CN217445341U

CN217445341U - Radio frequency front-end device, radio frequency front-end circuit and intelligent terminal

Info

Publication number: CN217445341U
Application number: CN202221423739.XU
Authority: CN
Inventors: 宋祖防
Original assignee: Shenzhen Taihengnuo Technology Co ltd
Current assignee: Shenzhen Taihengnuo Technology Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-09-16
Anticipated expiration: 2032-06-08

Abstract

The application discloses radio frequency front-end device, radio frequency front-end circuit and intelligent terminal, this radio frequency front-end device is provided with: at least one first transmitting port for accessing a first radio frequency signal; at least one second transmitting port for accessing a second radio frequency signal; at least one antenna port for accessing an antenna; the first radio frequency signal processing circuit is connected with the first transmitting port and is used for outputting the first radio frequency signal after signal processing is carried out on the first radio frequency signal; and the switch circuit is used for conducting the radio frequency paths between the first radio frequency signal processing circuit and the antenna port and between the second transmitting port and the antenna port. The method and the device are beneficial to improving the integration level of the radio frequency front-end device, reducing the occupied area of the radio frequency front-end device on the PCB and reducing the loss between the radio frequency front-end circuit devices.

Description

Radio frequency front-end device, radio frequency front-end circuit and intelligent terminal

Technical Field

The present application relates to the field of radio frequency technologies, and in particular, to a radio frequency front end device, a radio frequency front end circuit, and an intelligent terminal.

Background

In current intelligent terminals such as mobile phones, there are a large number of different types of communication systems, including 2G/3G/4G/5G, and so on.

In the course of conceiving and implementing the present application, the inventors found that at least the following problems existed:

in the radio frequency front-end circuit, discrete components are mostly adopted for realization, so that the spatial layout and wiring of a main board PCB are very tense, and the product performance is reduced.

The foregoing description is provided for general background information and is not admitted to be prior art.

SUMMERY OF THE UTILITY MODEL

The main purpose of this application is to provide a radio frequency front end device, radio frequency front end circuit and intelligent terminal, aims at improving the integrated level of radio frequency front end device, reduces the area occupied by radio frequency front end device on the PCB board, reduces the loss between radio frequency front end circuit device.

In order to achieve the above object, the present application proposes a radio frequency front end device, which is provided with:

at least one first transmitting port for accessing a first radio frequency signal;

at least one second transmitting port for accessing a second radio frequency signal;

at least one antenna port for accessing an antenna;

the first radio frequency signal processing circuit is connected with the first transmitting port and is used for outputting the first radio frequency signal after signal processing is carried out on the first radio frequency signal;

and the switch circuit is used for conducting radio frequency paths between the first radio frequency signal processing circuit and the antenna port and between the second transmitting port and the antenna port.

Optionally, the communication system of the first radio frequency signal is at least a next-generation communication system of the second radio frequency signal.

Optionally, the first radio frequency signal processing circuit includes:

the first radio frequency power amplifier is connected with the first transmitting port and used for receiving and/or amplifying the first radio frequency signal and outputting the first radio frequency signal to the switch circuit.

Optionally, the first radio frequency signal processing circuit further includes:

at least one filter disposed in series between the first radio frequency power amplifier and the switching circuit;

and/or, at least one multiplexer, the multiplexer sets up in series between first radio frequency power amplifier and the switching circuit.

Optionally, the first radio frequency signal is one or more of 3G, 4G, and 5G;

and/or the second radio frequency signal is a 2G radio frequency signal.

Optionally, the number of the first transmit ports is one, and the first transmit ports are used for accessing signals of an LB frequency band, an MB frequency band, an HB frequency band, or one of the LB frequency band, the MB frequency band and the HB frequency band;

or the number of the first transmitting ports is multiple, and the multiple first transmitting ports are used for accessing an LB frequency band, an MB frequency band, an HB frequency band and at least two frequency bands of the LB frequency band, the MB frequency band and the HB frequency band.

Optionally, the switching circuit comprises a single-pole, six-throw integrated radio frequency switch chip.

