Electronic device

Abstract

The present disclosure relates to an electronic device. The electronic device comprises: a conductive middle frame; a back shell covering the conductive middle frame and connected with the conductive middle frame; an antenna module comprising a first radiator and a second radiator; the first radiator is formed on the conductive middle frame; the second radiator is formed on the back shell; wherein the working frequency of the first radiator is the same as the working frequency of the second radiator, and the projection position of the first radiator to the back shell is different from the position of the second radiator on the back shell. Through the embodiment of the present disclosure, the isolation between the first radiator and the second radiator can be improved, and the radiation efficiency of the antenna module in the electronic device can be improved.

Description

Technical Field

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

[0002] With the development of technology, electronic devices such as watches are moving towards intelligence, miniaturization, and thinness; and more and more antenna frequency bands are being incorporated into watches to achieve more comprehensive and superior wireless communication and positioning functions.

[0003] However, when multiple antennas with the same or similar center frequencies are set on a watch, there may be significant signal interference between the antennas, which reduces the isolation between the antennas, affects the sensitivity of individual antennas, and leads to a decrease in the overall radiation efficiency of the watch. Utility Model Content

[0004] To overcome the problems existing in the related technologies, this disclosure provides an electronic device that can improve the isolation between the first radiator and the second radiator and improve the radiation efficiency of the antenna module in the electronic device.

[0005] According to a first aspect of the present disclosure, an electronic device is provided, comprising at least:

[0006] Conductive middle frame;

[0007] A back cover covers the conductive frame and is connected to the conductive frame.

[0008] The antenna module includes a first radiator and a second radiator;

[0009] The first radiator is formed on the conductive frame;

[0010] The second radiator is formed on the back shell;

[0011] The first radiator operates at the same frequency as the second radiator, and the projection position of the first radiator onto the back shell is different from the position of the second radiator on the back shell.

[0012] In some possible implementations, the electronic device further includes:

[0013] The circuit board is installed within the conductive frame;

[0014] A reflector is disposed on the circuit board and positioned opposite to the second radiator to reflect the wireless signals transmitted and received by the second radiator.

[0015] In some possible implementations, the reflector comprises a rectangular reflector; or,

[0016] The reflector includes a sawtooth reflector; the length of the sawtooth side of the sawtooth reflector is the same as the electrical length of the second radiator.

[0017] In some possible implementations, the projection position of the first radiator onto the back shell and the position of the second radiator on the back shell are located at opposite ends of the same side of the back shell.

[0018] In some possible implementations, the first radiator and the second radiator transmit and receive wireless signals of the same type.

[0019] In some possible implementations, the electronic device further includes:

[0020] The radio frequency module includes a first radio frequency module and a second radio frequency module that transmit and receive the same type of radio frequency signals.

[0021] The first radiator is connected to the first radio frequency module, and the second radiator is connected to the second radio frequency module.

[0022] In some possible implementations, the antenna module further includes:

[0023] The third radiator is formed at a different position on the conductive frame than the first radiator.

[0024] The fourth radiator is formed at a different position on the conductive frame than the third radiator;

[0025] The operating frequencies of the first radiator, the third radiator, and the fourth radiator are all different.

[0026] In some possible implementations, the first radiator and the fourth radiator are located at the same position on the conductive frame and are disposed on the same antenna.

[0027] In some possible implementations, the back cover includes an insulating housing.

[0028] In some possible implementations, the electronic device includes a wearable device.

[0029] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0030] An electronic device provided in this disclosure includes: a conductive frame; a back cover covering the conductive frame and connected to the conductive frame; and an antenna module including a first radiator and a second radiator. The first radiator is formed on the conductive frame, and the second radiator is formed on the back cover. The first radiator operates at the same frequency as the second radiator, and the projection position of the first radiator onto the back cover is different from the position of the second radiator on the back cover.

[0031] In this way, unlike related technologies where both radiators are placed on the conductive frame of the electronic device, the first radiator in this embodiment is formed on the conductive frame and the second radiator is formed on the back cover. The projection position of the first radiator onto the back cover is different from the position of the second radiator on the back cover, so that the operating current directions of the first and second radiators with the same operating frequency are intersecting. That is, the radiation modes of the first and second radiators do not overlap, thereby reducing the mutual interference between the first and second radiators, improving the isolation between the first and second radiators, and improving the radiation efficiency of the antenna module in the electronic device.

[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0034] Figure 1 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment. Figure 1 .

[0035] Figure 2 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment. Figure 2 .

[0036] Figure 3 This is a schematic diagram illustrating the structure of a conventional watch according to an exemplary embodiment.

[0037] Figure 4 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment. Figure 3 .

[0038] Figure 5 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment. Figure 4 .

[0039] Figures 6a-6cThis is a schematic diagram illustrating the 2.45 GHz current distribution on a circuit board in an electronic device according to an exemplary embodiment.

[0040] Figure 7a This is a schematic diagram illustrating the antenna performance of a Bluetooth intercom antenna in a conventional watch according to an exemplary embodiment.

[0041] Figure 7b This is a schematic diagram illustrating the antenna performance of a first radiator and a second radiator in an electronic device, where a second radiator is formed on a back cover, according to an exemplary embodiment.

