Radio frequency circuit, electronic equipment and signal processing method and device thereof

Abstract

The embodiment of the invention discloses a radio frequency circuit which comprises a transceiver, a transceiving module, a frequency conversion module, an antenna assembly and a processor, the transceiver, the transceiving module, the frequency conversion module and the antenna assembly are connected in sequence, the frequency conversion module is in communication connection with the processor, and the frequency conversion module is used for receiving a first target frequency from the processor, the frequency conversion module is used for performing frequency conversion on a receiving signal from the antenna assembly to obtain a signal of a first target frequency, the frequency conversion module is used for receiving a second target frequency from the processor and performing frequency conversion on a sending signal from the transceiving module to obtain a signal of the second target frequency, and the first target frequency is a frequency suitable for the receiving module; the second target frequency is the frequency required for communication with the receiving end sending the signal. The embodiment of the invention also provides electronic equipment, and a signal processing method and device.

Description

Technical Field

[0001] The present application relates to radio frequency technology, and in particular to a radio frequency circuit, electronic equipment, and a signal processing method and device thereof. Background Art

[0002] In the related technology, the RF architecture requires a power amplifier (PA) chip suitable for low frequency (0.6GHz-1GHz), a PA chip suitable for medium and high frequency (1.71GHz-2.69GHz), a PA chip suitable for very high frequency (3.3GHz-5GHz), a hierarchical receiving module suitable for low frequency and medium and high frequency, and a diversity receiving module suitable for very high frequency.

[0003] However, the PA chip and diversity receiving module in the above-mentioned RF architecture will occupy a large space in the electronic device; thus, it can be seen that the existing RF circuit has the technical problem of occupying a large space. Summary of the invention

[0004] The embodiments of the present application provide a radio frequency circuit, an electronic device, and a signal processing method and device thereof, which can reduce the occupied space of the radio frequency circuit.

[0005] The technical solution of this application is implemented as follows:

[0006] The embodiment of the present application provides a radio frequency circuit, comprising: a transceiver, a transceiver module, a frequency conversion module, an antenna assembly and a processor, wherein the transceiver, the transceiver module, the frequency conversion module and the antenna assembly are connected in sequence, and the frequency conversion module is in communication connection with the processor; wherein,

[0007] The frequency conversion module is used to receive the first target frequency from the processor, and perform frequency conversion on the received signal from the antenna assembly to obtain a signal of the first target frequency;

[0008] The frequency conversion module is used to receive the second target frequency from the processor, and perform frequency conversion on the transmission signal from the transceiver module to obtain a signal of the second target frequency;

[0009] The first target frequency is a frequency suitable for the transceiver module; the second target frequency is a frequency required for communicating with the receiving end of the sending signal.

[0010] The present application provides an electronic device, including a radio frequency circuit as described in one or more of the above embodiments.

[0011] The embodiment of the present application provides a signal processing method, which is applied to the electronic device as described in the above embodiment, including:

[0012] When the antenna assembly receives the received signal, the frequency of the received signal is obtained, and the frequency of the received signal and a preset first target frequency are sent to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the received signal to obtain a signal of the first target frequency;

[0013] When the sending module sends the sending signal, the frequency of the sending signal is acquired, and the frequency of the sending signal and the preset second target frequency are sent to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the sending signal to obtain a signal of the second target frequency.

[0014] The embodiment of the present application provides a signal processing device, which is arranged in the electronic device as described in the above embodiment, including:

[0015] a first frequency conversion module, configured to obtain the frequency of the received signal when the antenna assembly receives the received signal, and send the frequency of the received signal and a preset first target frequency to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the received signal to obtain a signal of the first target frequency;

[0016] The second frequency conversion module is used to obtain the frequency of the transmission signal when the transmission module sends the transmission signal, and send the frequency of the transmission signal and a preset second target frequency to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the transmission signal to obtain a signal of the second target frequency.

[0017] An embodiment of the present application provides a signal processing device, including: a processor and a storage medium storing instructions executable by the processor, wherein the storage medium relies on the processor to perform operations via a communication bus, and when the instructions are executed by the processor, the signal processing method described in one or more of the above embodiments is executed.

[0018] An embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, wherein the computer program enables a computer to execute the steps of the signal processing method described in one or more of the above embodiments.

