Mainboard assembly and electronic equipment

Abstract

The embodiment of the invention provides a mainboard assembly and electronic equipment, and aims to solve the problem that the efficiency of an antenna is low, in the electronic equipment, a middle frame is at least partially arranged between a battery and a first radiator, the middle frame is provided with a window, the first radiator covers at least part of the window, clearance is provided for a first antenna through the arranged window, and the efficiency of the antenna is improved. Or the partial thickness of the middle frame provides the clearance of the first antenna, so that the gain of the first antenna is improved.

Description

[0001] This application is a divisional application. The application number of the original application is 202411664833.8, and the original application date is November 18, 2024. The entire content of the original application is incorporated into this application by reference. Technical Field

[0002] The embodiments of the present application relate to the field of communication technology, and specifically to a motherboard assembly and an electronic device. Background Art

[0003] Electronic devices (such as mobile phones and tablets) generally have antennas, which are installed inside the electronic device. The antenna's radiator is spaced apart from the ground structure (such as the battery, middle frame, etc.) in the electronic device. However, the thickness of the electronic device is limited, and the distance between the radiator and the ground structure is small, resulting in low antenna efficiency. Summary of the Invention

[0004] The embodiments of the present application provide a mainboard assembly and an electronic device, which can improve the efficiency of the antenna.

[0005] In a first aspect, an embodiment of the present application provides an electronic device, comprising: a battery, a middle frame, a housing, and a first antenna, wherein the battery, the middle frame, and the first antenna are arranged in the housing, at least a portion of the middle frame is arranged between the battery and the first radiator of the first antenna, a window is provided on the middle frame extending therethrough, the first radiator covers at least a portion of the window, and the first radiator is located between the window and the insulating portion of the housing.

[0006] Through the above arrangement, the middle frame is at least partially arranged between the battery and the first radiator, a window is provided on the middle frame, and the first radiator covers at least part of the window. The window is provided to provide clearance for the first antenna, or part of the thickness of the middle frame provides clearance for the first antenna, thereby improving the gain of the first antenna.

[0007] In some embodiments that may include the above embodiments, the electronic device also includes a mainboard, the middle frame includes a first surface and a second surface arranged opposite to each other, a first groove is provided on the first surface, the mainboard is arranged in the first groove, a second groove is provided on the second surface, the battery is arranged in the second groove, the projections of the first groove and the second groove on the middle frame are spaced apart, the mainboard has a feed source, and the feed source is coupled to the first radiator.

[0008] With this arrangement, the mainboard is positioned within the first recess of the middle frame, the battery is positioned within the second recess of the middle frame, and the first radiator coupled to the mainboard feed source at least partially covers the window in the middle frame. This utilizes the thickness of the middle frame to provide clearance for the antenna, eliminating the need to elevate the antenna radiator within the housing to achieve clearance. This can reduce the thickness of the electronic device. In some embodiments that may include the above embodiments, a portion of the first radiator is located on a side of the mainboard facing away from the middle frame. A feed element is provided on the mainboard, and the feed source is coupled to the first radiator via the feed element. This arrangement enables power feeding to the first radiator without requiring a complex feeding structure. Exemplarily, the feed element may include a spring, capacitor, or other structure to couple power to the first radiator via the feed element. In implementations where an antenna bracket is provided on the mainboard, the antenna bracket is an insulating bracket that secures the first radiator to the mainboard. Accordingly, the feed element may include a conductive member (such as a conductive trace or a conductive plate) disposed on the antenna bracket to couple power to the first radiator via the feed element.

[0009] In some embodiments, including the above embodiments, the first radiator extends along the surface of the mainboard, with a portion of the first radiator extending outside the mainboard to cover the window in the middle frame. It is understood that when the mainboard assembly is not mounted on the middle frame, the first radiator may be at an angle to the mainboard or substantially parallel to the mainboard. After the mainboard assembly is mounted on the middle frame, the first radiator is substantially parallel to the mainboard to cover the window. The portion of the first radiator extending outside the mainboard can be understood as meaning that the projection of the portion of the first radiator on the display panel extends beyond the projection of the mainboard on the display panel.

[0010] In some embodiments that may include the above embodiments, a dielectric layer is filled within the window. This arrangement supports the first radiator corresponding to the window, thereby preventing deformation of the first radiator. In one embodiment, the dielectric layer can also be used to adjust the dielectric constant within the window, thereby adjusting the performance of the first antenna.

[0011] In some embodiments that may include the above embodiments, a slit is provided on the first radiator, which divides the first radiator along its width. This configuration allows the electrical length of the first radiator to be adjusted, thereby adjusting the communication frequency band covered by the first antenna; or, within the same communication frequency band, the radiation aperture of the first antenna is expanded, thereby improving the radiation efficiency of the first antenna.

[0012] In some embodiments that may include the above-mentioned embodiments, multiple slits are provided, spaced apart along the length of the first radiator. This arrangement further adjusts the electrical length of the first radiator. For a given electrical length, providing more slits can increase the aperture of the first antenna and improve its radiation efficiency. Furthermore, properly positioning the slits can avoid other structures within the electronic device, preventing the first radiator from interfering with their placement and operation, thereby increasing the flexibility of antenna design.

[0013] In some embodiments that may include the above embodiments, the middle frame further includes connecting ribs disposed within the window. The window may reduce the structural strength of the middle frame. The provision of the connecting ribs can improve the structural strength of the middle frame, thereby preventing deformation of the middle frame. It is understood that the connecting ribs disposed within the window can separate the window into a first window and a second window. The first window and the second window can be arranged substantially along the length of the first radiator.

[0014] In some embodiments that may include the above embodiments, both ends of the radiator along the length direction are open ends, and along the length direction, the distance between the connecting rib and the midpoint of the radiator is less than or equal to one quarter of the length dimension of the radiator.

[0015] Such a setting allows the connecting rib to correspond to the middle part of the first radiator, and the middle part of the first radiator is generally the point where the current is larger, that is, the current in the middle is larger. Setting the connecting rib here can reduce the impact of the connecting rib on the first radiator, thereby ensuring that the first antenna has a higher efficiency.

[0016] In some embodiments that may include the above embodiments, the electronic device further includes a frame, which is arranged around the outer periphery of the middle frame; the frame includes adjacent first and second frames, the first frame is arranged perpendicular to the second frame, and the length of the first frame is less than the length of the second frame; the motherboard and the battery are arranged along the length direction of the second frame. Since the first radiator is located at the junction of the motherboard and the battery, the first radiator can be located in the middle area of ​​the length direction of the electronic device (parallel to the direction of the second frame). With this arrangement, when the electronic device is placed horizontally, the user's hand is not likely to block the first radiator, so as not to affect the performance of the first antenna (such as the gain of the first antenna).

[0017] It's understandable that the horizontal position scenario involves users playing games or watching videos on their phones. In this scenario, the second side frame is roughly parallel to the horizontal plane, and users typically hold the first side frame and the area near it, i.e., the user holds the electronic device at both ends along its length. The first radiator is located at the junction of the motherboard and battery, which prevents it from being blocked in the horizontal position.

[0018] In some embodiments that may include the above embodiments, the electronic device further includes a small board, which is disposed within the accommodating space and on the middle frame. The main board, battery, and small board are arranged along the length of the second frame, with the battery located between the main board and the small board. With this arrangement, the first radiator can still be located in the middle region of the electronic device along its length. When the electronic device is placed horizontally, the user's hand is unlikely to block the first radiator, thereby preventing performance of the first antenna from being affected.

[0019] In a vertical screen usage scenario (such as making and receiving calls, browsing the web, sending and receiving videos, etc.), the second frame is roughly perpendicular to the horizontal plane, the first frame can be located at the top of the electronic device, and the main board can be set close to the first frame, that is, the main board is located at the upper part of the electronic device, the small board is located at the lower part of the electronic device, and the first radiator is located at the junction of the main board and the battery, so that the first radiator is located in the upper half of the electronic device; in a vertical screen usage scenario, the user's hand generally holds the lower half of the electronic device, and the user's hand will not hold outside the first radiator, thereby avoiding the user's hand affecting the performance of the first antenna.

[0020] In some embodiments that may include the above embodiments, the small board may include a printed circuit board, and devices such as speakers and microphones may be provided on the small board. The small board is electrically connected to the main board to operate under the control of the processor.

[0021] In some embodiments that may include the above embodiments, the small board and the main board may be located on the same side of the middle frame. Accordingly, a third groove is provided on the first surface of the middle frame, and the small board is disposed within the third groove to facilitate installation and maintenance of the main board and the small board. Of course, the small board and the battery may also be located on the same side of the middle frame. Accordingly, the third groove may be provided on the second surface of the main board, and the small board is disposed within the third groove.

