An electronic device

Abstract

The embodiment of the application provides an electronic device, which comprises: a device main body, an antenna, a resonant component, a first grounding point and a frequency adjusting structure; the antenna, the resonant component, the first grounding point and the frequency adjusting structure are arranged on the device main body; the resonant component is provided with a second grounding point; the first grounding point is connected to the second grounding point, and the frequency adjusting structure is electrically connected to the second grounding point through the first grounding point, so as to adjust the resonant frequency of the resonant component to a target frequency, and the target frequency is outside the radiation frequency range of the antenna.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to an electronic device. BACKGROUND

[0002] An electronic device is usually provided with an antenna and various resonant components, and radiation spurious emission (abbreviated as RSE) is prone to occur, which affects human health and interferes with the function of the electronic device. During use of the electronic device, the resonant frequency emitted by part of the resonant components falls within the radiation frequency range of the antenna, for example, 2 times or 3 times of the main frequency of the antenna, so that the energy of the antenna is radiated by the resonant components, causing the problem of radiation spurious emission.

[0003] In the prior art, in order to avoid the above-mentioned problem of radiation spurious emission, the number of grounding points of the resonant components can be increased, the grounding mode of the grounding points can be improved, for example, laser spot welding foam or shrapnel grounding, and the resonant components can be subjected to a color process.

[0004] However, the inventor finds in the research on the prior art that increasing the number of grounding points of the resonant components is limited by the spatial layout of the electronic device, and is inconvenient to assemble. Improving the grounding mode of the grounding points requires high process requirements, resulting in high production cost. Subjecting the resonant components to a color process affects the electrostatic discharge and appearance of the electronic device, reducing the user experience. SUMMARY

[0005] In view of the above problems, the present application is proposed to provide an electronic device which overcomes the problem that the resonant components are prone to cause radiation spurious emission.

[0006] To solve the above technical problems, the present application is implemented as follows:

[0007] An electronic device is provided in the embodiments of the present application, and the electronic device comprises a device main body, an antenna, a resonant component, a first grounding point and a frequency modulation structure.

[0008] The antenna, the resonant component, the first grounding point and the frequency modulation structure are all arranged on the device main body.

[0009] The resonant component is provided with a second grounding point.

[0010] The first grounding point is connected to the second grounding point, and the frequency modulation structure is electrically connected to the second grounding point through the first grounding point, so as to adjust the resonant frequency of the resonant component to a target frequency, and the target frequency is outside the radiation frequency range of the antenna.

[0011] In the embodiment of the present application, the resonant frequency of the resonant component can be adjusted by the frequency modulation structure. When the resonant frequency of the resonant component falls within the radiation frequency range of the antenna, the resonant frequency of the resonant component can be increased or decreased so as to be outside the radiation frequency range of the antenna. In this way, the energy of the antenna cannot be radiated out through the resonant component, and the problem of radiation interference of the electronic device is solved. Therefore, the number of grounding points of the resonant component does not need to be increased, and the space layout of the electronic device is not limited, and the assembly is avoided. In addition, the production cost is high due to the improvement of the grounding mode of the grounding point. In addition, the chroma process of the resonant component affects the electrostatic discharge and appearance of the electronic device, and the user experience is improved.

[0012] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0013] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0014] Figure 1 is one of the structural schematic diagrams of an electronic device according to the embodiment of the present application;

[0015] Figure 2 is another structural schematic diagram of an electronic device according to the embodiment of the present application;

[0016] Figure 3 is a circuit schematic diagram of a frequency modulation structure of an electronic device according to the embodiment of the present application;

[0017] Figure 4 is a partial structural schematic diagram of a frequency modulation structure of an electronic device according to the embodiment of the present application;

[0018] Figure 5 is one of the parameter schematic diagrams of a resonant component of an electronic device according to the embodiment of the present application;

[0019] Figure 6 is another parameter schematic diagram of a resonant component of an electronic device according to the embodiment of the present application.

[0020] Reference signs: 10 - resonant component; 20 - first grounding point; 30 - frequency modulation structure; 11 - second grounding point; 31 - frequency modulation circuit; 311 - frequency modulation component; 312 - switch component; 40 - support; 50 - main board; 41 - connecting component; 61 - first circuit; 62 - first switch; 63 - second circuit; 64 - second switch; 65 - third circuit; 66 - third switch; 67 - fourth circuit; 68 - fourth switch. DETAILED DESCRIPTION

[0021] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work under the premise that the scope of protection of the present application.

