CN108011192B

CN108011192B - Nonlinear assembly, circuit board structure and terminal equipment

Info

Publication number: CN108011192B
Application number: CN201711247645.5A
Authority: CN
Inventors: 杨怀; 伏奎
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-11-30
Filing date: 2017-11-30
Publication date: 2021-03-12
Anticipated expiration: 2037-11-30
Also published as: CN108011192A

Abstract

The embodiment of the application relates to the technical field of terminals and discloses a nonlinear assembly, a circuit board structure and terminal equipment. The nonlinear component is applied to a terminal device with an antenna, and the nonlinear component is located in a clearance area of the antenna; the nonlinear component comprises a nonlinear device and a filter device, and the nonlinear device is connected with the filter device; 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 nonlinear component, the circuit board structure and the terminal equipment 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.

Description

Nonlinear assembly, circuit board structure and terminal equipment

Technical Field

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

Background

The radiated stray is used as a mandatory authentication index of the electronic equipment, and is a difficult problem which is most complex and difficult to solve in all authentications. 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 GSM900 is easily out of standard, and the second or third harmonic of GSM 1800 is out of standard.

For radio frequency signals, the transmitted signal will not only contain the usable signal (e.g., GSM 900), but often will also contain second (1800 GHz)/third harmonic components (2700 GHz). 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, the energy of the higher harmonic is radiated, resulting in the spurious radiation exceeding the standard.

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

Disclosure of Invention

The embodiment of the application provides a nonlinear assembly, a circuit board structure and terminal equipment, 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, where the nonlinear component is applied to a terminal device having an antenna, and the nonlinear component is located in a headroom region of the antenna; the nonlinear component comprises a nonlinear device and a filter device, and the nonlinear device is connected with the filter device; 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.

In a second aspect, embodiments of the present application provide 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 further provides a terminal device, where the terminal device includes an antenna, and the nonlinear device and the filter device described in the first aspect.

The nonlinear component, the circuit board structure and the terminal equipment 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 a terminal device disclosed in an embodiment of the present application;

fig. 2A is a block diagram of a terminal device disclosed in the embodiment of the present application;

fig. 2B is a schematic back view of a terminal device disclosed in the embodiment of the present application;

FIG. 3 is a schematic diagram of a nonlinear device and a filter device according to an embodiment of the disclosure;

FIG. 4 is a schematic diagram of another linear device and filter device connection relationship disclosed in the embodiments of the present application;

FIG. 5 is a schematic diagram of another linear device and filter device connection relationship disclosed in the embodiments of the present application;

FIG. 6 is a schematic diagram of another linear device and filter device connection relationship disclosed in the embodiments 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 according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a terminal device disclosed in an 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 terminal equipment, can avoid near the antenna nonlinear device coupling antenna radiation's energy 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 below.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a terminal device 100 according to an embodiment of the present disclosure. As shown in fig. 1, the terminal 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 located in a 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 combinations of devices in the terminal equipment, for example, a photosensitive component in a camera, a fingerprint support of a fingerprint sensor, and the like. 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 located in the clearance area of the antenna, when the antenna is transmitting radio frequency signals, 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 transmitted 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 a terminal device 200 according to an embodiment of the present disclosure. As shown in fig. 2A, the terminal 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 to this, the terminal device 200 includes an antenna, which is not shown in fig. 2A. Wherein the non-linear device 10 is located in 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, 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 with a conductive wire connecting the nonlinear device 10 with other components in the terminal equipment.

Therefore, the terminal 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 higher harmonics, and the higher harmonics are conducted to the antenna and then transmitted together with the radio frequency signal; therefore, the terminal equipment 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, and an enable pin 13; the filter device 20 filters out the target energy to be conducted to the nonlinear device 10 by the power supply pin 11, the clock pin 12 and/or the enable pin 13.

In the embodiment of the present application, the terminal device 200 may further include a main board 30, and the nonlinear device 10 is connected to the main board 30 through the filter device 20; the main plate 30 may include a first end 31, a second end 32, and a third end 33.

