Antenna assembly, electronic equipment main body, electronic equipment, storage medium and control method of electronic equipment

Abstract

An antenna assembly, an electronic device main body, an electronic device, a storage medium and a control method of the electronic device, the antenna assembly comprises a circuit board, a main radiator, a parasitic radiator and a switching circuit, the main radiator is connected with a feed circuit of the circuit board, and the parasitic radiator is connected with the switching circuit. And the switching circuit is used for enabling the main radiator to feed the parasitic radiator under the conduction condition, and the switching circuit is used for enabling the main radiator not to feed the parasitic radiator under the turn-off condition. The parasitic radiator is controlled by the switching circuit, and the switching circuit can enable the main radiator to feed the parasitic radiator, so that the electrical length of the antenna assembly can be increased, and the antenna efficiency of the antenna assembly can be improved. In some application scenarios, if the parasitic radiator participates in radiation, the antenna performance is deteriorated, and the parasitic radiator can be controlled not to participate in radiation of wireless signals through the switching circuit, so that the antenna assembly can maintain better antenna performance in various application scenarios.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an antenna assembly, an electronic device body, an electronic device, a storage medium, and a control method for the electronic device. Background Technology

[0002] In electronic devices, antennas can use a metal frame as the radiator. As electronic devices strive for thinner and smaller designs, the size of the frame is also getting smaller. However, in terms of antenna performance, the larger the radiator size, the higher the antenna efficiency can usually be, and vice versa.

[0003] Currently, in order to solve the problem of low antenna efficiency in electronic devices due to the small size of the frame, electronic devices are equipped with radiators in addition to the metal frame. How to add radiators to improve antenna efficiency is an urgent problem to be solved. Summary of the Invention

[0004] This application provides an antenna assembly, an electronic device body, an electronic device, a storage medium, and a control method for the electronic device to improve antenna efficiency.

[0005] In a first aspect, this application provides an antenna assembly including a circuit board, a main radiator, a parasitic radiator, and a switching circuit; the main radiator is connected to a feeding circuit of the circuit board, the parasitic radiator is connected to the switching circuit, the switching circuit is used to enable the main radiator to feed the parasitic radiator in a conducting state, and the switching circuit is used to prevent the main radiator from feeding the parasitic radiator in a turning-off state.

[0006] In this solution, a parasitic radiator is added, controlled by a switching circuit. This circuit allows the main radiator to power the parasitic radiator, thereby increasing the electrical length of the antenna assembly and improving its efficiency. In some applications, if the parasitic radiator participates in radiation, it can degrade antenna performance. The switching circuit can control the parasitic radiator to prevent it from radiating wireless signals, ensuring optimal antenna performance across various application scenarios.

[0007] In conjunction with the first aspect, in one feasible implementation, the parasitic radiator and the main radiator are spaced apart, the main radiator is coupled to power the parasitic radiator, the switching circuit is connected between ground and the parasitic radiator, and the main radiator is grounded. The parasitic radiator and the main radiator are connected in parallel, and coupled power is achieved between the main radiator and the parasitic radiator.

[0008] In conjunction with the first aspect, in one feasible implementation, the switching circuit is connected between the grounding point of the circuit board and the parasitic radiator. The connection of the switching circuit to the grounding point of the circuit board enables the parasitic radiator to be grounded.

[0009] In conjunction with the first aspect, in one feasible implementation, the switching circuit is electrically connected between the parasitic radiator and the main radiator. When the switching circuit is in the ON state, the main radiator, the switching circuit, and the parasitic radiator are connected in series, and the main radiator can supply power to the parasitic radiator.

[0010] In conjunction with the first aspect, in one feasible implementation, the parasitic radiator is not grounded. The main radiator is connected in series with the parasitic radiator via a switching circuit. The parasitic radiator is not grounded to prevent coupling and feeding between the parasitic radiator and the main radiator when the switching circuit is off.

[0011] In conjunction with the first aspect, in one feasible implementation, the parasitic radiator has a semi-enclosed gap, which can reduce the interference of the parasitic radiator to other antennas disposed within the mid-frame.

[0012] In conjunction with the first aspect, in one feasible implementation, the parasitic radiator includes a first portion and a second portion, the first portion being spaced apart from the second portion, and both the first portion and the second portion being connected to the switching circuit. The first portion and the second portion can be spaced apart to form a gap, which can also reduce the interference of the parasitic radiator to other antennas disposed within the mid-frame.

[0013] In conjunction with the first aspect, in one feasible implementation, the main radiator is arranged in a ring, and the circuit board and the parasitic radiator are located within the area surrounded by the main radiator. Placing the circuit board and the parasitic radiator within the area surrounded by the main radiator facilitates the miniaturization of the antenna assembly.

[0014] In conjunction with the first aspect, in one feasible implementation, the switching circuit is disposed on the circuit board. Integrating the switching circuit onto the circuit board saves space in the antenna assembly and contributes to its miniaturization.

[0015] In conjunction with the first aspect, in one feasible implementation, the antenna assembly further includes a conductive element connecting the parasitic radiator and the switching circuit. Connecting the switching circuit on the circuit board via the conductive element allows for greater flexibility in the circuit's placement on the circuit board compared to having the parasitic radiator directly connected to the switching circuit, eliminating the need for direct contact between the switching circuit and the parasitic radiator.

[0016] In conjunction with the first aspect, in one feasible implementation, the conductive component includes conductive foam and an electrical connection portion. A first end of the conductive foam is connected to the parasitic radiator, a second end of the conductive foam is connected to the first end of the electrical connection portion, and the second end of the electrical connection portion is connected to the switching circuit. The two ends of the conductive foam can be bonded to the parasitic radiator and the electrical connection portion respectively. The end of the electrical connection portion away from the conductive foam is soldered to a circuit board. This simplifies the installation steps of the conductive component and improves the connection stability between the conductive component and the parasitic radiator and the switching circuit.

[0017] In conjunction with the first aspect, in one feasible implementation, a chip is disposed on the first surface of the circuit board facing the parasitic radiator. The electrical connection portion includes a first segment extending along a first direction and a second segment extending along a second direction. The first direction is parallel to the first surface, and the second direction is not parallel to the first surface. The first segment is insulated from the chip. A conductive foam connects the first segment and the parasitic radiator. The second segment connects the first segment and the switching circuit. The second segment can span the chip and connect the switching circuit and the first segment. The switching circuit can be disposed around the chip, improving the area utilization of the circuit board and facilitating its miniaturization.

[0018] Secondly, this application provides an electronic device body, the electronic device body including the antenna assembly described in the first aspect.

[0019] In conjunction with the second aspect, in one feasible implementation, the main body of the electronic device also includes a mid-frame, which surrounds the device and the main radiator is formed on the mid-frame, making full use of the space of the mid-frame, which is beneficial to the miniaturization of the main body of the electronic device.

