Electronic device

Abstract

The present disclosure relates to an electronic device, comprising a main side and a sub-side, the sub-side can rotate around a rotation axis to make the electronic device in a closed state, the main side is provided with a first antenna, the first antenna comprises a slit; the sub-side is provided with a second antenna, the second antenna comprises a groove; in the closed state, the slit in the first antenna and the groove in the second antenna are opposite. The embodiment can set the groove in the second antenna, can not affect the length of the second antenna, and can also cooperate with the slit when the main side and the sub-side are closed, so as to improve the radiation performance of the first antenna.

Description

Technical Field

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

[0002] As smartphones become larger, some smartphones are starting to adopt foldable screens, which can meet the needs of large-screen display and provide a better experience for videos, games and other applications; at the same time, they can reduce space and become more convenient to carry.

[0003] Currently, smartphones have increasingly higher demands for antenna frequency bands, requiring support for a growing number of bands. With decreasing space in smartphones, the usable space for each antenna is also shrinking. Therefore, designing more antennas within the limited space of foldable phones is a significant challenge for all antenna engineers. Summary of the Invention

[0004] This disclosure provides an electronic device to address the shortcomings of related technologies.

[0005] According to a first aspect of the present disclosure, a square electronic device is provided, including a main side and a secondary side, wherein the secondary side is rotatable about a rotation axis to bring the electronic device into a closed state, the main side is provided with a first antenna including a slit; the secondary side is provided with a second antenna including a groove.

[0006] In the closed state, the gap in the first antenna and the groove in the second antenna are opposite each other.

[0007] Optionally, the main side is further provided with a third antenna, and the secondary side is further provided with a fourth antenna; in the closed state, the third antenna and the fourth antenna are arranged opposite to each other.

[0008] Optionally, the main side includes a main housing, a first L-shaped radiating section, a T-shaped radiating section, a second L-shaped radiating section, a first feed point, and a second feed point; the first L-shaped radiating section, the T-shaped radiating section, and the second L-shaped radiating section are respectively connected to the main housing; wherein,

[0009] A first feed point is provided on the first L-shaped radiating segment, and a second feed point is provided at one end of the transverse radiating segment of the T-shaped radiating segment, and the end of the first L-shaped radiating segment with the first feed point is directly opposite the end of the transverse radiating segment with the second feed point.

[0010] The first L-shaped radiating segment, the T-shaped radiating segment, and the main housing form an L-shaped gap; and the first L-shaped radiating segment, the main housing, the T-shaped radiating segment, the first feed point, and the second feed point form the first antenna;

[0011] Optionally, the main side further includes a second L-shaped radiating section; the second L-shaped radiating section is connected to the main housing; wherein,

[0012] The second L-shaped radiating segment is directly opposite the end of the transverse radiating segment that is away from the second feed point; the second L-shaped radiating segment, the T-shaped radiating segment, and the main housing form a strip-shaped gap; and the second L-shaped radiating segment, the T-shaped radiating segment, and the main housing form a third antenna.

[0013] Optionally, the secondary side includes a secondary housing, a third L-shaped radiating section, a fourth L-shaped radiating section, a third feed point, and a fourth feed point; the third L-shaped radiating section and the fourth L-shaped radiating section are respectively connected to the secondary housing; a groove is provided on the fourth L-shaped radiating section; wherein,

[0014] A third feed point is provided on the third L-shaped radiating section, and a fourth feed point is provided on the fourth L-shaped radiating section; the third L-shaped radiating section and the fourth L-shaped radiating section face each other to form a gap; the third L-shaped radiating section and the fourth L-shaped radiating section face each other to form a gap, and the fourth feed point is provided between the gap and the groove;

[0015] The third L-shaped radiating segment, the fourth L-shaped radiating segment, and the sub-shell form an L-shaped gap; the lateral portion of the L-shaped gap is away from the third L-shaped radiating segment; the third L-shaped radiating segment, the third feed point, and the sub-shell form a fourth antenna, and the fourth L-shaped radiating segment, the fourth feed point, and the sub-shell form a second antenna.

[0016] Optionally, the first antenna is a GPS & WiFi antenna, operating in the L1 / L5 / WiFi 2.4G / WiFi 5G frequency band;

[0017] The second antenna is a low-frequency antenna, operating in the B5 / B8 / B20 / B28 frequency band;

[0018] The third antenna is a high-frequency antenna, operating in the N78 / 79 or LTE B1 / B3 / B7 frequency band;

[0019] The fourth antenna is a mid-to-high frequency antenna, operating in the B32 / N41 frequency band.