Optionally, the radio frequency front-end device further includes:

the first radio frequency signal processing circuit and the switch circuit are arranged on the substrate;

and the packaging body covers the substrate and is used for packaging the first radio frequency signal processing circuit and the switch circuit.

The present application further provides an rf front-end circuit, including the rf front-end device as described in any of the above.

Optionally, the rf front-end circuit further includes:

and the second radio frequency power amplifier is connected with a second transmitting port of the radio frequency front-end device, is used for receiving and/or amplifying the second radio frequency signal, and outputs the second radio frequency signal to the switch circuit through the second transmitting port.

Optionally, the rf front-end circuit further includes:

and the transceiver is respectively connected with the second radio frequency power amplifier and the first transmitting port of the radio frequency front-end device.

The application also provides an intelligent terminal, which comprises the radio frequency front-end device;

and/or include radio frequency front end circuitry as described in any of the above.

This application will be used for handling first radio frequency signal's first radio frequency signal processing circuit and switch circuit integration in the radio frequency front end device, form a module, can reduce the loss between first radio frequency signal processing circuit and the switch circuit, reduce the goods of furniture for display rather than for use area, be favorable to improving first radio frequency conductivity, can also reduce PCB goods of furniture for display rather than for use area simultaneously, be favorable to intelligent terminal to light development, and simultaneously, the PCB board overall arrangement of intelligent terminal automatically controlled board can also be simplified, the spatial distance between the device of increase radio frequency front end circuit, can reduce the signal interference between the device. According to the method and the device, the radio frequency amplifier used for processing the second radio frequency signal of the previous generation communication system is independently removed, the first radio frequency processing circuit and the switch circuit of the first radio frequency signal of at least the next generation communication system are integrated in the radio frequency front-end device, the switch circuit does not need to be additionally arranged, the network quitting trend of the previous generation communication system can be adapted, the hardware cost is favorably reduced, and the universality of the radio frequency front-end device is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic hardware structure diagram of a mobile terminal implementing various embodiments of the present application;

fig. 2 is a communication network system architecture diagram according to an embodiment of the present application;

FIG. 3 is a schematic circuit diagram according to a first embodiment of the present application;

FIG. 4 is a circuit diagram illustrating a second embodiment of the present application;

fig. 5 is a schematic circuit structure diagram according to three embodiments of the present application.

The implementation, functional features and advantages of the object of the present application will be further explained with reference to the embodiments, and with reference to the accompanying drawings. With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the recitation of an element by the phrase "comprising an … …" does not exclude the presence of additional like elements in the process, method, article, or apparatus that comprises the element, and further, where similarly-named elements, features, or elements in different embodiments of the disclosure may have the same meaning, or may have different meanings, that particular meaning should be determined by their interpretation in the embodiment or further by context with the embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or," "and/or," "including at least one of the following," and the like, as used herein, are to be construed as inclusive or mean any one or any combination. For example, "includes at least one of: a. B, C "means" any of the following: a; b; c; a and B; a and C; b and C; a and B and C ", again for example," A, B or C "or" A, B and/or C "means" any of the following: a; b; c; a and B; a and C; b and C; a and B and C'. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present application, and have no specific meaning in themselves. Thus, "module", "component" or "unit" may be used mixedly.

The smart terminal may be implemented in various forms. For example, the smart terminal described in the present application may include smart terminals such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and fixed terminals such as a Digital TV, a desktop computer, and the like.

The following description will be given taking a mobile terminal as an example, and it will be understood by those skilled in the art that the configuration according to the embodiment of the present application can be applied to a fixed type terminal in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present application, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, and that a mobile terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 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 GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex-Long Term Evolution), TDD-LTE (Time Division duplex-Long Term Evolution, Time Division Long Term Evolution), 5G, and so on.

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor that may adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 1061 and/or the backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a 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 fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Alternatively, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Optionally, the touch detection device detects a touch orientation of a user, detects a signal caused by a touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited thereto.

