Radio frequency circuit and electronic equipment

Abstract

The utility model discloses a radio frequency circuit and electronic equipment, and belongs to the technical field of communication. The radio frequency circuit comprises a control module, a signal processing module, an antenna switch, a tuning filtering module and an antenna, the first end of the control module is electrically connected with the first end of the signal processing module, the second end of the control module is electrically connected with the controlled end of the tuning filtering module, the second end of the signal processing module is electrically connected with the first end of the antenna switch, the second end of the antenna switch is electrically connected with the first end of the tuning filtering module, and the second end of the tuning filtering module is electrically connected with the antenna. And the tuning filtering module is used for improving the radio frequency index of the signal processing module under carrier aggregation or dual-connection combination. According to the invention, the tuning filtering module is additionally arranged between the antenna switch and the antenna, and the control module is combined to control the tuning filtering module, so that the radio frequency index of the signal processing module under carrier aggregation or dual-connection combination can be effectively improved, the miniaturization design of the signal processing module is not affected, and the cost and the debugging difficulty can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a radio frequency circuit and an electronic device. BACKGROUND

[0002] At present, in order to improve the radio frequency index of the communication module under the CA (carrier aggregation) or ENDC (E-UTRAN New Radio-Dual Connectivity, a dual connectivity technology that allows mobile devices to connect to 4G and 5G at the same time) combination, the common improvement method in the related art is to configure an independent trap network or filter for the duplexer to increase the isolation of the TRX. However, this improvement method is not conducive to miniaturization design, and will result in high cost and debugging difficulty. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a radio frequency circuit and an electronic device, which aims to solve the technical problem of how to effectively improve the radio frequency index under the CA or ENDC combination without affecting miniaturization design and reducing cost and debugging difficulty.

[0004] To achieve the above-mentioned purpose, the present application provides a radio frequency circuit, which comprises a control module, a signal processing module, an antenna switch, a tuning filter module and an antenna.

[0005] The first end of the control module is electrically connected to the first end of the signal processing module, the second end of the control module is electrically connected to the controlled end of the tuning filter module, the second end of the signal processing module is electrically connected to the first end of the antenna switch, the second end of the antenna switch is electrically connected to the first end of the tuning filter module, and the second end of the tuning filter module is electrically connected to the antenna. The tuning filter module is used to improve the radio frequency index of the signal processing module under the carrier aggregation or dual connectivity combination.

[0006] In an embodiment, the tuning filter module comprises:

[0007] A matching filter unit, the first end of the matching filter unit is electrically connected to the second end of the antenna switch, and the second end of the matching filter unit is electrically connected to the antenna.

[0008] At least one tuning unit, the first end of the at least one tuning unit is electrically connected to the matching filter unit.

[0009] a controlled adjustment unit, a first end of the controlled adjustment unit electrically connected to a second end of the control module, a second end of the controlled adjustment unit electrically connected to a second end of the at least one tuning unit, the controlled adjustment unit configured to adjust an operating parameter of the at least one tuning unit to improve a radio frequency metric of the signal processing module under a carrier aggregation or dual connectivity combination.

[0010] In an embodiment, the at least one tuning unit comprises a first tuning unit and a second tuning unit, and the matched filter unit comprises:

[0011] a first capacitor, a first end of the first capacitor electrically connected to the antenna switch, a second end of the first capacitor electrically connected to a first end of the first tuning unit;

[0012] a second capacitor, a first end of the second capacitor electrically connected to the first end of the first tuning unit, a second end of the second capacitor electrically connected to a first end of the second tuning unit;

[0013] a third capacitor, a first end of the third capacitor electrically connected to the first end of the second tuning unit, a second end of the third capacitor electrically connected to the antenna;

[0014] a fourth capacitor, a first end of the fourth capacitor electrically connected to the second end of the first capacitor, a second end of the fourth capacitor electrically connected to ground;

[0015] a fifth capacitor, a first end of the fifth capacitor electrically connected to the second end of the second capacitor, a second end of the fifth capacitor electrically connected to ground.

