CN108258421B

CN108258421B - Nonlinear assembly, circuit board structure and electronic device

Info

Publication number: CN108258421B
Application number: CN201810052103.0A
Authority: CN
Inventors: 杨怀
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-01-18
Filing date: 2018-01-18
Publication date: 2023-02-14
Anticipated expiration: 2038-01-18
Also published as: CN108258421A

Abstract

The embodiment of the application relates to the technical field of terminals and discloses a nonlinear assembly, a circuit board structure and an electronic device. The nonlinear component is applied to an electronic device with an antenna, and the nonlinear component is arranged close to a clearance area of the antenna; the nonlinear component comprises a nonlinear device, a first filter device, a second filter device and a controller; the first filter device is used for preventing the energy radiated by the antenna from being coupled to the nonlinear device under the condition that the antenna carries out uplink transmission; the second filter device is used for preventing the energy radiated by the antenna from being coupled to the nonlinear device under the condition that the antenna carries out downlink transmission; the controller is used for controlling the first filter device to be in an enabling state under the condition that the antenna carries out uplink transmission; and/or controlling the second filter device to be in an enabling state under the condition that the antenna carries out downlink receiving. By implementing the embodiment of the application, the cause of antenna radiation stray can be eliminated from the source, and the radiation performance of the antenna is improved.

Description

Nonlinear assembly, circuit board structure and electronic device

Technical Field

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

Background

The radiation stray is a difficult problem which is the most complex and difficult to solve in all certifications as a mandatory certification index of electronic equipment. Especially for Global System for Mobile Communication (GSM) frequency band, because its own power is very high, it is easy to excite strong energy instantaneously to cause the harmonic wave of radiation stray to exceed standard. In practical use, the third harmonic of the GSM900 is easily out of standard, and the second harmonic or the third harmonic of the GSM 1800 is out of standard.

For radio frequency signals, the transmitted signal will not only contain a usable signal (e.g., GSM 900), but often will also contain second (1800 MHz)/third harmonic components (2700 MHz). In practical application, the third harmonic mainly exceeds the standard. Similarly, when the third harmonic energy of the rf signal reaches the third resonance of the antenna, it will radiate the energy of these higher harmonics, resulting in spurious emissions.

Therefore, how to improve the radiation stray condition of the electronic device becomes a problem to be solved urgently.

Disclosure of Invention

The embodiment of the application provides a nonlinear component, a circuit board structure and an electronic device, which can effectively reduce the influence of a nonlinear device close to an antenna on the radiation performance of the antenna.

In a first aspect, an embodiment of the present application provides a nonlinear component, which is applied to an electronic device having an antenna, and is disposed adjacent to a headroom area of the antenna; the nonlinear component comprises a nonlinear device, a filter device and a controller, the nonlinear device is connected with the filter device, and the filter device is connected with the controller;

the filter device is used for preventing the energy radiated by the antenna from being coupled to the nonlinear device to cause the nonlinear device to generate higher harmonics; the filter device comprises a first filter device and a second filter device;

the controller is used for controlling the first filter device to be in an enabling state under the condition that the antenna carries out uplink transmission; and/or controlling the second filter device to be in an enabling state under the condition that the antenna carries out downlink receiving.

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

The nonlinear component, the circuit board structure and the electronic device provided by the embodiment of the application can avoid the energy radiated by the nonlinear device coupling antenna near the antenna and generate higher harmonics to be conducted to the antenna, so that the antenna generates radiation stray, thereby eliminating the reason of partial antenna radiation stray from the source and improving the radiation performance of the antenna.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

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

fig. 2A is a block diagram of an electronic device according to an embodiment of the disclosure;

fig. 2B is a block diagram of another electronic device disclosed in the embodiments of the present application;

fig. 2C is a schematic backside view of an electronic device according to an embodiment of the disclosure;

fig. 3 is a detailed structural diagram of an electronic device according to an embodiment of the disclosure;

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

FIG. 5 is a diagram illustrating a detailed structure of another electronic device according to an embodiment of the disclosure;

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

FIG. 7 is a block diagram of a non-linear component according to an embodiment of the present disclosure;

fig. 8 is a 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 the embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be understood that the terms "thickness" and the like refer to an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, which is only for convenience of description and simplification of the description, and does not imply or indicate that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be interpreted as limiting the application, and the first and second are only for distinguishing one specific object and are not specifically referred to.

