Radio frequency system, radio frequency chip and electronic equipment

Abstract

The embodiment of the utility model provides a radio frequency system, a radio frequency chip and electronic equipment. According to the method, a frequency band selection switch, amplifiers and an output routing module are sequentially arranged along a signal transmission path, the multiple amplifiers are arranged, and the different amplifiers are independently arranged; the frequency band selection switches are provided with a plurality of frequency band input ends, different frequency band input ends receive different frequency band signals, and the frequency band output end of each frequency band selection switch is connected with the input end of each amplifier in a one-to-one correspondence manner; the output end of the amplifier is connected with the receiver; or the output end of each amplifier is connected with the receiver through at least one output routing module. The method is used for achieving the effect of reducing the cost of the radio frequency system in the wireless mobile terminal.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to a radio frequency system, radio frequency chip, and electronic device. Background Technology

[0002] With the rapid development of consumer electronics and the increasing market competition, various terminal devices face increasingly higher requirements in terms of functional integration, performance indicators, and cost control. Especially in the field of wireless communication, reducing overall hardware design costs while ensuring RF reception quality has become one of the key challenges in product design. As a crucial component of wireless devices, the structural optimization and performance improvement of the RF front-end have a decisive impact on the overall competitiveness of the device.

[0003] Currently, in mainstream wireless mobile terminal designs, to meet the increasingly demanding requirements for receiver sensitivity and multi-band compatibility, a common approach is to incorporate a low-noise amplifier (LNA) array (LNAABANK) into the RF link to enhance signal strength and suppress noise interference. This solution achieves superior receiver performance by configuring independent low-noise amplification paths for different frequency bands.

[0004] However, this design approach not only increases the complexity of the hardware circuitry, but also significantly increases material costs and production debugging difficulties, especially with the increasing prevalence of multi-mode and multi-frequency terminals, the problems are even more prominent. Utility Model Content

[0005] The radio frequency system, radio frequency chip, and electronic device provided in this application are used to reduce the cost of the radio frequency system in a wireless mobile terminal.

[0006] In a first aspect, embodiments of this application provide a radio frequency system, including a frequency band selection switch, an amplifier, and an output routing module arranged sequentially along a signal transmission path. There are multiple amplifiers, and the different amplifiers are set independently of each other.

[0007] The frequency band selection switch has multiple frequency band input terminals, and different frequency band input terminals receive different frequency band signals. The frequency band output terminal of each frequency band selection switch is connected to the input terminal of each amplifier in a one-to-one correspondence.

[0008] The output of the amplifier is connected to the receiver; or, the output of each amplifier is connected to the receiver through at least one output routing module.

[0009] In one possible implementation, the amplifier includes a first amplifier and a third amplifier for processing intermediate frequency band signals, wherein the frequency band signal type received by the frequency band selection switch connected to the first amplifier and the frequency band signal type received by the frequency band selection switch connected to the third amplifier are different.

[0010] And / or,

[0011] The amplifier includes a second amplifier and a fourth amplifier for processing high-frequency band signals, wherein the type of frequency band signal received by the frequency band selection switch connected to the second amplifier and the type of frequency band signal received by the frequency band selection switch connected to the fourth amplifier are different.

[0012] In one possible implementation, the output of the first amplifier is connected to any one of the following receivers via an output routing module: an intermediate frequency digital receiver, a high frequency digital receiver, and an intermediate frequency main receiver.

[0013] The output of the third amplifier can be connected to any one of the following receivers via an output routing module: intermediate frequency digital receiver, high frequency digital receiver, intermediate frequency main receiver, and high frequency main receiver.

[0014] In one possible implementation, the outputs of the second amplifier and the fourth amplifier are both connected to any one of the following receivers via an output routing module: an intermediate frequency digital receiver, a high frequency digital receiver, an intermediate frequency main receiver, and a high frequency main receiver.

[0015] In one possible implementation, the output routing module includes a first routing switch and a second routing switch, wherein...

[0016] The first input terminal of the first routing switch is connected to the output terminal of the second amplifier, the second input terminal of the first routing switch is connected to the output terminal of the third amplifier, the third input terminal of the first routing switch is connected to the output terminal of the fourth amplifier, the first output terminal of the first routing switch is connected to the second input terminal of the second routing switch, the second output terminal of the first routing switch is connected to the third input terminal of the second routing switch, and the third output terminal of the first routing switch is connected to the high-frequency main receiver in the receiver.