Alternatively, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a program storage area and a data storage area, and optionally, the program storage area may store an operating system, an application program (such as a sound playing function, an image playing function, and the like) required by 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 cellular phone, and the like. Further, the memory 109 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.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor, optionally, the application processor mainly handles operating systems, user interfaces, application programs, etc., and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

In order to facilitate understanding of the embodiments of the present application, a communication network system on which the mobile terminal of the present application is based is described below.

Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present disclosure, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.

Optionally, the UE201 may be the terminal 100 described above, and is not described herein again.

The E-UTRAN202 includes eNodeB2011 and other enodebs 2012, among others. Alternatively, the eNodeB2011 may be connected with other enodebs 2012 over a backhaul (e.g., X2 interface), the eNodeB2011 is connected to the EPC203, and the eNodeB2011 may provide access for the UE201 to the EPC 203.

The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. Optionally, the MME2031 is a control node that handles signaling between the UE201 and the EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.

Although the LTE system is described as an example, it should be understood by those skilled in the art that the present application is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems (e.g. 5G), and the like.

Based on the above mobile terminal hardware structure and communication network system, various embodiments of the present application are provided.

First embodiment

The present application proposes a radio frequency front end device, which can be applied to the mobile terminal of the above embodiments. Optionally, the mobile terminal may be a processor, a tablet, a smart wearable device, and the like, and the mobile terminal includes a plurality of radio frequency antennas and a wireless antenna to implement a communication function of the mobile terminal, and the plurality of radio frequency antennas further include a main radio frequency antenna and a diversity radio frequency antenna. Optionally, the main antenna is responsible for transmitting and receiving radio frequency signals, the diversity antenna only receives and does not transmit radio frequency signals, and the main chip of the mobile terminal combines signals received from the two antennas, so as to obtain diversity gain. The mobile terminal generally supports multiple communication systems, and forms a situation of coexistence of 2G/3G/4G, such as a 5G communication system (5GNR, fifth generation mobile communication technology), an LTE communication system (Long Term Evolution, fourth generation mobile communication technology), a 3G communication system, and a 2G communication system. The LTE communication system is a 4G communication system. The mobile terminal can usually support 2/3/4/5G communication at the same time, the mobile terminal can be used as an 2/3/4/5G communication device, and when the 2/3/4/5G communication device communicates with a base station or other 2/3/4/5G communication devices, the 2/3/4/5G communication device needs to transmit an uplink signal to the outside (the base station or other 2/3/4/5G communication devices) and receive a downlink signal from the outside (the base station or other 2/3/4/5G communication devices), so as to realize data interaction with the base station or other 2/3/4/5G communication devices. It can be understood that as technology develops, more 3/4/5G communication technology and even 6G communication technology are increasingly used, and 2G communication technology gradually drops out of the mainstream and is replaced by 3/4/5G communication technology. However, in the related art, the rf front-end device in the mobile terminal is generally integrated with a related device for processing a 2G rf signal, and when the 2G communication technology exits the network, the rf front-end device in the mobile terminal is discarded with respect to the related device of the 2G communication technology, which inevitably causes a waste of resources. And the radio frequency front end device goods of furniture for display rather than for use area is big, walks that the line length loss is big, and the hardware can't fall originally after 2G moves back the net.

Referring to fig. 3, to solve the above problem, the present application provides an rf front-end device 300, in an embodiment of the present application, the rf front-end device 300 includes:

at least one first transmitting port CN1 for accessing the first radio frequency signal;

at least one second transmitting port CN2 for accessing the second radio frequency signal;

at least one antenna port ANT1 for accessing an antenna; the rf front-end device 300 includes:

the first radio frequency signal processing circuit 10 is connected to the first transmission port CN1, and the first radio frequency signal processing circuit 10 is configured to perform signal processing on the first radio frequency signal and output the processed first radio frequency signal;

a switch circuit 20, configured to turn on radio frequency paths between the first radio frequency signal processing circuit 10, the second transmission port CN2, and the antenna port ANT1, respectively; alternatively,

the communication system of the first radio frequency signal is at least a next generation communication system of the second radio frequency signal.