[0022] In some embodiments that may include the above embodiments, the electronic device further includes a second antenna and a switching device, wherein the second radiator of the second antenna is disposed on the first frame, the switching device is coupled to both the first radiator and the second radiator, and the switching device is configured to switch the operating state of the first antenna and / or the second antenna. For example, the switching device can be used to enable the first antenna to be in an operating state and the second antenna to be in a power-off state (non-operating state), in which case the first antenna is used to transmit and receive signals; the switching device can also be used to enable the first antenna to be in a power-off state and the second antenna to be in an operating state, in which case the second antenna is used to transmit and receive signals.

[0023] Exemplarily, the communication frequency bands of the first antenna and the second antenna can be at least partially the same, and they can transmit and receive the same signals; for example, the first antenna and the second antenna can both be used to transmit and receive cellular signals or WIFI signals. The embodiments of the present application do not limit the signals transmitted and received by the first antenna and the second antenna.

[0024] Through the above-mentioned setting, the switch device can be used to select the one with better performance between the first antenna and the second antenna for receiving and transmitting signals to ensure the communication quality of the electronic device. It can be understood that in the horizontal screen usage scenario, since the user will hold the electronic device near the first frame, the user's hand will block the second radiator, thereby affecting the receiving and transmitting signals of the second radiator; at this time, the first antenna can be controlled to be in a working state and the second antenna can be controlled to be in a power-off state through the switch device, and the first radiator can be sent and received to ensure better communication quality. In the vertical screen usage scenario, the first frame is generally facing the zenith direction. At this time, the first radiator can be controlled to be in a power-off state and the second radiator can be controlled to be in a working state through the switch device, so as to send and receive signals through the second radiator to ensure better communication quality. That is, in each application scenario, it can be ensured that the electronic device has good communication quality.

[0025] In some embodiments that may include the above embodiments, the electronic device further includes a second antenna, wherein a second radiator of the second antenna is disposed on a second side frame, and the first antenna and the second antenna have the same communication frequency band. The first antenna and the second antenna can independently transmit and receive signals to form a Multiple-Input Multiple-Output (MIMO) system, thereby improving communication performance.

[0026] In some embodiments that may include the above embodiments, a minimum distance between the first radiator and the second radiator is less than or equal to 10 mm to ensure a compact structure.

[0027] In some embodiments that may include the above embodiments, there is a partial middle frame between the first radiator and the second radiator, and the middle frame is generally grounded. The partial middle frame can improve the isolation between the first radiator and the second radiator to ensure the antenna radiation efficiency of each of the first antenna and the second antenna.

[0028] In some embodiments that may include the above embodiments, the first radiator is configured to generate a first resonance and a second resonance, where the resonant frequency of the first resonance is lower than the resonant frequency of the second resonance. This configuration allows the first radiator to generate two resonances, thereby increasing the bandwidth of the first antenna and thereby improving the performance of the first antenna. For example, the first resonance and the second resonance may cover the same communication frequency band, or the first resonance and the second resonance may cover different communication frequency bands, although this is not a limitation in the present embodiment.

[0029] In some embodiments that may include the above embodiments, at the first resonance, the current on the first radiator is a unidirectional current. Accordingly, the system efficiency and radiation efficiency of the first antenna are both high, and the radiation pattern radiates primarily from the back cover away from the display panel, with the radiation pattern being roughly hemispherical. At the second resonance, the current on the first radiator on both sides of the slit is a reverse current. At this time, the first antenna still has a certain system efficiency and radiation efficiency, and the radiation pattern is in a lobe shape on the side of the back cover away from the display panel (the main lobe and side lobe of the radiation pattern are spaced apart along the length of the electronic device), radiating in a direction away from the display panel. It can be seen that both the first resonance and the second resonance can meet communication requirements, allowing the first antenna to have a large bandwidth.

[0030] In some embodiments that may include the above-mentioned embodiments, the first radiator includes a first sub-radiator and a second sub-radiator, the first sub-radiator and the second sub-radiator both cover a portion of the window, the first sub-radiator and the second sub-radiator are spaced apart in a direction parallel to the middle frame, a first feeding point is provided on the first sub-radiator, and the first sub-radiator is used to couple and feed power to the second sub-radiator.

[0031] Such a setting can increase the area of ​​the first radiator, thereby forming more resonant modes (such as forming a third resonance, the resonant frequency of the third resonance can be greater than the resonant frequency of the second resonance; or the resonant frequency of the third resonance is less than the resonant frequency of the first resonance), which can further increase the bandwidth of the first antenna.

[0032] In some embodiments that may include the above-mentioned embodiments, the first radiator includes a first sub-radiator and a second sub-radiator, the first sub-radiator and the second sub-radiator both cover a portion of the open window, the first sub-radiator and the second sub-radiator are spaced apart in a direction parallel to the middle frame, a first feeding point is provided on the first sub-radiator, and a second feeding point is provided on the second sub-radiator, the first sub-radiator is used to generate a first resonance, and the second sub-radiator is used to generate a second resonance, and the resonant frequency of the first resonance is staggered from the resonant frequency of the second resonance.

[0033] With such an arrangement, different resonances can be formed through different feeding points, thereby increasing the bandwidth of the first antenna or covering different communication frequency bands.

[0034] In some embodiments that may include the above embodiments, the housing includes a display panel and a back cover, the display panel and the back cover being disposed on either side of the middle frame, the mainboard and the first radiator being located between the middle frame and the back cover, and the battery being located between the middle frame and the display panel. With this arrangement, the mainboard can be disassembled and repaired by removing the back cover, facilitating disassembly and repair of the mainboard.

[0035] In some embodiments that may include the above embodiments, the housing includes a display panel and a back cover, the display panel and the back cover being disposed on either side of the middle frame, the first radiator being located between the middle frame and the back cover, and the battery and the main board being located between the middle frame and the display panel. With this arrangement, the battery and main board can be removed and installed for repair by removing the back cover, thereby facilitating the removal and repair of the battery and main board.

[0036] In some embodiments that may include the above embodiments, the housing includes a display panel and a back cover, the display panel, the display panel, and the back cover are all disposed on the middle frame, the first radiator is located between the display panel and the middle frame, and the battery is located between the middle frame and the back cover. With this arrangement, the battery can be removed and repaired by removing the back cover, thereby facilitating the removal and repair of the battery.

[0037] In the second aspect, an embodiment of the present application also provides a mainboard assembly, including: a mainboard and a first antenna, a feeding element is provided on the mainboard, one end of the first radiator of the first antenna is coupled to the feeding element, and the feeding element is used to couple and feed power to the first radiator; the first radiator extends along the surface of the mainboard, and part of the first radiator extends outside the mainboard.

[0038] This arrangement can reduce the interference of components on the mainboard on the first radiator and improve communication quality.

[0039] In some embodiments that may include the above embodiments, the portion of the first radiator extending outside the mainboard is used to cover the window of the middle frame of the electronic device.

[0040] Through the above arrangement, the middle frame is arranged between the battery and the first radiator, a window is provided on the middle frame, and the first radiator covers at least part of the window. The window is provided to provide clearance for the first antenna, or part of the thickness of the middle frame provides clearance for the first antenna, thereby improving the gain of the first antenna.

[0041] In some embodiments that may include the above embodiments, a slit is provided on the first radiator, which divides the first radiator along its width. This configuration allows the electrical length of the first radiator to be adjusted, thereby adjusting the communication frequency band covered by the first antenna; or, within the same communication frequency band, the radiation aperture of the first antenna is expanded, thereby improving the radiation efficiency of the first antenna.

[0042] In some embodiments that may include the above-mentioned embodiments, multiple slits are provided, spaced apart along the length of the first radiator. This arrangement further adjusts the electrical length of the first radiator. For a given electrical length, providing a greater number of slits can reduce the length of the first radiator, facilitating miniaturization. Furthermore, providing multiple slits can increase the aperture of the first antenna and improve its radiation efficiency. Furthermore, properly positioning the slits can avoid other structures within the electronic device, preventing the first radiator from affecting their configuration and operation.