[0016] In an embodiment, the first tuning unit comprises:

[0017] a first inductor, a first end of the first inductor electrically connected to the second end of the first capacitor;

[0018] a sixth capacitor, a first end of the sixth capacitor electrically connected to a second end of the first inductor;

[0019] a first varactor diode, a cathode of the first varactor diode electrically connected to a second end of the sixth capacitor, an anode of the first varactor diode electrically connected to ground;

[0020] a first resistor, a first end of the first resistor electrically connected to the cathode of the first varactor diode, a second end of the first resistor electrically connected to the second end of the controlled adjustment unit;

[0021] a seventh capacitor, a first end of the seventh capacitor electrically connected to the second end of the first resistor, a second end of the seventh capacitor electrically connected to ground.

[0022] In an embodiment, the second tuning unit comprises:

[0023] a second inductor, a first end of the second inductor being electrically connected to a second end of the second capacitor;

[0024] an eighth capacitor, a first end of the eighth capacitor being electrically connected to a second end of the second inductor;

[0025] a second varactor diode, a cathode of the second varactor diode being electrically connected to a second end of the eighth capacitor, and an anode of the second varactor diode being grounded;

[0026] a second resistor, a first end of the second resistor being electrically connected to a cathode of the second varactor diode, and a second end of the second resistor being electrically connected to a second end of the controlled adjustment unit;

[0027] a ninth capacitor, a first end of the ninth capacitor being electrically connected to a second end of the second resistor, and a second end of the ninth capacitor being grounded.

[0028] In an embodiment, the controlled adjustment unit comprises a digital-to-analog converter, and the digital-to-analog converter is configured to adjust a capacitance of the first varactor diode and / or the second varactor diode, so as to improve a radio frequency index of the signal processing module under a carrier aggregation or a dual connectivity combination.

[0029] In an embodiment, the control module comprises a central processing unit.

[0030] In an embodiment, the signal processing module comprises:

[0031] a radio transceiver, a first end of the radio transceiver being electrically connected to a first end of the control module;

[0032] a power amplifier, a first end of the power amplifier being electrically connected to a second end of the radio transceiver;

[0033] a signal transceiving unit, a first end of the signal transceiving unit being electrically connected to a second end of the power amplifier, and a second end of the signal transceiving unit being electrically connected to a first end of the antenna switch.

[0034] In an embodiment, the signal transceiving unit comprises at least one duplexer, and the at least one duplexer is configured to transmit and receive signals of at least one frequency band.

[0035] In addition, to achieve the above-mentioned purpose, the present application also provides an electronic device, which comprises the radio frequency circuit as described above.

[0036] The application provides a radio frequency circuit and electronic equipment, the radio frequency circuit comprises a control module, a signal processing module, an antenna switch, a tuning filter module and an antenna; the first end of the control module is electrically connected with the first end of the signal processing module, the second end of the control module is electrically connected with the controlled end of the tuning filter module, the second end of the signal processing module is electrically connected with the first end of the antenna switch, the second end of the antenna switch is electrically connected with the first end of the tuning filter module, and the second end of the tuning filter module is electrically connected with the antenna; the tuning filter module is used for improving the radio frequency index of the signal processing module under carrier aggregation or double connection combination. The tuning filter module is additionally arranged between the antenna switch and the antenna, and the control module is used for controlling the tuning filter module, so that the radio frequency index of the signal processing module under carrier aggregation or double connection combination can be effectively improved, the miniaturized design of the signal processing module is not affected, and the cost and the debugging difficulty are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the drawings shown.

[0038] Figure 1 A structural schematic diagram of a radio frequency circuit provided by the embodiment of the present application is shown in the figure.

[0039] Figure 2 A structural schematic diagram of a radio frequency circuit provided by the embodiment of the present application after the signal processing module is refined is shown in the figure.

[0040] Figure 3 A structural schematic diagram of a radio frequency circuit provided by the embodiment of the present application after the tuning filter module is refined is shown in the figure.

[0041] Figure 4 A structural schematic diagram of a matching filter unit in the tuning filter module related to the radio frequency circuit provided by the embodiment of the present application is shown in the figure.

[0042] Figure 5 A structural schematic diagram of a first tuning unit in the tuning filter module related to the radio frequency circuit provided by the embodiment of the present application is shown in the figure.

[0043] Figure 6 A structural schematic diagram of a second tuning unit in the tuning filter module related to the radio frequency circuit provided by the embodiment of the present application is shown in the figure.