Optionally, a plurality of first terminals of the switch circuit 20 are respectively connected to the output terminal of the first radio frequency signal processing circuit 10 and the second transmitting port CN2, and a second terminal of the switch circuit 20 is connected to the antenna port ANT 1; the switch circuit 20 is configured to selectively turn on a radio frequency path between the first radio frequency signal processing circuit 10 and the antenna port ANT1, or turn on a radio frequency path between the second transmitting port CN2 and the antenna port ANT 1.

In this embodiment, the first transmitting port CN1 may be used for connecting with the rf transceiver 400, and the first rf signal processing circuit 10 amplifies, filters, and switches transmission/reception control of the first rf signal output by the rf transceiver 400. The antenna port ANT1 may be used to connect to an antenna, output a first rf signal processed by the first rf signal processing circuit 10 in the rf front-end device 300 to the antenna, and transmit each low-frequency band signal received by the antenna to the rf front-end device 300; optionally, the radio frequency signal receiving and transmitting may be implemented through the switch circuit 20, that is, the switch circuit 20 is a path for implementing signal receiving or a path for implementing signal transmitting, and the control logics of the signals TX (transmission)/RX (reception) are the same, and the corresponding radio frequency channels are communicated by controlling the switch circuit 20, so that the corresponding paths can be switched to implement signal receiving/transmitting, and the control process of signal receiving may refer to the process of signal transmitting. Optionally, the rf front-end device 300 may further include a receiving port and an rf signal processing circuit, where the rf signal processing circuit may be connected to the antenna through an antenna port ANT1, so as to receive the rf signal received by the antenna, process the received rf signal, and output the processed rf signal to the receiving port.

The communication systems of the first radio frequency signal and the second radio frequency signal are different, optionally, the first radio frequency signal may be a generation later than the communication system of the second radio frequency signal, or may be a generation later than the communication system of the second radio frequency signal, and optionally, the transmission rate of the first radio frequency signal is greater than the transmission rate of the second radio frequency signal. Optionally, the first radio frequency signal is one or more of 3G, 4G, and 5G; and/or the second radio frequency signal is a 2G radio frequency signal. The first radio frequency signal may also be a 6G radio frequency signal, and the second radio frequency signal may be a 2G radio frequency signal or a 3G radio frequency signal.

Alternatively, the switching circuit 20 may be a single-pole, multi-throw switch, a single-pole, double-throw switch, or a single-pole, triple-throw switch. Alternatively, the switching circuit 20 may be implemented using a single-pole, six-throw integrated radio frequency switch chip. The switching circuit 20 may be connected to a processor in the mobile terminal when the rf front-end device 300 is applied to the mobile terminal, and the switching circuit 20 is controlled by the processor. When the switch circuit 20 is turned on, the corresponding communication system may be selected to transmit or receive the radio frequency signal. When the switch circuit 20 is configured to connect the radio frequency path between the first radio frequency signal processing circuit 10 and the antenna port ANT1, the current communication system of the mobile terminal may be the latest generation communication system supported by the mobile terminal, and when the switch circuit 20 is configured to connect the radio frequency path between the second transmitting port CN2 and the antenna port ANT1, the current communication system of the mobile terminal may be the latest generation communication system supported by the mobile terminal.

