Antenna and foldable electronic equipment

Abstract

The utility model provides an antenna and foldable electronic equipment, relates to the field of antennas, and is used for solving the problem that a notebook computer with an all-metal shell is narrow in communication bandwidth. Wherein the antenna comprises a connecting antenna section, and a first antenna section and a second antenna section which are electrically connected with the two opposite ends of the connecting antenna section respectively, and the first antenna section and the second antenna section are located on the surfaces of the two opposite sides of the dielectric part respectively. The antenna further comprises a grounding part, one end of the grounding part is electrically connected with a grounding plate of the foldable electronic equipment, and the other end of the grounding part is electrically connected with the first antenna section, the second antenna section or the connecting antenna section. The antenna further comprises a feed part electrically connected with the first antenna section, and the feed part is used for being electrically connected with a radio frequency module of the foldable electronic equipment. The antenna provided by the utility model can support wider bandwidth, can provide larger communication capacity and higher transmission speed, can realize high coverage rate of signals, and improves user experience and working efficiency.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of antennas, and in particular to an antenna and a foldable electronic device. Background Art

[0002] With the advancement of technology, wireless communication technology is widely used in various electronic devices, such as laptops. Electronic devices need to rely on antennas to complete wireless communication with the outside world, and the antenna is closely related to the wireless communication quality of electronic devices.

[0003] For example, a laptop computer mainly includes a keyboard structure and a screen structure, and the keyboard structure and the screen structure are rotatably connected via a rotating shaft. Some laptop computers have a full metal shell. The antenna design of a full metal shell laptop computer is somewhat difficult. Many traditional antennas, such as an inverted-F antenna (IFA) and a monopole, cannot work in a full metal shell laptop computer. In addition, for existing full metal shell laptop computer antennas, their communication bandwidth is usually narrow. Utility Model Content

[0004] The embodiments of the present application provide an antenna and a foldable electronic device for solving the problem of narrow communication bandwidth of a notebook computer with an all-metal shell.

[0005] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, an antenna is provided. The antenna is used for a foldable electronic device, and the foldable electronic device includes a first shell, a second shell, and a rotating shaft connected to the first shell and the second shell respectively. The first shell and the second shell rotate relative to each other through the rotating shaft so that the foldable electronic device switches between a folded state and an unfolded state. When the foldable electronic device is in the unfolded state, the rotating shaft, the first shell and the second shell together form an open slot with an opening. The mounting shell is the first shell or the second shell, and the mounting shell includes a dielectric portion and a main body portion connected to each other, the dielectric portion is located at a position of the main body near the open slot, and the antenna is mounted on the dielectric portion.

[0007] The antenna includes a connecting antenna segment, and a first antenna segment and a second antenna segment electrically connected to opposite ends of the connecting antenna segment, and the first antenna segment and the second antenna segment are respectively located on opposite side surfaces of the dielectric portion. The antenna also includes a grounding portion, one end of which is electrically connected to a ground plate of a foldable electronic device, and the other end of the grounding portion is electrically connected to the first antenna segment, the second antenna segment or the connecting antenna segment. The antenna also includes a feeding portion electrically connected to the first antenna segment, and the feeding portion is used to be electrically connected to a radio frequency module of the foldable electronic device.

[0008] The antenna in this application has a resonance at 2.47GHz in the low frequency band. There are three resonances in the high frequency band, located at 5.34GHz, 6.77GHz and 7.47GHz. In other words, the antenna can cover Wi-Fi 2.4G (2.4GHz to 2.48GHz), Wi-Fi 5G (5.15GHz to 5.85GHz), and Wi-Fi 6E (5.925GHz to 7.125GHz). The antenna can support a wider bandwidth, provide greater communication capacity and faster transmission speed, achieve high signal coverage, and improve user experience and work efficiency, especially in those occasions where high requirements are placed on device performance.

[0009] In a possible implementation of the first aspect, a first via hole penetrating the dielectric portion is provided on the dielectric portion, and the connecting antenna segment passes through the first via hole. The connecting antenna segment passes through the first via hole to achieve installation and fixation of the connecting antenna segment, so that the connecting antenna segment can be stably and reliably connected between the first antenna segment and the second antenna segment. In addition, the connecting antenna segment passes through the first via hole, so that the volume of the antenna is smaller.

[0010] In a possible implementation of the first aspect, the dielectric portion includes a side surface, and a first mounting surface and a second mounting surface respectively connected to opposite sides of the side surface. The first antenna segment is mounted on the first mounting surface to achieve a connection between the first antenna segment and the second shell. The second antenna segment is mounted on the second mounting surface to achieve a connection between the second antenna segment and the second shell. The connecting antenna segment is mounted on the side surface to achieve a connection between the connecting antenna segment and the second shell. The first antenna segment, the connecting antenna segment and the second antenna segment can be formed by bending a metal sheet, reducing the assembly steps between the first antenna segment and the connecting antenna segment, reducing the assembly error between the first antenna segment and the connecting antenna segment, and at the same time, it can also reduce the assembly steps between the second antenna segment and the connecting antenna segment, reducing the assembly steps between the second antenna segment and the connecting antenna segment.

[0011] In a possible implementation of the first aspect, the grounding portion is electrically connected to a position of the first antenna segment near the opening, or the grounding portion is electrically connected to a position of the second antenna segment near the opening. That is, the grounding portion is disposed near an edge of the dielectric portion, which can better excite the floor current of the mounting housing and, at the same time, better match the antenna.

[0012] In a possible implementation of the first aspect, the first antenna segment is arranged in parallel with the second antenna segment, so that the space occupied by the antenna is smaller, and the space of the foldable electronic device is more effectively utilized. In addition, the first antenna segment is arranged in parallel with the second antenna segment, which can also facilitate the electrical connection between the antenna segment and the first antenna segment and the second antenna segment.

[0013] In a possible implementation of the first aspect, the length of the second antenna segment is less than the length of the first antenna segment, and the feeding portion is located outside the orthographic projection area of ​​the second antenna segment of the first antenna segment, so that there is enough space around the feeding portion to facilitate electrical connection of the feeding portion with the radio frequency module of the foldable electronic device, thereby achieving more efficient use of the space of the foldable electronic device.

[0014] In a possible implementation manner of the first aspect, the length of the first antenna segment is L1, 22.4 mm≤L1≤33.6 mm. L1 can be 22.4 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, 31 mm, 32 mm, 33 mm or 33.6 mm.

[0015] In a possible implementation manner of the first aspect, the length of the second antenna segment is L2, 14.32 mm≤L2≤21.48 mm. L2 can be 14.32 mm, 15 mm, 16 mm, 17 mm, 17.9 mm, 18 mm, 19 mm, 20 mm, 21 mm or 21.48 mm.

[0016] In a possible implementation of the first aspect, the depth of the opening groove is L3, 23.52 mm≤L3≤35.28 mm. L3 can be 23.52 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 29.4 mm, 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, 35 mm or 35.28 mm.

[0017] In a possible implementation manner of the first aspect, a width of the first antenna segment is W1, and 0.56 mm≤W1≤0.84 mm. W1 may be 0.56 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, or 0.84 mm.

[0018] In a possible implementation manner of the first aspect, the width of the second antenna segment is W2, 0.4 mm≤W2≤0.6 mm. W2 may be 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm or 0.6 mm.

[0019] In a possible implementation manner of the first aspect, the width of the opening groove is W3, 0.56 mm≤W3≤0.84 mm. W3 can be 0.56 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm or 0.84 mm.

[0020] In a second aspect, a foldable electronic device is also provided. The foldable electronic device includes a hinge, a first shell, a second shell and the antenna as described above.

[0021] The first shell and the second shell rotate relative to each other through the rotating shaft so that the foldable electronic device switches between a folded state and an unfolded state; when the foldable electronic device is in the unfolded state, the rotating shaft, the first shell and the second shell together form an open slot with an opening.

[0022] Since the foldable electronic device provided in the present application includes the antenna of any technical solution of the first aspect above, the two can solve the same technical problem and achieve the same effect.

[0023] In a possible implementation of the second aspect, the foldable electronic device includes two antennas, the two antennas are a first antenna and a second antenna; the first antenna is located on the first shell or the second shell, and the second antenna is located on the first shell or the second shell.

[0024] By setting up two antennas, a 2×2 MIMO system can be formed, which can provide greater communication capacity and faster transmission speed, achieve high signal coverage, and improve user experience and work efficiency, especially in those occasions with high requirements on device performance.