In this embodiment, the terminal 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 in the clearance area of the antenna, the FPC for connecting the non-linear device 10 and the main board 30 is also located in the clearance area of the antenna, and often "crosses" the antenna to connect the non-linear device 10 and the main board 30, i.e. the perpendicular projection of the FPC intersects with the antenna.

Therefore, due to the position of the FPC, the FPC couples the energy radiated by the antenna and conducts the coupled energy to the nonlinear device 10, which causes the nonlinear device 10 to generate higher harmonics, thereby causing the 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 terminal 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. 2B, fig. 2B is a schematic back view of a terminal device according to an embodiment of the present 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.

As an alternative implementation, the filter device 20 may include a first capacitor 201, a second capacitor 202, and a third capacitor 203. The first capacitor 201 includes a first terminal 2011 and a second terminal 2012, the second capacitor 202 includes a first terminal 2021 and a second terminal 2022, and the third capacitor 203 includes a first terminal 2031 and a second terminal 2032. In this embodiment, the nonlinear device 10 and the filter device 20 are connected as shown in fig. 3.

As shown in fig. 3, the power pin 11 is connected to a first terminal 2011 of the first capacitor 201, and a 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; the enable pin 13 is connected to the first terminal 2031 of the third capacitor 203, and the second terminal 2032 of the third capacitor 203 is grounded.

As an alternative embodiment, when the antenna operates in the GSM900 frequency band, in order to avoid that the energy radiated by the antenna is coupled to the nonlinear device 10, which results in the nonlinear device 10 generating 2700MHz higher harmonics, the capacitance values of the first capacitor 201, the second capacitor 202 and the third capacitor 203 may be set to match the frequency of 900MHz, so as to filter the energy of the GSM900 conducted to the nonlinear device 10, and avoid the nonlinear device 10 generating higher harmonics.

As another alternative, the filter device 20 may include a first inductor 204, a second inductor 205, and a third inductor 206. In this embodiment, the nonlinear device 10 and the filter device 20 are connected as shown in fig. 4.

As shown in fig. 4, the power pin 11 is connected to the first terminal 31 of the motherboard 30 through the first inductor 204, the clock pin 12 is connected to the second terminal 32 of the motherboard 30 through the second inductor 205, and the clock pin 13 is connected to the third terminal 33 of the motherboard 30 through the third inductor 206.

As an alternative embodiment, when the antenna operates in the GSM900 frequency band, in order to avoid the energy radiated by the antenna from being coupled to the nonlinear device 10 and causing the nonlinear device 10 to generate 2700MHz higher harmonics, the capacitance values of the first inductor 204, the second inductor 205, and the third inductor 206 may be set to match the frequency of 900MHz, so as to filter the energy of the GSM900 conducted to the nonlinear device 10 and prevent the nonlinear device 10 from generating higher harmonics.

As another alternative embodiment, the filter device 20 may include a first RLC parallel resonant circuit 207, a second RLC parallel resonant circuit 208, and a third RLC parallel resonant circuit 209. The first RLC parallel resonant circuit 207 comprises an input 2071 and an output 2072, the second parallel resonant circuit 208 comprises an input 2081 and an output 2082, and the third RLC parallel resonant circuit 209 comprises an input 2091 and an output 2092. In this embodiment, the nonlinear device 10 and the filter device 20 are connected as shown in fig. 5.

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 end 2081 of the second parallel resonant circuit 208, and an output end 2082 of the second parallel resonant circuit 208 is grounded; the enable pin 13 is connected to an input 2091 of the third RLC parallel resonant circuit 209, and an output 2092 of the third RLC parallel resonant circuit 209 is connected to ground.

As an alternative embodiment, when the antenna operates in the GSM900 frequency band, in order to avoid the nonlinear device 10 from generating 2700MHz high order harmonics due to the coupling of the energy radiated by the antenna to the nonlinear device 10, the capacitances, resistances and inductances of the first RLC parallel resonant circuit 207, the second RLC parallel resonant circuit 208 and the third RLC parallel resonant circuit 209 may be set so that the resonant circuits are matched to the frequency of 900MHz, thereby filtering out the energy of the GSM900 that will be transmitted to the nonlinear device 10 and preventing the nonlinear device 10 from generating high order harmonics.

