CN114421155A

CN114421155A - Electronic equipment, side key FPC and processing method for eliminating antenna clutter

Info

Publication number: CN114421155A
Application number: CN202011171445.8A
Authority: CN
Inventors: 李君�; 丁瑒琛; 潘毓; 何毅; 周静
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2022-04-29
Also published as: WO2022088985A1

Abstract

The application relates to an electronic device, a side key FPC and a processing method for eliminating antenna clutter, wherein the electronic device comprises: a housing provided with a side key; the antenna is arranged on the shell; the side key FPC is connected with the side key and comprises a plate body and a wiring connected with the plate body; the wiring comprises a first wiring, the first wiring comprises a body line and a branch line, and the branch line is electrically connected with the body line and used for changing the electrical length of the first wiring so that the absorption frequency of the first wiring is located outside the working frequency band of the antenna. Through increasing the branch line at first line to increase the geometric length of first line, when geometric length changed, can change the electrical length of first line, make the electrical length of this first line mismatch with the working frequency channel of antenna (the frequency of the electromagnetic wave that first line absorbed does not match with the working frequency of antenna), thereby make first line can not absorb the energy in the antenna working frequency channel, the in-band performance of antenna is higher promptly.

Description

Electronic equipment, side key FPC and processing method for eliminating antenna clutter

Technical Field

The application relates to the technical field of electronic equipment, in particular to electronic equipment, a side key FPC and a processing method for eliminating antenna clutter.

Background

The communication technology is from 1G, 2G to 3G, 4G, 5G, from a functional machine to an intelligent machine, from a single frequency band to a multi-frequency band, and developed to the current 5G network, the number of antennas used in terminal communication is increased, the distribution of the antennas is compact, and in consideration of the balance of factors in various aspects such as cost, space, power consumption, antenna performance and the like, the mobile phone antenna can be arranged in the middle frame.

Disclosure of Invention

The application provides an electronic device, a side key FPC and a processing method for eliminating antenna clutter, which can improve the in-band performance of an antenna.

A first aspect of the present application provides an electronic device, including: a housing provided with a side key; an antenna disposed on the housing; the side key FPC is connected with the side key and comprises a plate body and a wiring connected with the plate body; the wires comprise a first wire, the first wire comprises a body wire and a branch wire, and the branch wire is electrically connected with the body wire and used for changing the electrical length of the first wire, so that the absorption frequency of the first wire is outside the working frequency band of the antenna.

In this application, through increasing the branch road line at first line of walking to increase the first geometric length of walking the line, when geometric length changed, can change the first electric length of walking the line, make this first electric length of walking the line mismatch with the working frequency channel of antenna (the first frequency of walking the line absorptive electromagnetic wave is unmatched with the working frequency of antenna), thereby make first line can not absorb the energy in the antenna working frequency channel, the in-band performance of antenna is higher promptly. Meanwhile, when the absorption of the side key FPC to the energy of the antenna is eliminated, the antenna is not required to be realized by adding elements such as capacitance and inductance on the side key FPC, but is realized by adding a branch line on the first antenna of the absorption antenna, and therefore the cost is saved. In addition, when the capacitor or the inductor is welded on the side key FPC, along with the increase of the pressing times of the side key, the connection reliability between the capacitor or the inductor and the side key FPC is reduced, so that the capacitor or the inductor can fall off, and the connection reliability between the body line and the branch line is higher in the application, so that the in-band performance of the antenna can be improved, and meanwhile, the service life of the antenna is prolonged.

In one possible design, one end of the branch line is used for electrically connecting with the body line, and the other end is a free end. In this scheme, the branch line is the open circuit line, and its effect is equivalent to electric capacity, consequently, increases the branch line back, can reduce the resonant frequency of first walking the line, i.e. makes the resonant frequency point of first walking the line move to the low frequency, and this moment, this first walking the line be difficult to take place the resonance with the antenna to prevent that first walking the line from absorbing the energy of antenna in the working frequency channel, improve the in-band performance of antenna. In addition, the capacitor arranged on the first wire is realized through the branch line, and a capacitor element does not need to be welded on the first wire, so that the cost is saved, and the reliability of the first wire is improved.

In one possible design, both ends of the branch line are used for electrically connecting with the body line. In this scheme, this branch line is the short circuit line, and this first line increases the branch line after, this branch line's effect is equivalent to setting up in the inductance of first line of walking, consequently, increase the branch line after, can reduce the resonant frequency of first line of walking, even make the resonant frequency point of first line of walking move to the low frequency, at this moment, this first line of walking is difficult to take place the resonance with the antenna to prevent that first line from absorbing the energy of antenna in the operating frequency channel, improve the in-band performance of antenna. In addition, the inductor arranged on the first wire is realized through the branch line, and an inductance element does not need to be welded on the first wire, so that the cost is saved, and the reliability of the first wire is improved.

In one possible design, the body line has an opening, and both ends of the branch line are respectively used for being electrically connected with both ends of the opening. At this moment, be equivalent to through the branch line with one section replacement that the opening of body line corresponds, when the length of branch line is different with the length of the line of opening both ends, the setting of this branch line can change the first geometric length of walking the line (increase the first geometric length of walking the line), thereby change the first electrical length of walking the line (increase the first electrical length of walking the line), and then make the electrical length of this first line mismatch with the working frequency channel of antenna, thereby make first line can not absorb the energy in the antenna working frequency channel, improve the in-band performance of antenna.

In one possible design, the branch line has a preset length configured to: the electrical length of the first trace can be made to not match the electrical length required to absorb the energy of the antenna. The body line through walking the line first sets up the branch line, can increase the electric length of this first line of walking, reduces the resonant frequency of first line of walking for the resonant frequency point of first line is to the low frequency removal, and at this moment, this first line of walking is difficult to take place the resonance with the antenna, thereby prevents that first line from absorbing the energy of antenna in the working frequency channel, improves the in-band performance of antenna.

In one possible design, the shape of the branch line includes one or more of a straight line, a curved line, a broken line, a spiral line, a serpentine line, and an irregular line.