The embodiment of the application provides a nonlinear component and an electronic device, can avoid the energy of the near nonlinear device coupling antenna radiation of antenna and produce the higher harmonic and conduct the antenna, make the antenna produce the radiation stray to eliminate some antenna radiation stray's cause from the source, improve the radiation performance of antenna. The following are detailed descriptions.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device 100 according to an embodiment of the disclosure. As shown in fig. 1, an electronic device 100 includes an antenna 101, a Flexible Printed Circuit (FPC) 102, a nonlinear device 103, and a main board 104. The FPC 102 and the nonlinear device 103 are both disposed near the clearance area of the antenna 101, and the nonlinear device 103 and the main board 104 are connected through the FPC 102.

In particular, the non-linear device 103 may be a variety of devices and combinations of devices in an electronic device, such as a light-sensitive component in a camera, a fingerprint support of a fingerprint sensor, and so forth. And antenna 101 may be a main set antenna or a diversity wire.

In the embodiment of the application, because the nonlinear device 103 and the FPC 102 are arranged close to the clearance area of the antenna, when the antenna is transmitting radio frequency signals, the energy of the radio frequency signals is radiated through the antenna, and the FPC 102 serves as a main carrier of coupling energy around the antenna, and conducts the energy of the coupled radio frequency signals to the nonlinear device 103; the nonlinear device 103 converts the energy of the obtained radio frequency signal into a second harmonic and a third harmonic, and then the higher harmonics are conducted to the antenna and radiated out along with the radio frequency signal, so that the radiated stray exceeds the standard.

In radio frequency signals transmitted by an antenna, particularly for a GSM frequency band, due to the fact that the power of the radio frequency signals is high, stray radiation exceeding standards is easily caused by high-intensity energy which is excited instantly; in practical application, the radiation stray exceeding of the third harmonic is the most likely to occur. Thus, there is a need for a method to suppress the third harmonic radiation over-standard of GSM900 due to non-linear devices close to the antenna.

Referring to fig. 2A, fig. 2A is a block diagram of an electronic device 200 according to an embodiment of the disclosure. As shown in fig. 2A, the electronic device 200 includes a nonlinear device 10 and a filter device 20. The non-linear device 10 and the filter device 20 may also constitute a non-linear component, the details of which will be described in detail in the embodiment corresponding to fig. 7. In addition, the electronic device 200 comprises an antenna, which is not shown in fig. 2. Wherein the non-linear device 10 is arranged adjacent to the free space of the antenna and the non-linear device 10 is connected to the filter device 20.

In the embodiment of the present application, the filter 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. In particular, the filter device 20 filters out the target energy to be conducted to the nonlinear device 10, which is the energy radiated by an antenna coupled to a conductive wire connecting the nonlinear device 10 with other components in the electronic apparatus.

Therefore, the electronic device depicted 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 higher harmonics, and the higher harmonics are conducted to the antenna and then transmitted together with the radio frequency signal; therefore, the electronic device can improve the radiation stray condition and improve the radiation performance of the antenna.

Further, referring to fig. 2B, fig. 2B is a block diagram of another electronic device 200 according to an embodiment of the disclosure. As shown in fig. 2B, the filter device 20 includes a first filter device 21 and a second filter device 22, and the electronic apparatus 200 further includes a controller 40;

the controller 40 is configured 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 for controlling the second filter 22 to be in an enabling state under the condition that the antenna performs downlink reception.

Specifically, the controller 40 may include a single-pole double-throw switch that 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 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 application, the first filter device 21 is used to prevent the nonlinear device 10 from coupling energy of the first frequency range, and the second filter device 22 is used to prevent the nonlinear device 10 from coupling energy of the second frequency range.