Alternatively, the switch circuit 20 may take the radio frequency path between the first radio frequency signal processing circuit 10 and the antenna port ANT1 to be turned on as priority, and select the radio frequency path between the second transmission port CN2 and the antenna port ANT1 when the signal quality is degraded. For example, when there are fewer base stations around the mobile terminal and signals are unstable, the mobile terminal may be switched from the radio frequency path between the first radio frequency signal processing circuit 10 and the antenna port ANT1 to the radio frequency path between the second transmitting port CN2 and the antenna port ANT1 through the switch circuit 20, that is, the current communication system falls back, and the communication system of the first radio frequency signal is adjusted to the communication system of the second radio frequency signal. For example, when the current communication system of the mobile terminal is 4G, the current communication system falls back from 4G to 2G; or, when the current communication system of the mobile terminal is 5G, the current communication system falls back to 2G from 5G. When there are many base stations around the mobile terminal and the signal is recovered stably, the mobile terminal may be switched to the radio frequency path between the first radio frequency signal processing circuit 10 and the antenna port ANT1 by the switch circuit 20 by turning on the radio frequency path between the second transmitting port CN2 and the antenna port ANT1 through the switch circuit 20, that is, the current communication system is recovered, and the communication system of the second radio frequency signal is adjusted to the communication system of the first radio frequency signal. For example, when the current communication system of the mobile terminal is 2G, the current communication system is upgraded from 2G to 4G; or, when the current communication system of the mobile terminal is 5G, the current communication system is upgraded from 5G to 2G.

Alternatively, when the mobile terminal uses only the communication system of the second rf signal, the switch circuit 20 may turn on the rf path between the first rf signal processing circuit 10 and the antenna port ANT1 as a normally-on state.

Based on this, compare in adopting discrete switching device, processing circuit carries out the scheme that radio frequency signal received and dispatched, this application will be used for handling first radio frequency signal processing circuit 10 and the switching circuit 20 integration of first radio frequency signal in radio frequency front end device 300, form a module, can reduce the loss between first radio frequency signal processing circuit 10 and the switching circuit 20, reduce the goods of furniture for display rather than for use area, be favorable to improving first radio frequency conductivity, can also reduce PCB goods of furniture for display rather than for use area simultaneously, be favorable to mobile terminal to light and convenient development. Meanwhile, the PCB layout of the mobile terminal electric control board can be simplified, the space distance between devices of the radio frequency front-end circuit is increased, and the signal interference between the devices can be reduced. The radio frequency amplifier for processing the second radio frequency signal of the previous generation communication system is independently removed, the first radio frequency processing circuit and the switch circuit 20 of the first radio frequency signal of at least the next generation communication system are integrated in the radio frequency front-end device 300, the switch circuit 20 does not need to be additionally arranged, the network quitting trend of the previous generation communication system can be adapted, the hardware cost is favorably reduced, and the universality of the radio frequency front-end device 300 is improved.

Second embodiment

The basic structure and principle of the second embodiment and the technical effects thereof are the same as those of the first embodiment, and for the sake of brief description, the corresponding contents of the first embodiment may be referred to where this embodiment is not mentioned. Referring to fig. 4, compared with the first embodiment, the difference between the present embodiment and the first embodiment is that the first rf signal processing circuit 10 of the present embodiment includes:

the first rf power amplifier 11 is connected to the first transmitting port CN1, and the first rf power amplifier 11 is configured to receive and/or amplify the first rf signal and output the first rf signal to the switch circuit 20.

In this embodiment, the communication system of the first radio frequency signal may include several generations of communication systems, for example, 3G/4G/5G, and the frequencies of the 3G/4G/5G radio frequency signals are the same, and in this embodiment, the first radio frequency signal may be combined into one radio frequency power amplifier. The first rf power amplifier 11 may perform power amplification processing on the rf signal received through the first transmitting port CN1, and further transmit the rf signal processed by the first rf power amplifier 11 to the antenna interface through the switch circuit 20.

Optionally, the first radio frequency signal processing circuit 10 further includes:

at least one filter 12, the filter 12 being arranged in series between the first radio frequency power amplifier 11 and the switch circuit 20;

and/or, at least one multiplexer 13, where the multiplexer 13 is serially disposed between the first rf power amplifier 11 and the switch circuit 20.