[0022] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be a fixed connection, or it can be a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Referring to Figures 1 to 4 , a structural schematic diagram of an electronic device according to an embodiment of the present application is shown, and the circuit diagram is a schematic diagram of the circuit inside the frequency modulation structure 30. The electronic device can specifically include: a device main body, an antenna, a resonant piece 10, a first grounding point 20, and a frequency modulation structure 30;

[0026] The antenna, the resonant piece 10, the first grounding point 20 and the frequency modulation structure 30 are all arranged on the device main body;

[0027] The resonant component 10 is provided with a second grounding point 11;

[0028] The first grounding point 20 is connected to the second grounding point 11, and the frequency adjusting structure 30 is electrically connected to the second grounding point 11 through the first grounding point 20 to adjust the resonant frequency of the resonant component 10 to a target frequency, which is outside the radiation frequency range of the antenna.

[0029] In the embodiment of the present application, the resonant frequency of the resonant component 10 can be adjusted by the frequency adjusting structure 30, and when the resonant frequency of the resonant component 10 falls within the radiation frequency range of the antenna, the resonant frequency of the resonant component 10 can be adjusted to be higher or lower, so that the resonant frequency is outside the radiation frequency range of the antenna. In this way, the energy of the antenna cannot be radiated through the resonant component 10, and the problem of radiation clutter of the electronic device is solved. In this way, the number of grounding points of the resonant component 10 does not need to be increased, and the space layout of the electronic device is not limited, avoiding the inconvenience of assembly. It also avoids the high production cost caused by improving the grounding mode of the grounding point. It also avoids the influence of the color process of the resonant component 10 on the electrostatic discharge and appearance of the electronic device, and improves the user experience.

[0030] Specifically, in the embodiment of the present application, the resonant component 10 is a resonant component 10 that does not need to be radiated by the antenna, and during the use of the electronic device, the resonant component 10 will emit a resonant frequency, and when the resonant frequency falls within the radiation frequency of the antenna, the energy of the antenna will be radiated through the resonant component 10, causing radiation clutter. The present application adjusts the resonant frequency of the resonant component 10 to a target frequency through the frequency adjusting structure 30, that is, avoids the radiation frequency range of the antenna, avoiding the problem of radiation clutter and reducing the energy loss of the antenna.

[0031] For example, in the embodiment of the present application, the electronic device can generally work under GSM (Global System for Mobile Communications) 900, and the frequency range corresponding to GSM 900 is 880.2-914.8 MHz (megahertz), and the main frequency of the corresponding antenna is 880.2-914.8 MHz, and the radiation frequency is the multiple frequency of the main frequency, such as 2 times frequency and 3 times frequency. That is, the 2 times frequency range is 1760.4-1829.6 MHz, and the 3 times frequency range is 2640.6-2744.4 MHz.

[0032] In the embodiments of the present application, the resonant frequency of the resonant component 10 can be adjusted to be less than 1760.4 Hz, or greater than 1829.6 MHz and less than 2640.6 MHz, or greater than 2744.4 MHz, etc. by the frequency adjusting structure 30, so that the resonant frequency of the resonant component 10 avoids the radiation frequency range of the antenna and avoids radiation interference.

[0033] In addition, in the embodiments of the present application, the electronic device can also work under GSM1800, GSM850, GSM1900, etc. communication system, and the resonant frequency of the resonant component 10 can be adjusted according to actual needs, which is not limited in the embodiments of the present application.

[0034] Optionally, in the embodiments of the present application, the frequency adjusting structure 30 includes at least two frequency adjusting circuits 31, and the at least two frequency adjusting circuits 31 are respectively electrically connected with the first grounding point 20, and the frequency adjusting ranges of the at least two frequency adjusting circuits 31 are different from each other. In this way, the resonant component 10 can be adjusted in different frequency ranges, so as to improve the frequency adjusting efficiency of the resonant component 10.

[0035] For example, in the embodiments of the present application, the frequency adjusting structure 30 can include a first frequency adjusting circuit and a second frequency adjusting circuit, and the first frequency adjusting circuit and the second frequency adjusting circuit are respectively electrically connected with the first grounding point 20. The first frequency adjusting circuit can increase the resonant frequency of the resonant component 10 to the target frequency, and the second frequency adjusting circuit can decrease the resonant frequency of the resonant component 10 to the target frequency. In this way, when the resonant frequency of the resonant component 10 falls within the radiation frequency range of the antenna, the resonant frequency of the resonant component 10 can be increased by the first frequency adjusting circuit or decreased by the second frequency adjusting circuit, so that the resonant frequency is outside the radiation frequency range of the antenna.

