CN108258421B - Nonlinear assembly, circuit board structure and electronic device - Google Patents

Abstract

The embodiment of the present application relates to the field of terminal technology, and discloses a nonlinear component, a circuit board structure and an electronic device. Wherein, the nonlinear component is applied to an electronic device with an antenna, and the nonlinear component is set close to the clearance area of the antenna; the nonlinear component includes a nonlinear device, a first filter device, a second filter device and a controller; the first filter device is used In the case where the antenna performs uplink transmission, the energy radiated by the antenna is prevented from being coupled to the nonlinear device; the second filter device is used to prevent the energy radiated by the antenna from being coupled to the nonlinear device when the antenna performs downlink transmission; the controller , when the antenna performs uplink transmission, control the first filter device to be in an enabled state; and/or, when the antenna performs downlink reception, control the second filter device to be in an enabled state. By implementing the embodiments of the present application, the causes of spurious antenna radiation can be eliminated from the source, and the radiation performance of the antenna can be improved.

Description

Nonlinear Components, Circuit Board Structures and Electronic Devices

technical field

The present application relates to the technical field of terminals, in particular to a nonlinear component, a circuit board structure and an electronic device.

Background technique

As a mandatory certification indicator for electronic equipment, radiation spurious is the most complicated and difficult problem in all certifications. Especially for the Global System for Mobile Communication (GSM) frequency band, because its own power is particularly high, it is easy to excite strong energy in an instant and cause the radiation of spurious harmonics to exceed the standard. In actual use, the third harmonic of GSM900 tends to exceed the standard, and the second or third harmonic of GSM 1800 exceeds the standard.

For radio frequency signals, the transmitted signal will not only contain available signals (for example, GSM 900), but often also contain second (1800MHz)/third harmonic components (2700MHz). In practical applications, mainly the third harmonic will exceed the standard. Similarly, when the third harmonic energy of the radio frequency signal reaches the third resonance of the antenna, the energy of these higher harmonics will be radiated out, resulting in excessive radiation spurious.

Therefore, how to improve the radiation spurious situation of the electronic device has become an urgent problem to be solved.

Contents of the invention

Embodiments of the present application provide a nonlinear component, a circuit board structure, and an electronic device, which can effectively reduce the influence of nonlinear devices close to the antenna on the radiation performance of the antenna.

In the first aspect, the embodiment of the present application provides a nonlinear component, the nonlinear component is applied to an electronic device with an antenna, and the nonlinear component is set close to the clearance area of the antenna; the nonlinear component includes a non-linear a linear device, a filter device and a controller, the nonlinear device is connected to the filter device, and the filter device is connected to the controller;

The filter device is used to prevent the energy radiated by the antenna from being coupled to the nonlinear device to cause the nonlinear device to generate higher harmonics; wherein the filter device includes a first filter device and a second filter device;

The controller is used to control the first filter device to be in an enabled state when the antenna performs uplink transmission; and/or, when the antenna performs downlink reception, controls the second filter device is enabled.

In a second aspect, an embodiment of the present application provides a circuit board structure, which is characterized in that the circuit board structure includes a main board and the nonlinear component described in the first aspect above.

In a third aspect, an embodiment of the present application provides an electronic device, where the electronic device includes an antenna and the circuit board structure described in the second aspect above.

The nonlinear component, circuit board structure, and electronic device provided by the embodiments of the present application can prevent the energy radiated by the antenna from being coupled by the nonlinear device near the antenna to generate high-order harmonics that are transmitted to the antenna, causing the antenna to generate radiation spurious, thereby from the source Eliminate the causes of some antenna radiation spurs and improve the radiation performance of the antenna.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application;

FIG. 2A is a structural block diagram of an electronic device disclosed in an embodiment of the present application;

FIG. 2B is a structural block diagram of another electronic device disclosed in the embodiment of the present application;

FIG. 2C is a schematic diagram of the back of an electronic device disclosed in an embodiment of the present application;