[0044] Explanation of reference numerals:

[0045] 10, control module; 20, signal processing module; 30, antenna switch; 40, tuning filter module; 50, antenna; 21, radio transceiver; 22, power amplifier; 23, signal transceiver unit; 41, matched filter unit; 42, at least one tuning unit; 43, controlled adjustment unit; 421, first tuning unit; 422, second tuning unit; C1, first capacitor; C2, second capacitor; C3, third capacitor;

[0046] C4, fourth capacitor; C5, fifth capacitor; L1, first inductor; C6, sixth capacitor; VD1, first varactor diode; R1, first resistor; C7, seventh capacitor; L2, second inductor; C8, eighth capacitor; VD2, second varactor diode; R2, second resistor; C9, ninth capacitor.

[0047] The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0049] At present, in order to improve the radio frequency index of the communication module under the combination of CA (carrier aggregation) or ENDC (E-UTRAN New Radio-Dual Connectivity, a dual connectivity technology that allows mobile devices to connect to 4G and 5G at the same time), the common improvement method in the related art is to configure an independent trap network or filter for the duplexer to increase the isolation of the TRX. However, this improvement method is not conducive to miniaturization design, and will lead to high cost and high debugging difficulty.

[0050] Taking common CA_8A-41A and CA_12A-66A as examples, the schemes for increasing the isolation of the TRX include: 1) increasing a Notch wave trap network at the TX end to improve the suppression system of the main frequency multiplication point, thereby reducing the interference of the SCC (Secondary Component Carrier, secondary carrier in carrier aggregation); 2) increasing a filter at the TX front end to improve the suppression system of the main frequency multiplication point, which is basically the same as 1); 3) increasing the input and output lines of the TRX to increase the isolation; 4) increasing the isolation by shielding the frame. The above schemes have the following defects: Defect one: if the Notch wave trap network is increased, then the TX end with harmonic relationship combination under all relevant CA or ENDC combinations needs an independent wave trap network, which is not conducive to miniaturized design; Defect two: if the filter is increased, the cost will be increased; Defect three: the TX end with harmonic relationship combination under all relevant CA or ENDC combinations needs to be artificially adjusted to meet the requirements, which may easily lead to a non-optimal matching state and greatly increase the labor cost.

[0051] Therefore, the embodiment of the present application provides a radio frequency circuit and electronic equipment, which overcomes the problems in the related art of configuring an independent wave trap network or filter for a duplexer to increase the isolation of the TRX. The radio frequency circuit comprises a control module, a signal processing module, an antenna switch, a tuning filter module and an antenna. The first end of the control module is electrically connected to the first end of the signal processing module. The second end of the control module is electrically connected to the controlled end of the tuning filter module. The second end of the signal processing module is electrically connected to the first end of the antenna switch. The second end of the antenna switch is electrically connected to the first end of the tuning filter module. The second end of the tuning filter module is electrically connected to the antenna. The tuning filter module is used to improve the radio frequency index of the signal processing module under carrier aggregation or dual connection combination. The radio frequency circuit provided by the embodiment of the present application can effectively improve the radio frequency index of the signal processing module under carrier aggregation or dual connection combination by adding the tuning filter module between the antenna switch and the antenna and controlling the tuning filter module by the control module, without affecting the miniaturized design of the signal processing module, and can also reduce the cost and the debugging difficulty.

[0052] The radio frequency circuit and electronic equipment provided by the embodiment of the present application are specifically described by the following embodiments. First, the radio frequency circuit is described.

[0053] The radio frequency circuit provided by the embodiment of the present application is described with reference to Figure 1 , Figure 1 The radio frequency circuit provided by the embodiment of the present application is described with reference to

[0054] The first end of the control module 10 is electrically connected to the first end of the signal processing module 20, the second end of the control module 10 is electrically connected to the controlled end of the tuning filter module 40, the second end of the signal processing module 20 is electrically connected to the first end of the antenna switch 30, the second end of the antenna switch 30 is electrically connected to the first end of the tuning filter module 40, and the second end of the tuning filter module 40 is electrically connected to the antenna 50. The tuning filter module 40 is used to improve the radio frequency index of the signal processing module 20 under the combination of carrier aggregation or dual connectivity.

