Radio frequency front-end circuit and intelligent terminal

Abstract

The application provides a radio frequency front-end circuit and a smart terminal, the radio frequency front-end circuit comprising: a first antenna for receiving a first signal; the first signal comprising a first low-frequency signal and a first medium-high-frequency signal; a first frequency division module connected with the first antenna, for separating and outputting the first low-frequency signal and the first medium-high-frequency signal; at least two first low-frequency filter modules corresponding to frequency bands at a low frequency, the first low-frequency filter modules being connected with the first frequency division module, for receiving the first low-frequency signal and filtering and outputting signals at corresponding frequency bands; and at least two first medium-high-frequency filter modules corresponding to frequency bands at a medium-high frequency, the first medium-high-frequency filter modules being connected with the first frequency division module, for receiving the first medium-high-frequency signal and filtering and outputting signals at corresponding frequency bands.The technical scheme of the application can process aggregated signals of different frequency bands without using complex and expensive devices, thereby reducing hardware cost.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a radio frequency front-end circuit and a smart terminal. Background Technology

[0002] For terminal devices targeting the global market, there are many carrier aggregation combinations required between frequency bands. In order to enable terminal devices to process various carrier aggregation signals and improve data transmission rates, it is necessary to design an RF front-end solution to achieve efficient processing of carrier aggregation signals.

[0003] In conceiving and implementing this application, the inventors discovered at least the following problems: In some solutions, multiplexers and diversity signal processing modules are used to perform frequency division processing on the aggregated signal; then the frequency-divided signal is filtered and transmitted to the corresponding module for further signal processing. However, using this solution requires high-cost components for the multiplexer and diversity signal processing module, thus increasing the cost of implementing the RF front-end solution.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] This application provides a radio frequency front-end circuit and a smart terminal to replace high-cost devices that use multiplexers and diversity signal processing modules to process aggregated signals, thereby reducing costs.

[0006] This application provides a radio frequency front-end circuit, including a first antenna for receiving a first signal; the first signal includes a first low-frequency signal and a first mid-to-high-frequency signal; a first frequency divider module connected to the first antenna for separating and outputting the first low-frequency signal and the first mid-to-high-frequency signal; at least two first low-frequency filtering modules corresponding to frequency bands under low frequencies, the first low-frequency filtering modules being connected to the first frequency divider module for receiving the first low-frequency signal and filtering and outputting the signal under their corresponding frequency band; and at least two first mid-to-high-frequency filtering modules corresponding to frequency bands under mid-to-high frequencies, the first mid-to-high-frequency filtering modules being connected to the first frequency divider module for receiving the first mid-to-high-frequency signal and filtering and outputting the signal under their corresponding frequency band.

[0007] Optionally, the first low-frequency signal and the first medium-high frequency signal are respectively the main carrier and the auxiliary carrier of the first carrier aggregation signal, or the first low-frequency signal and the first medium-high frequency signal are respectively the auxiliary carrier and the main carrier of the first carrier aggregation signal, and the first carrier aggregation signal is an aggregation signal of low frequency and medium-high frequency.

[0008] Optionally, the circuit further includes: a radio frequency transceiver; a first path is formed between the radio frequency transceiver and the first antenna; the first path includes at least two first sub-paths and at least two second sub-paths; the radio frequency transceiver is used to receive a first low-frequency signal through the first sub-path; or, to receive a first medium-high frequency signal through the second sub-path.

[0009] Optionally, the circuit further includes: a first switch and a second switch; the first switch and the second switch each include at least two output terminals; the output terminal of the first switch corresponds to the first sub-path and is connected to the first frequency division module and the first low-frequency filter module, for controlling the transmission of the first low-frequency signal to the first low-frequency filter module; and / or, the output terminal of the second switch corresponds to the second sub-path and is connected to the first frequency division module and the first medium-high frequency filter module, for controlling the transmission of the first medium-high frequency signal to the first medium-high frequency filter module.

[0010] Optionally, the first antenna is used to receive the main signal of the first signal; the circuit further includes a second antenna; the second antenna is used to receive the diversity signal of the first signal.

[0011] Optionally, the circuit further includes: a second frequency divider module, at least two second low-frequency filter modules, and at least two second mid-to-high-frequency filter modules; the second frequency divider module is connected to the second antenna and is used to separate and output the diversity signal of the first low-frequency signal and the diversity signal of the first mid-to-high-frequency signal; the at least two second low-frequency filter modules correspond to the frequency bands under low frequencies, and the second low-frequency filter modules are connected to the second frequency divider module, and are used to receive the diversity signal of the first low-frequency signal and filter and output the diversity signal under their corresponding frequency band; the at least two second mid-to-high-frequency filter modules correspond to the frequency bands under mid-to-high frequencies, and the second mid-to-high-frequency filter modules are connected to the second frequency divider module, and are used to receive the diversity signal of the first mid-to-high-frequency signal and filter and output the diversity signal under their corresponding frequency band.

[0012] Optionally, a second path is formed between the radio frequency transceiver and the second antenna; the second path includes at least two third sub-paths and / or at least two fourth sub-paths; the radio frequency transceiver is also used to receive diversity signals of the first low-frequency signal through the third sub-paths; and / or to receive diversity signals of the first medium-high frequency signal through the fourth sub-paths.

[0013] Optionally, the circuit further includes: a third switch and a fourth switch; the third switch and the fourth switch each include at least two output terminals; the output terminal of the third switch corresponds to the third sub-path and is connected to the second frequency division module and the second low-frequency filter module, and is used to control the diversity signal of the first low-frequency signal to be transmitted to the second low-frequency filter module; the output terminal of the fourth switch corresponds to the fourth sub-path and is connected to the second medium-high frequency filter module, and is used to control the diversity signal of the first medium-high frequency signal to be transmitted to the second medium-high frequency filter module.

[0014] Optionally, the first antenna is also used to receive a second signal; the second signal includes a second medium-high frequency signal and a third medium-high frequency signal; the second antenna is also used to receive the diversity signal of the second signal; the circuit further includes: at least two frequency band isolation matching modules; the at least two frequency band isolation matching modules are correspondingly connected to at least two output terminals of the fourth switch, and are used to control the impedance of the paths corresponding to the diversity signals of the second medium-high frequency signal and the third medium-high frequency signal, so that the diversity signals of the second medium-high frequency signal and the third medium-high frequency signal are transmitted to the second medium-high frequency filtering module of the corresponding frequency band.

[0015] Optionally, the second medium-high frequency signal and the third medium-high frequency signal are respectively the main carrier and the auxiliary carrier of the second carrier aggregation signal, or the second medium-high frequency signal and the third medium-high frequency signal are respectively the auxiliary carrier and the main carrier of the second carrier aggregation signal, and the second carrier aggregation signal is a medium-high frequency and medium-high frequency aggregation signal.

[0016] Optionally, the circuit further includes a third antenna and a fourth antenna; the third antenna is used to receive the diversity signal of the first signal and the diversity signal of the second signal; the fourth antenna is used to receive the diversity signal of the second signal.

[0017] Optionally, the circuit further includes: a third frequency divider module, at least two third low-frequency filter modules, and at least two third mid-to-high-frequency filter modules; the third frequency divider module is connected to the third antenna and is used to separate and output the diversity signal of the first low-frequency signal and the diversity signal of the first mid-to-high-frequency signal; the at least two third low-frequency filter modules correspond to the frequency bands under low frequencies, and the third low-frequency filter modules are connected to the third frequency divider module, and are used to receive the diversity signal of the first low-frequency signal and filter and output the diversity signal under their corresponding frequency band; the at least two third mid-to-high-frequency filter modules correspond to the frequency bands under mid-to-high frequencies, and the third mid-to-high-frequency filter modules are connected to the third frequency divider module, and are used to receive the diversity signal of the first mid-to-high-frequency signal and filter and output the diversity signal under their corresponding frequency band.

[0018] Optionally, a third path is formed between the radio frequency transceiver and the third antenna; the third path includes at least two fifth sub-paths and / or at least two sixth sub-paths; the radio frequency transceiver is used to receive the diversity signal of the first low-frequency signal through the fifth path; and / or to receive the diversity signal of the first medium-high frequency signal through the sixth sub-path.

[0019] Optionally, the circuit also includes: a fifth switch and a sixth switch; the output terminal of the fifth switch corresponds to the fifth sub-path and is connected to the third frequency division module and the third low-frequency filter module, and is used to control the diversity signal of the first low-frequency signal to be transmitted to the third low-frequency filter module;

[0020] The output of the sixth switch corresponds to the sixth sub-path and is connected to the third medium-high frequency filtering module. It is used to control the diversity signal transmission of the first medium-high frequency signal to the third medium-high frequency filtering module.

[0021] Optionally, a fourth path is formed between the radio frequency transceiver and the fourth antenna; the fourth path includes at least two seventh sub-paths; the radio frequency transceiver is also used to receive diversity signals of the second medium-high frequency signal and / or the third medium-high frequency signal through the seventh sub-paths.

