Electronic device

Abstract

The utility model discloses electronic equipment, and relates to the technical field of electronic equipment. The electronic equipment comprises a network communication antenna, and the network communication antenna comprises a radiator. The radiating body is annular, the radiating body is provided with a feeding point used for receiving a radio frequency signal, the radiating body is provided with at least one coupling unit, and the coupling unit can generate interdigital capacitance.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and more particularly to an electronic device. Background Technology

[0002] Smartwatches are electronic devices worn on the wrist that provide online functions such as making calls, chatting, and making mobile payments.

[0003] Network functions require the configuration of network antennas. Currently, designers make full use of structure and space, using the metal frame of the smartwatch as the antenna structure.

[0004] However, the metal frame, as an external component of a smartwatch, has limitations in its structural design. It cannot be interrupted and is relatively far from the wrist, which has a significant impact on the radiation effect of the network antenna, especially the low-frequency antenna, resulting in poor antenna performance. Utility Model Content

[0005] This application provides an electronic device, which includes a network communication antenna, the network communication antenna including a radiator;

[0006] The radiator is ring-shaped and has a feed point for receiving radio frequency signals. The radiator also has at least one coupling unit that can generate interdigital capacitance.

[0007] In some modified embodiments of this application, the aforementioned electronic device includes an even number of coupling units;

[0008] An even number of the coupling units are arranged symmetrically with respect to a first designated straight line;

[0009] Wherein, the first designated straight line is parallel to the user's arm.

[0010] In some modified embodiments of this application, the aforementioned electronic device includes an odd number of coupling units;

[0011] One of the odd number of coupling units is located on a first designated straight line, and the remaining coupled number of coupling units are symmetrically arranged with respect to the first designated straight line.

[0012] Wherein, the first designated straight line is parallel to the user's arm.

[0013] In some modified embodiments of this application, the aforementioned electronic device, wherein the coupling unit includes at least a first coupling portion and a second coupling portion;

[0014] The first coupling portion and the second coupling portion extend in opposite directions around the center of the radiator, and the first coupling portion and the second coupling portion are parallel and spaced apart.

[0015] In some modified embodiments of this application, the aforementioned electronic device, wherein the first coupling portion includes two first coupling members, the two first coupling members are parallel and spaced apart, and the ends of the two first coupling members opposite to the second coupling portion are connected to form a first opening at the end of the first coupling member facing the second coupling portion;

[0016] The second coupling portion includes two second coupling members, which are parallel and spaced apart. The ends of the two second coupling members opposite to the first coupling portion are connected to form a second opening at the end of the second coupling member facing the first coupling portion.

[0017] The first opening and the second opening are opposite to each other and are interlocked so that the first coupling member and the second coupling member are alternately spaced apart.

[0018] In some modified embodiments of this application, the aforementioned electronic device is provided with a switch on the radiator;

[0019] The switch has at least one inductance value, and the switch is connected to the controller signal of the electronic device to provide a specified inductance value according to the control signal corresponding to a specified frequency band radio frequency signal;

[0020] The switch is connected in parallel with the radiator.

[0021] In some modified embodiments of this application, the aforementioned electronic device, wherein the coupling unit and the power supply point are respectively located on both sides of a second designated straight line, the angle between the power supply point and the switch is 30 degrees to 90 degrees, and the power supply point and the switch are symmetrical with respect to a first designated straight line;

[0022] Wherein, the first designated line is parallel to the user's arm, and the second designated line is perpendicular to the first designated line.

[0023] In some modified embodiments of this application, the aforementioned electronic device includes a housing;

[0024] The shell has a receiving space;

[0025] The radiator is attached to the bottom wall of the housing within the accommodating space;

[0026] The thickness of the bottom wall is 0.5mm-3mm;

[0027] The radiator has a radial dimension of not less than 1 mm along the ring in which it is located.

