Radio frequency circuit and intelligent terminal
By using a combination of single-pole multi-throw switches and jumper components in the RF circuit, the problem of port redundancy in the RF front-end module is solved, enabling flexible frequency band switching and cost savings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI TRANSSION CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-07-14
AI Technical Summary
In the existing RF transceiver architecture, the inconsistent frequency band requirements of different markets lead to port redundancy in the RF front-end module, resulting in resource waste and hindering cost optimization.
The system employs a combination of a first single-pole multi-throw switch and a jumper assembly. The jumper assembly enables circuit connection, allowing direct adjustment of the circuit according to frequency band requirements. This eliminates the need for an RF front-end module and a single-pole multi-throw switch, enabling flexible frequency band switching.
It effectively saves system costs, improves user experience, and can switch between different operating modes of the product according to the frequency band requirements of different regions.
Smart Images
Figure CN224503358U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of wireless radio frequency technology, specifically to a radio frequency circuit and a smart terminal. Background Technology
[0002] Radio frequency (RF) architecture is widely used in various wireless communication devices, such as mobile phones, base stations, and satellite communication systems. In mobile phones, the RF architecture ensures the transmission and reception of wireless signals, supporting functions such as calls and data transmission.
[0003] In conceiving and developing this application, the applicant discovered the following problem: Some RF transceiver architectures consist of transceivers, power amplifiers, RF filters for different frequency bands, RF front-end modules, and antennas. Generally, to save costs, different market BOMs share a single motherboard. Since different markets have different frequency band requirements, the ports of the RF front-end module (TXM) in this shared-board design become somewhat redundant (e.g., Ports 2, 4, and 6 are not used), resulting in wasted port resources and hindering cost optimization.
[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content
[0005] To alleviate the above problems, this application provides a radio frequency circuit and a smart terminal to solve the problem of resource waste in existing radio frequency front-ends and reduce system costs.
[0006] This application provides a radio frequency circuit, including an antenna, a first single-pole multi-throw switch, and a first radio frequency power amplifier; the radio frequency circuit further includes a first jumper assembly and / or a second jumper assembly;
[0007] The first output terminal of the first RF power amplifier is connected to the first terminal of the first jumper assembly, and the second terminal of the first jumper assembly is connected to the first stationary terminal of the first single-pole multi-throw switch; and / or,
[0008] The third output terminal of the first RF power amplifier is connected to the first terminal of the second jumper assembly, and the second terminal of the second jumper assembly is connected to the second stationary terminal of the first single-pole multi-throw switch.
[0009] The moving end of the first single-pole multi-throw switch is connected to the antenna.
[0010] Optionally, the radio frequency circuit further includes a second single-pole multi-throw switch;
[0011] The first output terminal of the first RF power amplifier is connected to the first stationary terminal of the second single-pole multi-throw switch; the second output terminal of the first RF power amplifier is connected to the second stationary terminal of the second single-pole multi-throw switch; the moving terminal of the second single-pole multi-throw switch is connected to the first stationary terminal of the first single-pole multi-throw switch.
[0012] The first stationary terminal of the second single-pole multi-throw switch is connected to the moving terminal of the second single-pole multi-throw switch via a first jumper assembly to keep them disconnected.
[0013] Optionally, the radio frequency circuit further includes a third single-pole multi-throw switch;
[0014] The third output terminal of the first RF power amplifier is connected to the first stationary terminal of the third single-pole multi-throw switch; the fourth output terminal of the first RF power amplifier is connected to the second stationary terminal of the third single-pole multi-throw switch; the moving terminal of the third single-pole multi-throw switch is connected to the second stationary terminal of the first single-pole multi-throw switch.
[0015] The first stationary terminal of the third single-pole multi-throw switch is connected to the moving terminal of the third single-pole multi-throw switch via a second jumper assembly to keep them disconnected.