[0022] Optionally, the circuit further includes: at least two fourth medium-high frequency filtering modules and a seventh switch; the at least two fourth medium-high frequency filtering modules correspond to the frequency bands under medium-high frequency, and the output terminals of the fourth medium-high frequency filtering modules are connected to the seventh switch via the seventh switch, for receiving the diversity signal of the second medium-high frequency signal or the diversity signal of the third medium-high frequency signal, and filtering and outputting the signal under its corresponding frequency band.

[0023] Optionally, the first antenna is used to receive the main signal of the second signal; the circuit further includes a fifth antenna; the fifth antenna is used to receive the main signal of the second signal.

[0024] Optionally, a fifth path is formed between the radio frequency transceiver and the fifth antenna; the fifth path includes at least two eighth sub-paths; the radio frequency transceiver is also used to receive the main signal of the second medium-high frequency signal and / or the main signal of the third medium-high frequency signal through the eighth sub-paths.

[0025] Optionally, the circuit further includes: at least two fifth intermediate-high frequency filtering modules and an eighth switch; the at least two fifth intermediate-high frequency filtering modules correspond to the frequency bands under intermediate-high frequency, and the fifth intermediate-high frequency filtering modules are connected to the fifth antenna through the output terminal of the eighth switch, for receiving the main signal of the second intermediate-high frequency signal or the main signal of the third intermediate-high frequency signal, and filtering and outputting the signal under its corresponding frequency band.

[0026] Optionally, the circuit further includes: a power amplifier; the power amplifier is connected to the radio frequency transceiver and is used to amplify the power of the main carrier transmission signal transmitted by the radio frequency transceiver and transmit it to the first antenna so that the first antenna transmits the amplified main carrier transmission signal.

[0027] This application also provides a smart terminal, including the radio frequency front-end circuit as described in any of the above claims.

[0028] The radio frequency front-end circuit and smart terminal provided in this application include a first antenna for receiving a first signal; the first signal includes a first low-frequency signal and a first mid-to-high-frequency signal; a first frequency divider module connected to the first antenna for separating and outputting the first low-frequency signal and the first mid-to-high-frequency signal; at least two first low-frequency filtering modules corresponding to frequency bands under low frequencies, the first low-frequency filtering modules being connected to the first frequency divider module for receiving the first low-frequency signal and filtering and outputting the signal under their corresponding frequency band; and at least two first mid-to-high-frequency filtering modules corresponding to frequency bands under mid-to-high frequencies, the first mid-to-high-frequency filtering modules being connected to the first frequency divider module for receiving the first mid-to-high-frequency signal and filtering and outputting the signal under their corresponding frequency band. In this application, a first frequency division module is used to perform frequency division processing on the first signal formed by the aggregation of the first low-frequency signal and the first mid-to-high-frequency signal received by the first antenna. The first signal is roughly divided and output as low-frequency and mid-to-high-frequency signals. Then, at least two low-frequency filtering modules and at least two mid-to-high-frequency filtering modules corresponding to the low-frequency and mid-to-high-frequency signals are used to filter the low-frequency and mid-to-high-frequency signals to their respective target frequency bands. Subsequently, signals from different low-frequency and mid-to-high-frequency bands are received and further processed to achieve the processing of carrier signals composed of signals from different frequency bands. The solution of this application can achieve the processing of aggregated signals without the use of expensive components, thus reducing hardware costs. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the structure of an example radio frequency front-end circuit of this application;

[0031] Figure 2 This is a schematic diagram of the structure of another example of the radio frequency front-end circuit in this application;

[0032] Figure 3 This is a schematic diagram of the hardware structure of a mobile terminal according to various embodiments of this application.

[0033] 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

[0034] 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.

[0035] 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.

[0036] 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, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word “if” as used herein may be interpreted as “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 a feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or at least two 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 may 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.

[0037] 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).”

[0038] It should be understood that the embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0039] 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.

[0040] For terminal devices targeting the global market, there are many carrier aggregation combinations required between frequency bands. In order to enable terminal devices to process various carrier aggregation signals and improve data transmission rates, it is necessary to design an RF front-end solution to achieve efficient processing of carrier aggregation signals.

[0041] Currently, many RF front-end solutions use multiplexers and diversity signal processing modules to divide the aggregated signal into frequencies. The divided signal is then filtered and transmitted to the corresponding module for further processing. However, this approach requires high-cost components for the multiplexer and diversity signal processing modules, which increases the cost of implementing the RF front-end solution.

[0042] The technical content provided in this application aims to solve the above-mentioned technical problems in related technologies. In the radio frequency front-end circuit and smart terminal provided in this application, the radio frequency front-end circuit includes a first antenna for receiving a first signal; the first signal includes a first low-frequency signal and a first mid-to-high-frequency signal; a first frequency divider module connected to the first antenna for separating and outputting the first low-frequency signal and the first mid-to-high-frequency signal; at least two first low-frequency filtering modules corresponding to frequency bands below the low frequency, the first low-frequency filtering modules being connected to the first frequency divider module for receiving the first low-frequency signal and filtering and outputting the signal in their corresponding frequency band; and at least two first mid-to-high-frequency filtering modules corresponding to frequency bands below the mid-to-high frequency, the first mid-to-high-frequency filtering modules being connected to the first frequency divider module for receiving the first mid-to-high-frequency signal and filtering and outputting the signal in their corresponding frequency band. In this application, a first frequency division module is used to perform frequency division processing on the first signal formed by the aggregation of the first low-frequency signal and the first mid-to-high-frequency signal received by the first antenna. The first signal is roughly divided and output as low-frequency and mid-to-high-frequency signals. Then, at least two low-frequency filtering modules and at least two mid-to-high-frequency filtering modules corresponding to the low-frequency and mid-to-high-frequency signals are used to filter the low-frequency and mid-to-high-frequency signals to their respective target frequency bands. Subsequently, signals from different low-frequency and mid-to-high-frequency bands are received and further processed to achieve the processing of carrier signals composed of signals from different frequency bands. The solution of this application can achieve the processing of aggregated signals without the use of expensive components, thus reducing hardware costs.

[0043] The technical solutions of this application are described in detail below with reference to embodiments. These embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. In the description of this application, unless otherwise expressly specified and limited, the terms should be broadly understood within the art. The embodiments of this application will now be described with reference to the accompanying drawings.

[0044] First Embodiment

[0045] Figure 1 This is a schematic diagram of the structure of an example radio frequency front-end circuit of this application; see reference. Figure 1 ; Radio frequency front-end circuit, including:

[0046] A first antenna 1 is used to receive a first signal; the first signal includes a first low-frequency signal and a first medium-high frequency signal.

[0047] The first frequency divider module 2 is connected to the first antenna 1 and is used to separate and output a first low-frequency signal and a first medium-high frequency signal.

[0048] At least two first low-frequency filtering modules 3 correspond to the frequency bands under low frequency. The first low-frequency filtering module is connected to the first frequency division module 2 and is used to receive the first low-frequency signal and filter and output the signal under its corresponding frequency band.

[0049] At least two first medium-high frequency filtering modules 4 are provided, each corresponding to a frequency band in the medium-high frequency range. The first medium-high frequency filtering module is connected to the first frequency divider module 2 and is used to receive the first medium-high frequency signal and filter and output the signal in its corresponding frequency band.

[0050] In one embodiment, the radio frequency front-end circuit includes: a first antenna 1, a first frequency divider module 2, at least two first low-frequency filter modules 3, and at least two first mid-to-high-frequency filter modules 4. The first antenna 1 is used to receive a first signal; the first signal includes a first low-frequency signal and a first mid-to-high-frequency signal. The first frequency divider module 2 is connected to the first antenna 1 and is used to separate and output the first low-frequency signal and the first mid-to-high-frequency signal. Optionally, the first frequency divider module 2 is a frequency divider for low-frequency and mid-to-high-frequency signals. It performs a coarse separation of the low-frequency and mid-to-high-frequency signals in the first signal received by the first antenna 1, and outputs the corresponding first low-frequency signal and first mid-to-high-frequency signal. The first low-frequency filter module 3 is connected to the first frequency divider module 2 and corresponds to the frequency band below the low frequency. The first low-frequency filter module 3 is used to receive the first low-frequency signal, filter the first low-frequency signal, and filter out the signal in its corresponding frequency band. Optionally, the first low-frequency filtering module can be a low-frequency duplexer; each first low-frequency filtering module 3 is a filtering module corresponding to a low-frequency signal; in practical applications, the low-frequency band signal includes multiple specific signals of different low-frequency bands; each first low-frequency filtering module 3 filters a signal corresponding to a specific low-frequency band. Optionally, the first mid-high frequency filtering module 4 is also connected to the first frequency divider module 2, corresponding to the mid-high frequency band. The first mid-high frequency filtering module 4 is used to receive the first mid-high frequency signal, filter the first mid-high frequency signal, and filter out the signal of its corresponding frequency band. Optionally, the first mid-high frequency filtering module can be a mid-high frequency duplexer; each first mid-high frequency filtering module 4 is a filtering module corresponding to a mid-high frequency signal; the mid-high frequency band signal includes multiple specific mid-high frequency band signals; each first mid-high frequency filtering module 4 filters a signal corresponding to a specific mid-high frequency band.