[0043] In some embodiments that may include the above embodiments, the motherboard assembly further includes a flexible substrate, the first radiator is disposed on the flexible substrate, and one end of the flexible substrate is connected to the motherboard. This arrangement enables support for the first radiator via the flexible substrate. It will be appreciated that the first radiator is relatively thin, and the flexible substrate can support the first radiator, thereby preventing damage or deformation to the first radiator during installation and movement of the motherboard assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 An exploded view of an electronic device provided in an embodiment of the present application;

[0045] Figure 2 An exploded view of the mainboard assembly and the middle frame of the electronic device provided in an embodiment of the present application;

[0046] Figure 3 A schematic diagram of the structure of the motherboard assembly provided in an embodiment of the present application;

[0047] Figure 4 Cross-sectional view of the electronic device provided in the embodiment of the present application Figure 1 ;

[0048] Figure 5 A schematic diagram of an electronic device in a vertical screen usage scenario provided by an embodiment of the present application;

[0049] Figure 6 A schematic diagram of the assembly of a first radiator in an electronic device provided in an embodiment of the present application;

[0050] Figure 7 Cross-sectional view of the electronic device provided in the embodiment of the present application Figure 2 ;

[0051] Figure 8 A schematic diagram of an electronic device in a horizontal position according to an embodiment of the present application;

[0052] Figure 9 A schematic diagram of a structure in which a dielectric layer is provided in an electronic device according to an embodiment of the present application;

[0053] Figure 10 for Figure 9 Return loss graph of the first antenna shown;

[0054] Figure 11 A schematic diagram of a structure in which a plurality of fractures are provided on a first radiator in an electronic device provided in an embodiment of the present application;

[0055] Figure 12 for Figure 11 Return loss graph of the first antenna shown;

[0056] Figure 13 A schematic diagram of the structure of the electronic device provided in the embodiment of the present application with connecting ribs;

[0057] Figure 14 for Figure 13 The return loss curve of the first antenna is shown;

[0058] Figure 15 Schematic diagram of the structure of the second radiator provided in the electronic device provided in the embodiment of the present application Figure 1 ;

[0059] Figure 16 Schematic diagram of the structure of the second radiator provided in the electronic device provided in the embodiment of the present application Figure 2 ;

[0060] Figure 17 for Figure 16 S-curve graphs of the first antenna and the second antenna shown;

[0061] Figure 18 Schematic diagram of the structure of the first radiator in the electronic device provided in the embodiment of the present application Figure 1 ;

[0062] Figure 19 Schematic diagram of the structure of the first radiator in the electronic device provided in the embodiment of the present application Figure 2 .

[0063] Explanation of the reference numerals: 10: middle frame; 11: window; 12: first groove; 13: second groove; 14: third groove; 15: dielectric layer; 16: connecting rib; 17: positioning column; 20: mainboard assembly; 21: mainboard; 22: first radiator; 23: fracture; 24: switching device; 25: antenna bracket; 30: battery; 40: display panel; 50: back cover; 60: small board; 100: electronic device; 101: mainboard assembly; 102: first surface; 103: second surface; 110: frame; 111: first frame; 112: second frame; 113: second radiator 221: first sub-radiator; 222: second sub-radiator. DETAILED DESCRIPTION

[0064] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0065] In the following, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features.

[0066] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0067] The following explains the terms that may appear in the embodiments of the present application.

[0068] Connect / connected: should be understood in a broad sense. For example, "connection" can be a fixed connection, an electrical connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0069] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupling connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the form in which different components in the circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gap between two conductive parts.

[0070] Opposite / oppositely arranged: A and B being oppositely arranged may mean that A and B are arranged face-to-face. For example, when two radiators are oppositely arranged, at least a portion of the two radiators overlap along a certain direction. In one embodiment, the two oppositely arranged radiators are adjacent to each other, with no other radiators or conductive objects other than antenna structures positioned between them.

[0071] Lumped component / device: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For a signal, the component's characteristics remain constant at all times, regardless of frequency.

[0072] Distributed components / devices: Unlike lumped components, if the size of the component is similar to or larger than the wavelength relative to the circuit operating frequency, then when the signal passes through the component, the characteristics of each point of the component itself will vary due to changes in the signal. At this time, the component as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed component.

[0073] Capacitor / capacitor structure: This can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitors; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0074] Inductor / Inductor Structure: This can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive material, such as the equivalent inductance formed by the curling or rotation of the conductor.

[0075] Radiator, or antenna branch: is a device in the antenna used to receive / send electromagnetic wave radiation. In some cases, "antenna" is understood in a narrow sense as a radiator, which converts the guided wave energy from the transmitter into radio waves, or converts radio waves into guided wave energy, which is used to radiate and receive radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, and is converted by the radiator into a certain polarized electromagnetic wave energy and radiated in the desired direction. The receiving radiator converts the electromagnetic wave energy of a certain polarization from a specific direction in space into modulated high-frequency current energy and transmits it to the receiver input via the feeder line.

[0076] The radiator (or antenna branch) may include a conductor with a specific shape and size, such as a linear or sheet-like shape, etc. The present application does not limit the specific shape. In one embodiment, the linear radiator can be simply referred to as a linear antenna. In one embodiment, the linear radiator can be implemented by a conductive frame, and can also be called a frame antenna. In one embodiment, the linear radiator can be implemented by a bracket conductor, and can also be called a bracket antenna. In one embodiment, the linear radiator, or the radiator of the linear antenna, has a wire diameter (for example, including thickness and width) much smaller than the wavelength (for example, the wavelength of the medium) (for example, less than 1 / 16 of the wavelength), and the length can be comparable to the wavelength (for example, the wavelength of the medium) (for example, the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave oscillator antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna typically includes two radiating branches, and each branch is fed by a feeding portion from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted-F antenna because its side view is an inverted-F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted-F antenna (also known as a PIFA, Planar Inverted F Antenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes circular, rectangular, annular, etc., and the present application does not limit the specific shape. The structure of a microstrip antenna generally consists of a dielectric substrate, a radiator, and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0077] The radiator (or antenna branch) may also include a slot or slot formed in a conductor, for example, a closed or semi-closed slot or slot formed in a grounded conductor surface. In one embodiment, a slotted or slotted radiator may be referred to as a slot antenna or slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slot of the slot antenna / slot antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is approximately 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slot may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slot (e.g., a closed slot or slot with an additional opening) may be referred to as an open slot antenna. In some embodiments, the slot is elongated. In some embodiments, the slot is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the slot is approximately an integer multiple of the wavelength (e.g., one wavelength). In some embodiments, the slot can be fed with a transmission line spanning one or both sides, thereby exciting a radio frequency electromagnetic field in the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a conductive frame with both ends grounded, also known as a frame antenna. In this embodiment, the slot antenna or slot antenna can be considered to include a linear radiator spaced from the floor and grounded at both ends, thereby forming a closed or semi-enclosed slot or slot. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a bracket conductor with both ends grounded, also known as a bracket antenna.

[0078] The feed circuit / feed structure is the combination of all antenna components used for receiving and transmitting radio frequency waves. In the case of a receiving antenna, the feed circuit can be considered the portion of the antenna from the first amplifier to the front-end transmitter. In a transmitting antenna, the feed circuit can be considered the section after the final power amplifier. In some cases, the "feed circuit" is narrowly defined to include the RF chip, or the transmission path from the RF chip to the radiator or feed point on the transmission line. The feed circuit has the function of converting radio waves into electrical signals and transmitting them to the receiver component. Generally, it is considered the part of the antenna responsible for converting radio waves into electrical signals and vice versa. Antenna design should consider maximum power transfer potential and efficiency. To achieve this, the antenna feed impedance must be matched to the load resistor. The antenna feed impedance is a combination of resistance, capacitance, and inductance. To ensure maximum power transfer, the two impedances (load resistor and feed impedance) must be matched. This matching can be achieved by considering the frequency requirements and antenna design parameters such as gain, directivity, and radiation efficiency.

[0079] The term "ground / floor" may generally refer to at least a portion of any grounding layer, grounding plate, or grounding metal layer within an electronic device (such as a mobile phone), or at least a portion of any combination of any of the above grounding layers, grounding plates, or grounding components. The "ground / floor" may be used for grounding components within the electronic device. In one embodiment, the "ground / floor" may include any one or more of the following: the grounding layer of the electronic device's circuit board, the grounding plate formed by the electronic device's midframe, the grounding metal layer formed by the metal film below the screen, the conductive grounding layer of the battery, and conductive or metal parts electrically connected to the above grounding layer / grounding plate / metal layer. In one embodiment, the circuit board may be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12-to-14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as fiberglass, polymer, or the like. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a trace layer, and the trace layer and the grounding layer are electrically connected via vias. In one embodiment, components such as the display 120, touch screen, input buttons, transmitter, processor, memory, battery, charging circuit, and system-on-chip (SoC) structures can be mounted on or connected to a circuit board, or electrically connected to a trace layer and / or ground layer in the circuit board. For example, a radio frequency source can be located on a trace layer.

[0080] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of a conductive material. In one embodiment, the conductive material can be any of the following: copper, aluminum, stainless steel, brass, and alloys thereof, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, a graphite-coated substrate, a copper-plated substrate, a brass-plated substrate, and an aluminum-plated substrate. Those skilled in the art will appreciate that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0081] Grounding refers to coupling to the ground / floor in any manner. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding at a specific location on the frame using a portion of the midframe's structural components (or referred to as a physical ground). In one embodiment, grounding can be achieved through device grounding, such as through a series or parallel connection of a capacitor, inductor, or resistor (or referred to as a device ground).

[0082] Resonant frequency: Also called the resonance frequency, the resonant frequency can have a frequency range, i.e., the frequency range in which resonance occurs. The resonant frequency can be the frequency range in which the return loss characteristic is less than -6dB. The frequency corresponding to the strongest resonance point is the center frequency. The return loss characteristic at the center frequency can be less than -20dB.