[0016] Optionally, the radio frequency circuit further includes a first filter and / or a second filter; the first stationary terminal of the first single-pole multi-throw switch is connected to the moving terminal of the second single-pole multi-throw switch through the first filter; and / or, the second stationary terminal of the first single-pole multi-throw switch is connected to the moving terminal of the third single-pole multi-throw switch through the second filter.
[0017] Optionally, the radio frequency circuit further includes a transceiver connected to the input of the first radio frequency power amplifier to transmit and receive signals through the first radio frequency power amplifier.
[0018] Optionally, the radio frequency circuit further includes a first frequency divider, wherein the moving end of the first single-pole multi-throw switch is connected to the antenna through the first frequency divider to form a first processing path.
[0019] Optionally, the first processing path includes an FEM module; a first end of the FEM module is connected to the first frequency divider, a second end of the FEM module is connected to the transceiver, and a third end of the FEM module is connected to the moving end of the first single-pole multi-throw switch; the first processing path is configured to process a first frequency band signal.
[0020] Optionally, the radio frequency circuit further includes a second processing path, which in turn includes a low-noise amplifier, a filter, and a modem. The first frequency divider connects the modem via the low-noise amplifier and the filter, which are connected in sequence, so that the second processing path is configured to process a second frequency band signal.
[0021] Optionally, the radio frequency circuit further includes a directional coupler, through which the moving end of the first single-pole multi-throw switch is connected to the antenna.
[0022] Optionally, the radio frequency circuit further includes a second frequency divider and a second radio frequency power amplifier; the combining terminal of the second frequency divider is connected to the third stationary terminal of the first single-pole multi-throw switch; the splitting terminals of the second frequency divider are respectively connected to the second radio frequency power amplifier.
[0023] This application also provides a smart terminal, which includes the radio frequency circuit described above.
[0024] The radio frequency circuit and smart terminal provided in this application are connected through a first jumper assembly between the first stationary terminal and the moving terminal of the second single-pole multi-throw switch; and the first stationary terminal and the moving terminal of the third single-pole multi-throw switch are connected through a second jumper assembly. According to the frequency band requirements, the circuit connection can be directly realized through the jumper assembly, thereby saving the radio frequency front-end module and the single-pole multi-throw switch, effectively saving system costs and improving user experience. Attached Figure Description
[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.
[0026] Figure 1 A schematic diagram of the hardware structure of a mobile terminal to implement the various embodiments of this application.
[0027] Figure 2 This is a communication network system architecture diagram provided for an embodiment of this application.
[0028] Figure 3 This is a schematic diagram of a radio frequency circuit according to an embodiment of this application.
[0029] Figure 4 This is a schematic diagram of a radio frequency circuit architecture according to an embodiment of this application.
[0030] Figure 5 This is a schematic diagram of an overall reference design scheme according to an embodiment of this application.
[0031] Figure 6 This is a configuration diagram of an embodiment of this application.
[0032] Figure 7 This is a configuration diagram of an embodiment of this application.
[0033] Figure 8 This is a configuration diagram of an embodiment of this application.
[0034] Figure 9 This is a configuration diagram of an embodiment of this application.
[0035] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation
[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0037] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Optionally, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which needs to be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.
[0038] 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 used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, a first motor may also be referred to as a second motor, and similarly, a second motor may also be referred to as a first motor. Depending on the context, the word "if," as used herein, can be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, can be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.
[0039] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.
[0040] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”
[0041] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.
[0042] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.
[0043] Smart terminals can be implemented in various forms. For example, the smart terminals described in this application may include mobile terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.
[0044] The following description will use a mobile terminal as an example. Those skilled in the art will understand that, apart from elements specifically designed for mobile purposes, the construction according to the embodiments of this application can also be applied to fixed-type terminals.
[0045] Please see Figure 1 This is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of this application. The mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, etc. Those skilled in the art will understand that... Figure 1 The mobile terminal structure shown does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements.
