radio frequency signal device 21 is the same as the radio frequency signal device 21 of the above device embodiment, and is not described herein again.

The memory 22 may be used to store software programs and modules, and the processor 28 executes various functional applications and data processing by executing the software programs and modules stored in the memory 22. The memory 22 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, application programs (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the terminal, etc. Further, the memory 22 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, the memory 22 may also include a memory controller to provide access to the memory 22 by the processor 28 and the input unit 23.

The input unit 23 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, in one particular embodiment, the input unit 23 may include a touch-sensitive surface as well as other input devices. The touch-sensitive surface, also referred to as a touch display screen or a touch pad, may collect touch operations by a user (e.g., operations by a user on or near the touch-sensitive surface using a finger, a stylus, or any other suitable object or attachment) thereon or nearby, and drive the corresponding connection device according to a predetermined program. Alternatively, the touch sensitive surface may comprise two parts, a touch detection means and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device and converts it to touch point coordinates, which are provided to processor 28 and can receive commands from processor 28 and execute them. In addition, touch sensitive surfaces may be implemented using various types of resistive, capacitive, infrared, and surface acoustic waves. The input unit 23 may include other input devices in addition to the touch-sensitive surface. In particular, other input devices may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 24 may be used to display information input by or provided to the user and various graphical user interfaces of the terminal, which may be made up of graphics, text, icons, video, and any combination thereof. The Display unit 24 may include a Display screen, and optionally, the Display screen may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch-sensitive surface may overlay the display screen, and when a touch operation is detected on or near the touch-sensitive surface, the touch operation is transmitted to the processor 28 to determine the type of touch event, and the processor 28 then provides a corresponding visual output on the display screen according to the type of touch event.

The terminal may also include at least one sensor 25, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts brightness of the display screen according to brightness of ambient light, and a proximity sensor that turns off the display screen and/or backlight when the terminal moves to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration (generally three axes) at each position, can detect the magnitude and position of gravity when the mobile phone is stationary, and can be used for applications of recognizing the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping) and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured in the terminal, detailed description is omitted here.

An audio circuit 26, a speaker, and a microphone may provide an audio interface between the user and the terminal. The audio circuit 26 may transmit the electrical signal converted from the received audio data to a speaker, and convert the electrical signal into an audio signal for output; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is received by the audio circuit 26 and converted into audio data, which is then processed by the audio data output processor 28, and then passed through the radio frequency signal device 21 to be sent to, for example, another terminal, or the audio data is output to the memory 22 for further processing. The audio circuit 26 may also include an earbud jack to provide peripheral headset communication with the terminal. Wi-Fi belongs to short-distance wireless transmission technology, and the terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the Wi-Fi module 27, and provides wireless broadband internet access for the user. Although fig. 3 shows the Wi-Fi module 27, it is understood that it does not belong to the essential constitution of the terminal, and can be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 28 is a control center of the terminal, connects various parts of the entire handset by various interfaces and lines, performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 22 and calling data stored in the memory 22, thereby performing overall monitoring of the handset. Alternatively, processor 28 may include one or more processing cores; preferably, the processor 28 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 28. Specifically, in the embodiment of the present invention, after receiving a control instruction input by a user, the processor controls a driving device in the image capturing device to execute a corresponding operation.

The terminal also includes a power supply 29 (e.g., a battery) for powering the various components, which may preferably be logically connected to the processor 28 via a power management system that provides management of charging, discharging, and power consumption. The power supply 29 may also include any component of one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.

Although not shown, the terminal may further include a camera, a bluetooth module, and the like, which will not be described herein. Specifically, in this embodiment, the processor 28 in the terminal loads the executable file corresponding to the process of one or more application programs into the memory 22 according to the following instructions, and the processor 28 runs the application programs stored in the memory 22, thereby implementing various functions.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. The embodiments described above are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, those skilled in the art can obtain all other embodiments without creative efforts, and the design consistent with the embodiments of the present invention except the design mentioned in the embodiments of the present invention is within the protection scope of the present invention.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, to those skilled in the art, changes and modifications may be made without departing from the spirit of the present invention, and it is intended that the present invention encompass such changes and modifications.