[0042] Figure 7c This is a schematic diagram illustrating the antenna performance of a first radiator and a second radiator in an electronic device, according to an exemplary embodiment, where a second radiator is formed on a back cover and a rectangular reflector is provided on a circuit board.

[0043] Figure 7d This is a schematic diagram illustrating the antenna performance of the first radiator and the second radiator in an electronic device, according to an exemplary embodiment, where the second radiator is formed on the back cover and a sawtooth reflector is provided on the circuit board.

[0044] Figure 8 This is a structural block diagram of an electronic device according to an exemplary embodiment.

[0045] Figures 1 to 5 The attached figure labels are:

[0046] 10-Electronic device, 11-Conductive frame, 12-Back shell, 13-Antenna module, 131-First radiator, 132-Second radiator, 101-Display module, 102-Battery module, 14-Circuit board, 15-Reflector, 151-Rectangular reflector, 152-Sawtooth reflector, 133-Third radiator, 134-Fourth radiator. Detailed Implementation

[0047] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of structures consistent with some aspects of this disclosure as detailed in the appended claims.

[0048] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0049] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0050] The technical solutions provided by the various embodiments of this disclosure are described in detail below with reference to the accompanying drawings.

[0051] In related technologies, an increasing number of antenna frequency bands are being incorporated into electronic devices such as watches to achieve more comprehensive and superior wireless communication and positioning functions. However, when multiple antennas with the same or similar center frequencies are placed on a watch, significant signal interference may exist between the antennas, reducing the isolation between them, affecting the sensitivity of individual antennas, and resulting in a decrease in the overall radiation efficiency of the watch.

[0052] Based on this, embodiments of the present disclosure provide an electronic device. Figure 1 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment. Figure 1 , Figure 2 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment. Figure 2 ,like Figure 1 and Figure 2 As shown, the electronic device 10 may include:

[0053] Conductive middle frame 11;

[0054] The back cover 12 covers the conductive frame 11 and is connected to the conductive frame 11;

[0055] Antenna module 13 includes a first radiator 131 and a second radiator 132;

[0056] A first radiator 131 is formed on the conductive frame 11;

[0057] The second radiator 132 is formed on the back shell 12;

[0058] The first radiator 131 operates at the same frequency as the second radiator 132, and the projection position of the first radiator 131 onto the back shell 12 is different from the position of the second radiator 132 on the back shell 12.

[0059] In this embodiment of the disclosure, the aforementioned electronic device can be a device used to transmit and receive wireless signals through a radiator to support wireless communication, wireless positioning, and other wireless functions. The electronic device may include, but is not limited to, mobile phones, laptops, in-vehicle devices, tablet computers, personal digital assistants (PDAs), mobile internet devices (MIDs), wearable devices, etc., and this disclosure does not impose any limitations on this.

[0060] In some embodiments, the electronic device includes a wearable device.

[0061] Here, wearable devices can be watches, bracelets, glasses, or headphones, etc., and this disclosure does not limit them.

[0062] It is understandable that due to the small size of wearable devices, antennas operating at the same (or similar) frequency bands on the mid-frame will experience strong interference; this interference is particularly pronounced on mid-frames without gaps. Therefore, embodiments of this disclosure can embed or patch the first radiator onto the conductive mid-frame, and embed or patch the second radiator onto the back cover. This utilizes the insulating properties of the back cover itself to isolate some crosstalk between signals, and leverages the intersecting characteristics of the operating currents to further enhance the isolation between antennas operating at the same frequency. This allows for better antenna performance even in miniaturized wearable devices.

[0063] In some embodiments, wearable devices include watches or wristbands.

[0064] For example, taking a wearable device such as a watch as an example, Figure 2 As shown, the watch may include: a display module 101, a conductive frame 11, a battery module 102, a circuit board 14, and a back cover 12.

[0065] The display module provides display and touch functions; the display module may include, but is not limited to, a glass cover, a touch panel, a display panel, and optical adhesive. The conductive frame may be a metal frame, and some of its conductive segments may be reused or formed into a Global Navigation Satellite System (GNSS) antenna, a cellular antenna, or a Bluetooth (BT) antenna.

[0066] The aforementioned battery module can be used to power a series of functional modules such as the display module and antenna module for normal operation; the aforementioned circuit board can be the mainboard of the watch, providing a carrier for the internal functional circuits, chips, motors and other components of the watch; the aforementioned back cover can provide structural support for the watch's speaker module, heart rate detection module and other functional modules.

[0067] In this embodiment of the disclosure, the conductive frame can be a frame with conductive properties in an electronic device, which can be used to support, fix and protect the functional devices inside the electronic device; wherein, the first radiator, GNSS antenna or cellular antenna, etc., can be formed on the conductive frame.

[0068] The aforementioned back cover can be a component in an electronic device that supports the formation of the second radiator in an antenna module. The back cover may be entirely non-conductive, i.e., an insulating shell; or, the portion of the back cover in which the second radiator is formed may be non-conductive, while other portions may be conductive. Therefore, the electrical signals on the second radiator can be partially isolated by the back cover, thereby improving the signal crosstalk problem.

[0069] In some embodiments, the back cover includes an insulating housing. Here, the insulating housing may include, but is not limited to, a plastic housing, a ceramic housing, or a fiberglass housing, to enhance the diversity of electronic device designs.

