A radio frequency compatible circuit and electronic device

Abstract

The embodiment of the application discloses a radio frequency compatible circuit and electronic equipment, comprising an antenna receiving module, a path selection module, a first filtering module and a receiving amplifier module, the path selection module comprises a first selection switch and at least one combined path, each combined path in the at least one combined path comprises a resistor-capacitor-inductor device, and the first selection switch is connected in parallel with each combined path. The scheme uses the combined path comprising the resistor-capacitor-inductor device and the first selection switch in parallel, which not only can meet the needs of various frequency bands in different countries, but also can reduce the occupation of the space area of the swing piece.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency technology, specifically to a radio frequency compatible circuit and electronic device. Background Technology

[0002] In the field of wireless communication, different countries or regions have different frequency band requirements. In order to be compatible with the different frequency band requirements of multiple countries, compatible circuits are generally designed to accommodate multiple performance characteristics in order to meet the requirements.

[0003] In related technologies, some compatible circuits meet the needs of different frequency bands in different countries by being compatible with a variety of different devices, but they have the problem of occupying a large area of ​​space. Utility Model Content

[0004] This application discloses a radio frequency compatible circuit and electronic device. By using a circuit path including resistive, capacitive, and inductive devices connected in parallel with a first selection switch, it can not only meet the requirements of multiple frequency bands in different countries, but also reduce the space occupied by the display.

[0005] The first aspect of this application discloses a radio frequency compatible circuit, which includes an antenna receiving module, a path selection module, a first filtering module, and a receiving amplifier module. The path selection module includes a first selection switch and at least one combining path. Each of the at least one combining path includes a resistor-capacitor-inductor device. The first selection switch is connected in parallel with each combining path. One end of the path selection module is connected to the antenna receiving module, and the other end of the path selection module is connected to the first filtering module. The first filtering module is also connected to the receiving amplifier module, wherein: The antenna receiving module is used to receive antenna signals; The path selection module is used to output a first antenna signal when the first selection switch is in the working state. The first antenna signal includes any one of the frequency band signals of high frequency signal, intermediate frequency signal or low frequency signal in the antenna signal. The path selection module is also used to output a second antenna signal when the combining path is in the working state. The second antenna signal includes a combination signal of any two frequency bands of the antenna signal, namely high frequency signal, intermediate frequency signal or low frequency signal. The first filtering module is used to filter the obtained first antenna signal or second antenna signal; The receiving amplifier module is used to amplify the filtered first antenna signal or the second antenna signal.

[0006] As an optional implementation, in a first aspect of this embodiment, the merging path includes a first merging branch and a second merging branch. One end of the first merging branch is connected to the stationary contact of the first selector switch, and the other end of the first merging branch is connected to the first moving contact of the first selector switch. One end of the second merging branch is connected to the stationary contact of the first selector switch, and the other end of the second merging branch is connected to the second moving contact of the first selector switch. The first combiner branch is used to output a first sub-antenna signal when the combiner path is in operation. The first sub-antenna signal includes a frequency band signal from the second antenna signal.

[0007] The second combiner branch is used to output a second sub-antenna signal when the combiner path is in operation. The second sub-antenna signal includes another frequency band signal in the second sub-antenna signal.

[0008] As an optional implementation, in a first aspect of this embodiment, the first combining branch includes a first capacitor, a first inductor, and a second capacitor. One end of the first capacitor is connected to the stationary contact of the first selector switch, the other end of the first capacitor is connected to one end of the second capacitor and one end of the first inductor, the other end of the second capacitor is connected to the first moving contact of the first selector switch, and the other end of the first inductor is connected to the ground terminal. The first combining branch is used to output the intermediate frequency signal or high frequency signal from the second antenna signal when the combining path is in operation.

[0009] As an optional implementation, in a first aspect of this embodiment, the path selection module includes a first resistor and a second resistor. The stationary contact of the first selector switch is connected to the first capacitor via the first resistor, and the first moving contact of the first selector switch is connected to the second capacitor via the second resistor, wherein: The first resistor and the second resistor are used to protect the first selector switch when the first selector switch is in the working state.

[0010] As an optional implementation, in a first aspect of this embodiment, the path selection module includes a first common pad and a second common pad. The first resistor and the first capacitor share the first common pad, and the second resistor and the second capacitor share the second common pad.

[0011] As an optional implementation, in the first aspect of this embodiment, the second combining branch includes a second inductor, a third capacitor, and a third inductor. One end of the second inductor is connected to the stationary contact of the first selection switch, the other end of the second inductor is connected to one end of the third inductor and one end of the third capacitor, the other end of the third inductor is connected to the second moving contact of the first selection switch, and the other end of the third capacitor is connected to the ground terminal. The second combiner branch is used to output the low-frequency signal from the second antenna signal when the combiner path is in operation.

[0012] As an optional implementation, in the first aspect of this embodiment, the path selection module further includes a third resistor and a fourth resistor. The stationary contact of the first selector switch is connected to the second inductor through the third resistor, and the second moving contact of the first selector switch is connected to the third inductor through the fourth resistor; The third resistor and the fourth resistor are used to protect the first selector switch when the first selector switch is in the working state.

[0013] As an optional implementation, in a first aspect of this embodiment, the path selection module includes a third common pad, which is shared by the fourth resistor and the third inductor.

[0014] As an optional implementation, in a first aspect of this embodiment, the RF compatible circuit includes a second filtering module, and the antenna receiving module includes a second selection switch. The second selection switch is connected to both the second filtering module and the path selection module. The second filtering module is connected to the receiving amplifier module. The path selection module is connected to the first filtering module. The first filtering module is also connected to the receiving amplifier module. Wherein: The second selection switch is used to receive antenna signals; The second filtering module is used to filter the antenna signal and output a third antenna signal, which is different from the first antenna signal and the second antenna signal. The receiving amplifier module is used to amplify the signal from the third antenna.