[0055] It should be noted that, in the embodiment, in order not to affect the miniaturization design, the increase or decrease of components on the TX end or RX end is no longer considered, but the tuning filter module 40 is additionally arranged between the common end and the antenna 50, so that the architecture of the signal processing module 20 itself does not need to be changed, and the miniaturization design is not affected. After the signal transceiving instruction of the control module 10 is determined and the signal frequency band selection of the signal processing module 20 is completed, the tuning filter module 40 can be used as a front-end tuning trap network to trap the frequency multiplication point of the main frequency, and by changing the operating parameters of the tuning filter module 40 through the debugging signal from the control module 10, the improvement of the radio frequency index (Desence) of the signal processing module 20 under the combination of carrier aggregation (CA) or dual connectivity (ENDC) can be realized.

[0056] As an example, in the embodiment, the control module 10 can be implemented by using a central processing unit (CPU), or can be implemented by using other reasonable control devices, and the embodiment does not limit this.

[0057] Reference Figure 2 In some possible embodiments, the signal processing module 20 can specifically include:

[0058] The first end of the radio transceiver 21 is electrically connected to the first end of the control module 10.

[0059] The first end of the power amplifier 22 is electrically connected to the second end of the radio transceiver 21.

[0060] The first end of the signal transceiving unit 23 is electrically connected to the second end of the power amplifier 22, and the second end of the signal transceiving unit 23 is electrically connected to the first end of the antenna switch 30.

[0061] In the embodiment, the signal processing module 20 can be composed of the radio transceiver 21, the power amplifier 22 and the signal transceiving unit 23. The first end of the radio transceiver 21 is equivalent to the first end of the signal processing module 20, and the second end of the signal transceiving unit 23 is equivalent to the second end of the signal processing module 20.

[0062] In some possible embodiments, the signal transceiver unit 23 comprises at least one duplexer for transmitting and receiving signals of at least one frequency band. For example, in the case of common CA_8A-41A and CA_12A-66A, the signal transceiver unit 23 comprises at least B8 duplexer and B12 duplexer.

[0063] As an example, in the present embodiment, the signal from the WTR (Wafer Transceiver) passes through the PA (Power Amplifier) for amplification, and then is sent to the duplexer for frequency band selection, and then is sent to the tuning filter module 40 as the front-end tuning trap network to trap the frequency multiplication point of the main frequency, thereby improving the radio frequency index of the duplexer of different frequency bands under CA or ENDC combination.

[0064] Referring to Figure 3 In some possible embodiments, the tuning filter module 40 can specifically comprise:

[0065] The matching filter unit 41, the first end of the matching filter unit 41 is electrically connected to the second end of the antenna switch 30, and the second end of the matching filter unit 41 is electrically connected to the antenna 50.

[0066] The at least one tuning unit 42, the first end of the at least one tuning unit 42 is electrically connected to the matching filter unit 41.

[0067] The controlled adjustment unit 43, the first end of the controlled adjustment unit 43 is electrically connected to the second end of the control module 10, and the second end of the controlled adjustment unit 43 is electrically connected to the second end of the at least one tuning unit 42, and the controlled adjustment unit 43 is used to adjust the operating parameter of the at least one tuning unit 42, so as to improve the radio frequency index of the signal processing module 20 under carrier aggregation or dual connection combination.

[0068] In the present embodiment, the first end of the matching filter unit 41 corresponds to the first end of the tuning filter module 40, the second end of the matching filter unit 41 corresponds to the second end of the tuning filter module 40, and the first end of the controlled adjustment unit 43 corresponds to the controlled end of the tuning filter module 40.

[0069] In the present embodiment, the tuning filter module 40 mainly receives the debugging signal from the control module 10 through the controlled adjustment unit 43, and then adjusts the operating parameter of the at least one tuning unit 42, so as to trap the frequency multiplication point of the main frequency, improve the suppression of the frequency multiplication point of the main frequency, and reduce signal interference; wherein the number of stages of the tuning unit can be selected according to actual needs, for example, one stage, two stages, three stages, four stages, etc., and the present embodiment does not limit this.

[0070] As an example, in the embodiment, the two-stage tuning unit is selected so that the tuning filter module 40 forms a tuning band-pass filter circuit, which can optimize the effect of improving the radio frequency index.