[0070] Among these advantages, plastic materials are low-cost, and using plastic materials to make back covers can reduce the manufacturing cost of electronic devices. Furthermore, plastic shells can be formed by injection molding, a simple and easy-to-implement method. In addition, plastic materials have better corrosion resistance, which can resist some moisture erosion and extend the service life of the back cover.

[0071] It should be noted that the specific shape of the insulating shell can be set according to the actual application scenario, as long as it supports the formation of the second radiator. This disclosure does not impose any restrictions.

[0072] For example, the insulating shell can be rectangular, and the projection position of the first radiator onto the back shell and the second radiator can both be located on the long side of the rectangle; the insulating shell can also be circular, and the projection position of the first radiator onto the back shell and the second radiator can both be located in the same semi-circular area; the insulating shell can also be a circular rectangle, and the projection position of the first radiator onto the back shell and the second radiator can both be located on the same side of the circular rectangle, etc.

[0073] In this embodiment of the disclosure, the first radiator and the second radiator can be radiators with the same frequency, that is, the operating frequency of the first radiator is the same as the operating frequency of the second radiator.

[0074] For example, the first radiator and the second radiator can be radiators with the same center frequency; for example, the first radiator is a BT antenna that transmits and receives 2.4 GHz wireless signals, and the second radiator is a Wireless Fidelity (WiFi) antenna that transmits and receives 2.4 GHz wireless signals.

[0075] In other embodiments, the operating frequency bands of the first radiator and the second radiator partially overlap but are not exactly the same, i.e., their center frequencies are similar.

[0076] For example, the first radiator and the second radiator can be radiators with similar center frequencies; for example, the first radiator is a cellular antenna that transmits and receives wireless signals in the N77 (3.3 GHz to 4.2 GHz) band, and the second radiator is a cellular antenna that transmits and receives wireless signals in the N78 (3.3 GHz to 3.8 GHz) band.

[0077] In some embodiments, the first radiator and the second radiator transmit and receive wireless signals of the same type.

[0078] In this way, by placing the first radiator with the same type of wireless signal transmission and reception in the conductive frame and the second radiator in the back shell, the isolation between the first and second radiators can be improved while ensuring the miniaturization of the electronic device, thereby enhancing the radiation efficiency of the antenna module in the electronic device.

[0079] For example, both the first radiator and the second radiator can be cellular antennas that transmit and receive low-frequency wireless signals; or, the first radiator can be a conventional BT antenna for Bluetooth pairing and data transmission, and the second radiator can be a walkie-talkie BT antenna for making calls without internet access.

[0080] It should be noted that traditional BT antennas may include, but are not limited to: dipole antennas, ceramic antennas, printed circuit board (PCB) antennas, etc.; walkie BT antennas may include, but are not limited to: patch antennas, planar inverted-F antennas (PIFA) antennas, etc.

[0081] In some embodiments, the wireless signals transmitted and received by the first radiator and the second radiator are both Bluetooth signals.

[0082] In this way, the Bluetooth communication performance of the antenna module in the electronic device can be improved by setting both the first radiator and the second radiator to transmit and receive Bluetooth signals.

[0083] The first and second radiators can both be traditional BT antennas, responsible for Bluetooth pairing and data transmission with external terminal devices.

[0084] It should be noted that, taking watches as an example of electronic devices, with the development of technology, higher requirements have been placed on watches, such as setting up cellular antennas in watches so that watches can independently access the Internet or make calls; however, even watches with cellular communication cannot complete communication in environments without Internet access.

[0085] In this embodiment of the disclosure, the first radiator can be a conventional BT antenna, and the second radiator can be a walkie-talkie BT antenna; wherein the walkie-talkie BT antenna and the conventional BT antenna share the same frequency band.

[0086] Understandably, the traditional Bluetooth antenna (BT antenna) is responsible for receiving and transmitting 2.4GHz Bluetooth signals to enable pairing and connection between the watch and the phone, thereby synchronizing data such as notification pushes, music playback control, and sports data uploads. The walkie-talkie Bluetooth antenna (BT antenna) is responsible for receiving and transmitting 2.4GHz Bluetooth signals and processing and transmitting voice signals, allowing users to conduct real-time voice conversations with other watch users. For example, in scenarios such as outdoor sports or team collaboration, users can use the walkie-talkie Bluetooth antenna for convenient and quick voice communication.

[0087] In related technologies, since miniaturization and thinness have become the current development trend of electronic devices, many radiators are integrated on the conductive frame. That is, there are cases where different radiators that transmit and receive the same or similar wireless frequency bands are set on the same conductive frame.

[0088] Taking watches as an example of electronic devices, see [link / reference]. Figure 3 , Figure 3This is a schematic diagram of the structure of a conventional watch according to an exemplary embodiment; all antenna radiators are integrated into the watch's frame (such as on a metal decorative piece). The first antenna T1 is located at the upper right corner of the frame, and the second antenna T2 is located at the lower left corner. Since the first antenna T1 and the second antenna T2 operate at the same frequency and share the same conductive frame, there are significant drawbacks of low isolation and low efficiency.

[0089] In view of this, in the embodiments of this disclosure, the first radiator and the second radiator with the same operating frequency are no longer both disposed on the conductive middle frame. Instead, the second radiator is moved from the conductive middle frame to the back shell, and the projection position of the first radiator onto the back shell is different from the position of the second radiator on the back shell.