[0015] The first aspect of this application discloses an electronic device including any of the radio frequency compatible circuits described above.

[0016] Compared with related technologies, the embodiments of this application have at least the following beneficial effects: An embodiment of this application discloses a radio frequency compatible circuit including an antenna receiving module, a path selection module, a first filtering module, and a receiving amplifier module. The path selection module includes a first selection switch and at least one combining path. Each combining path includes a resistor-capacitor-inductor device. The first selection switch is connected in parallel with each combining path. When the first selection switch is in the working state, the path selection module outputs a first antenna signal including any one of the following frequency bands: high-frequency signal, intermediate-frequency signal, or low-frequency signal. When the combining path is in the working state, the output second antenna signal includes a combination signal of any two of the following frequency bands: high-frequency signal, intermediate-frequency signal, or low-frequency signal. In this design, a path selection module is designed, which includes a first selection switch and at least one combining path. The first selection switch and each of the at least one combining path are connected in parallel, indicating that the first selection switch and each of the at least one combining path do not work simultaneously. When the first selection switch is working, the output first antenna signal is any one of a high-frequency signal, an intermediate-frequency signal, or a low-frequency signal. When the combining path is working, the output second antenna signal is a combination of any two of the high-frequency signal, intermediate-frequency signal, or low-frequency signal. Through the first selection switch and at least one combining path, multiple selectable channels are provided for different signal frequency bands. Furthermore, since the combining path is composed of resistive, capacitive, and inductive devices, compared with a combiner chip, it can not only reduce costs but also reduce the space occupied by the component design. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic structural diagram of a power consumption control circuit provided in an embodiment of this application; Figure 2 A schematic structural diagram of another power consumption control circuit provided in an embodiment of this application; Figure 3 A schematic structural diagram of another power consumption control circuit provided in an embodiment of this application; Figure 4 A schematic structural diagram of another power consumption control circuit provided in an embodiment of this application; Figure 5 A schematic structural diagram of another power consumption control circuit provided in an embodiment of this application; Figure 6A schematic structural diagram of another power consumption control circuit provided in an embodiment of this application; Figure 7 A schematic structural diagram of another power consumption control circuit provided in an embodiment of this application; Figure 8 A schematic structural diagram of another power consumption control circuit provided in an embodiment of this application; Figure 9 This is a schematic structural diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that the terms "first, second, third" used in the embodiments of this application are used to distinguish similar or different objects and do not represent a specific order of objects. It can be understood that "first, second, third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0021] It should be noted that the terms "comprising" and "having," and any variations thereof, in the embodiments and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0022] In the field of wireless communication, different countries or regions have significantly different requirements for frequency band allocation and usage due to policies, standards, and historical reasons. For example, North America may prioritize supporting specific frequency bands below 6 GHz, while European or Asian countries may need to be compatible with higher-frequency millimeter waves or low-frequency bands. This diversity requires communication electronic devices to have multi-band compatibility capabilities, and the core challenge in achieving this goal lies in the design of radio frequency front-end circuits. To be compatible with the different frequency band requirements of various countries, compatible circuits are generally designed to accommodate multiple performance characteristics to meet the needs.

[0023] In related technologies, some compatible circuits meet the needs of different frequency bands in different countries by being compatible with a variety of different devices, but they have the problem of occupying a large area of ​​space.

[0024] To address the issue of large space requirements for compatible circuits in design, this application discloses a radio frequency compatible circuit and electronic device. By using a combination path including resistors, capacitors, and inductors connected in parallel with a first selection switch, it can not only meet the requirements of multiple frequency bands in different countries but also reduce the space required for placement.

[0025] The radio frequency compatible circuits provided in this application will be described in detail below with reference to the accompanying drawings and embodiments, so as to make the purpose and technical solution of this application clearer and more intuitive. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0026] The power consumption control circuit disclosed in this application can be applied to a variety of electronic devices. These electronic devices can include power adapters, chargers, desktop computers, laptops, home appliances, audio equipment, power tools, and in-vehicle devices, etc., without specific limitations. Home appliances include televisions, air conditioners, refrigerators, microwave ovens, rice cookers, and vacuum cleaners, etc., without specific limitations. Power tools include electric drills and electric saws, etc., without specific limitations. In-vehicle devices include car navigation systems, car chargers, etc., without specific limitations.

[0027] For ease of understanding, this application uses a mobile phone as an example for illustration in the embodiments. However, it should be understood that the electronic device in this application is not limited to this, and may also be other electronic devices such as laptops.

[0028] Please see Figure 1 , Figure 1 This is a schematic structural diagram of a radio frequency compatible circuit disclosed in an embodiment of this application, including an antenna receiving module 11, a path selection module 12, a first filtering module 13, and a receiving amplifier module 14. One end of the path selection module 12 is connected to the antenna receiving module 11, and the other end of the path selection module 12 is connected to the first filtering module 13. The first filtering module 13 is also connected to the receiving amplifier module. The path selection module 12 includes a first selection switch 121 and at least one combining path 120. Each combining path 122 in the at least one combining path 120 includes a resistor-capacitor-inductor device (not shown in the figure). The first selection switch 121 is connected in parallel with each combining path 122.