[0017] The first input terminal of the second routing switch is connected to the output terminal of the first amplifier, the first output terminal of the second routing switch is connected to the intermediate frequency digital receiver in the receiver, the second output terminal of the second routing switch is connected to the high frequency digital receiver in the receiver, and the third output terminal of the second routing switch is connected to the intermediate frequency main receiver in the receiver.

[0018] In one possible implementation, the output routing module includes a third routing switch and a fourth routing switch, wherein,

[0019] The first input terminal of the third routing switch is connected to the output terminal of the first amplifier, the second input terminal of the third routing switch is connected to the output terminal of the second amplifier, the first output terminal of the third routing switch is connected to the intermediate frequency digital receiver in the receiver, and the second output terminal of the third routing switch is connected to the high frequency digital receiver in the receiver.

[0020] The first input terminal of the fourth routing switch is connected to the output terminal of the third amplifier, the second input terminal of the fourth routing switch is connected to the output terminal of the fourth amplifier, the first output terminal of the fourth routing switch is connected to the intermediate frequency main receiver in the receiver, and the second output terminal of the third routing switch is connected to the high frequency main receiver in the receiver.

[0021] In one possible implementation, a routing input switch is further provided between the frequency band selection switch connected to the first amplifier and the frequency band selection switch connected to the second amplifier;

[0022] The input terminal of the routing input switch is connected to a device for inputting a target frequency band signal. One output terminal of the routing input switch is connected to one frequency band input terminal of a frequency band selection switch connected to the first amplifier. The other output terminal of the routing input switch is connected to one frequency band input terminal of a frequency band selection switch connected to the second amplifier.

[0023] In one possible implementation, the amplifier further includes a fifth amplifier for processing low-frequency band signals, the input of which is connected to a band selection switch, and the output of which is connected to a low-frequency receiver in the receiver.

[0024] Secondly, embodiments of this application provide a radio frequency chip, including a radio frequency system.

[0025] Thirdly, embodiments of this application provide an electronic device, including a radio frequency chip.

[0026] The radio frequency (RF) system, RF chip, and electronic device provided in this application embodiment achieve a design concept of independently configuring amplification paths according to different frequency bands by setting a frequency band selection switch, multiple independent amplifiers, and an output routing module in the signal transmission path. The frequency band selection switch selects the corresponding amplifier for signal amplification based on the frequency band of the input signal, avoiding the high power consumption and high cost problems caused by all amplifiers being constantly in operation in traditional LNA banks. This not only simplifies the complexity of circuit design and reduces the difficulty of hardware debugging, but also effectively saves energy by enabling amplifiers of specific frequency bands on demand, thereby improving the integration and economy of the RF system while ensuring reception performance. Attached Figure Description

[0027] 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.

[0028] Figure 1 A schematic diagram of the existing radio frequency system provided in this application;

[0029] Figure 2 Schematic diagram of the radio frequency system provided in this application Figure 1 ;

[0030] Figure 3 Schematic diagram of the radio frequency system provided in this application Figure 2 ;

[0031] Figure 4 Schematic diagram of the radio frequency system provided in this application Figure 3 .

[0032] Attached label: 100 - Frequency band selection switch;

[0033] 210 - First amplifier; 220 - Second amplifier; 230 - Third amplifier; 240 - Fourth amplifier; 250 - Fifth amplifier;

[0034] 300 - Output routing module; 310 - First routing switch; 320 - Second routing switch; 330 - Third routing switch; 340 - Fourth routing switch;

[0035] 410 - Intermediate frequency digital receiver; 420 - High frequency digital receiver; 430 - Intermediate frequency main receiver; 440 - High frequency main receiver; 450 - Low frequency receiver;

[0036] 500 - Router input switch.

[0037] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0038] 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.

[0039] First, let me explain the terms used in this application:

[0040] An amplifier can refer to a low-noise amplifier (LNA), a key component in radio frequency (RF) front-end circuitry. It is primarily used to amplify weak received signals in wireless communication systems, enabling subsequent circuits to process these signals more effectively. The design focus of an LNA is to minimize its own noise figure while ensuring high gain and good linearity for signals within the desired frequency band, thereby improving the overall sensitivity and signal quality of the receiver. Placing an LNA at the front end of the receiver link effectively overcomes the noise introduced by subsequent circuit stages, which is crucial for improving the performance of the entire system.