[0025] In a possible implementation manner of the second aspect, the foldable electronic device is a laptop computer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a foldable electronic device having two rotating shafts provided in some embodiments of the present application;

[0027] Figure 2 A schematic diagram of a structure of a foldable electronic device having a rotating shaft provided in some embodiments of the present application;

[0028] Figure 3 A schematic diagram of a foldable electronic device having three rotating shafts provided in some embodiments of the present application;

[0029] Figure 4 A schematic diagram of the structure of an antenna provided in some embodiments of the present application;

[0030] Figure 5 A schematic cross-sectional view of a first via hole in an antenna provided in some embodiments of the present application;

[0031] Figure 6 A schematic cross-sectional view of a first via hole in an antenna provided in some other embodiments of the present application;

[0032] Figure 7 A cross-sectional schematic diagram of an antenna provided in some embodiments of the present application;

[0033] Figure 8 A schematic cross-sectional view of an antenna provided in some other embodiments of the present application;

[0034] Fig. 9 A cross-sectional schematic diagram of an antenna provided in some further embodiments of the present application;

[0035] Fig.10 A schematic diagram of a connection structure between a ground portion and a first antenna segment in an antenna provided in some embodiments of the present application;

[0036] Fig.11 A schematic diagram of the connection structure between the ground portion and the second antenna segment in the antenna provided in some embodiments of the present application;

[0037] Fig.12 A schematic diagram of a connection structure between a ground portion and an antenna segment in an antenna provided in some embodiments of the present application;

[0038] Fig.13 A schematic diagram of a structure in which a first antenna segment and a second antenna segment are parallel in an antenna provided in some embodiments of the present application;

[0039] Fig.14 A cross-sectional schematic diagram of a second via hole in an antenna provided in some embodiments of the present application;

[0040] Fig.15 A schematic cross-sectional view of a second via hole in an antenna provided in some other embodiments of the present application;

[0041] Fig.16 A schematic diagram of the connection structure between the feed part and the lumped element in the antenna provided in some embodiments of the present application;

[0042] Fig.17 A schematic diagram of the structure of a lumped element in an antenna provided in some embodiments of the present application;

[0043] Fig.18 A schematic diagram of the structure of antennas provided in some other embodiments of the present application;

[0044] Fig.19 A schematic diagram of the principle of antennas provided in some embodiments of the present application;

[0045] Fig. 20 A schematic diagram of the evolution process of antennas provided in some embodiments of the present application;

[0046] Fig.21 A schematic diagram of vector quantity distribution at different resonant frequencies during the evolution of an antenna provided in some embodiments of the present application;

[0047] Fig. 22 A schematic diagram of the relationship between the frequency and the port reflection coefficient during the evolution of the antenna provided in some embodiments of the present application;

[0048] Fig.23A schematic diagram of the relationship between different parameters and port reflection coefficients in antennas provided in some embodiments of the present application;

[0049] Fig.24 A graph of the port reflection coefficient corresponding to the antenna when the first shell and the second shell of the antenna provided in some embodiments of the present application are folded at different angles and sizes;

[0050] Fig.25 A three-dimensional radiation pattern of a high-frequency resonant frequency in the antenna of the first stage to the antenna of the third stage provided in some embodiments of the present application;

[0051] Fig.26 A schematic diagram of the electric field amplitude distribution on the 6 GHz ground plane in the antenna of the first stage to the antenna of the third stage provided in some embodiments of the present application;

[0052] Fig. 27 A schematic diagram of vector electric field distribution of different resonances in antennas from the first stage to the third stage provided in some embodiments of the present application;

[0053] Fig.28 A schematic diagram of electric field distribution of different resonances in an antenna in the third stage provided by some embodiments of the present application;

[0054] Fig.29 A schematic diagram of the radiation pattern of the antenna at low frequency resonance provided by some embodiments of the present application;

[0055] Fig.30 A schematic diagram of the electric field amplitude in the low-frequency band of the antenna of the first stage and the antenna of the third stage provided in some embodiments of the present application;

[0056] Fig.31 A schematic diagram of the three-dimensional radiation direction of the antenna at 2.44 GHz and 6 GHz provided in some embodiments of the present application;

[0057] Fig.32 A schematic diagram of the three-dimensional radiation direction of the first antenna and the second antenna in a foldable electronic device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0058] In the embodiments of the present application, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0059] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0060] In some embodiments, the foldable electronic device can be a notebook computer, also known as a portable computer, a handheld computer, a palmtop computer or a laptop computer, which is characterized by a compact body. The notebook computer mainly includes a screen structure and a keyboard structure, and the screen structure and the keyboard structure are rotatably connected by a rotating shaft. The screen structure can be configured to have components such as a display screen, a backlight panel, and an integrated circuit. The keyboard structure can be configured to have components such as an input panel (for example: a keyboard, a touchpad), a computer motherboard, a processor, a hard disk, a universal serial bus interface, etc. The keyboard is not limited to physical buttons in the traditional sense, and the keyboard can also be extended to input components such as a touch panel.

[0061] Laptops can have all-metal casings, which are usually more durable and rugged, and are suitable for business people who need to work in harsh environments. In addition, all-metal casing laptops combined with high-performance antenna systems can ensure that some field technicians with high communication requirements maintain a stable network connection during field service. In addition, in IoT applications, laptops may be used as control centers to monitor and manage various smart devices, and broadband antennas support stable communication with various IoT devices.

[0062] In a notebook computer with a full metal shell, using a common antenna will be greatly affected by the metal shell, causing the antenna performance to deteriorate.

[0063] See also Figure 1 In order to solve the problem of narrow communication bandwidth of a full metal shell laptop computer, the present application provides a foldable electronic device 100. The foldable electronic device can be a laptop computer, a flip phone, a flip game console, a flip electronic dictionary, a flip learning machine, a foldable electronic reader, etc. For the convenience of description, the following examples are all taken as an example of a foldable electronic device being a laptop computer.

[0064] The foldable electronic device 100 may include a first housing 10 , a second housing 20 , and a hinge 30 connected to the first housing 10 and the second housing 20 , respectively.

[0065] For the convenience of the following description, an XYZ coordinate system is established, and the width direction of the second housing 20 in the foldable electronic device 100 is defined as the X-axis direction, the length direction of the second housing 20 is defined as the Y-axis direction, and the thickness direction of the second housing 20 is defined as the Z-axis direction. It can be understood that Figure 1 The foldable electronic device 100 is schematically shown in the figure. The actual shape, size, position and structure of these components are not limited to the following. Figure 1 restrictions.

[0066] The first housing 10 and the second housing 20 can be rotatably connected via a rotating shaft 30, the rotating shaft 30 extends along the Y-axis direction, and the first housing 10 and the second housing 20 can rotate around the rotating shaft 30. With the rotation, the form of the foldable electronic device 100 can switch between a folded state and an unfolded state. The number of the rotating shaft 30 can be one or more.

[0067] The first housing 10 may include a first panel 11, and the second housing 20 may include a second panel 21. One implementation is that when one of the first panel 11 and the second panel 21 is an input panel (e.g., a keyboard panel), the other is an output panel (e.g., a display panel). Another implementation is that both the first panel 11 and the second panel 21 may have both an input panel and an output panel, wherein the input panel may be a touch panel, and the output panel may be a display panel. For example, the first panel 11 and the second panel 21 may be touch screens having both touch and display functions.

[0068] In this embodiment, the first housing 10 may include a screen structure, and the second housing 20 may include a keyboard structure. That is, the first panel 11 is an output panel (eg, a display panel), and the second panel 21 is an input panel (eg, a keyboard panel).

[0069] For convenience in describing the folded state, the unfolded state, and the dynamic switching between the folded state and the unfolded state of the foldable electronic device 100, please refer to Figure 1 , the foldable electronic device 100 can be divided into surface A, surface B, surface C and surface D. Surface A is the side of the first shell 10 facing away from the second shell 20, surface B is the side of the first shell 10 close to the second shell 20 (for example, the side where the first panel 11 is located), surface C is the side of the second shell 20 close to the first shell 10 (for example, the side where the second panel 21 is located), and surface D is the side of the second shell 20 facing away from the first shell 10.

[0070] The foldable electronic device 100 can bring the B surface and the C surface closer to each other (hereinafter referred to as inward folding) through the hinge 30, so that the first housing 10 and the second housing 20 are in a folded state. At this time, the A surface and the D surface are exposed to the outside, and the B surface and the C surface can be partially or completely in contact.

[0071] The foldable electronic device 100 can also move the B surface and the C surface away from each other (hereinafter referred to as outward folding) through the hinge 30, so that the first housing 10 and the second housing 20 are in another folded state. At this time, the B surface and the C surface are exposed to the outside, and the A surface and the D surface can be partially or completely in contact.

[0072] The foldable electronic device 100 can also be folded outward or inward so that the first shell 10 and the second shell 20 are in an unfolded state. The unfolded state may refer to the angle between the B surface and the C surface of the foldable electronic device 100 being greater than a specified angle, and the specified angle may be 30°, 40°, 45°, 50°, 60°, 70°, 80° or 90°. At this time, the first panel 11 and the second panel 21 of the B surface and the C surface can be fully exposed to the user, and human-computer interaction is convenient. The unfolded state may include multiple open positions, which can be defined by the angle between the B surface and the C surface, such as 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 180°, etc.

[0073] When the foldable electronic device 100 is in the unfolded state, an opening slot 40 having an opening is formed between the hinge 30 , the first shell 10 and the second shell 20 . The opening slot 40 has an outward opening and extends along the Y-axis direction.

[0074] Specifically, the side wall of the first housing 10 close to the second housing 20, the side wall of the second housing 20 close to the first housing 10, and the rotating shaft 30 together form an open groove 40. The rotating shaft 30 serves as the groove bottom of the open groove 40, and the side wall of the first housing 10 close to the second housing 20 and the side wall of the second housing 20 close to the first housing 10 serve as two groove walls of the open groove 40.