FIG. 3 is a specific structural diagram of an electronic device disclosed in an embodiment of the present application;

FIG. 4 is a specific structural diagram of another electronic device disclosed in the embodiment of the present application;

FIG. 5 is a specific structural diagram of another electronic device disclosed in the embodiment of the present application;

FIG. 6 is a specific structural diagram of another electronic device disclosed in the embodiment of the present application;

FIG. 7 is a structural block diagram of a nonlinear component disclosed in the embodiment of the present application;

FIG. 8 is a structural block diagram of a circuit board structure disclosed in an embodiment of the present application;

FIG. 9 is a schematic structural diagram of another electronic device disclosed in an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the application, not all of them. . Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the term "thickness" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than implying Or indicates that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be construed as limiting the application, and the first and second are only for distinguishing, not referring to a specific Object.

The embodiment of the present application provides a nonlinear component and an electronic device, which can prevent the energy radiated by the antenna from being coupled by the nonlinear device near the antenna to generate high-order harmonics that are transmitted to the antenna, causing the antenna to generate radiation spurious, thereby eliminating it from the source Part of the cause of antenna radiation spurious, improve the radiation performance of the antenna. Each will be described in detail below.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of an electronic device 100 disclosed in an embodiment of the present application. As shown in FIG. 1 , the electronic device 100 includes an antenna 101 , a flexible printed circuit (FPC) 102 , a nonlinear device 103 and a main board 104 . Wherein, both the FPC 102 and the nonlinear device 103 are set close to the clearance area of the antenna 101 , and the nonlinear device 103 and the main board 104 are connected through the FPC 102 .

Specifically, the nonlinear device 103 may be various devices and a combination of devices in an electronic device, for example, a photosensitive component in a camera, a fingerprint holder of a fingerprint sensor, and the like. The antenna 101 can be a main antenna or a diversity wire.

In the embodiment of the present application, since the nonlinear device 103 and the FPC 102 are set close to the clearance area of the antenna, when the antenna is transmitting a radio frequency signal, the energy of the radio frequency signal is radiated through the antenna, and the FPC 102 is used as the main carrier of the coupling energy around the antenna. Coupling the energy of the radio frequency signal and conducting it to the nonlinear device 103; while the nonlinear device 103 converts the energy of the obtained radio frequency signal into the second harmonic and the third harmonic, and then these higher harmonics are conducted to the antenna and follow the radio frequency The signal is radiated out, resulting in excessive radiation spurious.

In the radio frequency signal emitted by the antenna, especially for the GSM frequency band, due to its high power, it is very easy to stimulate high-intensity energy in an instant and cause the radiation spurious to exceed the standard; in practical applications, especially the third harmonic radiation spurious Exceeding the standard is most likely to occur. Therefore, there is an urgent need for methods to suppress the excessive third harmonic radiation of GSM900 caused by nonlinear devices close to the antenna.

Please refer to FIG. 2A . FIG. 2A is a structural block diagram of an electronic device 200 disclosed in an embodiment of the present application. As shown in FIG. 2A , the electronic device 200 includes a nonlinear device 10 and a filter device 20 . The nonlinear device 10 and the filter device 20 can also constitute a nonlinear component, and its specific content will be specifically described in the embodiment corresponding to FIG. 7 . Besides, the electronic device 200 also includes an antenna, which is not shown in FIG. 2 . Wherein, the nonlinear device 10 is arranged close to the clearance area of the antenna, and the nonlinear device 10 is connected with the filter device 20 .

In the embodiment of the present application, the filtering device 20 is used to prevent the energy radiated by the antenna from being coupled to the nonlinear device 10 to cause the nonlinear device to generate higher harmonics. Specifically, the filter device 20 filters out the target energy that will be transmitted to the nonlinear device 10 , the target energy is the energy radiated by the antenna coupled with the conductive wire connecting the nonlinear device 10 and other components in the electronic device.

