An electronic device

Abstract

The embodiment of the application discloses an electronic device, which comprises a metal ring capable of being sleeved on a specific part of a user, a first outer surface of the metal ring is provided with a first groove in a thickness direction, and the electronic device further comprises a sheet-shaped antenna arranged around the first groove, and a first gap exists between opposite ends of the sheet-shaped antenna; an insulating material is filled between the sheet-shaped antenna and the first groove, the sheet-shaped antenna is maintained at a first distance between the insulating material and a groove bottom of the first groove, and the first groove forms a reflection plate of the sheet-shaped antenna.

Description

Technical Field

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

[0002] Ring-shaped wearable devices such as rings and bracelets are small in size, making antenna design difficult. Furthermore, the human body absorbs a lot of electromagnetic energy, resulting in poor antenna performance. Summary of the Invention

[0003] This application provides an electronic device, including the following technical solution:

[0004] An electronic device, comprising:

[0005] A metal ring that can be fitted onto a specific part of an object, wherein a first groove is provided on the first outer surface of the metal ring along the thickness direction;

[0006] A sheet antenna is disposed around the first groove, and a first gap exists between the opposite ends of the sheet antenna;

[0007] The sheet antenna and the first groove are filled with insulating material, and the sheet antenna is maintained at a first distance from the bottom of the first groove by the insulating material. The first groove forms a reflector for the sheet antenna.

[0008] Preferably, in the aforementioned electronic device, the sheet antenna covers the opening of the first groove, and the sheet antenna may or may not protrude from the first outer surface; and / or,

[0009] The metal ring includes an inner surface, which is the surface that contacts the specific part when the metal ring is fitted onto the specific part, and the first outer surface is the surface that is disposed opposite to the inner surface.

[0010] Preferably, in the aforementioned electronic device, there is a second gap between the patch antenna and the two groove walls of the first groove, the second gap forming at least a partial clearance area of ​​the patch antenna.

[0011] Preferably, in the aforementioned electronic device, the patch antenna is provided with a feed point and a ground point, and the feed point and the ground point are spaced apart by a quarter or three-quarters of the circumference of the circumference of the patch antenna.

[0012] Preferably, in the aforementioned electronic device, the first gap is located at the midpoint between the power supply point and the grounding point.

[0013] Preferably, in the aforementioned electronic device, the first gap and / or the second gap are adjustable; and / or,

[0014] The dimensions of the first gap and / or the second gap are 0.5mm to 1.2mm.

[0015] The aforementioned electronic device, preferably, further includes:

[0016] A non-metallic cover plate is disposed on the sheet antenna, the non-metallic cover plate protruding or not protruding from the first outer surface.

[0017] The aforementioned electronic device, preferably, further includes:

[0018] An aperture tuning circuit is used to adjust the electrical length of the portion of the patch antenna that includes the first gap between the feed point and the ground point.

[0019] Preferably, in the aforementioned electronic device, the aperture tuning circuit includes a capacitor or an inductor.

[0020] The aforementioned electronic device, preferably, further includes:

[0021] A matching circuit is used to achieve impedance matching of the patch antenna. One end of the matching circuit is connected to the feed point, and the other end is connected to the functional module of the electronic device.

[0022] As can be seen from the above solutions, the electronic device provided in this application includes a metal ring that can be fitted onto a specific part of a user object. A first groove is formed on the first outer surface of the metal ring along its thickness direction. The electronic device also includes a sheet antenna surrounding the first groove, with a first gap between the opposite ends of the sheet antenna. An insulating material is filled between the sheet antenna and the first groove, and the sheet antenna is maintained at a first distance from the bottom of the first groove through the insulating material. The first groove forms a reflector for the sheet antenna. Based on this application, when the electronic device is fitted onto a specific part of a target object, the electromagnetic energy radiated by the sheet antenna towards that specific part of the user object is reflected by the first groove of the metal ring, thereby reducing the absorption of electromagnetic energy radiated by the sheet antenna by the user object and improving the performance of the sheet antenna. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1a A schematic diagram of an overall structure of an electronic device provided in an embodiment of this application;