[0051] In this example, by setting up a first antenna to receive the first signal and a first frequency divider module for dividing low-frequency and mid-to-high-frequency signals; and by setting up multiple low-frequency filtering modules for filtering multiple different low-frequency band signals, and multiple mid-to-high-frequency filtering modules for filtering multiple mid-to-high-frequency band signals, frequency division and filtering processing of low-frequency and mid-to-high-frequency aggregated signals can be achieved; the signal data received by the antenna can be obtained from the signal after frequency division and filtering processing; the processing of aggregated signals can be achieved without using expensive components, reducing hardware costs.

[0052] Optionally, the first low-frequency signal and the first medium-high frequency signal are respectively the main carrier and the auxiliary carrier of the first carrier aggregation signal, or the first low-frequency signal and the first medium-high frequency signal are respectively the auxiliary carrier and the main carrier of the first carrier aggregation signal, and the first carrier aggregation signal is an aggregation signal of low frequency and medium-high frequency.

[0053] Optionally, the first low-frequency signal and the first mid-to-high-frequency signal are respectively the primary component carrier (PCC) and secondary component carrier (SCC) of the first carrier aggregation signal; or the first low-frequency signal and the first mid-to-high-frequency signal are respectively the secondary carrier and primary carrier of the first carrier aggregation signal; wherein the first carrier aggregation signal is an aggregation signal of low frequency and mid-to-high frequency. Optionally, the first carrier aggregation signal can be a signal aggregated from low frequency and mid-to-high frequency; if both the first low-frequency signal and the first mid-to-high-frequency signal can serve as the primary carrier, then the corresponding other signal serves as the secondary carrier. In carrier aggregation, the PCC is responsible for transmitting critical control signaling (such as scheduling information, system broadcasts, etc.); the PCC is the carrier that the terminal connects to first; the SCC is an additional aggregated carrier, used only to extend data transmission bandwidth and does not undertake control functions. The SCC can increase available spectrum resources and improve download / upload speeds; the SCC can be dynamically enabled or disabled according to network load and terminal requirements to optimize efficiency.

[0054] Optionally, the specific frequency band chosen for PCC and SCC is determined based on a combination of factors, including network planning, terminal capabilities, and channel conditions. Generally, PCC preferentially selects low-frequency bands (such as 700MHz, 800MHz, and 900MHz): low frequencies have strong penetration and wide coverage, ensuring stable network access for terminals; for example, Band 20 (800MHz) or Band 5 (850MHz) is commonly used as PCC in LTE (Long-Term Evolution). SCC typically selects high-frequency bands (such as 1.8GHz, 2.6GHz, and 3.5GHz): high frequencies have large bandwidth, providing higher data rates, but smaller coverage areas, suitable for supplementing capacity in hotspot areas; the choice between low-frequency and mid-to-high-frequency signals dynamically changes based on actual communication conditions and the capabilities of terminal equipment.

[0055] Please continue reading. Figure 1 The radio frequency front-end circuit also includes: a radio frequency transceiver 5; a first path is formed between the radio frequency transceiver 5 and the first antenna 1; the first path includes at least two first sub-paths and at least two second sub-paths; the radio frequency transceiver 5 is used to receive a first low-frequency signal through the first sub-path; or, to receive a first medium-high frequency signal through the second sub-path.

[0056] Optionally, the RF front-end circuit of this example further includes an RF transceiver 5; the RF transceiver 5 and the first antenna 1 form a first path; the first path includes at least two first sub-paths and at least two second sub-paths. The RF transceiver 5 receives a first low-frequency signal through the first sub-path and receives a first mid-to-high-frequency signal through the second sub-path. Optionally, the first path is a path for transmitting low-frequency signals and mid-to-high-frequency signals; the first path specifically includes at least two first sub-paths, and the at least two first sub-paths correspond to transmitting low-frequency signals of different frequency bands; the first path also specifically includes at least two second sub-paths, and the at least two second sub-paths correspond to transmitting mid-to-high-frequency signals of different frequency bands.

[0057] In this example, the RF transceiver receives signals of different frequency bands through different channels, and then transmits the received signals of different frequency bands to the data processing module of the terminal device. This enables the processing of the received carrier aggregation signals, reduces the hardware implementation requirements of the RF front-end circuit, and lowers the cost.

[0058] Optionally, the circuit further includes: a first switch 6 and a second switch 7; the first switch 6 and the second switch 7 each include at least two output terminals; the output terminal of the first switch 6 corresponds to the first sub-path and is connected to the first frequency division module 2 and the first low-frequency filter module 3, for controlling the transmission of the first low-frequency signal to the first low-frequency filter module 3; and / or, the output terminal of the second switch 7 corresponds to the second sub-path and is connected to the first frequency division module 2 and the first medium-high frequency filter module 4, for controlling the transmission of the first medium-high frequency signal to the first medium-high frequency filter module 4.

[0059] Optionally, the RF front-end circuit of this example further includes a first switch 6 and a second switch 7, wherein the first switch 6 and the second switch 7 each include at least two output terminals; optionally, the first switch 6 and the second switch 7 are single-ended RF switches. The at least two output terminals of the first switch 6 correspond to the first sub-path, and the first switch 6 is connected to the first frequency divider module 2 and the first low-frequency filter module 3, used to control the transmission of the first low-frequency signal to the first low-frequency filter module 3 for filtering. The output terminal of the second switch 7 corresponds to the second sub-path, and is also connected to the first frequency divider module 2 and the first mid-to-high frequency filter module 4, used to control the transmission of the first mid-to-high frequency signal to the first mid-to-high frequency filter module 4.

[0060] Optionally, refer to Figure 1 The first sub-path is used to transmit low-frequency signals. The first switch 6 is set on the first sub-path for transmitting low-frequency signals. The output terminal of the first switch 6 is connected to the first sub-path, and the input terminal of the first switch 6 is connected to the first frequency divider module 2. At the same time, the first low-frequency filter module 3 is set on the first sub-path. The output terminal of the first switch 6 is connected to the first low-frequency filter module 3. The first switch 6 is used to output the first low-frequency signal after the received signal has been divided by the first frequency divider module 2, and then transmit it to the first low-frequency filter module 3 of the corresponding low-frequency band for filtering. Optionally, the second sub-path is used to transmit medium- and high-frequency signals. The second switch 7 is disposed on the second sub-path for transmitting medium- and high-frequency signals. The output terminal of the second switch 7 is connected to the second sub-path, and the input terminal of the second switch 7 is also connected to the first frequency divider module 2. At the same time, the first medium- and high-frequency filtering modules 4 are disposed on the second sub-path. The output terminal of the second switch 7 is connected to the first medium- and high-frequency filtering module 4. The second switch 7 is used to divide the received signal from the first frequency divider module 2 and output the first medium- and high-frequency signal, which is then transmitted to the first medium- and high-frequency filtering module 4 of the corresponding optional medium- and high-frequency band for filtering.

[0061] In this example, by setting a first switch and a second switch, low-frequency signals and mid-to-high-frequency signals are transmitted to the low-frequency filtering module and the mid-to-high-frequency filtering module respectively, thereby achieving the separation and filtering of aggregated signals of different frequency bands, ensuring the accuracy of signal transmission, and reducing the cost of using the devices.

[0062] Optionally, the first antenna 1 is used to receive the main signal of the first signal; the circuit further includes: a second antenna 8; the second antenna 8 is used to receive the diversity signal of the first signal.

[0063] Optionally, the first signal includes a main signal and a diversity signal; the first antenna 1 is used to receive the main signal of the first signal. Therefore, the aforementioned first frequency divider module 2 is used to divide and output the main signal of the first low-frequency signal and the main signal of the first mid-to-high frequency signal; and the first low-frequency filter module 3 is used to filter the main signal of the first low-frequency signal, and the first mid-to-high frequency filter module 4 is used to filter the main signal of the first mid-to-high frequency signal; optionally, the RF transceiver 5 receives the filtered main signal of the first low-frequency signal and the main signal of the first mid-to-high frequency signal. Optionally, the RF front-end circuit of this example also includes a second antenna 8, which is used to receive the diversity signal of the first signal.

[0064] Optionally, the circuit further includes: a second frequency divider module 9, at least two second low-frequency filter modules 10, and at least two second medium-to-high frequency filter modules 11;

[0065] The second frequency divider module 9 is connected to the second antenna 8 and is used to separate the diversity signal of the first low-frequency signal and the diversity signal of the first medium-high frequency signal.

[0066] At least two second low-frequency filtering modules 10, corresponding to the frequency bands under low frequency, are connected to the second frequency divider module 9 and are used to receive the diversity signal of the first low-frequency signal and filter and output the diversity signal under its corresponding frequency band.