[0090] It should be noted that when the first radiator is working, the working current is either towards or away from the first radiator, and the current is most concentrated near the first radiator. The same applies to the second radiator.

[0091] An electronic device is disclosed in this embodiment, comprising: a conductive frame; a back shell covering the conductive frame and connected to the conductive frame; and an antenna module including a first radiator and a second radiator; the first radiator being formed on the conductive frame; and the second radiator being formed on the back shell; wherein the operating frequency of the first radiator is the same as the operating frequency of the second radiator, and the projection position of the first radiator onto the back shell is different from the position of the second radiator on the back shell.

[0092] In this way, unlike related technologies where both radiators are placed on the conductive frame of the electronic device, the first radiator in this embodiment is formed on the conductive frame and the second radiator is formed on the back cover. The projection position of the first radiator onto the back cover is different from the position of the second radiator on the back cover, so that the operating current directions of the first and second radiators with the same operating frequency are intersecting. That is, the radiation modes of the first and second radiators do not overlap, thereby reducing the mutual interference between the first and second radiators, improving the isolation between the first and second radiators, and improving the radiation efficiency of the antenna module in the electronic device.

[0093] Figure 4 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment. Figure 3 , Figure 5 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment. Figure 4 ,like Figure 4 and Figure 5 As shown, the electronic device provided in the embodiments of this disclosure, in Figure 1The electronic device shown can be further enhanced with other components, such as circuit boards and reflectors.

[0094] like Figure 4 and Figure 5 As shown, the aforementioned electronic device 10 also includes:

[0095] Circuit board 14 is installed inside conductive frame 11;

[0096] The reflector 15 is disposed on the circuit board 14 and is positioned opposite to the second radiator 132, and is used to reflect the wireless signals transmitted and received by the second radiator 132.

[0097] In this way, by setting a reflector on the circuit board installed in the conductive frame and positioning the reflector opposite to the second radiator on the back cover, the wireless signals transmitted and received by the second radiator can be reflected, thereby enhancing the strength of the wireless signals transmitted and received by the second radiator, thus improving the efficiency of the second radiator in transmitting and receiving wireless signals and improving the radiation efficiency of the antenna module in the electronic device.

[0098] Here, the aforementioned circuit board can be a PCB in an electronic device, made of double-sided fiberglass board; the functional circuits on this circuit board support various functions of the electronic device, such as communication, audio playback, photography, and screen display. The circuit board is mounted on a conductive frame and connected to various functional modules within the electronic device.

[0099] For example, the circuit board mentioned above includes a motherboard, and each radio frequency module in the electronic device can be mounted on the motherboard and connected to its corresponding radiator via a radio frequency transmission line.

[0100] Of course, the motherboard also contains a central processing unit (CPU), power management chip, display module driver chip, memory chip, etc., which are not limited in this disclosure.

[0101] It should be noted that the conductive frame may have an assembly groove, in which the circuit board may be installed; the side of the circuit board may have an installation notch, which is positioned opposite to the second radiator, and the reflector may be embedded in the installation notch.

[0102] In this embodiment of the disclosure, the reflector may be a device for directional or diffuse reflection of incident electromagnetic waves, which can enhance the strength of wireless signals transmitted and received by the second radiator in the electronic device; for example, the reflector may include, but is not limited to, a rectangular reflector or a sawtooth reflector.

[0103] In some embodiments, such as Figure 4 As shown, reflector 15 includes a rectangular reflector 151; or,

[0104] like Figure 5 As shown, the reflector 15 includes a sawtooth reflector 152; the length of the sawtooth side of the sawtooth reflector 152 is the same as the electrical length of the second radiator 132.

[0105] Thus, by setting a rectangular reflector on the circuit board, the wireless signals transmitted and received by the second radiator can be directed and converged, preventing the absorption of wireless signals by obstacles such as arms, thereby improving the efficiency of the second radiator in transmitting and receiving wireless signals. Alternatively, by setting a sawtooth reflector on the circuit board, and setting the length of the sawtooth side of the sawtooth reflector to be the same as the electrical length of the second radiator, the wireless signals transmitted and received by the second radiator can be reflected and scattered multiple times on the sawtooth surface, thereby suppressing the high-order harmonic components in the wireless signal and reducing the interference of high-order harmonics on the fundamental signal, thereby improving the efficiency and signal quality of the second radiator in transmitting and receiving wireless signals.

[0106] Here, the rectangular reflector can have a rectangular structure that is either planar or parabolic, and the surface of the rectangular reflector is relatively flat and smooth; it can be based on the principle of specular reflection, that is, when the wave of the wireless signal transmitted and received by the second radiator is incident on the surface of the rectangular reflector, it will be reflected according to the law that the angle of incidence equals the angle of reflection.

[0107] It is understood that, by reasonably designing the size, angle and placement of the rectangular reflector, the incident wave can be directionally reflected to a specific direction, thereby realizing functions such as convergence, transmission or redirection of wireless signals transmitted and received by the second radiator.

[0108] It should be noted that when the sawtooth reflector reflects the wireless signal transmitted and received by the second radiator, the length of the sawtooth side of the sawtooth reflector is the same as the electrical length of the second radiator, that is, the two radiators with the same electrical length transmit and receive the wireless signal together.