[0046] The following is combined with Figure 1 A detailed introduction to each component of the mobile terminal:
[0047] The radio frequency unit 101 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with the processor 110; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, and a duplexer. Furthermore, the radio frequency unit 101 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), 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 Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), and 5G, etc.
[0048] WiFi is a short-range wireless transmission technology. Mobile terminals, through the WiFi module 102, can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 1 WiFi module 102 is shown, but it is understood that it is not a necessary component of a mobile terminal and can be omitted as needed without changing the nature of the invention.
[0049] The audio output unit 103 can convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into audio signals and output them as sound when the mobile terminal 100 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, etc. Furthermore, the audio output unit 103 can also provide audio output related to specific functions performed by the mobile terminal 100 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.
[0050] 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 GPU 1041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 106. The image frames processed by the GPU 1041 can be stored in the memory 109 (or other storage media) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) in operating modes such as telephone call mode, recording mode, and voice recognition mode, and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.
[0051] 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 and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the ambient light level, and the proximity sensor can turn off the display panel 1061 and / or backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. Other sensors that may be configured in the phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.
[0052] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
[0053] User input unit 107 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the mobile terminal. Optionally, user input unit 107 may include touch panel 1071 and other input devices 1072. Touch panel 1071, also known as touch screen, can collect touch operations on or near the user (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 1071), and drive corresponding connection devices according to a pre-set program. Touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, sends it to processor 110, and can receive and execute commands sent by processor 110. In addition, touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc., without being specifically limited here.
[0054] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides corresponding visual output on the display panel 1061 based on the type of touch event. Although in Figure 1 In this embodiment, the touch panel 1071 and the display panel 1061 are two independent components to realize the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the mobile terminal. The specific implementation is not limited here.
[0055] Interface unit 108 serves as an interface through which at least one external device can connect to 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 with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 108 may be used to receive input (e.g., data, power, etc.) from the external device and transmit the received input to one or more elements within mobile terminal 100, or it may be used to transmit data between mobile terminal 100 and the external device.
[0056] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.
[0057] The processor 110 is the control center of the mobile terminal. It connects various parts of the mobile terminal via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 109, and by calling data stored in the memory 109, it performs various functions and processes data of the mobile terminal, thereby providing overall monitoring of the mobile terminal. The 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 the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 110.
[0058] The mobile terminal 100 may also include a power supply 111 (such as a battery) that supplies power to various components. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.
[0059] although Figure 1 As not shown, the mobile terminal 100 may also include a Bluetooth module, etc., which will not be described in detail here.
[0060] To facilitate understanding of the embodiments of this application, the communication network system on which the mobile terminal of this application is based is described below.
[0061] Please see Figure 2 , Figure 2 This application provides a communication network system architecture diagram. The communication network system is an LTE system based on the universal mobile communication technology. 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 the operator's IP services 204, which are connected in sequence.
[0062] Optionally, UE201 can be the aforementioned terminal 100, which will not be described in detail here.
[0063] E-UTRAN202 includes eNodeB2021 and other eNodeB2022s. Optionally, eNodeB2021 can connect to other eNodeB2022s via backhaul (e.g., X2 interface). eNodeB2021 connects to EPC203 and can provide UE201 with access to EPC203.
[0064] 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 (Packet Data Network Gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME2031 is the control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as the Home Location Register (not shown in the figure) and stores user-specific information such as service characteristics and data rates. All user data can be sent through SGW2034. PGW2035 can provide UE 201 IP address allocation and other functions. PCRF2036 is the policy and charging control decision point for service data flow and IP bearer resources. It selects and provides available policy and charging control decisions for the policy and charging enforcement function unit (not shown in the figure).
[0065] IP services 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem), or other IP services.
[0066] Although the above description uses the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation.
[0067] Based on the above-described mobile terminal hardware structure and communication network system, various embodiments of this application are proposed.