[0067] At least two second medium-high frequency filtering modules 11 are provided, corresponding to the frequency bands in the medium-high frequency range. The second medium-high frequency filtering modules are connected to the second frequency division module and are used to receive the diversity signal of the first medium-high frequency signal and filter and output the diversity signal in its corresponding frequency band.

[0068] Optionally, the RF front-end circuit of this example further includes a second frequency divider module 9; the second frequency divider module 9 is used to divide the diversity signal of the first signal. The second frequency divider module 9 is connected to the second antenna 8 and is used to separate and output the diversity signal of the first low-frequency signal and the diversity signal of the first mid-to-high-frequency signal; optionally, the second frequency divider module 2 is a frequency divider for low-frequency and mid-to-high-frequency signals. It first roughly separates the low-frequency and mid-to-high-frequency diversity signals in the diversity signal of the first signal received by the second antenna 8, and outputs the corresponding diversity signal of the first low-frequency signal and the diversity signal of the first mid-to-high-frequency signal. Optionally, by receiving the first signal in the form of a main signal and a diversity signal, the signal-to-noise ratio of the first signal is improved, and the signal quality is improved. At least two second low-frequency filtering modules 10 are connected to the second frequency divider module 9 and correspond to the frequency bands under low frequency. The second low-frequency filtering module 10 is used to receive the diversity signal of the first low-frequency signal, filter the diversity signal of the first low-frequency signal, and filter out the signal under its corresponding frequency band. Optionally, the second low-frequency filtering module can be a low-frequency filter; each second low-frequency filtering module 10 is a filtering module corresponding to a low-frequency signal. In practical applications, the diversity signal of the low-frequency band includes diversity signals of multiple specific low-frequency bands; each second low-frequency filtering module 10 filters the diversity signal of a specific low-frequency band. Optionally, multiple second mid-high frequency filtering modules 11 are also connected to the second frequency division module 9, corresponding to the frequency bands under mid-high frequencies. The second mid-high frequency filtering modules 11 are used to receive the diversity signal of the first mid-high frequency signal, filter the diversity signal of the first mid-high frequency signal, and filter out the signal under their corresponding frequency band. Optionally, the second mid-high frequency filter is a mid-high frequency filter; each second mid-high frequency filtering module 11 is a filtering module corresponding to a mid-high frequency signal. In practical applications, the diversity signal of the mid-high frequency band includes diversity signals of multiple specific mid-high frequency bands; each second mid-high frequency filtering module 11 filters the diversity signal of a specific mid-high frequency band.

[0069] In this example, by setting up a second antenna to receive the diversity signal of the first signal, and a second frequency divider module for dividing the diversity signals of low-frequency and mid-to-high-frequency signals; and further setting up a low-frequency filtering module for filtering diversity signals of multiple different low-frequency bands, and a mid-to-high-frequency filtering module for filtering diversity signals of multiple mid-to-high-frequency bands, signal processing of the diversity signals of low-frequency and mid-to-high-frequency aggregated signals is further realized, ensuring signal quality while reducing the hardware cost of the RF front-end circuit.

[0070] Optionally, a second path is formed between the radio frequency transceiver 5 and the second antenna 8; the second path includes at least two third sub-paths and / or at least two fourth sub-paths; the radio frequency transceiver 5 is also used to receive diversity signals of the first low-frequency signal through the third sub-paths; and / or to receive diversity signals of the first medium-high frequency signal through the fourth sub-paths.

[0071] Optionally, a second path is formed between the RF transceiver 5 and the second antenna 8; the second path includes at least two third sub-paths and / or at least two fourth sub-paths. The RF transceiver 5 receives the diversity signal of the first low-frequency signal through the third sub-path and receives the diversity signal of the first mid-to-high-frequency signal through the fourth sub-path. Optionally, the second path is a path for transmitting diversity signals of low-frequency signals and diversity signals of mid-to-high-frequency signals. Specifically, the second path includes at least two third sub-paths, which correspond to the transmission of diversity signals of low-frequency signals in different frequency bands; the second path also specifically includes at least two fourth sub-paths, which correspond to the transmission of diversity signals of mid-to-high-frequency signals in different frequency bands.

[0072] In this example, the RF transceiver receives diversity signals of different frequency bands through different channels, and then transmits the received diversity signals of different frequency bands to the data processing module of the terminal device to realize the processing of diversity signals of the received aggregated signals, thereby reducing the hardware implementation requirements of the RF front-end circuit and reducing costs.

[0073] Optionally, the circuit further includes: a third switch 12 and a fourth switch 13; the third switch 12 and the fourth switch 13 each include at least two output terminals; the output terminal of the third switch 12 corresponds to the third sub-path and is connected to the second frequency division module 9 and the second low-frequency filter module 10, and is used to control the diversity signal of the first low-frequency signal to be transmitted to the second low-frequency filter module 10; the output terminal of the fourth switch 13 corresponds to the fourth sub-path and is connected to the second medium-high frequency filter module 11, and is used to control the diversity signal of the first medium-high frequency signal to be transmitted to the second medium-high frequency filter module 11.

[0074] Optionally, the RF front-end circuit of this example further includes a third switch 12 and a fourth switch 13, each including at least two output terminals. In this example, the third switch 12 is a single-pole RF switch, and the fourth switch 13 is a multi-pole RF switch, enabling the diversity signal of the first mid-to-high frequency signal to be transmitted to the second mid-to-high frequency filtering module 11. The output terminal of the third switch 12 corresponds to the third sub-path and is connected to the second frequency divider module 9 and the second low-frequency filtering module 10, used to control the diversity signal of the first low-frequency signal to be transmitted to the second low-frequency filtering module 10 for filtering. The output terminal of the fourth switch 13 corresponds to the fourth sub-path and is also connected to the second frequency divider module 9 and the second mid-to-high frequency filtering module 11, used to control the diversity signal of the first mid-to-high frequency signal to be transmitted to the second mid-to-high frequency filtering module 11.

[0075] Optionally, refer to Figure 1The third sub-path is used to transmit the diversity signal of the low-frequency signal. The third switch 12 is set on the third sub-path for transmitting the diversity signal of the low-frequency signal. The output terminal of the third switch 12 is connected to the third sub-path, and the input terminal of the third switch 12 is connected to the second frequency divider module 9. At the same time, the second low-frequency filter module 10 is set on the third sub-path. The output terminal of the third switch 12 is connected to the second low-frequency filter module 10. The third switch 12 is used to transmit the diversity signal of the first low-frequency signal, which is received and processed by the second frequency divider module 9, to the second low-frequency filter module 10 of the corresponding low-frequency band for filtering. Optionally, the fourth sub-path is used to transmit the diversity signal of the mid-to-high frequency signal. The fourth switch 13 is disposed on the fourth sub-path for transmitting the diversity signal of the mid-to-high frequency signal. The output terminal of the fourth switch 13 is connected to the fourth sub-path, and the input terminal of the fourth switch 13 is also connected to the second frequency divider module 9. At the same time, the second mid-to-high frequency filter module 11 is disposed on the fourth sub-path. The output terminal of the fourth switch 13 is connected to the second mid-to-high frequency filter module 11. The fourth switch 13 is used to transmit the diversity signal of the first mid-to-high frequency signal, which is received and output after being frequency divided by the second frequency divider module 9, to the second mid-to-high frequency filter module 11 of the corresponding mid-to-high frequency band for filtering.

[0076] In this example, by setting the third and fourth switches, the diversity signals of low-frequency signals and mid-to-high-frequency signals are transmitted to the low-frequency filtering module and the mid-to-high-frequency filtering module respectively, thereby achieving the separation and filtering of diversity signals of aggregated signals of different frequency bands, ensuring the accuracy of signal transmission, and reducing the cost of device use.

[0077] Optionally, the first antenna 1 is also used to receive a second signal; the second signal includes a second medium-high frequency signal and a third medium-high frequency signal; the second antenna 8 is also used to receive the diversity signal of the second signal; the circuit further includes: at least two frequency band isolation matching modules 14; the at least two frequency band isolation matching modules 14 are correspondingly connected to at least two output terminals of the fourth switch 13, and are used to control the impedance of the paths corresponding to the diversity signals of the second medium-high frequency signal and the third medium-high frequency signal, so that the diversity signals of the second medium-high frequency signal and the third medium-high frequency signal are transmitted to the second medium-high frequency filtering module 11 of the corresponding frequency band.