[0020] In conjunction with the second aspect, in one feasible implementation, the main body of the electronic device further includes a screen and a back cover connected to the mid-frame. The screen, the back cover, and the mid-frame form a receiving space. The circuit board is disposed in the receiving space, and the parasitic radiator is disposed on the surface of the screen facing the receiving space. The parasitic radiator being disposed on the surface of the screen near the circuit board fully utilizes the under-screen space in the main body of the electronic device, which is beneficial for the miniaturization of the main body of the electronic device.

[0021] In conjunction with the second aspect, in one feasible implementation, the main body of the electronic device further includes a screen and a back cover connected to the mid-frame. The screen, the back cover, and the mid-frame form a receiving space. The circuit board is disposed in the receiving space, and the parasitic radiator is disposed on the surface of the back cover facing the receiving space. The parasitic radiator is disposed on the surface of the back cover near the circuit board, and the space between the back cover and the screen facilitates the miniaturization of the main body of the electronic device.

[0022] In conjunction with the second aspect, in one feasible implementation, the main body of the electronic device also includes a battery disposed between the circuit board and the parasitic radiator, wherein the parasitic radiator is connected to the grounding point of the battery through a switching circuit, which facilitates grounding of the parasitic radiator.

[0023] Thirdly, this application provides an electronic device that includes an antenna assembly as described in the first aspect.

[0024] In conjunction with the third aspect, in one feasible implementation, the electronic device is a wearable device.

[0025] Fourthly, this application provides a control method for an electronic device, the electronic device including an antenna assembly, the antenna assembly including a circuit board, a main radiator, a parasitic radiator and a switching circuit; the main radiator is connected to a feeding circuit of the circuit board, the parasitic radiator is connected to the switching circuit, the switching circuit is used to enable the main radiator to feed the parasitic radiator in a conducting state, and the switching circuit is used to prevent the main radiator from feeding the parasitic radiator in a turning state;

[0026] The control method includes:

[0027] When preset conditions are met, the main radiator controls the main radiator to supply power to the parasitic radiator through the switching circuit;

[0028] When the preset conditions are not met, the main radiator is controlled by the switching circuit to prevent it from supplying power to the parasitic radiator.

[0029] In this scheme, the electronic device can determine what type of wireless signal the antenna assembly radiates. If it determines that feeding the parasitic radiator with the main radiator will improve the antenna performance of the antenna assembly (meeting a preset condition), then the main radiator will control the feeding of the parasitic radiator via a switching circuit. If it determines that feeding the parasitic radiator with the main radiator will degrade the antenna performance of the antenna assembly (not meeting the preset condition), then the main radiator will control the non-feeding of the parasitic radiator via a switching circuit. When conducting wireless communication, the electronic device can select whether the main radiator feeds the parasitic radiator or not, based on the state of the antenna assembly, ensuring that the antenna performance of the antenna assembly always remains at its optimal level.

[0030] In conjunction with the fourth aspect, in one feasible implementation, the preset conditions include:

[0031] The communication frequency registered by the electronic device is within the set frequency band;

[0032] The electronic device did not establish a short-range wireless communication connection with any communication device.

[0033] In conjunction with the fourth aspect, in one feasible implementation, the parasitic radiator is spaced apart from the main radiator, the switching circuit is connected between ground and the parasitic radiator, and the main radiator is grounded;

[0034] The step of controlling the main radiator to feed the parasitic radiator through the switching circuit includes:

[0035] The switching circuit is controlled to be in the conducting state, so that the main radiator and the parasitic radiator are coupled and fed together;

[0036] The step of controlling the main radiator not to supply power to the parasitic radiator via the switching circuit includes:

[0037] The switching circuit is controlled to be in the off state so that the main radiator does not supply power to the parasitic radiator.

[0038] In conjunction with the fourth aspect, in one feasible implementation, the switching circuit is electrically connected between the parasitic radiator and the main radiator;

[0039] The step of controlling the main radiator to feed the parasitic radiator through the switching circuit includes:

[0040] The switching circuit is controlled to be in the ON state, so that the parasitic radiator is connected in series with the main radiator.

[0041] The step of controlling the main radiator not to supply power to the parasitic radiator via the switching circuit includes:

[0042] The switching circuit is controlled to be in the off state so that the main radiator does not supply power to the parasitic radiator.

[0043] Fifthly, this application provides an electronic device including a processor and a memory, the memory being used to store computer instructions, and the processor being used to invoke the computer instructions to perform the method as described in the fourth aspect.

[0044] In a sixth aspect, this application provides a storage medium storing computer instructions that, when executed by a processor, implement the method described in the fourth aspect.

[0045] In a seventh aspect, this application provides a chip including a processing circuit and a storage medium storing computer instructions; when the computer instructions are executed by the processing circuit, they implement the method described in the fourth aspect.

[0046] Eighthly, this application provides a computer program product that, when run on a computer, causes the computer to perform the method described in the fourth aspect. Attached Figure Description

[0047] Figure 1 A three-dimensional structural diagram of a watch provided in an embodiment of this application;

[0048] Figure 2 This is a schematic diagram of the antenna assembly provided in an embodiment of this application;

[0049] Figure 3 A simulation diagram of the current path when a parasitic radiator in an antenna assembly provided in this application participates in radiating wireless signals;

[0050] Figure 4 This is a schematic diagram of the structure of a table body provided in an embodiment of this application;

[0051] Figure 5 A bottom view showing the connection between the screen and the parasitic radiator provided in an embodiment of this application;

[0052] Figure 6 A side view of the connection between the screen and the parasitic radiator provided in an embodiment of this application;

[0053] Figure 7 This is a schematic diagram of another table body structure provided in an embodiment of this application;

[0054] Figure 8 This is a schematic diagram of another table body provided in an embodiment of this application;

[0055] Figure 9 A side view showing the connection between the rear cover and the parasitic radiator provided in an embodiment of this application;

[0056] Figure 10 This is a schematic diagram of another table body provided in an embodiment of this application;

[0057] Figure 11 This is a partial schematic diagram of a table body provided in an embodiment of this application;

[0058] Figure 12 A schematic diagram of a coupling feed between a main radiator and a parasitic radiator provided for an embodiment of this application;

[0059] Figure 13 Antenna efficiency curves for antenna assemblies provided in this application embodiment, showing whether the parasitic radiator is grounded or not;

[0060] Figure 14 This is a partial schematic diagram of another type of table body provided in an embodiment of this application;

[0061] Figure 15 A schematic diagram illustrating a main radiator connected in series with a parasitic radiator via a switching circuit, as provided in an embodiment of this application;

[0062] Figure 16 A schematic diagram showing the connection of the switching circuit provided in the embodiments of this application to the parasitic radiator and ground, respectively;

[0063] Figure 17 A schematic diagram showing the connection of the switching circuit provided in the embodiments of this application to the parasitic radiator and the main radiator, respectively;

[0064] Figure 18 This is a schematic diagram of the structure of the parasitic radiator provided in the embodiments of this application;

[0065] Figure 19 This is a schematic diagram of another parasitic radiator provided in an embodiment of this application;

[0066] Figure 20 This is a schematic diagram of the structure of another antenna assembly provided in an embodiment of this application;

[0067] Figure 21 This is a schematic diagram of the structure of another antenna assembly provided in an embodiment of this application;

[0068] Figure 22 This is a schematic diagram of the structure of another antenna assembly provided in an embodiment of this application;

[0069] Figure 23 This is a partial schematic diagram of another type of table body provided in an embodiment of this application;

[0070] Figure 24 A flowchart illustrating a control method for an electronic device provided in an embodiment of this application;

[0071] Figure 25 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0072] Figure 26 This is a schematic diagram of the structure of another electronic device provided in an embodiment of this application;

[0073] Figure 27 A flowchart illustrating another control method for an electronic device provided in an embodiment of this application.