[0109] Here, the reflective surface of the sawtooth reflector can be composed of multiple "small planes" with different tilt angles, forming a sawtooth-like shape.

[0110] Understandably, when the wireless signal transmitted and received by the second radiator is incident on the surface of the sawtooth reflector, it will undergo multiple reflections and scatterings on the various sawtooth-shaped facets, thus dispersing the direction of the reflected wireless signal. Unlike the directional focusing of a rectangular reflector, the sawtooth reflector can reflect the incident wireless signal in multiple directions, preventing the wireless signal from reflecting back along its original direction, thereby reducing echo interference and improving antenna radiation efficiency.

[0111] In some embodiments, such as Figure 1As shown, the projection position of the first radiator 131 onto the back shell 12 and the position of the second radiator 132 on the back shell 12 are located at opposite ends of the same side of the back shell 12.

[0112] Here, the projection position of the first radiator onto the back shell and the position of the second radiator on the back shell are located at opposite ends of the same side of the back shell. It can be understood that the distance between the projection position of the first radiator onto the back shell and the second radiator is approximately the length of the side of the back shell on which the second radiator is located.

[0113] In this way, by setting the projection position of the first radiator onto the back shell and the position of the second radiator on the back shell at opposite ends of the same side of the back shell, the isolation between the first radiator and the second radiator can be further increased, thereby ensuring the antenna performance of the first radiator and the second radiator respectively.

[0114] In some embodiments, the above-mentioned electronic device further includes:

[0115] The radio frequency module includes a first radio frequency module and a second radio frequency module that transmit and receive the same type of radio frequency signals.

[0116] The first radiator is connected to the first radio frequency module, and the second radiator is connected to the second radio frequency module.

[0117] In this way, by setting up a radio frequency module in the electronic device, and having a first radio frequency module and a second radio frequency module that transmit and receive the same type of radio frequency signals, and connecting the first radiator to the first radio frequency module and the second radiator to the second radio frequency module, it is possible to set up separate radio frequency modules for the first radiator and the second radiator, thereby maximizing the transmission efficiency of wireless signals through the performance of the radio frequency modules and improving the wireless performance of the first radiator and the second radiator.

[0118] Here, the radio frequency (RF) module is a key component in wireless signal transmission and reception, responsible for processing the transmission and reception of RF electrical signals. The RF module includes components such as a power amplifier, low-noise amplifier, filter, and mixer. The antenna (such as a first radiator or a second radiator) serves as the output and input port of the RF module, responsible for converting RF signals into electromagnetic waves (wireless signals) for transmission, or receiving electromagnetic waves (wireless signals) and converting them back into RF signals.

[0119] It should be noted that both the first radio frequency module and the second radio frequency module are disposed on the circuit board, and the first radio frequency module and the second radio frequency module are disposed at intervals on the circuit board; the first radio frequency module is electrically connected to the first radiator formed on the conductive frame, and the second radio frequency module is electrically connected to the second radiator formed on the back shell.

[0120] It is understood that the relationship between the radio frequency (RF) module and the antenna is close, and the performance of the RF module directly affects the antenna's radiation efficiency and receiving sensitivity; good matching can maximize signal transmission efficiency and reduce energy loss. Therefore, by providing separate RF modules for the first and second radiators, this embodiment of the disclosure can maximize the transmission efficiency of wireless signals and effectively improve the wireless performance of both the first and second radiators.

[0121] It should be noted that when the first radiator is a traditional Bluetooth antenna and the second radiator is a walkie-talkie Bluetooth antenna, the Bluetooth signals transmitted and received by the two antennas ultimately function differently. If they share the same radio frequency module, it will cause resource contention within the radio frequency module, affecting the response time of each function. Therefore, in this embodiment, the first and second radio frequency modules can be used as different Bluetooth modules and set up separately on the circuit board to reduce resource contention and improve the completion and efficiency of Bluetooth pairing and data transmission functions, as well as Bluetooth walkie-talkie functions.

[0122] In other embodiments, in order to achieve a more compact design of electronic devices and reduce wiring difficulty, the first radiator and the second radiator may be connected to the same radio frequency module, and the embodiments of the present disclosure do not limit this.

[0123] In some embodiments, such as Figure 1 As shown, the antenna module 13 also includes:

[0124] The third radiator 133 is formed at a different position on the conductive frame 11 than the first radiator 131.

[0125] The fourth radiator 134 is formed at a different position on the conductive frame 11 than the third radiator 133;

[0126] The operating frequencies of the first radiator 131, the third radiator 133, and the fourth radiator 134 are all different.

[0127] In this way, a third radiator with a different operating frequency can be set at a different position on the conductive frame of the electronic device than the first radiator, and a fourth radiator with a different operating frequency can be set at a different position on the conductive frame than the third radiator. This allows for more rational use of the space inside the electronic device while ensuring the isolation between the radiators, thus better achieving miniaturization and thinning of the electronic device.

[0128] Here, taking the first radiator as a traditional BT antenna, the second radiator as a walkie-talkie BT antenna as an example, the third radiator can be a cellular antenna; for example, the operating frequency of the third radiator can be N77 (3.3GHz to 4.2GHz) or N78 (3.3GHz to 3.8GHz), etc.