[0068] First Embodiment
[0069] This application provides a radio frequency circuit, such as Figure 3 As shown, in one embodiment, the radio frequency circuit includes an antenna 11, a first single-pole multi-throw switch 23, and a first radio frequency power amplifier 31; the radio frequency circuit also includes a first jumper assembly 41 and / or a second jumper assembly 42. Optionally, the moving end of the first single-pole multi-throw switch 23 is connected to the antenna 11.
[0070] Optionally, the first output terminal of the first RF power amplifier 31 is connected to the first terminal of the first jumper assembly 41, and the second terminal of the first jumper assembly 41 is connected to the first stationary terminal of the first single-pole multi-throw switch 23.
[0071] Optionally, the third output terminal of the first RF power amplifier 31 is connected to the first terminal of the second jumper assembly 42, and the second terminal of the second jumper assembly 42 is connected to the second stationary terminal of the first single-pole multi-throw switch 23.
[0072] In this embodiment, the Single Pole Multi-Throw Switch (SPMS) includes one moving contact ("pole") and multiple stationary contacts ("throw"). The connection position of the moving contact is changed manually or automatically, thereby switching the current output path. When the moving contact is switched to a stationary contact, current flows from the input to the corresponding output, while the other stationary contacts are disconnected. Optionally, a Single Pole Double-Throw Switch (SPDS) switches between two outputs by pressing left and right. The SPMS can be considered an upgraded version of the SPDS, increasing the number of stationary contacts to meet more circuit control requirements. The radio frequency (RF) front-end module is the core component for processing RF signals in a wireless communication system. Located between the antenna and the baseband chip, it undertakes the task of converting radio electromagnetic wave signals to digital signals, directly affecting signal quality, transmission distance, and anti-interference capability. Its core functions include power amplification and filtering during signal transmission, and signal optimization and noise reduction during reception. Through the collaboration of multiple components, the RF front-end module becomes the "nerve center" of wireless communication, and its performance directly determines the stability and efficiency of the communication system.
[0073] Optionally, jumper components can replace flying wires or vias in single-sided or multi-layer board layouts, reducing design complexity. They can reserve circuit function configuration options (such as switching between different operating modes) and can be flexibly adjusted by soldering or removing jumper resistors. Jumper components can be jumpers or jumper resistors. Optionally, jumper resistors are 0-ohm jumper resistors in surface-mount package form, mainly used in circuit boards to replace traditional wires to achieve short-circuit function. Their actual resistance value is not theoretically 0Ω; the actual resistance value is usually ≤50mΩ (J-grade precision). The physical structure uses surface-mount packaging (such as 0805, 0603, etc.), which is small in size and easy to automate soldering. Functionally, they combine the attributes of both "jumpers" and "resistors," simplifying wiring design while retaining the standardized packaging advantages of resistors.
[0074] In this embodiment, the first stationary terminal of the second single-pole multi-throw switch is connected to the moving terminal of the second single-pole multi-throw switch via a first jumper assembly 41; and the first stationary terminal of the third single-pole multi-throw switch is connected to the moving terminal of the third single-pole multi-throw switch via a second jumper assembly 42. According to the specific frequency band requirements of areas with less frequency band demand, the circuit connection can be directly realized through the jumper assembly, thereby saving the RF front-end module and the single-pole multi-throw switch, effectively saving production costs.
[0075] Optionally, the radio frequency circuit further includes a second single-pole multi-throw switch 21; the first output terminal of the first radio frequency power amplifier 31 is connected to the first stationary terminal of the second single-pole multi-throw switch 21; the second output terminal of the first radio frequency power amplifier 31 is connected to the second stationary terminal of the second single-pole multi-throw switch 21; and the moving terminal of the second single-pole multi-throw switch 21 is connected to the first stationary terminal of the first single-pole multi-throw switch 23.
[0076] The first stationary end of the second single-pole multi-throw switch 21 is connected to the moving end of the second single-pole multi-throw switch 21 via a first jumper assembly 41 to keep it disconnected.