[0036] In some optional embodiments of the present application, the frequency adjusting structure 30 includes a switch component 312 and a plurality of frequency adjusting circuits 311, and the switch component 312 is respectively arranged between the at least two frequency adjusting circuits 311, and the switch component 312 is used to connect the at least two frequency adjusting circuits 311 and control the at least two frequency adjusting circuits 311 to be combined with each other. In this way, a plurality of different combination frequency adjusting modes can be realized, and the frequency adjusting effect of the frequency adjusting structure 30 is improved.

[0037] For example, the switch component 312 can be a single-pole double-throw switch, which is electrically connected with the first grounding point 20, and the single-pole double-throw switch is respectively electrically connected with the first frequency adjusting component 311 and the second frequency adjusting component 321, so as to control the first frequency adjusting circuit 31 and / or the second frequency adjusting circuit 32 to be turned on or turned off.

[0038] In some optional embodiments of the present application, as shown in FIG. 4, the frequency adjusting structure 30 includes a plurality of frequency adjusting circuits 31, and the plurality of frequency adjusting circuits 31 are respectively electrically connected with the first grounding point 20. Figure 4As shown, the switch 312 in the frequency modulation structure 30 can be a four single-pole single-throw switch, and the frequency modulation circuit 31 can include a first circuit 61, a second circuit 63, a third circuit 65, and a fourth circuit 67. The first circuit 61 is provided with a first switch 62 to control the on-off of the first circuit 61. The second circuit 63 is provided with a second switch 64 to control the on-off of the second circuit 63. The third circuit 65 is provided with a third switch 66 to control the on-off of the third circuit 65. The fourth circuit 67 is provided with a fourth switch 68 to control the on-off of the fourth circuit 67.

[0039] The four circuits are independent of each other, and the four switches can control the on-off of the four circuits respectively. As shown in Table 1, for example, the first switch 62 is closed to control the on-off of the first circuit 61, at this time, the second circuit 63, the third circuit 65, and the fourth circuit 67 are in the off state, and the first frequency modulation mode can be realized. The second switch 64 is closed to control the on-off of the second circuit 63, at this time, the first circuit 61, the third circuit 65, and the fourth circuit 67 are in the off state, and the second frequency modulation mode can be realized. The third switch 66 is closed to control the on-off of the third circuit 65, at this time, the first circuit 61, the second circuit 63, and the fourth circuit 67 are in the off state, and the third frequency modulation mode can be realized. The fourth switch 68 is closed to control the on-off of the fourth circuit 67, at this time, the first circuit 61, the second circuit 63, and the third circuit 65 are in the off state, and the fourth frequency modulation mode can be realized.

[0040] By analogy, the frequency modulation structure 30 can also control the on-off of any two circuits of the first circuit 61, the second circuit 63, the third circuit 65, and the fourth circuit 67, and the other two circuits are in the off state, to realize six different frequency modulation modes. The frequency modulation structure 30 can also control the on-off of any three circuits of the first circuit 61, the second circuit 63, the third circuit 65, and the fourth circuit 67, and the remaining one circuit is in the off state, to realize three different frequency modulation modes. The frequency modulation structure 30 can also control the on-off of the first circuit 61, the second circuit 63, the third circuit 65, and the fourth circuit 67 to realize the frequency modulation mode. Thus, a plurality of different combinations of frequency modulation modes are realized, and the frequency modulation effect of the frequency modulation structure 30 is improved.

[0041]

[0042] Table 1

[0043] In addition, the frequency modulation structure 30 can further include two single-pole single-throw switches, including a first circuit 61 and a second circuit 63. The first circuit 61 is provided with a first switch 62 to control the on-off of the first circuit 61, and the second circuit 63 is provided with a second switch 64 to control the on-off of the second circuit 63. The frequency modulation structure 30 can control at least one circuit path of the first circuit 61 and the second circuit 63 by closing the first switch 62 and the second switch 64 to realize multiple frequency modulation modes. The frequency modulation structure 30 can further include three single-pole single-throw switches, including the first circuit 61, the second circuit 63, and a third circuit 65. The first circuit 61 is provided with the first switch 62 to control the on-off of the first circuit 61. The second circuit 63 is provided with the second switch 64 to control the on-off of the second circuit 63. The third circuit 65 is provided with a third switch 66 to control the on-off of the third circuit 65. The frequency modulation structure 30 can control at least one circuit path of the first circuit 61, the second circuit 63, and the third circuit 65 to realize multiple frequency modulation modes, and the like, which will not be limited in the embodiments of the present application.