In a possible design, along the thickness direction of the branch line, the branch line includes one or more layers of electrical connection units, so as to increase the geometric length of the branch line, and further increase the electrical length of the first wire, so that the electrical length of the first wire is not matched with the working frequency band of the antenna, and meanwhile, when the branch line includes the layers of electrical connection units along the thickness direction, the space of the branch line along the thickness direction can be reasonably utilized, so that the space of other directions occupied by the branch line is reduced, and the risk of interference between the branch line and other parts of the electronic device is reduced.

In one possible design, the body line is integrally formed with the branch line, or the body line is fixedly connected to the branch line. When the body line and the branch line are integrally formed, the reliability between the body line and the branch line is higher, and when the pressing times of the side key are increased, the branch line cannot fall off from the body line, so that the reliability and the service life of the side key FPC are improved, and the in-band performance of the antenna is effectively improved. When the body line is fixedly connected with the branch line, the body line and the branch line can be welded or adhered through conductive adhesive.

A second aspect of the present application provides an electronic device, comprising: a housing provided with a side key; an antenna disposed on the housing; the side key FPC is connected with the side key and comprises a plate body and a wiring connected with the plate body; the wiring comprises a first wiring, the first wiring comprises a body line and a wave-absorbing material arranged on the body line, and the wave-absorbing material is used for changing the electrical length of the first wiring so that the absorption frequency of the first wiring is located outside the working frequency band of the antenna.

In this scheme, after wave-absorbing material is add to first line, because wave-absorbing material has the effect of absorbing electromagnetic wave energy, can change the electric length of this first line of walking for the electric length of this first line is unmatched with the working frequency channel of antenna (the frequency of first line absorption electromagnetic wave frequency and the working frequency of antenna are unmatched), thereby makes first line can not absorb the energy in the antenna working frequency channel, and the in-band performance of antenna is higher promptly. Meanwhile, when the absorption of the side key FPC on the energy of the antenna in the working frequency band is eliminated, the absorption is realized in a mode that original elements such as capacitance and inductance are added to the side key FPC, and wave absorbing materials are added to the first antenna of the absorption antenna, so that the cost is saved.

In one possible design, the wave-absorbing material is adhered to the body wire.

In one possible design, the thickness of the wave-absorbing material is 0.2 mm-0.6 mm. When the thickness of the wave-absorbing material is 0.2 mm-0.6 mm, the first routing wire can not absorb the energy in the working frequency band of the antenna, the in-band performance of the antenna is ensured, and meanwhile, the waste of the wave-absorbing material can be reduced.

In one possible design, the wave-absorbing material covers the body wire.

In one possible design, the wave-absorbing material is disposed at a preset position of the body line, and the preset position is configured as follows: the body line absorbs the position of the antenna within the working frequency band. When the position of the first line that produces the clutter sets up absorbing material, can eliminate the clutter of this position, can change the electric length of first line promptly to make the position that should produce the clutter no longer absorb the energy of antenna in the working frequency channel, guarantee the in-band performance of antenna. Meanwhile, wave-absorbing materials do not need to be arranged at all positions of the first wiring, so that the wave-absorbing materials can be saved, and the cost is reduced.

In a possible design, the wave-absorbing material is disposed at a position of a clutter current strong point in the first trace.

In one possible design, the coverage area of the wave-absorbing material is configured as follows: the electrical length of the first trace can be mismatched with the electrical length required to absorb the energy of the antenna within the operating frequency band.

A third aspect of the present application provides a side key FPC, including a plate body and a first routing wire, where the first routing wire is connected to the plate body; the first routing line comprises a body line and a branch line, and the branch line is electrically connected with the body line.

In one possible design, one end of the branch line is used for electrically connecting with the body line, and the other end is a free end.

In one possible design, both ends of the branch line are used for electrically connecting with the body line.

A fourth aspect of the present application provides a side key FPC, including a plate body and a first routing wire, the first routing wire being connected to the plate body;

the first wire comprises a body wire and a wave-absorbing material arranged on the body wire, wherein the wave-absorbing material is used for changing the electrical length of the first wire, so that the absorption frequency of the first wire is positioned outside the working frequency band of the antenna.

In one possible design, the wave-absorbing material covers at least part of the body wire.

The fifth aspect of the present application provides a processing method for eliminating antenna clutter, for eliminating clutter of an antenna of an electronic device, the electronic device includes a side key FPC and an antenna, the side key FPC includes a connected plate body and a wiring, the processing method includes: judging a first routing for absorbing the energy of the antenna in the working frequency band; arranging a branch line on the first routing; the branch line is used for changing the electrical length of the first wire, so that the absorption frequency of the first wire is positioned outside the working frequency band of the antenna.

Therefore, by the processing method, the electrical length of the first wire can be changed, so that the electrical length of the first wire is not matched with the working frequency band of the antenna (the frequency of the electromagnetic wave absorbed by the first wire is not matched with the working frequency of the antenna), and the first wire does not absorb the energy of the antenna in the working frequency band, that is, the in-band performance of the antenna is high.

In one possible design, before the first trace sets the branch line, the processing method further includes: and judging and setting the preset position of the branch line according to the working frequency band of the antenna and the environment where the first routing is located.

In one possible design, before the first trace sets the branch line, the processing method further includes: and judging the preset length of the branch line according to the working frequency band of the antenna and the environment where the first routing is located.

In one possible design, whether the electrical length of the first wire after the branch line is set is matched with the working frequency band of the antenna is judged, and if the electrical length of the first wire after the branch line is set is matched with the working frequency band of the antenna, the preset position and the preset length of the branch line are adjusted.

In a possible design, the first trace includes a body line, and when the first trace is provided with a branch line, at least one end of the branch line is connected to the body line.

The sixth aspect of the present application provides a processing method for eliminating antenna clutter, for eliminating clutter of an antenna of an electronic device, the electronic device includes a side key FPC and an antenna, the side key FPC includes a connected plate body and a wiring, the processing method includes: judging a first routing for absorbing the energy of the antenna in the working frequency band; arranging a wave-absorbing material on the first routing; the wave-absorbing material is used for changing the electrical length of the first wire, so that the absorption frequency of the first wire is located outside the working frequency band of the antenna.

