Radio frequency circuit, radio frequency control method, device and electronic equipment

Abstract

The present application discloses a radio frequency circuit, a radio frequency control method, an apparatus, and an electronic device. The radio frequency circuit includes a first radio frequency module, a second radio frequency module, an extractor, and an antenna. The extractor includes a first signal path and a second signal path. The first radio frequency module is connected to the antenna through the first signal path, and the second radio frequency module is connected to the antenna through the second signal path. The first signal path includes a plurality of first frequency adjustment units, each of which includes a first resonator and a first switch connected in parallel. The second signal path includes a plurality of second frequency adjustment units, each of which includes a second resonator and a second switch connected in parallel. The first switch controls the working state of the corresponding first resonator to adjust the bandwidth of the first signal path, and the second switch controls the working state of the corresponding second resonator to adjust the bandwidth of the second signal path.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a radio frequency circuit, a radio frequency control method, a device, and an electronic device. Background Art

[0002] At present, mobile phones support more and more communication frequency band combinations, so the number of mobile phone antennas is also increasing. However, the appearance of mobile phones is developing in the direction of being small and light, which brings great challenges to the design of mobile phone antennas.

[0003] To adapt to the development of communication technologies, more and more manufacturers are turning to co-antenna designs. For example, using a single decimator allows LTE and WiFi networks to be received through the same antenna. However, the WiFi 2.4GHz band (ISM band) and LTE bands like B40 / B41 are very closely spaced, with some frequencies overlapping. This leads to high insertion loss and poor out-of-band rejection in some frequency bands, severely impacting network performance. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a radio frequency circuit, a radio frequency control method, a device, and an electronic device that can solve the problem of poor network performance when an LTE network and a WiFi network share an antenna.

[0005] In a first aspect, an embodiment of the present application provides a radio frequency circuit, the radio frequency circuit including a first radio frequency module, a second radio frequency module, an extractor, and an antenna;

[0006] The extractor includes a first signal path and a second signal path, the first RF module is connected to the antenna via the first signal path, and the second RF module is connected to the antenna via the second signal path;

[0007] The first signal path includes a plurality of first frequency adjustment units, each of which includes a first resonator and a first switch connected in parallel; the second signal path includes a plurality of second frequency adjustment units, each of which includes a second resonator and a second switch connected in parallel;

[0008] The first switch controls the working state of the corresponding first resonator to adjust the bandwidth of the first signal path, and the second switch controls the working state of the corresponding second resonator to adjust the bandwidth of the second signal path.

[0009] In a second aspect, an embodiment of the present application provides an electronic device, which includes the radio frequency circuit as described in the first aspect.

[0010] In a third aspect, an embodiment of the present application provides a radio frequency control method, which is applied to the radio frequency circuit described in the first aspect. The method includes:

[0011] detecting whether the first radio frequency module and the second radio frequency module are coupled to each other;

[0012] When the first RF module and the second RF module are coupled to each other, the working state of the corresponding first resonator is controlled by the first switch to adjust the bandwidth of the first signal path, and the working state of the corresponding second resonator is controlled by the second switch to adjust the bandwidth of the second signal path.

[0013] In a fourth aspect, an embodiment of the present application provides a radio frequency control device, applied to the radio frequency circuit described in the first aspect, the device comprising:

[0014] a detection module, configured to detect whether the first radio frequency module and the second radio frequency module are coupled to each other;

[0015] A control module is configured to control the operating state of the corresponding first resonator through the first switch to adjust the bandwidth of the first signal path, and to control the operating state of the corresponding second resonator through the second switch to adjust the bandwidth of the second signal path when the first RF module and the second RF module are coupled to each other.

[0016] In a fifth aspect, an embodiment of the present application provides an electronic device comprising a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the method described in the third aspect are implemented.

[0017] In a sixth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the third aspect are implemented.

[0018] In the seventh aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the method described in the third aspect.

[0019] In an eighth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium and is executed by at least one processor to implement the method described in the third aspect.