[0020] Optionally, the width of the groove is the same as the width of the gap in the first antenna; and the depth of the groove is less than the depth of the gap in the first antenna; the direction of the width of the groove is parallel to the extension direction of the frame where the first antenna and the second antenna are located, and the direction of the depth of the groove is perpendicular to the extension direction of the frame where the first antenna and the second antenna are located.

[0021] Optionally, the fourth antenna includes a first matching circuit, the input of which is connected to the body of the fourth antenna and the output is grounded, for eliminating current signals coupled from the first antenna and / or the third antenna in a closed state.

[0022] Optionally, the first matching circuit includes an LC filter circuit.

[0023] Optionally, the inductor value in the LC filter circuit ranges from 24 to 30 nH, and the capacitor value ranges from 0.2 to 0.3 pF.

[0024] Optionally, the second antenna includes a second matching circuit, the input of which is connected to the body of the second antenna and the output of which is grounded, for eliminating current signals coupled from the first antenna and / or the third antenna in the closed state.

[0025] Optionally, the second matching circuit includes a switching switch, multiple matching branches, and a ground terminal;

[0026] The input terminal of the switching switch is connected to the body of the second antenna, and each output terminal of the switching switch is connected to one end of each matching branch; the other end of each matching branch is connected to the ground terminal.

[0027] Optionally, the plurality of matching branches includes a capacitor branch, wherein the capacitance value of a preset capacitor in the capacitor branch exceeds a preset capacitance value.

[0028] Optionally, the switching switch includes a fully open state, in which all of the plurality of matching branches are connected to the body of the second antenna; and the equivalent capacitance of the plurality of matching branches exceeds a preset capacitance value.

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

[0030] As can be seen from the above embodiments, this embodiment can have a main side and a secondary side. The secondary side can rotate around a rotation axis to bring the electronic device into a closed state. The main side is provided with a first antenna, which includes a slot. The secondary side is provided with a second antenna, which includes a groove. In the closed state, the slot in the first antenna and the groove in the second antenna are opposite each other. Thus, this embodiment can provide a groove in the second antenna without affecting its length, and can also cooperate with the slot when the main side and the secondary side are closed to improve the radiation performance of the first antenna. In addition, this embodiment can increase the number of antennas in the electronic device to meet its requirements for multiple antenna frequency bands; and, by setting the antennas on the main side and the secondary side respectively, the number of antennas on a single side can be reduced, ensuring that each antenna has sufficient space.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0033] Figure 1 This is a schematic diagram illustrating an electronic device in an unfolded state according to an exemplary embodiment.

[0034] Figure 2 This is a schematic diagram illustrating an electronic device in a closed state according to an exemplary embodiment.

[0035] Figure 3 This is a schematic diagram illustrating another electronic device in an unfolded state according to an exemplary embodiment.

[0036] Figure 4 This is a schematic diagram illustrating a matching circuit on the flip side according to an exemplary embodiment.

[0037] Figure 5 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Detailed Implementation

[0038] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described below by way of example do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatus consistent with some aspects of this disclosure as detailed in the appended claims.

[0039] To address the aforementioned technical problems, this disclosure provides an electronic device, such as a smartphone or tablet computer with a foldable screen. The electronic device includes a main side and a secondary side, wherein the secondary side can rotate about a rotation axis, thereby allowing the electronic device to be in an unfolded or closed state. Figure 1 This is a top view of an electronic device in an unfolded state according to an exemplary embodiment. Figure 2 This is a side view of an electronic device in a closed state according to an exemplary embodiment. See also Figure 1 and Figure 2An electronic device includes a main-side base and a secondary-side flip. The secondary-side flip is rotatable about a rotation axis to bring the electronic device into a closed state. The main-side base is provided with a first antenna 1, which includes a slot. The secondary-side flip is provided with a second antenna 2, which includes a groove. In the closed state, the slot in the first antenna 1 and the groove in the second antenna 2 are opposite each other. In this embodiment, the groove can be provided in the second antenna without affecting the length of the second antenna, and the slot can be matched when the main and secondary sides are closed to improve the radiation performance of the first antenna.

[0040] It should be noted that, where permissible, at least one antenna can be installed on both the main and secondary sides. For ease of explanation, this embodiment uses two antennas on each side as an example to describe the various schemes. See also... Figure 1 and Figure 2 The main side (Base) is equipped with a third antenna 3, and the secondary side (Flip) is equipped with a fourth antenna 4. In the closed state, the third antenna 3 and the fourth antenna 4 are positioned opposite each other.

