Carrier aggregation circuit and intelligent terminal

Abstract

The utility model provides a carrier aggregation circuit and an intelligent terminal, and the circuit comprises an antenna module which is used for receiving a plurality of frequency band signals; the first resonance circuit module is used for passing a preset frequency band signal corresponding to the first resonance circuit module; the first end of the second resonance circuit module is directly connected with the first end of the first resonance circuit module and is connected to the antenna module; the second resonance circuit module is used for passing through a preset frequency band signal corresponding to the second resonance circuit module; and the signal receiving and transmitting module is connected with the second end of the first resonance circuit module and the second end of the second resonance circuit module, and the signal receiving and transmitting module is used for demodulating the multiple frequency band signals. The circuit is used for achieving the effect of reducing the circuit cost.

Description

Technical Field

[0001] The present application relates to the field of radio frequency communication technology, and in particular to a carrier aggregation circuit and a smart terminal. Background Art

[0002] With the development of radio frequency technology in the field of communication technology, radio frequency bands have also increased. The vision of carrier aggregation function in radio frequency circuits requires that frequency band circuits with multiple carrier combinations can work simultaneously.

[0003] In the process of conceiving and implementing this application, the inventors found that there are at least the following problems: In some schemes, the RF diversity receiving circuit supporting the carrier aggregation function usually needs to use a frequency divider to realize the simultaneous reception of multiple frequency band signals, receive multiple frequency band signals through the antenna, and enter the frequency divider through the output port of the multi-way switch to separate the signals of multiple frequency bands, and the multiple divided frequency bands enter the filters of each frequency band respectively to realize the function of receiving and processing multiple frequency band signals at the same time. However, in the implementation process, the frequency divider device is large, occupies a large PCB area, and the insertion loss of the mid-high frequency divider is large, which affects the receiving performance.

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

[0005] The embodiments of the present application provide a carrier aggregation circuit and a smart terminal to achieve the effect of reducing circuit costs.

[0006] In a first aspect, an embodiment of the present application provides a carrier aggregation circuit, the circuit comprising:

[0007] An antenna module, used for receiving signals of multiple frequency bands;

[0008] A first resonant circuit module, the first resonant circuit module is used to pass a preset frequency band signal corresponding to the first resonant circuit module;

[0009] A second resonant circuit module, wherein a first end of the second resonant circuit module is connected to a first end of the first resonant circuit module and is connected to the antenna module; the second resonant circuit module is used to pass a preset frequency band signal corresponding to the second resonant circuit module;

[0010] The signal transceiver module is connected to the second end of the first resonant circuit module and the second end of the second resonant circuit module respectively, and the signal transceiver module is used to demodulate multiple frequency band signals.

[0011] Optionally, the circuit further includes a multi-way switch module; a first end of the multi-way switch module is connected to the antenna module; a second end of the multi-way switch module is respectively connected to a first end of the first resonant circuit module and a first end of the second resonant circuit module.

[0012] Optionally, the first resonant circuit module includes a first capacitor and a first inductor.

[0013] Optionally, one end of the first inductor is connected to the first end of the second resonant circuit module and to the antenna module, and the other end of the first inductor is grounded.

[0014] Optionally, one end of the first capacitor is respectively connected to one end of the first inductor and the first end of the second resonant circuit module, and is connected to the antenna module, and the other end of the first capacitor is connected to the signal transceiver module.

[0015] Optionally, the second resonant circuit module includes a third inductor, a third capacitor and a fourth capacitor.

[0016] Optionally, one end of the third capacitor is connected to the first end of the first resonant circuit module and is connected to the antenna module.

[0017] Optionally, one end of the third inductor is connected to the other end of the third capacitor, and the other end of the third inductor is grounded.

[0018] Optionally, one end of the fourth capacitor is respectively connected to one end of the third inductor and the other end of the third capacitor, and the other end of the fourth capacitor is connected to the signal transceiver module.

[0019] Optionally, the circuit further includes a third resonant circuit module and a fourth resonant circuit module, and the third resonant circuit module includes a second capacitor, a second inductor, a fifth capacitor and a fourth inductor.

[0020] Optionally, one end of the fourth inductor is connected to the first end of the fourth resonant circuit module and to the antenna module, and the other end of the fourth inductor is grounded.

[0021] Optionally, one end of the fifth capacitor is respectively connected to one end of the fourth inductor and the first end of the fourth resonant circuit module, and is connected to the antenna module.

[0022] Optionally, one end of the second inductor is connected to the other end of the fifth capacitor, and the other end of the second inductor is grounded.

[0023] Optionally, one end of the second capacitor is respectively connected to one end of the second inductor and the other end of the fifth capacitor, and the other end of the second capacitor is connected to the signal transceiver module.

[0024] Optionally, the circuit further includes a first filtering module and a second filtering module.

[0025] Optionally, the first end of the first filtering module is connected to the second end of the first resonant circuit module, and the second end of the first filtering module is connected to the signal transceiver module.

[0026] Optionally, the first end of the second filtering module is connected to the second end of the second resonant circuit module, and the second end of the second filtering module is connected to the signal transceiver module.

[0027] Optionally, the first filtering module includes a first filtering unit and a second filtering unit; the first end of the first filtering unit is the first end of the filtering module; the second end of the first filtering unit is connected to the first end of the second filtering unit; and the second end of the second filtering unit is the second end of the filtering module.

[0028] Optionally, the first filtering unit includes an eighth capacitor, a ninth capacitor and a sixth inductor.

[0029] Optionally, one end of the eighth capacitor is connected to the second end of the first resonant circuit module, and the other end of the eighth capacitor is grounded.

[0030] Optionally, one end of the sixth inductor is respectively connected to one end of the eighth capacitor and the second end of the first resonant circuit module.

[0031] Optionally, one end of the ninth capacitor is respectively connected to the other end of the sixth inductor and the first end of the second filtering unit, and the other end of the ninth capacitor is grounded.

[0032] In a possible implementation, the circuit also includes a third filtering module; the third filtering module includes a fifth filtering unit and a sixth filtering unit; the fifth filtering unit includes a twelfth capacitor, a thirteenth capacitor and an eighth inductor; and the sixth filtering unit is a surface acoustic wave filter with dual output channels.

[0033] Optionally, one end of the twelfth capacitor is connected to the second end of the third resonant circuit module, and the other end of the twelfth capacitor is grounded.

[0034] Optionally, one end of the eighth inductor is respectively connected to one end of the twelfth capacitor and the second end of the third resonant circuit module.

[0035] Optionally, one end of the thirteenth capacitor is respectively connected to the other end of the eighth inductor and the first end of the second filtering unit, and the other end of the thirteenth capacitor is grounded.

[0036] An embodiment of the present application provides a smart terminal, comprising the carrier aggregation circuit as described above.