By the processing method, the electrical length of the first wire can be changed, so that the electrical length of the first wire is not matched with the working frequency band of the antenna (the frequency of electromagnetic waves absorbed by the first wire is not matched with the working frequency of the antenna), and the first wire cannot absorb energy in the working frequency band of the antenna, namely the in-band performance of the antenna is high.

In one possible design, before the first trace is provided with the wave-absorbing material, the processing method further includes: and judging and setting the preset position of the wave-absorbing material according to the working frequency band of the antenna.

In one possible design, before the trace is provided with the wave-absorbing material, the processing method further includes: and judging the coverage area of the wave-absorbing material according to the working frequency band of the antenna.

In one possible design, whether the electrical length of the first wire after the wave-absorbing material is arranged is matched with the working frequency band of the antenna is judged, and if the electrical length of the first wire is matched with the working frequency band of the antenna, the preset position and the coverage area of the wave-absorbing material are adjusted.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

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

FIG. 2 is a schematic structural view of the side key FPC of FIG. 1 in a first embodiment;

FIG. 3 is an enlarged view of a portion I of FIG. 2;

FIG. 4 is a schematic diagram of the structure of FIG. 3 in another embodiment;

FIG. 5 is a schematic diagram of the structure of FIG. 3 in yet another embodiment;

FIG. 6 is a schematic structural view of the side key FPC of FIG. 1 in a second embodiment;

FIG. 7 is an enlarged view of a portion II of FIG. 6;

FIG. 8 is a schematic diagram of the structure of FIG. 7 in another embodiment;

FIG. 9 is a schematic structural view of the side key FPC of FIG. 1 in a third embodiment;

FIG. 10 is an enlarged view of a portion III of FIG. 9;

FIG. 11 is a schematic diagram of the structure of FIG. 10 in another embodiment;

FIG. 12 is a schematic structural view of the side key FPC of FIG. 1 in a fourth embodiment;

FIG. 13 is a schematic structural view of the side key FPC of FIG. 1 in a fifth embodiment;

fig. 14 is a partial enlarged view of the portion IV in fig. 13.

Reference numerals:

1-side key FPC;

11-a first trace;

111-body line;

111 a-opening;

112-tributary lines;

112 a-a via;

113-a wave-absorbing material;

12-a second trace;

13-a plate body;

2-a shell;

a 21-side bond;

22-middle frame;

221-antenna.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

In one embodiment, the present application is described in further detail below with reference to specific embodiments and accompanying drawings.

In the electronic equipment, the energy of the antenna is absorbed by a metal structure, a metal wire, a dielectric material and the like near the middle frame, so that the in-band performance of the antenna is deteriorated, and the performance index of the antenna is reduced. The middle frame of the electronic equipment is provided with the side keys, the side keys are connected with the side key FPC, the distance between the side key FPC and the antenna is short, and the radiation energy of the antenna is easily absorbed, so that the performance of the antenna is reduced. Specifically, the energy of the antenna is easily coupled with the side key FPC, and excites the 1/2 wavelength mode of the side key FPC trace, and the 1/2 wavelength mode absorbs the radiation energy of the antenna and is finally consumed in the form of heat, so that the radiation performance of the antenna has efficiency pits, and the in-band average efficiency of the antenna is reduced.

In order to solve the technical problem, an embodiment of the present application provides an electronic device, which may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a Personal Digital Assistant (PDA), an Augmented Reality (AR) device, a Virtual Reality (VR) device, an Artificial Intelligence (AI) device, a wearable device, a vehicle-mounted device, a smart home device, and/or a smart city device, and the specific type of the electronic device is not particularly limited by the embodiment of the present application.

The electronic device may include a housing, a processor, a battery, an antenna, a screen, an audio module, a speaker, and the like. The wireless communication function of the electronic device may be implemented by an antenna, a mobile communication module, a modem processor, a baseband processor, and the like.

Specifically, as shown in fig. 1, in the electronic device, the housing 2 includes a middle frame 22, the middle frame 22 is made of metal, and an antenna 221 is disposed, and the antenna 221 may be formed by disposing an opening in the middle frame 22. Meanwhile, the electronic device further comprises a side key 21 arranged on the shell 2, and a user controls the electronic device through the side key 21 so as to realize the functions of turning on and off the electronic device or adjusting the volume and the like. The side key 21 is connected with a side key FPC1, the side key FPC1 is connected with a circuit board of the electronic equipment, and when a user operates the side key 21, signals can be transmitted to the circuit board of the electronic equipment through the side key FPC1, so that the electronic equipment is controlled.

As shown in fig. 2, the side key FPC1 includes a board body 13 and a trace connected to the board body 13, where the trace includes one or more second traces 12, and an absorption frequency of the second trace 12 is outside an operating frequency of the antenna 221, so that the second trace 12 does not absorb energy of the antenna 221 within the operating frequency band, and thus, an in-band performance of the antenna 221 is not reduced. When the absorption frequency of the first trace 11 of the trace is within the working frequency band of the antenna 221, the first trace 11 may absorb the energy of the antenna 221 within the working frequency band, thereby reducing the in-band performance of the antenna 221.