[0020] In an embodiment of the present application, the first RF module is connected to the antenna through a first signal path, and the second RF module is connected to the antenna through a second signal path, and the first signal path includes a plurality of first frequency adjustment units, the first frequency adjustment units including a first resonator and a first switch connected in parallel, and the second signal path includes a plurality of second frequency adjustment units, the second frequency adjustment units including a second resonator and a second switch connected in parallel. At the same time, the working state of the corresponding first resonator can be controlled by the first switch to adjust the bandwidth of the first signal path, and the corresponding second resonator can be controlled by the second switch to adjust the bandwidth of the second signal path. That is, when the second RF module, such as a WIFI network, and the first RF module, such as an LTE network, are coupled to each other, they can control the number of resonator cascades of their respective signal paths through the switch to achieve the purpose of adjustable bandwidth, thereby making the operating frequency of the WIFI network and the operating frequency of the LTE network have a relatively large gap, thereby increasing the isolation between the two, reducing insertion loss, and improving out-of-band suppression capability, providing users with more stable and better network performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of a radio frequency circuit in the prior art;

[0022] Figure 2 It is a signal diagram of a WIFI channel in the prior art;

[0023] Figure 3 It is a signal diagram of an LTE channel in the prior art;

[0024] Figure 4 It is a schematic diagram of the principle of the filter in the prior art;

[0025] Figure 5 is a structural diagram of a radio frequency circuit provided in an embodiment of the present application;

[0026] Figure 6 is a structural diagram of a radio frequency circuit provided by another embodiment of the present application;

[0027] Figure 7 This is a schematic diagram of the Wi-Fi channel spectrum provided in an embodiment of the present application;

[0028] Figure 8 This is a signal diagram of the WIFI channel provided in an embodiment of the present application;

[0029] Figure 9 This is a signal diagram of the LTE channel provided in an embodiment of the present application;

[0030] Figure 10 Schematic diagram of the flow of the radio frequency control method provided in the embodiment of the present application;

[0031] Figure 11 is a flowchart of a radio frequency control method provided by another embodiment of the present application;

[0032] Figure 12 Schematic diagram of the hardware structure of the radio frequency control device provided in the embodiment of the present application;

[0033] Figure 13 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application;

[0034] Figure 14 This is a schematic diagram of the hardware structure of another electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0036] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0037] At present, in order to adapt to the development of communication technology, more and more manufacturers tend to design common antennas, such as Figure 1 As shown in the figure, using a decimator allows LTE and WiFi networks to be received through the same antenna. However, the WiFi 2.4G band (ISM band, 2400Hz-2.84Hz) and the LTE B40 band, such as 2370MHz-2400MHz, are very close together, so some frequencies overlap. For example, the B1 channel (20M bandwidth) of WiFi 2.4G will overlap the high frequency channel of LTE B40. Comparing the specifications of the currently more common decimators (taking the LTE B40 band as an example), combined with Figure 2 The WIFI channels shown and Figure 3 The LTE channel shown is from 2400Hz to 2484Hz, since the WiFi 2.4G frequency band is 2400Hz to 2484Hz. Figure 2As can be seen from the WIFI channel shown, the WIFI channel has very poor suppression on the 2370MHz to 2400MHz range. Figure 3 As can be seen from the LTE channel shown, the insertion loss of LTE channel B40 2370MHz ~ 2400MHz is also very large, seriously affecting the network performance. It is understandable that Figure 2 and Figure 3 The performance of the LTE network is sacrificed to ensure the performance of the WiFi network. That is to say, since the extractor is used to ensure the performance of the entire WiFi 2.4G frequency band of 2400Hz-2484Hz, the frequency of 2400Hz is the same as the 2400MHz of LTE B40, so the performance of the LTE network can only be sacrificed.

[0038] To address the shared antenna design issue for LTE B40 and Wi-Fi 2.4G (this is just one example; similar issues exist for the LTE B41 / B7 and Wi-Fi 2.4G bands), the decimator was improved, changing the current fixed-bandwidth decimator to one that can adjust the channel frequency. The decimator then identifies and processes registered networks, fine-tuning the channel bandwidth to allow the two networks to coexist using the same antenna.

[0039] In order to better understand the implementation of this solution, here is a supplementary explanation of the current design principle of the channel filter. The main process of the filter commonly used in RF is SAW (surface acoustic wave filter), which works by utilizing the piezoelectric effect and acoustic characteristics of piezoelectric materials to convert electrical energy into mechanical energy (sound waves), and then convert mechanical energy into electrical energy. Figure 4 As shown in the figure, an alternating signal is input to the IDT (interdigital transducer) on the left. Due to the inverse piezoelectric effect, the substrate will deform and generate a wave that changes with the signal, namely SAW, which propagates perpendicular to the axis of the IDT electrode on the piezoelectric circuit board. When it reaches the IDT on the right, if the spacing between the SAW and the IDT matches, then an electrical signal can be generated between the electrodes of the IDT.