[0041] At this point, the first antenna 1 can be a GPS & WiFi antenna, with the GPS antenna operating in the L1 / L5 frequency band and the WiFi antenna operating in the WiFi 2.4 GHz (Hz) or WiFi 5 GHz (Hz) frequency band. The third antenna 3 can be a high-frequency antenna, operating in the N78 / N79 or LTE B1 / B3 / B7 frequency band. The fourth antenna 4 is a mid-to-high frequency antenna, operating in the B32 / N41 frequency band. The second antenna 2 is a low-frequency antenna, operating in the B5 / B8 / B20 / B28 frequency band. It should be noted that the operating frequency bands of the first antenna 1, third antenna 3, fourth antenna 4, and second antenna 2 are only for illustrative purposes, and technicians can set them according to specific scenarios, which are not limited here. In this way, this embodiment can increase the number of antennas in the electronic device to meet its needs for multiple antenna frequency bands; and, by setting the antennas on the main side and the secondary side respectively, the number of antennas on a single side can be reduced, ensuring that each antenna has sufficient space, which is beneficial to improving the working efficiency of each antenna.

[0042] In one embodiment, see Figure 3 The main-side base includes a main housing, a first L-shaped radiating section 11, a T-shaped radiating section 15, a second L-shaped radiating section 12, a first feed point 16, and a second feed point 17. The first L-shaped radiating section 11, the T-shaped radiating section 15, and the second L-shaped radiating section 12 are respectively connected to the main housing; wherein,

[0043] A first feed point 16 is provided on the first L-shaped radiating segment 11, and a second feed point 17 is provided at one end of the transverse radiating segment of the T-shaped radiating segment 15. The end of the first L-shaped radiating segment 11 with the first feed point 16 is directly opposite the end of the transverse radiating segment with the second feed point 17. Thus, the first L-shaped radiating segment 11, the T-shaped radiating segment 15, and the main housing form an L-shaped gap; and the first L-shaped radiating segment 11, the main housing, the T-shaped radiating segment 15, the first feed point 16, and the second feed point 17 form the first antenna 1. The second L-shaped radiating segment 12 is directly opposite the end of the transverse radiating segment away from the second feed point 17; the second L-shaped radiating segment 12, the T-shaped radiating segment 15, and the main housing form a strip-shaped gap; and the second L-shaped radiating segment 12, the T-shaped radiating segment 15, and the main housing form the third antenna 3.

[0044] In one embodiment, see Figure 3 The secondary-side flip includes a secondary housing, a third L-shaped radiating section 13, a fourth L-shaped radiating section 14, a third feed point 18, and a fourth feed point 19. The third L-shaped radiating section 13 and the fourth L-shaped radiating section 14 are respectively connected to the secondary housing; a groove is provided on the fourth L-shaped radiating section 14; wherein,

[0045] A third feed point 18 is provided on the third L-shaped radiating section 13, and a fourth feed point 19 is provided on the fourth L-shaped radiating section 14; the third L-shaped radiating section 13 and the fourth L-shaped radiating section 14 face each other to form a gap; the fourth feed point 19 is located between the gap and the groove. Thus, the third L-shaped radiating section 13, the fourth L-shaped radiating section 14, and the sub-shell form an L-shaped gap; the transverse portion of the L-shaped gap ( Figure 3 (The middle section is vertically distributed) away from the third L-shaped radiating section 13; the third L-shaped radiating section 13, the third feed point 18 and the sub-shell form the fourth antenna 4, and the fourth L-shaped radiating section 14, the fourth L-shaped feed point 19 and the sub-shell form the second antenna 2.

[0046] In one embodiment, see Figures 1-3The secondary antenna 2 in the secondary flip includes a groove 21. The width of the groove 21 is the same as the width of the slot in the first antenna, and the depth of the groove 21 is less than the depth of the slot in the first antenna. The width of the groove 21 is parallel to the extension direction of the frame containing the first and second antennas, and the depth of the groove 21 is perpendicular to the extension direction of the frame containing the first and second antennas. In the closed state, the groove and the slot are opposite each other; in the unfolded state, the groove and the slot are symmetrical about the rotation axis. Thus, compared to directly setting a slot at the second antenna, this embodiment uses a groove 21 at the second antenna to increase the length of the secondary antenna 2, ensuring its transmission efficiency; or, without reducing the length of the secondary antenna, the transmission efficiency of the first and second antennas can be improved by using a groove 21. Furthermore, when the electronic device is closed, the groove and the slot are directly opposite each other, which is equivalent to having a small gap simultaneously on the device, ensuring the aesthetics of the electronic device.