[0025] Figure 1bA schematic diagram of the components of an electronic device provided in an embodiment of this application;

[0026] Figure 2 An exploded structural diagram of an electronic device provided in an embodiment of this application;

[0027] Figure 3 An example diagram of the matching circuit and aperture tuning circuit provided in the embodiments of this application;

[0028] Figure 4a A current distribution diagram of the patch antenna operating at 2.4 GHz when the electronic device provided in this application is fitted onto a finger model;

[0029] Figure 4b A current distribution diagram of the patch antenna operating at 5.5 GHz when the electronic device provided in this application is fitted onto a finger model;

[0030] Figure 5 The reflection coefficient of the electronic device provided in this application varies with the frequency of electromagnetic waves when it is in free space and when it is fitted onto a finger model.

[0031] Figure 6 This describes the ideal situation where the radiation efficiency of the patch antenna varies with the electromagnetic wave frequency when the electronic device provided in this application is in free space and when it is fitted onto a finger model.

[0032] Figure 7 This describes the practical application of the electronic device provided in this application, where the radiation efficiency of the patch antenna varies with the electromagnetic wave frequency in free space and when it is fitted onto a finger model.

[0033] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings are used to distinguish similar parts and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than that illustrated herein. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] The electronic device provided in this application embodiment can be fitted onto a specific part of a user. For example, the user can be a person, and the corresponding specific part can be a finger, wrist, ankle, or other part, such as the head, neck, or waist. For example, the user can also be an animal, and the corresponding specific part can be a limb, head, or other part, such as the abdomen.

[0036] Please see Figure 1a and Figure 1b , Figure 1a This is a schematic diagram of an overall structure of an electronic device provided in an embodiment of this application. Figure 1b This is a schematic diagram illustrating the components of an electronic device provided in an embodiment of this application. The electronic device provided in an embodiment of this application includes:

[0037] Metal ring 1 and sheet antenna 2; wherein,

[0038] The metal ring 1 can be fitted onto a specific part of the object being used, and the first outer surface 101 of the metal ring 1 has a first groove 102 along the thickness direction.

[0039] The patch antenna 2 is disposed around the first groove 102, and there is a gap (referred to as the first gap) 201 between the opposite ends of the patch antenna 2. The patch antenna 2 and the metal ring 1 can be made of the same metal material or different metal materials.

[0040] An insulating material is filled between the patch antenna 2 and the first groove 102 (i.e., the insulating material is filled inside the first groove 102); the patch antenna 2 is maintained at a certain distance from the bottom of the first groove 102 through the insulating material (for ease of description and distinction, this is referred to as the first distance), that is, the patch antenna 2 is parallel to the bottom of the first groove 102, so that the first groove 102 forms a reflector for the patch antenna 2. The presence of the reflector reduces the absorption of electromagnetic energy by the object being used, thus reducing the Specific Absorption Rate (SAR).

[0041] As an example, the first distance between the patch antenna 2 and the bottom of the first groove 102 can be the vertical distance between a cross-section of the patch antenna 2 (denoted as the first cross-section) and a cross-section of the bottom of the first groove 102 (denoted as the second cross-section); wherein the first cross-section is parallel to the second cross-section. The bottom of the first groove 102 has two cross-sections parallel to the first cross-section, and the second cross-section refers to the cross-section that is closer to the first cross-section among the cross-sections parallel to the first cross-section.

[0042] As an example, the first distance between the patch antenna 2 and the bottom of the first groove 102 can be the length of the perpendicular line from any point on the patch antenna 2 to the bottom of the first groove 102.

[0043] The electronic device provided in this application includes a metal ring that can be fitted onto a specific part of a user (such as a finger, wrist, arm, head, ankle, etc.). A first groove is formed on the first outer surface of the metal ring along its thickness direction. The electronic device also includes a sheet antenna surrounding the first groove, with a first gap between the opposite ends of the sheet antenna. An insulating material is filled between the sheet antenna and the first groove, maintaining a first distance between the sheet antenna and the bottom of the first groove through the insulating material. The first groove forms a reflector for the sheet antenna. Based on this application, when the electronic device is fitted onto a specific part of a target object, the electromagnetic energy radiated by the sheet antenna towards that specific part of the user object is reflected by the first groove of the metal ring, thereby reducing the absorption of electromagnetic energy radiated by the sheet antenna by the user object and improving the performance of the sheet antenna.