Specifically, the working frequency band of the global system for mobile communications GSM900 is 890 to 960MHz, where the frequency points used by different operators are different; for example, uplink/downlink of china mobile are: 890-909/935-954MHz, uplink/downlink of China Unicom are respectively: 909-915/954-960MHz. Since the frequency band used by the uplink transmission and the frequency band used by the downlink reception of the electronic device are different, the first filter device 21 and the second filter device 22 can filter the uplink transmission and the downlink reception respectively, so as to accurately filter the energy that may be conducted to the nonlinear device 10, and avoid radiation stray caused by the energy leaked by the coupling antenna when performing the uplink transmission or the uplink reception in the nonlinear device 10.

Thus, since the first filter device 21 is enabled in the case of uplink transmission by the antenna, the first frequency range of filtering thereof may be an uplink frequency band, i.e., a frequency range including 890Mhz to 915 Mhz; accordingly, the second frequency range filtered by second filter device 22 may be the downstream frequency band, i.e., the frequency range including 935Mhz to 960Mhz.

Therefore, by using the electronic device described in fig. 2B, different filtering devices can be used for filtering in the uplink transmission and downlink reception processes, so that the effective degree of the filtering operation is improved, and thus, the situation that the nonlinear device generates higher harmonics due to the fact that the energy radiated by the antenna is coupled to the nonlinear device is effectively prevented, and the higher harmonics are conducted to the antenna and then transmitted together with the radio frequency signal; therefore, the electronic device can improve the radiation stray condition and improve the radiation performance of the antenna.

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

In the embodiment of the present application, the electronic apparatus 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 plate 30 may include a first end 31, a second end 32.

In the embodiment of the present application, the electronic device 200 may further include a Flexible Printed Circuit (FPC). The FPC is used to connect the nonlinear device 10 and the main board 30. As can be seen from fig. 1, if the non-linear device 10 is located close to the free space of the antenna, the FPC for connecting the non-linear device 10 to the main board 30 is also located close to the free space of the antenna, and often "crosses" the antenna to connect the non-linear device 10 to the main board 30, i.e. the perpendicular projection of the FPC intersects the antenna.

Therefore, due to the position of the FPC, the FPC couples the energy radiated from the antenna and conducts the coupled energy to the nonlinear device 10, which causes the nonlinear device 10 to generate higher harmonics, which in turn causes spurious radiation to exceed the standard.

Therefore, as an alternative embodiment, the filter device 20 may be located at the connection of the FPC to the main board 30, or at the connection of the FPC to the nonlinear device 10; alternatively, the filter device 20 may be attached to one side of the flexible circuit board by Surface Mount Technology (SMT). Thus, the FPC can be filtered before conducting the coupling energy to the nonlinear device 10, and the problem of excessive radiation stray is solved.

As an alternative embodiment, the electronic device 200 may further include a rear cover 50, and the rear cover 50 may include a frame and a battery cover; the rear cover 50 has a receiving cavity in which the nonlinear device 10, the filter device 20, the main board 30, and the FPC may be disposed, and the antenna may be disposed on an inner surface of the rear cover 50.

Referring to fig. 2C, fig. 2C is a schematic back view of an electronic device according to an embodiment of the disclosure. As an alternative embodiment, the rear cover 50 has a plurality of slots 51 corresponding to the positions of the antennas, so as to form a clearance area on the rear cover 50 for receiving and transmitting signals of the antennas. The plurality of slits are parallel slits, and an insulating material such as a resin material or glue is filled between two adjacent slits to enhance the strength of the rear cover 50.