Claims

1. A radio frequency signal device, characterized by: the antenna comprises a plurality of radio frequency path matching devices and a plurality of radio frequency signal line groups, wherein the radio frequency path matching devices are electrically connected through the radio frequency signal line groups in sequence to form an antenna communication data transmission path, each radio frequency signal line group comprises at least two radio frequency signal lines, each radio frequency signal line comprises a first connecting end and a second connecting end, the first connecting ends of the radio frequency signal lines are connected with each other, and the second connecting ends of the radio frequency signal lines are connected with each other.

2. The apparatus of claim 1, wherein: the radio frequency circuit matching device and the radio frequency signal wire are welded on the mainboard, the edge of the cross section of the radio frequency signal wire in contact with the mainboard is a first edge, the edge of the cross section opposite to the first edge is a second edge, and the width of the first edge is greater than that of the second edge.

3. The apparatus of claim 1, wherein: the radio frequency path matching device comprises an antenna, an antenna elastic sheet, at least one amplifier, a tuner, one or more oscillators, a user identity module card, an IC chip, a transceiver, a coupler, a low noise amplifier and a duplexer which are connected through the radio frequency signal line group.

4. The apparatus of claim 2, wherein: the main board comprises a reference layer, a semi-solidified dielectric layer and a bonding pad, wherein the semi-solidified dielectric layer is arranged on the reference layer, the bonding pad is arranged on the semi-solidified dielectric layer, and the radio frequency path matching device and the radio frequency signal line group are welded on the semi-solidified dielectric layer through the bonding pad.

5. The apparatus of claim 4, wherein: the thickness of the semi-solidified dielectric layer is 45 micrometers, the height of the cross section of the radio frequency signal line is 27 micrometers, the width of a first edge of the cross section of the radio frequency signal line is 180 micrometers, the width of a second edge of the cross section of the radio frequency signal line is 190 micrometers, and the line spacing between the radio frequency signal lines in the same radio frequency signal line group is 50 micrometers.

6. A mobile terminal, characterized by: the radio frequency signal device comprises a plurality of radio frequency channel matching devices and a plurality of radio frequency signal line groups, wherein the radio frequency channel matching devices are sequentially and electrically connected through the radio frequency signal line groups to form an antenna communication data transmission channel, each radio frequency signal line group comprises at least two radio frequency signal lines, each radio frequency signal line comprises a first connecting end and a second connecting end, the first connecting ends of the radio frequency signal lines are connected with each other, and the second connecting ends of the radio frequency signal lines are connected with each other.

7. The mobile terminal of claim 6, wherein: the radio frequency signal device further comprises a main board, the radio frequency path matching device and the radio frequency signal wire are welded on the main board, the edge of the cross section, contacting the main board, of the radio frequency signal wire is a first edge, the edge of the cross section, opposite to the first edge, of the radio frequency signal wire is a second edge, and the width of the first edge is larger than that of the second edge.

8. The mobile terminal of claim 6, wherein: the radio frequency path matching device comprises an antenna, an antenna elastic sheet, at least one amplifier, a tuner, one or more oscillators, a user identity module card, an IC chip, a transceiver, a coupler, a low noise amplifier and a duplexer which are connected through the radio frequency signal line group.

9. The mobile terminal of claim 7, wherein: the main board comprises a reference layer, a semi-solidified dielectric layer and a pad, wherein the semi-solidified dielectric layer is arranged on the reference layer, the pad is arranged on the semi-solidified dielectric layer, and the radio frequency channel matching device and the radio frequency signal line group are welded on the semi-solidified dielectric layer through the pad.

10. The mobile terminal of claim 9, wherein: the thickness of the semi-solidified dielectric layer is 45 micrometers, the thickness of the radio frequency signal line is 27 micrometers, the width of a first edge of the radio frequency signal line is 180 micrometers, the width of a second edge of the radio frequency signal line is 190 micrometers, and the distance between the radio frequency signal lines is 50 micrometers.