[0077] By connecting the second single-pole multi-throw switch 21 and the first jumper assembly 41 in parallel, the configuration options of the second single-pole multi-throw switch 21 are reserved for circuit functions, so that different working modes of the product can be switched according to the frequency band requirements of different regions, and flexible adjustment can be achieved by soldering or removing the jumper resistor.
[0078] Optionally, the radio frequency circuit further includes a third single-pole multi-throw switch 22; the third output terminal of the first radio frequency power amplifier 31 is connected to the first stationary terminal of the third single-pole multi-throw switch 22; the fourth output terminal of the first radio frequency power amplifier 31 is connected to the second stationary terminal of the third single-pole multi-throw switch 22; and the moving terminal of the third single-pole multi-throw switch 22 is connected to the second stationary terminal of the first single-pole multi-throw switch 23.
[0079] Optionally, the first stationary end of the third single-pole multi-throw switch 22 is connected to the moving end of the third single-pole multi-throw switch 22 via the second jumper assembly 42 to keep it disconnected.
[0080] By connecting the third single-pole multi-throw switch 22 and the second jumper assembly 42 in parallel, the configuration options of the third single-pole multi-throw switch 22 are reserved for circuit functions, so that different operating modes of the product can be switched according to the frequency band requirements of different regions, and flexible adjustment can be achieved by soldering or removing the jumper resistor.
[0081] Optionally, the RF circuit may also include more single-pole multiple-throw switches; please refer to [reference needed]. Figures 4-7 The radio frequency circuit also includes a third single-pole multiple-throw switch 24 and a third single-pole multiple-throw switch 25.
[0082] Please also refer to Figures 4-8 Optionally, the radio frequency circuit further includes a first filter 51 and / or a second filter 52; the first stationary terminal of the first single-pole multi-throw switch 23 is connected to the moving terminal of the second single-pole multi-throw switch 21 through the first filter 51.
[0083] Optionally, the second stationary terminal of the first single-pole multi-throw switch 23 is connected to the moving terminal of the third single-pole multi-throw switch 22 via the second filter 52.
[0084] Optionally, the first filter 51 is a Band 5 graded filter. Optionally, the second filter 52 is a Band 8 graded filter.
[0085] Optionally, the DRX SAW hierarchical filter is a multi-layered cascaded filter structure based on surface acoustic wave (SAW) technology, specifically designed to optimize signal selectivity and anti-interference performance in specific frequency bands, and is particularly suitable for dynamic signal processing needs in high-density communication environments. By cascading multiple SAW resonators or filter units, signal processing is refined step by step, achieving a steeper transition band and higher out-of-band rejection. Utilizing its dynamic adaptability (DRX characteristics), it can potentially integrate dynamic adjustment mechanisms (such as Discontinuous Reception technology) to automatically adjust filter parameters based on signal strength or interference levels, balancing power consumption and performance. For example, when the communication device is in Discontinuous Reception (DRX) mode, the hierarchical filter can shut down some unnecessary filter units to reduce power consumption while maintaining basic signal integrity. Through hierarchical design and dynamic adaptability, the DRX SAW hierarchical filter effectively improves the signal quality of the product.
[0086] Optionally, the radio frequency circuit further includes a transceiver 61, which is connected to the input terminal of the first radio frequency power amplifier 31 to transmit and receive signals through the first radio frequency power amplifier 31.
[0087] A transceiver is a core component of a wireless communication system and the cornerstone of wireless radio frequency communication. It is responsible for converting digital baseband signals to and from radio frequency signals, enabling the transmission and reception of radio waves. The transmitter is used for baseband signal modulation, RF carrier generation, and power amplification; the receiver is used for RF signal filtering, low-noise amplification, down-conversion, and demodulation; and the control circuit is used for frequency synthesis, gain adjustment, mode switching, dynamic power management, and ensuring frequency stability. During RF signal transmission, the transceiver converts baseband signals (such as audio and data) into high-frequency RF signals through modulation, up-conversion, and power amplification, which are then radiated into space via the antenna. During RF signal reception, the transceiver captures weak RF signals in space through the antenna, and after filtering, low-noise amplification, down-conversion, and demodulation, restores them to baseband signals for subsequent processing.