[0040] Because a single resonator only resonates at a certain frequency, it cannot form a filter. Multiple resonators are cascaded together to form a filter that meets specific requirements. This cascade of resonators allows for the passage and suppression of specific frequencies. The present embodiment achieves adjustable filtering frequency by adding switches to the extractor to control the number of cascaded resonators in different paths.

[0041] The radio frequency circuit provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0042] See Figure 5, which is a schematic diagram of the structure of a radio frequency circuit provided in an embodiment of the present application. The radio frequency circuit 50 includes a first radio frequency module 510, a second radio frequency module 520, an extractor 530, and an antenna 540. The extractor 530 includes a first signal path and a second signal path. The first radio frequency module 510 is connected to the antenna 540 via the first signal path, and the second radio frequency module 520 is connected to the antenna 540 via the second signal path.

[0043] The first signal path includes a plurality of first frequency adjustment units 531, each of which includes a first resonator 5311 and a first switch 5312 connected in parallel. The second signal path includes a plurality of second frequency adjustment units 532, each of which includes a second resonator 5321 and a second switch 5322 connected in parallel.

[0044] The first switch controls the working state of the corresponding first resonator to adjust the bandwidth of the first signal path, and the second switch controls the working state of the corresponding second resonator to adjust the bandwidth of the second signal path.

[0045] In this embodiment, since a single resonator resonates only at a single frequency and cannot form a filter, a filter that meets certain requirements can only be formed by cascading multiple resonators. Here, switches are added to the extractor to control the number and type of resonator cascades in the corresponding signal path, thereby achieving the effect of adjusting the bandwidth of the signal path. Specifically, by connecting a first switch in parallel to each first resonator to control the operating state of the first resonator, the number of cascaded first resonators in the first signal path is changed, making the filter frequency of the first signal path adjustable, thereby achieving the effect of adjusting the bandwidth of the first signal path. Furthermore, by connecting a second switch in parallel to each second resonator to control the operating state of the second resonator, the number of cascaded second resonators in the second signal path is changed, making the filter frequency of the second signal path adjustable, thereby achieving the effect of adjusting the bandwidth of the second signal path.

[0046] In a specific embodiment, referring to Figure 6As shown, a switch is added to each resonator for control to achieve adjustable and controllable channel frequency. Each box Z represents a resonator. The performance of each resonator is not necessarily the same. The parameters of G1 and G2 can be the same or different according to the actual project debugging position. In a specific embodiment, two first frequency adjustment units 531 are connected in series between the antenna 540 and the first RF module 510, and one end of another first frequency adjustment unit 531 is connected between the two first frequency adjustment units 531, and the other end is grounded; two second frequency adjustment units 532 are connected in series between the antenna 540 and the second RF module 520, and one end of another second frequency adjustment unit 532 is connected between the two second frequency adjustment units 532, and the other end is grounded.

[0047] Reference Figure 6 The extractor 530 includes 6 first frequency adjustment units, the first first frequency adjustment unit includes a first resonator G1 and a first switch S1 connected in parallel, the second first frequency adjustment unit includes a first resonator G2 and a first switch S2 connected in parallel, the third first frequency adjustment unit includes a first resonator G3 and a first switch S3 connected in parallel, the fourth first frequency adjustment unit includes a first resonator G4 and a first switch S4 connected in parallel, the fifth first frequency adjustment unit includes a first resonator G5 and a first switch S5 connected in parallel, and the sixth first frequency adjustment unit includes a first resonator G6 and a first switch S6 connected in parallel.

[0048] Reference Figure 6 The extractor 530 includes 7 second frequency adjustment units, the first second frequency adjustment unit includes a second resonator G7 and a second switch S7 connected in parallel, the second second frequency adjustment unit includes a second resonator G8 and a second switch S8 connected in parallel, the third second frequency adjustment unit includes a second resonator G9 and a second switch S9 connected in parallel, the fourth second frequency adjustment unit includes a second resonator G10 and a second switch S10 connected in parallel, the fifth second frequency adjustment unit includes a second resonator G11 and a second switch S11 connected in parallel, the sixth second frequency adjustment unit includes a second resonator G12 and a second switch S12 connected in parallel, and the seventh second frequency adjustment unit includes a second resonator G13 and a second switch S13 connected in parallel.