As another alternative embodiment, the filter device 20 may include a first RLC series resonant circuit 210, a second RLC series resonant circuit 211, and a third RLC series resonant circuit 212. In this embodiment, the nonlinear device 10 and the filter device 20 are connected as shown in fig. 6.

As shown in fig. 6, the power pin 11 is connected to the first terminal 31 of the main board 30 via the first RLC series resonant circuit 210, the clock pin 12 is connected to the second terminal 32 of the main board 30 via the second RLC series resonant circuit 211, and the clock pin 13 is connected to the third terminal 33 of the main board 30 via the third RLC series resonant circuit 212.

As an alternative embodiment, when the antenna operates in the GSM900 frequency band, in order to avoid the energy radiated by the antenna from being coupled to the nonlinear device 10 and causing the nonlinear device 10 to generate 2700MHz high harmonics, the capacitances, resistances and inductances of the first RLC series resonant circuit 210, the second RLC series resonant circuit 211 and the third RLC series resonant circuit 212 may be set so that the resonant circuits are matched to the frequency of 900MHz, so as to filter the energy of the GSM900 that will be transmitted to the nonlinear device 10 and prevent the nonlinear device 10 from generating high harmonics.

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 and a filter device 20, and the nonlinear device 10 is connected to the filter device 20. The nonlinear component 700 can be applied to a terminal device having an antenna, and the nonlinear component 700 is located in a headroom region of the antenna.

For the connection relationship between the nonlinear device 10 and the filter device 20, reference may be made to the specific description of the embodiments corresponding to fig. 3 to fig. 6, which is not repeated herein.

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 and a filter device, and 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. In particular, the filter device filters out target energy to be conducted to the nonlinear device, the target energy being energy radiated by an antenna coupled to a conductive wire connecting the nonlinear device with other components in the terminal device.

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

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 terminal device, as shown in fig. 9, fig. 9 is a schematic structural diagram of another terminal device disclosed in the present application. For convenience of explanation, only portions related to the embodiments of the present application are shown. The terminal device may be any terminal device such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a vehicle-mounted computer, taking the terminal device as a mobile phone as an example:

fig. 9 is a block diagram illustrating a partial structure of a mobile phone related to a terminal 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. 9 is not intended to be limiting and may include more or fewer components than those 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 910 in the embodiment of the present application implements amplification and transmission of carrier signals with multiple different frequencies through one amplifier, and can save the number of power amplifiers used and material cost during carrier aggregation.

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 can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the core concepts 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 a terminal device having an antenna, and wherein the nonlinear component is located in a headroom region of the antenna; the nonlinear component comprises a nonlinear device and a filter device, and the nonlinear device is connected with the filter device; 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 nonlinear device comprises a power supply pin and a clock pin; the filter device includes: the circuit comprises a first capacitor and a second capacitor, wherein the first capacitor comprises a first end and a second end, and the second capacitor comprises a first end and a second end;

the nonlinear device is connected with the filter device and comprises:

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.

2. The nonlinear assembly in accordance with claim 1, wherein the nonlinear device further comprises an enable pin; the filter device further comprises a third capacitor, wherein the third capacitor comprises a first end and a second end;

the nonlinear device is connected with the filter device, and further comprises:

the enable pin is connected with the first end of the third capacitor, and the second end of the third capacitor is grounded.

3. The nonlinear component according to any one of claims 1 to 2, wherein the filter device is configured to prevent the nonlinear component from generating higher harmonics with a frequency of 2700MHz when the antenna outputs a radio frequency signal in a GSM900 frequency band of a global system for communications.

4. A nonlinear component, wherein the nonlinear component is applied to a terminal device having an antenna, and wherein the nonlinear component is located in a headroom region of the antenna; the nonlinear component comprises a nonlinear device and a filter device, and the nonlinear device is connected with the filter device; 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 nonlinear device comprises a power supply pin and a clock pin; the filter device includes: a first inductor and a second inductor;

the nonlinear device is connected with the filter device and comprises:

the power supply pin is connected with the first inductor, and the clock pin is connected with the second inductor.

5. The nonlinear assembly in accordance with claim 4, wherein the nonlinear device further comprises an enable pin; the filter device further comprises a third inductor;

the enable pin is connected with the third inductor.