[0075] See also Figure 1 The number of the rotating shafts 30 can be two, and the two rotating shafts 30 are arranged at intervals along the Y-axis direction. Moreover, the two rotating shafts 30 are arranged at the middle position of the second housing 20 along the Y-axis direction, and are spaced a certain distance from the edge of the second housing 20 along the Y-axis direction, rather than being arranged at the edge position of the second housing 20 along the Y-axis direction. A long slot 31 is formed between the two rotating shafts 30, and the long slot 31 is a slot closed at both ends, and the long slot 31 has no opening. An open slot 40 is formed at one end of the two rotating shafts 30 away from the long slot 31. In this case, the number of the open slots 40 is two.

[0076] See also Figure 2The number of the rotating shaft 30 can be one, and the rotating shaft 30 is arranged at the middle position of the second housing 20 along the Y-axis direction, and is spaced a certain distance from the edge of the second housing 20 along the Y-axis direction, rather than being arranged at the edge position of the second housing 20 along the Y-axis direction. Open grooves 40 are formed at both ends of the rotating shaft 30, and in this case, the number of the open grooves 40 is also two.

[0077] See also Figure 3 The number of the rotating shaft 30 may also be multiple. Figure 3 There are three central rotating shafts 30. The multiple rotating shafts 30 are arranged at intervals along the Y-axis direction, and the multiple rotating shafts 30 are all arranged at the middle position of the second shell 20 along the Y-axis direction, and are spaced a certain distance from the edge of the second shell 20 along the Y-axis direction. The two rotating shafts 30 at the outermost ends, the first shell 10 and the second shell 20 together form an open groove 40, and at this time, the number of the open grooves 40 is also two.

[0078] In some embodiments, the mounting shell may be a first shell 10 or a second shell 20, and the mounting shell includes a dielectric portion 291 and a main body 292 connected to each other, the dielectric portion 291 is located at a position of the main body 292 close to the opening slot 40, and the antenna 50 is mounted on the dielectric portion 291. That is, the antenna 50 can be mounted on the first shell 10 or on the second shell 20. In this embodiment, for the convenience of description, the mounting shell is described as the second shell 20. The dielectric portion 291 is made of a non-conductive material. If the antenna 50 is mounted on a conductive metal part of the mounting shell, resonance cannot be generated, and radiation cannot be generated. Therefore, a dielectric portion 291 is provided on the mounting shell, and the antenna 50 is mounted on the dielectric portion 291. The main body 292 can be made of a non-conductive material or a conductive material. When the foldable electronic device is a laptop computer with a full metal shell, the main body 292 is made of a conductive metal material.

[0079] See also Figure 4 , the antenna 50 may include a connecting antenna section 53, and a first antenna section 51 and a second antenna section 52 electrically connected to opposite ends of the connecting antenna section 53. That is, the first antenna section 51, the connecting antenna section 53 and the second antenna section 52 are electrically connected in sequence. The first antenna section 51 and the second antenna section 52 both extend along the Y-axis direction, and the connecting antenna section 53 extends along the Z-axis direction. The first antenna section 51 and the second antenna section 52 are respectively located on opposite sides of the dielectric portion 291.

[0080] The antenna 50 may also include a grounding portion 54, one end of which may be electrically connected to the grounding plate of the foldable electronic device 100, and the other end of which may be electrically connected to the first antenna segment 51, the second antenna segment 52, or the connecting antenna segment 53. The antenna 50 is electrically connected to the grounding plate of the foldable electronic device 100 by setting the grounding portion 54. Specifically, the grounding plate of the foldable electronic device 100 may be set on the surface of the second shell 20, may be set inside the second shell 20, or may be set outside the second shell 20 and electrically connected to the grounding portion 54 through a wire. The embodiment of the present application does not limit the position of the grounding plate and the connection method between the grounding plate and the grounding portion 54.

[0081] When the foldable electronic device 100 is a notebook computer with a full metal shell, the mounting shell includes a dielectric portion 291 and a main body portion 292 connected to each other, the main body portion 292 is made of a conductive metal material, and the main body portion 292 is electrically connected to the grounding plate of the foldable electronic device 100. At this time, the grounding portion 54 can be directly electrically connected to the main body portion 292 to achieve grounding.

[0082] The antenna 50 may further include a feeding portion 55 electrically connected to the first antenna segment 51 , and the feeding portion 55 is used to be electrically connected to a radio frequency module of the foldable electronic device 100 .

[0083] One end of the feeder 55 is electrically connected to the first antenna segment 51, and the other end of the feeder 55 is used to be electrically connected to the RF module of the foldable electronic device 100. The RF module of the foldable electronic device 100 can be directly fed or coupled to the feeder 55 through a feeder line. That is, the RF signal output by the RF module is received by the feeder 55, so that the antenna 50 radiates the signal outward.

[0084] In some embodiments, see Figure 5 The dielectric portion 291 is provided with a first through hole 22, which penetrates the dielectric portion 291 along the Z-axis direction. The connecting antenna segment 53 passes through the first through hole 22, so that the connecting antenna segment 53 is installed and fixed, so that the connecting antenna segment 53 can be stably and reliably connected between the first antenna segment 51 and the second antenna segment 52. In addition, the connecting antenna segment 53 passes through the first through hole 22, so that the volume of the antenna 50 is smaller.

[0085] Specifically, the first via hole 22 may be subjected to hole metallization, which refers to plating a layer of conductive metal material on the hole wall through chemical plating, electroplating or other processes in the hole to achieve interconnection between the top layer and the bottom layer of the hole. By performing hole metallization on the first via hole 22, the metal on the hole wall of the first via hole 22 is used as the connecting antenna segment 53, so that the connection between the connecting antenna segment 53 and the hole wall of the first via hole 22 is tighter and more reliable.

[0086] It should be noted that the second shell 20 has a hollow cavity 28. When the first via hole 22 is metallized and the metal on the hole wall of the first via hole 22 is used as the connecting antenna segment 53, the first via hole 22 is located on the side wall of the dielectric portion 291 on the second shell 20. The first via hole 22 passes through the side wall of the dielectric portion 291, the first antenna segment 51 covers one end of the first via hole 22 and is electrically connected to the connecting antenna segment 53, and the second antenna segment 52 covers the other end of the first via hole 22 and is electrically connected to the connecting antenna segment 53.

[0087] In other embodiments, please refer to Figure 6 The first via 22 may include a first connecting segment 221, and a second connecting segment 222 and a third connecting segment 223 respectively connected to both ends of the first connecting segment 221, the first connecting segment 221 passes through the side wall of the dielectric portion 291, the second connecting segment 222 passes through the first antenna segment 51, and the third connecting segment 223 passes through the second antenna segment 52.

[0088] like Figure 6 As shown, the first antenna segment 51 can be directly connected to the C surface of the dielectric portion 291, and the second antenna segment 52 can be directly connected to the D surface of the dielectric portion 291, so that the first antenna segment 51 and the second antenna segment 52 are protruded on the C surface and the D surface of the dielectric portion 291.

[0089] See also Figure 7 The C-surface of the dielectric portion 291 may be provided with a first mounting groove 241, and the first antenna segment 51 may be embedded in the first mounting groove 241, so that the upper surface of the first antenna segment 51 is flush with the C-surface of the dielectric portion 291. By embedding the first antenna segment 51 in the first mounting groove 241, the contact area between the first antenna segment 51 and the dielectric portion 291 is increased. In addition, the groove wall of the first mounting groove 241 may limit the first antenna segment 51, so that the connection between the first antenna segment 51 and the dielectric portion 291 is more stable and reliable.

[0090] A second mounting groove 242 may also be provided on the D surface of the dielectric portion 291, and the second antenna segment 52 may be embedded in the second mounting groove 242, so that the lower surface of the second antenna segment 52 is flush with the D surface of the dielectric portion 291. By embedding the second antenna segment 52 in the second mounting groove 242, the contact area between the second antenna segment 52 and the dielectric portion 291 is increased. In addition, the groove wall of the second mounting groove 242 may limit the second antenna segment 52, so that the connection between the second antenna segment 52 and the dielectric portion 291 is more stable and reliable.

[0091] Both ends of the first via hole 22 may be communicated with the first mounting groove 241 and the second mounting groove 242 respectively, so that the connecting antenna segment 53 can pass through the first via hole 22 to be electrically connected to the first antenna segment 51 and the second antenna segment 52 .

[0092] In some embodiments, see Figure 8 The dielectric portion 291 may include a side surface 27, and a first mounting surface 25 and a second mounting surface 26 connected to opposite sides of the side surface 27, that is, the first mounting surface 25, the side surface 27, and the second mounting surface 26 are connected in sequence. The side surface 27 extends along the Z-axis direction, and the first mounting surface 25 and the second mounting surface 26 extend along the plane where the X-axis and the Y-axis are located. The first mounting surface 25 and the second mounting surface 26 are connected to opposite sides of the side surface 27, respectively. The first mounting surface 25 is the aforementioned C surface, and the second mounting surface 26 is the aforementioned D surface.