[0078] Optionally, the first antenna 1 can also be used to receive a second signal; the second signal includes a second mid-to-high frequency signal and a third mid-to-high frequency signal; that is, the second signal is a mid-to-high frequency and mid-to-high frequency aggregated signal. In this case, the second antenna 8, which receives the diversity signal of the first signal, is also used to receive the diversity signal of the second signal; that is, the second antenna 8 is also used to receive the diversity signal of the mid-to-high frequency and mid-to-high frequency aggregated signal; that is, the second antenna in this example is used to receive the diversity signal of the signal when low frequency and mid-to-high frequency are aggregated, and can also receive the diversity signal of the signal when mid-to-high frequency and mid-to-high frequency are aggregated. The RF front-end circuit of this example also includes at least two frequency band isolation modules 14; see reference... Figure 1 At least two frequency band isolation matching modules 14 are connected to at least two output terminals of the fourth switch 13. The fourth switch 13 is a multi-opening RF switch that can simultaneously control the diversity signals of the second and third mid-to-high frequency signals to be transmitted to the second mid-to-high frequency filtering module 11 of the corresponding frequency band after the impedance of the corresponding mid-to-high frequency path is adjusted by the isolation matching module 14 of the corresponding frequency band, thereby realizing the processing of the diversity signals of mid-to-high frequency and mid-to-high frequency aggregated signals.

[0079] Optionally, when the second antenna receives diversity signals from mid-to-high frequency (MTHF) and MTHF aggregated signals, multiple RF switches are used to simultaneously transmit the two MTHF aggregated signals to the corresponding frequency band paths. A frequency band isolation matching module is installed on each path to adjust the impedance of each path, ensuring that each path is open-circuited relative to other paths; only signals within its own frequency band are allowed to pass through and are transmitted to the corresponding filtering frequency band for filtering. Optionally, the frequency band isolation matching module can be any impedance adjustment matching circuit module; this application does not impose specific limitations. Optionally, it can be an inductor-capacitor circuit.

[0080] In this example, by setting up frequency band isolation matching modules corresponding to the transmission paths of high-frequency band signals, and adjusting the impedance, diversity signals of multiple high-frequency bands can be transmitted. This solution can simultaneously process low-frequency and high-frequency aggregated signals, as well as high-frequency and mid-high-frequency aggregated signals, without the need for expensive components, thus reducing hardware costs.

[0081] Optionally, the second medium-high frequency signal and the third medium-high frequency signal are respectively the main carrier and the auxiliary carrier of the second carrier aggregation signal, or the second medium-high frequency signal and the third medium-high frequency signal are respectively the auxiliary carrier and the main carrier of the second carrier aggregation signal, and the second carrier aggregation signal is a medium-high frequency and medium-high frequency aggregation signal.

[0082] Optionally, the second and third mid-to-high frequency signals are respectively the primary and secondary carriers of the second carrier aggregation signal; or the second and third mid-to-high frequency signals are respectively the secondary and primary carriers of the second carrier aggregation signal; wherein the second carrier aggregation signal is an aggregation signal of mid-to-high frequency and mid-to-high frequency signals. In practical applications, there are also aggregations of mid-to-high frequency signals; in this case, any one of the mid-to-high frequency signals can be selected as the primary carrier, and the other mid-to-high frequency signal can be the secondary carrier.

[0083] Please continue to refer to Figure 1 When the second signal includes a second medium-high frequency signal and a third medium-high frequency signal, the second antenna 8 is used to receive the diversity signal of the second signal, and the first antenna 1 is used to receive the main signal of the second signal; the circuit also includes: a fifth antenna 15; the fifth antenna 15 is used to receive the main signal of the second signal.

[0084] Optionally, the RF front-end circuit of this example also includes a fifth antenna 15. For the mid-to-high frequency signal and the second signal aggregated from the mid-to-high frequency signal; at this time, the first antenna 1 is also used to receive the main signal of the second signal; at the same time, the fifth antenna 15 also receives the main signal of the second signal, that is, the fifth antenna 15 receives the main signal of the second mid-to-high frequency signal and the main signal of the third mid-to-high frequency signal.

[0085] In this example, when it is necessary to receive the mid-to-high frequency signal and the second signal aggregated from the mid-to-high frequency signal, the first antenna 1 is used to receive the main signal of the second signal. The first frequency divider module 2 connected to the first antenna 1 does not perform frequency division output operation on the main signal of the second signal. At this time, the fifth antenna 15 also receives the main signal of the second signal. Subsequently, the main signal of the second signal is filtered out to the corresponding frequency bands using the mid-to-high frequency filtering module. Then, the main signal of the mid-to-high frequency signal as the main carrier and the main signal of the mid-to-high frequency signal as the auxiliary carrier are transmitted on the second sub-path between the first antenna 1 and the RF transceiver, and on the corresponding path between the RF transceiver 5 and the fifth antenna, respectively.

[0086] Optionally, a fifth path is formed between the radio frequency transceiver 5 and the fifth antenna 15; the fifth path includes at least two eighth sub-paths; the radio frequency transceiver 5 is also used to receive the main signal of the second medium-high frequency signal and / or the main signal of the third medium-high frequency signal through the eighth sub-paths.

[0087] Optionally, a fifth path is formed between the RF transceiver 5 and the fifth antenna 15. The fifth path includes at least two eighth sub-paths; in this case, the eighth sub-paths are used only for transmitting mid-to-high frequency signals. The RF transceiver 5 receives the main signal of the second mid-to-high frequency signal and / or the main signal of the third mid-to-high frequency signal through at least two eighth sub-paths. Optionally, the fifth antenna is used only for receiving mid-to-high frequency signals as secondary carriers; therefore, when the main signal of the second mid-to-high frequency signal is a secondary carrier, the RF transceiver 5 receives the main signal of the second mid-to-high frequency signal; optionally, when the main signal of the third mid-to-high frequency signal is a secondary carrier, the RF transceiver 5 receives the main signal of the third mid-to-high frequency signal.

[0088] In this example, the RF transceiver receives the main signal of the second medium-high frequency signal and / or the main signal of the third medium-high frequency signal through at least two eighth sub-paths. Then, it transmits the main signal of the received auxiliary carrier and the main signal of the main carrier transmitted through the path corresponding to the first antenna to the corresponding data processing module, thereby realizing the processing of the main signal of the medium-high frequency and medium-high frequency aggregated signals, reducing the hardware requirements of the RF front-end implementation and reducing costs.

[0089] Optionally, the circuit further includes: at least two fifth intermediate-high frequency filtering modules 16 and an eighth switch 17; the eighth switch 17 includes an output terminal; the at least two fifth intermediate-high frequency filtering modules 16 correspond to the frequency bands under intermediate-high frequency, the fifth intermediate-high frequency filtering modules 16 are connected to the fifth antenna 15 through the output terminal of the eighth switch 17, and are used to receive the main signal of the second intermediate-high frequency signal or the main signal of the third intermediate-high frequency signal, and filter and output the signal under its corresponding frequency band.

[0090] Optionally, the RF front-end circuit of this example further includes at least two fifth mid-to-high frequency filtering modules 16 and an eighth switch 17; wherein, the fifth mid-to-high frequency filtering module 16 corresponds to the frequency band under mid-to-high frequency, and the fifth mid-to-high frequency filtering module 16 is connected to the fifth antenna 15 through the output terminal of the eighth switch 17, and is used to receive the main signal of the second mid-to-high frequency signal or the main signal of the third mid-to-high frequency signal, and filter and output the signal under its own frequency band. Optionally, the eighth switch 17 can also be a single-pole RF switch, and the fifth mid-to-high frequency filtering module can be a mid-to-high frequency filter.

[0091] In this example, by setting the eighth switch and the fifth mid-to-high frequency filtering module, the signals used as secondary carriers in the main signals of the received second and third mid-to-high frequency signals are filtered before being transmitted to the subsequent RF transceiver. At the same time, the signals used as primary carriers in the main signals of the second and third mid-to-high frequency signals received by the first antenna of the RF transceiver are filtered. This achieves the processing of mid-to-high frequency and mid-to-high frequency aggregated signals, and the aggregation processing can be achieved without the use of expensive components, thus reducing costs.

[0092] In the radio frequency front-end circuit provided in this embodiment, the radio frequency front-end circuit includes a first antenna for receiving a first signal; the first signal includes a first low-frequency signal and a first mid-to-high-frequency signal; a first frequency divider module connected to the first antenna for separating and outputting the first low-frequency signal and the first mid-to-high-frequency signal; at least two first low-frequency filtering modules corresponding to frequency bands under low frequency, the first low-frequency filtering modules being connected to the first frequency divider module for receiving the first low-frequency signal and filtering and outputting the signal under their corresponding frequency band; and at least two first mid-to-high-frequency filtering modules corresponding to frequency bands under mid-to-high frequency, the first mid-to-high-frequency filtering modules being connected to the first frequency divider module for receiving the first mid-to-high-frequency signal and filtering and outputting the signal under their corresponding frequency band.

[0093] In this application, a first frequency division module is used to perform frequency division processing on the first signal formed by the aggregation of the first low-frequency signal and the first mid-to-high-frequency signal received by the first antenna. The first signal is roughly divided and output as low-frequency and mid-to-high-frequency signals. Then, at least two low-frequency filtering modules and at least two mid-to-high-frequency filtering modules corresponding to the low-frequency and mid-to-high-frequency signals are used to filter the low-frequency and mid-to-high-frequency signals to their respective target frequency bands. Subsequently, signals from different low-frequency and mid-to-high-frequency bands are received and further processed to achieve the processing of carrier signals composed of signals from different frequency bands. The solution of this application can achieve the processing of aggregated signals without the use of expensive components, thus reducing hardware costs.