[0029] Antenna receiving module 11 is used to receive antenna signals; The path selection module 12 is used to output a first antenna signal when the first selection switch 121 is in the working state. The first antenna signal includes any one of the frequency band signals of high frequency signal, intermediate frequency signal or low frequency signal in the antenna signal. The path selection module 12 is also used to output a second antenna signal when the combining path 122 is in the working state. The second antenna signal includes a combination signal of any two frequency bands of the antenna signal, such as high frequency signal, intermediate frequency signal or low frequency signal. The first filtering module 13 is used to filter the obtained first antenna signal or second antenna signal; The receiver amplifier module is used to amplify the filtered first antenna signal or the second antenna signal.

[0030] This RF-compatible circuit is connected to the antenna and acquires antenna signals of different frequency bands through the operation of its internal modules. The acquired antenna signals of different frequency bands are then amplified so that electronic devices including the RF-compatible circuit can meet the needs of various signal frequency bands in different countries.

[0031] In some embodiments, the electrical connections between the modules in this RF-compatible circuit can be implemented in various ways to achieve the transmission of antenna signals of different frequency bands between different modules. For example, the transmission of antenna signals of different frequency bands between different modules can be achieved by connecting them with metal wires (such as aluminum or copper wires). Another example is that the modules can be integrated on a printed circuit board (PCB) for connection via copper traces. Yet another example is that metallized thin film materials can be used to achieve conductive connections in bends or confined spaces. No specific limitations are imposed here.

[0032] The antenna receiving module 11 is mainly used in electronic devices to connect with the antenna and receive antenna signals propagating in space. It can be understood that the antenna signal is an electromagnetic wave signal with various frequencies. According to the frequency of the antenna signal, it can be divided into high-frequency signals, intermediate-frequency signals, or low-frequency signals.

[0033] In some embodiments, the high-frequency signal can be an electromagnetic signal with a frequency range of 2300-2700MHz, the intermediate-frequency signal can be an electromagnetic signal with a frequency range of 1500-2200MHz, and the low-frequency signal can be an electromagnetic signal with a frequency range of 700-1000MHz. It is understood that there can be many ways to divide the frequency ranges of the high-frequency signal, the intermediate-frequency signal, and the low-frequency signal; the above division is merely an example and is not limited thereto.

[0034] To enable electronic devices to adapt to the selection of antenna signals from various frequency bands in different countries, in some embodiments, the antenna receiving module 11 may include a second selection switch. This second selection switch, based on the function of the control chip in the electronic device, will connect to the channel corresponding to a specific frequency signal received, thereby allowing the electronic device to receive that specific frequency antenna signal.

[0035] In some embodiments, the selection switch may be a relay switch, a solid-state relay, a photoelectric switch, a magnetic switch, a capacitive switch, a digital switch, etc., and no specific limitation is made here.

[0036] Optionally, the second selection switch can also be a single-pole multi-throw switch 82. Preferably, the second selection switch can be a single-pole eight-throw switch. By using the single-pole eight-throw switch, it can be connected to eight different frequency band channels. When the electronic device is located in different countries or regions, the reception of eight different frequency band signals can be achieved by controlling the single-pole eight-throw switch to meet the antenna signal frequency band requirements of different countries or regions.

[0037] The antenna receiving module 11 is connected to the path selection module 12. It mainly uses the control chip in the electronic device to control the path selection module 12 to select different frequency band channels according to the different countries or regions where the electronic device is located, so that the electronic device can work normally in countries or regions with different antenna frequency band requirements, thereby improving the applicability of the electronic device.

[0038] In this embodiment of the application, the path selection module 12 includes a first selection switch 121 and at least one combining path 122. Each combining path 122 includes a resistor-capacitor-inductor device, and the first selection switch 121 is connected in parallel with each combining path 122.

[0039] When the first selection switch 121 in the path selection module 12 is in the working state, the first antenna signal that the first selection switch 121 can output includes any one of the following frequency bands: high-frequency signal, intermediate-frequency signal, or low-frequency signal. That is, when the output of a frequency band signal of one of the three frequency bands is required, the electronic device can control the corresponding channel of the multiple selection channels of the first selection switch 121 to be turned on, so that the first selection switch 121 can output the corresponding frequency band signal.

[0040] Optionally, the first selection switch 121 may be a single-pole double-throw switch.

[0041] In some embodiments, the first selection switch 121 may also be a relay switch, solid-state relay, photoelectric switch, magnetic switch, capacitive switch, digital switch, etc., without specific limitations.

[0042] When the combining path 122 in the path selection module 12 is in working condition, the output second antenna signal includes a combination of any two frequency band signals from the antenna signal, such as high frequency signal, intermediate frequency signal, or low frequency signal; that is, when it is necessary to output a combination of any two frequency band signals from the antenna signal, such as high frequency signal, intermediate frequency signal, or low frequency signal, the electronic device can control the combining path 122 to be turned on, so that the combining path 122 can output the corresponding combination of any two frequency band signals.

[0043] The combination of any two frequency band signals includes the combination of high-frequency signals and low-frequency signals, the combination of high-frequency signals and intermediate-frequency signals, and the combination of intermediate-frequency signals and low-frequency signals.

[0044] Each of the at least one combining path 122 is connected in parallel with the first switch. It is understood that there can be one, two, or multiple combining paths 122; no specific limitation is made here, and the choice can be made according to the actual situation. Furthermore, the combining path 122 can output a combined signal of two different frequency bands, while the first selection switch 121 can output one of multiple different frequency bands. Therefore, the path selection module 12 integrates the selection and output of two different forms of signals; that is, it can output not only a single frequency band signal but also a combination of multiple frequency band signals. This enables electronic devices including this RF-compatible circuit to meet the frequency band selection requirements of different countries or regions.