[0093] The first antenna segment 51 is mounted on the C surface to achieve the connection between the first antenna segment 51 and the dielectric portion 291. The second antenna segment 52 is mounted on the D surface to achieve the connection between the second antenna segment 52 and the dielectric portion 291. The connecting antenna segment 53 extends along the Z-axis direction and is mounted on the side 27 to achieve the connection between the connecting antenna segment 53 and the dielectric portion 291. The first antenna segment 51, the connecting antenna segment 53 and the second antenna segment 52 can be formed by bending a metal sheet, which reduces the assembly steps between the first antenna segment 51 and the connecting antenna segment 53, reduces the assembly error between the first antenna segment 51 and the connecting antenna segment 53, and at the same time, can also reduce the assembly steps between the second antenna segment 52 and the connecting antenna segment 53, and reduce the assembly steps between the second antenna segment 52 and the connecting antenna segment 53.

[0094] like Figure 8 As shown, the first antenna segment 51 can be directly connected to the C surface, the second antenna segment 52 can be directly connected to the D surface, and the connecting antenna segment 53 can be directly connected to the side surface 27, so that the first antenna segment 51, the second antenna segment 52 and the connecting antenna segment 53 are protruded on the surface of the dielectric portion 291.

[0095] See also Fig. 9 , a third mounting groove 243 may also be provided on the dielectric portion 291, and the connecting antenna segment 53 may be embedded in the third mounting groove 243, so that the connecting antenna segment 53 is flush with the side surface 27. By embedding the connecting antenna segment 53 in the third mounting groove 243, the contact area between the connecting antenna segment 53 and the dielectric portion 291 is increased. In addition, the groove wall of the third mounting groove 243 may limit the connecting antenna segment 53, so that the connection between the connecting antenna segment 53 and the dielectric portion 291 is more stable and reliable.

[0096] In some embodiments, see Fig.10The grounding portion 54 can be electrically connected to the opening of the first antenna segment 51 near the opening slot 40. That is to say, the grounding portion 54 is arranged near the edge of the dielectric portion 291 along the Y-axis direction, which can better excite the floor current of the second shell 20 and at the same time, make the matching of the antenna 50 better.

[0097] In some embodiments, see Fig.11 The grounding portion 54 can be electrically connected to the opening of the second antenna segment 52 near the opening slot 40. That is to say, the grounding portion 54 is arranged near the edge of the dielectric portion 291 along the Y-axis direction, which can better excite the floor current of the second shell 20 and at the same time, make the matching of the antenna 50 better.

[0098] In some embodiments, see Fig.12 The grounding portion 54 can be electrically connected to the connecting antenna segment 53, and the grounding portion 54 is arranged close to the edge of the dielectric portion 291 along the Y-axis direction, which can better excite the floor current of the second housing 20 and make the matching of the antenna 50 better. Correspondingly, the connecting antenna segment 53 can also be arranged close to the edge of the dielectric portion 291 along the Y-axis direction to reduce the distance between the grounding portion 54 and the connecting antenna segment 53.

[0099] In some embodiments, see Fig.13 , the first antenna segment 51 is arranged in parallel with the second antenna segment 52. The first antenna segment 51 and the second antenna segment 52 both extend along the Y-axis direction, so that the space occupied by the antenna 50 is smaller, and the space of the foldable electronic device 100 is more effectively utilized. In addition, the first antenna segment 51 and the second antenna segment 52 are arranged in parallel, which can also facilitate the electrical connection of the antenna segment 53 with the first antenna segment 51 and the second antenna segment 52.

[0100] Based on the above examples, please refer to Fig.14 , the length of the second antenna segment 52 may be smaller than the length of the first antenna segment 51, and the feeding portion 55 is located outside the orthographic projection area of ​​the second antenna segment 52 on the first antenna segment 51. In other words, the feeding portion 55 is located in an area where the orthographic projections of the first antenna segment 51 and the second antenna segment 52 along the Z-axis direction do not overlap, so that there is enough space around the feeding portion 55, which facilitates the electrical connection between the feeding portion 55 and the radio frequency module of the foldable electronic device 100, thereby achieving more effective use of the space of the foldable electronic device 100.

[0101] In some embodiments, see Fig.14 The antenna 50 also includes a lumped element 60 , a second via hole 23 is opened on the dielectric portion 291 , one end of the feeding portion 55 is electrically connected to the first antenna segment 51 , and the other end of the feeding portion 55 passes through one end of the second via hole 23 and is electrically connected to the lumped element 60 .

[0102] The second via 23 penetrates the shell where the C surface of the dielectric portion 291 is located along the Z-axis direction, and the top end of the feeding portion 55 is electrically connected to the first antenna segment 51. The bottom end of the feeding portion 55 passes through the second via 23 and is electrically connected to the lumped element 60, and the lumped element 60 is located in the hollow cavity 28 at the dielectric portion 291. By passing the feeding portion 55 through the second via 23, the feeding portion 55 is installed and fixed, so that the feeding portion 55 can be stably and reliably connected between the first antenna segment 51 and the lumped element 60. In addition, the feeding portion 55 passes through the second via 23, so that the volume of the antenna 50 is smaller.

[0103] Specifically, the second via hole 23 may be subjected to hole metallization, which refers to plating a layer of conductive metal material on the hole wall through chemical plating, electroplating or other processes in the hole to achieve interconnection between the top layer and the bottom layer of the hole. By performing hole metallization on the second via hole 23, the metal on the hole wall of the second via hole 23 is used as the feeding part 55, so that the connection between the feeding part 55 and the hole wall of the second via hole 23 is tighter and more reliable.

[0104] In other embodiments, see Fig.15 The second via 23 may include a first connecting section 231, and a second connecting section 232 and a third connecting section 233 respectively connected to the two ends of the first connecting section 231, the first connecting section 231 passes through the shell where the C-surface of the dielectric portion 291 is located, the second connecting section 232 passes through the first antenna section 51, and the third connecting section 233 passes through the lumped element 60.

[0105] In some embodiments, see Fig.16 In order to improve impedance matching, the lumped element 60 may include an inductor 62 and a capacitor 61, and the capacitor 61 and the inductor 62 are electrically connected to the feed part 55. One implementation is that the capacitor 61 can be connected in series with the feed part 55, and the inductor 62 can be connected in parallel with the feed part 55. Another implementation is that the capacitor 61 can be connected in parallel with the feed part 55, and the inductor 62 can be connected in series with the feed part 55. The lumped element 60 includes a capacitor 61 and an inductor 62, which is convenient for adjusting the impedance and reducing the port reflection coefficient. Due to the added capacitor 61 and inductor 62, a part of the original floor current will flow through the branch of the lumped element 60, thereby changing the impedance and reducing the port reflection coefficient, so that most of the incident energy is transmitted to the antenna 50 for transmission, and better matching is achieved.

[0106] In some embodiments, see Fig.17A connecting piece 70 is connected between the feeding part 55 and the lumped element 60. The connecting piece 70 includes a first connecting part 71, a second connecting part 72 and a third connecting part 73. The first connecting part 71 is electrically connected to the feeding part 55, the second connecting part 72 is electrically connected to the capacitor 61, and the third connecting part 73 is electrically connected to the inductor 62. The connecting piece 70 facilitates the electrical connection between the feeding part 55 and the capacitor 61, and also facilitates the electrical connection between the feeding part 55 and the inductor 62, so that the feeding part 55 can be stably and reliably electrically connected to the lumped element 60, thereby improving the stability and reliability of the antenna 50.

[0107] In other embodiments, the lengths of the first antenna segment 51 and the second antenna segment 52 in the extension direction of the opening slot 40 may be equal, and the lumped element 60 may be installed in the second via hole 23, so that the volume of the antenna 50 is smaller.

[0108] In some embodiments, see Fig.18 The length of the first antenna segment 51 along the Y-axis direction is L1, 22.4 mm≤L1≤33.6 mm. L1 can be 22.4 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, 31 mm, 32 mm, 33 mm or 33.6 mm.

[0109] In some embodiments, see Fig.18 The length of the second antenna segment 52 along the Y axis is L2, 14.32 mm ≤ L2 ≤ 21.48 mm. L2 can be 14.32 mm, 15 mm, 16 mm, 17 mm, 17.9 mm, 18 mm, 19 mm, 20 mm, 21 mm or 21.48 mm.

[0110] In some embodiments, see Fig.18 The depth of the opening groove 40 along the Y-axis direction is L3, 23.52mm≤L3≤35.28mm. L3 can be 23.52mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 29.4mm, 30mm, 31mm, 32mm, 33mm, 34mm, 35mm or 35.28mm.

[0111] In some embodiments, see Fig.18 , along the Y-axis direction, the length from the feeding portion 55 to the edge of the dielectric portion 291 is L4, 16.48 mm ≤ L4 ≤ 24.72 mm. L4 can be 16.48 mm, 17 mm, 18 mm, 19 mm, 20 mm, 20.6 mm, 21 mm, 22 mm, 23 mm, 24 mm, or 24.72 mm.

[0112] In some embodiments, see Fig.18The length of the grounding portion 54 along the X-axis direction is L5, 1.12 mm ≤ L5 ≤ 1.68 mm. L5 can be 1.12 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm or 1.68 mm.

[0113] In some embodiments, see Fig.18 The width of the first antenna segment 51 along the X-axis direction is W1, 0.56 mm≤W1≤0.84 mm. W1 can be 0.56 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm or 0.84 mm.

[0114] In some embodiments, see Fig.18 The width of the second antenna segment 52 along the X-axis direction is W2, 0.4 mm≤W2≤0.6 mm. W2 can be 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm or 0.6 mm.