[0041] Frequency band signals refer to wireless communication signals classified according to their operating frequencies, specifically low-frequency (LFM), mid-frequency (IF), and high-frequency (HF) band signals. For example, LFM signals are those with frequencies between 30kHz and 300kHz. These signals have strong penetration and a wide coverage area, but lower data transmission rates, and are often used for long-distance communication such as radio broadcasting. IF signals are those with frequencies between 300kHz and 3MHz. These signals have moderate propagation characteristics and some data transmission capabilities, suitable for AM broadcasting and some shortwave communications. HF band signals are those with frequencies between 3MHz and 30MHz, or even higher. These signals support higher data transmission rates, but have relatively smaller coverage and penetration capabilities, and are widely used in television broadcasting, mobile communications (such as some 4G / 5G frequency bands), and satellite communications.

[0042] A receiver, in a wireless communication system, is a device responsible for receiving and processing radio frequency (RF) signals from a transmitter, converting them into understandable information (such as voice, data, or video). Based on their different frequency ranges and functional characteristics, receivers can be categorized into various types, including intermediate frequency (IF) digital receivers, high-frequency (HF) digital receivers, IF master receivers, HF master receivers, and low-frequency (LFM) master receivers. They are optimized for processing signals within specific frequency bands. For example, an IF digital receiver processes frequency-converted IF signals, while a HF digital receiver directly processes high-frequency RF signals to achieve high-speed data transmission. By designing specialized receivers, wireless communication systems can efficiently receive and process signals of different frequencies in various application scenarios, ensuring communication quality and reliability.

[0043] Figure 1 A schematic diagram of the existing radio frequency system provided in this application is shown below. Figure 1As shown, the existing radio frequency system includes a radio frequency front-end module, which contains five amplifiers and an output routing multiplexer. The input terminals of the five amplifiers receive radio frequency signals of different frequency bands through the input ports on the radio frequency front-end module, and the output terminals of the five amplifiers are connected to the receiver through the output ports on the radio frequency front-end module, or sequentially through the output routing multiplexer and the output ports on the radio frequency front-end module.

[0044] Combination Figure 1 It is known that in existing technologies, adding an LNA bank to the RF link can meet the requirements for multi-band and high-sensitivity reception performance. However, this approach leads to complex circuit design, including numerous switches and path selection mechanisms, increasing hardware design difficulty and debugging time. Furthermore, since each frequency band requires an independent amplification path and switch configuration, this not only significantly increases material and production costs but also introduces unnecessary power consumption, as components may remain operational even when some frequency bands are not in use. In addition, the complexity of system debugging further prolongs the development cycle and may affect product quality. These combined issues pose significant challenges to existing technologies in the consumer electronics market, which prioritizes low cost and high performance, highlighting the need for new technological solutions that simplify design, reduce power consumption, and lower costs.

[0045] The radio frequency system provided in this application simplifies the circuit structure and reduces the number of unnecessary switches by adopting a design where each frequency band selection switch corresponds to an independent amplifier, thereby lowering hardware costs and complexity. Each frequency band signal is processed by a dedicated amplifier and then flexibly connected to the receiver via an output routing module. This not only achieves effective power consumption control (since amplifiers for non-operating frequency bands can be turned off), but also improves system integration and debugging convenience. Thus, it achieves the technical effect of meeting the requirements for high-performance multi-band reception while reducing costs, power consumption, and facilitating maintenance.

[0046] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0047] Figure 2 Schematic diagram of the radio frequency system provided in this application Figure 1 ,like Figure 2 As shown, the radio frequency system includes a frequency band selection switch 100, an amplifier, and an output routing module 300 arranged sequentially along the signal transmission path. There are multiple amplifiers, and the different amplifiers are set independently of each other.

[0048] The frequency band selection switch 100 can be used to switch and select different frequency band signals in a multi-band radio frequency system, enabling the system to dynamically select the required frequency band according to different communication needs, thereby improving spectrum utilization and system flexibility.