[0045] In some embodiments, the antenna signal can be divided into extremely low frequency (ULF), lower frequency (LF), intermediate frequency (IF), higher frequency (QF), high frequency (HF), or extremely high frequency (UHF) signals based on frequency magnitude. It is understood that both ULF and LF signals can be subdivided into the aforementioned low frequency signal categories, and vice versa. This classification is merely an example and not a limitation. Therefore, when there are multiple combining paths 122, any three combinations of the six different frequency band signals can be output, or any four combinations of the six different frequency band signals can be output, or any five combinations of the six different frequency band signals can be output, etc. No specific limitations are imposed here; the appropriate combination can be selected based on the actual situation.

[0046] It is understandable that, since the frequency band division can be set according to requirements, the frequency of the lower frequency signal in the above embodiment, which is divided into six different frequency bands (extremely low frequency signal, lower frequency signal, intermediate frequency signal, higher frequency signal, high frequency signal, or extremely high frequency signal), may sometimes fall into the range of other intermediate frequency signals or high frequency signals. Similarly, the high frequency signal may sometimes fall into the range of other low frequency signals or intermediate frequency signals, and the other frequency band divisions are also based on the same principle, which will not be elaborated further here.

[0047] Optionally, the frequencies of the various frequency bands divided according to frequency magnitude can be continuous or discontinuous.

[0048] In this embodiment, the combining path 122 is composed of resistive, capacitive, and inductive devices. Compared to a combiner chip, this not only reduces costs but also decreases the space occupied by the component design. It can be understood that these resistive, capacitive, and inductive devices refer to resistors, capacitors, or inductors.

[0049] In some embodiments, please refer to Figure 2 , Figure 2 This is a schematic structural diagram of another radio frequency compatible circuit disclosed in an embodiment of this application. In this structural diagram, the combining path 122 may include a first combining branch 21 and a second combining branch 22. One end of the first combining branch 21 is connected to the stationary contact of the first selector switch 121, and the other end of the first combining branch 21 is connected to the first moving contact of the first selector switch 121. One end of the second combining branch 22 is connected to the stationary contact of the first selector switch 121, and the other end of the second combining branch 22 is connected to the second moving contact of the first selector switch 121. The first combiner branch 21 is used to output a first sub-antenna signal when the combiner path 122 is in operation. The first sub-antenna signal includes a frequency band signal from the second antenna signal. It can be understood that the first sub-antenna signal can be a frequency band signal from high frequency, intermediate frequency, or low frequency.

[0050] The second combiner branch 22 is used to output a second sub-antenna signal when the combiner path 122 is in operation. The second sub-antenna signal includes a signal in another frequency band. It can be understood that the second sub-antenna signal can be a high-frequency signal, an intermediate-frequency signal, or a low-frequency signal in a different frequency band than the first sub-antenna signal.

[0051] In this embodiment, the combining path 122 is composed of resistive, capacitive, and inductive devices. That is, the combining path 122 is composed of resistors, capacitors, or inductors. Therefore, it can be understood that when the first combining branch 21 outputs a high-frequency signal, the first combining branch 21 is a high-pass filter composed of resistors, capacitors, or inductors capable of filtering and acquiring high-frequency signals. When the first combining branch 21 outputs an intermediate-frequency signal, the first combining branch 21 is a band-pass filter composed of resistors, capacitors, or inductors capable of filtering and acquiring intermediate-frequency signals. When the first combining branch 21 outputs a low-frequency signal, the first combining branch 21 is a low-pass filter composed of resistors, capacitors, or inductors capable of filtering and acquiring low-frequency signals.

[0052] In some embodiments, when the first combining branch 21 outputs signals located in different frequency bands of a frequency band signal, the first combining branch 21 can be a band-stop filter composed of resistors, capacitors or inductors that can suppress the passage of signals in a certain frequency band while allowing other signals to pass.

[0053] Similarly, when the output of the second combining branch 22 is a high-frequency signal, the second combining branch 22 is a high-pass filter composed of resistors, capacitors, or inductors capable of filtering and acquiring high-frequency signals. When the output of the second combining branch 22 is an intermediate-frequency signal, the second combining branch 22 is a band-pass filter composed of resistors, capacitors, or inductors capable of filtering and acquiring intermediate-frequency signals. When the output of the second combining branch 22 is a low-frequency signal, the second combining branch 22 is a low-pass filter composed of resistors, capacitors, or inductors capable of filtering and acquiring low-frequency signals.

[0054] In some embodiments, when the output of the second combiner branch 22 is a signal located in a different frequency band of a frequency band signal, the second combiner branch 22 can be a band-stop filter composed of resistors, capacitors or inductors that can suppress the passage of signals in a certain frequency band while allowing other signals to pass.

[0055] In this embodiment of the application, in order to enable the combining path 122 to output a combination of two different frequency band signals when it is in working state, the frequency band of the signal that the first combining branch 21 can acquire is different from the frequency band of the signal that the second combining branch 22 can acquire.

[0056] In some embodiments, when the first combining branch 21 can output signals located in different frequency bands of a frequency band signal, that is, when the first combining branch 21 can output two different frequency band signals and the second combining branch 22 can output a frequency band signal, the combining path 122 including the first combining branch 21 and the second combining branch 22 can output a combined signal of three different frequency band signals.

[0057] In other embodiments, when the first combining branch 21 can output signals located in different frequency bands within a single frequency band signal (i.e., the first combining branch 21 can output two different frequency band signals), and the second combining branch 22 can also output signals located in different frequency bands within a single frequency band signal (i.e., the second combining branch 22 can also output two different frequency band signals), then the combining path 122 including the first combining branch 21 and the second combining branch 22 can output a combined signal of four different frequency band signals.