[0074] Explanation of reference numerals in the attached figures:

[0075] 1000, Watch; 100, Watch body; 10, Antenna assembly; 10a, Total radiator; 11, Main radiator; 12, Parasitic radiator; 12a, Gap; 12b, First part; 12c, Second part; 13, Circuit board; 13a, First surface; 14, Switching circuit; 14a, First sub-matching circuit; 14b, Second sub-matching circuit; 15, Conductive component; 15a, Conductive foam; 15b, Electrical connection; 15c, First segment; 15d, Second segment; 16, Chip; 17, Shielding cover; 20, Mid-frame; 30, Screen; 40, Back cover; 50, Battery; 60, Speaker; 70, Motor; 200, Watch strap. Detailed Implementation

[0076] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0077] This application provides an electronic device, which in the embodiments of this application may be a mobile phone, tablet computer, laptop computer, watch, smart helmet, smart glasses, etc. The electronic device may also be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, etc.

[0078] In some embodiments, the electronic device may be a wearable device; for example, a watch may be a wearable device. See [link to relevant documentation]. Figure 1 The watch 1000 includes a watch body 100 and a watch strap 200, which are connected. When the user uses the watch 1000, the watch strap 200 can be wrapped around the user's wrist, and the watch body 100 can display the time.

[0079] The electronic device provided in this application may include an electronic device body, which includes an antenna assembly capable of transmitting or receiving wireless signals. The wireless component of the electronic device may employ one or more communication technologies to communicate with other communication devices. These communication technologies include: Bluetooth (BT), Global Positioning System (GPS), Global Navigation Satellite System (GNSS), Wireless Fidelity (WiFi), Near Field Communication (NFC), Infrared (IR), ZigBee, Global System for Mobile Communications (GSM), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), 5G, and other future communication technologies.

[0080] Please see Figure 2 The antenna assembly 10 includes a printed circuit board (PCB) 13, a main radiator 11, a parasitic radiator 12, and a switching circuit 14. The main radiator 11 is connected to a feed circuit (not shown) on the PCB 13, and the parasitic radiator 12 is connected to the switching circuit 14. The switching circuit 14 is used to enable the main radiator 11 to feed the parasitic radiator 12 when in the on state, and to prevent the main radiator 11 from feeding the parasitic radiator 12 when in the off state. The feed circuit is a combination of all circuits used for receiving and transmitting radio frequency signals. The feed circuit may include a transceiver and an RF front end. In some cases, the term "feed circuit" is narrowly interpreted as a radio frequency integrated circuit (RFIC), which can be considered to include both the RF front end chip and the transceiver. The feed circuit has the function of converting radio waves (e.g., radio frequency signals) into electrical signals (e.g., digital signals).

[0081] The main radiator 11 and the parasitic radiator 12 can be metals or alloys. For example, the main radiator 11 can be made of at least one of copper, aluminum, titanium, copper alloy, aluminum alloy, titanium alloy, and steel, and the parasitic radiator 12 can be made of at least one of copper, aluminum, titanium, copper alloy, aluminum alloy, titanium alloy, and steel.

[0082] Circuit board 13 powers the main radiator 11. When the switching circuit 14 is off, the main radiator 11 can transmit or receive wireless signals independently. When the switching circuit 14 is on, the main radiator 11 powers the parasitic radiator 12. The main radiator 11 and the parasitic radiator 12 together form a total radiator 10a, which can transmit or receive wireless signals.

[0083] Compared to the main radiator 11, the total radiator 10a has an additional parasitic radiator 12. The total radiator 10a is larger in size and has a longer electrical length. A longer electrical length results in higher antenna efficiency for the antenna assembly 10 and stronger signal strength for the electronic device. The electrical length is the ratio of the physical length of the microstrip transmission line to the wavelength of the transmitted electromagnetic wave. The antenna assembly 10 is used in electronic devices, with the main radiator 11 arranged in a ring around it, and the parasitic radiator 12 positioned within the space surrounding the main radiator 11. When the main radiator 11 is fed by the parasitic radiator 12, please refer to [link to relevant documentation]. Figure 3 The main radiator 11 is fed by the parasitic radiator 12. Simulations show that when the antenna assembly 10 radiates low-frequency signals (below 1 GHz, such as 700 MHz), the current distribution shows that in addition to the strong current in the main radiator 11, the parasitic radiator 12 also exhibits strong current resonance, effectively extending the low-frequency current path. In other words, feeding the main radiator 11 with the parasitic radiator 12 increases the electrical length of the antenna assembly 10.

[0084] It should be noted that when electronic devices communicate wirelessly through antenna assembly 10, in some frequency bands (e.g., the first frequency band), radiating wireless signals through the total radiator 10a can enhance the antenna performance of antenna assembly 10, improving its performance by 1dB to 2dB in the first frequency band. However, in other frequency bands (e.g., the second frequency band, which does not overlap with the first frequency band), radiating wireless signals through the total radiator 10a will degrade the antenna performance of antenna assembly 10. When antenna assembly 10 needs to radiate signals in the first frequency band, the switching circuit 14 controls the main radiator 11 to power the parasitic radiator 12 to form the total radiator 10a. The total radiator 10a then radiates wireless signals in the first frequency band, improving the antenna performance of antenna assembly 10. When the antenna assembly 10 needs to radiate the second frequency band signal, the switching circuit 14 is turned off, the main radiator 11 does not supply power to the parasitic radiator 12, and the main radiator 11 radiates the wireless signal alone, preventing the parasitic radiator 12 from degrading the antenna performance of the antenna assembly 10 when radiating the second frequency band signal.

[0085] In this application, by adding a parasitic radiator 12, which is controlled by a switching circuit 14, the main radiator 11 can power the parasitic radiator 12. This increases the electrical length of the antenna assembly 10 and improves its antenna efficiency. In some applications, if the parasitic radiator 12 participates in radiating wireless signals, it will degrade antenna performance. The switching circuit 14 can control the parasitic radiator 12 to not participate in radiating wireless signals, allowing the antenna assembly 10 to maintain optimal antenna performance in various application scenarios.