In this embodiment, in order to prevent the first trace 11 from absorbing the energy of the antenna 221 within the working frequency band and reducing the in-band performance of the antenna 221, as shown in fig. 3, a branch line 112 is added to the first trace 11, and the branch line 112 is used for electrically connecting with the body line 111 of the first trace 11, so that after the branch line 112 is added to the first trace 11, the branch line 112 can change the electrical length of the first trace 11, so that the absorption frequency of the first trace 11 is outside the working frequency band of the antenna 221. Wherein, the electrical length of the first trace 11 refers to a ratio of a geometric length of the trace to a wavelength of an electromagnetic wave transmitted by the trace, the geometric length of the first trace 11 is a sum of the lengths of the body line 111 and the branch line 112, for the same first trace 11, when the wavelength of the electromagnetic wave transmitted by the trace is different, the electrical length of the first trace 11 is different, the electrical length is a physical quantity for describing how frequently the waveform of the electromagnetic wave changes, that is, the electrical length of the first trace 11 is related to a period and a frequency of the electromagnetic wave, when the electrical length of the first trace 11 is matched with an operating frequency band of the antenna 221 (a frequency of the electromagnetic wave absorbed by the first trace 11 is matched with the operating frequency of the antenna 221), the first trace 11 can absorb energy of the antenna 221 within the operating frequency band, and when the electrical length of the first trace 11 is not matched with the operating frequency band of the antenna 221 (a frequency of the electromagnetic wave absorbed by the first trace 11 is not matched with the operating frequency of the antenna 221), the first trace 11 does not absorb energy of the antenna 221 in the operating frequency band.

In this embodiment, the branch line 112 is added to the first trace 11, so that the geometric length of the first trace 11 is increased, and when the geometric length is changed, the electrical length of the first trace 11 can be changed, so that the electrical length of the first trace 11 is not matched with the working frequency band of the antenna 221 (the frequency of the electromagnetic wave absorbed by the first trace 11 is not matched with the working frequency of the antenna 221), so that the first trace 11 does not absorb the energy of the antenna 221 in the working frequency band, that is, the in-band performance of the antenna 221 is higher. Meanwhile, in the embodiment, when the absorption of the side key FPC1 to the energy of the antenna 221 in the working frequency band is eliminated, the absorption is realized by adding the branch line 112 to the first routing line 11 of the absorption antenna 221 without adding elements such as a capacitor and an inductor to the side key FPC1, so that the cost is saved. In addition, when the capacitance or inductance element is soldered to the side key FPC, the connection reliability between the capacitance or inductance element and the side key FPC is reduced with the increase of the number of times of pressing the side key 21, which may cause the capacitance or inductance element to fall off, whereas the connection reliability between the body line 111 and the branch line 112 is high in the present embodiment, which can improve the in-band performance of the antenna 221 and improve the service life.

Specifically, the main body wire 111 and the branch wire 112 are integrally formed, so that the reliability between the main body wire 111 and the branch wire 112 is high, and when the number of times of pressing the side key 21 is increased, the branch wire 112 will not fall off from the main body wire 111, thereby improving the reliability and the service life of the side key FPC1, and effectively improving the in-band performance of the antenna 221. Or, the body line 111 and the branch line 112 are fixedly connected, and at this time, the body line 111 and the branch line 112 may be connected by welding or adhered by a conductive adhesive.

In one possible design, as shown in fig. 3 to 5, one end of the branch line 112 is used for electrically connecting with the body line 111, and the other end is a free end, that is, in the first trace 11, the branch line 112 is an open line, and after the branch line 112 is added to the first trace 11, the branch line 112 functions as a capacitor disposed on the first trace 11, so that after the branch line 112 is added, the impedance of the first trace 11 can be increased. The resonant frequency of the first trace 11 satisfies:

as can be known from the above formula, the resonant frequency of the first trace 11 is related to the parameter inductance L and the capacitance C, and therefore, after the branch line 112 is added (the capacitance is added in the first trace 11), the resonant frequency of the first trace 11 can be reduced, that is, the resonant frequency point of the first trace 11 moves to a low frequency, at this time, the first trace 11 is not easy to resonate with the antenna 221, so that the first trace 11 is prevented from absorbing the energy of the antenna 221 in the working frequency band, and the in-band performance of the antenna 221 is improved. In addition, in the embodiment, the capacitor disposed on the first trace 11 is implemented by the branch line 112, and it is not necessary to solder a capacitor element on the first trace 11, so as to save cost and improve reliability of the first trace 11.

In another possible design, as shown in fig. 6 to 8, both ends of the branch line 112 are used for electrically connecting with the main body line 111, that is, in the first trace 11, the branch line 112 is connected in parallel to the main body line 111, the branch line 112 is a short-circuit line, and after the branch line 112 is added to the first trace 11, the branch line 112 functions as an inductor disposed on the first trace 11, so that after the trace 112 is added, the impedance of the first trace 11 can be increased. The resonant frequency of the first trace 11 satisfies:

as can be known from the above formula, the resonant frequency of the first trace 11 is related to the parameter inductance L and the capacitance C, so that after the branch line 112 is added (the inductance is added in the first trace 11), the resonant frequency of the first trace 11 can be reduced, that is, the resonant frequency point of the first trace 11 moves to a low frequency, at this time, the first trace 11 is not easy to resonate with the antenna 221, thereby preventing the first trace 11 from absorbing the energy of the antenna 221 in the working frequency band, and improving the in-band performance of the antenna 221. In addition, in the embodiment, the inductance disposed on the first trace 11 is implemented by the branch line 112, and it is not necessary to weld an inductance element on the first trace 11, so as to save cost and improve reliability of the first trace 11.

Specifically, as shown in fig. 8, in the first trace 11, the main body line 111 has an opening 111a, two ends of the branch line 112 are respectively used for electrically connecting with two ends of the opening 111a, at this time, it is equivalent to replace a section of the main body line 111 corresponding to the opening 111a by the branch line 112, when the length of the branch line 112 is different from the length of the connection line at two ends of the opening 111a, the arrangement of the branch line 112 can change the geometric length of the first trace 11 (increase the geometric length of the first trace 11), so as to change the electrical length of the first trace 11 (increase the electrical length of the first trace 11), further make the electrical length of the first trace 11 not match with the working frequency band of the antenna 221, make the first trace 11 not absorb the energy of the antenna 221 within the working frequency band, and improve the in-band performance of the antenna 221.