[0083] Resonant frequency band: The range of the resonant frequency is the resonant frequency band. The return loss characteristic of any frequency point in the resonant frequency band can be less than -6dB or -5dB.

[0084] Communication frequency band / working frequency band: Regardless of the type of antenna, it always operates within a certain frequency range (band width). For example, an antenna that supports the B40 frequency band has an operating frequency band that includes frequencies in the range of 2300MHz to 2400MHz, or in other words, the antenna's operating frequency band includes the B40 frequency band. The frequency range that meets the index requirements can be regarded as the antenna's operating frequency band. The width of the operating frequency band is called the operating bandwidth. The operating bandwidth of an omnidirectional antenna may reach 3-5% of the center frequency. The operating bandwidth of a directional antenna may reach 5-10% of the center frequency. The bandwidth can be considered as a frequency range on both sides of the center frequency (for example, the resonant frequency of a dipole), where the antenna characteristics are within the acceptable value range of the center frequency.

[0085] The resonant frequency band and the operating frequency band may be the same, or may partially overlap. In one embodiment, one or more resonant frequency bands of the antenna may overlap one or more operating frequency bands of the antenna.

[0086] Electrical length: Electrical length can be expressed as the ratio of the physical length (i.e., mechanical length or geometric length) multiplied by the transmission time of an electrical or electromagnetic signal in a medium to the time required for the signal to travel the same distance as the physical length of the medium in free space. The electrical length can satisfy the following formula:

[0087]

[0088] Where L is the physical length, a is the propagation time of the electrical or electromagnetic signal in the medium, and b is the propagation time in free space.

[0089] Alternatively, electrical length can also refer to the ratio of physical length (i.e., mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0090]

[0091] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0092] In some embodiments of the present application, the physical length of the radiator may be understood as being within ±20%, or within ±10%, or within ±5% of the electrical length of the radiator.

[0093] Wavelength: Or operating wavelength, this can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, if the center frequency of the B1 uplink frequency band (resonant frequency 1920MHz to 1980MHz) is 1955MHz, the operating wavelength can be the wavelength calculated using 1955MHz. "Operating wavelength" is not limited to the center frequency; it can also refer to the wavelength corresponding to a non-center frequency of the resonant frequency or operating frequency band.

[0094] It should be understood that the wavelength of the radiation signal in air can be calculated as follows: (wavelength in air, or wavelength in vacuum) = speed of light / frequency, where frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3×10 8 m / s. The wavelength of the radiation signal in the medium can be calculated as follows: Wherein, ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application generally refers to the dielectric wavelength, which can be the dielectric wavelength corresponding to the center frequency of the resonant frequency, or the dielectric wavelength corresponding to the center frequency of the working frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, the wavelength can be the dielectric wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "dielectric wavelength" can also refer to the dielectric wavelength corresponding to the non-center frequency of the resonant frequency or the working frequency band. For ease of understanding, the dielectric wavelength mentioned in the embodiments of the present application can be simply calculated by the relative dielectric constant of the medium filled on one or more sides of the radiator.

[0095] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of an antenna radiator should not be narrowly understood as an end point or end portion that is physically disconnected from other radiators. It can also be considered as a point or section on a continuous radiator. In one embodiment, an "end / point" may include a connection / coupling area on an antenna radiator that is coupled to other conductive structures. For example, a feeding end / feeding point may be a coupling area on an antenna radiator that is coupled to a feeding structure or feeding circuit (for example, an area facing a portion of the feeding circuit). For another example, a grounding end / grounding point may be a connection / coupling area on an antenna radiator that is coupled to a grounding structure or grounding circuit.

[0096] Open end, closed end: In some embodiments, the open end and the closed end are, for example, relative to whether they are grounded. The closed end is grounded, and the open end is not grounded. In some embodiments, the open end and the closed end are, for example, relative to other conductors. The closed end is electrically connected to other conductors, and the open end is not electrically connected to other conductors. In one embodiment, the open end can also be referred to as a floating end, a free end, an open end, or an open-circuit end. In one embodiment, the closed end can also be referred to as a grounded end or a short-circuit end. It should be understood that in some embodiments, other conductors can be coupled through the open end to transfer coupling energy (which can be understood as transferring current).

[0097] In some embodiments, the understanding of "open end" can also be viewed from the perspective of current distribution. The open end or floating end can be understood as a point with low current on the radiator, or as a point with high electric field on the radiator. In one embodiment, coupling electronic devices (for example, capacitors, inductors, etc.) through the open end can maintain the current distribution characteristics of the low current point / high electric field point.

[0098] It should be understood that coupling the radiator end at a gap (from the perspective of the radiator structure, it is similar to the radiator at the opening of the open end or the suspended end) with electronic devices (for example, capacitors, inductors, etc.) can make the radiator end a point with larger current / smaller electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0099] The limitations on position and distance such as the middle or middle position mentioned in the embodiments of the present application all represent a certain range. For example, the middle (position) of the conductor can be a conductor portion including the midpoint on the conductor, or a conductor portion of one-eighth of the wavelength including the midpoint of the conductor, wherein the wavelength can be the wavelength corresponding to the working frequency band of the antenna, the wavelength corresponding to the center frequency of the working frequency band, or the wavelength corresponding to the resonance point. For another example, the middle (position) of the conductor can be a conductor portion on the conductor that is less than a predetermined threshold (for example, 1 mm, 2 mm, or 2.5 mm) from the midpoint. The middle position of the slot or the middle position of one side of the slot refers to the middle position of one side of the slot.

[0100] The limitations such as collinearity, coaxiality, coplanarity, symmetry (for example, axisymmetry, or center symmetry, etc.), parallelism, perpendicularity, and sameness (for example, same length, same width, etc.) mentioned in the embodiments of the present application are all for the current level of technology, rather than absolutely strict definitions in a mathematical sense. There may be a deviation of less than a predetermined threshold (for example, 1mm, 0.5m, or 0.1mm) in the line width direction between two collinear radiating branches or the edges of two antenna units. There may be a deviation of less than a predetermined threshold in the direction perpendicular to their coplanar planes between two coplanar radiating branches or the edges of two antenna units. There may be a deviation of a predetermined angle between two antenna units that are parallel or perpendicular to each other. In one embodiment, the predetermined threshold may be less than or equal to a threshold of 1mm, for example, the predetermined threshold may be 0.5mm, or may be 0.1mm. In one embodiment, the predetermined angle may be an angle within the range of ±10°, for example, the predetermined angle deviation is ±5°.

[0101] The current unidirectional / reverse distribution mentioned in the embodiments of the present application should be understood as the direction of the main current on the conductor on the same side being unidirectional / reverse. For example, when unidirectional distributed current is excited on a conductor that is bent or annular (for example, the current path is also bent or annular), it should be understood that, for example, the main current excited on the conductors on both sides of the annular conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) is opposite in direction, but still falls within the definition of unidirectional distributed current in the present application. In one embodiment, the unidirectional current on a conductor may refer to the current on the conductor having no reversal point. In one embodiment, the reversal of current on a conductor may refer to the current on the conductor having at least one reversal point. In one embodiment, the unidirectional current on two conductors may refer to the current on both conductors having no reversal point and flowing in the same direction. In one embodiment, the reversal of current on two conductors may refer to the current on both conductors having no reversal point and flowing in opposite directions. The unidirectional / reversal of current on multiple conductors can be understood accordingly.

[0102] Antenna Gain: This is used to measure how well an antenna radiates input power. Generally, the narrower the main lobe of an antenna pattern and the smaller the side lobes, the higher the antenna gain.

[0103] System efficiency: This refers to the ratio of the power radiated by an antenna into space (i.e., the power effectively converted into electromagnetic waves) to the antenna's input power. System efficiency is the actual efficiency after considering antenna port matching. In other words, the system efficiency of an antenna is the actual efficiency (i.e., efficiency) of the antenna.

[0104] Radiation efficiency refers to the ratio of the power radiated by an antenna into space (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. Active power input to the antenna = antenna input power - power loss. Power loss primarily includes return loss and metal ohmic loss and / or dielectric loss. Both metal loss and dielectric loss affect radiation efficiency.

[0105] Those skilled in the art will understand that efficiency is generally expressed as a percentage, which has a corresponding conversion relationship with dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0106] dB: Decibel, a logarithmic scale with a base of ten. The decibel scale is used only to measure the proportional relationship between one physical quantity and another; it itself has no physical dimension. For every 10-fold increase in the ratio between two quantities, the difference between them is expressed as 10 decibels. For example: A = 100, B = 10, C = 5, and D = 1. Then, A / D = 20dB; B / D = 10dB; C / D = 7dB; and B / C = 3dB. In other words, a 10dB difference between two quantities is a 10-fold difference, a 20dB difference is a 100-fold difference, and so on. A 3dB difference is a 2-fold difference.