[0047] In practical applications, the first antenna 1 is a dual-band GPS & WiFi antenna, employing a single-slot dual-feed scheme. When the electronic device is in a closed state (i.e., folded state), coupling cavities may form between the first antenna 1 and the second antenna 2, the third antenna 3 and the fourth antenna 4, and between the first antenna 1 and the fourth antenna 4. This can cause coupling currents to form on the metal bodies of the fourth antenna 4 and the second antenna 2, resulting in a decrease in the operating efficiency of the first antenna 1 and / or the third antenna 3.

[0048] Therefore, in this embodiment, the fourth antenna 4 includes a first matching circuit. The input terminal of the first matching circuit is connected to the body of the fourth antenna 4, and its output terminal is grounded. In this way, the first matching circuit can eliminate the current signal coupled from the first antenna 1, or the third antenna 3, or the first antenna 1 and the third antenna 3 when the electronic device is in a closed state. That is, the first matching circuit can guide the higher frequency current signal coupled from the first antenna 1 or the third antenna 3 to ground, avoiding the formation of a radiation field by the coupled current signal to cancel the radiation field formed by the first antenna 1 or the third antenna 3, thereby ensuring the normal operation of the first antenna 1 and the third antenna 3.

[0049] In this embodiment, see Figure 4 The first matching circuit may include an LC filter circuit. In this LC filter circuit, the inductor L1 ranges from 24 to 30 nH, the capacitor C1 ranges from 0.2 to 0.3 pF, and the operating frequency range is 1.58 GHz to 1.7 GHz. This allows for the filtering of current signals (such as the L1 band) coupled from the first antenna 1 and the third antenna 3. In practical applications, a larger inductance value in the LC filter circuit results in a smaller impact on the fourth antenna; therefore, in this example, the inductor value is 30 nH.

[0050] Considering the groove 21 present in the second antenna 2, which can affect the operating performance of the first antenna 1 and / or the third antenna 3, this embodiment includes a second matching circuit for the second antenna 2. The input of the second matching circuit is connected to the body of the second antenna, and its output is grounded. This second matching circuit can eliminate the current signal coupled from the first antenna 1 and / or the third antenna 3 when the electronic device is in a closed state. In other words, the second matching circuit can guide the higher frequency current signal coupled from the first antenna 1 or the third antenna 3 to ground, ensuring the normal operation of the first antenna 1 and the third antenna 3, thereby improving their operating efficiency.

[0051] In this embodiment, see Figure 4 The second matching circuit may include a switching switch K and multiple matching branches ( Figure 4 The diagram shows two capacitor branches and two inductor branches (which are adjustable) and a ground terminal. The input terminal of the switch is connected to the main body of the second antenna, and each output terminal of the switch is connected to one end of a matching branch; the other end of each matching branch is connected to the ground terminal. In this way, the electronic device can control the switch to switch to a specified matching branch, allowing the second antenna to be connected to the corresponding matching impedance, thereby adjusting its operating frequency band.

[0052] The switching device may include, but is not limited to, single-pole multi-throw switches, relays, and transistors; of course, it can also be a switching circuit with multiple outputs, which is not limited here. In one example, the switching device is an SP4T switch.

[0053] The multiple matching branches may include, but are not limited to: resistor branches, inductor branches, capacitor branches, and impedance circuits formed by at least two of resistors, inductors, and capacitors. These multiple matching branches may have different capacitance values, such as 0.3pF to 2pF.

[0054] In this embodiment, one matching branch can be reserved for optimizing the first antenna 1 and the third antenna 3, while the remaining matching branches can be used to adjust the operating frequency band of the second antenna 2. Considering that the second antenna is a low-frequency antenna, while the first antenna 1 and the third antenna 3 are high-frequency antennas, the reserved matching branch can be a capacitor branch. The capacitance value of the preset capacitor in this capacitor branch exceeds a preset capacitance value (e.g., 1.5pF). In other words, without affecting the operation of the second antenna, the larger the capacitance value of the preset capacitor, the better, thereby filtering out the current signal coupled from the first antenna and the third antenna.