In the embodiment shown in fig. 9 and fig. 10, the first trace 11 may be provided with a plurality of branch lines 112, wherein in the first trace 11, a part of the branch lines 112 is an open line, and another part of the branch lines 112 is a short-circuited line, which is equivalent to providing a capacitor and an inductor in the first trace 11, so as to increase the impedance of the first trace 11. The resonant frequency of the first trace 11 satisfies:

as can be known from the above formula, the resonant frequency of the first trace 11 is related to the parameter inductance L and the parameter capacitance C, and therefore, after the first trace 112 is added (the capacitance and the inductance are added in the first trace 11), the resonant frequency of the first trace 11 can be reduced, that is, the resonant frequency point of the first trace 11 moves to a low frequency, at this time, the first trace 11 is not likely to resonate with the antenna 221, so that the first trace 11 is prevented from absorbing the energy of the antenna 221 in the working frequency band, and the in-band performance of the antenna 221 is improved. In addition, in the embodiment, the capacitance and the inductance disposed on the first trace 11 are implemented by the branch line 112, and it is not necessary to weld a capacitance element and an inductance element on the first trace 11, so as to save cost and improve reliability of the first trace 11.

In the above embodiments, the branch line 112 has a predetermined length, and the predetermined length is configured as: the electrical length of the first trace 11 can be mismatched with the electrical length required to absorb the energy of the antenna 221 within the operating frequency band.

In the above embodiments, the branch line 112 is disposed on the body line 111 of the first trace 11, so that the electrical length of the first trace 11 can be increased, and the resonant frequency of the first trace 11 is reduced, so that the resonant frequency point of the first trace 11 moves to a low frequency, at this time, the first trace 11 is not likely to resonate with the antenna 221, thereby preventing the first trace 11 from absorbing the energy of the antenna 221 in the working frequency band, and improving the in-band performance of the antenna 221.

In addition, the branch line 112 is disposed at a predetermined position of the body line 111, and the predetermined position is configured to: the first trace 11 has a position where the electrical length of the first trace does not match the electrical length required for absorbing the energy of the antenna 221 in the operating frequency band.

The preset length and the preset position of the branch line 112 in the first trace 11 can be calculated according to simulation software, and it can also be calculated through the simulation software whether the first trace 11 after the branch line 112 is set absorbs the energy of the antenna 221 in the working frequency band to cause the in-band performance of the antenna 221 to be reduced, if the in-band performance of the antenna 221 is not reduced by the first trace 11, the preset length and the preset position of the branch line 112 are appropriate, and if the in-band performance of the antenna 221 is still reduced by the first trace 11, the preset length and/or the preset position of the branch line 112 need to be modified until the in-band performance of the antenna 221 is not reduced by the first trace 11.

In one embodiment, the bypass line 112 includes one or more layers of electrical connection elements along the thickness of the bypass line 112. As shown in fig. 4 and 7, the branch line 112 includes a plurality of layers of electrical connection units along the thickness direction, and the branch line 112 is provided with a through hole 112a, after the through hole 112a is provided, each layer of electrical connection units can be electrically connected, so as to increase the geometric length of the branch line 112, and further increase the electrical length of the first trace 11, so that the electrical length of the first trace 11 is not matched with the working frequency band of the antenna 221, and meanwhile, when the branch line 112 includes a plurality of layers of electrical connection units along the thickness direction, the space of the branch line 112 along the thickness direction can be reasonably utilized, so as to reduce the space of other directions occupied by the branch line 112, and reduce the risk of interference between the branch line 112 and other components of the electronic device.

On the other hand, as shown in fig. 11, in the electronic device, the branch line 112 may also be reserved, and when the in-band performance of the antenna 221 is reduced due to the fact that a certain trace of the side key FPC1 absorbs energy of the antenna 221 in the operating frequency band during the use of the electronic device, the reserved branch line 112 may be connected to the trace, so as to change the electrical length of the trace, so that the electrical length of the trace is not matched with the operating frequency band of the antenna 221, that is, the trace no longer absorbs energy of the antenna 221 in the operating frequency band, thereby conveniently improving the in-band performance of the antenna 221, and reducing the maintenance difficulty and cost of the antenna. There may be a plurality of branch lines 112, and the positions of the branch lines 112 are reasonably arranged according to the internal space of the electronic device.

In the above embodiments, the shape of the branch line 112 is one or more of a straight line, a curve, a broken line, a spiral line, a serpentine line, and an irregular line. In the present application, the shape of the branch line 112 is not particularly limited as long as the in-band performance of the antenna 221 can be ensured and the branch line 112 can be prevented from interfering with other components of the electronic device.

In addition, in order to solve the technical problem, an embodiment of the present invention further provides a processing method for eliminating a clutter of an antenna 221 of an electronic device, where the clutter is a clutter caused by a side key FPC1 in the electronic device, that is, the first trace 11 of the side key FPC1 absorbs radiation energy of the antenna 221, which causes a performance degradation in a band of the antenna 221, and the processing method may specifically include the following steps:

s, 11: judging a first trace 11 generating clutter;

s12: arranging a branch line 112 on the first trace 11; the branch line 112 is used to change the electrical length of the first trace 11, so that the absorption frequency of the first trace 11 is outside the working frequency band of the antenna 221.

In step S11, the first trace 11 generating noise among the traces in the side key FPC1 is determined by the simulation software, and after the first trace 11 is determined, according to step S12, a branch trace 112 is added to the first trace 11, and the branch trace 112 and the body trace 111 of the first trace 11 may be fixedly connected or integrally formed.

Therefore, through the step S12, the electrical length of the first trace 11 can be changed, so that the electrical length of the first trace 11 is not matched with the operating frequency band of the antenna 221 (the frequency of the electromagnetic wave absorbed by the first trace 11 is not matched with the operating frequency of the antenna 221), and thus the first trace 11 does not absorb the energy of the antenna 221 in the operating frequency band, that is, the in-band performance of the antenna 221 is high.

Specifically, step S12 may specifically include:

s121: judging a preset position and a preset length of the branch line 112 according to the working frequency band of the antenna 221 and the environment where the first trace 11 is located;

s122: a branch line 112 is disposed on the first trace 11.

In step S121, the preset position and the preset length set by the branch line 112 may be determined by the simulation software, where the preset position is configured as: a position where the electrical length of the first trace 11 does not match the electrical length required to absorb the energy of the antenna 221 without interfering with other components of the electronic device; the preset length is configured as: the electrical length of the first trace 11 can be made to not match the electrical length required to absorb the energy of the antenna 221.