[0019] The embodiment of the present application provides a radio frequency circuit, an electronic device, and a signal processing method and device thereof, including: a transceiver, a transceiver module, a frequency conversion module, an antenna assembly, and a processor. The transceiver, the transceiver module, the frequency conversion module, and the antenna assembly are connected in sequence. The frequency conversion module has a communication connection with the processor. The frequency conversion module is used to receive a first target frequency from the processor, perform frequency conversion on a received signal from the antenna assembly, and obtain a signal of the first target frequency. The frequency conversion module is used to receive a second target frequency from the processor, perform frequency conversion on a transmitted signal from the transceiver module, and obtain a signal of the second target frequency. The first target frequency is a frequency suitable for the receiving module, and the second target frequency is a frequency required for communicating with a receiving end of the transmitted signal. frequency; that is, in an embodiment of the present application, a frequency conversion module is provided between the transceiver module and the antenna assembly of the RF circuit, and the frequency conversion module is communicatively connected to the processor, so that the frequency conversion module and the processor can be used to perform frequency conversion on the received signal or the transmitted signal in the RF circuit, so that the transceiver module can receive a signal of a first target frequency suitable for itself, and the antenna assembly can send a signal of a second target frequency required for communicating with the receiving end of the transmitted signal to the receiving end. Based on the frequency conversion module and the processor, the transceiver modules in the transceiver links of multiple frequency bands can be merged, and the signal transmission and reception of the transceiver links of multiple frequency bands can be realized by using fewer transceiver modules. In this way, the occupied space of the RF circuit is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of an optional radio frequency circuit provided in an embodiment of the present application;

[0021] Figure 2 It is a structural schematic diagram of an optional radio frequency circuit in the related art;

[0022] Figure 3 A schematic diagram of the structure of an example of an optional radio frequency circuit provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of an optional electronic device provided in an embodiment of the present application;

[0024] Figure 5 A flowchart of an optional signal processing method provided in an embodiment of the present application;

[0025] Figure 6 A schematic diagram of the structure of an optional signal processing device provided in an embodiment of the present application;

[0026] Figure 7 A schematic diagram of the structure of another optional signal processing device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0028] The present application embodiment provides a radio frequency circuit, Figure 1 A schematic diagram of an optional radio frequency circuit structure provided in an embodiment of the present application, such as Figure 1 As shown, the radio frequency circuit 100 includes a transceiver 11, a transceiver module 12, a frequency conversion module 13, an antenna assembly 14 and a processor 15. The transceiver 11, the transceiver module 12, the frequency conversion module 13 and the antenna assembly 14 are connected in sequence, and the frequency conversion module 13 is in communication connection with the processor 15; wherein,

[0029] The frequency conversion module 13 is used to receive the first target frequency from the processor 15, and perform frequency conversion on the received signal from the antenna assembly 14 to obtain a signal of the first target frequency;

[0030] The frequency conversion module 13 is used to receive the second target frequency from the processor, and perform frequency conversion on the transmission signal from the transceiver module 12 to obtain a signal of the second target frequency.

[0031] In modern computer systems, binary is used to store specific data and information. In mobile phone systems, in order to realize terminal data interaction (calls, data networks), specific data information S is usually generated by the baseband chip. BB (t):

[0032] S BB (t) = ∑ n＝1 a n p(t-nT)(1)

[0033] Among them, a n For specific binary data, p(t-nT) depends on the specific modulation method and can represent the duration of each signal.

[0034] By performing Fourier transform on the above expression, it can be found that the above baseband signal is concentrated at 0Hz in the frequency domain. In order to transmit the wireless signal to a farther place and prevent the communication signal from being interfered, the transmitted signal is usually transmitted with a carrier wave, and finally a signal similar to S(t) is formed for wireless transmission. S(t) is expressed as follows:

[0035]

[0036] Among them, f is the frequency of the carrier, that is, the frequency of specific signal transmission. is the phase of the carrier signal. To prevent interference between signals transmitted by various wireless systems, the 3rd Generation Partnership Project (3GPP) specifies some frequency ranges within which mobile terminals are allowed to communicate, namely frequency bands. Current mobile communication terminals need to use multiple power amplifiers and diversity receiving modules suitable for different frequency bands to process signals in different frequency bands. Figure 2 Take this as an example to illustrate.