[0094] Second Embodiment

[0095] Optionally, Figure 2 This is a schematic diagram of the structure of another example of the radio frequency front-end circuit in this application; Figure 2 For the aforementioned Figure 1 Another implementation method for realizing the path corresponding to the second antenna for receiving diversity signals; such as Figure 2 As shown, the radio frequency front-end circuit includes a first antenna 1, a first frequency divider module 2, at least two first low-frequency filter modules 3, at least two first medium-high frequency filter modules 4, a radio frequency transceiver 5, a first switch 6, and a second switch 7.

[0096] Reference Figure 2 In conjunction with the aforementioned example, the first antenna 1 is used to receive the main signal of the first signal and the main signal of the second signal; for the main signal of the first signal, the first antenna 1 separates the received main signal of the first signal into the main signal of the first low-frequency signal and the main signal of the first mid-high frequency signal through the first frequency division module 2; and the first switch 6 and the second switch 7, as well as the first low-frequency filtering module 3 and the first mid-high frequency filtering module 4 corresponding to the frequency band, filter the signals of the corresponding frequency band and output the signals of their corresponding frequency bands, and transmit them to the radio frequency transceiver 5.

[0097] Regarding the main signal of the second signal, in conjunction with the aforementioned example, the first antenna 1 receives the main signal of the second signal and filters it through the second switch 7 and the first medium-high frequency filtering module 4 corresponding to the frequency band, filtering the main signal of the second medium-high frequency signal or the main signal of the third medium-high frequency signal that serves as the main carrier in the main signal of the second signal; at the same time, the fifth antenna 15 receives the main signal of the second signal and filters it through the eighth switch 17 and the fifth medium-high frequency filtering module, filtering the main signal of the third medium-high frequency signal or the main signal of the second medium-high frequency signal that serves as the secondary carrier in the main signal of the second signal; and transmits the main signal of the second medium-high frequency signal and the main signal of the third medium-high frequency signal to the radio frequency transceiver 5.

[0098] Optionally, the diversity signal of the first signal and the diversity signal of the second signal; refer to Figure 2 The circuit also includes a third antenna 18 and a fourth antenna 19; the third antenna 18 is used to receive the diversity signal of the first signal and the diversity signal of the second signal; the fourth antenna 19 is used to receive the diversity signal of the second signal.

[0099] Optionally, for the diversity signal of the first signal, the third antenna 18 is used to receive the diversity signal of the first signal; that is, the diversity signal of the first low-frequency signal and the diversity signal of the first mid-to-high-frequency signal. For the diversity signal of the second signal, the fourth antenna 19 is used to receive the diversity signal of the second signal, that is, the fourth antenna 19 is only used to receive the diversity signal of the second mid-to-high-frequency signal or the diversity signal of the third mid-to-high-frequency signal.

[0100] Optionally, the radio frequency circuit further includes: a third frequency divider module 20, at least two third low-frequency filter modules 21, and at least two third mid-to-high-frequency filter modules 22; the third frequency divider module 20 is connected to the third antenna 18 and is used to separate and output the diversity signal of the first low-frequency signal and the diversity signal of the first mid-to-high-frequency signal. Optionally, at least two third low-frequency filter modules 21 correspond to frequency bands under low frequencies, and the third low-frequency filter modules 21 are connected to the third frequency divider module 20, used to receive the diversity signal of the first low-frequency signal and filter and output the diversity signal under their corresponding frequency band; optionally, at least two third mid-to-high-frequency filter modules 22 correspond to frequency bands under mid-to-high frequencies, and the third mid-to-high-frequency filter modules 22 are connected to the third frequency divider module 20, used to receive the diversity signal of the first mid-to-high-frequency signal and filter and output the diversity signal under their corresponding frequency band.

[0101] The third frequency divider module 20 is connected to the third antenna 18 and is used to separate the diversity signal of the first low-frequency signal and the diversity signal of the first mid-to-high-frequency signal. Optionally, the third frequency divider module 20 is a frequency divider for low-frequency and mid-to-high-frequency signals. It performs a coarse separation on the diversity signal of the first signal received by the third antenna 18, which is a combination of low-frequency and mid-to-high-frequency signals, and outputs the corresponding diversity signals of the first low-frequency signal and the first mid-to-high-frequency signal. At least two third low-frequency filtering modules 21 are connected to the third frequency divider module 20 and correspond to the frequency bands under the low frequency. The third low-frequency filtering module 21 is used to receive the diversity signal of the first low-frequency signal, filter the diversity signal of the first low-frequency signal, and filter out the diversity signal under its corresponding frequency band. Optionally, the first low-frequency filtering module can be a low-frequency filter; each third low-frequency filtering module 21 is a filtering module corresponding to the low-frequency signal.

[0102] Optionally, the low-frequency band signal also includes signals from multiple specific low-frequency bands; each third low-frequency filtering module 21 filters the diversity signal corresponding to a specific low-frequency band. Optionally, at least two third mid-high frequency filtering modules 22 are also connected to the third frequency division module 20, corresponding to the mid-high frequency bands. The third mid-high frequency filtering module 22 receives the diversity signal of the first mid-high frequency signal, filters the diversity signal of the first mid-high frequency signal, and filters out the signal in its corresponding frequency band. Optionally, the third mid-high frequency filtering module can be a mid-high frequency filter; each third mid-high frequency filtering module 22 is a filtering module corresponding to the mid-high frequency diversity signal; the mid-high frequency band signal also includes signals from multiple specific mid-high frequency bands; each third mid-high frequency filtering module 22 filters the signal corresponding to a specific mid-high frequency band.

[0103] In this example, by setting a third antenna to receive the diversity signal of the first signal and a third frequency divider module for dividing low-frequency and mid-to-high-frequency signals, and by setting multiple low-frequency filtering modules to filter diversity signals of multiple different low-frequency bands, frequency division filtering processing of diversity signals of low-frequency and mid-to-high-frequency aggregated signals can be realized, reducing the hardware cost of the RF front-end circuit.

[0104] Optionally, a third path is formed between the radio frequency transceiver 5 and the third antenna 18; the third path includes at least two fifth sub-paths and at least two sixth sub-paths; the radio frequency transceiver 5 is also used to receive diversity signals of the first low-frequency signal through the fifth sub-paths; and / or receive diversity signals of the first medium-high frequency signal through the sixth sub-paths.

[0105] Optionally, a third path is formed between the radio frequency transceiver 5 and the third antenna 18; the third path includes at least two fifth sub-paths and at least two sixth sub-paths. The radio frequency transceiver 5 receives the diversity signal of the first low-frequency signal through the fifth sub-path and / or receives the diversity signal of the first mid-to-high-frequency signal through the sixth path. Optionally, the third path is a path for transmitting diversity signals of low-frequency signals and mid-to-high-frequency signals; the third path specifically includes at least two fifth sub-paths, which correspond to the transmission of low-frequency diversity signals of different frequency bands; the third path also specifically includes at least two sixth sub-paths, which correspond to the transmission of mid-to-high-frequency diversity signals of different frequency bands.

[0106] In this example, the RF transceiver receives diversity signals of different frequency bands through different channels, and then transmits the received diversity signals of different frequency bands to the data processing module of the terminal device. This enables the processing of diversity signals of the received aggregated signal, reduces the hardware requirements of the RF front-end circuit, and lowers the cost.

[0107] Optionally, the circuit further includes: a fifth switch 23 and a sixth switch 24; the output terminal of the fifth switch 23 corresponds to the fifth sub-path and is connected to the third frequency divider module 20 and the third low-frequency filter module 21, and is used to control the diversity signal of the first low-frequency signal to be transmitted to the third low-frequency filter module 21; the output terminal of the sixth switch 24 corresponds to the sixth sub-path and is connected to the third medium-high frequency filter module 22, and is used to control the diversity signal of the first medium-high frequency signal to be transmitted to the third medium-high frequency filter module 22.