[0037] The carrier aggregation circuit and intelligent terminal provided in the embodiment of the present application can pass at least one of the multiple frequency band signals respectively by respectively setting the first resonant circuit module and the second resonant circuit module on different frequency division branches, and the first resonant circuit module and the second resonant circuit module are connected close to one end of the antenna module; in this way, the multiple different frequency band signals received from the antenna module can be respectively separated by the first resonant circuit module and the second resonant circuit module to directly complete the carrier aggregation. Compared with the traditional technology, the above structure can eliminate the use of the frequency divider, and at the same time can reduce the area of ​​the circuit board design, so as to achieve the effect of reducing the circuit cost. At the same time, compared with the design of the frequency divider, the direct connection of the path can also reduce the insertion loss of the line and improve the receiving performance of the RF signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0039] Figure 1 It is a structural schematic diagram of a radio frequency diversity receiving circuit without carrier aggregation in the prior art;

[0040] Figure 2 It is a structural schematic diagram of a radio frequency diversity receiving circuit supporting a carrier aggregation function in the prior art;

[0041] Figure 3 A schematic diagram of the structure of the carrier aggregation circuit provided in the embodiment of the present application Figure 1 ;

[0042] Figure 4 A schematic diagram of the structure of the carrier aggregation circuit provided in the embodiment of the present application Figure 2 ;

[0043] Figure 5 A schematic diagram of the structure of the carrier aggregation circuit provided in the embodiment of the present application Figure 3 ;

[0044] Figure 6 Insertion loss simulation results of the carrier aggregation circuit provided in the embodiment of the present application are shown in FIG. Figure 1 ;

[0045] Figure 7 A simulation diagram of a Smith chart of a carrier aggregation circuit provided in an embodiment of the present application Figure 1 ;

[0046] Figure 8 Insertion loss simulation results of the carrier aggregation circuit provided in the embodiment of the present application are shown in FIG. Figure 2 ;

[0047] Fig. 9 A simulation diagram of a Smith chart of a carrier aggregation circuit provided in an embodiment of the present application Figure 2 ;

[0048] Fig.10 A schematic diagram of the hardware structure of an intelligent terminal for implementing various embodiments of the present application.

[0049] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0050] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0051] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. Optionally, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context in the specific embodiment.

[0052] It should be understood that, although the terms first, second, third, etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this article, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination". Furthermore, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or", "and / or", "including at least one of the following" etc. used in this application can be interpreted as inclusive, or mean any one or any combination. For example, “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”, and for another example, “A, B or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”. An exception to this definition will only occur when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0053] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0054] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0055] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0056] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0057] In some schemes, such as Figure 1 As shown, a conventional RF diversity receiving circuit without carrier aggregation includes an antenna 110, an SP8T switch 120 and a transceiver 130. Each frequency band signal passes through the SP8T switch 120 (multi-way switch) and works independently. Only one frequency band signal can be received at the same time.

[0058] The implementation of the carrier aggregation function enables multiple combined frequency band circuits to work simultaneously, that is, multiple frequency band signals can be received simultaneously. Figure 2 As shown, the RF diversity receiving circuit supporting the carrier aggregation function usually needs to realize the simultaneous reception of multiple frequency band signals through the divider 140, receive the signals of multiple frequency bands through the antenna 110, and enter the divider 140 through the output port of the SP8T switch 120 to separate the signals of multiple frequency bands. The multiple divided frequency bands enter the filters 150 of each frequency band respectively, and finally enter the transceiver 130 for demodulation, so as to realize the function of receiving and processing multiple frequency band signals at the same time, realize the carrier signal processing between frequency bands, and improve the efficiency of processing multiple RF frequency bands.

[0059] The embodiments of the present application provide a carrier aggregation circuit and a smart terminal. By eliminating the use of a frequency divider, the first resonant circuit and the second resonant circuit are directly used to divide the frequency band signal, and the first resonant circuit module and the second resonant circuit module are directly connected close to one end of the antenna module, so as to realize the function of carrier aggregation, thereby relying on the use of a frequency divider, reducing the area of ​​the circuit board, and the cost of using the frequency divider, and solving the technical problem of high circuit cost.

[0060] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0061] Figure 3 Structural diagram of the carrier aggregation circuit provided in this application Figure 1 ,like Figure 3 As shown, the circuit includes:

[0062] Antenna module 310, used for receiving signals of multiple frequency bands;

[0063] A first resonant circuit module 320, the first resonant circuit module 320 is used to pass a preset frequency band signal corresponding to the first resonant circuit module 320;

[0064] A second resonant circuit module 330, wherein a first end of the second resonant circuit module 330 is connected to a first end of the first resonant circuit module 320 and is connected to the antenna module; the second resonant circuit module 330 is used to transmit a preset frequency band signal corresponding to the second resonant circuit module 330;

[0065] The signal transceiver module 340 is connected to the second end of the first resonant circuit module 320 and the second end of the second resonant circuit module 330 respectively. The signal transceiver module 340 is used to demodulate signals of multiple frequency bands.

[0066] Alternatively, the antenna module 310 may be a module for receiving or transmitting a radio frequency signal through the antenna 110. The antenna 110 may transform a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium (usually a free space), or vice versa.

[0067] Optionally, the first resonant circuit module 320 may be used to pass a preset specific frequency band.

[0068] Optionally, the second resonant circuit module 330 may be a module that passes a frequency band signal that is different from the corresponding frequency band signal passed by the first resonant circuit module 320. For example, the first resonant circuit module 320 may pass frequency band signal A, and the second resonant circuit module 330 may pass frequency band signal B. Frequency band signal A and frequency band signal B are signals of two different frequency bands. Optionally, the second resonant circuit module 330 may be a plurality of resonant circuit modules that are different from the first resonant circuit module 320. Optionally, the resonant circuit module A may be used as the first resonant circuit module 320, and the resonant circuit module B, the resonant circuit module C, and the resonant circuit module D may all be referred to as the second resonant circuit module 330; if the resonant circuit module B is used as the first resonant circuit module 320, the resonant circuit module A, the resonant circuit module C, and the resonant circuit module D may all be referred to as the second resonant circuit module 330. Optionally, there may be a plurality of second resonant circuit modules 330, that is, the carrier aggregation circuit 30 provided in the embodiment of the present application may realize the frequency division function of radio frequency signals of multiple (at least two) frequency bands.

[0069] Optionally, the signal transceiver module 340 can be a transceiver 130 for demodulating multiple frequency band signals, and can be used to demodulate RF signals of each frequency band. The signal transceiver module 340 can demodulate multiple frequency band signals received by the antenna module 310 to achieve RF communication.

[0070] Optionally, the antenna module 310 may be configured to receive radio frequency signals of multiple frequency bands. Optionally, the antenna module 310 may be Figure 1 The antenna 110 shown in FIG. 1 can receive or send radio frequency signals of multiple frequency bands, so as to achieve communication between signals of multiple different frequency bands.

[0071] Optionally, the first resonant circuit module 320 may be an LC circuit including a capacitor and an inductor; the first end of the first resonant circuit may be connected to the antenna module 310, so that at least one frequency band signal received by the antenna module 310 may enter the transceiver 130 for demodulation through the first resonant circuit module 320. The first end of the second resonant circuit module 330 is directly connected to the first end of the first resonant circuit module 320 and is connected to the antenna module 310. In this way, the antenna module 310 receives multiple frequency band signals, and the frequency band signal corresponding to the first resonant circuit module 320 can be separated by the first resonant circuit module 320, and the frequency band signal corresponding to the second resonant circuit module 330 can be separated by the second resonant circuit module 330. In this way, the function of carrier aggregation can be realized, and carrier signal processing between frequency bands can be realized, so that at least two frequency band circuits can work simultaneously. By eliminating the use of the frequency divider 140 and directly connecting the first resonant circuit module 320 and the second resonant circuit module 330 through the path between the first resonant circuit module 320 and the second resonant circuit module 330, the frequency division of multiple frequency band signals can be realized, and the area of ​​the circuit board and the material usage of the frequency divider 140 can be reduced, thereby reducing the circuit cost.