[0037] Figure 2 is a schematic diagram of an optional radio frequency circuit structure in the related art, such as Figure 2 As shown, the RF circuit 200 includes a transceiver 21, a low band (LB) PA 22, a mid-high band (MHB) PA 23, an ultra-high band (UHB) PA 24, an MHB diversity front-end module (Di-FEM) 25, a UHB Di-FEM 26, an antenna assembly 27, an antenna assembly 28 and an antenna assembly 29; wherein the antenna assembly 27 is connected to one end of the LB PA 22, the other end of the LB PA 22 is connected to the transceiver 21, the antenna assembly 28 is respectively connected to one end of the MHB PA 23 and one end of the MHB Di-FEM 25, the other end of the MHB PA 23 and the other end of the MHB Di-FEM 25 are respectively connected to the transceiver 21, the antenna assembly 29 is respectively connected to one end of the UHB PA 24 and one end of the UHB Di-FEM 26, and the UHB The other end of the PA 24 and the other end of the UHBDi-FEM 26 are connected to the transceiver 21 respectively.

[0038] It can be seen that in the related art, one LB PA, one MHB PA, one UHB PA, one MHB Di-FEM, and one UHB Di-FEM are used, which need to occupy a large space inside the electronic device.

[0039] In order to reduce the space occupied by the radio frequency circuit, in an embodiment of the present application, in the radio frequency circuit 100, a frequency conversion module 13 is arranged between the transceiver module 12 and the antenna assembly 15, and the frequency conversion module 13 is also connected to the processor 15. It should be noted that the transceiver module 12 may be a PA, in which case the PA is both a module for receiving and a module for sending. The transceiver module 12 may also include a PA and a Di-FEM, wherein the PA is a module for sending and the Di-FEM is a module for receiving. The embodiment of the present application does not specifically limit this.

[0040] The processor 15 may be a processor in the electronic device where the radio frequency circuit 100 is located, or may be an independent processor, and this is not specifically limited in the embodiments of the present application.

[0041] The above-mentioned processor 15 is used to obtain the first target frequency and the second target frequency, wherein the first target frequency is a frequency applicable to the transceiver module 12; that is, the processor 15 pre-stores the frequency applicable to the transceiver module 12 of the RF circuit 100 to obtain the first target frequency and send the first target frequency to the frequency conversion module 13, so that the frequency conversion module 13 can convert the received signal into a signal of the first target frequency.

[0042] Among them, the second target frequency is the frequency required for the RF circuit 100 to communicate with the receiving end of the transmitted signal, that is, the processor 15 knows the frequency required for communicating with the receiving end of the transmitted signal, that is, the second target frequency, to obtain the second target frequency and send it to the frequency conversion module 13, so that the frequency conversion module 13 can convert the transmitted signal into a signal of the second target frequency.

[0043] The frequency conversion module 13 may include two steps of loading wave and filtering when performing frequency conversion, or may include three steps of phase shifting, loading wave and filtering. Here, the embodiment of the present application does not make any specific limitation on this.

[0044] Among them, the RF circuit 100 can be set in a cellular module, and / or, the RF circuit 100 can be set in a Wi-Fi module, that is, the above-mentioned RF circuit 100 is not only used in cellular communication, but also can be used in Wi-Fi communication. Here, the embodiment of the present application does not make specific limitations on this.

[0045] In this way, through the above-mentioned frequency conversion module 13 and processor 15, the received signal can be converted into a signal of a frequency suitable for the transceiver module 12, and the transmitted signal can be converted into a signal of a frequency required for communicating with the receiving end of the transmitted signal. In this way, only one transceiver module 12 is needed to complete the reception and transmission of signals in multiple frequency bands, thereby reducing the space occupied by the RF circuit 100.

[0046] In order to obtain a signal of the first target frequency by frequency conversion when receiving a received signal, in an optional embodiment, the frequency conversion module 13 includes: a first mixer and a first filter; wherein the first mixer and the first filter are respectively connected to the processor 15 for communication, the first mixer is connected between the antenna assembly and the first filter, and the first filter is connected between the first mixer and the receiving end of the transceiver module; wherein,

[0047] When the antenna assembly receives a received signal, the first mixer is used to receive the first target frequency and the frequency of the received signal from the processor 15, and based on the first target frequency and the frequency of the received signal, add the first carrier to the received signal to obtain a signal after adding the first carrier;

[0048] The first filter is used to receive the first target frequency from the processor 15, and filter the signal after adding the first carrier to obtain a signal of the first target frequency.

[0049] It can be understood that a filter and a mixer are sequentially arranged between the receiving end of the transceiver module 12 and the antenna assembly 14, namely the above-mentioned first filter and the first mixer, and the first mixer and the first filter are respectively connected to the processor 15 for communication. Then, after the antenna assembly 14 receives the received signal, the received signal is output to the first mixer, and the first mixer adds the first carrier to the received signal based on the first target frequency received from the processor 15 to obtain a signal after adding the first carrier, wherein the frequency of the first carrier is the difference between the first target frequency and the frequency of the received signal; specifically, the right side of formula (2) is multiplied by sin(2πf c t), and obtain the signal after adding the first carrier, where f c Indicates the frequency of the first carrier.