[0049] In this embodiment, the extractor 530 also includes a control module (not shown in the figure), and the control end of the first switch 5312 and the control end of the second switch 5322 are connected to the control module. The control module can be a power supply, that is, a VDD power supply and a set of switch control lines are added to the extractor 530 (since a large number of internal switches need to be controlled, it is preferred to use MIPI signal lines to control the switches. Of course, if there are few states, GPIO signal lines or other control lines can also be considered). In other words, the power supply is connected to the switch through the switch control line to power the switch and control the switch to be turned on. In actual application, the number of first resonators 5311 enabled by the first switch 5312 is used to adjust the filtering bandwidth of the path where the first RF module 510 is located, that is, the first signal path. Refer to Figure 6 If all S1 to S6 are disconnected, the bandwidth of the first signal path is the largest. If only S1, S2, and S5 are disconnected, the bandwidth of the first signal path is narrowed. Similarly, the second signal path where the second RF module 520 is located is controlled in the same way.

[0050] The first radio frequency module is an LTE module, and the second radio frequency module is a WIFI module.

[0051] Specifically, since the LTE B40 2370MHz-2400MHz and WiFi 2.4G frequency bands overlap and thus couple with each other, when electronic devices operate in the LTE B40 2370MHz-2400MHz and WiFi 2.4G frequency bands, decimator path frequency adjustment is required.

[0052] For example, first, by confirming the WiFi channel, the second switch corresponding to the second resonator of the channel is adjusted. Figure 7 The bandwidth of a normal WiFi channel is about 80MHz. If Figure 6 The extractor shown supports the full WiFi band if the corresponding S7 to S13 are all disconnected. Although WiFi has 13 channels, only one channel will be used for communication after connecting to WiFi, that is, only one channel bandwidth of about 20MHz will be used each time. Here, after determining the channel on which the WiFi module is working, the bandwidth of the second signal path can be shortened to that of one channel by adjusting the second switch of the second resonator of the second signal path. For example, after determining the channel on which the WiFi module is working, the control module controls S8, S9, S12, and S13 to be turned on, and S7, S10, and S11 to be turned off, that is, the second resonators G8, G9, G12, and G13 are controlled to be in working state, and G7, G10, and G11 are controlled to be in non-working state, so as to narrow the frequency of the channel bandwidth of the second signal path to about 20MHz.

[0053] The effect of the adjusted second signal path, namely the WIFI path, is shown in the following figure: Figure 8 As shown, Curve 3 is the theoretical frequency effect of the adjusted Wi-Fi channel. However, it is generally not possible to achieve a straight upward curve. Therefore, Curve 2 has an oblique upward effect, which reduces the insertion loss in the middle and may result in an actual bandwidth of 30M. It is understandable that in actual projects, the switch combination of each resonator for each Wi-Fi channel frequency is pre-determined and the relevant data is stored. After confirming the channel, the corresponding switch enable status can be directly called.

[0054] After adjusting the bandwidth of the WIFI channel, it is also necessary to confirm the LTE channel and adjust the first switch corresponding to the first resonator of the first signal path, that is, the LTE path. As mentioned above, the insertion loss of the B402370MHz to 2400MHz section on the LTE path is very large, which will affect the communication effect. Similarly, according to the actual communication frequency band requirements, the first switch of the LTE path is enabled to adjust the frequency passband to achieve better isolation from the WLAN band. Figure 9 For example, when the network is registered in the LTE B40 2370MHz-2400MHz frequency range, the performance of B41 is sacrificed and the first resonator frequency is adjusted to B40. It is understandable that in actual projects, the corresponding resonator switch combination data needs to be debugged and stored in advance, and then the relevant resonator control switch data is called according to the actual network.

[0055] It is understandable that through the above example, a relatively large gap can be created between the two coexisting frequencies. For example, WiFi uses 2472MHz and LTE B40 uses 2400MHz. In this case, there is a 70M gap between the two, and the isolation can be above 35dB. However, as with current devices, WiFi must always guarantee performance at 2400-2484MHz. Since 2400MHz is the same frequency as B40, only one of them can be sacrificed, and one is destined to be unusable.

[0056] In an embodiment of the present application, the first RF module is connected to the antenna through a first signal path, and the second RF module is connected to the antenna through a second signal path, and the first signal path includes a plurality of first frequency adjustment units, the first frequency adjustment units including a first resonator and a first switch connected in parallel, and the second signal path includes a plurality of second frequency adjustment units, the second frequency adjustment units including a second resonator and a second switch connected in parallel. At the same time, the working state of the corresponding first resonator can be controlled by the first switch to adjust the bandwidth of the first signal path, and the corresponding second resonator can be controlled by the second switch to adjust the bandwidth of the second signal path. That is, when the second RF module, such as a WIFI network, and the first RF module, such as an LTE network, are coupled to each other, they can control the number of resonator cascades of their respective signal paths through the switch to achieve the purpose of adjustable bandwidth, thereby making the operating frequency of the WIFI network and the operating frequency of the LTE network have a relatively large gap, thereby increasing the isolation between the two, reducing insertion loss, and improving out-of-band suppression capability, providing users with more stable and better network performance.