[0044] In an optional embodiment, the patch antenna 2 covers the opening of the first groove 102, and the patch antenna 2 may or may not protrude from the first outer surface 101 of the metal ring.

[0045] In other words, if the direction from the bottom to the opening of the first groove 102 is set as the positive direction, the distance from the patch antenna 2 to the bottom of the first groove 102 can be equal to the distance from the opening to the bottom of the first groove 102, meaning the patch antenna 2 is flush with the opening of the first groove 102. Alternatively, the distance from the patch antenna 2 to the bottom of the first groove 102 can be greater than the distance from the opening to the bottom of the first groove 102, meaning the patch antenna 2 moves away from the opening of the first groove 102 in the positive direction.

[0046] In an optional embodiment, the metal ring 1 includes an inner surface 103, which is the surface that contacts the specific part of the object when the metal ring 1 is fitted onto it, and a first outer surface 101 of the metal ring 1 is the surface that is disposed opposite to the inner surface 103. That is, the inner surface 103 and the first outer surface 101 of the metal ring 1 are distributed on both sides of the bottom of the first groove 102.

[0047] In an optional embodiment, there is also a gap (referred to as the second gap) 202 between the patch antenna 2 and the two groove walls of the first groove 102, the second gap 202 forming at least part of the net space of the patch antenna.

[0048] In other words, there is a second gap 202 between the patch antenna 2 and each groove wall of the first groove 102. Figure 1aDue to the viewing angle, only the second gap 202 between the patch antenna 2 and one wall of the first groove 102 is shown; the second gap 202 between the patch antenna 2 and the other wall of the first groove 102 is not shown.

[0049] The size of the second gap 202 affects the resonant frequency and bandwidth of the patch antenna 2. Specifically, when the width of the second gap 202 increases, the resonant frequency of the patch antenna 2 shifts to a higher level and the bandwidth increases; conversely, when the width of the second gap 202 decreases, the resonant frequency of the patch antenna 2 shifts to a lower level and the bandwidth narrows.

[0050] In an optional embodiment, the patch antenna 2 is provided with a feed point 203 and a ground point 204; wherein the feed point 203 and the ground point 204 are spaced apart by a quarter or three-quarters of the circumference of the circle on which the patch antenna 2 is located. That is, if the feed point 203 is located at the 12 o'clock position, then the ground point 204 is located at the 3 o'clock position.

[0051] In an optional embodiment, the first gap 201 is located at the midpoint between the feed point 203 and the ground point 204. Alternatively, the first gap 201 is located at the midpoint of the portion of the circumference of the circumference of the patch antenna 2 between the feed point 203 and the ground point 204.

[0052] In an optional embodiment, the first gap 201 is adjustable. That is, the size of the first gap 201 is not a fixed size, but can be set to different sizes according to different application scenarios.

[0053] In an optional embodiment, the size of the first gap 201 is 0.5mm to 1.2mm. That is, the size of the first gap 201 is greater than or equal to 0.5mm and less than or equal to 1.2mm, i.e., the size of the first gap 201 is between 0.5mm and 1.2mm.

[0054] In an optional embodiment, the second gap 202 is adjustable. That is, the size of the second gap 202 is not a fixed size, but can be set to different sizes according to different application scenarios.

[0055] In an optional embodiment, the size of the second gap 202 is 0.5mm to 1.2mm. That is, the size of the second gap 202 is greater than or equal to 0.5mm and less than or equal to 1.2mm, i.e., the size of the second gap 202 is between 0.5mm and 1.2mm.

[0056] In this embodiment of the application, by setting a first gap 201 and a second gap 202, the patch antenna 2 can operate in dual WIFI bands, namely a 2.4GHz WIFI band and a 5GHz WIFI band (i.e., above 5GHz and below 6GHz).