[0072] Optionally, the first resonant circuit module 320 and the second resonant circuit module 330 can respectively set parameters through the Smith chart of the single branch S11 (input reflection coefficient) to achieve the purpose of non-interference between the two frequency band signals.

[0073] Optionally, the signal transceiver module 340 may be provided with a plurality of frequency band signal receiving ports, which may be respectively connected to the second end of the first resonant circuit module 320 and the second end of the second resonant circuit module 330, and respectively used to receive the frequency band signal corresponding to the first resonant circuit module 320 and the frequency band signal corresponding to the second resonant circuit module 330. Figure 1 and Figure 2 The transceiver 130 shown in the figure can realize the demodulation processing of signals of different frequency bands. In this way, the above structure can realize the function of receiving and processing multiple frequency band signals at the same time, realize the carrier signal processing between frequency bands, and can eliminate the following Figure 2 The use of the frequency divider 140 shown reduces the area of ​​the circuit board, thereby reducing the cost of the circuit used.

[0074] The carrier aggregation circuit 30 provided in the embodiment of the present application can pass at least one of the multiple frequency band signals respectively by respectively setting the first resonant circuit module 320 and the second resonant circuit module 330 on different frequency division branches, and the first resonant circuit module 320 and the second resonant circuit module 330 are directly connected at one end close to the antenna module 310. In this way, the multiple different frequency band signals received from the antenna module 310 can be separated by the first resonant circuit module 320 and the second resonant circuit module 330 to directly complete the carrier aggregation. Compared with the traditional technology, the above structure can eliminate the use of the frequency divider, and at the same time can reduce the area of ​​the circuit board design, so as to achieve the effect of reducing the circuit cost. At the same time, compared with the design of the frequency divider, the direct connection of the path can also reduce the insertion loss of the line and improve the receiving performance of the RF signal.

[0075] Figure 4 Structural diagram of the carrier aggregation circuit provided in this application Figure 2 ,like Figure 4 As shown, in this embodiment Figure 3 Based on the embodiment, the carrier aggregation circuit 30 is described in detail. The first resonance circuit module 320 includes a first capacitor C1 and a first inductor L1.

[0076] Optionally, one end of the first inductor L1 is connected to the first end of the second resonant circuit module 330 and to the antenna module 310, and the other end of the first inductor L1 is grounded; one end of the first capacitor C1 is respectively connected to one end of the first inductor L1 and the first end of the second resonant circuit module 330, and is connected to the antenna module 310, and the other end of the first capacitor C1 is connected to the signal transceiver module 340.

[0077] Optionally, the first inductor L1 and the first capacitor C1 may form an LC resonant circuit, so that the frequency band signal of the branch where the first resonant circuit module 320 is located can pass through while suppressing the frequency band signals of other branches from passing through, thereby achieving the purpose of frequency division.

[0078] Optionally, one end of the first inductor L1 and the first capacitor C1 connected can be used as the first end of the first resonant circuit module 320; optionally, one end of the first inductor L1 and one end of the first capacitor C1 are connected to serve as the first end of the first resonant circuit module 320, then the antenna module 310 needs to be connected to one end of the first inductor L1 and one end of the first capacitor C1 respectively, and one end of the first inductor L1 and one end of the first capacitor C1 also need to be connected to the second resonant circuit module 330. The other end of the first capacitor C1 can be used as the second end of the first resonant circuit module 320 to connect the signal transceiver module 340; the other end of the first inductor L1 can be grounded. In this way, the first resonant circuit module 320 can be formed to complete the frequency division of the frequency band signal of the branch where the first resonant circuit module 320 is located, so that the use of the frequency divider 140 can be eliminated, and then the area of ​​the circuit board can be reduced, which is conducive to reducing the cost of the circuit.

[0079] Figure 4 Structural diagram of the carrier aggregation circuit provided in this application Figure 2 ,like Figure 4 As shown, in this embodiment Figure 3 Based on the embodiment, the carrier aggregation circuit 30 is described in detail. The second resonance circuit module 330 includes a third inductor L3, a third capacitor C3 and a fourth capacitor C4.

[0080] Optionally, one end of the third capacitor C3 is connected to the first end of the first resonant circuit module 320 and to the antenna module 310; one end of the third inductor L3 is connected to the other end of the third capacitor C3, and the other end of the third inductor L3 is grounded; one end of the fourth capacitor C4 is respectively connected to one end of the third inductor L3 and the other end of the third capacitor C3, and the other end of the fourth capacitor C4 is connected to the signal transceiver module 340.

[0081] Optionally, a matching circuit corresponding to the first resonant circuit module 320 can be formed by a third inductor L3, a third capacitor C3 and a fourth capacitor C4, so that the second resonant circuit module 330 is open circuit for the frequency band signal passing through the branch where the first resonant circuit module 320 is located, and the frequency band signal passing through the branch where the first resonant circuit module 320 is located cannot pass through the second resonant circuit module 330.

[0082] Optionally, one end of the third capacitor C3 can be used as the first end of the second resonant circuit module 330, and one end of the third capacitor C3 is connected to the first end of the first resonant circuit module 320, so that the input end between the branch where the first resonant circuit module 320 is located and the branch where the second resonant circuit module 330 is located is directly connected, and one end of the third capacitor C3 is also connected to the antenna module 310 to input the frequency band signal received by the antenna module 310 to achieve the purpose of frequency division. One end of the third inductor L3, one end of the fourth capacitor C4 and the other end of the third capacitor C3 can be connected to form a T-type connection between the third inductor L3, the fourth capacitor C4 and the third capacitor C3, and the other end of the third inductor L3 can be grounded. The other end of the fourth capacitor C4 can be used as the second end of the second resonant circuit module 330, so that the two frequency band signals passing through the second resonant circuit module 330 can enter the signal transceiver module 340 for demodulation. In this way, through the above structure, the use of the divider in the branch where the second resonant circuit module 330 is located can be reduced, and the frequency division of the RF frequency band signal can be realized, thereby reducing the area of ​​the circuit board and the material usage of the divider while completing the carrier aggregation function, thereby reducing the cost of the circuit board, and at the same time reducing the insertion loss of the divider and improving the RF reception performance.

[0083] The carrier aggregation circuit 30 provided in the embodiment of the present application can realize the carrier aggregation function of the branch where the second resonant circuit module 330 is located, and realize frequency division through the above-mentioned structure. In addition, the setting of the second resonant circuit module 330 can reduce the use of the frequency divider, thereby reducing the area of ​​the circuit board and the material use of the frequency divider, thereby achieving the effect of reducing the cost of the circuit. At the same time, it can reduce the insertion loss of the frequency divider and improve the RF reception performance.

[0084] Figure 4 Structural diagram of the carrier aggregation circuit provided in this application Figure 2 ,like Figure 4 As shown, in this embodiment Figure 3 Based on the embodiment, the carrier aggregation circuit 30 is described in detail. The carrier aggregation circuit also includes a third resonant circuit module 380 and a fourth resonant circuit module 390. The third resonant circuit module 380 includes a second capacitor C2, a second inductor L2, a fifth capacitor C5 and a fourth inductor L4.

[0085] Optionally, one end of the fourth inductor L4 is connected to the first end of the fourth resonant circuit module 390 and to the antenna module 310, and the other end of the fourth inductor L4 is grounded; one end of the fifth capacitor C5 is respectively connected to one end of the fourth inductor L4 and the first end of the fourth resonant circuit module 390, and is connected to the antenna module 310.