[0049] Amplifiers can be used to enhance weak received signals, ensuring signal integrity and readability after long-distance transmission or through complex environments.

[0050] The output routing module 300 can be used for signal distribution and management, and it can direct the processed signals to different paths or devices according to system requirements.

[0051] The frequency band selection switch 100 includes a frequency band input terminal and a frequency band output terminal. There are multiple frequency band input terminals, and different frequency band input terminals receive different frequency band signals. For example, the frequency band selection switch 100 can have 4 input terminals, which can respectively receive data from the frequency band signals of the 1st frequency band, the 7th frequency band, the 40th frequency band, and the 41st frequency band.

[0052] In this embodiment, the frequency band input terminal of the frequency band selection switch 100 can be connected to the data receiving path or port of the corresponding frequency band to receive the frequency band signal. The frequency band output terminal of the frequency band selection switch 100 is connected to the input terminal of the amplifier. Each frequency band output terminal of the frequency band selection switch 100 is connected to the input terminal of one amplifier. That is, when there are 5 amplifiers, there are also 5 frequency band selection switches 100, and each frequency band output terminal of the frequency band selection switch 100 is connected to the input terminal of each amplifier.

[0053] The amplifier's output is connected to the receiver. When there are multiple amplifiers, in order to achieve selective merging or switching of multiple signals and ensure that the receiver can flexibly process enhanced signals from different frequency bands or paths as needed, thereby improving system compatibility, efficiency and reliability, the amplifier's output can also be connected to the receiver through at least one output routing module 300.

[0054] When there are multiple amplifiers, the amplifiers may include any two or more of the following: first amplifier 210, second amplifier 220, third amplifier 230, fourth amplifier 240 and fifth amplifier 250. The first amplifier 210 and the third amplifier 230 are used to process mid-frequency band signals of different frequency band signal types, the second amplifier 220 and the fourth amplifier 240 are used to process high-frequency band signals of different frequency band signal types, and the fifth amplifier 250 is used to process low-frequency band signals.

[0055] For example, the first amplifier 210 and the third amplifier 230 can be multiband low noise amplifiers (MB LNAs). These amplifiers are used to process signals from multiple different frequency bands simultaneously. They can effectively amplify weak signals at the receiver front end while keeping the noise figure at a low level, thereby improving signal quality and receiver sensitivity.

[0056] The second amplifier 220 and the fourth amplifier 240 can be mid-high band low noise amplifiers (MHB LNAs). These amplifiers amplify mid-to-high frequency signals in wireless communication while maintaining a low noise figure to ensure high signal quality and high receiver sensitivity. By optimizing for specific frequency ranges, MHB LNAs can effectively process signals within these bands, reducing interference and distortion. They are suitable for various applications requiring the processing of mid-to-high frequency signals, such as mobile communication systems.

[0057] The fifth amplifier 250 can be a low-band low-noise amplifier (LB LNA), which amplifies lower-frequency signals in wireless communication while ensuring the lowest possible noise figure. By effectively amplifying low-frequency signals at the receiver front end, the LB LNA improves signal quality and receiver sensitivity, enabling clear communication even in weak signal conditions.

[0058] The frequency band signal type can be determined based on the different frequency ranges used in wireless communication. In some embodiments, each frequency band has its specific operating frequency, wavelength, and corresponding propagation characteristics.

[0059] For example, the frequency band signal type received by the first amplifier 210, the second amplifier 220, and the fifth amplifier 250 can be a signal processing path type (PRX, Primary Receive), which can refer to the main channel or functional module of the device used to receive signals in a specific frequency band. PRX can be associated with a specific frequency band; for example, B1 PRX indicates the primary receiving function for the Band 1 frequency band.

[0060] For example, the frequency band signal type received by the third amplifier 230 and the fourth amplifier 240 can be a discontinuous reception (DRX) type, which refers to a technique that saves power in mobile devices by controlling the receiver's activity cycle. The DRX mechanism allows the device to enter a low-power state when it does not need to continuously monitor the network and is only activated at predetermined time intervals to check if there is data to be received.

[0061] In this embodiment, the input terminal of the fifth amplifier 250 is connected to the frequency band selection switch 100, and the output terminal of the fifth amplifier 250 is connected to the low-frequency receiver in the receiver.