[0129] At this time, the fourth radiator can be a GNSS antenna, and the operating frequency of the fourth radiator can be located in some sub-bands of the low-frequency band; for example, the operating frequency of the fourth radiator can be located in the L1 band (1.56GHz to 1.61GHz) or the L5 band (1.16GHz to 1.210GHz), etc.

[0130] It should be noted that the first radiator and the third radiator are positioned differently on the conductive frame of the electronic device, and the third radiator and the fourth radiator are positioned differently. In this case, the positions of the first radiator and the fourth radiator on the conductive frame can be the same or different, as long as the first radiator and the third radiator are separated by two return points GND. This embodiment of the present disclosure does not impose any restrictions.

[0131] In some embodiments, such as Figure 1 As shown, the first radiator 131 and the fourth radiator 134 are located at the same position on the conductive frame 11 and are disposed on the same antenna.

[0132] In this way, the first radiator and the fourth radiator can be integrated in the same position on the conductive frame. While ensuring that the isolation between each radiator meets the requirements, the antenna integration of the antenna module in the electronic device can be further improved, saving structural layout space and realizing miniaturized design.

[0133] In this embodiment, since the first radiator and the fourth radiator operate at different frequencies, the interference between the first radiator and the fourth radiator is small, that is, the required isolation between the first radiator and the fourth radiator is low, and the first radiator and the fourth radiator can be set at the same position on the conductive frame.

[0134] Smartwatches based on current technology only have a traditional BitTorrent antenna for data synchronization with mobile phones. As technology advances, people have higher demands for watches, requiring them to support more frequency bands. Therefore, watches with GNSS positioning capabilities began to appear. With further technological advancements, users were no longer satisfied with watches only supporting BitTorrent and GNSS functions. Thus, LTE cellular communication frequency bands (LTE 700 / 2300 / 2500MHz, i.e., LTE low-frequency / mid-frequency / high-frequency bands) were added to watches. Therefore, even without a mobile phone, the watch can independently access the internet or make calls. However, even watches with cellular communication capabilities cannot communicate in environments without a network connection.

[0135] Therefore, in this embodiment of the disclosure, an additional BT antenna is added to the watch specifically for making calls without internet access. Combined with... Figure 3As shown, in traditional watches, both the walkie-talkie BT antenna and the conventional BT antenna can be placed on the mid-frame. For example, the walkie-talkie BT antenna and the cellular antenna are integrated on the first antenna T1, and the conventional BT antenna and the GNSS antenna are integrated on the second antenna T2. The first antenna T1 and the second antenna T2 are isolated by two return points (GND). However, in this design, because the two BT antennas share the same Bluetooth communication frequency band and are located on the same conductive mid-frame, the current distribution on the motherboard is weak, and the isolation between them remains low, resulting in reduced antenna efficiency for each BT antenna.

[0136] Based on this, see Figure 1 In this embodiment, the first radiator 131 (as a conventional BT antenna) is still mounted on the conductive frame 11, while the second radiator 132 (as a walkie-talkie BT antenna) is moved to the back cover 12 of the watch. At this time, as... Figure 6a As shown, L1 indicates the 2.45 GHz current distribution on the circuit board when the second radiator in the electronic device is formed on the back shell. The current distribution on this circuit board is stronger than the current distribution when both BT antennas are set in the conductive frame. However, due to the large amount of radiation absorption of the walkie BT antenna by the arm, the current distribution on the circuit board is still weak, resulting in less than ideal radiation performance of the antenna.

[0137] Further, see Figure 4 In this embodiment, the second radiator 132 (as a walkie-talkie BT antenna) is placed on the back cover 12 of the watch, and a rectangular reflector 151 is provided on the circuit board at a position opposite to the second radiator 132. At this time, as... Figure 6b As shown, L2 indicates the 2.45 GHz current distribution on the circuit board when the second radiator in the electronic device is formed on the back shell and a rectangular reflector is provided on the circuit board; since the rectangular reflector prevents the arm from absorbing the radiation of the walkie BT antenna, the radiation performance of the walkie BT antenna is improved.

[0138] In another example, see Figure 5 In this embodiment, the second radiator 132 (as a walkie-talkie BT antenna) is placed on the back cover 12 of the watch, and a sawtooth reflector 152 is provided on the circuit board at a position opposite to the second radiator 132. At this time, as... Figure 6c As shown, L3 indicates the 2.45 GHz current distribution on the circuit board when the second radiator is formed on the back shell and a sawtooth reflector is provided on the circuit board in the electronic device; since the side of the sawtooth reflector has the same electrical length as the BT antenna band, the radiation it provides also acts on the BT band, thus improving the radiation performance of the walkie-talkie BT antenna.

[0139] See Figures 7a to 7d , Figure 7aThis is a schematic diagram illustrating the antenna performance of a Bluetooth intercom antenna in a conventional watch according to an exemplary embodiment; Figure 7b This is a schematic diagram illustrating the antenna performance of a first radiator and a second radiator in an electronic device when a second radiator is formed on a back cover, according to an exemplary embodiment. Figure 7c This is a schematic diagram illustrating the antenna performance of the first radiator and the second radiator in an electronic device, according to an exemplary embodiment, when the second radiator is formed on the back shell and a rectangular reflector is provided on the circuit board; Figure 7d This is a schematic diagram illustrating the antenna performance of the first radiator and the second radiator in an electronic device, according to an exemplary embodiment, where the second radiator is formed on the back cover and a sawtooth reflector is provided on the circuit board.