[0057] In an optional embodiment, the electronic device may further include:

[0058] A non-metallic cover plate is disposed on the sheet antenna 2. The non-metallic cover plate may or may not protrude from the first outer surface 101 of the metal ring 1. That is, the non-metallic cover plate is flush with the first outer surface 101 of the metal ring 1, or the non-metallic cover plate is away from the first outer surface 101 of the metal ring 1 in the positive direction.

[0059] By setting a non-metallic cover plate, the patch antenna 2 is encapsulated inside the electronic device, thus preventing the patch antenna 2 from being exposed.

[0060] In an alternative embodiment, such as Figure 2 The diagram shown is an exploded view of an electronic device provided in an embodiment of this application. The electronic device of this application may further include:

[0061] Matching circuit 3 is used to achieve impedance matching of patch antenna 2. One end of matching circuit 3 is connected to feed point 203, and the other end is connected to the functional module of electronic device. In this embodiment, the bottom of the first groove 102 also serves as the reference ground of the functional module.

[0062] The functional module can be an RF transceiver for an electronic device. The functional module of the electronic device is set on a PCB board, which can be embedded in the insulating material in the first groove 102, or it can be set between the non-metallic cover plate and the sheet antenna 2.

[0063] After adding matching circuit 3, the area between feed point 203 and ground point 204, covering three-quarters of the circumference of the patch antenna 2, forms a three-quarters circumference loop antenna. This loop antenna operates in the 2.4GHz Wi-Fi band, functioning in half-wavelength (0.5 times the wavelength) common-mode. In this common-mode state, the electric field direction of the patch antenna 2 is perpendicular to a specific part of the user object, resulting in less absorption of electromagnetic waves by the user object. The area between feed point 203 and ground point 204, covering one-quarter of the circumference of the patch antenna 2, operates in the 5GHz Wi-Fi band, functioning in full-wavelength (1.0 times the wavelength) differential-mode. In differential-mode, the patch antenna 2 exhibits high radiation efficiency and good bandwidth.

[0064] As mentioned earlier, the first gap 201 is adjustable. By changing the size of the first gap 201, the bandwidth and resonant characteristics of the 5GHz WIFI band can be changed.

[0065] In an optional embodiment, the electronic device of this application may further include:

[0066] The aperture tuning circuit 4 is used to adjust the electrical length (referred to as the first electrical length for ease of description and distinction) of the portion of the patch antenna 2 located between the feed point 203 and the ground point 204, including the first gap 201. The first electrical length is equal to the physical length of the portion of the patch antenna 2 located between the feed point 203 and the ground point 204, including the first gap 201, divided by the wavelength of the electromagnetic wave transmitted in the portion of the patch antenna 2 located between the feed point 203 and the ground point 204, including the first gap 201.

[0067] One end of the aperture tuning circuit 4 is connected to the grounding point 204, and the other end is connected to the bottom of the first groove 102.

[0068] As an example, aperture tuning circuit 4 may include a capacitor.

[0069] As an example, aperture tuning circuit 4 may include an inductor.

[0070] Optionally, if the first electrical length is greater than the target electrical length, the aperture tuning circuit 4 can select a capacitor; if the first electrical length is less than the target electrical length, the aperture tuning circuit 4 can select an inductor, so that the first electrical length reaches the target electrical length.

[0071] By adjusting the electrical length of the portion of the patch antenna 2 that includes the first gap 201 between the feed point 203 and the ground point 204, the patch antenna can be in a differential mode state across the entire wavelength when operating at 5 GHz.

[0072] like Figure 3 The diagram shown is an example of a matching circuit 3 and an aperture tuning circuit 4 provided in an embodiment of this application. In this example, the matching circuit 3 is composed of capacitors C1 and C2 and inductors L1 and L2, and the aperture tuning circuit 4 is composed of capacitor C3. Figure 3 Port1 is the port where the functional module of the electronic device is connected to the matching circuit 3. One end of capacitor C3 is connected to ground point 204, and the other end is connected to the bottom of the first groove 102.