It can be seen that the electronic device described in FIG. 2A can prevent the energy radiated by the antenna from being coupled to the nonlinear device to cause the nonlinear device to generate high-order harmonics, and the high-order harmonics are conducted to the antenna and then emitted together with the radio frequency signal; therefore , the electronic device can improve the radiation spurious situation and improve the radiation performance of the antenna.

Further, please refer to FIG. 2B , which is a structural block diagram of another electronic device 200 disclosed in the embodiment of the present application. As shown in FIG. 2B, the filter device 20 includes a first filter device 21 and a second filter device 22, and the electronic device 200 also includes a controller 40;

Wherein, the controller 40 is used to control the first filter device 21 to be in an enabled state when the antenna performs uplink transmission; the controller 40 is also used to control the second filter device 22 to be in an enabled state when the antenna is used for downlink reception. able state.

Specifically, the controller 40 may include a single-pole double-throw switch, which is controlled by a control signal to select between the first filter device 21 and the second filter device 22; when the first filter device 21 is selected, the first filter The device 21 is in an enabled state; when the second filter device 22 is selected, the first filter device 22 is in an enabled state.

In the embodiment of the present application, the first filter device 21 is used to prevent the nonlinear device 10 from coupling energy in the first frequency range, and the second filter device 22 is used to prevent the nonlinear device 10 from coupling energy in the second frequency range.

Specifically, the working frequency band of the global communication system GSM900 is 890-960MHz, and the frequency points used by different operators are different; /downlink respectively: 909-915/954-960MHz. Since the frequency band used by the electronic device for uplink transmission and downlink reception is different, the first filter device 21 and the second filter device 22 can perform filtering for uplink transmission and downlink reception respectively, thereby accurately filtering out possible The energy conducted to the nonlinear device 10 avoids spurious radiation caused by the energy leaked by the nonlinear device 10 when the antenna is coupled for uplink transmission or uplink reception.

Therefore, since the first filter device 21 is enabled when the antenna performs uplink transmission, the first frequency range of its filtering may be the uplink frequency band, that is, the frequency range including 890Mhz to 915Mhz; correspondingly, the second filter device 22 performs filtering The second frequency range may be a downlink frequency band, that is, a frequency range including 935Mhz˜960Mhz.

It can be seen that, using the electronic device described in Figure 2B, different filtering devices can be used for filtering in the process of uplink transmission and downlink reception, so as to improve the effectiveness of the filtering operation, thereby effectively preventing the energy radiated by the antenna from being coupled to non- The linear device causes the nonlinear device to generate high-order harmonics, and the high-order harmonics are transmitted to the antenna and then emitted together with the radio frequency signal; therefore, the electronic device can improve the radiation spurious situation and improve the radiation performance of the antenna.

Specifically, the nonlinear device 10 has a power supply pin 11 and a clock pin 12 ; the filter device 20 filters target energy to be conducted to the nonlinear device 10 from the power supply pin 11 and/or the clock pin 12 .

In the embodiment of the present application, the electronic device 200 may further include a main board 30 , and the nonlinear device 10 is connected to the main board 30 via the filter device 20 ; the main board 30 may include a first end 31 and a second end 32 .

In the embodiment of the present application, the electronic device 200 may further include a flexible circuit board (Flexible Printed Circuit, FPC). The FPC is used to connect the nonlinear device 10 and the main board 30 . It can be seen from FIG. 1 that if the nonlinear device 10 is set close to the clearance area of the antenna, the FPC used to connect the nonlinear device 10 and the main board 30 is also set close to the clearance area of the antenna, and often "passes" the antenna to connect the nonlinear device 10 The vertical projection of the main board 30 , that is, the FPC, intersects with the antenna.

Therefore, due to the position of the FPC, the FPC will couple the energy radiated by the antenna, and conduct the coupled energy to the nonlinear device 10, causing the nonlinear device 10 to generate high-order harmonics, thereby causing the radiation spurious to exceed the standard.