[0028] In some modified embodiments of this application, the aforementioned electronic device further includes a circuit board;

[0029] The circuit board is disposed within the receiving space;

[0030] The circuit board and the radiator are arranged sequentially in the thickness direction of the electronic device;

[0031] The distance between the circuit board and the radiator is not less than 1 mm.

[0032] In some modified embodiments of this application, the aforementioned electronic device further includes a display screen;

[0033] The display screen and the radiator are spaced apart in the thickness direction of the electronic device. Attached Figure Description

[0034] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0035] Figure 1 A schematic diagram of the structure of the electronic device provided in this embodiment is shown.

[0036] Figure 2 A schematic diagram of the structure of the antenna radiator in the electronic device provided in this embodiment is shown.

[0037] Figure 3 The equivalent circuit diagram of the antenna radiator in the electronic device provided in this embodiment is shown schematically.

[0038] Figure 4 The diagram schematically illustrates a first structural schematic of the coupling unit in the antenna radiator of the electronic device provided in this embodiment;

[0039] Figure 5 The diagram schematically illustrates a second structural schematic of the coupling unit in the antenna radiator of the electronic device provided in this embodiment;

[0040] Figure 6 The diagram schematically illustrates a third structural diagram of the coupling unit in the antenna radiator of the electronic device provided in this embodiment;

[0041] Figure 7 The diagram illustrates the curve of the radiation efficiency of the antenna in the electronic device provided in this embodiment as a function of frequency.

[0042] Figure 8 The diagram illustrates the changes in the radiation efficiency of the antenna in the electronic device provided in this embodiment under free space and in the presence of an arm, respectively.

[0043] Figure 9 The diagram illustrates the change in reflection coefficient when the antenna radiator and the metal frame radiator in the electronic device provided in this embodiment are in an unmatched state.

[0044] Figure 10 The Smith chart of the antenna radiator and the metal frame radiator in the electronic device provided in this embodiment under a mismatched state is illustrated schematically.

[0045] Figure 11 The XOZ plane gain pattern of the network communication antenna in the electronic device of this embodiment is schematically shown;

[0046] Figure 12 The surface current distribution diagram of the radiator and circuit board mating system in the electronic device of this embodiment is schematically shown.

[0047] The reference numerals in the attached diagram are as follows: Radiator 1, Feed point 11, Coupling unit 2, First coupling part 21, First coupling element 211, First opening 212, Second coupling part 22, Second coupling element 221, Second opening 222, Switch 3, Circuit board 4, Display screen 5, Housing 6, Middle frame 7, Arm 8, First designated straight line a, Second designated straight line b. Detailed Implementation

[0048] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0049] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0050] The technical solution of this application embodiment is to solve the above-mentioned technical problems, and the general idea is as follows:

[0051] Example 1

[0052] Reference Appendix Figure 1 The electronic device provided in this application embodiment includes a network communication antenna, which includes a radiator 1;

[0053] The radiator 1 is ring-shaped, and a feed point 11 is provided on the radiator 1 for receiving radio frequency signals. At least one coupling unit 2 is provided on the radiator 1, and the coupling unit 2 can generate interdigital capacitance.

[0054] Understandably, in order to solve the technical problem of poor radiation effect of network antennas in existing smartwatches, the electronic device provided in this embodiment forms a coupling unit 2 with interdigitated capacitors on the ring radiator 1 of the network communication antenna, and uses the coupling unit 2 to form an opening to realize signal overflow, increase signal bandwidth, expand radiation range and improve antenna effect.