[0058] For example, when the frequency band of an antenna signal is divided into extremely low frequency (ELF) signals and lower frequency signals, intermediate frequency (IF) signals, higher frequency signals, high frequency signals, or extremely high frequency signals based on different frequency magnitudes, the ELF and lower frequency signals refer to the aforementioned low frequency signal classifications, while the higher frequency, high frequency, or extremely high frequency signals refer to the aforementioned high frequency signal classifications. Since the frequency band division can be set according to requirements, it can be understood that the frequency of the lower frequency signal may sometimes fall within the range of other IF or high frequency signals. Similarly, the high frequency signal may sometimes fall within the range of other low frequency or IF signals, and the other frequency band divisions are also based on the same principle, which will not be elaborated further here. Taking the aforementioned antenna signals as examples, which are categorized into six frequency bands based on their frequency magnitude: extremely low frequency (VLF), lower frequency (LLF), intermediate frequency (IF), higher frequency (QLF), high frequency, and extremely high frequency (EHF). Furthermore, the frequencies of these six different frequency bands are not continuous. When the first combining branch 21 can output signals from different frequency bands within the low-frequency band, i.e., the first combining branch 21 can output both VLF and LLF signals, the second combining branch 22 can output signals from different frequency bands within the high-frequency band, i.e., the second combining branch 22 can also output both QLF and EHF signals. In this case, the combining path 122, including the first combining branch 21 and the second combining branch 22, can output a combined signal of these four different frequency bands: low-frequency, lower frequency, higher frequency, and EHF signals.

[0059] In some embodiments, where the first combining branch 21 can be a filter that outputs an intermediate frequency signal or a high frequency signal, please refer to [reference needed]. Figure 3 , Figure 3 This is a schematic structural diagram of another radio frequency compatible circuit disclosed in an embodiment of this application, wherein the first combining branch 21 includes a first capacitor 31, a first inductor 32, a second capacitor 33, and a ground terminal 34. One end of the first capacitor 31 is connected to the stationary contact of the first selector switch 121, and the other end of the first capacitor 31 is connected to one end of the second capacitor 33 and one end of the first inductor 32 respectively. The other end of the second capacitor 33 is connected to the first moving contact of the first selector switch 121, and the other end of the first inductor 32 is connected to the ground terminal 34. The first combiner branch 21 is used to output the intermediate frequency signal or high frequency signal from the second antenna signal when the combiner path 122 is in working condition.

[0060] Optionally, the first capacitor 31, the first inductor 32, or the second capacitor 33 can be resistor-capacitor-inductor devices with package codes 01005 or 0201. The package size of the 01005 resistor-capacitor-inductor device is 0.4mm × 0.2mm, and the package size of the 0201 resistor-capacitor-inductor device is 0.6mm × 0.3mm. It can be seen that using resistor-capacitor-inductor devices with package codes 01005 or 0201 as the first capacitor 31, the first inductor 32, or the second capacitor 33 can reduce the space occupied by the component design of the RF compatible circuit due to their very small package size.

[0061] To protect the first selector switch 121 from damage caused by excessive voltage or current during operation, please refer to [link to relevant documentation]. Figure 4 , Figure 4 This is a schematic structural diagram of another RF compatible circuit provided in an embodiment of this application. The path selection module 12 includes a first resistor 41 and a second resistor 42. The stationary contact of the first selector switch 121 is connected to the first capacitor 31 through the first resistor 41, and the first moving contact of the first selector switch 121 is connected to the second capacitor 33 through the second resistor 42, wherein: The first resistor 41 and the second resistor 42 are used to protect the first selector switch 121 when it is in the working state.

[0062] Alternatively, in order to reduce the space occupied by the component design of the RF compatible circuit, the first resistor 41 and the second resistor 42 can be resistive-capacitive-inductive devices using package codes 01005 or 0201.

[0063] To further reduce the space occupied by the RF compatible circuit's component design, please refer to [further details]. Figure 4 The path selection module 12 may include a first common pad 43 and a second common pad 44. The first resistor 41 and the first capacitor 31 share the first common pad 43, and the second resistor 42 and the second capacitor 33 share the second common pad 44.

[0064] A common solder pad refers to a solder pad on a printed circuit board that can accommodate components of different sizes. For example, the same common solder pad may include a first soldering part for mounting a first resistor 41, and may also include a second soldering part for mounting a first capacitor 31. The first soldering part may also include a solder resist isolation area to isolate the first and second soldering parts, preventing cross-soldering when different components are soldered. Optionally, this solder resist isolation area may be a solder resist ink area; no specific limitations are imposed here.

[0065] In this embodiment, the first resistor 41 and the first capacitor 31 share the first common pad 43, and the second resistor 42 and the second capacitor 33 share the second common pad 44. It is understood that when the first selection switch 121 is active, the first resistor 41 and the first capacitor 31 are not left unattached in the first pad, so that the first resistor 41 is active and the first capacitor 31 is inactive. Similarly, the second resistor 42 and the second capacitor 33 are not left unattached in the second pad, so that the second resistor 42 is active and the second capacitor 33 is inactive. This ensures that when the first selection switch 121 is active, only the third resistor 61 is active in the first common pad 43, and only the second resistor 42 is shared in the second common pad 44. This not only avoids signal interference between the first resistor 41 and the first capacitor 31, and between the second resistor 42 and the second capacitor 33, but also reduces the space occupied by the RF circuit because both devices share a common pad.