[0086] In one possible application scenario, when the electronic device performs functions such as making calls and sending text messages using low-frequency signals, the switching circuit 14 can be turned on, causing the main radiator 11 and the parasitic radiator 12 to form a total radiator 10a, thereby improving the antenna performance of the antenna assembly 10 and further enhancing the wireless signal strength of the electronic device. When the electronic device performs communication functions such as Bluetooth, GPS positioning, global navigation satellite, WIFI, and ZigBee, the switching circuit 14 can be turned off, allowing the main radiator 11 to radiate wireless signals alone, preventing the parasitic radiator 12 from participating in radiation and degrading the antenna performance of the antenna assembly 10, thus avoiding negative impacts on the wireless communication of the electronic device. When electronic devices communicate via intermediate frequency (IF) or high frequency (HF) signals, the switching circuit 14 can be turned off, allowing the main radiator 11 to radiate the wireless signal alone. This prevents the parasitic radiator 12 from participating in the radiation and degrading the antenna performance of the antenna assembly 10, thus avoiding negative impacts on the wireless communication of the electronic device. Gain in the antenna assembly 10 refers to the degree to which the antenna input power is concentrated during radiation. Generally, the narrower the main lobe and the smaller the side lobes of the antenna assembly's radiation pattern, the higher the gain.

[0087] In this design, the wireless signal frequency in the first frequency band can be low, medium, or high, and the wireless signal frequency in the second frequency band can also be low, medium, or high. The first and second frequency bands do not overlap. For example, if the wireless signal frequency in the first frequency band is low, then the wireless signal frequency in the second frequency band is not low. If the wireless signal frequency in the first frequency band is medium, then the wireless signal frequency in the second frequency band is not medium. If the wireless signal frequency in the first frequency band is high, then the wireless signal frequency in the second frequency band is not high.

[0088] In this application, low-frequency signals are wireless signals with frequencies below 1 GHz; intermediate-frequency signals are wireless signals with frequencies between 1 GHz and 2 GHz; and high-frequency signals are wireless signals with frequencies between 2 GHz and 3 GHz.

[0089] Please refer to the embodiments provided in this application. Figure 2 and Figure 4The electronic device body also includes a middle frame 20, which forms a ring around which a main radiator 11 is formed. The main radiator 11 can be the middle frame 20 or a part of the middle frame 20. The main radiator 11 forms a ring around the circuit board 13, the switching circuit 14, and the parasitic radiator 12. The switching circuit 14 can be located on the circuit board 13 or not. Integrating the switching circuit 14 on the circuit board 13 saves space in the electronic device body and facilitates miniaturization. When the electronic device is a watch, the electronic device body is the watch body 100.

[0090] In some embodiments, the electronic device body further includes a screen 30 and a back cover 40 connected to a mid-frame. The screen 30, back cover 40, and mid-frame 20 form a receiving space. A circuit board 13 is disposed in the receiving space. The screen 30 and back cover 40 are spaced apart along the thickness direction of the electronic device body, and the circuit board 13 is located in the gap between the back cover 40 and the screen 30. Please refer to [link / reference]. Figure 5 and Figure 6 The parasitic radiator 12 is fixedly connected to the screen 30. The parasitic radiator 12 can be adhered to the surface of the screen 30 facing the receiving space, such as by applying adhesive to the side of the screen 30 facing the circuit board 13, and using the adhesive to fix the parasitic radiator 12 to the surface of the screen 30 facing the receiving space. The parasitic radiator 12 can also be fixed to the screen 30 using other fixing methods. This application does not impose specific limitations on the fixing method of the parasitic radiator 12 to the screen 30.

[0091] The main body of the electronic device also includes a battery 50, a speaker 60, and a motor 70. The battery 50 can power the circuit board 13, the speaker 60, and the motor 70. In one possible implementation, the back cover 40 is spaced apart from the circuit board 13 along the thickness direction of the main body of the electronic device, and the motor 70, battery 50, and speaker 60 are disposed between the back cover 40 and the circuit board 13. The main radiator 11 can be grounded by connecting to the grounding point of the circuit board 13. In this application, the circuit board 13 can have multiple grounding points, and the main radiator 11 can also be grounded by connecting to the grounding point of the battery 50, speaker 60, or motor 70. The parasitic radiator 12 can be grounded by connecting to the grounding point of the circuit board 13, and the parasitic radiator 12 can also be grounded by connecting to the grounding point of the battery 50, speaker 60, or motor 70. It should be noted that the main radiator 11 can also be grounded by connecting to other components of the electronic device, and the parasitic radiator 12 can also be grounded by connecting to other components of the electronic device. This application does not limit the specific grounding method of the main radiator 11 or the parasitic radiator 12.

[0092] Since the motor 70, battery 50 and speaker 60 are located between the back cover 40 and the circuit board 13, the circuit board 13 is adjacent to the screen 30, the parasitic radiator 12 is located on the surface of the screen 30 facing the circuit board 13, and the switch circuit 14 is located on the circuit board 13, the parasitic radiator 12 is relatively close to the switch circuit 14 on the circuit board 13, which facilitates the connection between the parasitic radiator 12 and the switch circuit 14.

[0093] In one possible implementation, please see Figure 7 In the thickness direction of the electronic device body, the screen 30 and the circuit board 13 are spaced apart, and the parasitic radiator 12 is disposed on the surface of the screen 30 facing the circuit board 13. The battery 50, motor 70, and speaker 60 can be disposed between the circuit board and the screen 30. Specifically, in the thickness direction of the electronic device body, the parasitic radiator 12 and the circuit board 13 are spaced apart, and the battery 50 is disposed in the gap between the circuit board 13 and the parasitic radiator 12. Compared with the circuit board 13, the battery 50 is closer to the parasitic radiator 12. The parasitic radiator 12 is connected to the grounding point of the battery 50 through the switching circuit 14, which facilitates the grounding of the parasitic radiator 12.

[0094] In some embodiments, see Figure 8 and Figure 9 The main body of the electronic device also includes a screen 30 and a back cover 40 connected to the mid-frame 20. The screen 30, back cover 40, and mid-frame 20 form an accommodating space. A circuit board 13 is disposed in the accommodating space. The screen 30 and back cover 40 are spaced apart along the thickness direction of the main body of the electronic device, and the circuit board 13 is located between the back cover 40 and the screen 30. The parasitic radiator 12 is fixedly connected to the back cover 40. The parasitic radiator 12 can be adhered to the surface of the back cover 40 facing the accommodating space, such as by applying adhesive to the side of the back cover 40 facing the circuit board 13, and using the adhesive to fix the parasitic radiator 12 to the surface of the back cover 40 facing the accommodating space. The parasitic radiator 12 can also be fixed to the back cover 40 using other fixing methods. This application does not specifically limit the fixing method of the parasitic radiator 12 to the back cover 40.