[0107] dBi: Often mentioned together with dBd. dBi and dBd are units of power gain. Both are relative values, but they are referenced to different parameters. The reference for dBi is an omnidirectional antenna; the reference for dBd is a dipole. It is generally believed that dBi and dBd represent the same gain, with the value expressed in dBi being 2.15 dBi greater than the value expressed in dBd. For example, for an antenna with a gain of 16 dBd, its gain, when converted to dBi, is 18.15 dBi. Generally, the decimal places are ignored and the value is 18 dBi.

[0108] Antenna return loss: This can be understood as the ratio of the signal power reflected back to the antenna port by the antenna circuit to the antenna port's transmitted power. The smaller the reflected signal, the larger the signal radiated from the antenna into space, and the greater the antenna's radiation efficiency. The larger the reflected signal, the smaller the signal radiated from the antenna into space, and the lower the antenna's radiation efficiency.

[0109] Antenna return loss can be expressed using the S11 parameter, a type of S parameter. S11 represents the reflection coefficient and can characterize the antenna's transmission efficiency.

[0110] In one embodiment, the S11 diagram can be understood as a schematic diagram for representing the resonance generated by the antenna. In one embodiment, the portion of the resonance shown in the S11 diagram that is less than -6dB can be understood as the resonant frequency / frequency range / operating frequency band generated by the antenna. The S11 parameter is usually a negative number. The smaller the S11 parameter, the smaller the antenna return loss and the less energy reflected back by the antenna itself, which means that more energy actually enters the antenna and the higher the antenna system efficiency. The larger the S11 parameter, the greater the antenna return loss and the lower the antenna system efficiency.

[0111] It should be noted that in engineering, an S11 value of -6dB is generally used as a standard. When the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or the antenna can be considered to have good transmission efficiency.

[0112] The present application embodiment provides an electronic device, which may include a mobile phone, a tablet computer, a laptop computer, a smart watch, etc. Figure 1 The electronic device 100 includes a frame 110, a middle frame 10, and a housing. The housing may include a display panel 40 and a back cover 50. The frame 110 encloses a housing space, and the middle frame 10 is disposed within the housing space. The display panel 40 covers one side (the upper portion) of the frame 110, and the back cover 50 covers the other side (the lower portion) of the frame 110 to enclose the housing space. For example, the frame 110 may be substantially rectangular and include a first frame 111 and a second frame 112. The length of the first frame 111 may be less than the length of the second frame 112.

[0113] The electronic device 100 further includes a motherboard assembly 20, which is disposed in the accommodation space and can be disposed on the middle frame 10 to achieve fixation of the motherboard assembly 20. Figure 2 The motherboard assembly 20 includes a motherboard 21 and a first antenna. The motherboard 21 may include a circuit board, as well as components such as a processor, memory, and radio frequency chip disposed on the circuit board. The first antenna includes a first radiator 22. A feed source is disposed on the motherboard 21. The feed source may include a radio frequency chip. The feed source is coupled to the first radiator 22, allowing the first antenna to transmit and / or receive signals. The first antenna may also include a feed circuit. The feed circuit may include a capacitor and / or an inductor. The radio frequency chip may be coupled to the feed source via the feed circuit to feed a signal to the first radiator 22. For example, the feed circuit may be disposed on the motherboard 21.

[0114] Please refer to Figure 3Exemplarily, an antenna bracket 25 is provided on the mainboard 21. The antenna bracket 25 is an insulating bracket, and the first radiator 22 can be fixed on the mainboard 21 through the antenna bracket 25. A feeding element is provided on the mainboard 21, and the feed source is coupled with the first radiator 22 through the feeding element. With such a configuration, the feeding of the first radiator can be achieved without a complicated feeding structure. The feeding element may include structures such as shrapnel and capacitors to couple the feed (coupled signal) to the first radiator 22 through the feeding element. In the implementation method in which the antenna bracket 25 is provided on the mainboard 21, the feeding element may include a conductor (such as a conductive line or a conductive plate, etc.) provided on the antenna bracket 25 to couple the feed to the first radiator 22 through the feeding element.

[0115] In some implementations, a positioning column 17 is provided on the mainboard 21 , and correspondingly, a positioning hole is provided on the first radiator 22 . The positioning column 17 is passed through the positioning hole to position the first radiator 22 and improve the position accuracy of the first radiator 22 .

[0116] In some embodiments, an adhesive layer may be provided between the first radiator 22 and the mainboard 21 to further secure the first radiator 22. For example, the mainboard 21 may be provided with a recessed portion, with at least a portion of the adhesive layer disposed within the recessed portion. This allows a portion of the first radiator 22 to be adhered to the adhesive layer, allowing the first radiator 22 to adhere to the surface of the mainboard 21, thereby reducing the gap between the first radiator 22 and the mainboard and reducing the thickness of the mainboard assembly 20.

[0117] In the above embodiment, the first radiator 22 may comprise a conductive material such as a metal plate or a metal column. The present embodiment does not limit the shape of the first radiator 22. In some implementations, the motherboard assembly 20 further includes a flexible substrate, on which the first radiator 22 is disposed, one end of which is connected to the motherboard 21. This configuration provides support for the first radiator 22 via the flexible substrate. It will be appreciated that the first radiator 22 is relatively thin, and the flexible substrate can support the first radiator 22, preventing damage or deformation during installation and movement of the motherboard assembly 20.

[0118] Illustratively, the mainboard assembly 20 may include a flexible printed circuit (FPC). Accordingly, the insulating layer of the flexible printed circuit may serve as a flexible substrate, and the conductive layer of the flexible printed circuit may serve as the first radiator 22 .

[0119] Please refer to Figure 1 and Figure 4In the embodiment of the present application, the middle frame 10 can be roughly plate-shaped, the middle frame 10 can be roughly parallel to the display panel 40, the main board 21 can cover the middle frame 10, and the main board 21 can be connected to the middle frame 10 by bolt connection or clamping.

[0120] In the above implementation, the electronic device 100 further includes a battery 30, which is disposed within the accommodation space and can be connected to the middle frame 10 to secure the battery 30. At least a portion of the middle frame 10 is located between the battery 30 and the first radiator 22. This means that, along the thickness direction of the electronic device 100 (perpendicular to the display panel 40), at least a portion of the middle frame 10 is located between the battery 30 and the first radiator 22. The projections of the first radiator 22 and the middle frame 10 on the display panel 40 may partially overlap, or the projection of the first radiator 22 on the display panel 40 may be within the projection of the middle frame on the display panel 40. Alternatively, a small gap (e.g., less than or equal to 10 mm) exists between the projection of the first radiator 22 on the display panel 40 and the projection of the middle frame on the display panel 40. Similarly, the projections of the battery 30 and the middle frame 10 on the display panel 40 may partially overlap, or the projection of the battery 30 on the display panel 40 is located within the projection of the middle frame on the display panel 40, or there is a small gap between the projection of the battery 30 on the display panel 40 and the projection of the middle frame on the display panel 40 (such as the gap is less than or equal to 10 mm).

[0121] Please refer to Figure 5 and Figure 6 The middle frame 10 is provided with a window 11 that extends through the middle frame 10. The first radiator 22 extends along the surface of the mainboard 21, with a portion of the first radiator 22 extending outside the mainboard 21. Specifically, a portion of the first radiator 22 covers the mainboard 21, while the projection of another portion of the first radiator 22 on the middle frame 10 lies outside the projection of the mainboard 21 on the middle frame 10. The portion of the first radiator 22 that extends outside the mainboard 21 covers at least a portion of the window 11. It will be appreciated that the housing of the battery 30 is generally metal and grounded. Specifically, the housing of the battery 30 serves as the floor for the first antenna. The battery 30 facilitates the first radiator 22 to transmit signals outward through the window 11. This means that the area between the battery 30 and the first radiator 22 provides clearance for the first antenna.

[0122] It is understood that when the motherboard assembly 20 is not mounted on the middle frame 10, the first radiator 22 can be at a certain angle to the motherboard 21, or can be approximately parallel to the motherboard 21. After the motherboard assembly 20 is mounted on the middle frame 10, the first radiator 22 is approximately parallel to the motherboard 21, covering the window 11. The fact that a portion of the first radiator 22 extends beyond the motherboard 21 can be understood as meaning that the projection of a portion of the first radiator 22 on the display panel 40 extends beyond the projection of the motherboard 21 on the display panel 40.

[0123] For example, the projection of the first radiator 22 on the battery 30 may partially cover the projection of the window 11 on the battery 30 (the first radiator 22 partially covers the window 11); alternatively, the projection of the window 11 on the battery 30 is within the projection of the first radiator 22 on the battery 30 (the first radiator 22 completely covers the window 11). It is understood that appropriately increasing the overlapping area of ​​the projections of the first radiator 22 and the window 11 on the battery 30 (increasing the area of ​​the window 11 covered by the first radiator 22) can increase the gain of the first antenna, thereby improving communication performance.