6. The nonlinear component according to any one of claims 4 to 5, wherein the filter device is configured to prevent the nonlinear component from generating higher harmonics with a frequency of 2700MHz when the antenna outputs radio frequency signals in a GSM900 frequency band.

7. A nonlinear component, wherein the nonlinear component is applied to a terminal device having an antenna, and wherein the nonlinear component is located in a headroom region of the antenna; the nonlinear component comprises a nonlinear device and a filter device, and the nonlinear device is connected with the filter device; 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 nonlinear device comprises a power supply pin and a clock pin; the filter device includes: the device comprises a first RLC parallel resonant circuit and a second RLC parallel resonant circuit, wherein the first RLC parallel resonant circuit comprises an input end and an output end, and the second RLC parallel resonant circuit comprises an input end and an output end;

the nonlinear device is connected with the filter device and comprises:

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.

8. The nonlinear assembly in accordance with claim 7, wherein the nonlinear device further comprises an enable pin; the filter device also comprises a third RLC parallel resonant circuit, and the third RLC parallel resonant circuit comprises an input end and an output end;

the enable pin is connected with the input end of the third RLC parallel resonant circuit, and the output end of the third RLC parallel resonant circuit is grounded.

9. The nonlinear component according to any one of claims 7 to 8, wherein the filter device is configured to prevent the nonlinear component from generating higher harmonics with a frequency of 2700MHz when the antenna outputs a radio frequency signal in a GSM900 frequency band of a global system for communications.

10. A nonlinear component, wherein the nonlinear component is applied to a terminal device having an antenna, and wherein the nonlinear component is located in a headroom region of the antenna; the nonlinear component comprises a nonlinear device and a filter device, and the nonlinear device is connected with the filter device; 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 nonlinear device comprises a power supply pin and a clock pin; the filter device includes: the first RLC series resonant circuit and the second RLC series resonant circuit;

the nonlinear device is connected with the filter device and comprises:

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.

11. The nonlinear assembly in accordance with claim 10, wherein the nonlinear device further comprises an enable pin; the filter device further comprises a third RLC series resonant circuit;

the enable pin is connected to the third RLC series resonant circuit.

12. The nonlinear component of claim 10, wherein the filter device is configured to prevent the nonlinear component from generating higher harmonics having a frequency of 2700MHz when the antenna outputs a radio frequency signal in a GSM900 band.

13. The nonlinear component of claim 11, wherein the filter device is configured to prevent the nonlinear component from generating higher harmonics having a frequency of 2700MHz when the antenna outputs a radio frequency signal in a GSM900 band.

14. 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 to 13.

15. The circuit-board structure according to claim 14, characterized in that it further comprises a flexible circuit board, FPC, for connecting the main board with the non-linear assembly.

16. The circuit board structure of claim 15, wherein the FPC is located in a clearance area of the antenna.

17. The circuit board structure according to claim 16, characterized in that the filter device in the non-linear assembly is located at the connection of the FPC with the main board, with the FPC located in the headroom of the antenna; or the filter device is positioned at the connection position of the FPC and the nonlinear device; or the filter device is positioned in the middle of the FPC.

18. A terminal device, characterized in that the terminal device comprises an antenna, a non-linear device as claimed in any one of claims 1 to 13 and a filter device as claimed in any one of claims 1 to 13.

19. The terminal device according to claim 18, further comprising a flexible circuit board FPC and a main board; the FPC is used for connecting the nonlinear device and the main board; the FPC is located in a clearance area of the antenna.

20. A terminal device according to claim 19, wherein the filter means is located at the connection of the FPC to the main board; or the filter device is positioned at the connection position of the FPC and the nonlinear device; or the filter device is positioned in the middle of the FPC.

21. The terminal device according to any one of claims 18 to 20, further comprising a back cover, wherein the antenna is disposed on an inner surface of the back cover.

22. The terminal device of claim 21, wherein the rear cover has a plurality of slots corresponding to the positions of the antennas to form clearance areas of the antennas.

23. The terminal device according to claim 22, wherein the plurality of slots are parallel to each other, and an insulating material is filled between two adjacent slots.