[0066] In some embodiments, where the second combining branch 22 is a filter capable of outputting low-frequency signals, please refer to [reference needed]. Figure 5 , Figure 5 This is a schematic structural diagram of another radio frequency circuit provided in an embodiment of this application. The second combining branch 22 includes a second inductor 51, a third capacitor 52, and a third inductor 53. One end of the second inductor 51 is connected to the stationary contact of the first switch, and the other end of the second inductor 51 is connected to one end of the third inductor 53 and one end of the third capacitor 52. The other end of the third inductor 53 is connected to the second moving contact of the first selector switch 121, and the other end of the third capacitor 52 is connected to the ground terminal 34. The second combiner branch 22 is used to output the low-frequency signal from the second antenna signal when the combiner path 122 is in operation.

[0067] Optionally, the second inductor 51, the third capacitor 52, or the third inductor 53 can be resistor-capacitor-inductor devices with package codes 01005 or 0201. The package size of the 01005 resistor-capacitor-inductor device is 0.4mm × 0.2mm, and the package size of the 0201 resistor-capacitor-inductor device is 0.6mm × 0.3mm. It can be seen that using resistor-capacitor-inductor devices with package codes 01005 or 0201 as the second inductor 51, the third capacitor 52, or the third inductor 53 can reduce the space occupied by the component design of the RF compatible circuit due to their very small package size.

[0068] To protect the first selector switch 121 from damage caused by excessive voltage or current during operation, please refer to [link to relevant documentation]. Figure 6 , Figure 6 This is a schematic structural diagram of another radio frequency compatible circuit provided in an embodiment of this application. The path selection module 12 further includes a third resistor 61 and a fourth resistor 62. The stationary contact of the first selector switch 121 is connected to the second inductor 51 through the third resistor 61, and the second moving contact of the first selector switch 121 is connected to the third inductor 53 through the fourth resistor 62. The third resistor 61 and the fourth resistor 62 are used to protect the first selector switch 121 when it is in the working state.

[0069] Alternatively, in order to reduce the space occupied by the component design of the RF compatible circuit, the third resistor 61 and the fourth resistor 62 can be resistive-capacitive-inductive devices using package codes 01005 or 0201.

[0070] To further reduce the space occupied by the RF compatible circuit's component design, please refer to [further details needed]. Figure 5 The path selection module 12 may include a third common pad 63.

[0071] The fourth resistor 62 and the third inductor 53 share the third common pad 63.

[0072] In this embodiment, the third inductor 53 and the fourth resistor 62 share the third common pad 63. It is understood that when the first selection switch 121 is active, the third resistor 61 is not left unattached in the first pad, and the third inductor 53 is left unattached, so that the third resistor 61 is active while the third inductor 53 is inactive. This ensures that when the first selection switch 121 is active, only the third resistor 61 is active in the third common pad 63, thus avoiding signal interference between the third resistor 61 and the third inductor 53, and reducing the space occupied by the RF circuit by using a single common pad for both devices.

[0073] For example, taking a mobile phone as an example, the first selection switch is a single-pole double-throw switch. The first combining branch of the combining path is a high-pass filter that can acquire frequency signals above 1710MHz, and the second combining branch is a low-pass filter that can acquire frequency signals below 960MHz. Please refer to [link / reference]. Figure 7 , Figure 7 This is a schematic structural diagram of another RF compatible circuit provided in an embodiment of this application; the single-pole double-throw switch k1 includes one stationary contact and two moving contacts. The first combining branch includes a first capacitor C1 with a capacitance of 1.5pF, a first inductor L1 with an inductance of 3.6pF, and a second capacitor C2 with a capacitance of 3.9pF. The second combining branch includes a second inductor L2 with an inductance of 10nH, a third capacitor C3 with a capacitance of 3.3pF, and a third inductor L3 with an inductance of 7.5nH.

[0074] In this circuit, one end of the first capacitor C1 is connected to the stationary contact of the single-pole double-throw switch K1 and the second inductor L2. The other end of the first capacitor C1 is connected to one end of the second capacitor C2 and one end of the first inductor L1. The other end of the second capacitor C2 is connected to the first moving contact of the single-pole double-throw switch K1. The other end of the first inductor L1 is connected to the ground terminal. One end of the second inductor L2 is connected to the stationary contact of the single-pole double-throw switch K1 and one end of the first capacitor C1. The other end of the second inductor L2 is connected to one end of the third inductor L3 and one end of the third capacitor C3. The other end of the third inductor L3 is connected to the second moving contact of the single-pole double-throw switch K1. The other end of capacitor C3 is connected to ground. Furthermore, as shown in the diagram, to include single-pole double-throw switch k1 during operation, the circuit path also includes resistors R1, R2, and R3. The stationary contact of single-pole double-throw switch k1 is connected to the first capacitor C1 and the second inductor L2 via resistor R1. The first moving contact of single-pole double-throw switch k1 is connected to the second capacitor via resistor R2. The second moving contact of single-pole double-throw switch k1 is connected to the third inductor L3 via resistor R3. Resistor R1 and the first capacitor C1 share a first common pad, resistor R2 and the second capacitor C2 share a second common pad, and resistor R3 and the third inductor L3 share a third common pad. Additionally, to avoid impedance mismatch, the first capacitor C1 can be positioned close to the first common pad that accommodates resistor R1 and the first capacitor C1. Furthermore, in order to ensure that the common matching position of the first and second combining branches can function properly, the combining path also includes an inductor L4, one end of which is connected to the antenna receiving module and the other end is connected to the first capacitor C1.