[0088] Figure 4 This is a schematic diagram of a radio frequency circuit architecture according to an embodiment of this application.
[0089] like Figure 4 As shown, optionally, the radio frequency circuit further includes a first frequency divider 82, and the moving end of the first single-pole multi-throw switch 31 is connected to the antenna 11 through the first frequency divider 82 to form a first processing path.
[0090] Optionally, the antenna is used to transmit and receive wireless signals. A first end of the first frequency divider is connected to the antenna, and a second end of the first frequency divider is connected to a first processing path. The first frequency divider can be configured to switch between transmitting the wireless signal from the first end and the first frequency band signal from the second end.
[0091] Please continue to refer to this. Figure 4 Optionally, the first processing path includes an FEM module 91. A first terminal of the FEM module 91 is connected to the first frequency divider 82, a second terminal of the FEM module 91 is connected to the transceiver 61, and a third terminal of the FEM module 91 is connected to the moving terminal of the first single-pole multi-throw switch 31. The first processing path is configured to process a first frequency band signal.
[0092] Optionally, the first processing path can be used for bidirectional processing of short-wavelength communication signals and may include a low-noise amplifier, an FEM module, an RF power amplifier, and a transceiver switching switch. During the reception process of the high-frequency channel, the receiving path requires the FEM module to select the transceiver path and the transceiver to perform signal processing steps. During the transmission process of the high-frequency channel, the transceiver modulates the information to be transmitted, amplifies the RF signal power through the RF power amplifier, selects the path through the FEM module, and finally transmits the RF signal through the antenna.
[0093] Please continue to refer to this. Figure 4 Optionally, the radio frequency circuit further includes a second processing path, which includes a low-noise amplifier 92, a filter 93, and a modem 94. The first frequency divider 82 is connected to the modem 94 via the low-noise amplifier 31 and the filter 93 connected in sequence, so that the second processing path is configured to process the second frequency band signal.
[0094] Optionally, the third terminal of the first frequency divider is connected to the second processing path. The frequency divider can be configured to switch between transmitting the wireless signal from the first terminal and the first frequency band signal from the second terminal and the second frequency band signal from the third terminal. The first frequency divider, in conjunction with a multi-band antenna, can significantly reduce the cost of the antenna feeder system and enable multi-system sharing, making more efficient use of limited site resources. This allows for smaller product size, miniaturization of wireless products, and cost reduction. Optionally, when receiving wireless signals, the antenna transmits the received wireless signals from different frequency bands to the frequency divider, which then decomposes the wireless signals into at least one first frequency band signal and at least one second frequency band signal. Optionally, when transmitting wireless signals, the first frequency divider integrates the at least one first frequency band signal and at least one second frequency band signal, which are then transmitted by the antenna according to different frequency bands.
[0095] Wireless communication components integrate low-frequency and high-frequency bands on a single antenna through the frequency division and combining functions of a frequency divider, effectively reducing the antenna's footprint.
[0096] Optionally, the radio frequency circuit further includes a directional coupler 71, through which the moving end of the first single-pole multi-throw switch 23 is connected to the antenna 11.
[0097] A directional coupler is a four-port passive device used in microwave / millimeter-wave systems. Its core function is to separate the forward and backward waves in a transmission line through electromagnetic coupling, thereby achieving signal power distribution, isolation, and monitoring. Directional couplers can be implemented using waveguides, coaxial lines, microstrip lines, and other structures, with microstrip line designs being more suitable for high-frequency miniaturized devices. As the "signal scheduling hub" of an RF system, the directional coupler helps improve communication quality and measurement accuracy, continuously driving technological breakthroughs in high-frequency, high-integration applications.