[0115] In some embodiments, see Fig.18 The width of the opening groove 40 along the X-axis direction is W3, 0.56 mm≤W3≤0.84 mm. W3 can be 0.56 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm or 0.84 mm.

[0116] In some embodiments, see Fig.18 The length of the grounding portion 54 along the Y-axis direction is W4, 0.4 mm ≤ W4 ≤ 0.6 mm. W4 can be 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm or 0.6 mm.

[0117] In some embodiments, see Fig.18 , along the X-axis direction, the distance between the first housing 10 and the end of the grounding portion 54 is W5, 3.76 mm ≤ W5 ≤ 5.64 mm. W5 can be 3.76 mm, 3.8 mm, 3.9 mm, 4.0 mm, 4.0 mm, 4.1 mm, 4.2 mm, 4.3 mm, 4.4 mm, 4.5 mm, 4.6 mm, 4.7 mm, 4.8 mm, 4.9 mm, 5.0 mm, 5.1 mm, 5.2 mm, 5.3 mm, 5.4 mm, 5.5 mm, 5.6 mm or 5.64 mm.

[0118] See also Fig.18 In some embodiments, L1=28mm, L2=17.9mm, L3=29.4mm, L4=20.6mm, L5=1.4mm, W1=0.7mm, W2=0.5mm, W3=0.7mm, W4=0.5mm, W5=4.7mm.

[0119] The following is an introduction to the working principle of the antenna.

[0120] See also Fig.19 As shown in Figures (a), (b) and (c), the working principle of the antenna proposed in the embodiment of the present application can be explained as follows: the resonance of the resonator in the open slot 40 with an opening excites the current in the open slot 40, the first shell 10 and the second shell 20. Fig.19 As shown in Figure (a), in the low frequency band, the wavelength is relatively long and the electric field E 1 is established across the opening slot 40, the electric field E 1 The direction is along the -X direction. The λ / 4 mode of the open slot 40 is excited, and the current I 1 The direction is along the edge of the opening slot 40. A port is connected between the first shell 10 and the second shell 20 to effectively excite the floor edge current I on the first shell 10 and the second shell 20. 2 And, the floor edge current I on the first shell 10 and the second shell 20 2 The direction is the same, Fig.19 The (a) figure in the figure is upward. The direction of the electromagnetic wave radiated by the antenna using the opening slot 40 is to propagate to the upper and lower sides of the opening slot 40.

[0121] like Fig.19 As shown in Figure (b), in the high frequency band, the wavelength is relatively short, the high-order mode of the open slot 40 will be excited, and a traveling wave will appear in the open slot 40. The current will flow from the open slot 40 to the edge of the first shell 10 and the second shell 20 in the form of a traveling wave. The traveling wave currents at the edges of the first shell 10 and the second shell 20 propagate in opposite directions and radiate a large amount of energy. Specifically, from Fig.19 As can be seen from Figure (b), the current I 1 With current I 2 The direction is opposite, the current I 2 With current I 3 The direction is opposite, the current I 3 With current I 4 The direction is opposite, the current I 5 With current I 1 The direction is opposite, the current I 5 With current I 6 The direction is opposite, the current I 6 With current I 7 The direction of the electric field E is opposite. 1 is established across the opening slot 40, the electric field E 1 The direction is along the -X direction.

[0122] At the opening of the opening slot 40, due to the discontinuity of the right-angled corners of the first shell 10 and the second shell 20, radiation similar to the electric field radiation of the Vivaldi wide-band microstrip antenna can be generated. The Vivaldi wide-band antenna is a slot microstrip antenna that uses a slot structure with a gradient opening slot shape to control electromagnetic waves to radiate electromagnetic energy from one end of the slot to the open end. An electric field E is formed at the opening of the opening slot 40. 2 , E 2 The direction is in an arc shape from the second housing 20 to the first housing 10. The radiation effect of the equivalent magnetic flux in the open slot 40 is very good because the radiation port of the opening is large enough.

[0123] In the high frequency band, since the current at the floor edges of the first shell 10 and the second shell 20 is in the form of a traveling wave, if the current at the floor edges of the first shell 10 and the second shell 20 can be well excited, a very wide bandwidth can be obtained.

[0124] However, the open slot 40 will limit the bandwidth, because when the length of the open slot 40 is an integral multiple of a half wavelength, the port is equivalent to a short circuit. In fact, it is not allowed to bridge the port between the first shell 10 and the second shell 20.

[0125] like Fig.19 As shown in Figure (c), the antenna 50 is set at a position near the opening slot 40 of the second shell 20. The antenna 50 can act as a resonator to couple the energy of the resonator to the first shell 10 and the second shell 20, thereby exciting the floor current on the first shell 10 and the second shell 20. The direction of the electric field at low frequency is similar to Fig.19 (a) Figure 1 The direction of the electric field at high frequency is Fig.19 (b) Figure 1 To.

[0126] The following is an introduction to the four-stage evolution of the antenna with respect to the position of the opening slot.

[0127] See also Fig. 20 Figures (a), (b), (c) and (d) show the evolution of the antenna in four stages. In order to better observe the resonant mode of the antenna, Fig. 20 In Figures (a), (b), (c) and (d), the angle between the first shell 10 and the second shell 20 is 180°, and the dimensions of the first shell 10 and the second shell 20 are both 150 mm×150 mm.

[0128] like Fig. 20 As shown in FIG. 2( a ), in the first stage, the L-shaped antenna 80 is mounted on one side of the dielectric portion 291 of the second housing 20 , and the floor current of the second housing 20 is excited by the L-shaped antenna 80 .

[0129] like Fig. 20 As shown in FIG. 1( b ), in the second stage, an inverted-F antenna 90 (IFA) is formed. The inverted-F antenna 90 may include a feeding point 91, and the feeding point 91 is used to electrically connect to the radio frequency module of the foldable electronic device.

[0130] like Fig. 20 As shown in FIG. (c), in the third stage, the antenna 50 may include a first antenna segment 51, a second antenna segment 52, a connecting antenna segment 53, a grounding portion 54 and a feeding portion 55, and the second antenna segment 52 is electrically connected to the first antenna segment 51 through the connecting antenna segment 53. One end of the grounding portion 54 may be electrically connected to the main body 292, the main body 292 is electrically connected to the ground plate of the foldable electronic device, and the other end of the grounding portion 54 may be electrically connected to the first antenna segment 51. The feeding portion 55 is electrically connected to the first antenna segment 51, and the feeding portion 55 is used to be electrically connected to the RF module of the foldable electronic device 100.

[0131] like Fig. 20 As shown in FIG. 5( d ), in the fourth stage, the lumped element 60 is electrically connected to the feeding portion 55 to perform low frequency band matching.

[0132] See also Fig.21 Figures (a), (b), (c), (d), (e), (f) and (g) show the vector current distribution of the antenna resonant frequency at different stages. Fig.21 In Figures (a), (b), (c), (d), (e), (f) and (g), the solid lines with arrows indicate the direction of current.

[0133] In the first stage L-type antenna 80, as Fig.21 As shown in FIG. (a) in FIG. 1 , there is a 2.2 GHz resonance in the low frequency band, and at this time, the low frequency of the L-shaped antenna 80 is in the λ / 4 mode. Fig.21 As shown in FIG. 8( b ), in the high frequency band, there is a resonance at 6.43 GHz, and at this time, the high frequency of the L-shaped antenna 80 is in the 3λ / 4 mode.

[0134] In the second-stage inverted-F antenna 90, there is no resonance in the low frequency band. Fig.21 As shown in FIG. 1( c ), in the high frequency band, there is a resonance at 5.72 GHz. At this time, the high frequency of the inverted-F antenna 90 is in the 3λ / 4 mode.

[0135] In the third stage antenna 50, there are four resonances in total. Fig.21As shown in FIG. 2( d ), there is a resonance at 2.47 GHz in the low frequency band, and at this time, the low frequency of the overlapping part of the orthographic projections of the first antenna segment 51 and the second antenna segment 52 on the dielectric portion 291 is in the λ / 2 mode. The first antenna segment 51 and the second antenna segment 52 are arranged in parallel, so that the overlapping part of the orthographic projections of the first antenna segment 51 and the second antenna segment 52 on the dielectric portion 291 can be maximized, so that the resonance of the antenna 50 in the λ / 2 mode in the low frequency band is better.

[0136] like Fig.21 As shown in FIG. 5( e ), there is a resonance at 5.34 GHz in the high frequency band, and the antenna 50 is in the 3λ / 4 mode like an inverted F antenna. The main current on the antenna 50 is on the first antenna segment 51, while the current on the second antenna segment 52 is very small. Therefore, the second antenna segment 52 acts as a load at the resonance of 5.34 GHz.

[0137] like Fig.21 As shown in FIG. 5( f ), at the high frequency band of 6.77 GHz, the antenna 50 is in the 3λ / 2 mode, and both the first antenna segment 51 and the second antenna segment 52 have strong currents.

[0138] like Fig.21 As shown in FIG. 5( g ), at the high frequency band of 7.47 GHz, the antenna 50 is in the 2λ mode, and both the first antenna segment 51 and the second antenna segment 52 have strong currents.

[0139] The mode of the antenna 50 in the fourth stage is the same as that of the antenna 50 in the third stage, so the current distribution of the antenna 50 in the fourth stage is not repeatedly shown.