[0124] In the embodiment of the present application, at least a portion of the middle frame 10 is arranged between the first radiator 22 and the battery 30, and the first radiator 22 covers at least a portion of the window 11, wherein the surface of the first radiator 22 facing away from the battery 30 can be flush with the surface of the middle frame 10; or, along the thickness direction of the electronic device, at least a portion of the first radiator 22 is located inside the window 11.

[0125] In the embodiment of the present application, the first radiator 22 is located between the window 11 and the insulating portion of the housing, so that the first radiator 22 can radiate signals outward through the insulating portion of the housing. The first radiator 22 is located between the window 11 and the insulating portion of the housing. This means that, along the thickness of the electronic device, the first radiator 22 is located between the window 11 and the insulating portion of the housing. For example, the projection of the insulating portion on the display panel 40 and the projection of the first radiator 22 on the display panel 40 may at least partially overlap; alternatively, a small gap may exist between the projection of the insulating portion on the display panel 40 and the projection of the first radiator 22 on the display panel 40.

[0126] In the electronic device 100 provided in an embodiment of the present application, the middle frame 10 is at least partially arranged between the battery 30 and the first radiator 22. A window 11 is provided on the middle frame 10, and the first radiator 22 covers at least a portion of the window 11. The window 11 is provided to provide clearance for the first antenna, or in other words, part of the thickness of the middle frame 10 provides clearance for the first antenna, thereby improving the gain of the first antenna.

[0127] On the other hand, since the window 11 provides clearance for the first antenna, or part of the thickness of the middle frame 10 provides clearance for the first antenna, under the condition of the same antenna performance (such as the same gain), the middle frame 10 is set between the battery 30 and the first radiator 22, which can reduce the thickness of the electronic device 100 (the dimension perpendicular to the direction of the display panel 40).

[0128] Continue to refer to Figure 4 In some implementations, the display panel 40 and back cover 50 are located on either side of the middle frame 10, the mainboard 21 and first radiator 22 are located on the same side of the middle frame 10, the first radiator 22 is located between the middle frame 10 and the back cover 50 (i.e., the mainboard 21 faces the back cover 50), and the battery 30 is located between the middle frame 10 and the display panel 40 (the battery 30 faces the display panel 40). This arrangement allows the mainboard 21 to be disassembled and repaired by removing the back cover 50, facilitating disassembly and repair of the mainboard 21.

[0129] It is understood that the material of the back cover 50 may include non-metallic materials such as ceramics and plastics to prevent the back cover 50 from blocking the signal transmission and reception of the first antenna. Of course, in the implementation method where the material of the back cover 50 includes a metal material, the back cover 50 may have a window facing the first radiator 22, and an insulating material may be provided in the window so that the first antenna can transmit and receive signals through the window. The projection of the window and the first radiator 22 on the middle frame 10 may at least partially overlap, or there may be a small gap between the window and the projection of the first radiator 22 on the middle frame 10 (e.g., the gap is less than or equal to 10 mm). In the implementation method where the material of the back cover 50 includes a metal material, the back cover 50 and the middle frame 10 may be an integral structure.

[0130] Please refer to Figure 7 In other implementations, the display panel 40 and the back cover 50 are disposed on both sides of the middle frame 10, and the motherboard 21 and the battery 30 are disposed on the same side of the middle frame 10. The motherboard 21 and the battery 30 can be disposed facing the display panel 40, and the first radiator 22 and the motherboard 21 are located on different sides of the middle frame 10, that is, the first radiator 22 is disposed facing the back cover 50. This arrangement allows the battery 30 and motherboard 21 to be disassembled, installed, and maintained by removing the back cover 50, facilitating disassembly, installation, and maintenance of the battery 30 and motherboard 21.

[0131] In other implementations, the motherboard 21 and the first radiator 22 are disposed on the same side of the middle frame 10, with the first radiator 22 located between the middle frame 10 and the display panel 40 (i.e., the motherboard 21 is disposed facing the display panel 40), and the battery 30 is located between the middle frame 10 and the back cover 50 (the battery 30 is disposed facing the back cover 50). This arrangement allows the battery 30 to be disassembled and repaired by removing the back cover 50, facilitating disassembly and repair of the battery 30.

[0132] It is understood that the area of ​​the display panel 40 facing the first radiator 22 can be a window area. No circuits are required within this window area, allowing the first antenna to receive and transmit signals through the window area, thereby preventing signal obstruction by the circuits within the window area. The window area and the projection of the first radiator 22 on the middle frame 10 can at least partially overlap, or there can be a small gap (e.g., less than or equal to 10 mm) between the window area and the projection of the first radiator 22 on the middle frame 10.

[0133] Continue to refer to Figure 4 and Figure 7 In some embodiments, the middle frame 10 includes a first surface 102 and a second surface 103 disposed opposite each other, with the first surface 102 and the second surface 103 spaced apart along the thickness direction of the middle frame 10. A first groove 12 is provided on the first surface 102, within which the motherboard 21 is disposed. A second groove 13 is provided on the second surface 103, within which the battery 30 is disposed. The projections of the first groove 12 and the second groove 13 on the middle frame 10 are spaced apart. In this arrangement, the motherboard 21 is disposed within the first groove 12 of the middle frame 10, the battery 30 is disposed within the second groove 13 of the middle frame 10, and the first radiator 22, which is coupled to the motherboard 21 as a feed source, at least partially covers the window 11 on the middle frame 10. This utilizes the thickness of the middle frame 10 to provide clearance for the antenna, eliminating the need to elevate the antenna radiator within the housing to provide clearance, thereby reducing the thickness of the electronic device.

[0134] Please refer to Figure 8 In some implementations, part of the first radiator 22 covers the mainboard 21, and the part of the first radiator 22 is located on the side of the mainboard 21 facing away from the middle frame 10. Another part of the first radiator 22 covers the middle frame 10, so that the part of the first radiator 22 covers at least a portion of the window 11; that is, the first radiator 22 covers both the mainboard 21 and the middle frame 10, and is located near the battery 30 (such as Figure 4 ) and the main board 21. In the implementation of the frame 110 including the first frame 111 and the second frame 112, the length of the first frame 111 is less than the length of the second frame 112, and the main board 21 and the battery 30 can be arranged along the length direction of the second frame 112. Since the first radiator 22 is located at the junction of the main board 21 and the battery 30, the first radiator 22 can be located in the middle area of ​​the length direction of the electronic device 100 (parallel to the direction of the second frame 112) (the middle area is near the midpoint of the length direction of the electronic device, such as within a range of one-quarter of the length of the electronic device to the left and right of the midpoint). When the electronic device 100 is in a horizontal position, the user's hand is not likely to block the first radiator 22, so as not to affect the performance of the first antenna (such as the gain of the first antenna).

[0135] It is understood that the horizontal position scenario can be when a user is using a mobile phone to play games or watch videos. In this scenario, the second frame 112 is roughly parallel to the horizontal plane, and the user generally holds the first frame 111 and the area B near the first frame 111, as well as the area C opposite the area B, that is, the user holds the electronic device 100 at both ends in the length direction. The first radiator 22 is located at the junction of the motherboard 21 and the battery 30, which can avoid being blocked by the first radiator 22 in the horizontal position scenario.

[0136] Continue to refer to Figure 4 and Figure 5 In some implementations, the electronic device 100 further includes a small board 60, which is disposed within the accommodation space and on the middle frame 10. The mainboard 21, battery 30, and small board 60 are arranged along the length of the second frame 112, with the battery 30 located between the mainboard 21 and the small board 60. With this arrangement, the first radiator 22 can still be located in the middle region of the length of the electronic device 100. When the electronic device 100 is placed horizontally, the user's hand is less likely to block the first radiator 22, thereby preventing it from affecting the performance of the first antenna.

[0137] Continue to refer to Figure 5 For example, in a vertical screen usage scenario (such as making and receiving calls, browsing the web, sending and receiving videos, etc.), the second frame 112 is roughly perpendicular to the horizontal plane, the first frame 111 can be located at the top of the electronic device 100, and the main board 21 can be arranged close to the first frame 111, that is, the main board 21 is located at the upper part of the electronic device 100, the small board 60 is located at the lower part of the electronic device 100, and the first radiator 22 is located at the junction of the main board 21 and the battery 30, so that the first radiator 22 is located in the upper half of the electronic device 100; in the vertical screen usage scenario, the user's hand generally holds the lower half of the electronic device 100 (such as area A), and the user's hand will not hold outside the first radiator 22, thereby avoiding the user's hand affecting the performance of the first antenna.

[0138] Exemplarily, the small board 60 may include a printed circuit board. Components such as a speaker and a microphone may be provided on the small board 60. The small board 60 is electrically connected to the main board 21 to operate under the control of the processor.