[0050] The signal after adding the first carrier is deduced through the characteristics of the trigonometric function to obtain a signal containing the first target frequency. Then, after the first mixer outputs the signal after adding the first carrier to the first filter, the first filter retains the signal of the first target frequency, thereby outputting the signal of the first target frequency to the transceiver module, so that the transceiver module can process the signal of the first target frequency.

[0051] Further, in order to improve the quality of the signal of the first target frequency, in an optional embodiment, the frequency conversion module 13 further includes: a first phase shifter; wherein the first phase shifter is communicatively connected to the processor 15, the first phase shifter is connected between the antenna assembly 14 and the first mixer, and the first mixer is connected between the first phase shifter and the first filter; wherein,

[0052] When the antenna assembly receives a received signal, the first phase shifter is used to receive the initial phase of the received signal from the processor 15, and based on the initial phase, phase shift the received signal to obtain a phase-shifted signal;

[0053] The first mixer is used to receive the first target frequency and the frequency of the received signal from the processor 15, and add a carrier to the phase-shifted signal based on the first target frequency and the frequency of the received signal to obtain a signal after adding the first carrier;

[0054] The first filter is used to receive the first target frequency from the processor 15, and filter the signal after adding the first carrier to obtain a signal of the first target frequency.

[0055] It can be understood that the frequency conversion module 13 includes a first phase shifter in addition to the first mixer, the first filter and the processor 15. The first phase shifter is arranged between the antenna component 14 and the first mixer and has a communication connection with the processor 15. Then, after the antenna component 14 receives the received signal, the received signal is output to the first phase shifter. The first phase shifter receives the initial phase of the received signal sent from the processor 15 and performs a phase shift on the received signal based on the initial phase. Here, the initial phase can be shifted to 0, or the initial phase can be reduced by phase shifting. Here, the embodiment of the present application does not specifically limit this. The quality of the signal of the first target frequency can be improved by phase shifting.

[0056] After the first phase shifter completes the phase shift, the phase-shifted signal is output to the first mixer. The first mixer adds the first carrier to the phase-shifted signal based on the first target frequency received from the processor 15 to obtain a signal after adding the first carrier, wherein the frequency of the first carrier is the difference between the first target frequency and the frequency of the received signal; specifically, the right side of formula (2) is multiplied by sin(2πf c t), and obtain the signal after adding the first carrier.

[0057] The signal after adding the first carrier is deduced through the characteristics of the trigonometric function to obtain a signal containing the first target frequency. Then, after the first mixer outputs the signal after adding the first carrier to the first filter, the first filter retains the signal of the first target frequency, thereby outputting the signal of the first target frequency to the transceiver module 12, so that the transceiver module 12 can process the signal of the first target frequency.

[0058] In order to obtain a signal of a second target frequency by frequency conversion when sending a transmission signal, in an optional embodiment, the frequency conversion module 13 includes: a second mixer and a second filter; wherein the second mixer and the second filter are respectively connected to the processor 15 for communication, the second mixer is connected between the transmitting end of the transceiver module 12 and the second filter, and the second filter is connected between the second mixer and the antenna assembly 14; wherein,

[0059] When the transceiver module 12 sends a transmission signal, the second mixer is used to receive the second target frequency and the frequency of the transmission signal from the processor 15, and based on the second target frequency and the frequency of the transmission signal, add a second carrier to the transmission signal to obtain a signal after adding the second carrier;

[0060] The second filter is used to receive the second target frequency from the processor 15, and filter the signal after adding the second carrier to obtain a signal of the second target frequency;

[0061] It can be understood that a mixer and a filter are sequentially arranged between the transmitting end of the transceiver module 12 and the antenna assembly 14, namely the above-mentioned second mixer and second filter, and the second mixer and the second filter are respectively communicated with the processor 15. Then, after the transceiver module 12 outputs the transmission signal to the second mixer, the second mixer adds a second carrier to the transmission signal based on the second target frequency received from the processor 15 to obtain a signal after adding the second carrier, wherein the frequency of the second carrier is the difference between the second target frequency and the frequency of the transmission signal; specifically, the right side of formula (2) is multiplied by sin(2πf1 t) to obtain a signal after adding the first carrier, wherein f1 represents the second target frequency.