[0086] Optionally, one end of the second inductor L2 is connected to the other end of the fifth capacitor C5, and the other end of the second inductor L2 is grounded; one end of the second capacitor C2 is respectively connected to one end of the second inductor L2 and the other end of the fifth capacitor C5, and the other end of the second capacitor C2 is connected to the signal transceiver module 340.

[0087] Optionally, the LC resonant circuit may further include a second inductor L2 and a second capacitor C2 to meet the requirement of passing signals of two frequency bands, thereby achieving the purpose of dividing the frequency of radio frequency signals of multiple frequency bands.

[0088] Optionally, one end of the second inductor L2 and the second capacitor C2 connected can be connected to the other end of the fifth capacitor C5; for example, one end of the second inductor L2 is connected to one end of the second capacitor C2, then one end of the second inductor L2 and one end of the second capacitor C2 are both connected to the other end of the fifth capacitor C5, for example, the second inductor L2, the second capacitor C2 and the fifth capacitor C5 can form a T-type connection structure through the above connection. At this time, the other end of the second capacitor C2 can be used as the second end of the third resonant circuit module 380, and is connected to the signal transceiver module 340, so that the two frequency band signals passing through the third resonant circuit module 380 can enter the signal transceiver module 340 for demodulation. The other end of the second inductor L2 can be grounded. In this way, through the above structure, it can meet the branch where the two frequency band signals pass through the third resonant circuit module 380. Further, the two frequency band signals can be divided by the filter circuit later, and more frequency band signals can be processed simultaneously, thereby improving the efficiency of frequency band signal processing. At the same time, the above structure eliminates the use of a frequency divider, which can reduce the circuit board area and the insertion loss of the frequency divider, thereby reducing the circuit cost and improving the performance of the radio frequency path.

[0089] like Figure 4 As shown, in this embodiment Figure 3 Based on the embodiment, the carrier aggregation circuit 30 is described in detail. The carrier aggregation circuit 30 also includes a fourth resonance circuit module 390. The fourth resonance circuit module 390 includes a fifth inductor L5, a sixth capacitor C6 and a seventh capacitor C7.

[0090] Optionally, one end of the sixth capacitor C6 is connected to the first end of the third resonant circuit module 380 and to the antenna module 310; one end of the fifth inductor L5 is connected to the other end of the sixth capacitor C6, and the other end of the fifth inductor L5 is grounded; one end of the seventh capacitor C7 is respectively connected to one end of the fifth inductor L5 and the other end of the sixth capacitor C6, and the other end of the seventh capacitor C7 is connected to the signal transceiver module 340.

[0091] Optionally, a matching circuit corresponding to the third resonant circuit module 380 can be formed by a fifth inductor L5, a sixth capacitor C6 and a seventh capacitor C7, so that the fourth resonant circuit module 390 is open to the frequency band signal passing through the branch where the third resonant circuit module 380 is located, and the frequency band signal passing through the branch where the third resonant circuit module 380 is located cannot pass through the fourth resonant circuit module 390.

[0092] Optionally, the fourth resonant circuit module 380 has the same structure as the second resonant circuit module 330. Optionally, the parameters of the capacitor and inductor included in the fourth resonant circuit module 380 may be the same as or different from the parameters of the capacitor and inductor included in the second resonant circuit module 330. When the capacitor and inductor parameters are the same, the fourth resonant circuit module 380 and the second resonant circuit module 330 may pass the same frequency band signal. When the capacitor and inductor parameters are different, the fourth resonant circuit module 380 and the second resonant circuit module 330 may pass different frequency band signals.

[0093] The carrier aggregation circuit 30 provided in the embodiment of the present application, through the above-mentioned structure, can meet the requirement that at least one frequency band signal passes through the branch where the first resonant circuit module 320 is located, thereby reducing the use of dividers, reducing the area of ​​​​the circuit board, and reducing the material use of the divider, thereby reducing the cost of the circuit. In addition, the insertion loss of the divider is reduced, thereby improving the performance of the RF path.

[0094] Figure 5 Structural diagram of the carrier aggregation circuit provided in this application Figure 3 ,like Figure 5 As shown, in this embodiment Figure 3 Based on the embodiment, the carrier aggregation circuit 30 is described in detail. Optionally, the carrier aggregation circuit 30 further includes a multi-way switch module 350, a first filter module 360, a second filter module 370, a third filter module 410, and a fourth filter module 420; the first resonant circuit module 320 includes a first capacitor C1 and a first inductor L1. Optionally, the second resonant circuit module 330 includes a third inductor L3, a third capacitor C3, and a fourth capacitor C4; the third resonant circuit includes a second capacitor C2, a second inductor L2, a fifth capacitor C5, and a fourth inductor L4; the fourth resonant circuit module 390 includes a fifth inductor L5, a sixth capacitor C6, and a seventh capacitor C7.

[0095] Optionally, the first end of the multi-way switch module 350 is connected to the antenna module 310; the first end of the first resonant circuit module 320 is connected to the first end of the second resonant circuit module 330, and is connected to one of the second ends of the multi-way switch module 350; the first end of the third resonant circuit module 380 is connected to the first end of the fourth resonant circuit module 390, and is connected to the other second end of the multi-way switch module 350.

[0096] Optionally, the multi-way switch module 350 may be a switch having a plurality of second ends, and each second end of the multi-way switch module 350 may be respectively used as an output end of a group of frequency band signals, wherein a group of frequency band signals refers to frequency band signals divided by two branches, and the two branches may be provided with the first resonant circuit module 320 and the second resonant circuit module 330, or may be provided with the third resonant circuit module 380 and the fourth resonant circuit module 390. Optionally, the multi-way switch module 350 may be as follows: Figure 1-Figure 2 An SP8T switch 120 is shown.

[0097] Optionally, the first end of the multi-way switch module 350 is connected to the antenna module 310 for transmitting the frequency band signal of the radio frequency received by the antenna module 310. One of the second ends of the multi-way switch module 350 can be respectively connected to the first end of the first resonant circuit module 320 and the first end of the second resonant circuit module 330, so that a T-type connection is formed between the second end of the multi-way switch module 350, the first end of the first resonant circuit module 320 and the second resonant circuit module 330. The other second end of the multi-way switch module 350 can be respectively connected to the first end of the third resonant circuit module 380 and the first end of the fourth resonant circuit module 390, so that a T-type connection is formed between the other second end of the multi-way switch module 350, the first end of the third resonant circuit module 380 and the fourth resonant circuit module 390. Through the above structure, the frequency band signal received by the antenna module 310 can be controlled by the multi-way switch module 350 to enter the corresponding required branch for frequency division, thereby achieving the purpose of receiving at least two frequency band signals. Figure 5 As shown, the two second ends of the multi-way switch module 350 can be respectively connected to two groups of frequency division circuits, where the frequency division circuit refers to a circuit including a first resonant circuit module 320 and a second resonant circuit module 330 connected to each other, and a third resonant circuit module 380 and a fourth resonant circuit module 390 connected to each other.

[0098] In some embodiments, one end of the first inductor L1 is respectively connected to the antenna module 310 and the first end of the second resonance module, and the other end of the first inductor L1 is grounded; one end of the first capacitor C1 is respectively connected to one end of the first inductor L1 and the second resonance circuit module 330, and is connected to the antenna module 310, and the other end of the first capacitor C1 is connected to the signal transceiver module 340.

[0099] Optionally, the first inductor L1 and the first capacitor C1 may form an LC resonant circuit, so that the frequency band signal of the branch where the first resonant circuit module 320 is located can pass through while suppressing the frequency band signals of other branches from passing through, thereby achieving the purpose of frequency division.