In this embodiment, when the branch line 112 meets the condition of the preset length at the preset position, the electrical length of the first trace 11 is not matched with the working frequency band of the antenna 221, so as to avoid the performance degradation in the band of the antenna 221 caused by the first trace 11 absorbing the energy of the antenna 221 within the working frequency band.

More specifically, after the step S122, the processing method may further include:

s13: judging whether the electrical length of the first wire 11 after the branch line 112 is set is matched with the working frequency band of the antenna 221, and if so, adjusting the preset position and the preset length of the branch line 112; if not, the predetermined position and the predetermined length of the branch line 112 are appropriate.

In step S13, it is specifically determined whether the preset position and the preset length of the branch line 112 are appropriate through the simulation software, and if not, the preset position and the preset length of the branch line 112 are optimized.

In the foregoing embodiments, step S122 may specifically include:

s1221: at least one end of the branch line 112 is connected to the body line 111.

As described above, when one end of the branch line 112 is connected to the main body line 111, one end of the branch line 112 is used for electrically connecting to the main body line 111, and the other end is a free end, that is, in the first trace 11, the branch line 112 is an open line, and after the branch line 112 is added to the first trace 11, the branch line 112 functions as a capacitor disposed on the first trace 11; when both ends of the branch line 112 are connected to the main body line 111, that is, in the first trace 11, the branch line 112 is connected in parallel to the main body line 111, the branch line 112 is a short-circuit line, and after the branch line 112 is added to the first trace 11, the function of the branch line 112 is equivalent to the inductance disposed on the first trace 11. Therefore, when the branch line 112 is added to the first trace 11, the impedance of the first trace 11 can be increased, so as to reduce the resonant frequency of the first trace 11, that is, the resonant frequency point of the first trace 11 moves to a low frequency, at this time, the first trace 11 is not likely to resonate with the antenna 221, thereby preventing the first trace 11 from absorbing the energy of the antenna 221 in the working frequency band, and improving the in-band performance of the antenna 221. In addition, in the embodiment, the inductance disposed on the first trace 11 is implemented by the branch line 112, and it is not necessary to weld an inductance element on the first trace 11, so as to save cost and improve reliability of the first trace 11.

In another possible design, as shown in fig. 12 to 14, the first trace 11 includes a body line 111 and a wave-absorbing material 113 disposed on the body line 111, where the wave-absorbing material 113 is used to change an electrical length of the first trace 11, so that the electrical length of the first trace 11 is not matched with an operating frequency band of the antenna 221, that is, an absorption frequency of the first trace 11 is outside the operating frequency band of the antenna 221.

The wave-absorbing material 113 is capable of absorbing or attenuating energy of electromagnetic waves received by a surface thereof, so as to reduce interference of the electromagnetic waves. The wave-absorbing material 113 may be ferrite, graphene, graphite, carbon fiber, silicon carbide, or the like. In this application, the specific type of the wave-absorbing material 113 is not limited, as long as the impedance of the first trace 11 can be changed at the resonant frequency of the antenna 221 (that is, at the resonant frequency point of the antenna 221, the dielectric constant or the magnetic permeability of the wave-absorbing material 113 is relatively large).

In this embodiment, after the wave-absorbing material 113 is added to the first trace 11, since the wave-absorbing material 113 has an effect of absorbing electromagnetic wave energy, so that the equivalent dielectric constant of the first trace 11 can be changed (after the wave-absorbing material 113 is added, compared with the case where the wave-absorbing material 113 is not added, the dielectric constant is increased), that is, the electrical length of the first trace 11 can be changed, so that the electrical length of the first trace 11 is not matched with the working frequency band of the antenna 221 (the frequency of the electromagnetic wave absorbed by the first trace 11 is not matched with the working frequency of the antenna 221), so that the first trace 11 does not absorb the energy of the antenna 221 in the working frequency band, that is, the in-band performance of the antenna 221 is higher. Meanwhile, in this embodiment, when the absorption of the energy of the antenna 221 in the working frequency band by the side key FPC1 is eliminated, it is not necessary to add elements such as a capacitor and an inductor to the side key FPC1, but it is realized by adding the wave-absorbing material 113 to the first trace 11 which absorbs the energy of the antenna 221 in the working frequency band, so that the cost is saved.

Specifically, the wave-absorbing material 113 is adhered to the body wire 111 through a glue material. Wherein, the glue material can be structural glue or conductive glue, etc.

More specifically, the thickness of the wave-absorbing material 113 is 0.2mm to 0.6mm, for example, the thickness of the wave-absorbing material 113 may be 0.2mm, 0.3mm, 0.5mm, 0.6mm, etc.

If the thickness of the wave-absorbing material 113 is too small (for example, less than 0.2mm), the content of the wave-absorbing material 113 disposed on the body line 111 is too small, and the electrical length of the first trace 11 cannot be effectively changed, so that the first trace 11 may still absorb the radiation energy of the antenna 221, and the in-band performance of the antenna 221 is reduced; if the thickness of the wave-absorbing material 113 is too large (for example, greater than 0.6mm), it can be ensured that the electrical length of the first wire 11 is not matched with the working frequency band of the antenna 221, so that it can be ensured that the first wire 11 does not absorb the energy of the antenna 221 in the working frequency band, and further the in-band performance of the antenna 221 is ensured, however, when the thickness of the wave-absorbing material 113 is too large, the in-band performance of the antenna 221 is not further increased, which results in the waste of the wave-absorbing material 113. Therefore, when the thickness of the wave-absorbing material 113 is 0.2mm to 0.6mm, the first trace 11 does not absorb the energy of the antenna 221 in the working frequency band, so as to ensure the in-band performance of the antenna 221, and reduce the waste of the wave-absorbing material 113.

In a first specific embodiment, as shown in fig. 12, the wave-absorbing material 113 covers the body line 111, that is, the wave-absorbing material 113 is disposed at each position of the first trace 11, so that any position of the first trace 11 can be prevented from absorbing radiation energy of the antenna 221 in the working frequency band, the first trace 11 is effectively prevented from absorbing energy of the antenna 221 in the working frequency band, and the in-band performance of the antenna 221 is improved.