[0139] In the above implementation, the small board 60 and the main board 21 can be located on the same side of the middle frame 10. Accordingly, a third groove 14 is provided on the first surface 102 of the middle frame 10, and the small board 60 is disposed within the third groove 14 to facilitate installation and maintenance of the main board 21 and the small board 60. Of course, the small board 60 and the battery 30 can also be located on the same side of the middle frame 10. Accordingly, the third groove 14 can be provided on the second surface 103 of the main board 21, and the small board 60 can be disposed within the third groove 14.

[0140] Please refer to Figure 9 In some embodiments, the electronic device 100 further includes a dielectric layer 15, which is filled within the window 11. The first radiator 22 can be attached to the surface of the dielectric layer 15. With this arrangement, the dielectric layer 15 supports the first radiator 22 corresponding to the window 11, thereby preventing deformation of the first radiator 22. In one embodiment, the dielectric layer can also be used to adjust the dielectric constant within the window 11, thereby adjusting the performance of the first antenna.

[0141] In some implementations, the dielectric layer 15 may be connected to the first radiator 22 (eg, bonded), and the first radiator 22 may be fixed to the middle frame 10 via the dielectric layer 15 , thereby securing the first radiator 22 .

[0142] In some embodiments, the first radiator 22 is provided with a slit 23 that interrupts the first radiator 22 along its width. Specifically, a portion of the first radiator 22 on one side of the slit 23 couples with the feed source on the mainboard 21, while a portion of the first radiator 22 on the other side of the slit 23 covers at least a portion of the window 11. This arrangement allows the electrical length of the first radiator 22 to be adjusted, thereby adjusting the communication frequency band covered by the first antenna. Alternatively, within the same communication frequency band, the radiation aperture of the first antenna can be expanded, thereby improving the radiation efficiency of the first antenna.

[0143] Figure 10 for Figure 9 Please refer to the return loss curve of the first antenna shown in the figure. Figure 10 In this embodiment of the present application, the first radiator 22 is configured to generate a first resonance and a second resonance. The resonant frequency of the first resonance is lower than the resonant frequency of the second resonance. The resonant frequency of the first resonance may be approximately 5.3 GHz, and the resonant frequency of the second resonance may be 5.8 GHz. This configuration, in which the first radiator 22 generates two resonances, increases the bandwidth of the first antenna, thereby improving the performance of the first antenna.

[0144] Exemplarily, the first resonance and the second resonance may cover the same communication frequency band; or the first resonance and the second resonance may cover different communication frequency bands respectively, which is not limited in the embodiment of the present application.

[0145] In some implementations, under the first resonance, the current on the first radiator 22 is a unidirectional current. Accordingly, the system efficiency and radiation efficiency of the first antenna are both high, and the radiation pattern is mainly composed of Figure 1 The back cover 50 radiates in a direction away from the display panel 40, and the radiation pattern is roughly hemispherical. Under the second resonance, the current on the first radiator 22 on both sides of the slit 23 is a reverse current. At this time, the first antenna still has a certain system efficiency and radiation efficiency. The radiation pattern is Figure 1The side of the rear cover 50 facing away from the display panel 40 is shown in a split-lobe shape (the main lobe and side lobe of the radiation pattern are spaced apart along the length of the electronic device), radiating in a direction away from the display panel 40. It can be seen that both the first resonance and the second resonance can meet communication requirements, giving the first antenna a large bandwidth.

[0146] Please refer to Figure 11 In some implementations, there are multiple slits 23 (e.g., two, three, or four), spaced apart along the length of the first radiator 22. This arrangement further adjusts the electrical length of the first radiator 22. For a given electrical length, providing a greater number of slits 23 can increase the aperture of the first antenna and improve its radiation efficiency. Furthermore, properly positioning the slits 23 can avoid other structures within the electronic device, preventing the first radiator 22 from interfering with their placement and operation, thereby increasing the flexibility of antenna design.

[0147] Figure 12 for Figure 11 In the embodiment in which the first antenna has two slits 23, the return loss curve of the first antenna is shown as follows: Figure 12 It can be seen that the resonant frequency of the first resonance is about 5.3 GHz, and the resonant frequency of the second resonance is about 5.8 GHz; and, under the first resonance, the system efficiency and radiation efficiency of the first antenna are both high, and under the second resonance, the first antenna still has a certain system efficiency and radiation efficiency. Both the first resonance and the second resonance can meet the communication requirements, so that the first antenna has a larger bandwidth.

[0148] Please refer to Figure 13 In some embodiments, the middle frame 10 further includes connecting ribs 16 disposed within the window 11 and connected to the sidewalls of the window 11. The window 11 can reduce the structural strength of the middle frame 10. The provision of the connecting ribs 16 can improve the structural strength of the middle frame 10 and thereby prevent deformation of the middle frame 10. It will be appreciated that the connecting ribs 16 disposed within the window 11 can separate the window 11 into a first window and a second window. The first window and the second window can be arranged substantially along the length of the first radiator 22.

[0149] The connecting rib 16 may be in contact with the first radiator 22 ; alternatively, there may be a gap between the connecting rib 16 and the first radiator 22 , and the gap may be filled with dielectric material so that the connecting rib 16 can support the first radiator 22 to prevent deformation of the first radiator 22 .

[0150] Figure 14 for Figure 13 In the embodiment of the first antenna with the connecting rib 16, the return loss curve of the first antenna is shown as follows: Figure 14It can be seen that the resonant frequency of the first resonance is about 5.3 GHz, and the resonant frequency of the second resonance is about 5.8 GHz; and, under the first resonance, the system efficiency and radiation efficiency of the first antenna are both high, and under the second resonance, the first antenna still has a certain system efficiency and radiation efficiency. Both the first resonance and the second resonance can meet the communication requirements, so that the first antenna has a larger bandwidth.

[0151] In some implementations, both ends of the first radiator 22 along its length are open, and the distance between the connecting rib 16 and the midpoint of the first radiator 22 along its length is less than or equal to one-quarter of the length of the first radiator 22. This arrangement allows the connecting rib 16 to correspond to the middle of the first radiator 22. Since the middle of the first radiator 22 generally carries the highest current, providing the connecting rib 16 there can reduce its impact on the first radiator 22, thereby ensuring higher efficiency for the first antenna.

[0152] Please refer to Figure 15 In some embodiments, the frame 110 includes a first frame 111 and a second frame 112, wherein the length of the first frame 111 is shorter than the length of the second frame 112. The electronic device 100 further includes a second antenna and a switch device 24. The second radiator 113 of the second antenna is disposed on the first frame 111. For example, the second radiator 113 can be connected to the first frame 111 by bolts or snaps. Alternatively, the second radiator 113 can be integrally formed with the first frame 111, i.e., a portion of the first frame 111 serves as the second radiator 113. The first radiator 22 and the second radiator 113 are both coupled to the switch device 24. The switch device 24 can switch the operating state of the first antenna and / or the second antenna. For example, the switch device 24 can be used to enable the first antenna to be in an active state and the second antenna to be in an off-state (non-operating) state, in which case the first antenna is used to transmit and receive signals. The switch device 24 can also be used to disable the first antenna and enable the second antenna to be in an active state, in which case the second antenna is used to transmit and receive signals.

[0153] Exemplarily, the communication frequency bands of the first antenna and the second antenna can be at least partially the same, and they can transmit and receive the same signals; for example, the first antenna and the second antenna can both be used to transmit and receive cellular signals or WIFI signals. The embodiments of the present application do not limit the signals transmitted and received by the first antenna and the second antenna.

[0154] With the above configuration, the switch device 24 can be used to select the better performing antenna between the first and second antennas for signal transmission and reception, thereby ensuring the communication quality of the electronic device 100. It is understood that in landscape mode, since the user holds the electronic device 100 near the first bezel 111, the user's hand will block the second radiator 113, thereby affecting the signal transmission and reception of the second radiator 113. In this case, the switch device 24 can be used to control the first antenna to be in an active state and the second antenna to be in an off state, thereby transmitting and receiving signals through the first radiator 22, thereby ensuring good communication quality. In portrait mode, the first bezel 111 is generally facing the zenith. In this case, the switch device 24 can be used to control the first radiator 22 to be in an off state and the second radiator 113 to be in an active state, thereby transmitting and receiving signals through the second radiator 113, thereby ensuring good communication quality. In other words, the electronic device 100 can ensure good communication quality in all application scenarios.

[0155] Please refer to Figure 16 In other embodiments, the electronic device 100 further includes a second antenna, and the second radiator 113 of the second antenna is arranged on the second frame 112. For example, the second radiator 113 can be connected to the second frame 112 by bolt connection or clamping, or the second radiator 113 and the second frame 112 are an integral structure, that is, part of the second frame 112 serves as the second radiator 113. The embodiments of the present application are not limited to this.