[0095] The main body of the electronic device also includes a battery 50, a speaker 60, and a motor 70. The battery 50 can power the circuit board 13, the speaker 60, and the motor 70. In one possible implementation, the screen 30 and the circuit board 13 are spaced apart along the thickness direction of the main body of the electronic device, and the motor 70, battery 50, and speaker 60 are disposed between the screen 30 and the circuit board 13. Since the motor 70, battery 50, and speaker 60 are disposed between the screen 30 and the circuit board 13, the circuit board 13 is adjacent to the back cover 40. The parasitic radiator 12 is disposed on the surface of the back cover 40 facing the receiving space, and the switching circuit 14 is disposed on the circuit board 13. The parasitic radiator 12 is relatively close to the switching circuit 14 on the circuit board 13, which facilitates the connection between the parasitic radiator 12 and the switching circuit 14.

[0096] In some embodiments, see Figure 10 The parasitic radiator 12 can be disposed on the surface of the rear cover 40 facing the receiving space. In the thickness direction of the electronic device body, the parasitic radiator 12 and the circuit board 13 are spaced apart, and the battery 50 is disposed between the circuit board 13 and the parasitic radiator 12. Compared with the circuit board 13, the battery 50 is closer to the parasitic radiator 12. The parasitic radiator 12 is connected to the grounding point of the battery 50 through the switching circuit 14, which facilitates the grounding of the parasitic radiator 12.

[0097] In the embodiments provided in this application, the main radiator 11 is capable of feeding the parasitic radiator 12. See also... Figure 11 and Figure 12 The main radiator 11 and the parasitic radiator 12 can be coupled and fed together. The main radiator 11 surrounds the parasitic radiator 12, and the parasitic radiator 12 and the main radiator 11 are spaced apart. The parasitic radiator 12 is grounded through a switching circuit 14, while the main radiator 11 is directly grounded. When the switching circuit 14 is in the conducting state, the parasitic radiator 12 is grounded, and the main radiator 11 is always grounded. At this time, the parasitic radiator 12 and the main radiator 11 are connected in parallel, and coupled feeding is achieved between the main radiator 11 and the parasitic radiator 12. The switching circuit 14 can control whether the parasitic radiator 12 is grounded or not. Please refer to [link to relevant documentation]. Figure 13 If antenna assembly 10 is used as a cellular 4G or GPS L1 antenna, the parasitic radiator 12 in the cellular 4G or GPS L1 antenna... Figure 11Labeled as ANT1, when the parasitic radiator 12 is grounded, the antenna efficiency of antenna assembly 10 as a cellular 4G antenna is higher than that as a GPS L1 antenna when radiating low-frequency signals. When the parasitic radiator 12 is not grounded, the antenna efficiency of antenna assembly 10 as a GPS L1 antenna is higher than that as a cellular 4G antenna. If antenna assembly 10 is used as a GPS L5, BT, or WIFI 2.4GHz antenna, whether the parasitic radiator 12 is grounded or not has little impact on the antenna efficiency of antenna assembly 10. The parasitic radiator in GPS L5, BT, or WIFI 2.4GHz antennas... Figure 13 It is marked as ANT2.

[0098] Please see Figure 14 and Figure 15 The switching circuit 14 is connected between the parasitic radiator and the main radiator 11. When the switching circuit 14 is in the conducting state, the main radiator 11, the switching circuit 14, and the parasitic radiator 12 are connected in series, and the main radiator 11 can supply power to the parasitic radiator 12. If the main radiator 11, the switching circuit 14, and the parasitic radiator 12 are connected in series, the parasitic radiator 12 is not grounded, and the main radiator 11 can be grounded or not.

[0099] Please refer to the embodiments provided in this application. Figure 16 and Figure 17 The switching circuit 14 may include one or more matching sub-circuits. When one matching sub-circuit in the switching circuit 14 is turned on, the switching circuit 14 is in the on state. The switching circuit 14 may include a first matching sub-circuit and a second matching sub-circuit. When the parasitic radiator 12 is used as the radiator of different antennas, the switching circuit 14 can turn on different sub-matching circuits, so that the main radiator 11 and the parasitic radiator 12 are fed. Different sub-matching circuits match different antennas. For example, if the antenna assembly 10 can be used as a cellular 4G antenna or a GPS L1 antenna, the first sub-matching circuit 14a corresponds to the cellular 4G antenna, and the second sub-matching circuit 14b corresponds to the GPS L1 antenna. When the antenna assembly 10 is used as a cellular 4G antenna, the first sub-matching circuit 14a can be turned on; when the antenna assembly 10 is used as a GPS L1 antenna, the second sub-matching circuit 14b can be turned on.

[0100] Please refer to the embodiments provided in this application. Figure 18 , Figure 19 and Figure 20The parasitic radiator 12 has a semi-enclosed gap 12a. The semi-enclosed gap 12a can reduce the interference of the parasitic radiator 12 on other antennas located within the mid-frame 20. For example, the semi-enclosed gap 12a can reduce the eddy current effect of the parasitic radiator 12 on the NFC antenna located below the screen 30. The shape of the parasitic radiator 12 can be as follows: Figure 18 and Figure 19 As shown, the parasitic radiator 12 can also be other shapes, and this application does not limit the specific shape of the parasitic radiator 12.

[0101] Please see Figure 21 and Figure 22 The parasitic radiator 12 can also be divided into a first part 12b and a second part 12c, which are spaced apart and have a gap 12a between them. This gap 12a can also reduce the interference of the parasitic radiator 12 on other antennas installed in the middle frame 20. Both the first part 12b and the second part 12c are connected to the switching circuit 14. It should be noted that if the parasitic radiator 12 is coupled and fed to the main radiator 11, the first part 12b and the second part 12c can be connected to the same end of the switching circuit 14, and the other end of the switching circuit 14 is grounded. If the parasitic radiator 12 is connected in series with the main radiator 11 through the switching circuit 14, the first part 12b and the second part 12c can be connected to the same end of the switching circuit 14, and the other end of the switching circuit 14 is connected to the main radiator 11. The parasitic radiator 12 can also be divided into multiple parts, such as three, four, or more parts. This application does not make a specific limitation on how many parts the parasitic radiator 12 is divided into.

[0102] In the main body of the electronic device provided in this application, taking the parasitic radiator 12 disposed on the surface of the screen 30 facing the receiving space as an example, regardless of whether the switch circuit 14 is connected between the ground and the parasitic radiator 12, or between the parasitic radiator 12 and the main radiator 11, the connection between the switch circuit 14 and the parasitic radiator 12 can adopt the same connection method. In one possible implementation, the parasitic radiator 12 and the circuit board 13 are spaced apart, the switch circuit board 13 is disposed on the circuit board 13, and the antenna assembly also includes a conductive element 15, which connects the parasitic radiator 12 and the switch circuit 14.