In addition, the side key FPC1 may include a plurality of first traces 11 therein, and each first trace 11 may be provided with the wave-absorbing material 113, so that the electrical length of each first trace 11 is not matched with the operating frequency band of the antenna 221, thereby preventing each first trace 11 from absorbing energy of the antenna 221 within the operating frequency band. Or, in the side key FPC1, each trace (including the second trace 112) may be provided with the wave absorbing material 113, so that the electrical length of each trace in the side key FPC1 is not matched with the operating frequency band of the antenna 221, thereby further preventing each trace of the side key FPC1 from absorbing energy of the antenna 221 within the operating frequency band, and improving the in-band performance of the antenna 221.

In a second embodiment, as shown in fig. 13, a wave-absorbing material 113 is disposed at a predetermined position of the body line 111 in the first trace 11, where the predetermined position is a position where the first trace 11 absorbs energy of the antenna 221 within the working frequency band, that is, the predetermined position is a position where the first trace 11 generates noise.

In this embodiment, when the wave absorbing material 113 is disposed at the position of the first trace 11 where the clutter is generated, the clutter at the position can be eliminated, that is, the electrical length of the first trace 11 can be changed, so that the position where the clutter is generated no longer absorbs the energy of the antenna 221 in the working frequency band, thereby ensuring the in-band performance of the antenna 221. Meanwhile, in this embodiment, the wave-absorbing material 113 does not need to be disposed at each position of the first trace 11, so that the wave-absorbing material can be saved, and the cost can be reduced.

In the third embodiment, in the first wire 11, the wave-absorbing material 113 is disposed at a preset position of the body line 111, the preset position is a position of a clutter current strong point in the first wire 11, and the absorption of the energy of the antenna 221 in the first wire 11 mainly occurs at the position of the clutter current strong point.

In this embodiment, when the wave-absorbing material 113 is disposed at the position of the clutter current strong point of the first trace 11, the electrical length of the first trace 11 at the position of the clutter current strong point is changed, and the electrical length is not matched with the working frequency band of the antenna 221, so that the position of the clutter current strong point does not absorb the energy of the antenna 221 within the working frequency band any more, and the in-band performance of the antenna 221 is improved.

Specifically, the coverage area of the wave-absorbing material 113 is configured to: the electrical length of the first trace 11 can be made to not match the electrical length required to absorb the energy of the antenna 221.

In this embodiment, when the wave-absorbing material 113 covers a part of the main body line 111, the coverage area of the wave-absorbing material 113 meets the above conditions, where the coverage area and the preset position of the wave-absorbing material 113 in the first trace 11 can be calculated according to simulation software, and whether the first trace 11 after the wave-absorbing material 113 is set absorbs the energy of the antenna 221 in the working frequency band through the simulation software to cause the in-band performance of the antenna 221 to be reduced, if the in-band performance of the antenna 221 is not reduced by the first trace 11, the coverage area and the preset position of the wave-absorbing material 113 are appropriate, and if the in-band performance of the antenna 221 is still reduced by the first trace 11, the coverage area and/or the preset position of the wave-absorbing material 113 needs to be modified until the in-band performance of the antenna 221 is not reduced by the first trace 11.

In addition, an embodiment of the present application further provides a processing method for eliminating a clutter of an antenna 221 of an electronic device, where the clutter is a clutter caused by a side key FPC1 in the electronic device, that is, the first trace 11 of the side key FPC1 absorbs radiation energy of the antenna 221 in an operating frequency band, so as to cause a performance degradation in a band of the antenna 221, and in order to solve the technical problem, the processing method may specifically include the following steps:

s21: judging a first trace 11 generating clutter;

s22: arranging a wave-absorbing material 113 on the first wire 11; the wave-absorbing material 113 is used to change the electrical length of the first trace 11, so that the absorption frequency of the first trace 11 is outside the working frequency band of the antenna 221.

In step S21, the first trace 11 generating noise in each trace in the side key FPC1 is determined by simulation software, and after the first trace 11 is determined, the wave-absorbing material 113 is added to the first trace 11 according to step S22, and the wave-absorbing material 113 and the body line 111 of the first trace 11 may be adhered by a glue material.

Specifically, step S22 may specifically include:

s221: judging a preset position of the wave-absorbing material 113 according to the working frequency band of the antenna 221, and judging the coverage area of the wave-absorbing material 113 according to the working frequency band of the antenna 221;

s222: the wave-absorbing material 113 is disposed on the first trace 11, and the wave-absorbing material 113 is disposed at a predetermined position, and the area of the wave-absorbing material is the coverage area.

In step S221, the setting position and the coverage area of the wave-absorbing material 113 may be determined by simulation software, where the preset position is configured as: the first trace 11 is located at a position where the clutter is generated, or at a position where a clutter current strong point in the first trace 11 is located; the coverage area is configured as: the electrical length of the first trace 11 can be made mismatched with the electrical length required to absorb the energy of the antenna 221 within the operating frequency band.

In this embodiment, when the wave-absorbing material 113 meets the conditions of the preset position and the coverage area, the electrical length of the first trace 11 after the wave-absorbing material 113 is set is not matched with the working frequency band of the antenna 221, so that the performance of the first trace 11 in the band of the antenna 221 is prevented from being reduced due to the fact that the first trace 11 absorbs the energy of the antenna 221 in the working frequency band.

More specifically, after the step S222, the processing method may further include:

s23: judging whether the first wire 11 provided with the wave-absorbing material 113 generates clutter or not, namely judging whether the electrical length of the first wire 11 provided with the wave-absorbing material 113 is matched with the working frequency band of the antenna 221 or not, and if the electrical length is matched with the working frequency band of the antenna 221 (if the clutter is generated), adjusting the preset position and the coverage area of the wave-absorbing material 113; if the two traces are not matched (no noise is generated), the predetermined position and the coverage area of the wave-absorbing material 113 of the first trace 11 are appropriate.