[0071] With reference to Figure 4 In some possible embodiments, the at least one-stage tuning unit 42 includes a first tuning unit 421 and a second tuning unit 422, and the matching filter unit 41 can specifically include:

[0072] a first capacitor C1, a first end of the first capacitor C1 being electrically connected to the antenna switch 30, and a second end of the first capacitor C1 being electrically connected to a first end of the first tuning unit 421;

[0073] a second capacitor C2, a first end of the second capacitor C2 being electrically connected to the first end of the first tuning unit 421, and a second end of the second capacitor C2 being electrically connected to a first end of the second tuning unit 422;

[0074] a third capacitor C3, a first end of the third capacitor C3 being electrically connected to the first end of the second tuning unit 422, and a second end of the third capacitor C3 being electrically connected to the antenna 50;

[0075] a fourth capacitor C4, a first end of the fourth capacitor C4 being electrically connected to the second end of the first capacitor C1, and a second end of the fourth capacitor C4 being grounded;

[0076] a fifth capacitor C5, a first end of the fifth capacitor C5 being electrically connected to the second end of the second capacitor C2, and a second end of the fifth capacitor C5 being grounded.

[0077] In the embodiment, the first end of the first capacitor C1 corresponds to the first end of the matching filter unit 41, the second end of the third capacitor C3 corresponds to the second end of the matching filter unit 41, the first end of the first tuning unit 421 is connected after the first end of the first capacitor C1 and the first end of the second capacitor C2 are connected together, and the first end of the second tuning unit 422 is connected after the second end of the second capacitor C2 and the first end of the third capacitor C3 are connected together.

[0078] In the embodiment, the number of capacitors in the matching filter unit 41 can be flexibly adjusted according to the number of stages of the tuning unit. For example, in the case of a two-stage tuning unit, the matching filter unit 41 includes the first capacitor C1, the second capacitor C2, and the third capacitor C3 which are connected in series between the antenna switch 30 and the antenna 50 and play a matching role, the fourth capacitor C4 which is arranged between the first capacitor C1 and the second capacitor C2 and has one end grounded, and the fifth capacitor C5 which is arranged between the second capacitor C2 and the third capacitor C3 and has one end grounded.

[0079] With reference to Figure 5 In some possible embodiments, the first tuning unit 421 can specifically include:

[0080] a first inductor L1, a first end of the first inductor L1 being electrically connected to a second end of the first capacitor C1;

[0081] a sixth capacitor C6, a first end of the sixth capacitor C6 being electrically connected to a second end of the first inductor L1;

[0082] a first varactor diode VD1, a cathode of the first varactor diode VD1 being electrically connected to a second end of the sixth capacitor C6, and an anode of the first varactor diode VD1 being grounded;

[0083] a first resistor R1, a first end of the first resistor R1 being electrically connected to the cathode of the first varactor diode VD1, and a second end of the first resistor R1 being electrically connected to the second end of the controlled adjustment unit 43;

[0084] a seventh capacitor C7, a first end of the seventh capacitor C7 being electrically connected to the second end of the first resistor R1, and a second end of the seventh capacitor C7 being grounded.

[0085] In the embodiment, the first end of the first inductor L1 corresponds to the first end of the first tuning unit 421, and the second end of the first resistor R1 and the first end of the seventh capacitor C7 together correspond to the second end of the first tuning unit 421.

[0086] Reference Figure 6 In some possible embodiments, the second tuning unit 422 can specifically include:

[0087] a second inductor L2, a first end of the second inductor L2 being electrically connected to a second end of a second capacitor C2;

[0088] an eighth capacitor C8, a first end of the eighth capacitor C8 being electrically connected to a second end of the second inductor L2;

[0089] a second varactor diode VD2, a cathode of the second varactor diode VD2 being electrically connected to a second end of the eighth capacitor C8, and an anode of the second varactor diode VD2 being grounded;

[0090] a second resistor R2, a first end of the second resistor R2 being electrically connected to the cathode of the second varactor diode VD2, and a second end of the second resistor R2 being electrically connected to the second end of the controlled adjustment unit 43;

[0091] a ninth capacitor C9, a first end of the ninth capacitor C9 being electrically connected to the second end of the second resistor R2, and a second end of the ninth capacitor C9 being grounded.

[0092] In the embodiment, the first end of the second inductor L2 corresponds to the first end of the second tuning unit 422, and the second end of the second resistor R2 and the first end of the ninth capacitor C9 together correspond to the second end of the second tuning unit 422.