[0098] Optionally, the radio frequency circuit further includes a second frequency divider 81 and a second radio frequency power amplifier 32. The combining terminal of the second frequency divider 81 is connected to the third stationary terminal of the first single-pole multi-throw switch 23; the splitting terminals of the second frequency divider 81 are respectively connected to the second radio frequency power amplifier 32.
[0099] Optionally, 2G communication and voice functions can be made compatible in a 4G architecture through a second frequency divider 81 and a second RF power amplifier 32, giving the system better compatibility.
[0100] This application also provides a smart terminal, which includes the radio frequency circuit described above.
[0101] Please refer to Figures 5-9 , Figure 5 A block diagram example of an overall reference design scheme for the radio frequency circuit of a smart terminal is provided. Optionally, several jumper-mount components are arranged in parallel next to the single-pole multi-throw switch. Figure 6 This document provides an example of an RF configuration scheme for the Indian and Bangladeshi markets. Since the communication frequency bands required by the Indian and Bangladeshi markets are B1 / 3 / 5 / 7 / 8 / 20 / 28 / 38 / 40 / 41, the three single-pole multi-throw (SPO) switches (U2, U7, and U4) shown in the diagram can be omitted from the configuration design for these markets, and jumper paths can be used directly. Based on this frequency band strategy, the corresponding SPO switches can be eliminated in configurations for India, Southeast Asia, and Bangladesh (Africa). When designing, configure compatible jumpers as shown in the diagram, ensuring proper backup. Configure corresponding jumper matching for Africa and other regions, while maintaining default matching for other configurations.
[0102] Figure 7 This document provides an example of a radio frequency (RF) solution configured for markets in Africa, the Middle East, Central Asia, and Ukraine. Since the communication frequency bands required by these markets are B1 / 3 / 5 / 7 / 8 / 20 / 28A / 38 / 40 / 41, the three single-pole multi-throw (SPMW) switches (U2, U6, and U4) can be omitted from the design for these markets, allowing for direct use of jumper-mounted paths. Figure 8 An example of a radio frequency configuration scheme for the Southeast Asia and Egypt markets is provided. Since the communication frequency bands required by the Southeast Asia and Egypt communication markets are: B / 1 / 3 / 5 / 7 / 8 / 20 / 28A / 38 / 40 / 41, the three single-pole multi-throw switches numbered U2, U7 and U4 in the diagram can be omitted in the Southeast Asia and Egypt configuration design, and a compatible jumper path can be used. Figure 9 An example of a radio frequency (RF) configuration solution for markets such as Latin America, Canada, and Europe is provided. Since the communication frequency bands required in the communication markets of Latin America and other regions are B1 / 2 / 3 / 4 / 5 / 7 / 8 / 12 / 17 / 20 / 28A / 28B / 38 / 41, a relatively larger number of channels can be achieved in the configuration in Latin America and other regions by using multiple single-pole multi-throw (SPMD) switches.
[0103] The radio frequency circuit and smart terminal provided in this application are connected through a first jumper assembly between the first stationary terminal and the moving terminal of the second single-pole multi-throw switch; and the first stationary terminal and the moving terminal of the third single-pole multi-throw switch are connected through a second jumper assembly. According to the frequency band requirements, the circuit connection can be directly realized through the jumper assembly, thereby saving the radio frequency front-end module and the single-pole multi-throw switch, effectively saving system costs and improving user experience.
[0104] It is understood that the above scenarios are merely examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, as those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
[0105] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0106] The steps in the method of this application embodiment can be adjusted, combined, or deleted according to actual needs.
[0107] The units in the device of this application embodiment can be merged, divided, and deleted according to actual needs.
[0108] In this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions are generally described in detail only when they appear for the first time. When they appear again, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions that are not described in detail later can be referred to their previous relevant detailed descriptions.
[0109] In this application, the descriptions of the various embodiments have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0110] The technical features of the present application can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.