[0103] Please see Figure 23The conductive component 15 includes conductive foam 15a and an electrical connection portion 15b. A first end of the conductive foam 15a is connected to the parasitic radiator 12, and a second end of the conductive foam 15a is connected to the first end of the electrical connection portion 15b. The second end of the electrical connection portion 15b is connected to the switching circuit 14. Specifically, the surface of the first end of the conductive foam 15a is bonded to the surface of the parasitic radiator 12 facing the accommodating space, and the surface of the second end of the conductive foam 15a is bonded to the first end of the electrical connection portion 15b. The second end of the electrical connection portion 15b is soldered to the switching circuit 14 on the circuit board 13. In the embodiments provided in this application, the material of the electrical connection portion 15b can be conductive metals or alloys such as copper, silver, or tin. The conductive component 15 has a simple structure. The conductive foam 15a can be connected to the parasitic radiator 12 and the electrical connector respectively through surface mount technology (SMT). Specifically, the two ends of the conductive foam 15a can be connected to the parasitic radiator 12 and the electrical connector 15b respectively by adhesive bonding. Only the second end of the electrical connector 15b needs to be soldered to the circuit board 13, which can simplify the installation steps of the conductive component 15 and improve the connection stability of the conductive component 15 to the parasitic radiator 12 and the switching circuit 14.

[0104] A chip 16 is integrated on the circuit board 13, and there can be multiple chips 16. When setting the switch circuit 14 on the circuit board 13, it is necessary to avoid the location of the chip 16. In this application, a conductive element 15 can cross the chip 16 to connect the switch circuit 14 and the parasitic radiator 12. Specifically, the chip 16 is set on the first surface 13a of the circuit board 13 facing the parasitic radiator 12. The electrical connection portion 15b includes a first segment 15c extending along a first direction and a second segment 15d extending along a second direction. The first direction is parallel to the first surface, and the second direction is not parallel to the first surface 13a. The first segment 15c is set on the surface of the chip 16 facing away from the circuit board 13. The first segment 15c is insulated from the chip 16. The conductive foam 15a connects the first segment 15c and the parasitic radiator 12. The second segment 15d connects the first segment 15c and the switch circuit 14. The switch circuit 14 can be set around the chip 16. For example, the circuit board 13 can set the switch circuit 14 at the 9 o'clock position of the watch 1000. The second segment 15d is soldered to the switch circuit 14 on the circuit board 13.

[0105] The circuit board 13 may also be equipped with a shielding cover 17, which can cover the chip 16. The shielding cover 17 is made of metal, such as stainless steel or nickel silver. The shielding cover is used to shield electronic signals and prevent them from interfering with the chip 16.

[0106] The first segment 15c and the chip 16 are insulated from each other. An insulating film can be placed between the first segment 15c and the chip 16. Specifically, since the chip 16 is provided with a shielding cover 17, the insulating film can be placed between the shielding cover 17 and the first segment 15c.

[0107] This application also provides a control method for an electronic device. The electronic device includes an antenna assembly 10, which includes a circuit board 13, a main radiator 11, a parasitic radiator 12, and a switching circuit 14. The main radiator 11 is connected to the feeding circuit of the circuit board 13, and the parasitic radiator 12 is connected to the switching circuit 14. The switching circuit 14 is used to enable the main radiator 11 to feed the parasitic radiator 12 when it is in a conducting state, and to enable the main radiator 11 not to feed the parasitic radiator 12 when it is in a turning state.

[0108] Please see Figure 24 The control methods include:

[0109] S100, when the preset conditions are met, the main radiator controls the main radiator to supply power to the parasitic radiator through the switching circuit;

[0110] S200, when the preset conditions are not met, controls the main radiator not to supply power to the parasitic radiator through the switching circuit.

[0111] The electronic device can control the main radiator 11 to supply power to the parasitic radiator 12 through the switching circuit 14, and can also control the main radiator 11 not to supply power to the parasitic radiator 12 through the switching circuit 14, and the off state and on state of the switching circuit 14 can be switched between each other.

[0112] When the antenna assembly 10 of the electronic device radiates a wireless signal, the electronic device can determine what type of wireless signal the antenna assembly 10 radiates. If it is determined that feeding the parasitic radiator 12 with the main radiator 11 will bring gain to the antenna performance of the antenna assembly 10 (meeting a preset condition), then the main radiator 11 will control the parasitic radiator 12 to be fed with power through the switching circuit 14. If it is determined that feeding the parasitic radiator 12 with power will degrade the antenna performance of the antenna assembly 10 (not meeting the preset condition), then the main radiator 11 will not feed the parasitic radiator 12 with power through the switching circuit 14. When the electronic device is conducting wireless communication, it can select whether the main radiator 11 feeds the parasitic radiator 12 or not, based on the state of the antenna assembly 10, so that the antenna performance of the antenna assembly 10 always maintains optimal antenna performance.

[0113] The preset conditions include:

[0114] The electronic device is registered to a communication frequency within a set frequency band; the electronic device has not established a short-range wireless communication connection with any other communication device.

[0115] In this application, the set frequency can be low frequency, medium frequency, or high frequency. When the set frequency band is such that the parasitic radiator 12 is coupled to the main radiator 11 for power supply when the antenna assembly 10 radiates a wireless signal, it can bring gain to the antenna efficiency of the antenna assembly 10. If the set frequency band is the first frequency band, the communication frequency registered by the electronic device is in the first frequency band, and the electronic device has not established a short-range wireless communication connection with any communication device, then the preset condition is met.

[0116] In the embodiments provided in this application, short-range wireless communication connections include: Bluetooth (BT) communication, Global Positioning System (GPS) communication, Global Navigation Satellite System (GNSS) communication, Wireless Fidelity (WiFi) wireless network communication, ZigBee communication, etc. It should be noted that when the electronic device performs short-range wireless communication, the main radiator 11 feeds the parasitic radiator 12, which may degrade the antenna performance of the antenna assembly 10 in the electronic device. Therefore, when the electronic device performs short-range wireless communication, the control switch circuit 14 is in the off state, so that the parasitic radiator 12 does not participate in radiating wireless signals.

[0117] For example, antenna assembly 10 can be used as two or more antennas simultaneously. Antenna assembly 10 can be used as a cellular low-frequency antenna and also as a GNSS antenna. The participation of parasitic radiator 12 in radiating radio signals (with the main radiator 11 feeding the parasitic radiator 12) can improve the antenna performance of the cellular low-frequency antenna, but the participation of parasitic radiator 12 in radiating radio signals (with the main radiator 11 feeding the parasitic radiator 12) will degrade the antenna performance of the GNSS antenna. Electronic devices can prioritize the antenna performance of the GNSS antenna. Specifically, if the low-frequency signal registered by antenna assembly 10 is within a set frequency range, and antenna assembly 10 is also used as an antenna to implement GNSS functionality, then the preset condition is not met.

[0118] In the embodiments provided in this application, the parasitic radiator 12 is spaced apart from the main radiator 11, the switching circuit 14 is connected between the ground and the parasitic radiator 12, and the main radiator 11 is grounded.