[0055] The electronic device provided in this embodiment may be, but is not limited to, a smartwatch, a smartwatch with calling capabilities, or a smart bracelet. The network communication antenna within the electronic device may be, but is not limited to, an antenna that meets 4G or 5G communication requirements. The following description will use an antenna operating in a low-frequency band (0-1GHz), for example, an antenna operating in the 824MHz-960MHz range. The network communication antenna includes an electrically connected radio frequency (RF) chip and a radiator 1. The RF antenna generates RF signals in the required frequency band. The radiator 1 effectively converts the RF energy of the RF signal generated by the RF chip into electromagnetic waves for external transmission, or receives electromagnetic waves in space and converts them into RF current. The RF chip is electrically connected to the radiator 1 through a feed point 11 on the radiator 1. In this embodiment, the radiator 1 is set as a ring, which may be, but is not limited to, any form of ring such as a circular ring, rectangular ring, or elliptical ring, as long as it fits the shape of the electronic device. Accordingly, the electronic device may include a circuit board 4, a display screen 5, and a housing 6. The radiator 1, the circuit board 4, and the display screen 5 may be arranged sequentially and at intervals along the thickness direction of the entire device within the housing 6. The display surface of the display screen 5 may be exposed through the housing 6. The radio frequency chip is disposed on the circuit board 4. The radiator 1 is disposed within the housing and located on the side of the circuit board 4 away from the display screen 5, so that the radiator 1 is closer to the wearer's wearing part, and the radio frequency energy radiation can be better reflected towards the sky, expanding the radiation range outside the wearing part. It is understood that the radio frequency chip and the radiator 1 may be connected by means of a spring contacting the feed point 11. This configuration is easily understood by those skilled in the art and will not be described in detail here.

[0056] In this embodiment, coupling unit 2 can transfer energy from one transmission line or waveguide to another without direct electrical connection. Coupling unit 2 generates interdigital capacitance, meaning it includes parallel and spaced metal electrodes. When a voltage is applied to these electrodes, an electric field is formed between them. The small distance between the electrodes results in a large facing area and thus a high capacitance, meeting the application requirements for a large bandwidth. In this embodiment, coupling unit 2 includes at least two parallel and spaced metal electrodes, such as two, three, or four, arranged in an alternating finger-like pattern. The length and spacing of the metal electrodes can be designed and adjusted according to actual needs, as long as the bandwidth requirements are met. In this embodiment, the more coupling units 2 available, the better, as more coupling units 2 result in a larger antenna bandwidth and a wider radiation range. It is easy to understand that in this embodiment, radiator 1 transmits and radiates radio frequency signals or energy through coupling unit 2, while the open structure formed by coupling unit 2 allows signal leakage, expanding the radiation range.

[0057] According to the above, the electronic device provided in this application has at least one coupling unit 2 capable of forming an interdigital capacitance on the radiator 1 of the antenna. By utilizing the break in the structure, the signal overflow is achieved, the signal bandwidth is increased, the radiation range is expanded, and thus the antenna effect is improved; thereby solving the technical problem of poor radiation effect of network antennas in existing smartwatches.

[0058] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships, such as A and / or B. Specifically, it can be understood as: A and B can be included at the same time, A can exist alone, or B can exist alone, and any of the above three situations can be met.

[0059] Furthermore, the electronic device provided in this embodiment may, in specific implementations, include either an even number of coupling units 2 or an odd number of coupling units 2:

[0060] The first method, see attached document. Figure 2 The radiator 1 may include an even number of coupling units 2, which are symmetrically arranged with respect to a first designated straight line a; wherein the first designated straight line a is parallel to the user arm 8.

[0061] Understandably, in order to maximize the antenna radiation range, the number of coupling units 2 in this embodiment can be set to an even number, such as two. In this configuration, to ensure uniform radiation range and accuracy of transmitted and detected signals, the even number of coupling units 2 can be arranged symmetrically and at equal intervals relative to the first designated straight line a. Figure 2As shown; the first designated straight line a is parallel to the arm 8 and passes through the center of the radiator 1, so that the radiation energy emitted or detected by the radiator 1 when it is working is symmetrical with respect to the arm 8, and there will be no problem of uneven energy on both sides, weak or inaccurate signal detection on both sides, which effectively improves the overall performance of the network communication antenna.