[0075] When the single-pole double-throw switch k1 is in the working state, resistors R1, R2, and R3 are not unplugged, and the electronic components related to the operation of the first and second combining branches are unplugged. The output first antenna signal includes any one of the following frequency bands: high-frequency signal, intermediate-frequency signal, or low-frequency signal. When the first and second combining branches of the combining circuit are working, the single-pole double-throw switch k1, resistors R1, R2, and R3 are not connected, and the electronic components related to the operation of the first and second combining branches are not connected. That is, the first capacitor C1, the first inductor L1, the second capacitor C2, the second inductor L2, the third capacitor C3, and the third inductor L3 are not connected. The output second antenna signal is a combination channel with a signal frequency of 1710MHz or higher and a signal frequency of 960MHz or lower.

[0076] It is understandable that, with the single-pole double-throw switch k1, resistors R1, R2, and R3 unconnected, and the first capacitor C1, first inductor L1, second capacitor C2, and third capacitor C3 in the combining branch also unconnected, except for the second inductor L2 and third inductor L3, this second combining branch can replace one selection path of the single-pole double-throw switch k1. Similarly, with the single-pole double-throw switch k1, resistors R1, R2, and R3 unconnected, and the second inductor L2, third capacitor C3, and third capacitor in the combining branch also unconnected, except for the first capacitor C1 and second capacitor C2, this second combining branch can replace another selection path of the single-pole double-throw switch k1.

[0077] Please refer to the embodiments in this application for further details. Figure 1 The combining path 122 is connected to the first filtering module 13 to filter the first antenna signal or the second antenna signal obtained from the combining branch; It is understood that the first filtering module 13 includes a filter on each branch according to the number of selectable branches of the first selection switch 121 or the combining path 122, in order to filter the acquired first antenna signal or second antenna signal.

[0078] In some embodiments, the filter of the first filtering module 13 can be designed using passive components such as inductors, capacitors, and resistors, or it can be designed using active components such as operational amplifiers. It is understood that different types of filter designs will have different component combinations, and no specific limitations are made here.

[0079] Optionally, there are many types of filters, which can be selected according to the actual situation. Filters can include low-pass filters, high-pass filters, band-pass filters, and band-stop filters, etc., without specific restrictions.

[0080] Please refer to the embodiments in this application for further details. Figure 1 The first filtering module 13 is connected to the receiving amplifier module and is used to amplify the filtered first antenna signal or second antenna signal obtained from the first filtering module 13.

[0081] A receiver amplifier module is an electronic module that uses internal electronic components to amplify the received first antenna signal or second antenna signal. It is designed to enhance the weak first antenna signal or second antenna signal to the required amplitude so that subsequent circuits can process it better.

[0082] In some embodiments, the receiver amplifier module may include an input matching circuit, an amplification circuit consisting of a low-noise amplifier, and a gain control circuit, etc., without specific limitations. It is understood that the composition of the electronic components of the receiver amplifier module is merely an example, and the receiver amplifier module may also include filters, etc.

[0083] For example, the receiving amplifier module first performs impedance matching on the input first antenna signal or second antenna signal through an input matching circuit, enabling efficient transmission of the first antenna signal or second antenna signal to the amplifier circuit. The amplifier circuit amplifies the weak first antenna signal or second antenna signal. During amplification, the low-noise amplifier minimizes the introduction of noise to ensure the quality of the first antenna signal or second antenna signal. The filter then filters the amplified first antenna signal or second antenna signal to remove out-of-band noise and interference signals. If gain control is required, the gain control circuit adjusts the amplifier gain according to the set or input control signal, finally outputting an amplified signal that meets the requirements.

[0084] In some embodiments, the RF compatible circuit includes a second filtering module, and the antenna receiving module 11 includes a second selection switch. The second selection switch is connected to both the second filtering module and the path selection module 12. The second filtering module is connected to the receiving amplifier module. The path selection module 12 is connected to the first filtering module 13. The first filtering module 13 is also connected to the receiving amplifier module. The second selection switch is used to receive antenna signals; The second filtering module is used to filter the antenna signal and output the third antenna signal, which is different from the first and second antenna signals. The receiver amplifier module is used to amplify the signal from the third antenna.

[0085] Optionally, the second selector switch can be a single-pole multi-throw switch 82, a relay switch, a solid-state relay, a photoelectric switch, a magnetic switch, a capacitive switch, a digital switch, etc., without specific limitations.

[0086] For example, taking a single-pole multi-throw switch 82 as the second selection switch, please refer to [link to relevant documentation]. Figure 8 , Figure 8 This application provides a schematic structural diagram of another RF-compatible circuit, which includes a second filter 81 and a single-pole multi-throw (SPMW) switch 82. The second filtering module includes multiple filtering paths, each connected to multiple moving contacts of the SPMW switch 82. The remaining moving contact of the SPMW switch 82 is connected to the path selection module 12. Each of the multiple filtering paths in the second filtering module includes at least one filter to filter the antenna signal obtained from the SPMW switch 82 and output a third antenna signal, which is different from the first and second antenna signals.

[0087] Optionally, the single-pole multi-throw switch 82 can be a single-pole eight-throw switch, a single-pole three-throw switch, or a single-pole six-throw switch, etc. There are no specific restrictions here, and it can be selected according to the actual situation.

[0088] In some embodiments, the filters on each branch of the second filtering module can be designed using passive components such as inductors, capacitors, and resistors, or active components such as operational amplifiers. It is understood that different types of filter designs will have different component combinations, and no specific limitations are imposed here.

[0089] Optionally, there are many types of filters, which can be selected according to the actual situation. Filters can include low-pass filters, high-pass filters, band-pass filters, and band-stop filters, etc., without specific restrictions.