[0044] For example, in the embodiments of the present application, the frequency modulation circuit 31 is provided with a frequency modulation component 311, which includes at least one of a capacitive element, an inductive element, and a resistive element. In this way, only the capacitive element, or only the inductive element, or only the resistive element, or any combination of the above three elements can be used to carry a filter network to realize the frequency modulation function of the frequency modulation component 311 on the resonant component 10.

[0045] For example, taking the working of the resonant component 10 under GSM900 as an example, as shown in Figure 5 and 6 , wherein Figure 5 represents the original resonant frequency diagram of the resonant component 10, the horizontal axis represents the frequency in gigahertz, and the vertical axis represents the energy intensity. The lowest point of the curve in the figure corresponds to the frequency value representing the original resonant frequency of the resonant component 10. As can be seen from Figure 5 , the original resonant frequency of the resonant component 10 is close to 2.7GHz (gigahertz), i.e. 2700MHz, which falls within the 3 times frequency range of 2640.6-2744.4MHz of the main frequency of the antenna. At this time, the energy of the antenna is easily radiated out through the resonant component 10, causing radiation clutter.

[0046] In the second frequency modulation circuit 32 of the frequency modulation structure 30, when the second frequency modulation component 321 is a resistive element, the resistance value of the resistive element can be set to 0Ω (ohm), and the second frequency modulation circuit 32 path is controlled by closing the second switch 322. The 0Ω resistive element makes the resonant structure directly grounded. At this time, the adjusted resonant frequency diagram of the resonant component 10 is as shown in Figure 6As shown, the horizontal axis represents frequency in gigahertz (GHz), and the vertical axis represents energy intensity. The frequency value corresponding to the lowest point of the curve in the figure represents the resonant frequency of the resonator 10 after adjustment. Figure 6 It can be seen that after adjustment, the resonant frequency of the resonator 10 is close to 0.9 GHz (gigahertz), that is, 900 MHz, which avoids the radiation frequencies of the second and third harmonic frequencies of the antenna, and effectively improves the radiation spurious problem of the resonator 10.

[0047] Specifically, in this embodiment, the frequency modulation structure 30 is one of a variable capacitor and a filter. The variable capacitor is a capacitor whose capacitance can be adjusted within a certain range, enabling it to change the resonant frequency of the resonant element 10. The filter is a frequency selection device that allows a preset frequency in the signal emitted by the resonant element 10 to pass through, thereby attenuating other frequencies, and also enabling it to change the resonant frequency of the resonant element 10.

[0048] For example, in this embodiment of the application, the electronic device further includes a bracket 40 and a motherboard 50. Both the bracket 40 and the motherboard 50 are disposed on the main body of the device. The bracket 40 is connected to the resonant element 10, and the motherboard 50 is connected to the bracket 40. At least a portion of the second grounding point 11 passes through the bracket 40 and is connected to the first grounding point 20. The frequency modulation structure 30 is electrically connected to the motherboard 50. In this way, a coordinated connection is achieved between the resonant element 10, the first grounding point 20, the resonant structure, and the various components of the electronic device, namely the bracket 40 and the motherboard 50.

[0049] Optionally, in the embodiments of this application, such as Figure 1 As shown, both the first grounding point 20 and the frequency modulation structure 30 are located on the motherboard 50. In this way, the first grounding point 20 can be located on the motherboard 50 without the need for a separate space, and since the frequency modulation structure 30 is located on the motherboard 50, it can be directly grounded through the motherboard 50.

[0050] In some alternative embodiments of this application, such as Figure 2 As shown, the electronic device also includes at least one connector 41, which connects the bracket 40 and the motherboard 50. The frequency modulation structure 30 is electrically connected to the bracket 40. Thus, by connecting the bracket 40 and the motherboard 50 through the connector 41, the frequency modulation structure 30 can be electrically connected to the bracket 40. Since the bracket 40 and the motherboard 50 are connected through the connector 41, the frequency modulation structure 30 can be grounded through the connection between the bracket 40 and the connector 41 and the motherboard 50. This optimizes the layout space within the electronic device, saves the space required for direct grounding of the resonator 10 and the motherboard 50, avoids the negative impact of excessive space occupation, and improves space utilization.

[0051] For example, in the embodiment of the present application, the connecting piece 41 comprises at least one of a screw, a screw, a bolt, a stud, so as to realize the communication of the support 40 and the main plate 50. The specific type of the connecting piece 41 in the embodiment of the present application can not be limited.

[0052] Specifically, in the embodiment of the present application, the first grounding point 20 and the frequency modulation structure 30 are both arranged on the support 40. In this way, the first grounding point 20 can be arranged on the support 40 without the need for a separate space, and the frequency modulation structure 30 arranged on the support 40 can make the frequency modulation structure 30 communicate with the main plate 50 through the support 40 and the connecting piece 41 to realize grounding.