[0062] The second type is that the radiator 1 may include an odd number of coupling units 2; one of the coupling units 2 is located on a first designated straight line a, and the remaining coupling units 2 are symmetrically arranged with respect to the first designated straight line a and at equal intervals; wherein, the first designated straight line a is parallel to the user's arm 8.

[0063] Understandably, in this configuration, the first designated line a is the same as the previously mentioned first designated line a, both being straight lines parallel to arm 8 and passing through the center of radiator 1. To ensure uniform radiation range and accuracy of transmitted and detected signals, in this configuration, one coupling unit 2 is placed on the first designated line a, and the remaining even-numbered coupling units 2 are symmetrically arranged relative to the first designated line a. This ensures that the number of coupling units 2 on both sides of the first designated line a is equal, thus ensuring that the radiated energy emitted or detected by radiator 1 is symmetrical relative to arm 8, preventing uneven energy distribution on both sides, weakened or inaccurate signal detection on both sides, and effectively improving the overall performance of the network communication antenna.

[0064] Further, see Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 In the specific implementation of the electronic device provided in this embodiment, the coupling unit 2 includes at least a first coupling part 21 and a second coupling part 22; the first coupling part 21 and the second coupling part 22 extend in opposite directions around the center of the radiator 1, and the first coupling part 21 and the second coupling part 22 are parallel and spaced apart.

[0065] It is understandable that, in order to achieve the formation of an interdigital capacitor by the coupling unit 2, in this embodiment, the coupling unit 2 is configured to include a first coupling part 21 and a second coupling part 22. Furthermore, to accommodate the annular radiator 1, in this embodiment, the first coupling part 21 and the second coupling part 22 extend in opposite directions around the center of the radiator 1, for example... Figure 2 As shown, when the radiator 1 is an annular shape, both the first coupling portion 21 and the second coupling portion 22 are arc-shaped around the circle of the radiator 1, and they are parallel and spaced apart in the radial direction of the radiator 1. Accordingly, the first coupling portion 21 and the second coupling portion 22 include at least one metal electrode, and can be configured in at least the following ways:

[0066] The first method, see attached document. Figure 4Both the first coupling part 21 and the second coupling part 22 include a metal electrode, and the two metal electrodes are arranged at a radial distance along the radiator 1.

[0067] The second method is detailed in the appendix. Figure 5 Both the first coupling portion 21 and the second coupling portion 22 include two parallel and spaced metal electrodes. Specifically, the first coupling portion 21 includes two first coupling members 211, which are parallel and spaced apart. The ends of the two first coupling members 211 facing away from the second coupling portion 22 are connected to form a first opening 212 at the end of the first coupling member 211 facing the second coupling portion 22. The second coupling portion 22 includes two second coupling members 221, which are parallel and spaced apart. The ends of the two second coupling members 221 facing away from the first coupling portion 21 are connected to form a second opening 222 at the end of the second coupling member 221 facing the first coupling portion 21. The first opening 212 and the second opening 222 are opposite to each other and interlocked so that the first coupling members 211 and the second coupling members 221 are alternately spaced apart.

[0068] The third method, see attached document. Figure 6 Combined with the appendix Figure 5 As can be understood from the presentation, in this configuration, the first coupling part 21 includes three mutually spaced first coupling members 211, forming two first openings 212, and the second coupling part 22 includes two mutually spaced second coupling members 221, forming a second opening 222. Each second coupling member 221 is inserted into a first opening 212, and the first coupling members 211 and the second coupling members 221 are arranged alternately at intervals.

[0069] Furthermore, it is easy to understand that when the number of coupling units 2 in this embodiment is greater than 1, the forms of each coupling unit can be the same or different. For example, when the radiator includes two coupling units 2, one of the coupling units 1 can be... Figure 4 In the form of another coupling unit 1, it can be... Figure 4 The form can also be Figure 5 or Figure 6 For example, under the premise of meeting bandwidth requirements, setting the two coupling units 2 in different forms can improve the spatial coordination of the radiator 1 and facilitate avoidance with other components in the electronic device; for example, setting the two coupling units 2 in the same form can effectively increase the bandwidth and expand the radiation range of the antenna.