[0100] Optionally, one end of the first inductor L1 and the first capacitor C1 connected can be used as the first end of the first resonant circuit module 320; optionally, one end of the first inductor L1 and one end of the first capacitor C1 are connected to serve as the first end of the first resonant circuit module 320, then the second end of the multi-way switch module 350 needs to be connected to one end of the first inductor L1 and one end of the first capacitor C1 respectively, and one end of the first inductor L1 and one end of the first capacitor C1 also need to be connected to the second resonant circuit module 330. The other end of the first capacitor C1 can be used as the second end of the first resonant circuit module 320 to connect the signal transceiver module 340; the other end of the first inductor L1 can be grounded. In this way, the first resonant circuit module 320 can be formed to complete the frequency division of the frequency band signal of the branch where the first resonant circuit module 320 is located, so that the use of the frequency divider 140 can be eliminated, and then the area of ​​the circuit board can be reduced, which is conducive to reducing the cost of the circuit.

[0101] In some embodiments, one end of the third capacitor C3 is connected to the first end of the first resonant circuit module 320 and to the antenna module 310; one end of the third inductor L3 is connected to the other end of the third capacitor C3, and the other end of the third inductor L3 is grounded; one end of the fourth capacitor C4 is respectively connected to one end of the third inductor L3 and the other end of the third capacitor C3, and the other end of the fourth capacitor C4 is connected to the signal transceiver module 340.

[0102] Optionally, a matching circuit corresponding to the first resonant circuit module 320 can be formed by a third inductor L3, a third capacitor C3 and a fourth capacitor C4, so that the second resonant circuit module 330 is open circuit for the frequency band signal passing through the branch where the first resonant circuit module 320 is located, so that the frequency band signal passing through the branch where the first resonant circuit module 320 is located cannot pass through the second resonant circuit module 330.

[0103] Optionally, one end of the third capacitor C3 can be used as the first end of the second resonant circuit module 330, and one end of the third capacitor C3 is respectively connected to one end of the first capacitor C1 and one end of the first inductor L1, so that the input end between the branch where the first resonant circuit module 320 is located and the branch where the second resonant circuit module 330 is located is directly connected, and one end of the third capacitor C3 is also connected to the antenna module 310 to input the frequency band signal received by the antenna module 310 to achieve the purpose of frequency division. One end of the third inductor L3, one end of the fourth capacitor C4 and the other end of the third capacitor C3 can be connected to form a T-type connection between the third inductor L3, the fourth capacitor C4 and the third capacitor C3, and the other end of the third inductor L3 can be grounded. The other end of the fourth capacitor C4 can be used as the second end of the second resonant circuit module 330, so that the two frequency band signals passing through the second resonant circuit module 330 can enter the signal transceiver module 340 for demodulation. Thus, through the above structure, the use of the frequency divider 140 in the branch where the second resonant circuit module 330 is located can be reduced, and the frequency division of the radio frequency band signal can be achieved.

[0104] Optionally, by observing the Smith chart of the single branch S11, the frequency band signal in the frequency division branch is adjusted to the vicinity of the 50Ω center point through matching simulation, and the frequency band signal out of the frequency division branch is adjusted to the vicinity of the open circuit point through the matching network, so as to achieve the following Figure 5 The purpose of the two frequency band signals connected to the second end of the same multi-way switch module 350 is to prevent them from interfering with each other.

[0105] In some embodiments, the third resonant circuit module includes a second capacitor C2, a second inductor L2, a fifth capacitor C5 and a fourth inductor L4.

[0106] Optionally, one end of the fourth inductor L4 is connected to the first end of the fourth resonant circuit module 390 and connected to the antenna module 310, and the other end of the fourth inductor L4 is grounded; one end of the fifth capacitor C5 is respectively connected to one end of the fourth inductor L4 and the first end of the fourth resonant circuit module 390, and connected to the antenna module 310. Optionally, one end of the second inductor L2 is connected to the other end of the first capacitor C1, and the other end of the second inductor L2 is grounded; one end of the second capacitor C2 is respectively connected to one end of the second inductor L2 and the other end of the first capacitor C1, and the other end of the second capacitor C2 is connected to the signal transceiver module 340.

[0107] Optionally, the LC resonant circuit may further include a second inductor L2 and a second capacitor C2 to meet the requirement of passing signals of two frequency bands, thereby achieving the purpose of dividing the frequency of radio frequency signals of multiple frequency bands.

[0108] Optionally, one end of the second inductor L2 and the second capacitor C2 connected can be connected to the other end of the fifth capacitor C5; optionally, one end of the second inductor L2 is connected to one end of the second capacitor C2, then one end of the second inductor L2 and one end of the second capacitor C2 are both connected to the other end of the fifth capacitor C5, for example, the second inductor L2, the second capacitor C2 and the fifth capacitor C5 can form a T-type connection structure through the above connection. At this time, the other end of the second capacitor C2 can be used as the second end of the third resonant circuit module 380, and is connected to the signal transceiver module 340, so that the two frequency band signals passing through the third resonant circuit module 380 can enter the signal transceiver module 340 for demodulation. The other end of the second inductor L2 can be grounded. In this way, through the above structure, it can meet the branch where the two frequency band signals pass through the third resonant circuit module 380. Further, the two frequency band signals can be divided by the filter circuit later, and more frequency band signals can be processed simultaneously, thereby improving the efficiency of frequency band signal processing.

[0109] In some embodiments, the fourth resonant circuit module 390 includes a fifth inductor L5, a sixth capacitor C6 and a seventh capacitor C7. Optionally, one end of the sixth capacitor C6 is connected to the first end of the third resonant circuit module 380 and is connected to the antenna module 310; one end of the fifth inductor L5 is connected to the other end of the sixth capacitor C6, and the other end of the fifth inductor L5 is grounded; one end of the seventh capacitor C7 is respectively connected to one end of the fifth inductor L5 and the other end of the sixth capacitor C6, and the other end of the seventh capacitor C7 is connected to the signal transceiver module 340.

[0110] Optionally, a matching circuit corresponding to the third resonant circuit module 380 can be formed by a fifth inductor L5, a sixth capacitor C6 and a seventh capacitor C7, so that the fourth resonant circuit module 390 is open to the frequency band signal passing through the branch where the third resonant circuit module 380 is located, and the frequency band signal passing through the branch where the third resonant circuit module 380 is located cannot pass through the fourth resonant circuit module 390.

[0111] Optionally, the fourth resonant circuit module 380 has the same structure as the second resonant circuit module 330. Optionally, the parameters of the capacitor and inductor included in the fourth resonant circuit module 380 may be the same as or different from the parameters of the capacitor and inductor included in the second resonant circuit module 330. When the capacitor and inductor parameters are the same, the fourth resonant circuit module 380 and the second resonant circuit module 330 may pass the same frequency band signal. When the capacitor and inductor parameters are different, the fourth resonant circuit module 380 and the second resonant circuit module 330 may pass different frequency band signals.