[0062] The signal after adding the second carrier is deduced through the characteristics of the trigonometric function to obtain a signal containing the second target frequency. Then, after the second mixer outputs the signal after adding the second carrier to the second filter, the second filter retains the signal of the second target frequency, thereby outputting the signal of the second target frequency to the antenna component 14, so that the antenna component 14 can emit the signal of the second target frequency.

[0063] Further, in order to improve the quality of the signal of the second target frequency, in an optional embodiment, the frequency conversion module 13 further includes: a second phase shifter; wherein the second phase shifter is communicatively connected to the processor 15, the second phase shifter is connected between the transmitting end of the transceiver module 12 and the second mixer, and the second mixer is connected between the second phase shifter and the second filter; wherein,

[0064] The second phase shifter is used to receive the initial phase of the transmission signal from the processor 15, and based on the initial phase, perform phase shift on the transmission signal to obtain a phase-shifted signal;

[0065] The second mixer is used to receive the second target frequency and the frequency of the transmission signal from the processor 15, and based on the second target frequency and the frequency of the transmission signal, add a second carrier to the transmission signal to obtain a signal after the second carrier is added;

[0066] The second filter is used to receive the second target frequency from the processor 15, and filter the signal after adding the second carrier to obtain a signal of the second target frequency.

[0067] It can be understood that the frequency conversion module 13 includes a second phase shifter in addition to the second mixer, the second filter and the processor. The second phase shifter is arranged between the transceiver module 12 and the second mixer, and has a communication connection with the processor 15. Then, after the transceiver module 12 outputs the transmission signal to the second phase shifter, the second phase shifter receives the initial phase of the transmission signal sent from the processor 15, and performs phase shifting on the transmission signal based on the initial phase. Here, the initial phase can be shifted to 0, or the initial phase can be reduced by phase shifting. Here, the embodiment of the present application does not specifically limit this. The quality of the signal of the second target frequency can be improved by phase shifting.

[0068] After the second phase shifter completes the phase shift, the phase-shifted signal is output to the second mixer. The second mixer adds a second carrier to the phase-shifted signal based on the second target frequency received from the processor 15 to obtain a signal after adding the second carrier, wherein the frequency of the second carrier is the difference between the second target frequency and the frequency of the transmitted signal; specifically, the right side of formula (2) is multiplied by sin(2πf1t) to obtain a signal after adding the first carrier.

[0069] The signal after adding the second carrier is deduced through the characteristics of the trigonometric function to obtain a signal containing the second target frequency. Then, after the second mixer outputs the signal after adding the second carrier to the second filter, the second filter retains the signal of the second target frequency, thereby outputting the signal of the second target frequency to the antenna component 14, so that the antenna component 14 can emit the signal of the second target frequency.

[0070] Wherein, the first filter and the second filter may be bandpass filters.

[0071] The radio frequency circuit in one or more of the above embodiments is described below with examples.

[0072] This example proposes a signal processing method that can convert received signals of different frequency bands into signals of the same frequency band, thereby realizing a minimalist architecture design scheme in which the RF circuit only needs a power amplifier of one frequency band and a diversity reception module.

[0073] Figure 3 A schematic diagram of the structure of an example of an optional radio frequency circuit provided in an embodiment of the present application, such as Figure 3As shown, the terminal includes a radio frequency circuit 300, and the radio frequency circuit 300 includes: a transceiver 31, an MHB PA32, an MHB Di-FEM33, a phase shifter 341, a mixer 351, a bandpass filter 361, a phase shifter 342, a mixer 352, a bandpass filter 362, a processor 37, an antenna assembly 381, an antenna assembly 382 and an antenna assembly 383; wherein the antenna assembly 381 is an antenna for transmitting and receiving LB signals, the antenna assembly 382 is an antenna for transmitting and receiving MHB signals, and the antenna assembly 383 is an antenna for transmitting and receiving UHB signals; wherein,

[0074] The transceiver 31 is respectively connected to one end of the MHB PA32 and one end of the MHB Di-FEM33, the transmitting end of the MHB of the MHB PA32 is connected to the antenna assembly 382, ​​the transmitting end of the MHB of the MHB Di-FEM33 is connected to the antenna assembly 382, ​​the transmitting end of the LB of the MHB PA, the phase shifter 341, the mixer 351, the bandpass filter 361 and the antenna assembly 381 are connected in sequence, and the antenna assembly 383, the phase shifter 342, the mixer 352, the bandpass filter 362 and the receiving end of the UHB of the MHB Di-FEM are connected in sequence.