[0111] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A radio frequency circuit, characterized in that, The circuit includes an antenna, a first single-pole multi-throw switch, and a first radio frequency power amplifier; the radio frequency circuit also includes a first jumper assembly and / or a second jumper assembly. The first output terminal of the first RF power amplifier is connected to the first terminal of the first jumper assembly, and the second terminal of the first jumper assembly is connected to the first stationary terminal of the first single-pole multi-throw switch; and / or, The third output terminal of the first RF power amplifier is connected to the first terminal of the second jumper assembly, and the second terminal of the second jumper assembly is connected to the second stationary terminal of the first single-pole multi-throw switch. The moving end of the first single-pole multi-throw switch is connected to the antenna.
2. The radio frequency circuit according to claim 1, characterized in that, The radio frequency circuit also includes a second single-pole multi-throw switch; The first output terminal of the first RF power amplifier is connected to the first stationary terminal of the second single-pole multi-throw switch; the second output terminal of the first RF power amplifier is connected to the second stationary terminal of the second single-pole multi-throw switch; the moving terminal of the second single-pole multi-throw switch is connected to the first stationary terminal of the first single-pole multi-throw switch. The first stationary end of the second single-pole multi-throw switch is connected to the moving end of the second single-pole multi-throw switch via a first jumper assembly; And / or, The radio frequency circuit also includes a third single-pole multi-throw switch; The third output terminal of the first RF power amplifier is connected to the first stationary terminal of the third single-pole multi-throw switch; the fourth output terminal of the first RF power amplifier is connected to the second stationary terminal of the third single-pole multi-throw switch; the moving terminal of the third single-pole multi-throw switch is connected to the second stationary terminal of the first single-pole multi-throw switch. The first stationary terminal of the third single-pole multi-throw switch is connected to the moving terminal of the third single-pole multi-throw switch via a second jumper assembly to keep them disconnected.
3. The radio frequency circuit according to claim 2, characterized in that, The radio frequency circuit further includes a first filter and / or a second filter; The first stationary terminal of the first single-pole multi-throw switch is connected to the moving terminal of the second single-pole multi-throw switch via the first filter; and / or, The second stationary terminal of the first single-pole multi-throw switch is connected to the moving terminal of the third single-pole multi-throw switch through the second filter.
4. The radio frequency circuit according to claim 3, characterized in that, The radio frequency circuit also includes a transceiver connected to the input of the first radio frequency power amplifier to transmit and receive signals through the first radio frequency power amplifier.
5. The radio frequency circuit according to claim 4, characterized in that, The radio frequency circuit further includes a first frequency divider, and the moving end of the first single-pole multi-throw switch is connected to the antenna through the first frequency divider to form a first processing path.
6. A radio frequency circuit according to claim 5, characterized in that, The first processing path includes an FEM module; the first end of the FEM module is connected to the first frequency divider, the second end of the FEM module is connected to the transceiver, and the third end of the FEM module is connected to the moving end of the first single-pole multi-throw switch. The first processing path is configured to process a first frequency band signal.
7. The radio frequency circuit according to claim 5, characterized in that, The radio frequency circuit also includes a second processing path, which further includes a low-noise amplifier, a filter, and a modem. The first frequency divider is connected to the modem through the low-noise amplifier and the filter, so that the second processing path is configured to process a second frequency band signal.
8. A radio frequency circuit according to any one of claims 1 to 4, characterized in that, The radio frequency circuit also includes a directional coupler, through which the moving end of the first single-pole multi-throw switch is connected to the antenna.
9. A radio frequency circuit according to any one of claims 1 to 4, characterized in that, The radio frequency circuit further includes a second frequency divider and a second radio frequency power amplifier; the combining terminal of the second frequency divider is connected to the third stationary terminal of the first single-pole multi-throw switch; the splitting terminals of the second frequency divider are respectively connected to the second radio frequency power amplifier.
10. A smart terminal, characterized in that, The smart terminal includes the radio frequency circuit as described in any one of claims 1 to 9.