Therefore, as an optional embodiment, the filter device 20 can be located at the connection between the FPC and the main board 30, or at the connection between the FPC and the nonlinear device 10; , SMT) connected to one side of the flexible circuit board. Therefore, the coupling energy can be filtered out before the FPC conducts it to the nonlinear device 10, thereby improving the problem of excessive radiation strays.

As an optional implementation, the electronic device 200 may also include a back cover 50, and the back cover 50 may include a frame and a battery cover; wherein, the back cover 50 has a housing cavity, the nonlinear device 10, the filter device 20, the main board 30 and The FPC can be disposed in the receiving cavity, and the antenna can be disposed on the inner surface of the rear cover 50 .

Please refer to FIG. 2C . FIG. 2C is a schematic diagram of the back of an electronic device disclosed in an embodiment of the present application. As an optional implementation manner, the back cover 50 is provided with a plurality of slits 51 corresponding to the positions of the antennas to form a clearance area on the back cover 50 for sending and receiving signals of the antennas. Wherein, the plurality of slits mentioned above are parallel slits, and insulating materials such as resin material or glue are filled between two adjacent slits to enhance the strength of the rear cover 50 .

As an optional embodiment, the above-mentioned multiple slits 51 are micro-slits, the slit width is 0.05 mm, 0.3 mm, or any value from 0.05 mm to 0.3 mm, and the number of multiple slits 51 is 5 or 10 Or any number from 5 to 10. Among them, the slit width of the micro-slit is greater than 0.05mm, so that the micro-slit cannot be directly distinguished by the user, and ensures the lowest RF efficiency of the rear cover 50; Still cannot be identified by the user, and the radio frequency efficiency of the rear cover 50 is improved. Similarly, the minimum number of micro-slits is controlled at 5 to ensure the radiation performance of the back cover 50 , and the maximum number of micro-slits is controlled at 10 to ensure the appearance requirements of the back cover 50 .

Hereinafter, the structure of the first filter device 21 will be specifically described. It can be understood that the second filter device 22 can adopt a similar or identical structure to achieve the purpose of filtering; Therefore, the capacitance, resistance and/or inductance of the components used in the two are different.

As an optional implementation manner, the first filter device 21 may include a first capacitor 201 and a second capacitor 202 . The first capacitor 201 includes a first terminal 2011 and a second terminal 2012 , and the second capacitor 202 includes a first terminal 2021 and a second terminal 2022 . When the first filter device 21 is in an enabled state, please refer to FIG. 3 , which is a schematic structural diagram of another electronic device disclosed in an embodiment of the present application. In FIG. 3 , the nonlinear device 10 and the first An example of a connection relationship of a filter device 21 .

As shown in Figure 3, the power supply pin 11 is connected to the first terminal 2011 of the first capacitor 201, and the second terminal 2012 of the first capacitor 201 is grounded; the clock pin 12 is connected to the first terminal 2021 of the second capacitor 202, and the second capacitor The second end 2022 of 202 is grounded.

As another optional implementation manner, the first filter device 21 may include a first inductor 204 and a second inductor 205 . When the first filter device 21 is in the enabled state, please refer to FIG. 4 , which is a schematic structural diagram of another electronic device disclosed in the embodiment of the present application, and the connection relationship between the nonlinear device 10 and the first filter device 21 See Figure 4.

As shown in FIG. 4 , the power pin 11 is connected to the first end 31 of the main board 30 through the first inductor 204 , and the clock pin 12 is connected to the second end 32 of the main board 30 through the second inductor 205 .

As another optional implementation manner, the first filter device 21 may include a first RLC parallel resonant circuit 207 and a second RLC parallel resonant circuit 208 . The first RLC parallel resonance circuit 207 includes an input terminal 2071 and an output terminal 2072 , and the second parallel resonance circuit 208 includes an input terminal 2081 and an output terminal 2082 . When the first filter device 21 is in the enabled state, please refer to FIG. 5 , which is a schematic structural diagram of another electronic device disclosed in the embodiment of the present application, and the connection relationship between the nonlinear device 10 and the first filter device 21 See Figure 5.