[0057] The present application also provides an electronic device including the radio frequency circuit of the aforementioned embodiment. The electronic device may be a mobile phone, a tablet computer, a laptop computer, a wearable device, or the like.

[0058] In this embodiment, since the electronic device provided in the embodiment of the present application includes any one of the radio frequency circuits provided in the above embodiment section, the electronic device provided in the embodiment of the present application can achieve the same function as any one of the radio frequency circuits provided in the above embodiment section. That is, in the embodiment of the present application, the working state of the corresponding first resonator can be controlled by the first switch to adjust the bandwidth of the first signal path, and the corresponding second resonator can be controlled by the second switch to adjust the bandwidth of the second signal path. That is, when the second radio frequency module, such as a WIFI network, and the first radio frequency module, such as an LTE network, are coupled to each other, they can control the number of resonator cascades of their respective signal paths through the switch to achieve the purpose of adjustable bandwidth, thereby making the operating frequency of the WIFI network and the operating frequency of the LTE network have a relatively large gap, thereby increasing the isolation between the two, reducing insertion loss, and improving out-of-band suppression capability, providing users with more stable and better network performance.

[0059] See Figure 10 , which is a flow chart of a radio frequency control method provided by an embodiment of the present application. This method can be applied to the radio frequency circuit of the aforementioned embodiment, and can also be applied to the electronic device of the aforementioned embodiment. Figure 10 As shown, the method may include steps 1100 to 1200.

[0060] Step 1100: Detect whether the first RF module and the second RF module are coupled to each other.

[0061] The first radio frequency module is an LTE module, and the second radio frequency module is a WIFI module.

[0062] In this embodiment, referring to Figure 11 After the electronic device is turned on, it will first search and register to connect to the network. At the same time, the electronic device will determine whether the connected network has a common antenna design. If not, such as LTE B5 and WIFI 5G, which do not have a common antenna design, the process ends and the electronic device can be used normally. If yes, it is necessary to further determine whether the channel bandwidth of the extractor needs to be adjusted. If the two frequency bands are relatively far apart, such as LTE B1 and WiFi 2.4G, since the two frequencies are relatively far apart, the mutual suppression is sufficient and the insertion loss of each channel is relatively small. In this case, the result of the judgment on whether the extractor should be adjusted is no. If the scenario described above is encountered, such as the LTE B402370MHz~2400MHz and WiFi 2.4G bands, the two frequencies are very close and some frequencies overlap, resulting in large insertion loss in some frequency bands and poor out-of-band suppression, which seriously affects network performance. At this time, the extractor channel frequency needs to be adjusted.

[0063] Step 1200: When the first RF module and the second RF module are coupled to each other, the working state of the corresponding first resonator is controlled by the first switch to adjust the bandwidth of the first signal path, and the working state of the corresponding second resonator is controlled by the second switch to adjust the bandwidth of the second signal path.

[0064] Continuing with the above example, the LTE B40 2370MHz-2400MHz band is very closely isolated from the WiFi 2.4GHz band. This results in high insertion loss and poor out-of-band rejection in some frequency bands, severely impacting network performance. This indicates that the LTE B40 2370MHz-2400MHz and WiFi 2.4GHz bands are coupled, necessitating channel bandwidth adjustment.

[0065] In a specific embodiment, in step 1200, when the first RF module and the second RF module are coupled to each other, controlling the operating state of the corresponding second resonator through the second switch may further include: when the first RF module and the second RF module are coupled to each other, determining a second operating channel of the second RF module; determining a state of the second switch based on the second channel and set second mapping data; wherein the second mapping data reflects a mapping relationship between different channels of the second RF module and the state of the second switch; and when the second switch is in the on state, controlling the corresponding second resonator to be in an operating state.

[0066] The second mapping data can be data obtained by debugging in advance based on the actual project. It is understandable that the switch combination of each resonator for each WiFi channel frequency in the actual project will be debugged in advance and the relevant data will be stored. After confirming the channel, the enable state of the corresponding switch can be directly called.