[0140] See also Fig. 22 , Fig. 22 The horizontal axis is the frequency, and its unit is GHz. Fig. 22 The ordinate in is the reflection coefficient of the S11 port, S11 = reflected energy / total input energy, and its unit is dB. If S11≤-10dB, it means that most (more than 90%) of the incident energy is transmitted to the antenna for transmission, which means that the matching is good.

[0141] from Fig. 22 It can be seen that the first-stage L-shaped antenna has a 2.2GHz resonance in the low frequency band and a 6.43GHz resonance in the high frequency band. Although there is resonance in the high frequency band, the bandwidth of the first-stage L-shaped antenna is too narrow (6.12GHz to 6.63GHz). Therefore, it cannot fully cover the high frequency band.

[0142] The second-stage inverted F antenna has no resonance in the low frequency band, but has a resonance at 5.72 GHz in the high frequency band. The 5.72 GHz resonance bandwidth is relatively wide (4.88 GHz to 6.16 GHz), but it is not enough to cover the Wi-Fi 5G (5.15 to 5.85 GHz) and Wi-Fi 6E (5.925 to 7.125 GHz) bands.

[0143] The third-stage antenna has a resonance at 2.47 GHz in the low frequency band. There are three resonances in the high frequency band, located at 5.34 GHz, 6.77 GHz and 7.47 GHz. In other words, in the third-stage antenna, the antenna can cover Wi-Fi 2.4G (2.4 GHz to 2.48 GHz), Wi-Fi 5G (5.15 GHz to 5.85 GHz), and Wi-Fi 6E (5.925 GHz to 7.125 GHz). The antenna can support wider bandwidth, provide greater communication capacity and faster transmission speed, achieve high signal coverage, and improve user experience and work efficiency, especially in those occasions with high requirements for equipment performance and reliability.

[0144] The resonant frequency of the fourth-stage antenna is similar to that of the third-stage antenna, with one resonance in the low-frequency band and three resonances in the high-frequency band. The fourth-stage antenna connects the lumped element to the feed section, has a lower port reflection coefficient, better matching in the low-frequency band, and most of the incident energy is transferred to the antenna for transmission.

[0145] See also Fig.23 Figures (a), (b), (c) and (d) in Fig.23 Figures (b), (c) and (d) show the port reflection coefficients of the antenna in the third stage under different L1, L2 and L3 conditions. Fig.23 The dashed ovals in (b), (c), and (d) represent the same pattern with different parameter values. Fig.23 In Figure (a), L1 is the length of the first antenna segment 51 along the Y-axis direction, L2 is the length of the second antenna segment 52 along the Y-axis direction, and L3 is the length of the opening slot 40 along the Y-axis direction.

[0146] Please refer to Fig.21 As shown in FIG. (d) of FIG. 1 , the current of the antenna 50 in the low-frequency λ / 2 mode in the third stage is mainly concentrated on the overlapping part of the orthographic projection of the first antenna segment 51 and the second antenna segment 52 on the dielectric portion 291. Fig.23 As can be seen from Figure (b) in the figure, in the low frequency band, changing the length of L1 has little effect on the low frequency λ / 2 mode. Fig.23As can be seen from Figure (c), the increase in L2 causes the resonant frequency of the third-stage antenna in the low-frequency band λ / 2 mode to decrease.

[0147] Please refer to Fig.21 In Figure (e), in the 3λ / 4 mode in the high frequency band of the antenna 50 in the third stage, the current is mainly in the first antenna segment 51, while the current in the second antenna segment 52 is less. Therefore, changing the length of L1 will affect the 3λ / 4 mode in the high frequency band, while changing the length of L2 will have a smaller effect on the 3λ / 4 mode in the high frequency band. Fig.23 As can be seen from Figure (b), the increase in L1 leads to a decrease in the resonant frequency of the 3λ / 4 mode of the third-stage antenna. Fig.23 As can be seen from Figure (c), changing the length of L2 has little effect on the 3λ / 4 mode in the high frequency band.

[0148] Please refer to Fig.21 In Figure (f), in the 3λ / 2 mode in the high frequency band of the antenna 50 in the third stage, there are strong currents in the first antenna segment 51 and the second antenna segment 52. Therefore, changing the length of L1 and L2 will affect the 3λ / 2 in the high frequency band. Fig.23 As can be seen from Figure (b), the increase in L1 leads to a decrease in the resonant frequency of the 3λ / 2 mode of the third-stage antenna. Fig.23 As can be seen from Figure (c), the increase in L2 leads to a decrease in the resonant frequency of the 3λ / 2 mode of the third-stage antenna.

[0149] Please refer to Fig.21 In Figure (g), in the 2λ mode in the high frequency band of the antenna 50 in the third stage, there are strong currents in the first antenna segment 51 and the second antenna segment 52. Therefore, changing the length of L1 and L2 will affect the 3λ / 2 in the high frequency band. Fig.23 As can be seen from Figure (b), the increase in L1 leads to an increase in the resonant frequency of the 2λ mode of the third-stage antenna. In addition, when L1 = 26 mm, the 2λ mode of the antenna disappears due to the degradation of impedance matching, and there is no resonance at 7.47 GHz. Fig.23 As can be seen from Figure (c), the increase in L2 leads to an increase in the resonant frequency of the 2λ mode of the third-stage antenna.

[0150] like Fig.23 As shown in FIG. 5( d ) , in the low-frequency band and the high-frequency band of the antenna in the third stage, changing the length of L3 does not affect the resonant frequency, indicating that the resonant mode of the open slot 40 is excluded from the working frequency band.

[0151] The resonant frequencies of the third-stage antenna are 5.34 GHz and 6.77 GHz, which completely cover the high frequency band of Wi-Fi 5G. In the low frequency band, there is resonance at 2.47 GHz, but the port reflection coefficient is high. Therefore, the fourth-stage antenna adds a lumped element and electrically connects it to the feed part to assist impedance matching in the low frequency band and reduce the port reflection coefficient.

[0152] In order to better observe the resonant mode of the antenna, the above process was tested under the condition that the angle between the first shell and the second shell was 180° and the dimensions of the first shell and the second shell were both 150mm×150mm. Now, according to the actual size of the laptop computer, the first shell and the second shell are both 304mm×227mm for testing. Fig.24 , Fig.24 The first curve in is the port reflection coefficient when the first shell and the second shell are of a test size (150 mm×150 mm) and the angle between the first shell and the second shell is 180°. Fig.24 The second curve in is the port reflection coefficient when the first shell and the second shell are of a test size (150 mm×150 mm) and the angle between the first shell and the second shell is 110°. Fig.24 The third curve in FIG. 1 is the port reflection coefficient when the first shell and the second shell are of actual size (304 mm×227 mm) and the angle between the first shell and the second shell is 180°. Fig.24 The fourth curve in is the port reflection coefficient when the first shell and the second shell are of actual size (304mm×227mm) and the angle between the first shell and the second shell is 110°. Fig.24 It can be seen that the port reflection coefficient when the first shell and the second shell are the test size (150mm×150mm) is almost the same as the port reflection coefficient when the first shell and the second shell are the actual size (304mm×227mm). In addition, the port reflection coefficient when the angle between the first shell and the second shell is 180° is almost the same as the port reflection coefficient when the angle between the first shell and the second shell is 110°. Therefore, the above analysis is still valid for the actual size of the laptop.

[0153] The antenna has different radiation or receiving capabilities in different directions in space, which is the directivity of the antenna. Generally, the lower the directivity, the more uniform the coverage of the pattern in space. The antenna on the laptop needs to have the lowest directivity possible, so some methods are needed to reduce the directivity of the antenna.

[0154] See also Fig.25 Figures (a), (b), (c), (d), (e) and (f) in Fig.25Figure (a) shows the posture of the notebook computer. At this time, the angle between the first shell 10 and the second shell 20 in the notebook computer is 180°. Fig.25 Figure (b) shows the three-dimensional radiation pattern at 6.42 GHz in the L-shaped antenna of the first stage. Fig.25 Figure (c) shows the three-dimensional radiation pattern at 5.72 GHz in the second-stage inverted-F antenna. Fig.25 Figure (d) shows the three-dimensional radiation pattern at 5.34 GHz in the third stage antenna. Fig.25 Figure (e) shows the three-dimensional radiation pattern at 6.77 GHz in the third stage antenna. Fig.25 Figure (f) shows the three-dimensional radiation pattern at 7.47 GHz in the third stage antenna.

[0155] Fig.25 The three-dimensional radiation patterns of Figures (b), (c), (d), (e), and (f) can be divided into two parts: the first part is a wide beam with ripples in the -Y direction, and the second part is a high-gain narrow beam with many grating lobes in the +Y direction. Fig.25 In FIG. 1 , a wide beam is generated by radiation from the opening of the opening slot 40 . A narrow beam is generated by the opening slot 40 itself. The generation of ripples and grating lobes is due to the diffraction of the electric field at the edges of the first shell 10 and the second shell 20 .

[0156] See also Fig.25 In Figures (b) and (c), the wide beam gain of the L-shaped antenna in the first stage and the inverted-F antenna in the second stage is low, that is, the energy radiated by the wide beam is not much, while the gain of the narrow beam is higher. Therefore, most of the energy of the L-shaped antenna in the first stage and the inverted-F antenna in the second stage is radiated by the opening slot itself.