[0062] In this embodiment of the application, a routing input switch is also provided between the frequency band selection switch 100 connected to the first amplifier 210 and the frequency band selection switch 100 connected to the second amplifier 220.

[0063] The routing input switch 500 can refer to a device or mechanism used in a signal processing system that can select and switch different signal sources, directing the input signal to a specified processing path or output terminal, so as to achieve effective management and optimized use of the signal.

[0064] In this embodiment, the input terminal of the routing input switch 500 is connected to a device for inputting a target frequency band signal, one output terminal of the routing input switch 500 is connected to one frequency band input terminal of the frequency band selection switch 100 connected to the first amplifier 210, and the other output terminal of the routing input switch 500 is connected to one frequency band input terminal of the frequency band selection switch 100 connected to the second amplifier 220.

[0065] For example, when the first amplifier 210 is an MB LNA and the second amplifier 220 is an MHB LNA, both the first amplifier 210 and the second amplifier 220 can process the target frequency band signal. Therefore, a routing input switch 500 can be set so that the target frequency band signal can be input to the first amplifier 210 and the second amplifier 220 through the routing input switch 500 and the corresponding frequency band selection switch 100.

[0066] After processing the frequency band signal, the amplifier can be connected to the receiver, or connected to the receiver through the output routing module 300. The receiver may include an intermediate frequency digital receiver 410, a high frequency digital receiver 420, an intermediate frequency main receiver 430, a high frequency main receiver 440, and a low frequency receiver 450.

[0067] When the first amplifier 210 is an MB LNA, it is used to process PRX type frequency band signals. MBLNAs have the ability to process multiple frequency band signals, making them particularly suitable for system front-ends that support multi-band operation. The first amplifier 210 handles PRX (Primary Receive) type signals, which typically require priority in reception quality and system stability. Because it processes multi-band signals on the primary receive path, its output can be connected to any of the following: intermediate frequency digital receiver 410, high frequency digital receiver 420, or intermediate frequency main receiver 430.

[0068] When the second amplifier 220 and the fourth amplifier 240 are MHB LNAs, they are used to process mid-to-high frequency signals of PRX and DRX types, respectively. The MHB LNA focuses on low-noise amplification of signals from the intermediate frequency to the high frequency band, exhibiting high frequency band specificity and optimized performance. The second amplifier 220 serves PRX type signals, emphasizing high-quality primary reception capability in specific mid-to-high frequency bands; while the fourth amplifier 240 serves DRX type signals, typically used for auxiliary reception or diversity reception paths, requiring greater flexibility and adaptability. Therefore, to dynamically match the most suitable processing unit according to the signal application and frequency band characteristics, thereby improving overall reception performance and system efficiency, its output can be connected to any one of the following: intermediate frequency digital receiver 410, high frequency digital receiver 420, intermediate frequency main receiver 430, or high frequency main receiver 440.

[0069] When the third amplifier 230 is an MB LNA, it is used to process DRX-type multi-band signals. As a DRX-type signal processing module, the third amplifier 230 undertakes the task of receiving multi-band signals on non-primary paths. Compared with the first amplifier 210, it places greater emphasis on the system's scalability and versatility. Therefore, its output connection range is wider, and it can interface with various types of receivers to adapt to different network configurations and application scenarios. This improves the system's signal reception and fault tolerance capabilities in complex environments, ensuring that the DRX path can flexibly respond to diverse communication needs.

[0070] Figure 3 A schematic diagram of the radio frequency system provided in the embodiments of this application. Figure 2 ,like Figure 3 As shown, the radio frequency system includes a frequency band selection switch 100, an amplifier, and an output routing module 300 arranged sequentially along the signal transmission path. There are multiple amplifiers, and the different amplifiers are set independently of each other.

[0071] The output routing module 300 may include a first routing switch 310 and a second routing switch 320.

[0072] The first input terminal of the first routing switch 310 is connected to the output terminal of the second amplifier 220, the second input terminal of the first routing switch 310 is connected to the output terminal of the third amplifier 230, the third input terminal of the first routing switch 310 is connected to the output terminal of the fourth amplifier 240, the first output terminal of the first routing switch 310 is connected to the second input terminal of the second routing switch 320, the second output terminal of the first routing switch 310 is connected to the third input terminal of the second routing switch 320, and the third output terminal of the first routing switch 310 is connected to the high-frequency main receiver 440 in the receiver.