[0067] For example, first, by confirming the WiFi channel, the second switch corresponding to the second resonator of the channel is adjusted. Figure 7 The bandwidth of a normal WiFi channel is about 80MHz. If Figure 6 The extractor shown supports the full WiFi band if the corresponding S7 to S13 are all disconnected. Although WiFi has 13 channels, only one channel will be used for communication after connecting to WiFi, that is, only one channel bandwidth of about 20MHz will be used each time. Here, after determining the channel on which the WiFi module is working, the bandwidth of the second signal path can be shortened to that of one channel by adjusting the second switch of the second resonator of the second signal path. For example, after determining the channel on which the WiFi module is working, the control module determines that S8, S9, S12, and S13 need to be turned on and S7, S10, and S11 need to be disconnected based on the working channel and the second mapping data, that is, the second resonators G8, G9, G12, and G13 are controlled to be in working state and G7, G10, and G11 are controlled to be in non-working state, so as to narrow the frequency of the channel bandwidth of the second signal path to about 20MHz.

[0068] In a specific embodiment, in step 1200, when the first RF module and the second RF module are coupled to each other, controlling the working state of the corresponding first resonator through the first switch may further include: when the first RF module and the second RF module are coupled to each other, determining the first channel in which the first RF module operates; determining the state of the first switch according to the first channel and set first mapping data; wherein the first mapping data reflects the mapping relationship between different channels of the first RF module and the state of the first switch; when the first switch is in the on state, controlling the corresponding first resonator to be in the working state.

[0069] The first mapping data can also be obtained by debugging in advance according to the actual project. It is understandable that the switch combination of each resonator for each LTE channel frequency in the actual project will be debugged in advance and the relevant data will be stored. After confirming the channel, the enable state of the corresponding switch can be directly called.

[0070] For example, after adjusting the bandwidth of the WIFI channel, it is also necessary to confirm the LTE channel and adjust the first switch corresponding to the first resonator of the first signal path, i.e., the LTE path, based on the first mapping data, to achieve bandwidth adjustment of the LTE path. As mentioned above, the insertion loss of the B40 2370MHz to 2400MHz section on the LTE path is very large, which will affect the communication effect. Similarly, the first switch of the LTE path is enabled and adjusted according to the actual communication frequency band requirements to achieve frequency passband adjustment, so that it has better isolation from the WLAN band. Figure 9 For example, when the network is registered in the LTE B402370MHz~2400MHz frequency range, the performance of B41 is sacrificed and the frequency of the first resonator is adjusted to B40.

[0071] It is understandable that through the above example, a relatively large gap can be created between the two coexisting frequencies. For example, WiFi uses 2472MHz and LTE B40 uses 2400MHz. In this case, there is a 70M gap between the two, and the isolation can be above 35dB. However, as with current devices, WiFi must always guarantee performance at 2400-2484MHz. Since 2400MHz is the same frequency as B40, only one of them can be sacrificed, and one is destined to be unusable.

[0072] In an embodiment of the present application, the operating state of the corresponding first resonator can be controlled by the first switch to adjust the bandwidth of the first signal path, and the corresponding second resonator can be controlled by the second switch to adjust the bandwidth of the second signal path. That is, when the second RF module, such as a WIFI network, and the first RF module, such as an LTE network, are coupled to each other, the number of resonators in the cascade of their respective signal paths can be controlled by the switch to achieve the purpose of adjustable bandwidth, thereby creating a relatively large gap between the operating frequency of the WIFI network and the operating frequency of the LTE network, increasing the isolation between the two, reducing insertion loss, and improving out-of-band suppression capability, providing users with more stable and better network performance.

[0073] The RF control method provided in the embodiment of the present application can be executed by a RF control device. In the embodiment of the present application, the RF control device provided in the embodiment of the present application is described by taking the method of the RF control device executing the control of the electronic device as an example.

[0074] See Figure 12 , which is a hardware structure diagram of a radio frequency control device provided in an embodiment of the present application. The radio frequency control device is applied to the radio frequency circuit of the above embodiment. Figure 12 As shown, the radio frequency control device 1100 includes a detection module 1101 and a control module 1102 .

[0075] A detection module 1101 is configured to detect whether the first RF module and the second RF module are coupled to each other;

[0076] The control module 1102 is configured to control the operating state of the corresponding first resonator through the first switch to adjust the bandwidth of the first signal path, and to control the operating state of the corresponding second resonator through the second switch to adjust the bandwidth of the second signal path when the first RF module and the second RF module are coupled to each other.