[0073] Optionally, a second groove may be provided on the second outer surface of the metal ring 1 along the thickness direction, wherein the second outer surface is the outer surface of the metal ring 1 perpendicular to the first outer surface 101, and the opening direction of the second groove is perpendicular to the opening direction of the first groove 102.

[0074] Microelectronic components can be placed in the second groove.

[0075] or,

[0076] The second recess can hold a PCB board. For example, in the case of an electronic device with two PCB boards, the first recess 102 holds one PCB board and the second recess holds the other PCB board.

[0077] or,

[0078] The second groove can hold a structural component that can adjust the size of the first gap 201. This structural component is connected to the opposite ends of the sheet antenna 2 and provides an operable part to the user, allowing the user to adjust the size of the first gap 201 in real time by operating the part (e.g., by tossing the part).

[0079] To better illustrate the antenna performance of the electronic device provided in this application embodiment, tests were conducted on the electronic device in free space (FS) and when it was fitted with a finger model, and the test results were compared. In this example, the dielectric constant of the finger model is epsr = 25.7, and the loss tangent tanDelta = 0.3772. For a material, the larger the dielectric constant and loss tangent, the stronger the material's ability to absorb electromagnetic waves, and the greater the loss. The dielectric constant epsr of a normal PCB board is between 3 and 4, and the loss tangent tanDelta is between 0.0001 and 0.0002. Obviously, the finger model has a very strong ability to absorb electromagnetic waves.

[0080] like Figure 4a The diagram shows the current distribution of the patch antenna 2 when it operates at 2.4 GHz when the electronic device provided in this application is fitted onto a finger model. It can be seen that when the patch antenna 2 operates at 2.4 GHz, the current is mainly distributed at the aforementioned three-quarters of the circumference of the loop antenna, with a maximum of 54.4 dB (A / m).

[0081] like Figure 4b The diagram shown is a current distribution diagram of the patch antenna 2 operating at 5.5 GHz when the electronic device provided in this application is fitted onto a finger model. It can be seen that when the patch antenna 2 operates at 5.5 GHz, the current is mainly distributed in the aforementioned quarter-circle antenna (i.e., the part of the antenna with the first gap 201), with a maximum of 49.5 dB (A / m).

[0082] like Figure 5 The figure shows how the reflection coefficient (S11) of the electronic device provided in this application changes with the frequency of electromagnetic waves in free space and when it is placed on a finger model. Figure 5 middle," "This indicates the test results showing how the reflection coefficient of an electronic device changes with the frequency of electromagnetic waves in free space." This indicates the test results showing how the reflection coefficient of an electronic device changes with the frequency of electromagnetic waves when it is placed on a finger model. Figure 5 It can be seen that the reflection coefficients of the electronic device in this application in the 2.4GHz and 5GHz WIFI bands when it is covered by the finger model are similar to the reflection coefficients of the electronic device in the 2.4GHz and 5.4GHz WIFI bands when it is in free space. Moreover, the reflection coefficients of the electronic device at the working frequency (2.4GHz and 5.4GHz) when it is covered by the finger model are better than the reflection coefficients of the electronic device at the working frequency when it is in free space.

[0083] like Figure 6 and Figure 7 As shown, Figure 6 The radiation efficiency of the patch antenna 2 provided in this application embodiment varies with the electromagnetic wave frequency in an ideal state (circuit loss is not considered) when the electronic device is in free space and when it is fitted onto a finger model. "This represents the test results showing how the radiation efficiency of the patch antenna 2 of the electronic device changes with the frequency of the electromagnetic wave in free space." "This indicates the test results showing how the radiation efficiency of the patch antenna 2 changes with the frequency of electromagnetic waves when the electronic device is mounted on the finger model." Figure 7 This application demonstrates the practical application of how the radiation efficiency of the patch antenna 2 varies with electromagnetic wave frequency when the electronic device provided in this embodiment is in free space and when it is fitted onto a finger model (considering circuit losses). "This represents the test results showing how the radiation efficiency of the patch antenna 2 of the electronic device changes with the frequency of the electromagnetic wave in free space." "This indicates the test results showing how the radiation efficiency of the patch antenna 2 changes with the frequency of electromagnetic waves when the electronic device is mounted on the finger model."