[0073] The first input terminal of the second routing switch 320 is connected to the output terminal of the first amplifier 210, the first output terminal of the second routing switch 320 is connected to the intermediate frequency digital receiver 410 in the receiver, the second output terminal of the second routing switch 320 is connected to the high frequency digital receiver 420 in the receiver, and the third output terminal of the second routing switch 320 is connected to the intermediate frequency main receiver 430 in the receiver.

[0074] In this embodiment, both the first routing switch 310 and the second routing switch 320 are three-input, three-output switches, meaning they each have three input terminals and three output terminals. In this application, three-input, three-output switches are more common than switches with more inputs or more outputs, resulting in lower costs and easier procurement. Furthermore, combining two three-input, three-output switches to achieve the functionality that would otherwise require switches with more outputs increases system redundancy and flexibility. If one switch fails, the other can continue operating depending on the application, reducing the risk of system failure due to a single point of failure and providing more configuration possibilities.

[0075] Figure 4 A schematic diagram of the radio frequency system provided in the embodiments of this application. Figure 3 ,like Figure 4 As shown, the radio frequency system includes a frequency band selection switch 100, an amplifier, and an output routing module 300 arranged sequentially along the signal transmission path. There are multiple amplifiers, and the different amplifiers are set independently of each other.

[0076] The output routing module 300 includes a third routing switch 330 and a fourth routing switch 340.

[0077] The first input terminal of the third routing switch 330 is connected to the output terminal of the first amplifier 210, the second input terminal of the third routing switch 330 is connected to the output terminal of the second amplifier 220, the first output terminal of the third routing switch 330 is connected to the intermediate frequency digital receiver 410 in the receiver, and the second output terminal of the third routing switch 330 is connected to the high frequency digital receiver 420 in the receiver.

[0078] The first input terminal of the fourth routing switch 340 is connected to the output terminal of the third amplifier 230, the second input terminal of the fourth routing switch 340 is connected to the output terminal of the fourth amplifier 240, the first output terminal of the fourth routing switch 340 is connected to the intermediate frequency main receiver 430 in the receiver, and the second output terminal of the third routing switch 330 is connected to the high frequency main receiver 440 in the receiver.

[0079] In this embodiment, both the third routing switch 330 and the fourth routing switch 340 are two-input, two-output switches, meaning that both the first routing switch 310 and the second routing switch 320 have two input terminals and two output terminals. The RF system provided in this application, through optimized RF front-end architecture design, allows the wireless mobile terminal to eliminate the traditional LNA BANK (Low Noise Amplifier Array), thereby significantly reducing hardware costs and complexity. Simultaneously, using SP4T switches as input terminals improves the system's flexibility in adding or removing frequency bands, achieving better cost control and functional expansion capabilities. Furthermore, by using a combination of 3P3T and DPDT switches to build an equivalent 4P4T switch structure, cost reduction is further achieved while maintaining performance. The overall solution achieves the design goals of high cost-effectiveness, high scalability, and high integration while ensuring signal processing efficiency and multi-band compatibility.

[0080] This application also provides a radio frequency (RF) chip, including an RF system. The RF chip can be a key integrated circuit used in wireless communication devices, such as a chip supporting 4G / 5G mobile communication, Wi-Fi connectivity, Bluetooth transmission, or GPS positioning. The chip integrates RF receiving and transmitting paths, a frequency synthesizer, a low-noise amplifier (LNA), a power amplifier (PA), and a signal processing module, enabling it to perform functions such as wireless signal transmission, reception, and modulation / demodulation.

[0081] This application also provides an electronic device, including a radio frequency chip. The electronic device can be a smart terminal or networked device with wireless communication capabilities, such as a smartphone, wearable device (smartwatch, earphone), wireless router, industrial sensor, vehicle-mounted T-BOX, drone communication module, etc.