[0077] In some embodiments, the control module 1102 is specifically used to determine the first operating channel of the first RF module when the first RF module and the second RF module are coupled to each other; determine the state of the first switch based on the first channel and set first mapping data; wherein the first mapping data reflects the mapping relationship between different channels of the first RF module and the state of the first switch; when the first switch is in the on state, control the corresponding first resonator to be in an operating state.

[0078] In some embodiments, the control module 1102 is specifically configured to determine, when the first RF module and the second RF module are coupled to each other, a second operating channel of the second RF module; determine a state of the second switch based on the second channel and set second mapping data; wherein the second mapping data reflects a mapping relationship between different channels of the second RF module and the state of the second switch; and when the second switch is in the on state, control the corresponding second resonator to be in an operating state.

[0079] In an embodiment of the present application, the operating state of the corresponding first resonator can be controlled by the first switch to adjust the bandwidth of the first signal path, and the corresponding second resonator can be controlled by the second switch to adjust the bandwidth of the second signal path. That is, when the second RF module, such as a WIFI network, and the first RF module, such as an LTE network, are coupled to each other, the number of resonators in the cascade of their respective signal paths can be controlled by the switch to achieve the purpose of adjustable bandwidth, thereby creating a relatively large gap between the operating frequency of the WIFI network and the operating frequency of the LTE network, increasing the isolation between the two, reducing insertion loss, and improving out-of-band suppression capability, providing users with more stable and better network performance.

[0080] The radio frequency control device in the embodiment of the present application can be an electronic device or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices other than a terminal. For example, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), etc. It can also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an ATM or a self-service machine, etc., and the embodiment of the present application does not specifically limit it.

[0081] The radio frequency control device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0082] The radio frequency control device provided in the embodiment of the present application can achieve Figure 10 To avoid repetition, the various processes implemented in the method embodiment are not described here.

[0083] Alternatively, as Figure 13 As shown, an embodiment of the present application further provides an electronic device 1300, including a processor 1301 and a memory 1302, wherein the memory 1302 stores a program or instruction that can be run on the processor 1301. When the program or instruction is executed by the processor 1301, the various steps of the above-mentioned radio frequency control method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0084] Figure 14 A schematic diagram of the hardware structure of an electronic device implementing an embodiment of the present application.

[0085] The electronic device 1200 includes but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210.

[0086] Those skilled in the art will understand that the electronic device 1200 may also include a power source (such as a battery) to power each component, and the power source may be logically connected to the processor 1210 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 14 The electronic device structure shown in the figure does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0087] The processor 1210 is configured to detect whether the first RF module and the second RF module are coupled to each other; when the first RF module and the second RF module are coupled to each other, control the operating state of the corresponding first resonator through the first switch to adjust the bandwidth of the first signal path, and control the operating state of the corresponding second resonator through the second switch to adjust the bandwidth of the second signal path.

[0088] Optionally, the processor 1210 is used to determine the first operating channel of the first RF module when the first RF module and the second RF module are coupled to each other; determine the state of the first switch based on the first channel and the set first mapping data; wherein the first mapping data reflects the mapping relationship between different channels of the first RF module and the state of the first switch; when the first switch is in the on state, control the corresponding first resonator to be in an operating state.

[0089] Optionally, the processor 1210 is used to determine the second channel in which the second RF module operates when the first RF module and the second RF module are coupled to each other; determine the state of the second switch based on the second channel and the set second mapping data; wherein the second mapping data reflects the mapping relationship between different channels of the second RF module and the state of the second switch; when the second switch is in the on state, control the corresponding second resonator to be in an operating state.

[0090] In an embodiment of the present application, the operating state of the corresponding first resonator can be controlled by the first switch to adjust the bandwidth of the first signal path, and the corresponding second resonator can be controlled by the second switch to adjust the bandwidth of the second signal path. That is, when the second RF module, such as a WIFI network, and the first RF module, such as an LTE network, are coupled to each other, the number of resonators in the cascade of their respective signal paths can be controlled by the switch to achieve the purpose of adjustable bandwidth, thereby creating a relatively large gap between the operating frequency of the WIFI network and the operating frequency of the LTE network, increasing the isolation between the two, reducing insertion loss, and improving out-of-band suppression capability, providing users with more stable and better network performance.