[0070] Further, see Appendix Figure 2 and attached Figure 3In the specific implementation of the electronic device provided in this embodiment, the radiator 1 is provided with a switch 3; the switch 3 has at least one inductance value, and the switch 3 is connected to the controller signal of the electronic device to provide a specified inductance value according to the control signal corresponding to the specified frequency band radio frequency signal; wherein, the switch 3 is connected in parallel with the radiator 1.

[0071] It is understandable that antennas operating at different frequencies require different distances or different inductance compensations to meet operational requirements. Therefore, to enable the selection and adjustment of the inductance load, this embodiment includes a switch 3. Switch 3 includes at least one inductance value, such as a 15nH or 18nH inductor for low-frequency operation, or multiple inductors including 6.8nH, to effectively select and adjust the inductance load for different operating frequency bands. Switch 3 can be a PIN diode switch, a FET (field-effect transistor) switch, a microelectromechanical system (MEMS) switch, etc. In this embodiment, switch 3 is connected in parallel with radiator 1 and grounded, forming a parallel resonant network, i.e., a band-stop filter, with capacitor C1 between circuit board 4 and radiator 1, to obtain a larger bandwidth. Accordingly, refer to the attached... Figure 3 Feedport refers to feed point 11. L1 is the inductance of the radiator 1 between feed point 11 and the first coupling unit 2 along the counterclockwise direction in the figure. L2 is the inductance of the radiator 1 between the two coupling units 2. L3 is the inductance of the radiator 1 between the second coupling unit 2 and the switch 3. C0 is the interdigital capacitance C0 generated by the coupling unit 2, which is connected in series with L2 / 2 to form a series LC resonant network, i.e., a bandpass filter, which filters specific frequencies. In this embodiment, the bandwidth can be increased by decreasing C1, increasing the inductance of the switch 3, increasing C0, and decreasing L2.

[0072] Furthermore, according to Where f is the operating frequency, L is the inductance, and C is the capacitance. When f corresponds to a low frequency, its value is relatively small, so L and / or C need to be increased. In this embodiment, in order to increase L and / or C to ensure that the antenna has a sufficiently large operating bandwidth in the low-frequency band, the following settings can be adopted:

[0073] The first method, see attached document. Figure 2 In the specific implementation of the electronic device provided in this embodiment, the coupling unit 2 and the power supply point 11 are respectively located on both sides of the second designated straight line b, the included angle between the power supply point 11 and the switch 3 is 30 degrees to 90 degrees, and the power supply point 11 and the switch 3 are symmetrical with respect to the first designated straight line a; wherein, the first designated straight line a is parallel to the user arm 8, and the second designated straight line b satisfies the perpendicular condition with the first designated straight line a.

[0074] In this configuration, the angle between the feed point 11 and the switch 3 (i.e., the grounding point) is small, ensuring that the trace between the feed point 11 and the coupling unit 2 is long enough to obtain a larger inductance value and a larger bandwidth. At the same time, the feed point 11 and the switch 3 will not be too close to cause a short circuit. The feed point 11 and the switch 3 can be set to be non-symmetrical with respect to the first designated straight line a, which simplifies the manufacturing process. Alternatively, the feed point 11 and the switch 3 can be set to be symmetrical with respect to the first designated straight line a, which can further enhance the uniformity and accuracy of signal radiation by coordinating with the symmetry of the coupling unit 2.

[0075] The second method is detailed in the appendix. Figure 5 In the specific implementation of the electronic device provided in this embodiment, the length of the first coupling member 211 is d, and the distance between the first coupling member 211 and the second coupling member 221 is s. In this setting, the interdigital capacitance generated between the two can be increased by increasing d or decreasing a.