[0112] Optionally, one end of the sixth capacitor C6 can be used as the first end of the fourth resonant circuit module 390, and one end of the sixth capacitor C6 is respectively connected to one end of the fifth capacitor C5 and one end of the fourth inductor L4, so that the input end between the branch where the third resonant circuit module 380 is located and the branch where the fourth resonant circuit module 390 is located is directly connected, and one end of the sixth capacitor C6 is also connected to the antenna module 310 to input the frequency band signal received by the antenna module 310 to achieve the purpose of frequency division. One end of the fifth inductor L5, one end of the seventh capacitor C7 and the other end of the sixth capacitor C6 can be connected to form a T-type connection between the fifth inductor L5, the seventh capacitor C7 and the sixth capacitor C6, and the other end of the fifth inductor L5 can be grounded. The other end of the seventh capacitor C7 can be used as the second end of the fourth resonant circuit module 390, so that the two frequency band signals passing through the fourth resonant circuit module 390 can enter the signal transceiver module 340 for demodulation. Thus, through the above structure, the use of the frequency divider 140 in the branch where the fourth resonant circuit module 390 is located can be reduced, and the frequency division of the radio frequency band signal can be achieved.

[0113] In some embodiments, the first end of the first filter module 360 ​​is connected to the second end of the first resonant circuit module 320, and the second end of the first filter module 360 ​​is connected to the signal transceiver module 340. The first end of the second filter module 370 is connected to the second end of the second resonant circuit module 330, and the second end of the second filter module 370 is connected to the signal transceiver module 340. The first end of the third filter module 410 is connected to the second end of the third resonant circuit module 380, and the second end of the third filter module 410 is connected to the signal transceiver module 340. The first end of the fourth filter module 420 is connected to the second end of the fourth resonant circuit module 390, and the second end of the fourth filter module 420 is connected to the signal transceiver module 340.

[0114] Optionally, the first filtering module 360 ​​includes a first filtering unit 361 and a second filtering unit 362; the first end of the first filtering unit 361 is the first end of the first filtering module 360; the second end of the first filtering unit 361 is connected to the first end of the second filtering unit 362; the second end of the second filtering unit 362 is the second end of the first filtering module 360.

[0115] Optionally, the first filtering unit 361 includes an eighth capacitor C8, a ninth capacitor C9 and a sixth inductor L6; the second filtering unit 362 is a surface acoustic wave filter. One end of the eighth capacitor C8 is connected to the second end of the first resonant circuit module 320, and the other end of the eighth capacitor C8 is grounded; one end of the sixth inductor L6 is respectively connected to one end of the eighth capacitor C8 and the second end of the first resonant circuit module 320; one end of the ninth capacitor C9 is respectively connected to the other end of the sixth inductor L6 and the first end of the second filtering unit 362, and the other end of the ninth capacitor C9 is grounded.

[0116] Optionally, one end of the eighth capacitor C8 is connected to the other end of the first capacitor C1, and the other end of the eighth capacitor C8 is grounded; one end of the sixth inductor L6 is respectively connected to one end of the eighth capacitor C8 and the other end of the first capacitor C1, one end of the ninth capacitor C9 is respectively connected to the other end of the sixth inductor L6 and the first end of the surface acoustic wave filter, and the other end of the ninth capacitor C9 is grounded; the second end of the surface acoustic wave filter is connected to the signal transceiver module 340. In this way, through the above structure, the first filter module 360 ​​can be formed, which can suppress the frequency band signals of other branches except the branch where the first resonant circuit module 320 is located, and is limited to the frequency band signal of the current branch where the first filter module 360 ​​is located, so as to achieve the effect of frequency division and ensure the quality of the frequency band signal of the current branch demodulated by the signal transceiver module 340.

[0117] Optionally, the second filtering module 370 includes a third filtering unit 371 and a fourth filtering unit 372; the first end of the third filtering unit 371 is the first end of the second filtering module 370; the second end of the third filtering unit 371 is connected to the first end of the fourth filtering unit 372; the second end of the fourth filtering unit 372 is the second end of the second filtering module 370.

[0118] Optionally, the third filtering unit 371 includes a tenth capacitor C10, an eleventh capacitor C11 and a seventh inductor L7; the fourth filtering unit 372 is a first surface acoustic wave filter; one end of the tenth capacitor C10 is connected to the second end of the second resonant circuit module 330, and the other end of the tenth capacitor C10 is grounded; one end of the seventh inductor L7 is respectively connected to one end of the tenth capacitor C10 and the second end of the second resonant circuit module 330; one end of the eleventh capacitor C11 is respectively connected to the other end of the seventh inductor L7 and the first end of the second filtering unit 362, and the other end of the eleventh capacitor C11 is grounded.

[0119] Optionally, one end of the tenth capacitor C10 is connected to the other end of the fourth capacitor C4, and the other end of the tenth capacitor C10 is grounded; one end of the seventh inductor L7 is respectively connected to one end of the tenth capacitor C10 and the other end of the fourth capacitor C4, one end of the eleventh capacitor C11 is respectively connected to the other end of the seventh inductor L7 and the first end of the fourth filtering unit 372, and the other end of the eleventh capacitor C11 is grounded; the second end of the fourth filtering unit 372 is connected to the signal transceiver module 340. In this way, through the above structure, the second filtering module 370 can be formed, which can suppress the frequency band signals of other branches except the branch where the second resonant circuit module 330 is located, and is limited to passing the frequency band signal of the current branch where the second filtering module 370 is located, so as to achieve the effect of frequency division and ensure the quality of the frequency band signal of the current branch demodulated by the signal transceiver module 340.

[0120] Optionally, the third filter module 410 includes a fifth filter unit 411 and a sixth filter unit 412; the first end of the fifth filter unit 411 is the first end of the third filter module 410; the second end of the fifth filter unit 411 is connected to the first end of the sixth filter unit 412; the second end of the sixth filter unit 412 is the second end of the third filter module 410.

[0121] Optionally, the fifth filtering unit 411 includes a twelfth capacitor C12, a thirteenth capacitor C13 and an eighth inductor L8; the sixth filtering unit 362 is a surface acoustic wave filter with dual output channels. One end of the twelfth capacitor C12 is connected to the second end of the third resonant circuit module 380, and the other end of the twelfth capacitor C12 is grounded; one end of the eighth inductor L8 is respectively connected to one end of the twelfth capacitor C12 and the second end of the third resonant circuit module 380; one end of the thirteenth capacitor C13 is respectively connected to the other end of the eighth inductor L8 and the first end of the sixth filtering unit 412, and the other end of the thirteenth capacitor C13 is grounded.

[0122] Optionally, when the third resonant circuit module 380 passes two frequency band signals, the sixth filtering unit 412 is a surface acoustic wave filter with dual output channels; the dual output channels of the surface acoustic wave filter are respectively used to output one of the frequency band signals.

[0123] One end of the twelfth capacitor C12 is connected to the other end of the second capacitor C2, and the other end of the twelfth capacitor C12 is grounded; one end of the sixth inductor L6 is respectively connected to one end of the twelfth capacitor C12 and the other end of the second capacitor C2, one end of the thirteenth capacitor C13 is respectively connected to the other end of the sixth inductor L6 and the first end of the surface acoustic wave filter of the dual output channel (the sixth filtering unit 412), and the other end of the thirteenth capacitor C13 is grounded; the two second ends of the surface acoustic wave filter of the dual output channel (the sixth filtering unit 412) are respectively connected to the signal transceiver module 340. In this way, through the above structure, the third filtering module 410 can be formed, and the frequency band signals of other branches other than the branch where the third resonant circuit module 380 is located can be suppressed, and the frequency band signals of the current branch where the third filtering module 410 is located can be limited to pass, so as to achieve the effect of frequency division and ensure the quality of the frequency band signal of the current branch demodulated by the signal transceiver module 340.