In this embodiment, the number of the filters 12 may be one, or may be multiple, for example, two, the filters 12 are used for filtering the radio frequency signals, when the filters 12 are multiple, the frequency bands of the radio frequency signals output by the filters 12 may be set to be different, and radio frequency paths formed by the filters 12 and the switch circuit 20 are independent of each other and do not overlap with each other, and the filters 12 may retain signals in a specific frequency band and filter out signals unnecessary for interference. The multiplexer 13 may be selected as a diplexer, which may be composed of two sets of band-stop filters 12 of different frequencies to achieve isolation of the transmit and receive signals. In this embodiment, the discrete filter 12, the duplexer, the rf power amplifier, and the switch circuit 20 are integrated in the rf front-end device 300 to form an integrated module, which can shorten the distance between the devices, and is beneficial to reducing the loss between the first rf signal processing circuit 10 and the switch circuit 20. Integrate each device in a module among the radio frequency front end device 300, can reduce the goods of furniture for display rather than for use area, be favorable to improving first radio frequency conductivity, can also reduce PCB goods of furniture for display rather than for use area simultaneously, be favorable to mobile terminal to the development of portability.

Optionally, the number of the first transmission ports CN1 is one, and the first transmission port CN1 is used for accessing a signal in one of an LB frequency band, an MB frequency band, and an HB frequency band;

the number of the first transmission ports CN1 is multiple, and the multiple first transmission ports CN1 are used for accessing at least two frequency bands among an LB frequency band, an MB frequency band, and an HB frequency band.

In this embodiment, the LB frequency band signal is a preset low frequency band signal, the MB frequency band signal is a preset high frequency band signal, and the HB frequency band signal is a preset high frequency band signal, and the first radio frequency signal processing circuit 10 may receive any one or more combinations of the LB frequency band, the MB frequency band, and the HB frequency band. The network signal corresponding to the first radio frequency signal may be a 3G/4G/5G full band signal, or the network signal corresponding to the first radio frequency signal may be a 3G/4G full band signal, or may be a partial band range signal of 5G.

Optionally, the rf front-end device 300 further includes:

the first radio frequency signal processing circuit 10 and the switch circuit 20 are arranged on the substrate;

and the packaging body is covered on the substrate and is used for packaging the first radio frequency signal processing circuit 10 and the switch circuit 20.

In this embodiment, the substrate may be a PCB substrate, a silicon substrate, an aluminum substrate, or the like, and this embodiment may be selected as the PCB substrate, the PCB substrate may be a double-sided board, or a single-sided board, when the single-sided board is set, each device in the radio frequency front end device 300 is disposed on the same surface of the PCB substrate, when the double-sided board is set, the radio frequency front end device 300 may be separately disposed on two opposite surfaces of the PCB substrate, and the devices having electrical connection may be electrically connected through the conductive through hole. The PCB substrate is provided with a circuit wiring layer, the metal wiring layer covers the surface of the PCB substrate and can be used for fixing electrical connection among all devices, the PCB substrate is further provided with a plurality of external connection areas, and the transmitting port, the antenna port ANT1 and the like can be electrically connected with the external connection areas. When the packaging body is manufactured, a plastic packaging process can be adopted, and materials such as plastic, EMC (electro magnetic compatibility), molding dry film and the like can be selected for realization. The package body can package the electronic components in the rf front-end device 300, so that the rf front-end device 300 forms a module to reduce the overall volume of the rf front-end circuit.

Third embodiment

The present application further proposes an rf front-end circuit comprising an rf front-end device 300 as described above.

The detailed structure of the rf front-end device 300 can refer to the above embodiments, and is not described herein; it can be understood that, since the rf front-end circuit in the embodiment of the present application includes the rf front-end device 300 in any embodiment, the embodiment of the present application includes all technical solutions of all embodiments of the rf front-end device 300, and the achieved technical effects are also completely the same, and are not described herein again.

Referring to fig. 5, optionally, the rf front-end circuit further includes:

the second rf power amplifier 400 is connected to the second transmitting port CN2 of the rf front-end device 300, and is configured to receive and/or amplify the second rf signal, and output the second rf signal to the switch circuit 20 through the second transmitting port CN 2.

In this embodiment, in the communication system of the second radio frequency signal, the second radio frequency power amplifier 400 may perform power amplification on the received radio frequency signal and output the radio frequency signal to the second transmitting port CN2 of the radio frequency front end device 300, so as to transmit the radio frequency signal processed by the two first radio frequency power amplifiers 11 to the antenna interface through the switch circuit 20. Alternatively, the number of the second transmission ports CN2 may be multiple, and the second rf power amplifier 400 may amplify the 2G LB rf signal and the 2G HB rf signal.