[0076] Further, see Appendix Figure 1 In the specific implementation of the electronic device provided in this embodiment, the radiator 1 is attached to the bottom wall of the housing 6 within the accommodating space of the housing 6; wherein the thickness of the bottom wall is 0.5mm-3mm; and the dimension of the radiator 1 along the radial direction of the ring in which it is located is not less than 1mm.

[0077] Understandably, in order to improve the signal strength and radiation range of the antenna, in this embodiment, the housing 6 can be set in the form of an open slot, the radiator 1 is set on the bottom of the slot, the cylindrical metal frame 7 extends upward from the slot, the circuit board 4 is fixed inside the frame 7, and the display screen 5 is set on the side of the frame away from the housing 6 so that the display surface is exposed. In this setting, the smaller the thickness of the bottom of the housing 6, the better the reflection effect of the user's wearing part (which can be but is not limited to the arm 8) on the energy radiated by the radiator 1 towards the sky, and the signal strength and radiation range will both increase. In this embodiment, the thickness can be selected between 0.5mm and 3mm, for example: 0.5mm, 1mm, 3mm. Accordingly, to expand the bandwidth and radiation range, in this embodiment, the radial dimension of the radiator 1 along its ring can be set to at least 1 mm. Taking the radiator 1 as a ring as an example, the difference between the radius of the outer ring and the radius of the inner ring of the radiator 1 is at least 1 mm. The radii of the outer ring and the inner ring of the radiator 1 can be designed and adjusted according to the size of the electronic device. For example, if the overall radius of the electronic device is 22 mm, then the outer ring radius of the radiator 1 can be set to 18 mm, and the inner diameter of the inner ring can be at least 15 mm to meet the requirements of bandwidth and radiation range. Furthermore, in this embodiment, the distance between the circuit board 4 and the radiator 1 in the thickness direction of the electronic device can be set to greater than or equal to 1 mm to avoid short circuits. Under this setting, refer to the attached... Figure 3There is a capacitor C1 between the circuit board 4 and the radiator 1. The greater the distance between the circuit board 4 and the radiator 1, the smaller C1 becomes. In this embodiment, C1 needs to be smaller to increase the bandwidth.

[0078] Furthermore, tests were conducted with two coupling units 2 installed on the radiator 1. The specific form of the coupling unit 2 is as follows: Figure 5 For example, in the form shown in the figure, d can be 1.8mm and s can be 0.3mm.

[0079] Reference Appendix Figure 7 In the figure, the solid line represents the network communication antenna of this embodiment, and the dashed line represents the antenna using the middle frame as the radiator. In the 0.6-1GHz low frequency band, the network communication antenna of this embodiment has higher radiation efficiency, which meets the product usage requirements.

[0080] Reference Appendix Figure 8 In the figure, the solid line represents the electronic device of this embodiment being worn on the arm 8, and the dashed line represents the electronic device of this embodiment being in free space. In the 0.6-1GHz low frequency band, the radiation efficiency of the network communication antenna is higher when worn on the arm 8, which meets the product usage requirements.

[0081] Reference Appendix Figure 9 In the figure, the solid line represents the network communication antenna of this embodiment, the dashed line represents the antenna with the middle frame as the radiator, and the deepest point of the trough represents a resonance. The solid line has 5 resonance points, while the dashed line has only 3 resonance points. At the same time, near 1GHz, the solid line has a deeper resonance state while the dashed line does not, indicating that the network communication antenna of this embodiment has a wider bandwidth and multimode resonance.

[0082] Reference Appendix Figure 10 In the figure, the solid line represents the network communication antenna of this embodiment, the dashed line represents the antenna using the middle frame as the radiator, and an elliptical circle in the figure represents a resonance. The solid line includes more resonances than the dashed line, indicating that the network communication antenna of this embodiment has a wider bandwidth and multimode resonance.