[0124] Optionally, the fourth filter module 420 includes a seventh filter unit 421 and an eighth filter unit 422; the first end of the seventh filter unit 421 is the first end of the fourth filter module 420; the second end of the seventh filter unit 421 is connected to the first end of the eighth filter unit 422; the second end of the eighth filter unit 422 is the second end of the fourth filter module 420.

[0125] Optionally, the seventh filtering unit 421 includes a fourteenth capacitor C14, a fifteenth capacitor C15 and a ninth inductor L9; the eighth filtering unit 422 is a surface acoustic wave filter; one end of the fourteenth capacitor C14 is connected to the second end of the fourth resonant circuit module 390, and the other end of the fourteenth capacitor C14 is grounded; one end of the ninth inductor L9 is respectively connected to one end of the fourteenth capacitor C14 and the second end of the fourth resonant circuit module 390; one end of the fifteenth capacitor C15 is respectively connected to the other end of the ninth inductor L9 and the first end of the second filtering unit 362, and the other end of the fifteenth capacitor C15 is grounded.

[0126] Optionally, one end of the fourteenth capacitor C14 is connected to the other end of the seventh capacitor C7, and the other end of the fourteenth capacitor C14 is grounded; one end of the ninth inductor L9 is respectively connected to one end of the fourteenth capacitor C14 and the other end of the seventh capacitor C7, one end of the fifteenth capacitor C15 is respectively connected to the other end of the ninth inductor L9 and the first end of the eighth filter unit 422, and the other end of the fifteenth capacitor C15 is grounded; the second end of the eighth filter unit 422 is connected to the signal transceiver module 340. In this way, through the above structure, the fourth filter module 420 can be formed, which can suppress the frequency band signals of other branches except the branch where the fourth resonant circuit module 390 is located, and is limited to passing the frequency band signal of the current branch where the fourth filter module 420 is located, so as to achieve the effect of frequency division and ensure the quality of the frequency band signal of the current branch demodulated by the signal transceiver module 340.

[0127] The carrier aggregation circuit provided in the embodiment of the present application, through the above structure, eliminates the use of medium and high frequency dividers in the frequency division branch, and by adding partial matching, the frequency division branches are directly connected, and through matching simulation, the function of carrier aggregation can be realized, and the function of simultaneously receiving at least two frequency band signals can be realized. By eliminating the use of medium and high frequency dividers, the area of ​​the circuit board can be reduced, and the material usage of the divider can be reduced, thereby reducing the cost of the circuit, and at the same time, it can reduce the insertion loss and improve the performance of the RF path.

[0128] Optionally, Figure 6 For this application, Figure 5 The insertion loss (insertion loss) simulation results of the carrier aggregation circuit shown are shown in FIG. Figure 1 , where the X-axis is frequency (Freq, unit: GHz) and the Y-axis is insertion loss (unit: dB). Figure 5 Insertion loss between endpoint A and endpoint C; Curve N is Figure 5 Insertion loss between endpoint A and endpoint D; where m1 and m4 are points on curve N, and m2 and m3 are points on curve M.

[0129] Figure 7 For this application, Figure 5The simulation diagram of the Smith chart of the carrier aggregation circuit shown Figure 1 . Among them, curve O is the S11 parameter of endpoint A; curve P is the S11 parameter of endpoint C; curve Q is the S11 parameter of endpoint D.

[0130] Figure 8 For this application, Figure 5 The insertion loss (insertion loss) simulation results of the carrier aggregation circuit shown are shown in FIG. Figure 2 , where the X-axis is frequency (Freq, unit: GHz) and the Y-axis is insertion loss (unit: dB). Figure 5 Insertion loss between endpoint B and endpoint F; Curve I is Figure 5 Insertion loss between endpoint B and endpoint E; Curve K is Figure 5 Insertion loss between end point B and end point G; where m1 and m2 are points on curve H, m3 and m4 are points on curve K, and m5 and m6 are points on curve I.

[0131] Fig. 9 For this application, Figure 5 The simulation diagram of the Smith chart of the carrier aggregation circuit shown Figure 2 . Among them, curve L is the S11 parameter of endpoint B; curve J is the S11 parameter of endpoint F; curve S is the S11 parameter of endpoint E; curve T is the S11 parameter of endpoint G.

[0132] The present application also provides a smart terminal, which includes the above-mentioned carrier aggregation circuit. Through the structure of the above-mentioned carrier aggregation circuit, the use of the frequency divider can be eliminated, thereby reducing the circuit board area of ​​the smart terminal, achieving the effect of reducing the circuit cost, thereby reducing the production cost of the smart terminal. Optionally, the carrier aggregation circuit included in the smart terminal can refer to the above-mentioned explanation of each embodiment of the carrier aggregation circuit, which will not be repeated here.

[0133] The intelligent terminal may be implemented in various forms. For example, the intelligent terminal described in this application may include intelligent terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0134] The following description will be made by taking a mobile terminal as an example, and those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the construction according to the embodiments of the present application can also be applied to fixed-type terminals.

[0135] See also Fig.10 , which is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application, the mobile terminal 500 may include: RF (Radio Frequency) unit 501, WiFi module 502, audio output unit 503, A / V (audio / video) input unit 504, sensor 505, display unit 506, user input unit 507, interface unit 508, memory 509, processor 510, power supply 511 and other components. Those skilled in the art can understand that Fig.10 The structure of the mobile terminal shown in the figure does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0136] Combine the following Fig.10 The following is a detailed introduction to the various components of the mobile terminal:

[0137] The radio frequency unit 501 can be used for receiving and sending signals during information transmission or communication. Specifically, after receiving the downlink information of the base station, it is sent to the processor 510 for processing; in addition, the uplink data is sent to the base station. Usually, the radio frequency unit 501 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. In addition, the radio frequency unit 501 can also communicate with the network and other devices through wireless communication. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile Communications), GPRS (Genera l Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access 2000), etc.

[0138] Divisi on Multiple Access, Wideband Code Division Multiple Access), TD-SCDMA (Time Division Multiple Access),

[0139] Division-Synchronous Code Division Multiple Access (Time Division Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution) and 5G, etc.

[0140] WiFi is a short-range wireless transmission technology. The mobile terminal can help users send and receive emails, browse web pages, and access streaming media through the WiFi module 502. It provides users with wireless broadband Internet access. Fig.10 A WiFi module 502 is shown, but it is understandable that it is not an essential component of the mobile terminal and can be omitted as required without changing the essence of the utility model.

[0141] The audio output unit 503 can convert the audio data received by the RF unit 501 or the WiFi module 502 or stored in the memory 509 into an audio signal and output it as sound when the mobile terminal 500 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, etc. Moreover, the audio output unit 503 can also provide audio output related to a specific function performed by the mobile terminal 500 (for example, a call signal reception sound, a message reception sound, etc.). The audio output unit 503 may include a speaker, a buzzer, etc.

[0142] The A / V input unit 504 is used to receive audio or video signals. The A / V input unit 504 may include a graphics processor (GPU) 5041 and a microphone 5042. The graphics processor 5041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 506. The image frame processed by the graphics processor 5041 can be stored in the memory 509 (or other storage medium) or sent via the radio frequency unit 501 or the WiFi module 502. The microphone 5042 can receive sound (audio data) via the microphone 5042 in the operation modes such as the telephone call mode, the recording mode, the voice recognition mode, etc., and can process such sound into audio data. The processed audio (voice) data can be converted into a format output that can be sent to the mobile communication base station via the radio frequency unit 501 in the case of the telephone call mode. The microphone 5042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the process of receiving and transmitting audio signals.