[0053] For example, in the embodiment of the present application, the resonant piece 10 comprises at least one of a camera decoration ring, a screen and a card holder. In actual application, the camera decoration ring, the screen and the card holder of the electronic device can also emit a resonant frequency during use, and there is a problem that the resonant frequency falls within the radiation frequency range of the antenna and causes radiation interference. Therefore, the embodiment of the present application can adjust the resonant frequency of at least one of the camera decoration ring, the screen and the card holder to the target frequency through the frequency modulation structure 30, so as to avoid the radiation frequency of the antenna and avoid the problem of radiation interference.

[0054] In summary, the electronic device in the embodiment of the present application can at least have the following advantages:

[0055] In the embodiment of the present application, the electronic device comprises: a device main body, an antenna, a resonant piece, a first grounding point and a frequency modulation structure; the antenna, the resonant piece, the first grounding point and the frequency modulation structure are all arranged on the device main body; the resonant piece is provided with a second grounding point; the first grounding point is connected to the second grounding point, and the frequency modulation structure is electrically connected to the second grounding point through the first grounding point, so as to adjust the resonant frequency of the resonant piece to a target frequency, and the target frequency is outside the radiation frequency range of the antenna. In this way, the resonant frequency of the resonant piece can be adjusted through the frequency modulation structure, and when the resonant frequency of the resonant piece falls within the radiation frequency range of the antenna, the resonant frequency of the resonant piece can be adjusted to be higher or lower, so that the resonant frequency is outside the radiation frequency range of the antenna. Therefore, the energy of the antenna cannot be radiated through the resonant piece, and the problem of radiation interference of the electronic device is solved. In this way, the number of grounding points of the resonant piece is not limited by the space layout of the electronic device, and assembly is avoided. It also avoids the high production cost caused by improving the grounding mode of the grounding point. It also avoids the influence of the color process of the resonant piece on the electrostatic discharge and appearance of the electronic device, and improves the user experience.

[0056] In the embodiments of the present application, the electronic device can include, but is not limited to, any one of a mobile phone, a tablet computer, and a wearable device, and the specific type of the electronic device can not be limited in the embodiments of the present application.

[0057] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electronic device, comprising: The electronic device comprises a device body, an antenna, a resonant piece, a first grounding point and a frequency modulation structure; The antenna, the resonant piece, the first grounding point and the frequency modulation structure are arranged on the device body, and the resonant piece is at least one of a camera decoration ring, a screen and a card holder; The resonant piece is provided with a second grounding point; The first grounding point is connected to the second grounding point, and the frequency modulation structure is electrically connected to the second grounding point through the first grounding point to adjust the resonant frequency of the resonant piece to a target frequency outside the radiation frequency range of the antenna to avoid the radiation frequency of the antenna; The frequency modulation structure comprises at least two frequency modulation circuits, and the at least two frequency modulation circuits are electrically connected to the first grounding point respectively, and the frequency modulation ranges of the at least two frequency modulation circuits are different.

2. The electronic device of claim 1, wherein, The frequency modulation structure comprises a switch piece and a plurality of frequency modulation circuits, the switch piece is arranged between the at least two frequency modulation circuits respectively, and the switch piece is used for connecting the at least two frequency modulation circuits and controlling the at least two frequency modulation circuits to combine with each other.

3. The electronic device of claim 1 or 2, wherein, The frequency modulation circuit is provided with a frequency modulation piece, and the frequency modulation piece comprises at least one of a capacitor element, an inductor element and a resistor element.

4. The electronic device of claim 1, wherein, The frequency modulation structure is one of a variable capacitor and a filter.

5. The electronic device of claim 1, wherein, The electronic device further comprises a support and a mainboard, and the support and the mainboard are arranged on the device body; The support is connected to the resonant piece, the mainboard is connected to the support, at least part of the second grounding point is arranged in the support and connected to the first grounding point, and the frequency modulation structure is electrically connected to the mainboard.

6. The electronic device of claim 5, wherein, The first grounding point and the frequency modulation structure are arranged on the mainboard.

7. The electronic device of claim 5, wherein, The electronic device further comprises at least one connecting piece; The connecting piece is connected between the support and the mainboard, and the frequency modulation structure is electrically connected to the support.

8. The electronic device of claim 7, wherein, The first grounding point and the frequency modulation structure are arranged on the support. The first grounding point and the frequency modulation structure are arranged on the support.

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