[0140] like Figure 7a As shown in Table 1, taking a traditional watch where both the walkie-talkie BT antenna and the traditional BT antenna are located in the conductive frame and distributed diagonally across the frame as an example, the horizontal axis represents frequency (in GHz), and the vertical axis represents antenna efficiency or isolation (in dB). Curve 711 is the antenna efficiency curve of the traditional BT antenna, curve 712 is the antenna efficiency curve of the walkie-talkie BT antenna, and curve 713 is the isolation between the traditional BT antenna and the walkie-talkie BT antenna. Therefore, as shown in Table 1, when both the walkie-talkie BT antenna and the traditional BT antenna are located in the conductive frame and distributed diagonally across the frame, the antenna efficiency of the walkie-talkie BT antenna is -17.4 dB to -17.1 dB, the antenna efficiency of the traditional BT antenna is -15.7 dB to -14.7 dB, and the isolation between the two BT antennas is -10.4 dB to -9.1 dB.

[0141] like Figure 7b As shown in Table 1, taking an electronic device with a traditional BT antenna mounted on a conductive frame and an intercom BT antenna mounted on a back cover as an example, the horizontal axis represents frequency (in GHz), and the vertical axis represents antenna efficiency or isolation (in dB). Curve 721 is the antenna efficiency curve of the traditional BT antenna, curve 722 is the antenna efficiency curve of the intercom BT antenna, and curve 723 is the isolation between the traditional BT antenna and the intercom BT antenna. Therefore, as shown in Table 1, when the traditional BT antenna is mounted on the conductive frame and the intercom BT antenna is mounted on the back cover, the antenna efficiency of the intercom BT antenna is -14.1 dB to -14 dB, the antenna efficiency of the traditional BT antenna is -12.9 dB to -12.7 dB, and the isolation between the two BT antennas is -15.5 dB to -13.9 dB.

[0142] like Figure 7cAs shown in Table 1, taking an electronic device with a traditional BT antenna mounted on a conductive frame, an intercom BT antenna mounted on a back cover, and a rectangular reflector on the circuit board as an example, the horizontal axis represents frequency (in GHz), and the vertical axis represents antenna efficiency or isolation (in dB). Curve 731 is the antenna efficiency curve of the traditional BT antenna, curve 732 is the antenna efficiency curve of the intercom BT antenna, and curve 733 is the isolation between the traditional BT antenna and the intercom BT antenna. Therefore, as shown in Table 1, when the electronic device has a traditional BT antenna mounted on a conductive frame, an intercom BT antenna mounted on a back cover, and a rectangular reflector on the circuit board, the antenna efficiency of the intercom BT antenna is -12.6 dB to -12.1 dB, the antenna efficiency of the traditional BT antenna is -12.7 dB, and the isolation between the two BT antennas is -21.4 dB to -19.7 dB.

[0143] like Figure 7d As shown in Table 1, taking an electronic device with a traditional BT antenna mounted on a conductive frame, an intercom BT antenna mounted on a back cover, and a sawtooth reflector on the circuit board as an example, the horizontal axis represents frequency (in GHz), and the vertical axis represents antenna efficiency or isolation (in dB). Curve 741 is the antenna efficiency curve of the traditional BT antenna, curve 742 is the antenna efficiency curve of the intercom BT antenna, and curve 743 is the isolation between the traditional BT antenna and the intercom BT antenna. Therefore, as shown in Table 1, when the traditional BT antenna is mounted on the conductive frame, the intercom BT antenna is mounted on the back cover, and a sawtooth reflector is present on the circuit board, the antenna efficiency of the intercom BT antenna is -12 dB, the antenna efficiency of the traditional BT antenna is -12.4 dB, and the isolation between the two BT antennas ranges from -27.3 dB to -26.1 dB.

[0144] Table 1

[0145] Attached Figure BT antenna efficiency for intercom (dB) Traditional BT antenna efficiency (dB) Isolation (dB) Figure 7a -17.4 to -17.1 -15.7 to -14.7 -10.4 to -9.1 Figure 7b -14.1 to -14 -12.9 to -12.7 -15.5 to -13.9 Figure 7c -12.6 to -12.1 -12.7 -21.4 to -19.7 Figure 7d -12 -12.4 -27.3 to -26.1

[0146] along with Figures 7a to 7d The corresponding three iterative upgrades of electronic device structure, and Figure 7a Compared to traditional watches, Figure 7b In the corresponding electronic devices, the two BT antennas are designed separately, with the intercom BT antenna designed on the back cover; in this way, the isolation between the two BT antennas is improved by about 5dB, the efficiency of the intercom BT antenna is improved by about 3dB (i.e., 100%), and the efficiency of the traditional BT antenna is improved by about 2~2.8dB (i.e., 58%~91%). Figure 7c The corresponding electronic devices are through Figure 7b The addition of a rectangular reflector to the corresponding electronic equipment improves the efficiency of the walkie-talkie BT antenna by approximately 1.5 to 1.9 dB (i.e., 40% to 55%).