[0143] The mobile terminal 500 also includes at least one sensor 505, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 5061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 5061 and / or the backlight when the mobile terminal 500 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can also be configured on the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be repeated here.

[0144] The display unit 506 is used to display information input by the user or information provided to the user. The display unit 506 may include a display panel 5061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0145] The user input unit 507 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the mobile terminal. Optionally, the user input unit 507 may include a touch panel 5071 and other input devices 5072. The touch panel 5071, also known as a touch screen, can collect the user's touch operation on or near it (such as the user's operation on the touch panel 5071 or near the touch panel 5071 using any suitable object or accessory such as a finger, stylus, etc.), and drive the corresponding connection device according to a pre-set program. The touch panel 5071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the touch point coordinates, and then sends it to the processor 510, and can receive and execute the command sent by the processor 510. In addition, the touch panel 5071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 5071, the user input unit 507 may also include other input devices 5072. Optionally, the other input devices 5072 may include, but are not limited to, one or more of a physical keyboard, a function key (such as a volume control key, a switch key, etc.), a trackball, a mouse, a joystick, etc., which are not specifically limited here.

[0146] Optionally, the touch panel 5071 may cover the display panel 5061. When the touch panel 5071 detects a touch operation on or near it, it transmits the information to the processor 510 to determine the type of the touch event. Then, the processor 510 provides a corresponding visual output on the display panel 5061 according to the type of the touch event. Fig.10 In the figure, the touch panel 5071 and the display panel 5061 are used as two independent components to realize the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 5071 and the display panel 5061 can be integrated to realize the input and output functions of the mobile terminal, which is not limited here.

[0147] The interface unit 508 serves as an interface through which at least one external device can be connected to the mobile terminal 500. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, etc. The interface unit 508 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 500 or may be used to transmit data between the mobile terminal 500 and an external device.

[0148] The memory 509 can be used to store software programs and various data. The memory 509 can mainly include a program storage area and a data storage area. Optionally, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 509 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0149] The processor 510 is the control center of the mobile terminal. It uses various interfaces and lines to connect various parts of the entire mobile terminal. It executes various functions of the mobile terminal and processes data by running or executing software programs and / or modules stored in the memory 509, and calling data stored in the memory 509, so as to monitor the mobile terminal as a whole. The processor 510 may include one or more processing units; preferably, the processor 510 may integrate an application processor and a modem processor. Optionally, the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 510.

[0150] The mobile terminal 500 may also include a power supply 511 (such as a battery) for supplying power to various components. Preferably, the power supply 511 may be logically connected to the processor 510 via a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system.

[0151] although Fig.10 Not shown, the mobile terminal 500 may also include a Bluetooth module, etc., which will not be described in detail here.

[0152] It is understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0153] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0154] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0155] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0156] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.

[0157] In the present application, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0158] The various technical features of the technical solution of the present application can be arbitrarily combined. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0159] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A carrier aggregation circuit, characterized in that: The circuit comprises: An antenna module, used for receiving signals of multiple frequency bands; A first resonant circuit module, the first resonant circuit module is used to pass a preset frequency band signal corresponding to the first resonant circuit module; a second resonant circuit module, wherein a first end of the second resonant circuit module is connected to a first end of the first resonant circuit module and is connected to the antenna module; the second resonant circuit module is used to pass a preset frequency band signal corresponding to the second resonant circuit module; A signal transceiver module is connected to the second end of the first resonant circuit module and the second end of the second resonant circuit module respectively, and the signal transceiver module is used to demodulate the multiple frequency band signals.

2. The circuit according to claim 1, characterized in that The circuit also includes a multi-way switch module; The first end of the multi-way switch module is connected to the antenna module; The second end of the multi-way switch module is respectively connected to the first end of the first resonant circuit module and the first end of the second resonant circuit module.

3. The circuit according to claim 1, characterized in that The first resonant circuit module includes a first capacitor and a first inductor; Include at least one of the following: One end of the first inductor is connected to the first end of the second resonant circuit module and to the antenna module, and the other end of the first inductor is grounded; One end of the first capacitor is respectively connected to one end of the first inductor and the first end of the second resonant circuit module, and is connected to the antenna module, and the other end of the first capacitor is connected to the signal transceiver module.

4. The circuit according to claim 1, characterized in that The second resonant circuit module includes a third inductor, a third capacitor and a fourth capacitor; Include at least one of the following: One end of the third capacitor is connected to the first end of the first resonant circuit module and is also connected to the antenna module; One end of the third inductor is connected to the other end of the third capacitor, and the other end of the third inductor is grounded; One end of the fourth capacitor is respectively connected to one end of the third inductor and the other end of the third capacitor, and the other end of the fourth capacitor is connected to the signal transceiver module.

5. The circuit according to claim 1, characterized in that The circuit further includes a third resonant circuit module and a fourth resonant circuit module, wherein the third resonant circuit module includes a second capacitor, a second inductor, a fifth capacitor and a fourth inductor; Include at least one of the following: One end of the fourth inductor is connected to the first end of the fourth resonant circuit module and to the antenna module, and the other end of the fourth inductor is grounded; One end of the fifth capacitor is respectively connected to one end of the fourth inductor and the first end of the fourth resonant circuit module, and is connected to the antenna module; One end of the second inductor is connected to the other end of the fifth capacitor, and the other end of the second inductor is grounded; One end of the second capacitor is respectively connected to one end of the second inductor and the other end of the fifth capacitor, and the other end of the second capacitor is connected to the signal transceiver module.

6. The circuit according to claim 5, characterized in that The circuit further includes a third filtering module; the third filtering module includes a fifth filtering unit and a sixth filtering unit; the fifth filtering unit includes a twelfth capacitor, a thirteenth capacitor and an eighth inductor; and includes at least one of the following: One end of the twelfth capacitor is connected to the second end of the third resonant circuit module, and the other end of the twelfth capacitor is grounded; One end of the eighth inductor is respectively connected to one end of the twelfth capacitor and the second end of the third resonant circuit module; One end of the thirteenth capacitor is respectively connected to the other end of the eighth inductor and the first end of the sixth filtering unit, and the other end of the thirteenth capacitor is grounded.

7. The circuit according to any one of claims 1 to 6, characterized in that The circuit also includes a first filtering module and a second filtering module; The first end of the first filtering module is connected to the second end of the first resonant circuit module, and the second end of the first filtering module is connected to the signal transceiver module; and / or, The first end of the second filtering module is connected to the second end of the second resonant circuit module, and the second end of the second filtering module is connected to the signal transceiver module.

8. The circuit according to claim 7, characterized in that The first filtering module includes a first filtering unit and a second filtering unit; The first end of the first filter unit is the first end of the filter module, the second end of the first filter unit is connected to the first end of the second filter unit, and the second end of the second filter unit is the second end of the filter module.

9. The circuit according to claim 8, characterized in that The first filtering unit includes an eighth capacitor, a ninth capacitor and a sixth inductor; and includes at least one of the following: One end of the eighth capacitor is connected to the second end of the first resonant circuit module, and the other end of the eighth capacitor is grounded; One end of the sixth inductor is respectively connected to one end of the eighth capacitor and the second end of the first resonant circuit module; One end of the ninth capacitor is respectively connected to the other end of the sixth inductor and the first end of the second filtering unit, and the other end of the ninth capacitor is grounded.

10. An intelligent terminal, characterized in that: The method comprises the carrier aggregation circuit as claimed in any one of claims 1 to 9.

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