As shown in Figure 5, the power supply pin 11 is connected to the input end 2071 of the first RLC parallel resonant circuit 207, the output end 2072 of the first RLC parallel resonant circuit 207 is grounded; the clock pin 12 is connected to the input end of the second parallel resonant circuit 208 2081, the output terminal 2082 of the second parallel resonant circuit 208 is grounded.

As another optional implementation manner, the first filter device 21 may include a first RLC series resonant circuit 210 and a second RLC series resonant circuit 211 . When the first filter device 21 is in the enabled state, please refer to FIG. 6 , which is a schematic structural diagram of another electronic device disclosed in the embodiment of the present application, and the connection relationship between the nonlinear device 10 and the first filter device 21 See Figure 6.

As shown in FIG. 6 , the power pin 11 is connected to the first terminal 31 of the mainboard 30 through the first RLC series resonant circuit 210 , and the clock pin 12 is connected to the second terminal 32 of the mainboard 30 through the second RLC series resonant circuit 211 .

Please refer to FIG. 7 , which is a structural block diagram of a nonlinear component 700 disclosed in an embodiment of the present application. As shown in FIG. 7 , the nonlinear component 700 includes a nonlinear device 10 , a filter device 20 and a controller 40 , the nonlinear device 10 is connected to the filter device 20 , and the filter device 20 is connected to the controller 40 . Wherein, the nonlinear component 700 can be applied to an electronic device with an antenna, and the nonlinear component 700 is disposed close to the clearance area of the antenna.

In the embodiment of the present application, the filtering device 20 is used to prevent the energy radiated by the antenna from being coupled to the nonlinear device 10 to cause the nonlinear device to generate higher harmonics. Specifically, the filter device 20 filters out the target energy that will be transmitted to the nonlinear device 10 , the target energy is the energy radiated by the antenna coupled with the conductive wire connecting the nonlinear device 10 and other components in the electronic device.

In the embodiment of the present application, the filter device 20 may include a first filter device 21 and a second filter device 22. The controller 40 is used to control the first filter device 21 to be in an enabled state when the antenna performs uplink transmission, and is also used to When the antenna performs downlink reception, the second filter device 22 is controlled to be in an enabled state.

Wherein, for the connection relationship between the nonlinear device 10 and the first filter device 21 , reference may be made to the specific descriptions of the embodiments corresponding to FIG. 3 to FIG. 6 , which will not be repeated here. It should be noted that, when the second filter device 22 is enabled, the connection relationship between the second filter device 22 and the nonlinear device 10 can be set with reference to the connection relationship between the first filter device 21 and the nonlinear device 10 .

It can be seen that the nonlinear component described in Figure 7 can prevent the energy radiated by the antenna from coupling to the nonlinear device and cause the nonlinear device to generate higher harmonics, which are transmitted to the antenna and then emitted together with the radio frequency signal; Therefore, using the nonlinear component can improve the radiation spurious situation and improve the radiation performance of the antenna.

Please refer to FIG. 8 . FIG. 8 is a structural block diagram of a circuit board structure disclosed in an embodiment of the present application. As shown in FIG. 8 , the circuit board structure 800 includes a main board 801 and a nonlinear component 802 , and the main board 801 is connected to the nonlinear component 802 .

In the embodiment of the present application, the nonlinear component 802 may include a nonlinear device, a filter device, and a controller. The filter device is used to prevent the energy radiated by the antenna from being coupled to the nonlinear device to cause the nonlinear device to generate higher harmonics. Wherein, the filter device includes a first filter device and a second filter device;

The controller is configured to control the first filter device to be in an enabled state when the antenna performs uplink transmission; and/or control the second filter device to be in an enabled state when the antenna performs downlink reception.