In an alternative embodiment, the plurality of slits 51 are micro slits, the slit width is 0.05mm, 0.3mm, or any value from 0.05mm to 0.3mm, and the number of the plurality of slits 51 is 5, 10, or any number from 5 to 10. Wherein, the seam width of the micro-seam is larger than 0.05mm, which can ensure that the micro-seam can not be directly distinguished by the user and ensure the lowest radio frequency efficiency of the rear cover 50; on the other hand, the seam width of the micro-seam is not more than 0.3mm, so that the micro-seam can not be identified by the user on naked eyes, and the radio frequency efficiency of the rear cover 50 is improved. Also, the number of micro-slits is controlled to be 5 at minimum to ensure the radiation performance of the back cover 50, and the number of micro-slits is controlled to be 10 at maximum to ensure the appearance requirement of the back cover 50.

Hereinafter, the structure of the first filter device 21 will be described in detail. It will be appreciated that the second filter device 22 may have a similar or identical structure for the same purpose of filtering; however, since the frequency range of the energy mainly filtered by the first filter 21 is different from that of the energy mainly filtered by the second filter 22, the capacitance, resistance and/or inductance of the two components are different.

As an alternative implementation, 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. With the first filter device 21 in the enabled state, please refer to fig. 3, fig. 3 is a schematic structural diagram of another electronic apparatus disclosed in the embodiment of the present application, and fig. 3 shows an example of a connection relationship between the nonlinear device 10 and the first filter device 21.

As shown in fig. 3, the power 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 end 2021 of the second capacitor 202, and the second end 2022 of the second capacitor 202 is grounded.

As another alternative, the first filter device 21 may include a first inductor 204 and a second inductor 205. Referring to fig. 4, fig. 4 is a schematic structural diagram of another electronic apparatus disclosed in the embodiment of the present application when the first filter device 21 is in an enabled state, and referring to fig. 4, a connection relationship between the nonlinear device 10 and the first filter device 21 is shown.

As shown in fig. 4, the power pin 11 is connected to the first terminal 31 of the motherboard 30 via the first inductor 204, and the clock pin 12 is connected to the second terminal 32 of the motherboard 30 via the second inductor 205.

As another alternative embodiment, 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 resonant circuit 207 includes an input 2071 and an output 2072 and the second parallel resonant circuit 208 includes an input 2081 and an output 2082. Referring to fig. 5, fig. 5 is a schematic structural diagram of another electronic apparatus disclosed in the embodiment of the present application, and a connection relationship between the nonlinear device 10 and the first filter device 21 is shown in fig. 5 when the first filter device 21 is in an enabled state.

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

As another alternative embodiment, the first filter device 21 may include a first RLC series resonant circuit 210 and a second RLC series resonant circuit 211. Referring to fig. 6, fig. 6 is a schematic structural diagram of another electronic apparatus disclosed in the embodiment of the present application when the first filter device 21 is in an enabled state, and referring to fig. 6, a connection relationship between the nonlinear device 10 and the first filter device 21 is shown.

As shown in fig. 6, the power supply pin 11 is connected to the first end 31 of the main board 30 via a first RLC series resonant circuit 210, and the clock pin 12 is connected to the second end 32 of the main board 30 via a second RLC series resonant circuit 211.

Referring to fig. 7, fig. 7 is a block diagram of a non-linear component 700 according to an embodiment of the present disclosure. 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. The non-linear element 700 can be applied to an electronic device having an antenna, and the non-linear element 700 is disposed adjacent to a clearance area of the antenna.

In the embodiment of the present application, the filter device 20 is used to prevent the energy radiated by the antenna from being coupled to the nonlinear device 10, which causes the nonlinear device to generate higher harmonics. In particular, the filter device 20 filters out the target energy to be conducted to the nonlinear device 10, which is the energy radiated by an antenna coupled to a conductive wire connecting the nonlinear device 10 to other components in the electronic device.

In this embodiment, the filter device 20 may include a first filter device 21 and a second filter device 22, and the controller 40 is configured to control the first filter device 21 to be in an enabling state under the condition that the antenna performs uplink transmission, and also control the second filter device 22 to be in an enabling state under the condition that the antenna performs downlink reception.