[0157] See also Fig.25 In Figures (d), (e), and (f), the wide beam gain at 5.34 GHz is not very high in the third-stage antenna. However, the wide beam gain at 6.77 GHz and 7.47 GHz is significantly increased, and the narrow beam gain is slightly reduced. In other words, the third-stage antenna can increase the wide beam gain and reduce the narrow beam gain at 6.77 GHz and 7.47 GHz, suppress the radiation of the opening slot itself, and increase the opening radiation of the opening slot, which is beneficial to the wide beam wireless communication required by laptop computers.

[0158] See also Fig.26 (a), (b) and (c) in the figure. Fig.26 Figure (a) shows the electric field amplitude distribution on the first shell and the second shell at 6 GHz in the first stage of the L-shaped antenna. Fig.26Figure (b) shows the electric field amplitude distribution on the first shell and the second shell at 6 GHz in the second stage inverted-F antenna. Fig.26 Figure (c) shows the electric field amplitude distribution on the first shell and the second shell at 6 GHz in the third stage antenna.

[0159] Fig.26 There are two types of currents in Figures (a), (b) and (c): the first type of current is marked with a solid line with an arrow, which is the current radiated from the opening of the opening slot 40, and flows upward or downward from the opening slot 40 along the edges of the first shell 10 and the second shell 20; the second type of current is marked with a dotted line with an arrow, which is the current radiated from the opening slot 40 itself, and flows from the opening slot 40 along the diagonal of the first shell 10 or the second shell 20.

[0160] like Fig.26 As shown in Figures (a), (b) and (c), for the first type of current, the current of the antenna 50 in the third stage is the strongest, that is, the antenna 50 in the third stage successfully excites the floor edge current of the first shell 10 and the second shell 20. Due to the law of conservation of energy, when the first type of current is enhanced, the second type of current will be weakened, that is, when the radiation generated by the opening of the opening slot 40 of the antenna 50 in the third stage is enhanced, the radiation of the opening slot 40 itself in the antenna 50 in the third stage will be suppressed. The wide beam is generated by the radiation of the opening of the opening slot 40. Therefore, it can also be explained that the gain of the wide beam in the antenna 50 in the third stage is higher, while the gain of the wide beam in the antennas in the first and second stages is lower.

[0161] The ripples of the wide beam and the grating lobes of the narrow beam are both caused by the diffraction of the electric field at the edges of the first shell 10 and the second shell 20. It is foreseeable that when the actual sizes of the first shell 10 and the second shell 20 are larger, the ripples and the grating lobes will be denser.

[0162] See also Fig. 27 Figures (a), (b), (c), (d) and (e) in Fig. 27 Figure (a) is the vector electric field distribution diagram of the L-shaped antenna at 6.42 GHz in the first stage. Fig. 27 Figure (b) is the vector electric field distribution diagram of the second-stage inverted-F antenna at 5.72 GHz. Fig. 27 Figure (c) is the vector electric field distribution diagram of the third stage antenna at 5.34 GHz. Fig. 27 Figure (d) is the vector electric field distribution diagram of the third-stage antenna at 6.77 GHz. Fig. 27 Figure (e) is the vector electric field distribution diagram of the third stage antenna at 7.47 GHz.

[0163] like Fig. 27 As shown in Figures (a), (b), (c), (d) and (e), an electric field near the opening slot 40 is formed between the first shell 10 and the second shell 20. Since the opening slot 40 is long enough in the high frequency band, there will be a traveling wave component in the opening slot 40, and the traveling wave will propagate to the opening. When it reaches the opening, it will radiate like a Vivaldi wideband microstrip antenna, and the radiation direction is an arc from the second shell 20 to the first shell 10. Fig. 27 It can be seen from Figures (a) and (b) that, although the electric fields on the upper and lower sides of the L-shaped antenna 80 and the inverted-F antenna 90 point in almost opposite directions, the electric field at the bottom of the L-shaped antenna 80 and the inverted-F antenna 90 is much stronger than the electric field at the top of the L-shaped antenna 80 and the inverted-F antenna 90.

[0164] The third stage antenna 50 is in the 3λ / 4 mode at 5.34GHz like the inverted F antenna. That is, the third stage antenna 50 is in the 3λ / 4 mode at 5.34GHz and the second stage inverted F antenna is in the 3λ / 4 mode at 5.72GHz. Therefore, Fig. 27 The electric field shown in Figure (c) is Fig. 27 The electric field is similar to that shown in Figure (b). Fig. 27 In Figures (d) and (e), the electric field in the open slot 40 is significantly weaker because the electric field is mainly formed between the overlapping portions of the orthographic projections of the first antenna segment 51 and the second antenna segment 52 on the dielectric portion 291.

[0165] See also Fig.28 Figures (a), (b) and (c) in Fig.28 Figure (a) is the electric field distribution diagram of the third-stage antenna on the ZY plane at a frequency of 5.34 GHz. Fig.28 Figure (b) is the electric field distribution diagram of the third-stage antenna on the ZY plane at a frequency of 6.77 GHz. Fig.28 Figure (c) is the electric field distribution diagram of the third stage antenna on the ZY plane at a frequency of 7.47 GHz. Fig.28 The black dotted lines in (a), (b) and (c) represent antennas.

[0166] from Fig.28 As can be seen from Figure (a) in FIG. 5 , at a frequency of 5.34 GHz, the third-stage antenna is in a 3λ / 4 mode like an I FA antenna, and the electric field is mainly distributed around the first antenna segment 51. Fig.28 It can be seen from Figures (b) and (c) in that at frequencies of 6.77 GHz and 7.47 GHz, the electric field is mainly concentrated in the overlapping portion of the orthographic projections of the first antenna segment 51 and the second antenna segment 52 on the dielectric portion 291 . Fig.28The concentrated electric field in (b) is weaker, while Fig.28 The concentrated electric field in (a) and (c) is stronger. Therefore, in the third stage antenna, the electric field values ​​of the 3λ / 4 mode and the 2λ mode are higher than that of the 3λ / 2 mode.

[0167] See also Fig.29 In Figure (a) and Figure (b), Fig.29 Figure (a) shows the three-dimensional radiation pattern of the first-stage L-shaped antenna at 2.2 GHz. Fig.29 Figure (b) shows the three-dimensional radiation pattern of the third-stage antenna at 2.47 GHz.

[0168] Since the inverted-F antenna of the second stage has no resonance in the low frequency band, and the low frequency band mode of the antenna of the fourth stage is the same as that of the antenna of the third stage, the three-dimensional radiation pattern of the low frequency band of the inverted-F antenna of the second stage and the antenna of the fourth stage is omitted.

[0169] Please refer to Fig.25 Figures (b), (c), (d), (e), and (f) and Fig.29 From Figures (a) and (b) in the figure, it can be seen that the three-dimensional radiation pattern in the low-frequency band is very different from the three-dimensional radiation pattern in the high-frequency band. The three-dimensional radiation pattern in the low-frequency band has two heart-shaped main lobes, which are the radiation of the traveling wave current propagating in opposite directions along the edges of the first shell and the second shell. There is no wide beam or grating lobe along the -Y direction in the three-dimensional radiation pattern in the low-frequency band, because the opening of the opening slot is too small to radiate well. In addition, although the electric field near the opening of the opening slot in the low-frequency band is similar to that in the high-frequency band, it is not a radiation field, but a near field propagating in the +X and -X directions. The traveling wave current at the edges of the first shell and the second shell is excited by the antenna resonance in the low-frequency band.

[0170] See also Fig.30 In Figure (a) and Figure (b), Fig.30 Figure (a) shows the electric field amplitude distribution of the L-type antenna at 2.2 GHz in the first stage. Fig.30 Figure (b) shows the electric field amplitude distribution of the third-stage antenna at 2.47 GHz.

[0171] from Fig.30 It can be seen from Figures (a) and (b) that in the low frequency band, the traveling wave currents at the edges of the first shell 10 and the second shell 20 of the L-shaped antenna 80 of the first stage and the antenna 50 of the third stage are well excited and radiate with the increase of the propagation distance, and the current magnitude decays with the increase of the propagation distance.

[0172] See also Fig.31 Figures (a), (b) and (c) in Fig.31 FIG. 5 (a) shows the posture of the antenna in the fourth stage at the actual use angle (the angle between the first shell and the second shell is 110 degrees). Fig.31 Figure (b) shows the three-dimensional radiation pattern at 2.44 GHz in the corresponding posture of Figure (a). Fig.31 Figure (c) shows the three-dimensional radiation pattern at 6 GHz in the corresponding posture of Figure (a).

[0173] Please refer to Fig.29 Figure (b) and Fig.31 In Figure (b), Fig.29 Figure (b) shows the three-dimensional radiation pattern of the antenna in the third stage at 2.47 GHz at the test angle (the angle between the first shell and the second shell is 180°). It can be seen that when the angle between the first shell and the second shell is 110°, the gain in the low frequency band becomes higher than when the angle between the first shell and the second shell is 180°. This is because at the actual use angle (the angle between the first shell and the second shell is 110°), the opening of the opening slot becomes larger, and the traveling wave current can better propagate in the opposite direction of the edges of the first shell and the second shell.