In step S23, it may be specifically determined whether the preset position and the coverage area of the wave-absorbing material 113 are appropriate through simulation software, and if not, the preset position and the coverage area of the wave-absorbing material 113 are optimized.

It is noted that a portion of this patent application contains material which is subject to copyright protection. The copyright owner reserves the copyright rights whatsoever, except for making copies of the patent files or recorded patent document contents of the patent office.

Claims

1. An electronic device, characterized in that the electronic device comprises:

a housing provided with a side key;

an antenna disposed on the housing;

the side key FPC is connected with the side key and comprises a plate body and a wiring connected with the plate body;

the wires comprise a first wire, the first wire comprises a body wire and a branch wire, and the branch wire is electrically connected with the body wire and used for changing the electrical length of the first wire, so that the absorption frequency of the first wire is outside the working frequency band of the antenna.

2. The electronic device of claim 1, wherein one end of the branch line is electrically connected to the main body, and the other end is a free end.

3. The electronic device according to claim 1, wherein both ends of the branch line are used for electrically connecting with the main body line.

4. The electronic device according to claim 3, wherein the body line has an opening, and both ends of the branch line are respectively used for being electrically connected with both ends of the opening.

5. The electronic device of claim 1, wherein the bypass line has a preset length configured to: the electrical length of the first trace can be mismatched with the electrical length required to absorb the energy of the antenna within the operating frequency band.

6. The electronic device according to any one of claims 1 to 5, wherein the shape of the branch line comprises one or more of a straight line, a curve, a broken line, a spiral line, a serpentine line, and an irregular line.

7. The electronic device according to any one of claims 1 to 5, wherein the branch line includes one or more layers of electrical connection units in a thickness direction of the branch line.

8. The electronic device according to any one of claims 1 to 5, wherein the body line is integrally formed with the branch line, or the body line is fixedly connected with the branch line.

9. An electronic device, characterized in that the electronic device comprises:

a housing provided with a side key;

an antenna disposed on the housing;

the wiring comprises a first wiring, the first wiring comprises a body line and a wave-absorbing material arranged on the body line, and the wave-absorbing material is used for changing the electrical length of the first wiring so that the absorption frequency of the first wiring is located outside the working frequency band of the antenna.

10. The electronic device of claim 9, wherein the wave-absorbing material is affixed to the body wire.

11. The electronic device of claim 9, wherein the thickness of the wave-absorbing material is 0.2mm to 0.6 mm.

12. The electronic device of claim 9, wherein the wave-absorbing material covers the body wire.

13. The electronic device of claim 9, wherein the wave-absorbing material is disposed at a predetermined position of the body line, the predetermined position configured to: the body line absorbs the position of the antenna within the working frequency band.

14. The electronic device according to claim 13, wherein the wave-absorbing material is disposed at a position of a strong spot of the clutter current in the first trace.

15. The electronic device according to any one of claims 9 to 14, wherein the coverage area of the wave-absorbing material is configured as follows: the electrical length of the first trace can be mismatched with the electrical length required to absorb the energy of the antenna within the operating frequency band.

16. A side key FPC is characterized by comprising a plate body and a first routing wire, wherein the first routing wire is connected with the plate body;

the first routing line comprises a body line and a branch line, and the branch line is electrically connected with the body line.

17. The side-key FPC of claim 16, wherein one end of the branch lines is for electrical connection with the body line, and the other end is a free end.

18. The side-key FPC of claim 16, wherein both ends of the branch lines are for electrical connection with the body line.

19. A side key FPC is characterized by comprising a plate body and a first routing wire, wherein the first routing wire is connected with the plate body;

20. The side-key FPC of claim 19, wherein the wave-absorbing material covers at least a portion of the body lines.

21. A processing method for eliminating clutter of an antenna is used for eliminating clutter of the antenna of electronic equipment, and is characterized in that the electronic equipment comprises a side key FPC and the antenna, the side key FPC comprises a connected plate body and a connected wire, and the processing method comprises the following steps:

judging a first routing for absorbing the energy of the antenna in the working frequency band;

arranging a branch line on the first routing;

the branch line is used for changing the electrical length of the first wire, so that the absorption frequency of the first wire is positioned outside the working frequency band of the antenna.

22. The process of claim 21, wherein prior to the first trace providing the routing path, the process further comprises:

and judging and setting the preset position of the branch line according to the working frequency band of the antenna and the environment where the first routing is located.

23. The process of claim 21, wherein prior to the first trace providing the routing path, the process further comprises:

and judging the preset length of the branch line according to the working frequency band of the antenna and the environment where the first routing is located.

24. The processing method according to claim 21, wherein it is determined whether the electrical length of the first trace after the branch line is set is matched with the operating frequency band of the antenna, and if so, a preset position and a preset length of the branch line are adjusted.

25. The processing method according to any one of claims 21 to 24, wherein the first trace comprises a body line, and when the first trace is provided with a branch line, at least one end of the branch line is connected with the body line.

26. A processing method for eliminating clutter of an antenna is used for eliminating clutter of the antenna of electronic equipment, and is characterized in that the electronic equipment comprises a side key FPC and the antenna, the side key FPC comprises a connected plate body and a connected wire, and the processing method comprises the following steps:

arranging a wave-absorbing material on the first routing;

the wave-absorbing material is used for changing the electrical length of the first wire, so that the absorption frequency of the first wire is located outside the working frequency band of the antenna.

27. The process of claim 26, wherein prior to disposing the first trace with the wave-absorbing material, the process further comprises:

and judging and setting the preset position of the wave-absorbing material according to the working frequency band of the antenna.

28. The process of claim 26, wherein prior to disposing the traces with the wave-absorbing material, the process further comprises:

and judging the coverage area of the wave-absorbing material according to the working frequency band of the antenna.

29. The processing method according to claim 26, wherein it is determined whether the electrical length of the first trace after the wave-absorbing material is disposed is matched with the operating frequency band of the antenna, and if so, the preset position and the coverage area of the wave-absorbing material are adjusted.