[0156] In some implementations, the second antenna and the first antenna share the same communication frequency band, allowing the first and second antennas to independently transmit and receive signals, forming a Multiple-Input Multiple-Output (MIMO) system, thereby improving communication performance. Accordingly, the minimum distance L between the first radiator 22 and the second radiator 113 is less than or equal to 10 mm (e.g., 10 mm, 8 mm, 5 mm, etc.) to ensure a compact structure.

[0157] In some embodiments, there is a partial middle frame 10 between the first radiator 22 and the second radiator 113, and the middle frame 10 is generally grounded. The partial middle frame 10 improves the isolation between the first radiator 22 and the second radiator 113 to ensure the antenna radiation efficiency of each of the first antenna and the second antenna.

[0158] Figure 17 for Figure 16 The S-curve diagrams of the first antenna and the second antenna are shown by Figure 17 From the return loss curve of the first antenna and the return loss curve of the second antenna, we can see that the communication frequency bands of the first antenna and the second antenna are the same. Figure 17It can be seen from the isolation curve in that within the communication frequency band, there is a certain degree of isolation between the first antenna and the second antenna, which can meet the communication requirements.

[0159] Please refer to Figure 18 In some embodiments, the first radiator 22 includes a first sub-radiator 221 and a second sub-radiator 222, and the first sub-radiator 221 and the second sub-radiator 222 both cover a portion of the window 11 (eg, Figure 6 As shown, a first feeding point a is provided on the first sub-radiator 221, and the first feeding point a is used to receive a signal from a feed source. The first sub-radiator 221 and the second sub-radiator 222 are spaced apart in a direction parallel to the middle frame 10, and the first sub-radiator 221 is used to couple and feed power to the second sub-radiator 222. This arrangement can increase the area of ​​the first radiator 22, thereby forming more resonant modes (such as forming a third resonance, the resonant frequency of the third resonance can be greater than the resonant frequency of the second resonance; or the resonant frequency of the third resonance can be less than the resonant frequency of the first resonance), which can further increase the bandwidth of the first antenna.

[0160] Exemplarily, part of the first sub-radiator 221 can be covered on the main board 21 so that the feed source on the main board 21 can be coupled with the first feeding point a, and part of the first sub-radiator 221 can be covered on the window 11; the length directions of the first sub-radiator 221 and the second sub-radiator 222 can be parallel, and the first sub-radiator 221 and the second sub-radiator 222 can be arranged at intervals along their width directions.

[0161] Please refer to Figure 19 In other embodiments, the first radiator 22 includes a first sub-radiator 221 and a second sub-radiator 222, and the first sub-radiator 221 and the second sub-radiator 222 both cover a portion of the window 11 (eg Figure 6 As shown, a first sub-radiator 221 and a second sub-radiator 222 are spaced apart in a direction parallel to the middle frame 10. A first feeding point a is provided on the first sub-radiator 221, and a second feeding point b is provided on the second sub-radiator 222. The first sub-radiator 221 is used to generate a first resonance, and the second sub-radiator 222 is used to generate a second resonance. The resonant frequency of the first resonance is staggered with the resonant frequency of the second resonance. This arrangement allows different resonances to be formed through different feeding points, thereby increasing the bandwidth of the first antenna or covering different communication frequency bands.

[0162] Continue to refer to Figure 2In the embodiment of the present application, there may be multiple first antennas, and accordingly, there may be multiple first radiators 22. The multiple first radiators 22 are arranged at intervals, and multiple windows 11 are provided on the middle frame 10. Each first radiator 22 corresponds to a window 11, and each first radiator 22 covers at least part of the corresponding window 11 to ensure that each first antenna has a higher gain.

[0163] It is understandable that the communication frequency bands corresponding to each first antenna may be the same or different, and the embodiments of the present application do not impose any limitation on this.

[0164] The above description is merely a specific embodiment of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An electronic device, characterized in that: include: A battery, a middle frame, an outer shell, and a first antenna, wherein the battery, the middle frame, and the first antenna are disposed within the outer shell, with at least a portion of the middle frame disposed between the battery and a first radiator of the first antenna. The middle frame has a window extending therethrough, and the first radiator covers at least a portion of the window and is located between the window and an insulating portion of the outer shell. The first antenna is used to transmit signals and / or receive signals.

2. The electronic device according to claim 1, wherein The electronic device also includes a mainboard, the middle frame includes a first surface and a second surface arranged opposite to each other, a first groove is provided on the first surface, the mainboard is arranged in the first groove, a second groove is provided on the second surface, the battery is arranged in the second groove, the projections of the first groove and the second groove on the middle frame are arranged at intervals, the mainboard has a feed source, and the feed source is coupled to the first radiator.

3. The electronic device according to claim 2, wherein: Part of the first radiator is located on a side of the mainboard facing away from the middle frame. A feeding component is provided on the mainboard, and the feed source is coupled to the first radiator through the feeding component.

4. The electronic device according to claim 2 or 3, characterized in that: The first radiator extends along the surface of the mainboard, and a portion of the first radiator extends outside the mainboard.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The window is filled with a dielectric layer.

6. The electronic device according to any one of claims 1 to 5, characterized in that: The first radiator is provided with a slit, and the slit cuts the first radiator along a width direction of the first radiator.

7. The electronic device according to claim 6, wherein: There are a plurality of the breaks, and the plurality of the breaks are arranged at intervals along the length direction of the first radiator.

8. The electronic device according to any one of claims 1 to 7, characterized in that: The middle frame further includes connecting ribs, and the connecting ribs are arranged in the window.

9. The electronic device according to claim 8, wherein: Both ends of the first radiator along the length direction are open ends, and along the length direction, the distance between the connecting rib and the midpoint of the radiator is less than or equal to one quarter of the length dimension of the radiator.

10. The electronic device according to any one of claims 2 to 9, characterized in that: The electronic device further includes a frame, the frame being arranged around the periphery of the middle frame; the frame including a first frame and a second frame adjacent to each other, the first frame being arranged perpendicular to the second frame, and the length of the first frame being shorter than the length of the second frame; The mainboard and the battery are arranged along the length direction of the second frame.

11. The electronic device according to claim 10, characterized in that The electronic device also includes a second antenna and a switching device. The second radiator of the second antenna is arranged on the first frame. The switching device is coupled to both the first radiator and the second radiator. The switching device is used to switch the working state of the first antenna and / or the second antenna.

12. The electronic device according to claim 10, wherein: The electronic device further includes a second antenna, a second radiator of the second antenna is arranged on the second frame, and the communication frequency bands of the first antenna and the second antenna are at least partially the same.

13. The electronic device according to claim 12, wherein: The minimum distance between the first radiator and the second radiator is less than or equal to 10 mm.

14. The electronic device according to any one of claims 1 to 13, characterized in that: The first radiator is used to generate a first resonance and a second resonance, and the resonance frequency of the first resonance is lower than the resonance frequency of the second resonance.

15. The electronic device according to claim 14, characterized in that The first radiator includes a first sub-radiator and a second sub-radiator, and the first sub-radiator and the second sub-radiator both cover part of the window. The first sub-radiator and the second sub-radiator are arranged at intervals in a direction parallel to the middle frame. A first feeding point is provided on the first sub-radiator, and the first sub-radiator is used to couple and feed power to the second sub-radiator.

16. The electronic device according to any one of claims 1 to 13, characterized in that: The first radiator includes a first sub-radiator and a second sub-radiator, and the first sub-radiator and the second sub-radiator both cover part of the window. The first sub-radiator and the second sub-radiator are arranged at intervals in a direction parallel to the middle frame. A first feeding point is provided on the first sub-radiator, and a second feeding point is provided on the second sub-radiator. The first sub-radiator is used to generate a first resonance, and the second sub-radiator is used to generate a second resonance. The resonant frequency of the first resonance is staggered with the resonant frequency of the second resonance.

17. The electronic device according to any one of claims 1 to 16, characterized in that: The housing includes a display panel and a back cover, wherein the display panel and the back cover are arranged on both sides of the middle frame. The mainboard and the first radiator are both located between the middle frame and the back cover, and the battery is located between the middle frame and the display panel; or The first radiator is located between the middle frame and the back cover, and the battery and the mainboard are both located between the middle frame and the display panel.

18. A motherboard assembly, characterized in that: include: A mainboard and a first antenna, wherein a feeding element is provided on the mainboard, one end of a first radiator of the first antenna is coupled to the feeding element, and the feeding element is used to couple and feed power to the first radiator; The first radiator extends along the surface of the mainboard, and a portion of the first radiator extends outside the mainboard; The first antenna is used to transmit signals and / or receive signals.

19. The motherboard assembly according to claim 18, wherein: The portion of the first radiator extending outside the mainboard is used to cover the window of the middle frame of the electronic device.

20. The motherboard assembly according to claim 18 or 19, characterized in that: The mainboard assembly further includes a flexible substrate, the first radiator is arranged on the flexible substrate, and one end of the flexible substrate is connected to the mainboard.

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