[0090] Please refer to further information. Figure 7 The receiving amplifier module is also connected to the second filtering module. Therefore, the receiving amplifier module can amplify the received third antenna signal through its internal electronic components, increasing the weak third antenna signal to the required amplitude so that subsequent circuits can process it better.

[0091] Based on the power consumption control circuit described above, this application also discloses an electronic device, please refer to [link to relevant documentation]. Figure 9 , Figure 9 This is a schematic structural diagram of an electronic device disclosed in an embodiment of this application. The electronic device 200 includes any of the above-described radio frequency compatible circuits 100.

[0092] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also recognize that the embodiments described in the specification are optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0093] In the various embodiments of this application, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0094] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; they can be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0095] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0096] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three kinds of relationships. For example, object A and / or object B can represent three situations: object A exists alone, object A and object B exist simultaneously, and object B exists alone.

[0097] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0098] The methods disclosed in the several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0099] The features disclosed in the several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0100] The features disclosed in the several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method or device embodiments.

[0101] The radio frequency compatible circuits disclosed in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A radio frequency compatible circuit, characterized in that, The RF compatible circuit includes an antenna receiving module, a path selection module, a first filtering module, and a receiving amplifier module. The path selection module includes a first selection switch and at least one combining path. Each of the at least one combining path includes a resistor-capacitor-inductor device. The first selection switch is connected in parallel with each combining path. One end of the path selection module is connected to the antenna receiving module, and the other end of the path selection module is connected to the first filtering module. The first filtering module is also connected to the receiving amplifier module, wherein: The antenna receiving module is used to receive antenna signals; The path selection module is used to output a first antenna signal when the first selection switch is in the working state. The first antenna signal includes any one of the frequency band signals of high frequency signal, intermediate frequency signal or low frequency signal in the antenna signal. The path selection module is also used to output a second antenna signal when the combining path is in the working state. The second antenna signal includes a combination signal of any two frequency bands of the antenna signal, namely high frequency signal, intermediate frequency signal or low frequency signal. The first filtering module is used to filter the obtained first antenna signal or second antenna signal; The receiving amplifier module is used to amplify the filtered first antenna signal or the second antenna signal.

2. The radio frequency compatible circuit according to claim 1, characterized in that, The merging path includes a first merging branch and a second merging branch. One end of the first merging branch is connected to the stationary contact of the first selector switch, and the other end of the first merging branch is connected to the first moving contact of the first selector switch. One end of the second merging branch is connected to the stationary contact of the first selector switch, and the other end of the second merging branch is connected to the second moving contact of the first selector switch. The first combining branch is used to output a first sub-antenna signal when the combining path is in operation, the first sub-antenna signal including one frequency band signal from the second antenna signal; The second combiner branch is used to output a second sub-antenna signal when the combiner path is in operation. The second sub-antenna signal includes another frequency band signal in the second sub-antenna signal.

3. The radio frequency compatible circuit according to claim 2, characterized in that, The first combining branch includes a first capacitor, a first inductor, and a second capacitor. One end of the first capacitor is connected to the stationary contact of the first selector switch, the other end of the first capacitor is connected to one end of the second capacitor and one end of the first inductor, the other end of the second capacitor is connected to the first moving contact of the first selector switch, and the other end of the first inductor is connected to the ground terminal. The first combining branch is used to output the intermediate frequency signal or high frequency signal from the second antenna signal when the combining path is in operation.

4. The radio frequency compatible circuit according to claim 3, characterized in that, The path selection module includes a first resistor and a second resistor. The stationary contact of the first selector switch is connected to the first capacitor via the first resistor, and the first moving contact of the first selector switch is connected to the second capacitor via the second resistor, wherein: The first resistor and the second resistor are used to protect the first selector switch when the first selector switch is in the working state.

5. The radio frequency compatible circuit according to claim 4, characterized in that, The path selection module includes a first common pad and a second common pad. The first resistor and the first capacitor share the first common pad, and the second resistor and the second capacitor share the second common pad.

6. The radio frequency compatible circuit according to claim 2, characterized in that, The second combined branch includes a second inductor, a third capacitor, and a third inductor. One end of the second inductor is connected to the stationary contact of the first selector switch, and the other end of the second inductor is connected to one end of the third inductor and one end of the third capacitor. The other end of the third inductor is connected to the second moving contact of the first selector switch, and the other end of the third capacitor is connected to the ground terminal. The second combiner branch is used to output the low-frequency signal from the second antenna signal when the combiner path is in operation.

7. The radio frequency compatible circuit according to claim 6, characterized in that, The path selection module also includes a third resistor and a fourth resistor. The stationary contact of the first selector switch is connected to the second inductor through the third resistor, and the second moving contact of the first selector switch is connected to the third inductor through the fourth resistor; The third resistor and the fourth resistor are used to protect the first selector switch when the first selector switch is in the working state.

8. The radio frequency compatible circuit according to claim 7, characterized in that, The path selection module includes a third common pad, which is shared by the fourth resistor and the third inductor.

9. The radio frequency compatible circuit according to claim 1, characterized in that, The RF compatible circuit includes a second filtering module, and the antenna receiving module includes a second selection switch. The second selection switch is connected to both the second filtering module and the path selection module. The second filtering module is connected to the receiving amplifier module. The path selection module is connected to the first filtering module. The first filtering module is also connected to the receiving amplifier module, wherein: The second selection switch is used to receive antenna signals; The second filtering module is used to filter the antenna signal and output a third antenna signal, which is different from the first antenna signal and the second antenna signal. The receiving amplifier module is used to amplify the signal from the third antenna.

10. An electronic device, characterized in that, Includes the radio frequency compatible circuit as described in any one of claims 1-9.

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