[0147] Figure 7d The corresponding electronic devices will Figure 7c In the corresponding electronic devices, the rectangular reflector was upgraded to a sawtooth reflector, which improved the efficiency of the BT antenna for intercom by approximately 0.1~0.6dB (i.e., 2%~15%), compared to approximately 0.3dB (i.e., 7%) for the traditional BT antenna; and with Figure 7a Compared to traditional watches, the efficiency of the walkie-talkie BT antenna is improved by an average of about 5.2dB, or about 231%, while the efficiency of the traditional BT antenna is about 2.8dB, or about 91%. The isolation between the walkie-talkie BT antenna and the traditional BT antenna is about 17dB on average.

[0148] Figure 8 This is a structural block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 800 may be a mobile phone, computer, in-vehicle device, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, etc.

[0149] Reference Figure 8 The electronic device 800 may include one or more of the following components: processing component 802, memory 804, power supply component 806, multimedia component 808, audio component 810, input / output (I / O) interface 812, sensor component 814, and communication component 816.

[0150] Processing component 802 typically controls the overall operation of electronic device 800, such as operations associated with at least one of display, telephone call, data communication, camera operation, and recording operation. Processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0151] Memory 804 is configured to store various types of data to support the operation of electronic device 800. Examples of such data include at least one of the following: instructions for any application or method operating on electronic device 800, contact data, phonebook data, messages, pictures, and videos. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0152] Power supply component 806 provides power to various components of electronic device 800. Power supply component 806 may include at least one of the following: a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 800.

[0153] Multimedia component 808 includes a screen that provides an output interface between electronic device 800 and user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a Touch Panel, the screen may be implemented as a touchscreen to receive input signals from the user. The Touch Panel includes one or more touch sensors to sense touches, swipes, and gestures on the Touch Panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When electronic device 800 is in an operating mode, such as a shooting mode or video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0154] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when electronic device 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0155] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, and buttons. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0156] Sensor assembly 814 includes one or more sensors for providing state assessments of various aspects of electronic device 800. For example, sensor assembly 814 may detect the on / off state of electronic device 800, the relative positioning of components such as the display and keypad of electronic device 800, changes in position of electronic device 800 or one of its components, the presence or absence of user contact with electronic device 800, orientation or acceleration / deceleration of electronic device 800, and temperature changes of electronic device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include an optical sensor, such as a complementary metal-oxide-semiconductor (CMOS) or charge-coupled device (CCD) image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include, but is not limited to, at least one of the following: an accelerometer, a gyroscope, a magnetometer, a pressure sensor, and a temperature sensor.

[0157] Communication component 816 is configured to facilitate wired or wireless communication between electronic device 800 and other devices. Electronic device 800 can access wireless networks based on communication standards, such as Wi-Fi, 4G, 5G, or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wide Band (UWB), Bluetooth (BT), and other technologies.

[0158] In an exemplary embodiment, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0159] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including executable instructions or a computer program, which can be executed by a processor 820 of an electronic device 800. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), a compact disc read-only memory (CD-ROM), magnetic tape, floppy disk, and optical data storage device, etc.

[0160] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0161] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An electronic device, characterized in that, include: Conductive middle frame; A back cover covers the conductive frame and is connected to the conductive frame. The antenna module includes a first radiator and a second radiator; The first radiator is formed on the conductive frame; The second radiator is formed on the back shell; The first radiator operates at the same frequency as the second radiator, and the projection position of the first radiator onto the back shell is different from the position of the second radiator on the back shell.

2. The electronic device according to claim 1, characterized in that, The electronic device also includes: The circuit board is installed within the conductive frame; A reflector is disposed on the circuit board and positioned opposite to the second radiator to reflect the wireless signals transmitted and received by the second radiator.

3. The electronic device according to claim 2, characterized in that, The reflector includes a rectangular reflector; or, The reflector includes a sawtooth reflector; the length of the sawtooth side of the sawtooth reflector is the same as the electrical length of the second radiator.

4. The electronic device according to any one of claims 1 to 3, characterized in that, The projection position of the first radiator onto the back shell and the position of the second radiator on the back shell are located at opposite ends of the same side of the back shell.

5. The electronic device according to any one of claims 1 to 3, characterized in that, The first radiator and the second radiator transmit and receive the same type of wireless signal.

6. The electronic device according to any one of claims 1 to 3, characterized in that, The electronic device also includes: The radio frequency module includes a first radio frequency module and a second radio frequency module that transmit and receive the same type of radio frequency signals. The first radiator is connected to the first radio frequency module, and the second radiator is connected to the second radio frequency module.

7. The electronic device according to any one of claims 1 to 3, characterized in that, The antenna module also includes: The third radiator is formed at a different position on the conductive frame than the first radiator. The fourth radiator is formed at a different position on the conductive frame than the third radiator; The operating frequencies of the first radiator, the third radiator, and the fourth radiator are all different.

8. The electronic device according to claim 7, characterized in that, The first radiator and the fourth radiator are located at the same position on the conductive frame and are mounted on the same antenna.

9. The electronic device according to any one of claims 1 to 3, characterized in that, The back cover includes an insulating shell.

10. The electronic device according to any one of claims 1 to 3, characterized in that, The electronic devices include wearable devices.

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