[0091] It should be understood that in an embodiment of the present application, the input unit 1204 may include a graphics processing unit (GPU) 12041 and a microphone 12042, and the graphics processor 12041 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 display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1207 includes a touch panel 12071 and at least one of other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include two parts: a touch detection device and a touch controller. Other input devices 21072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0092] The memory 1209 can be used to store software programs and various data. The memory 1209 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1209 may include a volatile memory or a non-volatile memory, or the memory 1209 may include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1209 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0093] Processor 1210 may include one or more processing units. Optionally, processor 1210 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1210.

[0094] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by the processor, the various processes of the above-mentioned radio frequency control method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0095] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0096] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned radio frequency control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0097] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0098] An embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the various processes of the above-mentioned radio frequency control method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0099] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also 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 statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0100] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0101] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A radio frequency circuit, characterized in that: The radio frequency circuit includes a first radio frequency module, a second radio frequency module, an extractor, and an antenna; The extractor includes a first signal path and a second signal path, the first RF module is connected to the antenna via the first signal path, and the second RF module is connected to the antenna via the second signal path; The first signal path includes a plurality of first frequency adjustment units, each of which includes a first resonator and a first switch connected in parallel; the second signal path includes a plurality of second frequency adjustment units, each of which includes a second resonator and a second switch connected in parallel; In which, when the first RF module and the second RF module are coupled with each other, the working state of the corresponding first resonator is controlled by the first switch, thereby changing the cascade number of first resonators in the first signal path to adjust the bandwidth of the first signal path, and the working state of the corresponding second resonator is controlled by the second switch, thereby changing the cascade number of second resonators in the second signal path to adjust the bandwidth of the second signal path.

2. The radio frequency circuit according to claim 1, wherein: Two first frequency adjustment units are connected in series between the antenna and the first radio frequency module, and one end of another first frequency adjustment unit is connected between the two first frequency adjustment units and the other end is grounded; Two second frequency adjustment units are connected in series between the antenna and the second radio frequency module. One end of another second frequency adjustment unit is connected between the two second frequency adjustment units, and the other end is grounded.

3. The radio frequency circuit according to claim 1, wherein: The extractor further includes a control module, and the control end of the first switch and the control end of the second switch are connected to the control module.

4. An electronic device, characterized in that: The electronic device comprises the radio frequency circuit according to any one of claims 1 to 3.

5. A radio frequency control method, applied to the radio frequency circuit according to any one of claims 1 to 3, characterized in that: The method comprises: detecting whether the first radio frequency module and the second radio frequency module are coupled to each other; When the first RF module and the second RF module are coupled to each other, the working state of the corresponding first resonator is controlled by the first switch, thereby changing the cascade number of first resonators in the first signal path to adjust the bandwidth of the first signal path, and the working state of the corresponding second resonator is controlled by the second switch, thereby changing the cascade number of second resonators in the second signal path to adjust the bandwidth of the second signal path.

6. The method according to claim 5, characterized in that When the first RF module and the second RF module are coupled to each other, controlling the working state of the corresponding first resonator by the first switch includes: When the first radio frequency module and the second radio frequency module are coupled to each other, determining a first operating channel of the first radio frequency module; Determining a state of the first switch according to the first channel and set first mapping data; wherein the first mapping data reflects a mapping relationship between different channels of the first RF module and the state of the first switch; When the first switch is in the on state, the corresponding first resonator is controlled to be in the working state.

7. The method according to claim 5, characterized in that When the first RF module and the second RF module are coupled to each other, controlling the working state of the corresponding second resonator by the second switch includes: When the first radio frequency module and the second radio frequency module are coupled to each other, determining a second operating channel of the second radio frequency module; Determining a state of the second switch according to the second channel and set second mapping data; wherein the second mapping data reflects a mapping relationship between different channels of the second RF module and the state of the second switch; When the second switch is in the on state, the corresponding second resonator is controlled to be in the working state.

8. A radio frequency control device, applied to the radio frequency circuit according to any one of claims 1 to 3, characterized in that: include: a detection module, configured to detect whether the first radio frequency module and the second radio frequency module are coupled to each other; A control module is configured to control the operating state of the corresponding first resonator through the first switch when the first RF module and the second RF module are coupled to each other, thereby changing the cascade number of first resonators in the first signal path to adjust the bandwidth of the first signal path, and to control the operating state of the corresponding second resonator through the second switch to thereby change the cascade number of second resonators in the second signal path to adjust the bandwidth of the second signal path.

9. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the radio frequency control method according to any one of claims 5 to 7 are implemented.

10. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the radio frequency control method according to any one of claims 5 to 7 are implemented.

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