Wherein, for the connection relationship between the nonlinear device and the first filter device or the second filter device, reference may be made to the specific descriptions of the embodiments corresponding to FIG. 3 to FIG. 6 , which will not be repeated here.

It can be seen that the circuit board structure described in Figure 8 can prevent the energy radiated by the antenna from coupling to the nonlinear device and cause the nonlinear device to generate higher harmonics, which are conducted to the antenna and then emitted together with the radio frequency signal; Therefore, using the nonlinear component can improve the radiation spurious situation and improve the radiation performance of the antenna.

The embodiment of the present application also provides another electronic device, as shown in FIG. 9 , which is a schematic structural diagram of another electronic device disclosed in the implementation of the present application. For ease of description, only the parts related to the embodiment of the present application are shown. The electronic device can be any electronic device such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales, sales terminal), a vehicle-mounted computer, etc. Taking the electronic device as a mobile phone as an example:

FIG. 9 is a block diagram showing a partial structure of a mobile phone related to the electronic device provided by the embodiment of the present application. Referring to FIG. 9 , the mobile phone includes: a radio frequency (Radio Frequency, RF) circuit 910 , a memory 920 , a processor 930 , and a power supply 940 and other components. Those skilled in the art can understand that the structure of the mobile phone shown in FIG. 8 does not constitute a limitation to the mobile phone, and may include more or less components than shown in the figure, or combine some components, or arrange different components.

The following is a specific introduction to each component of the mobile phone in conjunction with Figure 9:

RF circuitry 910 may be used for the reception and transmission of information. Generally, the RF circuit 910 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier (Low Noise Amplifier, LNA), a duplexer, and the like. In addition, RF circuitry 910 may also communicate with networks and other devices via wireless communications. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile Communication (Global System of Mobile communication, GSM), General Packet Radio Service (General Packet Radio Service, GPRS), Code Division Multiple Access (Code Division Multiple Access) Access, CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (Long Term Evolution, LTE), email, Short Messaging Service (Short Messaging Service, SMS), etc. The radio frequency circuit 810 in the embodiment of the present application implements amplification and transmission of multiple carrier signals of different frequencies through one amplifier, which can save the number of power amplifiers used and material costs during carrier aggregation.

The memory 920 can be used to store software programs and modules, and the processor 930 executes various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 920 . The memory 920 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function, etc.; the data storage area may store data created according to the use of the mobile phone, etc. In addition, the memory 920 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

The processor 930 is the control center of the mobile phone. It uses various interfaces and lines to connect various parts of the entire mobile phone. By running or executing software programs and/or modules stored in the memory 920, and calling data stored in the memory 920, execution Various functions and processing data of the mobile phone, so as to monitor the mobile phone as a whole. Optionally, the processor 930 may include one or more processing units; preferably, the processor 930 may integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces, and application programs, etc. , the modem processor mainly handles wireless communications. It can be understood that the foregoing modem processor may not be integrated into the processor 930 .

The mobile phone also includes a power supply 940 (such as a battery) for supplying power to each component. Preferably, the power supply can be logically connected to the processor 930 through the power management system, so that functions such as charging, discharging, and power consumption management can be realized through the power management system.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or can be Integrate into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

The embodiments of the present application have been introduced in detail above, and specific examples have been used in this paper to illustrate the principles and implementation methods of the present application. The descriptions of the above embodiments are only used to help understand the core idea of the present application; meanwhile, for those in the art Ordinary technicians, based on the idea of this application, will have changes in specific implementation methods and application ranges. In summary, the content of this specification should not be construed as limiting this application.