[0108] Optionally, the RF front-end circuit of this example further includes a fifth switch 23 and a sixth switch 24, wherein the fifth switch 23 and the sixth switch 24 each include an output terminal; optionally, the fifth switch 23 and the sixth switch 24 are single-ended RF switches. The output terminal of the fifth switch 23 corresponds to the fifth sub-path, and the fifth switch 23 is connected to the third frequency divider module 20 and the third low-frequency filter module 21, used to control the diversity signal of the first low-frequency signal to be transmitted to the third low-frequency filter module 21 for filtering. The output terminal of the sixth switch 24 corresponds to the sixth sub-path, and is also connected to the third frequency divider module 20 and the third mid-to-high frequency filter module 22, used to control the diversity signal of the first mid-to-high frequency signal to be transmitted to the third mid-to-high frequency filter module 22. Optionally, refer to Figure 2The fifth sub-path is used to transmit the diversity signal of the low-frequency signal. The fifth switch 23 is set on the fifth sub-path for transmitting the low-frequency signal. The output terminal of the fifth switch 23 is connected to the fifth sub-path, and the input terminal of the fifth switch 23 is connected to the third frequency divider module 20. At the same time, the third low-frequency filter module 21 is set on the fifth sub-path. The output terminal of the fifth switch 23 is connected to the third low-frequency filter module 21. The fifth switch 23 is used to transmit the received diversity signal, which is the first low-frequency signal output after being frequency divided by the third frequency divider module 20, to the third low-frequency filter module 21 of the corresponding low-frequency band for filtering. Optionally, the sixth sub-path is used to transmit the diversity signal of the mid-to-high frequency signal. The sixth switch 24 is set on the sixth sub-path for transmitting the diversity signal of the mid-to-high frequency signal. The output terminal of the sixth switch 24 is connected to the sixth sub-path, and the input terminal of the sixth switch 24 is also connected to the third frequency divider module 20. At the same time, the third mid-to-high frequency filter module 22 is set on the sixth sub-path. The output terminal of the sixth switch 24 is connected to the third mid-to-high frequency filter module 21. The sixth switch 24 is used to divide the received signal from the third frequency divider module 20 and output the diversity signal of the first mid-to-high frequency signal, which is then transmitted to the third mid-to-high frequency filter module 22 of the corresponding mid-to-high frequency band for filtering.

[0109] In this example, by setting the fifth and sixth switches, the diversity signals of low-frequency and mid-to-high-frequency signals are transmitted to the low-frequency filtering module and the mid-to-high-frequency filtering module respectively, thereby achieving the separation and filtering of aggregated signals of different frequency bands, ensuring the accuracy of signal transmission, and reducing the cost of device use.

[0110] Optionally, a fourth path is formed between the radio frequency transceiver 5 and the fourth antenna 19; the fourth path includes at least two seventh sub-paths; the radio frequency transceiver 5 is also used to receive diversity signals of the second medium-high frequency signal and / or the third medium-high frequency signal through the seventh path.

[0111] Optionally, a fourth path is formed between the RF transceiver 5 and the fourth antenna 19. The fourth path includes at least two seventh sub-paths; in this case, the seventh sub-paths are used only for transmitting diversity signals of mid-to-high frequency signals. The RF transceiver 5 receives diversity signals of the second mid-to-high frequency signal and / or the third mid-to-high frequency signal via the seventh sub-paths. Optionally, the fourth antenna is used only for receiving diversity signals of mid-to-high frequency signals used as secondary carriers; therefore, when the diversity signal of the second mid-to-high frequency signal is a secondary carrier, the RF transceiver 5 receives the diversity signal of the second mid-to-high frequency signal; optionally, when the diversity signal of the third mid-to-high frequency signal is a secondary carrier, the RF transceiver 5 receives the diversity signal of the third mid-to-high frequency signal.

[0112] In this example, the RF transceiver receives the diversity signal of the second medium-high frequency signal and / or the diversity signal of the third medium-high frequency signal through the seventh sub-path. Then, it transmits the received diversity signal of the auxiliary carrier and the diversity signal of the main carrier transmitted through the corresponding path of the first antenna to the data processing module, thereby realizing the processing of diversity signals of medium-high frequency and medium-high frequency aggregated signals. This reduces the hardware requirements for the RF front-end implementation and lowers the cost.

[0113] Optionally, the circuit also includes at least two fourth high-frequency filter modules 25 and a seventh switch 26;

[0114] At least two fourth intermediate-high frequency filtering modules 25, corresponding to the frequency bands under intermediate-high frequency, are connected to the seventh switch 26 through the output terminal of the seventh switch 26. They are used to receive the diversity signal of the second intermediate-high frequency signal or the diversity signal of the third intermediate-high frequency signal, and filter and output the signal under its corresponding frequency band.

[0115] Optionally, see Figure 2 The RF front-end circuit of this example also includes at least two fourth mid-to-high frequency filtering modules 25 and a seventh switch 26. The fourth mid-to-high frequency filtering module 25 corresponds to the mid-to-high frequency band. The fourth mid-to-high frequency filtering module 25 is connected to the fourth antenna 19 via the output of the seventh switch 26. It is used to receive the diversity signal of the second mid-to-high frequency signal or the diversity signal of the third mid-to-high frequency signal, and to filter and output the signal within its own frequency band. Optionally, the seventh switch can also be a single-pole RF switch, and the fourth mid-to-high frequency filtering module can be a mid-to-high frequency filter.

[0116] In this example, by setting a seventh switch and a fourth mid-to-high frequency (MT / HF) filtering module, the diversity signals used as secondary carriers in the received second and third MT / HF diversity signals are filtered before being transmitted to the subsequent RF transceiver. Simultaneously, the second or third MT / HF diversity signal used as the primary carrier in the second and third MT / HF diversity signals received by the RF transceiver from the first antenna is also filtered. This achieves processing of MT / HF and MT / HF aggregated signals, eliminating the need for expensive components and reducing costs.

[0117] Reference Figure 1 and Figure 2 The circuit also includes a power amplifier 27; the power amplifier 27 is connected to the radio frequency transceiver 5 and is used to amplify the power of the main carrier transmission signal transmitted by the radio frequency transceiver 5 and transmit it to the first antenna 1 so that the first antenna 1 transmits the main carrier transmission signal with amplified power.

[0118] Optionally, the RF front-end circuit of this application further includes a power amplifier 27, which is connected to an RF transceiver. The power amplifier 27 amplifies the signal used as the main carrier from the aggregated signals of different frequency bands, and then transmits the amplified main carrier signal to the first antenna 1, so that the first antenna 1 transmits the amplified main carrier signal. Optionally, the smart terminal transmits the main carrier signal to the base station, and the base station receives the signal transmitted by the smart terminal and transmits a corresponding receive signal to the smart terminal; therefore, the power amplifier 27 amplifies the signal used as the main carrier before transmitting it to the corresponding base station via the first antenna 1.

[0119] Based on the previous example, the processing of aggregated signals in different frequency bands can be achieved by using the third and fourth antennas, as well as the frequency division module, filtering module and switch on the corresponding path; this further reduces the hardware implementation cost of the RF front-end circuit.

[0120] Third Embodiment

[0121] This application also provides a smart terminal, which includes the radio frequency front-end circuit in any of the above embodiments. The radio frequency front-end circuit has been described in detail in the above embodiments and will not be repeated here.

[0122] Alternatively, 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, and other mobile terminals.

[0123] 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.

[0124] Please see Figure 3 This is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of this application. The mobile terminal 300 may include: an RF (Radio Frequency) unit 301, a WiFi module 302, an audio output unit 303, an A / V (Audio / Video) input unit 304, a sensor 305, a display unit 306, a user input unit 307, an interface unit 308, a memory 309, a processor 310, and a power supply 311, etc. Those skilled in the art will understand that... Figure 3The 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.

[0125] The following is combined Figure 3 A detailed introduction to each component of the mobile terminal:

[0126] The radio frequency (RF) unit 301 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 310; additionally, it transmits uplink data to the base station. Typically, the RF unit 301 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 RF unit 301 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), 5G, and 6G.

[0127] WiFi is a short-range wireless transmission technology. Mobile terminals, through the WiFi module 302, can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 3 WiFi module 302 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 this application.

[0128] The audio output unit 303 can convert audio data received by the radio frequency unit 301 or the WiFi module 302 or stored in the memory 309 into audio signals and output them as sound when the mobile terminal 300 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, etc. Furthermore, the audio output unit 303 can also provide audio output related to specific functions performed by the mobile terminal 300 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 303 may include a speaker, earpiece, buzzer, etc.

[0129] The A / V input unit 304 is used to receive audio or video signals. The A / V input unit 304 may include a graphics processing unit (GPU) 3041 and a microphone 3042. The GPU 3041 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 306. The image frames processed by the GPU 3041 can be stored in the memory 309 (or other storage media) or transmitted via the radio frequency unit 301 or the WiFi module 302. The microphone 3042 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 301 in telephone call mode. The microphone 3042 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.

[0130] The mobile terminal 300 also includes at least one sensor 305, 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 3061 according to the ambient light level, and the proximity sensor can turn off the display panel 3061 and / or backlight when the mobile terminal 300 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.

[0131] The display unit 306 is used to display information input by the user or information provided to the user. The display unit 306 may include a display panel 3061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0132] User input unit 307 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 307 may include touch panel 3071 and other input devices 3072. Touch panel 3071, also known as touch screen, can collect touch operations performed by the user on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 3071), and drive corresponding connection devices according to a pre-set program. Touch panel 3071 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, and sends it to processor 710, and can also receive and execute commands sent by processor 310. In addition, touch panel 3071 can be implemented using at least two types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 3071, the user input unit 307 may also include other input devices 3072. Optionally, other input devices 3072 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.