[0119] The main radiator 11 is controlled by the switching circuit 14 to feed the parasitic radiator 12, including:

[0120] The control switch circuit 14 is in the on state, so that the main radiator 11 and the parasitic radiator 12 are coupled and fed;

[0121] When the switching circuit 14 is in the ON state, both the main radiator 11 and the parasitic radiator 12 are grounded and connected in parallel.

[0122] Controlling the main radiator 11 to prevent it from supplying power to the parasitic radiator 12 via the switching circuit 14 includes:

[0123] The control switch circuit 14 is in the off state, so that the main radiator 11 does not supply power to the parasitic radiator 12.

[0124] The switching circuit 14 is electrically connected between the parasitic radiator 12 and the main radiator 11;

[0125] The main radiator 11 is controlled by the switching circuit 14 to feed the parasitic radiator 12, including:

[0126] The control switch circuit 14 is in the on state, so that the parasitic radiator 12 is connected in series with the main radiator 11.

[0127] Controlling the main radiator 11 to prevent it from supplying power to the parasitic radiator 12 via the switching circuit 14 includes:

[0128] The control switch circuit 14 is in the off state, so that the main radiator 11 does not supply power to the parasitic radiator 12.

[0129] In some embodiments, see Figure 25 The electronic device may include a modem (modulator & demodulator, MODEM), a microcontroller unit (MCU), and a Global Navigation Satellite System (GNSS) module. The modem includes a FESS subsystem, and the MCU has a smart sensor hub. In the embodiments provided in this application, the modem and microcontroller unit constitute an application processor (AP).

[0130] Please refer to the embodiments provided in this application. Figure 26This application enables cross-module communication between the modem and GNSS, GPS, or Bluetooth modules via a SensorHub. Specifically, when the electronic device determines whether the state of the antenna assembly 10 meets preset conditions: it obtains the state of the GNSS module through the SensorHub and forwards it to the modem. After receiving the GNSS module's operating status, the modem configures the switching circuit 14 according to whether the GNSS module is working and the specific frequency band registered by the modem. If the GNSS module is not turned on and the specific frequency band registered by the modem is the set frequency band, the modem controls the switching circuit 14 to be in the on state through the FESS subsystem, allowing the parasitic radiator 12 to participate in radiating wireless signals. If the specific frequency band registered by the modem is outside the set frequency band, or the GNSS module is in the on state, the modem controls the switching circuit 14 to be in the off state through the FESS subsystem, preventing the parasitic radiator 12 from participating in radiating wireless signals.

[0131] When electronic devices are performing certain functions (such as being in airplane mode or in long standby mode), the modem is powered off (not working). When the modem is powered on again (when the electronic device exits airplane mode or long standby mode), the modem sends a message to the GNSS module. After receiving the message from the modem, the GNSS module reports its status.

[0132] In the embodiments provided in this application, before determining that the electronic device meets the preset conditions, please refer to... Figure 27 First, check if the modem is working. If not (the switching circuit is not working), the switching circuit will not be powered on. The modem is working when the electronic device is in normal use, such as making calls or sending text messages. When the electronic device is in airplane mode or ultra-long standby mode, the modem does not work.

[0133] When the modem is operational, the system further determines whether the electronic device has registered and set a frequency band. If not, the FESS subsystem controls the switching circuit to remain off. If so, it further checks whether the electronic device has established a short-range wireless communication connection with the communication device. If so, the FESS subsystem controls the switching circuit to be in the off state, and the parasitic radiator does not participate in radiating wireless signals. If not, the FESS subsystem controls the switching circuit to be in the on state, and the parasitic radiator participates in radiating wireless signals.

[0134] It should be noted that whether an electronic device has established a short-range wireless communication connection with a communication device can be determined based on whether the electronic device is performing certain functions. For example, when the electronic device has Bluetooth, GNSS, GPS, WIFI, or other functions enabled, it can be considered that the electronic device has established a short-range wireless communication connection with the communication device.

[0135] In some embodiments, the electronic device may also include other communication modules, such as a Global Positioning System (GPS) module, a Bluetooth (BT) module, etc. The GPS or Bluetooth module also reports its own operating status to the modem via the Sensor Hub. When the modem is powered on again (the electronic device exits airplane mode, ultra-long standby, etc.), the modem sends a message to the GPS module and / or Bluetooth module. Upon receiving the message from the modem, the GPS module and / or Bluetooth module report its own status.

[0136] In the embodiments provided in this application, if the GNSS module, GPS module, or Bluetooth module is in an on state, and the GNSS module, GPS module, or Bluetooth module does not report its own status to the Modem within a preset time, the Modem also considers the GNSS module, GPS module, or Bluetooth module to be in an on state. The preset time can be 1 minute, 2 minutes, 3 minutes, etc., and this application does not limit the specific value of the preset time. In one possible scenario, when the antenna component 10 of the electronic device simultaneously functions as a GPS antenna and a cellular low-frequency antenna, if the GPS antenna is in an on state, even if the GPS module does not report its own status to the Modem within a preset time, the Modem considers the GPS antenna to be in an on state. Within the preset time, the Modem controls the switching circuit 14 to be in a off state through the FESS subsystem to prevent the switching circuit 14 from being mistakenly turned on when the GPS antenna has a poor signal. It should be noted that when the GPS antenna has a poor signal, the GPS module may not be able to report its own status to the Modem across modules.

[0137] This application also provides an electronic device including a processor and a memory. The memory stores computer instructions, and the processor invokes these instructions to execute the methods described above. Specifically, the electronic device also includes a communication interface, and the processor, memory, and communication interface are connected via a bus. When the processor executes the computer instructions stored in the memory, it controls the communication interface to receive and send signals to complete the steps in the methods described above. The memory can be integrated into the processor or disposed separately from it.

[0138] The communication interface functionality can be implemented using transceiver circuits or dedicated transceiver chips. The processor can be implemented using dedicated processing chips, processing circuits, processors, or general-purpose chips. The program code implementing the processor and communication interface functionality can be stored in memory, and the general-purpose processor executes the code in memory to implement the processor and communication interface functions.

[0139] This application provides a storage medium that stores computer instructions, which, when executed by a processor, implement the method described above.

[0140] This application provides a chip, which includes a processing circuit and a storage medium. The storage medium stores computer instructions. When the computer instructions are executed by the processing circuit, the method described above is implemented.

[0141] This application provides a computer program product that, when run on a computer, causes the computer to perform the method described above.

[0142] In actual electronic devices (terminals or servers), multiple processors and memories may exist. Memory can also be called storage medium or storage device, etc., and the embodiments of this application do not limit this.

[0143] The processor can be a central processing unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0144] It should also be understood that the memory mentioned in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

[0145] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory is integrated into the processor.

[0146] It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

[0147] In addition to the data bus, the bus may also include a power bus, a control bus, and a status signal bus.