Optionally, the rf front-end circuit further includes:

the transceiver 400 is connected to the second rf power amplifier 400 and the first transmitting port CN1 of the rf front-end device 300, respectively.

In this embodiment, the transceiver 400 may be configured to transmit radio frequency signals and wireless signals, the transceiver 400 may be connected to a processor of the mobile terminal, the transceiver 400 outputs received network signals to the processor, so that the processor may communicate with an external terminal, and the processor may further identify the type of the network signals according to the network signals; the processor generates or determines control information for controlling the switching circuit 20 according to the type of network signal. Optionally, the control information is transmitted to the switch circuit 20, and the switch circuit 20 switches its connection state according to the control information to connect the antenna interface to the second rf interface or to connect to the first rf processing circuit in the rf front-end device 300. Also, the transceiver 400 may implement carrier aggregation of multiple signals. The transceiver 400 may have a plurality of rf transmitting ports and a plurality of rf receiving ports, which are respectively connected to the rf front-end device 300 and the second rf power amplifier 400, so that the transceiver 400 can transmit signals of different frequency bands and can also receive signals of different frequency bands.

The application also provides an intelligent terminal, which comprises the radio frequency front-end device in any embodiment;

and/or comprising a radio frequency front end circuit as described in any of the above embodiments.

The detailed structures of the rf front-end device and the rf front-end circuit may refer to the above embodiments, and are not described herein again; it can be understood that, because the mobile terminal in the embodiment of the present application includes the rf front-end device and the rf front-end circuit in any embodiment described above, the embodiment of the present application includes all technical solutions of all embodiments of the rf front-end module described above, and the achieved technical effects are also completely the same, and are not described herein again.

The above-mentioned serial numbers of the embodiments of the present application are merely for description, and do not represent the advantages and disadvantages of the embodiments.

In the present application, the same or similar term concepts, technical solutions and/or application scenario descriptions will be generally described only in detail at the first occurrence, and when the description is repeated later, the detailed description will not be repeated in general for brevity, and when understanding the technical solutions and the like of the present application, reference may be made to the related detailed description before the description for the same or similar term concepts, technical solutions and/or application scenario descriptions and the like which are not described in detail later.

In the present application, each embodiment is described with emphasis, and reference may be made to the description of other embodiments for parts that are not described or illustrated in any embodiment.

The technical features of the technical solution of the present application may be arbitrarily combined, and for brevity of description, all possible combinations of the technical features in the embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present application should be considered as being described in the present application.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, a controlled terminal, or a network device) to execute the method of each embodiment of the present application.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.

Claims

1. A radio frequency front end device, characterized in that the radio frequency front end device is provided with:

at least one antenna port for accessing an antenna;

2. The radio frequency front end device of claim 1, wherein the first radio frequency signal processing circuit comprises:

3. The radio frequency front end device of claim 2, wherein the first radio frequency signal processing circuit further comprises:

4. The radio frequency front-end device according to any of claims 1 to 3, wherein the first radio frequency signal is one or more of 3G, 4G, 5G;

and/or the second radio frequency signal is a 2G radio frequency signal.

5. The radio frequency front-end device according to any one of claims 1 to 3, wherein the number of the first transmission ports is one, and the first transmission ports are used for accessing signals of an LB frequency band, an MB frequency band, an HB frequency band, and one of the three frequency bands;

6. The radio frequency front end device of any one of claims 1 to 3, further comprising:

7. A radio frequency front end circuit comprising the radio frequency front end device of any one of claims 1 to 6.

8. The rf front-end circuit of claim 7, further comprising:

9. The rf front-end circuit of claim 8, further comprising:

10. An intelligent terminal, characterized in that it comprises a radio frequency front-end device according to any one of claims 1 to 6;

and/or comprising a radio frequency front end circuit as claimed in any one of claims 7 to 9.