The connection relationship between the nonlinear device 10 and the first filter device 21 may specifically refer to the specific description of the embodiment corresponding to fig. 3 to fig. 6, and is not repeated herein. It should be noted that, in the case where the second filter device 22 is in the enabled state, the connection relationship between the second filter device 22 and the nonlinear device 10 may be set with reference to the connection relationship between the first filter device 21 and the nonlinear device 10.

Therefore, the nonlinear component described in fig. 7 can prevent the energy radiated by the antenna from being coupled to the nonlinear device to cause the nonlinear device to generate higher harmonics, and the higher harmonics are conducted to the antenna and then transmitted together with the radio frequency signal; therefore, the nonlinear component can improve the radiation stray condition and improve the radiation performance of the antenna.

Referring to fig. 8, fig. 8 is a block diagram of a circuit board structure according to an embodiment of the present disclosure. As shown in fig. 8, the circuit board structure 800 includes a main board 801 and a non-linear module 802, wherein the main board 801 is connected to the non-linear module 802.

In this embodiment, the nonlinear component 802 may include a nonlinear device, a filter device, and a controller, wherein the filter device is configured to prevent the nonlinear device from generating higher harmonics due to coupling of energy radiated by the antenna to the nonlinear device. The filter device comprises a first filter device and a second filter device;

The connection relationship between the nonlinear device and the first filter device or the second filter device may specifically refer to the specific description of the embodiments corresponding to fig. 3 to fig. 6, and is not repeated here.

Therefore, the circuit board structure described in fig. 8 can prevent the nonlinear device from generating higher harmonics due to the coupling of the energy radiated by the antenna to the nonlinear device, and the higher harmonics are conducted to the antenna and then transmitted together with the radio frequency signal; therefore, the nonlinear component can improve the radiation stray condition and improve the radiation performance of the antenna.

An embodiment of the present application further provides another electronic device, as shown in fig. 9, fig. 9 is a schematic structural diagram of another electronic device disclosed in the present application. For ease of illustration, only portions relevant to the embodiments of the present application are shown. The electronic device may be any electronic device such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), and a vehicle-mounted computer, taking the electronic device as a mobile phone as an example:

fig. 9 is a block diagram illustrating a partial structure of a mobile phone related to an electronic device provided in an embodiment of the present application. Referring to fig. 9, the handset includes: radio Frequency (RF) circuitry 910, memory 920, processor 930, and power supply 940. Those skilled in the art will appreciate that the handset configuration shown in fig. 8 is not intended to be limiting and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile phone in detail with reference to fig. 9:

RF circuitry 910 may be used for the reception and transmission of information. In general, the RF circuit 910 includes, but is not limited to, an antenna, an Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 910 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), general Packet Radio Service (GPRS), code Division Multiple Access (CDMA), wideband Code Division Multiple Access (WCDMA), long Term Evolution (LTE), email, short Messaging Service (SMS), and the like. The radio frequency circuit 810 in the embodiment of the present application implements amplification and transmission of carrier signals of multiple different frequencies through one amplifier, and can save the number of power amplifiers used and material cost when carriers are aggregated.

The memory 920 may be used to store software programs and modules, and the processor 930 may execute various functional applications and data processing of the mobile phone by operating 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 for at least one function, and the like; the storage data area may store data created according to the use of the mobile phone, and the like. Further, the memory 920 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 930 is a control center of the mobile phone, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 920 and calling data stored in the memory 920, thereby performing overall monitoring of the mobile phone. Alternatively, processor 930 may include one or more processing units; preferably, the processor 930 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It is to be appreciated that the modem processor described above may not be integrated into processor 930.

The handset also includes a power supply 940 (e.g., a battery) for powering the various components, which may preferably be logically coupled to the processor 930 via a power management system to manage charging, discharging, and power consumption via the power management system.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.