Claims (13)

1. A nonlinear component, characterized in that, the nonlinear component is applied to an electronic device with an antenna, and the nonlinear component is set near the clearance area of the antenna; the nonlinear component includes a nonlinear device, a second a filter device, a second filter device and a controller; The first filtering device is configured to prevent energy radiated by the antenna from being coupled to the nonlinear device when the antenna performs uplink transmission, wherein the nonlinear component includes a power supply pin and a clock pin , wherein the first filtering device includes two capacitors, or two inductors, or two RLC parallel resonant circuits, or two RLC series resonant circuits, which are respectively connected to the power supply pin and the clock of the nonlinear component pin connection; The second filter device is configured to prevent energy radiated by the antenna from being coupled to the nonlinear device when the antenna performs downlink reception, wherein the second filter device includes two capacitors, or two An inductor, or two RLC parallel resonant circuits, or two RLC series resonant circuits are also respectively connected to the power supply pin and the clock pin of the nonlinear component, and the first filtering device and the second The filter devices adopt the same structure, but the components used have different capacitance values, resistance values and/or inductance values; The controller is used to control the first filter device to be in an enabled state when the antenna performs uplink transmission; and/or, when the antenna performs downlink reception, controls the second filter device is enabled. 2. The nonlinear component according to claim 1, wherein the first filter device is used to prevent the nonlinear device from coupling the energy of the first frequency range radiated by the antenna; The second filtering device is configured to prevent the nonlinear device from coupling energy of a second frequency range radiated by the antenna. 3. The nonlinear component according to claim 2, wherein the two capacitors included in the first filter device are a first capacitor and a second capacitor, wherein the first capacitor includes a first terminal and a second capacitor. two terminals, the second capacitor includes a first terminal and a second terminal; When the first filtering device is in an enabled state, the power supply pin is connected to the first end of the first capacitor, and the second end of the first capacitor is grounded; and the clock pin is connected to the the first end of the second capacitor, and the second end of the second capacitor is grounded. 4. The nonlinear component according to claim 2, wherein the two inductors included in the first filter device are a first inductor and a second inductor; When the first filter device is enabled, the power supply pin is connected to the first inductor, and the clock pin is connected to the second inductor. 5. The nonlinear component according to claim 2, wherein the two RLC parallel resonant circuits included in the first filter device are a first RLC parallel resonant circuit and a second RLC parallel resonant circuit, wherein the The first RLC parallel resonant circuit includes an input end and an output end, and the second RLC parallel resonant circuit includes an input end and an output end; When the first filter device is in an enabled state, the power supply pin is connected to the input terminal of the first RLC parallel resonant circuit, and the output terminal of the first RLC parallel resonant circuit is grounded; and, the clock The pin is connected to the input end of the second RLC parallel resonant circuit, and the output end of the second RLC parallel resonant circuit is grounded. 6. The nonlinear component according to claim 2, wherein the two RLC series resonant circuits included in the first filter device are a first RLC series resonant circuit and a second RLC series resonant circuit; When the first filter device is enabled, the power supply pin is connected to the first RLC series resonant circuit, and the clock pin is connected to the second RLC series resonant circuit. 7. The nonlinear component according to any one of claims 2 to 6, wherein, when the antenna works in the GSM900 frequency band of the Global Communications System, the first frequency range includes 890Mhz to 915Mhz, and the The second frequency range includes 935Mhz˜960Mhz. 8. A circuit board structure, characterized in that the circuit board structure comprises a main board and the nonlinear component according to any one of claims 1-7. 9. The circuit board structure according to claim 8, characterized in that, the circuit board structure further comprises a flexible circuit board (FPC), and the FPC is used for connecting the main board and the nonlinear component. 10. The circuit board structure according to claim 9, wherein when the FPC is close to the clearance zone of the antenna, the filter device in the nonlinear component is located between the FPC and the motherboard. or, the filter device is located at the connection between the FPC and the nonlinear device; or, the filter device is located in the middle of the FPC. 11. An electronic device, characterized in that the electronic device comprises an antenna and the circuit board structure according to any one of claims 8-10. 12 . The electronic device according to claim 11 , further comprising a back cover, and the antenna is disposed on an inner surface of the back cover. 13 . 13 . The electronic device according to claim 12 , wherein a plurality of slits are formed on the rear cover corresponding to the position of the antenna to form a clearance area of the antenna. 14 .

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