[0133] Optionally, the touch panel 3071 may cover the display panel 3061. When the touch panel 3071 detects a touch operation on or near it, it transmits the information to the processor 310 to determine the type of touch event. Subsequently, the processor 310 provides corresponding visual output on the display panel 3061 based on the type of touch event. Although in Figure 3 In this embodiment, the touch panel 3071 and the display panel 3061 are two independent components to realize the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 3071 and the display panel 3061 can be integrated to realize the input and output functions of the mobile terminal. The specific implementation is not limited here.

[0134] Interface unit 308 serves as an interface through which at least one external device can connect to mobile terminal 300. 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 308 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 300, or it may be used to transmit data between mobile terminal 300 and the external device.

[0135] The memory 309 can be used to store software programs and various data. The memory 309 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 309 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.

[0136] The processor 310 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 309, and by calling data stored in the memory 309, it performs various functions and processes data of the mobile terminal, thereby providing overall monitoring of the mobile terminal. The processor 310 may include one or more processing units; preferably, the processor 310 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 310.

[0137] The mobile terminal 300 may also include a power supply 311 (such as a battery) that supplies power to various components. Preferably, the power supply 311 can be logically connected to the processor 310 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.

[0138] although Figure 3As not shown, the mobile terminal 300 may also include a Bluetooth module, etc., which will not be elaborated here. 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, those skilled in the art will recognize that 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.

[0139] 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.

[0140] The units in the device of this application embodiment can be merged, divided, and deleted according to actual needs.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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 front-end circuit, characterized in that, include: A first antenna is used to receive a first signal; the first signal includes a first low-frequency signal and a first medium-high frequency signal. The first frequency divider module is connected to the first antenna and is used to separate and output the first low-frequency signal and the first medium-high frequency signal. At least two first low-frequency filtering modules, corresponding to frequency bands in the low-frequency range, are connected to the first frequency divider module and are used to receive the first low-frequency signal and filter and output the signal in the corresponding frequency band. At least two first medium-high frequency filtering modules are provided, each corresponding to a frequency band in the medium-high frequency range. The first medium-high frequency filtering module is connected to the first frequency division module and is used to receive the first medium-high frequency signal and filter and output the signal in the corresponding frequency band.

2. The circuit of claim 1, wherein, The circuit also includes a radio frequency transceiver; The radio frequency transceiver and the first antenna form a first path; the first path includes at least two first sub-paths and at least two second sub-paths. The radio frequency transceiver is used to receive the first low-frequency signal through the first sub-path; or to receive the first medium-high frequency signal through the second sub-path.

3. The circuit of claim 2, wherein, The circuit further includes a first switch and a second switch; the first switch and the second switch each include at least two output terminals; The output terminal of the first switch corresponds to the first sub-path and is connected to the first frequency division module and the first low-frequency filter module, and is used to control the transmission of the first low-frequency signal to the first low-frequency filter module. And / or, The output terminal of the second switch corresponds to the second sub-path and is connected to the first frequency division module and the first medium-high frequency filtering module, and is used to control the transmission of the first medium-high frequency signal to the first medium-high frequency filtering module.

4. The circuit of claim 3, wherein, It also includes at least one of the following: The first antenna is used to receive the main signal of the first signal; The first antenna is used to receive the main signal of the second signal; the second signal includes a second medium-high frequency signal and a third medium-high frequency signal; The circuit also includes a second antenna, which is used to receive the diversity signal of the first signal; The second antenna is also used to receive diversity signals of the second signal; The circuit also includes a third antenna, which is used to receive the diversity signal of the first signal; The third antenna is also used to receive the diversity signal of the second signal; The circuit also includes a fourth antenna for receiving the diversity signal of the second signal; The circuit also includes a fifth antenna for receiving the main signal of the second signal.

5. The circuit of claim 4, wherein, Includes at least one of the following: A second path is formed between the radio frequency transceiver and the second antenna, the second path including at least two third sub-paths and / or at least two fourth sub-paths; the radio frequency transceiver is used to receive the diversity signal of the first low-frequency signal through the third sub-path; and / or, to receive the diversity signal of the first medium-high frequency signal through the fourth sub-path; A third path is formed between the radio frequency transceiver and the third antenna, the third path including at least two fifth sub-paths and / or at least two sixth sub-paths; the radio frequency transceiver is used to receive the diversity signal of the first low-frequency signal through the fifth sub-path; and / or, to receive the diversity signal of the first medium-high frequency signal through the sixth sub-path; A fourth path is formed between the radio frequency transceiver and the fourth antenna, the fourth path including at least two seventh sub-paths; the radio frequency transceiver is used to receive the diversity signal of the second medium-high frequency signal and / or the diversity signal of the third medium-high frequency signal through the seventh sub-paths; A fifth path is formed between the radio frequency transceiver and the fifth antenna, and the fifth path includes at least two eighth sub-paths; the radio frequency transceiver is used to receive the main signal of the second medium-high frequency signal and / or the main signal of the third medium-high frequency signal through the eighth sub-paths.

6. The circuit of claim 5, wherein, Includes at least one of the following: The circuit further includes a second frequency divider module, which is connected to the second antenna and is used to separate the diversity signal of the first low-frequency signal and the diversity signal of the first medium-high frequency signal. The circuit further includes at least two second low-frequency filtering modules, each corresponding to a frequency band in the low-frequency range. The second low-frequency filtering modules are connected to the second frequency divider module and are used to receive the diversity signal of the first low-frequency signal and filter and output the diversity signal in the corresponding frequency band. The circuit further includes at least two second medium-high frequency filtering modules, each corresponding to a frequency band in the medium-high frequency range. The second medium-high frequency filtering modules are connected to the second frequency division module and are used to receive the diversity signal of the first medium-high frequency signal and filter and output the diversity signal in the corresponding frequency band. The circuit also includes a third frequency divider module, which is connected to the third antenna and is used to separate the diversity signal of the first low-frequency signal and the diversity signal of the first medium-high frequency signal. The circuit further includes at least two third low-frequency filtering modules, each corresponding to a frequency band in the low-frequency range. The third low-frequency filtering modules are connected to the third frequency divider module and are used to receive the diversity signal of the first low-frequency signal and filter and output the diversity signal in the corresponding frequency band. The circuit further includes at least two third mid-to-high frequency filtering modules, each corresponding to a frequency band in the mid-to-high frequency range. The third mid-to-high frequency filtering modules are connected to the third frequency divider module and are used to receive the diversity signal of the first mid-to-high frequency signal and filter and output the diversity signal in the corresponding frequency band.

7. The circuit of claim 6, wherein, Includes at least one of the following: The circuit also includes a third switch, the output of which corresponds to the third sub-path and is connected to the second frequency division module and the second low-frequency filter module, for controlling the diversity signal of the first low-frequency signal to be transmitted to the second low-frequency filter module; The circuit also includes a fourth switch, the output of which corresponds to the fourth sub-path and is connected to the second medium-high frequency filtering module, for controlling the diversity signal of the first medium-high frequency signal to be transmitted to the second medium-high frequency filtering module; The circuit also includes a fifth switch, the output of which corresponds to the fifth sub-path and is connected to the third frequency division module and the third low-frequency filter module, for controlling the diversity signal of the first low-frequency signal to be transmitted to the third low-frequency filter module; The circuit also includes a sixth switch, the output of which corresponds to the sixth sub-path and is connected to the third medium-high frequency filtering module, for controlling the diversity signal of the first medium-high frequency signal to be transmitted to the third medium-high frequency filtering module; The circuit further includes at least two fourth medium-high frequency filtering modules and a seventh switch; the at least two fourth medium-high frequency filtering modules correspond to the frequency bands under medium-high frequency, and the fourth medium-high frequency filtering modules are connected to the seventh switch through the output terminal of the seventh switch, for receiving the diversity signal of the second medium-high frequency signal or the diversity signal of the third medium-high frequency signal, and filtering and outputting the signal under the corresponding frequency band; The circuit further includes at least two fifth medium-high frequency filtering modules and an eighth switch; the at least two fifth medium-high frequency filtering modules correspond to the frequency bands under medium-high frequency, and the fifth medium-high frequency filtering modules are connected to the fifth antenna through the output terminal of the eighth switch, for receiving the main signal of the second medium-high frequency signal or the main signal of the third medium-high frequency signal, and filtering and outputting the signal under the corresponding frequency band.

8. The circuit of claim 7, wherein, The circuit also includes at least two frequency band isolation matching modules; At least two of the frequency band isolation matching modules are connected to at least two output terminals of the fourth switch to control the impedance of the paths corresponding to the diversity signals of the second and third medium-high frequency signals, so that the diversity signals of the second and third medium-high frequency signals are transmitted to the second medium-high frequency filtering module of the corresponding frequency band.

9. The circuit of any one of claims 2 to 8, wherein, The circuit also includes a power amplifier; The power amplifier is connected to the radio frequency transceiver and is used to amplify the power of the main carrier transmission signal transmitted by the radio frequency transceiver and then transmit it to the first antenna so that the first antenna can transmit the amplified main carrier transmission signal.

10. A smart terminal, characterized by Includes the radio frequency front-end circuit as described in any one of claims 1 to 9.

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