[0174] Please refer to Fig.25 Figure (e) and Fig.31 Figure (c) in the figure, Fig.25 Figure (e) in the figure shows the three-dimensional radiation pattern of the antenna in the third stage at 6.77GHz under the test angle (the angle between the first shell and the second shell is 180°). It can be seen that when the angle between the first shell 10 and the second shell 20 is 110°, the gain of the narrow beam in the +Y direction becomes higher than when the angle between the first shell 10 and the second shell 20 is 180°. This is because at the actual use angle (the angle between the first shell and the second shell is 110°), a horn-like waveguide structure is formed between the first shell 10 and the second shell 20, so the radiation energy of the opening slot will be more directed to the +Y direction. The angle between the first shell 10 and the second shell 20 has a relatively small effect on the radiation field of the opening of the opening slot, because the radiation field is less restricted by the first shell 10 and the second shell 20 after being radiated from the opening of the opening slot. The main effect of the angle between the first shell 10 and the second shell 20 on the wide beam is to make the beam bend.

[0175] In some embodiments, see Fig.32(a), (b), (c), (d), (e) and (f) in the figure. The foldable electronic device 100 may include two antennas, the two antennas are a first antenna 501 and a second antenna 502; the first antenna 501 is located on the first shell 10 or the second shell 20, and the second antenna 502 is located on the first shell 10 or the second shell 20.

[0176] Fig.32 Figure (a) shows that the first antenna 501 and the second antenna 502 are both located on the second housing 20, and the first antenna 501 and the second antenna 502 are respectively located on both sides of the rotating shaft 30 along the Y-axis direction. The number of the opening slots 40 can also be two, and the two opening slots 40 are respectively located on both sides of the second housing 20 along the Y-axis direction. The second housing 20 includes a main body 292 and two dielectric parts 291 connected to the main body 292, and the two dielectric parts 291 are respectively located at positions of the main body 291 close to the two opening slots 40, and the first antenna 501 and the second antenna 502 are respectively arranged on the two dielectric parts 291.

[0177] In other embodiments, the mounting shell may be a first shell 10 , which includes a main body 292 and two dielectric parts 291 connected to the main body 292 , and the first antenna 501 and the second antenna 502 are respectively disposed on the two dielectric parts 291 .

[0178] In some other embodiments, the first shell 10 and the second shell 20 are both mounting shells, and the first antenna 501 and the second antenna 502 are respectively disposed on the dielectric portions 291 of the first shell 10 and the second shell 20 .

[0179] Multiple-input multiple-output (MIMO) is a system that uses multiple antennas at both the transmitter and receiver to increase channel capacity. An obvious feature of the MIMO system is its extremely high spectrum utilization efficiency. On the basis of fully utilizing existing spectrum resources, it gains reliability and effectiveness by utilizing spatial resources.

[0180] Fig.32 The horizontal axis in Figure (b) is frequency, and its unit is GHz. Fig.32 The vertical axis in Figure (b) is the coefficient, and its unit is dB. Fig.32 A curve in Figure (b) represents the port reflection coefficient S11, S11 = reflected energy / total input energy. If S11≤-10dB, it means that most of the incident energy is transmitted to the antenna for transmission, which means that the match is good. Fig.32Another curve in (b) of the figure represents the mutual coupling coefficient S21. The two antennas are the first antenna 501 and the second antenna 502. There may be energy transmission between the first antenna 501 and the second antenna 502. S21 = energy received by the first antenna from the second antenna / total energy input by the second antenna. The lower S21 is, the lower the coupling is. The first antenna 501 and the second antenna 502 are independent of each other, and the first antenna 501 and the second antenna 502 have little influence on each other.

[0181] Please refer to Fig. 22 and Fig.32 From Figure (b), we can see that the port reflection coefficient S11 of the 2×2 MIMO system is almost the same as that of the fourth-stage antenna, 2.4 GHz to 2.48 GHz and 5.15 GHz to 7.125 GHz can be covered, and, in these frequency bands, the port reflection coefficient S11 is lower than -10 dB and the mutual coupling coefficient S21 is lower than -30 dB.

[0182] Fig.32 Figure (c) shows the three-dimensional radiation pattern of the first antenna at 2.44 GHz. Fig.32 Figure (d) shows the three-dimensional radiation pattern of the first antenna at 6 GHz. Fig.32 Figure (e) shows the three-dimensional radiation pattern of the second antenna at 2.44 GHz. Fig.32 Figure (f) shows the three-dimensional radiation pattern of the second antenna at 6 GHz.

[0183] See also Fig.32 From Figures (c), (d), (e) and (f), we can see that Fig.32 Figure (c) and (d) are symmetrical to each other. Fig.32 Figures (e) and (f) in FIG. 5 are symmetrical to each other. Due to the same radiation mechanism and the high isolation between the first antenna 501 and the second antenna 502, Fig.32 Figure (c), Figure (d) and Fig.31 Figure (b) in is similar. Fig.32 Figure (e), Figure (f) and Fig.31 Figure (c) in is similar.

[0184] By setting up two antennas, a 2×2 MIMO system can be formed, which can provide greater communication capacity and faster transmission speed, achieve high signal coverage, and improve user experience and work efficiency, especially in those occasions with high requirements for equipment performance and reliability. The mutual coupling coefficient between the two antennas is less than -30dB, and the cross-polarization loss is less than 0.03, which ensures good coordination between the two antennas and improves the reliability and speed of wireless communication.

[0185] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0186] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An antenna, characterized in that: The antenna is used for a foldable electronic device, the foldable electronic device comprises a first shell, a second shell, and a rotating shaft connected to the first shell and the second shell respectively, the first shell and the second shell are relatively rotated through the rotating shaft, so that the foldable electronic device switches between a folded state and an unfolded state; when the foldable electronic device is in the unfolded state, the rotating shaft, the first shell and the second shell together form an open slot with an opening; the installation shell is the first shell or the second shell, the installation shell comprises a dielectric part and a main body part connected to each other, the dielectric part is located at a position of the main body part close to the open slot, and the antenna is installed on the dielectric part; The antenna includes a connecting antenna segment, and a first antenna segment and a second antenna segment electrically connected to opposite ends of the connecting antenna segment, wherein the first antenna segment and the second antenna segment are respectively located on opposite side surfaces of the dielectric portion; the antenna also includes a grounding portion, one end of which is electrically connected to a ground plate of the foldable electronic device, and the other end of which is electrically connected to the first antenna segment, the second antenna segment or the connecting antenna segment; the antenna also includes a feeding portion electrically connected to the first antenna segment, and the feeding portion is used to be electrically connected to a radio frequency module of the foldable electronic device.

2. The antenna according to claim 1, characterized in that The dielectric portion is provided with a first via hole penetrating the dielectric portion, and the connecting antenna segment passes through the first via hole.

3. The antenna according to claim 1, characterized in that The dielectric portion includes a side surface, and a first mounting surface and a second mounting surface respectively connected to opposite sides of the side surface; the first antenna segment is mounted on the first mounting surface; the second antenna segment is mounted on the second mounting surface; and the connecting antenna segment is mounted on the side surface.

4. The antenna according to any one of claims 1 to 3, characterized in that: The ground portion is electrically connected to a position of the first antenna segment close to the opening, or the ground portion is electrically connected to a position of the second antenna segment close to the opening.

5. The antenna according to any one of claims 1 to 4, characterized in that: The first antenna segment is arranged in parallel with the second antenna segment.

6. The antenna according to claim 5, characterized in that The length of the second antenna segment is smaller than that of the first antenna segment, and the feeding portion is located outside a positive projection area of ​​the second antenna segment on the first antenna segment.

7. The antenna according to claim 6, characterized in that The antenna also includes a lumped element; A second via hole is formed on the dielectric portion, one end of the feed portion is electrically connected to the first antenna segment, and the other end of the feed portion is electrically connected to the lumped element through the second via hole.

8. The antenna according to any one of claims 1 to 7, characterized in that: The length of the first antenna segment is L1, 22.4 mm ≤ L1 ≤ 33.6 mm; and / or, The length of the second antenna segment is L2, 14.32 mm ≤ L2 ≤ 21.48 mm; and / or, The depth of the opening groove is L3, 23.52mm≤L3≤35.28mm.

9. The antenna according to any one of claims 1 to 8, characterized in that: The width of the first antenna segment is W1, 0.56 mm ≤ W1 ≤ 0.84 mm; and / or, The width of the second antenna segment is W2, 0.4 mm ≤ W2 ≤ 0.6 mm; and / or, The width of the opening groove is W3, 0.56mm≤W3≤0.84mm.

10. A foldable electronic device, characterized in that: The foldable electronic device comprises a hinge, a first shell, a second shell, and an antenna as claimed in any one of claims 1 to 9; The first shell and the second shell rotate relative to each other via the rotating shaft, so that the foldable electronic device switches between a folded state and an unfolded state; When the foldable electronic device is in the unfolded state, the rotating shaft, the first shell and the second shell together form an open slot with an opening.

11. The foldable electronic device according to claim 10, characterized in that: The foldable electronic device comprises two antennas, which are respectively a first antenna and a second antenna; the first antenna is located on the first shell or the second shell, and the second antenna is located on the first shell or the second shell.

12. The foldable electronic device according to claim 10, characterized in that: The foldable electronic device is a notebook computer.

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