The above embodiments are described in detail, and specific examples are applied herein to explain the principles and embodiments of the present application, and the description of the embodiments is only used to help understand the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A nonlinear component, wherein the nonlinear component is applied to an electronic device having an antenna, and wherein the nonlinear component is disposed adjacent to a headroom region of the antenna; the nonlinear component comprises a nonlinear device, a first filter device, a second filter device and a controller;

the first filter device is configured to prevent energy radiated by the antenna from being coupled to the nonlinear device when the antenna performs uplink transmission, where the nonlinear component includes a power pin and a clock pin, and the first filter 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 pin and the clock pin of the nonlinear component;

the second filter device is used for preventing energy radiated by the antenna from being coupled to the nonlinear device under the condition that the antenna carries out downlink receiving, wherein the second filter device comprises two capacitors, or two inductors, or two RLC parallel resonant circuits, or two RLC series resonant circuits, and the two capacitors, or the two inductors, or the two RLC parallel resonant circuits, are also respectively connected with the power pin and the clock pin of the nonlinear component, the first filter device and the second filter device adopt the same structure, and capacitance values, resistance values and/or inductance values of adopted components are different;

2. The nonlinear component of claim 1, wherein the first filter device is configured to prevent the nonlinear component from coupling energy of a first frequency range radiated by the antenna;

the second filter device is configured to prevent the nonlinear device from coupling energy of a second frequency range radiated by the antenna.

3. The nonlinear component of claim 2, wherein the first filter device comprises two capacitors including a first capacitor and a second capacitor, wherein the first capacitor comprises a first terminal and a second terminal, and the second capacitor comprises a first terminal and a second terminal;

under the condition that the first filter device is in an enabling state, the power supply pin is connected with a first end of the first capacitor, and a second end of the first capacitor is grounded; and the clock pin is connected with the first end of the second capacitor, and the second end of the second capacitor is grounded.

4. The nonlinear component of claim 2, wherein the first filter device includes two inductors, a first inductor and a second inductor;

and under the condition that the first filter device is in an enabling state, the power supply pin is connected with the first inductor, and the clock pin is connected with the second inductor.

5. The nonlinear component of claim 2, wherein the first filter device comprises two RLC parallel resonant circuits, a first RLC parallel resonant circuit and a second RLC parallel resonant circuit, wherein the first RLC parallel resonant circuit comprises an input terminal and an output terminal, and the second RLC parallel resonant circuit comprises an input terminal and an output terminal;

under the condition that the first filter device is in an enabling state, the power supply pin is connected with the input end of the first RLC parallel resonant circuit, and the output end of the first RLC parallel resonant circuit is grounded; and the clock pin is connected with 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 in accordance with claim 2, wherein the first filter device includes two RLC series resonant circuits, a first RLC series resonant circuit and a second RLC series resonant circuit;

and under the condition that the first filter device is in an enabling state, the power supply pin is connected with the first RLC series resonant circuit, and the clock pin is connected with the second RLC series resonant circuit.

7. The nonlinear component in accordance with any one of claims 2 to 6, wherein the antenna operates in a global system for mobile communications (GSM) 900 frequency band, and wherein the first frequency range comprises 890Mhz to 915Mhz, and the second frequency range comprises 935Mhz to 960Mhz.

8. A circuit board structure, characterized in that it comprises a main board and a non-linear component according to any of claims 1 to 7.

9. The circuit-board structure according to claim 8, characterized in that it further comprises a flexible circuit board, FPC, for connecting the main board with the non-linear assembly.

10. The circuit board structure according to claim 9, wherein the filter device in the nonlinear component is located at a connection of the FPC and the main board in a state where the FPC is adjacent to a clearance area of the antenna; or the filter device is positioned at the connection part of the FPC and the nonlinear device; or the filter device is positioned in the middle of the FPC.

11. An electronic device, characterized in that the electronic device comprises an antenna and a circuit-board structure according to any of claims 8-10.

12. The electronic device of claim 11, further comprising a back cover, wherein the antenna is disposed on an inner surface of the back cover.

13. The electronic device of claim 12, wherein the rear cover has a plurality of slots corresponding to the position of the antenna to form a clearance area of the antenna.