[0083] Reference Appendix Figure 11 In the figure, the left and right extended columnar structures are arms 8. The horizontal direction is the X-axis. If the left pin = 0, the left side is positive; if the right pin = 180, the right side is negative. The vertical direction is the Z-axis. The top is positive and the bottom is negative. The center point is the origin (0,0). The irregular ring in the figure is the radiation direction of the network communication antenna provided in this embodiment. The figure shows that the maximum radiation direction is close to 45 degrees. This means that the network communication antenna of this embodiment has the maximum radiation energy relative to the arm 8 at a 45-degree angle to the sky. The signal coverage will not be affected when the arm 8 is naturally hanging down or moving. The stability and coverage are both good.

[0084] Reference Appendix Figure 12The arrows in the diagram indicate the direction of current flow. The current flows along the X-axis, parallel to arm 8, on circuit board 4. The current flows along radiator 1, and the overall current direction is symmetrical along the X-axis. Arm 8 provides a support effect, maximizing the coupling effect and enabling efficient reflection towards the sky. There is a zero point at the leftmost 9 o'clock position in the diagram, which is a half-wavelength loop antenna. This antenna type is easily understood by those skilled in the art and will not be elaborated upon here.

[0085] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electronic device, comprising a network communication antenna, characterized in that: The network communication antenna includes a radiator; The radiator is ring-shaped and has a feed point for receiving radio frequency signals. The radiator also has at least one coupling unit that can generate interdigital capacitance.

2. The electronic device according to claim 1, characterized in that: Includes an even number of coupling units; An even number of the coupling units are arranged symmetrically with respect to a first designated straight line; Wherein, the first designated straight line is parallel to the user's arm.

3. The electronic device according to claim 1, characterized in that: Includes an odd number of coupling units; One of the odd number of coupling units is located on a first designated straight line, and the remaining coupled number of coupling units are symmetrically arranged with respect to the first designated straight line. Wherein, the first designated straight line is parallel to the user's arm.

4. The electronic device according to claim 1, characterized in that: The coupling unit includes at least a first coupling part and a second coupling part; The first coupling portion and the second coupling portion extend in opposite directions around the center of the radiator, and the first coupling portion and the second coupling portion are parallel and spaced apart.

5. The electronic device according to claim 4, characterized in that: The first coupling portion includes two first coupling members, which are parallel and spaced apart. The ends of the two first coupling members opposite to the second coupling portion are connected to form a first opening at the end of the first coupling member facing the second coupling portion. The second coupling portion includes two second coupling members, which are parallel and spaced apart. The ends of the two second coupling members opposite to the first coupling portion are connected to form a second opening at the end of the second coupling member facing the first coupling portion. The first opening and the second opening are opposite to each other and are interlocked so that the first coupling member and the second coupling member are alternately spaced apart.

6. The electronic device according to claim 1, characterized in that: The radiator is equipped with a switch; The switch has at least one inductance value, and the switch is connected to the controller signal of the electronic device to provide a specified inductance value according to the control signal corresponding to a specified frequency band radio frequency signal; The switch is connected in parallel with the radiator.

7. The electronic device according to claim 6, characterized in that: The coupling unit and the feed point are located on opposite sides of the second designated straight line, and the angle between the feed point and the switch is 30 degrees to 90 degrees. The feed point and the switch are symmetrical with respect to the first designated straight line. Wherein, the first designated line is parallel to the user's arm, and the second designated line is perpendicular to the first designated line.

8. The electronic device according to claim 1, characterized in that: Includes the casing; The shell has a receiving space; The radiator is attached to the bottom wall of the housing within the accommodating space; The thickness of the bottom wall is 0.5mm-3mm; The radiator has a radial dimension of not less than 1 mm along the ring in which it is located.

9. The electronic device according to claim 8, characterized in that: It also includes circuit boards; The circuit board is disposed within the receiving space; The circuit board and the radiator are arranged sequentially in the thickness direction of the electronic device; wherein the distance between the circuit board and the radiator is not less than 1 mm.

10. The electronic device according to claim 1 or 8, characterized in that: It also includes the display screen; The display screen and the radiator are spaced apart in the thickness direction of the electronic device.

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