[0093] In some possible embodiments, the controlled adjustment unit 43 comprises a digital-to-analog converter for adjusting the capacitance of the first varactor VD1 and / or the second varactor VD2 to improve the radio frequency index of the signal processing module 20 under carrier aggregation or dual connectivity combination.

[0094] In this embodiment, the first tuning unit 421 and the second tuning unit 422 are respectively composed of inductance, capacitance, varactor and resistance, and the controlled adjustment unit 43 can be a digital-to-analog converter (DAC). The precondition for the digital-to-analog converter to adjust the capacitance of the first varactor VD1 and / or the second varactor VD2 is to determine the DAC value of the digital-to-analog converter through the control module 10.

[0095] As an example, in the development and debugging, the control module 10 can control the DAC to input different voltages to the first varactor VD1 and the second varactor VD2 in the tuning unit, so as to change the capacitance of the first varactor VD1 and the second varactor VD2, and use the LC (inductance-capacitance) tuning principle to perform notch processing on the CA and ENDC combination with harmonic relationship. Specifically, the performance parameter (such as SCC sensitivity performance) under the current CA combination or ENDC combination can be obtained first. If the performance parameter does not reach the preset performance parameter standard, the DAC value (which can also be the voltage value of the first varactor VD1 and the second varactor VD2) corresponding to the current CA combination or ENDC combination is obtained from the preset library. Then, the control module 10 controls the modification of the DAC value based on the obtained DAC value. If there is no DAC value corresponding to the current CA combination or ENDC combination in the preset library, the DAC value can be adjusted while detecting whether the performance parameter reaches the preset standard. If the preset standard is reached, the DAC value corresponding to the CA combination or ENDC combination is stored in the preset library. For example, under the CA_8A-41A combination, different voltages can be input to the varactor through the DAC to adjust the capacitance of the varactor, so as to increase the suppression of the B8 main frequency multiplication point. The appropriate DAC value is selected through the SCC sensitivity performance without causing great influence on the main frequency, and the DAC value at this time is recorded through the control module 10. Similarly, for the CA_12A-66A combination, the DAC value suitable for the B12 frequency band at this time can be recorded.

[0096] The embodiment provides a radio frequency circuit. By adding a tuning filter module between the antenna switch and the antenna, and controlling the tuning filter module through the control module, the radio frequency index of the signal processing module under carrier aggregation or dual connectivity combination can be effectively improved. The tuning filter module can also replace the harmonic suppression circuit built by multiple discrete devices, does not affect the miniaturization design of the signal processing module, and can reduce the cost and debugging difficulty.

[0097] In addition, the electronic device provided in the embodiment of the present application comprises the radio frequency circuit provided in the above embodiment.

[0098] Since the electronic device provided in the embodiment of the present application comprises the radio frequency circuit provided in the above embodiment, the electronic device has the beneficial effects of the radio frequency circuit provided in the above embodiment. For details of the specific working process and principle of the radio frequency circuit, refer to the radio frequency circuit provided in the above embodiments, which will not be repeated here, and all are within the protection scope of the present embodiment.

[0099] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0100] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated or implicitly indicating the number of technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B schemes that satisfy at the same time.

[0101] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0102] It should also be understood that, in the description of the embodiments of the present application, the reference to "one embodiment" or "some embodiments" or the like means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Therefore, the appearance of expressions such as "in one embodiment", "in some embodiments", "in other some embodiments", "in yet some embodiments" and the like in different places in the specification does not necessarily refer to the same embodiment, but means "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprise", "include", "have" and their variants mean "including but not limited to", unless otherwise specifically emphasized.

[0103] It should be noted that the technical solutions of various embodiments of the present application can be combined with each other, but must be based on the realization by the skilled person in the art, and when the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0104] The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A radio frequency circuit, characterized by The radio frequency circuit comprises a control module, a signal processing module, an antenna switch, a tuning filter module and an antenna; The first end of the control module is electrically connected to the first end of the signal processing module, the second end of the control module is electrically connected to the controlled end of the tuning filter module, the second end of the signal processing module is electrically connected to the first end of the antenna switch, the second end of the antenna switch is electrically connected to the first end of the tuning filter module, the second end of the tuning filter module is electrically connected to the antenna, and the tuning filter module is used to improve the radio frequency index of the signal processing module under carrier aggregation or dual connection combination.