[0055] In practical applications, please refer to [link / reference]. Figure 4Taking the second matching circuit comprising four matching branches as an example, three matching branches can be used to adjust the operating frequency band of the second antenna, and the other matching branch can be used to optimize the use of the first antenna 1 and the third antenna 3. Alternatively, a fully open state can be set, in which all four matching branches are simultaneously connected. In this state, the equivalent capacitance of the four matching branches is at its maximum, and correspondingly, the operating efficiency of the first antenna 1 and the third antenna 3 is at its highest. As long as the operating frequency band of the second antenna can be adjusted and the main antenna optimized, the combination of matching branches falls within the protection scope of this disclosure.

[0056] Figure 5 This is a block diagram illustrating an electronic device according to an exemplary embodiment. For example, the electronic device 500 may be a smartphone, computer, digital broadcasting terminal, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0057] Reference Figure 5 The electronic device 500 may include one or more of the following components: processing component 502, memory 504, power supply component 506, multimedia component 508, audio component 510, input / output (I / O) interface 512, sensor component 514, communication component 516, and image acquisition component 518.

[0058] Processing component 502 typically controls the overall operation of electronic device 400, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 502 may include one or more processors 520 to execute computer programs. Furthermore, processing component 502 may include one or more modules to facilitate interaction between processing component 502 and other components. For example, processing component 502 may include a multimedia module to facilitate interaction between multimedia component 508 and processing component 502.

[0059] Memory 504 is configured to store various types of data to support the operation of electronic device 500. Examples of such data include computer programs for any application or method operating on electronic device 500, contact data, phone book data, messages, pictures, videos, etc. Memory 504 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0060] Power supply component 506 provides power to various components of electronic device 500. Power supply component 506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 500. Power supply component 506 may include a power chip, and a controller may communicate with the power chip to control the power chip to turn on or off switching devices, enabling or disabling battery power supply to the motherboard circuitry.

[0061] Multimedia component 508 includes a screen that provides an output interface between electronic device 500 and target object. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the target object. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation.

[0062] Audio component 510 is configured to output and / or input audio signals. For example, audio component 510 includes a microphone (MIC) configured to receive external audio signals when electronic device 500 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 504 or transmitted via communication component 516. In some embodiments, audio component 510 also includes a speaker for outputting audio signals.

[0063] I / O interface 512 provides an interface between processing component 502 and peripheral interface modules, such as keyboards, click wheels, buttons, etc.

[0064] Sensor assembly 514 includes one or more sensors for providing state assessments of various aspects of electronic device 500. For example, sensor assembly 514 can detect the on / off state of electronic device 500, the relative positioning of components (e.g., the display screen and keypad of electronic device 500), changes in position of electronic device 500 or a component, the presence or absence of contact between a target object and electronic device 500, the orientation or acceleration / deceleration of electronic device 500, and temperature changes of electronic device 500. In this example, sensor assembly 514 may include a magnetic sensor, a gyroscope, and a magnetic field sensor, wherein the magnetic field sensor includes at least one of the following: a Hall sensor, a thin-film magnetoresistive sensor, and a magnetic fluid accelerometer.

[0065] Communication component 516 is configured to facilitate wired or wireless communication between electronic device 500 and other devices. Electronic device 400 can access wireless networks based on communication standards, such as WiFi, 2G, 3G, 4G, 5G, or combinations thereof. In one exemplary embodiment, communication component 516 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 516 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0066] In an exemplary embodiment, the electronic device 500 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0067] In an exemplary embodiment, a non-transitory readable storage medium including an executable computer program is also provided, such as a memory 404 including instructions. The readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, or optical data storage device, etc.

[0068] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0069] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An electronic device, comprising: The main side and the secondary side are included, the secondary side can rotate around the rotation axis to make the electronic device in a closed state, the main side is provided with a first antenna, the first antenna includes a slit; the secondary side is provided with a second antenna, the second antenna includes a groove; the depth of the groove is less than the depth of the slit in the first antenna; the direction of the groove width is parallel to the extension direction of the frame where the first antenna and the second antenna are located, and the direction of the groove depth is perpendicular to the extension direction of the frame where the first antenna and the second antenna are located; The groove is used to improve the emission efficiency of the first antenna and the second antenna; In the closed state, the slit in the first antenna and the groove in the second antenna are opposite.

2. The electronic device of claim 1, wherein, The main side is also provided with a third antenna, and the secondary side is also provided with a fourth antenna; in the closed state, the third antenna and the fourth antenna are oppositely arranged.