[0084] Depend on Figure 6 and Figure 7 It can be seen that, in the 2.4GHz and 5GHz operating frequency bands, comparing the free space and finger-shaped models, the radiation efficiency changes similarly with the electromagnetic wave frequency, regardless of whether it is an ideal situation or a practical application. In the ideal situation, when the electronic device is placed on the finger-shaped model, the radiation efficiency of the patch antenna 2 decreases by 1.5dB at 2.4GHz compared to the free space state, and the maximum decrease is 2dB in the 5GHz range (i.e., above 5GHz and below 6GHz). In practical applications, the radiation efficiency of the patch antenna 2 decreases by less than 1dB. Compared to the free space state, the overall decrease is lower when the electronic device is placed on the finger-shaped model, which is within an acceptable range.

[0085] In the several embodiments provided in this application, it should be understood that the disclosed system can be implemented in other ways. Furthermore, the mutual couplings or direct couplings or communication connections shown or discussed can be indirect couplings or communication connections through some interfaces, devices, or units, and can be electrical, mechanical, or other forms.

[0086] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0087] It should be understood that in the embodiments of this application, the claims, various embodiments, and features can be combined with each other to solve the aforementioned technical problems.

[0088] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electronic device, comprising: A metal ring that can be fitted onto a specific part of an object, wherein a first groove is provided on the first outer surface of the metal ring along the thickness direction, and the specific part is the body part of the object being used; A patch antenna is disposed around the first groove, and a first gap exists between the opposite ends of the patch antenna. The first gap can adjust the resonant characteristics of the patch antenna. A second gap exists between the patch antenna and the two groove walls of the first groove, and the second gap forms at least a partial clearance area of ​​the patch antenna. The size of the second gap affects the resonant frequency and bandwidth of the patch antenna. A feed point and a ground point are provided on the patch antenna. The first gap is located between the feed point and the ground point. Through the synergistic effect of the first gap and the second gap, the patch antenna can operate in dual WIFI bands of 2.4 GHz and 5 GHz. The patch antenna and the first groove are filled with insulating material. The patch antenna is maintained at a first distance from the bottom of the first groove by the insulating material. The first groove forms a reflector for the patch antenna, so that the electromagnetic energy radiated by the patch antenna toward a specific part of the user is reflected by the first groove of the metal ring, thereby reducing the absorption of electromagnetic energy by the user and reducing the electromagnetic wave absorption ratio.

2. The electronic device according to claim 1, wherein the sheet antenna covers the opening of the first groove, and the sheet antenna may or may not protrude from the first outer surface; and / or, The metal ring includes an inner surface, which is the surface that contacts the specific part when the metal ring is fitted onto the specific part, and the first outer surface is the surface that is disposed opposite to the inner surface.

3. The electronic device according to claim 1, wherein the distance between the feed point and the ground point is one-quarter or three-quarters of the circumference of the circumference of the patch antenna.

4. The electronic device according to claim 3, wherein the first gap is located at the midpoint between the power supply point and the grounding point.

5. The electronic device according to claim 1, wherein, The dimensions of the first gap and / or the second gap are 0.5mm to 1.2mm.

6. The electronic device according to claim 1, further comprising: A non-metallic cover plate is disposed on the sheet antenna, the non-metallic cover plate protruding or not protruding from the first outer surface.

7. The electronic device according to claim 3 or 4, further comprising: An aperture tuning circuit is used to adjust the electrical length of the portion of the patch antenna containing the first gap located between the feed point and the ground point.

8. The electronic device according to claim 7, wherein the aperture tuning circuit comprises a capacitor or an inductor.

9. The electronic device according to claim 3 or 4, further comprising: A matching circuit is used to achieve impedance matching of the patch antenna. One end of the matching circuit is connected to the feed point, and the other end is connected to the functional module of the electronic device.

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