[0075] For the UHB signal receiving link based on the antenna assembly 383, phase shifter 342, mixer 352, bandpass filter 362 and MHB Di-FEM 33, it is assumed that the received signal is S RX (t), expressed as follows:

[0076]

[0077] Among them, S BB (t) is the data information carried by the signal, and N(t) is the noise interference of all frequencies outside the target signal. For the above signal, when the terminal establishes a connection with the base station, the base station information is received to clarify the specific frequency band of the signal. For the signal, first, it is passed through the phase shifter 342 to modulate the phase is 0, assuming that the received signal frequency is f RX , and the terminal only has t The MHB Di-FEM33 allows the received signal to pass through the mixer 352. The specific process is similar to adding a carrier to the received signal. The frequency of the carrier is f c =f t -f RX ; The signal after adding a carrier is as follows:

[0078] S RX (t) = S BB (t)×sin(2πf RX t)×sin(2πfc t)+N(t)×sin(2πf c t) (4)

[0079] From the characteristics of trigonometric functions, we can know that:

[0080] cos(a+b)=cosa×cosb-sina×sinb (5)

[0081] cos(ab)=cosa×cosb+sina×sinb (6)

[0082]

[0083] Therefore, the following formula can be derived:

[0084]

[0085] That is, based on the above formula (8), the above formula (4) can be transformed as follows:

[0086]

[0087] The signal obtained by the above formula (9) is passed through a bandpass filter 362, and the frequency f is retained. t =f RX +f c The frequency of the signal is: The final generated signal is as follows:

[0088]

[0089] N ft (t) is f t The noise interference signal at the frequency is realized, that is, the conversion of the carrier frequency is realized.

[0090] In addition, the transmitting system is similar to the receiving system, except that the frequency of the load wave is the frequency of the transmitted signal and f t The difference.

[0091] It should be noted that the higher the carrier frequency, the higher the cost of the corresponding RF chip. However, due to the requirements of local operators, mobile terminals need to adapt to very high frequency or millimeter waves. In this regard, the use of one PA and Di-FEM in the above example can be expanded to: using multiple PAs and Di-FEMs. To meet the operator's frequency band requirements, the same mode is used to convert the carrier frequency, so that the mobile terminal can adapt to the local special frequency band, thereby saving costs. Alternatively, the above-mentioned carrier frequency conversion mode is applied to only reduce some PA or Di-FEM modules.

[0092] In addition, the above example is not limited to cellular modules, but also applies to WIFI modules. In the above example, the filter only retains the signal of the target frequency, causing the signal strength to be attenuated to half, and the other half frequency is f RX -f c The signal is filtered out, and here it can be optimized to filter out the other half of the frequency f RX -f c The signal Repeat the above frequency conversion process several times, and set the frequency generated each time to f RX +f c The signal components are summed The original signal strength can be roughly restored.

[0093] In the above example, a mixer plus filter structure is used to convert all received or transmitted frequency bands into frequency bands with similar frequencies, saving the use of PA and Di-FEM chips, achieving the purpose of reducing costs and saving space.

[0094] In other words, this example can reduce costs. Using a carrier frequency conversion module, only one set of power amplifiers and diversity receiving modules is needed to achieve transmission and reception of all frequency bands. The use of PA and Di-FEM is reduced, saving a lot of space on the mainboard of the mobile terminal.

[0095] The embodiment of the present application provides a radio frequency circuit, including: a transceiver, a transceiver module, a frequency conversion module, an antenna assembly and a processor. The transceiver, the transceiver module, the frequency conversion module and the antenna assembly are connected in sequence. The frequency conversion module has a communication connection with the processor. The frequency conversion module is used to receive a first target frequency from the processor, perform frequency conversion on a received signal from the antenna assembly, and obtain a signal of the first target frequency. The frequency conversion module is used to receive a second target frequency from the processor, perform frequency conversion on a transmitted signal from the transceiver module, and obtain a signal of the second target frequency. The first target frequency is a frequency suitable for the receiving module, and the second target frequency is a frequency required for communicating with a receiving end of the transmitted signal. That is to say, In an embodiment of the present application, a frequency conversion module is provided between the transceiver module and the antenna assembly of the RF circuit, and the frequency conversion module is communicatively connected to the processor, so that the frequency conversion module and the processor can be used to perform frequency conversion on the received signal or the transmitted signal in the RF circuit, so that the transceiver module can receive a signal of a first target frequency suitable for itself, and the antenna assembly can send a signal of a second target frequency required for communicating with the receiving end of the transmitted signal to the receiving end. Based on the frequency conversion module and the processor, the transceiver modules in the transceiver links of multiple frequency bands can be merged, and the signal transmission and reception of the transceiver links of multiple frequency bands can be realized by using fewer transceiver modules, thereby reducing the occupied space of the RF circuit.