3. The electronic device according to claim 1 or 2, wherein The main side includes a main shell, a first L-shaped radiation segment, a T-shaped radiation segment, a second L-shaped radiation segment, a first feeding point and a second feeding point; the first L-shaped radiation segment, the T-shaped radiation segment and the second L-shaped radiation segment are connected with the main shell respectively; wherein, The first L-shaped radiation segment is provided with a first feeding point, one end of the transverse radiation segment of the T-shaped radiation segment is provided with a second feeding point, and one end of the first L-shaped radiation segment provided with the first feeding point is opposite to one end of the transverse radiation segment provided with the second feeding point; The first L-shaped radiation segment, the T-shaped radiation segment and the main shell form an L-shaped slit; and the first L-shaped radiation segment, the main shell, the T-shaped radiation segment, the first feeding point and the second feeding point form the first antenna.

4. The electronic device of claim 3, wherein, The main side further includes a second L-shaped radiation segment; the second L-shaped radiation segment is connected with the main shell; wherein, The second L-shaped radiation segment is opposite to one end of the transverse radiation segment away from the second feeding point; the second L-shaped radiation segment, the T-shaped radiation segment and the main shell form a strip-shaped slit; and the second L-shaped radiation segment, the T-shaped radiation segment and the main shell form a third antenna.

5. The electronic device of claim 1 or 2, wherein, The secondary side includes a secondary shell, a third L-shaped radiation segment, a fourth L-shaped radiation segment, a third feeding point and a fourth feeding point; the third L-shaped radiation segment and the fourth L-shaped radiation segment are connected with the secondary shell respectively; the fourth L-shaped radiation segment is provided with a groove; wherein, The third L-shaped radiation segment is provided with a third feeding point, and the fourth L-shaped radiation segment is provided with a fourth feeding point; the third L-shaped radiation segment and the fourth L-shaped radiation segment are opposite to form a slit; the fourth feeding point is arranged between the slit and the groove; The third L-shaped radiation segment, the fourth L-shaped radiation segment and the secondary shell form an L-shaped slit; the transverse part of the L-shaped slit is away from the third L-shaped radiation segment; the third L-shaped radiation segment, the third feeding point and the secondary shell form a fourth antenna, and the fourth L-shaped radiation segment, the fourth feeding point and the secondary shell form the second antenna.

6. The electronic device of claim 2, wherein, The first antenna is a GPS&WiFi antenna, and the working frequency band is L1 / L5 / WiFi 2.4G / WiFi 5G. The second antenna is a low-frequency antenna, and the working frequency band is B5 / B8 / B20 / B28. The third antenna is a high-frequency antenna, and the working frequency band is N78 / 79 or LTE B1 / B3 / B7. The fourth antenna is a medium-high-frequency antenna, and the working frequency band is B32 / N41.

7. The electronic device of claim 1, wherein, The width of the groove is the same as the width of the slot in the first antenna.

8. The electronic device of claim 2, wherein, The fourth antenna comprises a first matching circuit, and the input end of the first matching circuit is connected with the body of the fourth antenna and the output end is grounded, so as to eliminate the current signal coupled from the first antenna and / or the third antenna in the closed state.

9. The electronic device of claim 8, wherein, The first matching circuit comprises an LC filter circuit.

10. The electronic device of claim 9, wherein, The inductance of the LC filter circuit ranges from 24nH to 30nH, and the capacitance ranges from 0.2PF to 0.3PF.

11. The electronic device of claim 1, wherein, The second antenna comprises a second matching circuit, and the input end of the second matching circuit is connected with the body of the second antenna and the output end is grounded, so as to eliminate the current signal coupled from the first antenna and / or the third antenna in the closed state.

12. The electronic device of claim 11, wherein, The second matching circuit comprises a switching switch, a plurality of matching branches and a ground terminal. The input end of the switching switch is connected with the body of the second antenna, and each output end of the switching switch is connected with one end of each matching branch, respectively; and the other end of each matching branch is connected with the ground terminal, respectively.

13. The electronic device of claim 12, wherein, The plurality of matching branches comprise a capacitance branch, and the capacitance value of the preset capacitance in the capacitance branch exceeds the preset capacitance value.

14. The electronic device of claim 13, wherein, The switching switch comprises an open state, and in this state, the plurality of matching branches are connected with the body of the second antenna; and the equivalent capacitance of the plurality of matching branches exceeds the preset capacitance value.

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