2. The radio frequency circuit of claim 1, wherein, The tuning filter module comprises: a matched filter unit, the first end of the matched filter unit being electrically connected to the second end of the antenna switch, and the second end of the matched filter unit being electrically connected to the antenna; at least one tuning unit, the first end of the at least one tuning unit being electrically connected to the matched filter unit; a controlled adjustment unit, the first end of the controlled adjustment unit being electrically connected to the second end of the control module, and the second end of the controlled adjustment unit being electrically connected to the second end of the at least one tuning unit, the controlled adjustment unit being used to adjust the operating parameters of the at least one tuning unit to improve the radio frequency index of the signal processing module under carrier aggregation or dual connection combination.

3. The radio frequency circuit of claim 2, wherein, The at least one tuning unit comprises a first tuning unit and a second tuning unit, and the matched filter unit comprises: a first capacitor, the first end of the first capacitor being electrically connected to the antenna switch, and the second end of the first capacitor being electrically connected to the first end of the first tuning unit; a second capacitor, the first end of the second capacitor being electrically connected to the first end of the first tuning unit, and the second end of the second capacitor being electrically connected to the first end of the second tuning unit; a third capacitor, the first end of the third capacitor being electrically connected to the first end of the second tuning unit, and the second end of the third capacitor being electrically connected to the antenna; a fourth capacitor, the first end of the fourth capacitor being electrically connected to the second end of the first capacitor, and the second end of the fourth capacitor being grounded; a fifth capacitor, the first end of the fifth capacitor being electrically connected to the second end of the second capacitor, and the second end of the fifth capacitor being grounded.

4. The radio frequency circuit of claim 3, wherein, The first tuning unit comprises: a first inductor, the first end of the first inductor being electrically connected to the second end of the first capacitor; a sixth capacitor, the first end of the sixth capacitor being electrically connected to the second end of the first inductor; a first varactor diode, the cathode of the first varactor diode being electrically connected to the second end of the sixth capacitor, and the anode of the first varactor diode being grounded; a first resistor, the first end of the first resistor being electrically connected to the cathode of the first varactor diode, and the second end of the first resistor being electrically connected to the second end of the controlled adjustment unit; a seventh capacitor, the first end of the seventh capacitor being electrically connected to the second end of the first resistor, and the second end of the seventh capacitor being grounded.

5. The radio frequency circuit of claim 4, wherein, The second tuning unit comprises: a second inductor, the first end of the second inductor being electrically connected to the second end of the second capacitor; an eighth capacitor, the first end of the eighth capacitor being electrically connected to the second end of the second inductor; a second varactor diode, a cathode of the second varactor diode being electrically connected to a second end of the eighth capacitor, an anode of the second varactor diode being grounded; a second resistor, a first end of the second resistor being electrically connected to the cathode of the second varactor diode, a second end of the second resistor being electrically connected to a second end of the controlled adjustment unit; a ninth capacitor, a first end of the ninth capacitor being electrically connected to the second end of the second resistor, a second end of the ninth capacitor being grounded.

6. The radio frequency circuit of claim 5, wherein, The controlled adjustment unit comprises a digital-to-analog converter, the digital-to-analog converter being configured to adjust a capacitance of the first varactor diode and / or the second varactor diode, so as to improve a radio frequency index of the signal processing module under a carrier aggregation or a dual connectivity combination.

7. The radio frequency circuit of any one of claims 1 to 6, wherein, The control module comprises a central processing unit.

8. The radio frequency circuit of any one of claims 1 to 6, wherein, The signal processing module comprises: a radio transceiver, a first end of the radio transceiver being electrically connected to a first end of the control module; a power amplifier, a first end of the power amplifier being electrically connected to a second end of the radio transceiver; a signal transceiving unit, a first end of the signal transceiving unit being electrically connected to a second end of the power amplifier, a second end of the signal transceiving unit being electrically connected to a first end of the antenna switch.

9. The radio frequency circuit of claim 8, wherein, The signal transceiving unit comprises at least one duplexer, the at least one duplexer being configured to transmit and receive signals of at least one frequency band.

10. An electronic device, comprising: The electronic device comprises the radio frequency circuit according to any one of claims 1 to 9.

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