[0096] Based on the same inventive concept as the above-mentioned embodiments, an embodiment of the present application provides an electronic device, Figure 4 A schematic diagram of the structure of an optional electronic device provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the electronic device 400 may include the radio frequency circuit 100 described in one or more of the above embodiments.

[0097] The present application provides a signal processing method. Figure 5 A flow chart of an optional signal processing method provided in an embodiment of the present application, the method is applied to the electronic device described in one or more of the above embodiments, such as Figure 5 As shown, the signal processing method may include:

[0098] S501: When the antenna component receives a received signal, the frequency of the received signal is obtained, and the frequency of the received signal and a preset first target frequency are sent to a frequency conversion module, so that the frequency conversion module performs frequency conversion on the received signal to obtain a signal of the first target frequency;

[0099] S502: When the sending module sends a sending signal, the frequency of the sending signal is obtained, and the frequency of the sending signal and a preset second target frequency are sent to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the sending signal to obtain a signal of the second target frequency.

[0100] An embodiment of the present application provides a signal processing device, which is disposed in the electronic device described in one or more of the above embodiments. Figure 6 A schematic diagram of the structure of an optional signal processing device provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, the device comprises:

[0101] The first frequency conversion module 61 is used to obtain the frequency of the received signal when the antenna assembly receives the received signal, and send the frequency of the received signal and a preset first target frequency to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the received signal to obtain a signal of the first target frequency;

[0102] The second frequency conversion module 62 is used to obtain the frequency of the transmission signal when the transmission module sends the transmission signal, and send the frequency of the transmission signal and the preset second target frequency to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the transmission signal to obtain a signal of the second target frequency.

[0103] In practical applications, the first frequency conversion module 61 and the second frequency conversion module 62 can be implemented by a processor located on a signal processing device, specifically a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP) or a field programmable gate array (FPGA).

[0104] The present application provides a signal processing device. Figure 7 A schematic diagram of the structure of another optional signal processing device provided in an embodiment of the present application, such as Figure 7 As shown, the embodiment of the present application provides a signal processing device 700, including:

[0105] A processor 71 and a storage medium 72 storing executable instructions of the processor 71, wherein the storage medium 72 relies on the processor 71 to perform operations through a communication bus 73, and when the instructions are executed by the processor 71, the signal processing method performed in one or more of the above embodiments is executed.

[0106] It should be noted that in actual application, the various components in the terminal are coupled together through the communication bus 73. It is understandable that the communication bus 73 is used to realize the connection and communication between these components. In addition to the data bus, the communication bus 73 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, Figure 7 Various buses are labeled as communication buses 73.

[0107] An embodiment of the present application provides a computer storage medium, wherein the computer-readable storage medium is used to store a computer program, wherein the computer program enables a computer to execute the steps of the signal processing method described in one or more of the above embodiments.

[0108] Among them, the computer-readable storage medium can be a ferromagnetic random access memory (FRAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM) and other memories.

[0109] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of hardware embodiments, software embodiments, or embodiments in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0110] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0111] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0112] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0113] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A radio frequency circuit, characterized in that: include: A transceiver, a transceiver module, a frequency conversion module, an antenna assembly and a processor, wherein the transceiver, the transceiver module, the frequency conversion module and the antenna assembly are connected in sequence, and the frequency conversion module is in communication connection with the processor; wherein, The frequency conversion module is used to receive the first target frequency from the processor, and perform frequency conversion on the received signal from the antenna assembly to obtain a signal of the first target frequency; The frequency conversion module is used to receive the second target frequency from the processor, and perform frequency conversion on the transmission signal from the transceiver module to obtain a signal of the second target frequency; The first target frequency is a frequency suitable for the transceiver module; the second target frequency is a frequency required for communicating with the receiving end of the sending signal.

2. The radio frequency circuit according to claim 1, characterized in that: The frequency conversion module includes: a first mixer and a first filter; wherein the first mixer and the first filter are respectively connected to the processor in communication, the first mixer is connected between the antenna assembly and the first filter, and the first filter is connected between the first mixer and the receiving end of the transceiver module; wherein, When the antenna assembly receives the received signal, the first mixer is used to receive the first target frequency from the processor and the frequency of the received signal, and based on the first target frequency and the frequency of the received signal, add a first carrier to the received signal to obtain a signal after adding the first carrier; The first filter is used to receive the first target frequency from the processor, and filter the signal after adding the first carrier to obtain a signal of the first target frequency; The frequency of the first carrier is the difference between the first target frequency and the frequency of the received signal.