[0148] It should be understood that expressions such as “comprising” and “may include” used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as “comprising” and / or “having” are to be interpreted as indicating a particular characteristic, number, operation, constituent element, component, or combination thereof, but not to exclude the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0149] Furthermore, in this application, the expression "and / or" includes any and all combinations of the associated listed words. For example, the expression "A and / or B" may include A, may include B, or may include both A and B.

[0150] In this application, expressions including ordinal numbers such as "first" and "second" may modify the elements. However, such elements are not limited by the foregoing expressions. For example, the foregoing expressions do not limit the order and / or importance of the elements. The foregoing expressions are only used to distinguish one element from other elements. For example, "first user equipment" and "second user equipment" refer to different user equipment, although both "first user equipment" and "second user equipment" are user equipment. Similarly, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0151] When a component is referred to as "connected" or "accessed" to other components, it should be understood that this component not only connects directly to or accesses other components, but also that another component may exist between this component and other components. On the other hand, when a component is referred to as "directly connected" or "directly accessed" to other components, it should be understood that no component exists between them.

[0152] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An antenna assembly, characterized in that, It includes a circuit board, a main radiator, a parasitic radiator, and a switching circuit; the main radiator is connected to the power supply circuit of the circuit board, the parasitic radiator is connected to the switching circuit, the switching circuit is used to enable the main radiator to supply power to the parasitic radiator when in the on state, and the switching circuit is used to enable the main radiator to not supply power to the parasitic radiator when in the off state.

2. The antenna assembly as claimed in claim 1, characterized in that, The parasitic radiator and the main radiator are spaced apart. The main radiator is coupled to power the parasitic radiator. The switching circuit is connected between ground and the parasitic radiator. The main radiator is grounded.

3. The antenna assembly as described in claim 2, characterized in that, The switching circuit is connected between the grounding point of the circuit board and the parasitic radiator.

4. The antenna assembly as claimed in claim 1, characterized in that, The switching circuit is electrically connected between the parasitic radiator and the main radiator.

5. The antenna assembly as described in claim 4, characterized in that, The parasitic radiator is not grounded.

6. The antenna assembly as described in any one of claims 1-5, characterized in that, The parasitic radiator has a semi-enclosed slit.

7. The antenna assembly as described in any one of claims 1-5, characterized in that, The parasitic radiator includes a first part and a second part, the first part and the second part being spaced apart, and both the first part and the second part being connected to the switching circuit.

8. The antenna assembly as described in any one of claims 1-7, characterized in that, The main radiator is arranged in a circle, and the circuit board and the parasitic radiator are located within the area surrounded by the main radiator.

9. The antenna assembly as described in any one of claims 1-8, characterized in that, The switching circuit is disposed on the circuit board.

10. The antenna assembly as claimed in claim 9, characterized in that, It also includes a conductive element that connects the parasitic radiator and the switching circuit.

11. The antenna assembly as claimed in claim 10, characterized in that, The conductive component includes conductive foam and an electrical connection portion. A first end of the conductive foam is connected to the parasitic radiator, a second end of the conductive foam is connected to the first end of the electrical connection portion, and the second end of the electrical connection portion is connected to the switching circuit.

12. The antenna assembly as claimed in claim 11, characterized in that, The circuit board has a chip disposed on its first surface facing the parasitic radiator. The electrical connection portion includes a first segment extending along a first direction and a second segment extending along a second direction. The first direction is parallel to the first surface, and the second direction is not parallel to the first surface. The first segment is insulated from the chip. The conductive foam is connected between the first segment and the parasitic radiator. The second segment is connected between the first segment and the switching circuit.

13. A main body of an electronic device, characterized in that, The electronic device body includes an antenna assembly as described in any one of claims 1-11.

14. The electronic device body as claimed in claim 13, characterized in that, It also includes a middle frame, which is arranged in a circle, and the main radiator is formed on the middle frame.

15. The electronic device body as claimed in claim 14, characterized in that, It also includes a screen and a back cover connected to the mid-frame, the screen, the back cover and the mid-frame forming a receiving space, the circuit board being disposed in the receiving space, and the parasitic radiator being disposed on the surface of the screen facing the receiving space.

16. The electronic device body as claimed in claim 14, characterized in that, It also includes a screen and a back cover connected to the mid-frame, the screen, the back cover and the mid-frame forming a receiving space, the circuit board being disposed in the receiving space, and the parasitic radiator being disposed on the surface of the back cover facing the receiving space.

17. The electronic device body as claimed in claim 13, characterized in that, It also includes a battery disposed between the circuit board and the parasitic radiator, the parasitic radiator being connected to the grounding point of the battery via a switching circuit.

18. An electronic device, characterized in that, The electronic device includes the electronic device body as described in any one of claims 12-17.

19. The electronic device as claimed in claim 18, characterized in that, The electronic device is a wearable device.

20. A control method for an electronic device, characterized in that, The electronic device includes an antenna assembly, which includes a circuit board, a main radiator, a parasitic radiator, and a switching circuit. The main radiator is connected to a feed circuit on the circuit board, and the parasitic radiator is connected to the switching circuit. The switching circuit is used to enable the main radiator to feed the parasitic radiator when the circuit is on, and to prevent the main radiator from feeding the parasitic radiator when the circuit is off. The control method includes: When preset conditions are met, the main radiator controls the main radiator to supply power to the parasitic radiator through the switching circuit; When the preset conditions are not met, the main radiator is controlled by the switching circuit to prevent it from supplying power to the parasitic radiator.

21. The control method as described in claim 20, characterized in that, The preset conditions include: The communication frequency registered by the electronic device is within the set frequency band; The electronic device did not establish a short-range wireless communication connection with any communication device.

22. The control method as described in claim 20, characterized in that, The parasitic radiator is spaced apart from the main radiator, the switching circuit is connected between ground and the parasitic radiator, and the main radiator is grounded; The step of controlling the main radiator to feed the parasitic radiator through the switching circuit includes: The switching circuit is controlled to be in the conducting state, so that the main radiator and the parasitic radiator are coupled and fed together; The step of controlling the main radiator not to supply power to the parasitic radiator via the switching circuit includes: The switching circuit is controlled to be in the off state so that the main radiator does not supply power to the parasitic radiator.

23. The control method as described in claim 20, characterized in that, The switching circuit is electrically connected between the parasitic radiator and the main radiator; The step of controlling the main radiator to feed the parasitic radiator through the switching circuit includes: The switching circuit is controlled to be in the ON state, so that the parasitic radiator is connected in series with the main radiator; The step of controlling the main radiator not to supply power to the parasitic radiator via the switching circuit includes: The switching circuit is controlled to be in the off state so that the main radiator does not supply power to the parasitic radiator.

24. An electronic device, characterized in that, The electronic device includes a processor and a memory, the memory being used to store computer instructions, and the processor being used to invoke the computer instructions to perform the method as described in any one of claims 20-23.

25. A storage medium, characterized in that, The storage medium stores computer instructions that, when executed by a processor, implement the method as described in any one of claims 20-23.

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