[0082] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A radio frequency system, characterized in that, It includes a frequency band selection switch, an amplifier, and an output routing module arranged sequentially along the signal transmission path. There are multiple amplifiers, and the different amplifiers are set independently of each other. The frequency band selection switch has multiple frequency band input terminals, and different frequency band input terminals receive different frequency band signals. The frequency band output terminal of each frequency band selection switch is connected to the input terminal of each amplifier in a one-to-one correspondence. The output of the amplifier is connected to the receiver. Alternatively, the output of each of the amplifiers may be connected to the receiver via at least one of the output routing modules.

2. The radio frequency system according to claim 1, characterized in that, The amplifier includes a first amplifier and a third amplifier for processing intermediate frequency band signals, wherein the frequency band signal type received by the frequency band selection switch connected to the first amplifier and the frequency band signal type received by the frequency band selection switch connected to the third amplifier are different. And / or, The amplifier includes a second amplifier and a fourth amplifier for processing high-frequency band signals, wherein the frequency band signal type received by the frequency band selection switch connected to the second amplifier and the frequency band signal type received by the frequency band selection switch connected to the fourth amplifier are different.

3. The radio frequency system according to claim 2, characterized in that, The output of the first amplifier is connected to any one of the following receivers through the output routing module: intermediate frequency digital receiver, high frequency digital receiver, and intermediate frequency main receiver; The output of the third amplifier is connected to any one of the following receivers via the output routing module: intermediate frequency digital receiver, high frequency digital receiver, intermediate frequency main receiver, and high frequency main receiver.

4. The radio frequency system according to claim 2, characterized in that, The output terminals of the second amplifier and the fourth amplifier are both connected to any one of the following receivers via the output routing module: intermediate frequency digital receiver, high frequency digital receiver, intermediate frequency main receiver, and high frequency main receiver.

5. The radio frequency system according to any one of claims 1 to 4, characterized in that, The output routing module includes a first routing switch and a second routing switch, wherein... The first input terminal of the first routing switch is connected to the output terminal of the second amplifier, the second input terminal of the first routing switch is connected to the output terminal of the third amplifier, the third input terminal of the first routing switch is connected to the output terminal of the fourth amplifier, the first output terminal of the first routing switch is connected to the second input terminal of the second routing switch, the second output terminal of the first routing switch is connected to the third input terminal of the second routing switch, and the third output terminal of the first routing switch is connected to the high-frequency main receiver in the receiver. The first input terminal of the second routing switch is connected to the output terminal of the first amplifier, the first output terminal of the second routing switch is connected to the intermediate frequency digital receiver in the receiver, the second output terminal of the second routing switch is connected to the high frequency digital receiver in the receiver, and the third output terminal of the second routing switch is connected to the intermediate frequency main receiver in the receiver.

6. The radio frequency system according to any one of claims 1 to 4, characterized in that, The output routing module includes a third routing switch and a fourth routing switch, wherein, The first input terminal of the third routing switch is connected to the output terminal of the first amplifier, the second input terminal of the third routing switch is connected to the output terminal of the second amplifier, the first output terminal of the third routing switch is connected to the intermediate frequency digital receiver in the receiver, and the second output terminal of the third routing switch is connected to the high frequency digital receiver in the receiver. The first input terminal of the fourth routing switch is connected to the output terminal of the third amplifier, the second input terminal of the fourth routing switch is connected to the output terminal of the fourth amplifier, the first output terminal of the fourth routing switch is connected to the intermediate frequency main receiver in the receiver, and the second output terminal of the third routing switch is connected to the high frequency main receiver in the receiver.

7. The radio frequency system according to claim 2, characterized in that, A routing input switch is also provided between the frequency band selection switch connected to the first amplifier and the frequency band selection switch connected to the second amplifier; The input terminal of the routing input switch is connected to a device for inputting a target frequency band signal. One output terminal of the routing input switch is connected to a frequency band input terminal of a frequency band selection switch connected to the first amplifier. The other output terminal of the routing input switch is connected to a frequency band input terminal of a frequency band selection switch connected to the second amplifier.

8. The radio frequency system according to any one of claims 1 to 4, characterized in that, The amplifier also includes a fifth amplifier for processing low-frequency band signals. The input of the fifth amplifier is connected to the band selection switch, and the output of the fifth amplifier is connected to the low-frequency receiver in the receiver.

9. A radio frequency chip, characterized in that, The radio frequency system included in any one of claims 1 to 8.

10. An electronic device, characterized in that, Includes the radio frequency chip as described in claim 9.

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