3. The radio frequency circuit according to claim 2, characterized in that: The frequency conversion module further includes: a first phase shifter; wherein the first phase shifter is in communication connection with the processor, the first phase shifter is connected between the antenna assembly and the first mixer, and the first mixer is connected between the first phase shifter and the first filter; wherein, When the antenna assembly receives the received signal, the first phase shifter is used to receive the initial phase of the received signal from the processor, and based on the initial phase, perform phase shifting on the received signal to obtain a phase-shifted signal; The first mixer is used to receive the first target frequency and the frequency of the received signal from the processor, and based on the first target frequency and the frequency of the received signal, add a first carrier to the phase-shifted signal to obtain a signal after adding the first carrier; The first filter is used to receive the first target frequency from the processor, and filter the signal after adding the first carrier to obtain a signal of the first target frequency.

4. The radio frequency circuit according to claim 1, characterized in that: The frequency conversion module includes: a second mixer and a second filter; wherein the second mixer and the second filter are respectively connected to the processor in communication, the second mixer is connected between the transmitting end of the transceiver module and the second filter, and the second filter is connected between the second mixer and the antenna assembly; wherein, When the transceiver module sends the transmission signal, the second mixer is used to receive the second target frequency from the processor and the frequency of the transmission signal, and add a second carrier to the transmission signal based on the second target frequency and the frequency of the transmission signal to obtain a signal after the second carrier is added; The second filter is used to receive the second target frequency from the processor, and filter the signal after adding the second carrier to obtain a signal of the second target frequency; The frequency of the second carrier is the difference between the second target frequency and the frequency of the transmitted signal.

5. The radio frequency circuit according to claim 4, characterized in that: The frequency conversion module further includes: a second phase shifter; wherein the second phase shifter is in communication connection with the processor, the second phase shifter is connected between the transmitting end of the transceiver module and the second mixer, and the second mixer is connected between the second phase shifter and the second filter; wherein, The second phase shifter is used to receive the initial phase of the transmission signal from the processor, and based on the initial phase, perform phase shifting on the transmission signal to obtain a phase-shifted signal; The second mixer is used for receiving the second target frequency and the frequency of the transmission signal from the processor, and adding a second carrier to the transmission signal based on the second target frequency and the frequency of the transmission signal to obtain a signal after the second carrier is added; The second filter is used to receive the second target frequency from the processor, and filter the signal after adding the second carrier to obtain a signal of the second target frequency.

6. The radio frequency circuit according to any one of claims 1 to 5, characterized in that: The radio frequency circuit is arranged in a cellular module, and / or the radio frequency circuit is arranged in a Wi-Fi module.

7. An electronic device, characterized in that: Comprising the radio frequency circuit according to any one of claims 1 to 6.

8. A signal processing method, characterized in that: The method is applied to the electronic device according to claim 7, comprising: When the antenna assembly receives the received signal, the frequency of the received signal is obtained, and the frequency of the received signal and a preset first target frequency are sent to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the received signal to obtain a signal of the first target frequency; When the sending module sends the sending signal, the frequency of the sending signal is acquired, and the frequency of the sending signal and the preset second target frequency are sent to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the sending signal to obtain a signal of the second target frequency.

9. A signal processing device, characterized in that: The device is provided in the electronic device according to claim 7, comprising: a first frequency conversion module, configured to obtain the frequency of the received signal when the antenna assembly receives the received signal, and send the frequency of the received signal and a preset first target frequency to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the received signal to obtain a signal of the first target frequency; The second frequency conversion module is used to obtain the frequency of the transmission signal when the transmission module sends the transmission signal, and send the frequency of the transmission signal and a preset second target frequency to the frequency conversion module, so that the frequency conversion module performs frequency conversion on the transmission signal to obtain a signal of the second target frequency.

10. A signal processing device, characterized in that: include: A processor and a storage medium storing instructions executable by the processor, wherein the storage medium relies on the processor to perform operations via a communication bus, and when the instructions are executed by the processor, the signal processing method described in claim 8 is executed.

11. A computer-readable storage medium, the computer-readable storage medium being used to store a computer program, the computer program causing a computer to execute the steps of the signal processing method according to claim 8.

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