Antenna structure and electronic equipment

Abstract

An antenna structure includes: a substrate, a ground layer, a radiating patch, a first feed structure, and a second feed structure. The radiating patch, the first feed structure, and the second feed structure are located on a first surface of the substrate, and the ground layer is located on a second surface of the substrate. The first surface and the second surface are two opposing surfaces of the substrate. The radiating patch has a slotted structure. In a first direction, the first feed structure and the second feed structure are symmetrically located on both sides of the radiating patch.

Description

Technical Field

[0001] This article relates to, but is not limited to, the field of communication technology, and in particular to an antenna structure and electronic device. Background Technology

[0002] Antennas are a crucial component of mobile communications, and their research and design play a vital role in the overall mobile communication process. The biggest change brought about by fifth-generation mobile communication technology (5G) is the revolution in user experience. In terminal devices, signal quality directly impacts user experience; therefore, the design of 5G terminal antennas will inevitably become one of the key aspects of 5G deployment. Summary of the Invention

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0004] This disclosure provides an antenna structure and an electronic device.

[0005] On one hand, this disclosure provides an antenna structure including: a substrate, a ground layer, a radiating patch, a first feed structure, and a second feed structure. The radiating patch, the first feed structure, and the second feed structure are located on a first surface of the substrate, and the ground layer is located on a second surface of the substrate; the first surface and the second surface are two opposing surfaces of the substrate. The radiating patch has a slotted structure. In a first direction, the first feed structure and the second feed structure are symmetrically located on both sides of the radiating patch.

[0006] In some exemplary embodiments, the radiating patch is configured to introduce two resonant frequencies and a radiating null between the two resonant frequencies, and the first and second feed structures are configured to introduce two additional radiating nulls.

[0007] In some exemplary embodiments, the slotted structure is substantially symmetrical about a first centerline of the radiating patch in the first direction and substantially symmetrical about a second centerline of the radiating patch in a second direction; the second direction intersects the first direction.

[0008] In some exemplary embodiments, the orthographic projection of the slotted structure onto the substrate is approximately H-shaped.

[0009] In some exemplary embodiments, the slotted structure has a first slot, a second slot, and a third slot; the first slot and the third slot are symmetrically connected on both sides of the second slot about the second center line, and the second slot communicates with the first slot and the third slot.

[0010] In some exemplary embodiments, the width of the second slot is smaller than the width of the first slot.

[0011] In some exemplary embodiments, the orthographic projections of the first slot and the third slot on the substrate are straight line segments parallel to the second direction.

[0012] In some exemplary embodiments, the first slot has a first portion and a second portion that are connected; the orthographic projection of the first portion and the second portion on the substrate is L-shaped, and the first portion and the second portion are approximately symmetrical about the first center line.

[0013] In some exemplary embodiments, the first slot has a communicating third portion, a fourth portion, and a fifth portion; the third portion and the fifth portion are symmetrically connected on both sides of the fourth portion in the first direction; the fourth portion communicates with the second slot, and the width of the fourth portion gradually decreases along the direction away from the communication position with the second slot until it is approximately the same as the width of the third portion.

[0014] In some exemplary embodiments, the orthographic projection of the second slot on the substrate is a straight line segment parallel to the first direction.

[0015] In some exemplary embodiments, the second slot includes a first slit extending along the second direction and n second slits extending along the first direction; the n second slits are arranged sequentially along the second direction, and the first slit and the n second slits are connected, wherein n is greater than 0 and less than or equal to 3.

[0016] In some exemplary embodiments, any one of the second slits is substantially symmetrical about the first center line, and the n second slits are substantially symmetrical about the second center line.

[0017] In some exemplary embodiments, in a plane parallel to the substrate, the radiating patch has a first edge and a second edge in the first direction; the first feeding structure is adjacent to the first edge, and the second feeding structure is adjacent to the second edge. The distance between the first feeding structure and the first edge of the radiating patch is less than or equal to the distance between the second feeding structure and the second edge of the radiating patch.

[0018] In some exemplary embodiments, in a plane parallel to the substrate, the radiating patch has a first notch at the first edge and a second notch at the second edge; at least a portion of the first power supply structure is located within the first notch, and at least a portion of the second power supply structure is located within the second notch.

[0019] In some exemplary embodiments, the first power supply structure includes: a power supply body, a first branch and a second branch; the first branch and the second branch are electrically connected symmetrically to both sides of the power supply body about the centerline of the first power supply structure in a second direction.

[0020] In some exemplary embodiments, the feed body of the first feed structure includes: a first feed body and a second feed body connected in sequence; the first branch and the second branch are symmetrically connected on both sides of the first feed body about the centerline of the first feed structure in a second direction; the width of the first feed body is greater than the width of the second feed body, and at least a portion of the second feed body is located within the first notch of the radiating patch.

[0021] In some exemplary embodiments, a first branch of the first power supply structure includes a first power supply branch and a first open-circuit branch; the first power supply branch is electrically connected to the first power supply body and the first open-circuit branch, and the first open-circuit branch is located on the side of the first power supply branch away from the first power supply body. A second branch of the first power supply structure includes a second power supply branch and a second open-circuit branch; the second power supply branch is electrically connected to the first power supply body and the second open-circuit branch, and the second open-circuit branch is located on the side of the second power supply branch away from the first power supply body.

[0022] In some exemplary embodiments, the first open-circuit stub and the second open-circuit stub of the first power supply structure are straight line segments parallel to the first direction.

[0023] In some exemplary embodiments, the orthographic projections of the radiating patch, the first feeding structure, and the second feeding structure onto the substrate do not overlap.

[0024] On the other hand, embodiments of this disclosure provide an electronic device including the antenna structure described above.

[0025] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the technical solutions of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the technical solutions of this disclosure and do not constitute a limitation on the technical solutions of this disclosure. The shape and size of one or more components in the drawings do not reflect actual proportions and are only intended to illustrate the content of this disclosure.

[0027] Figure 1 This is a plan view of an antenna structure according to at least one embodiment of the present disclosure;

[0028] Figure 2 for Figure 1 The diagram shows a partial cross-sectional view of the antenna structure along the second central axis OO'.

[0029] Figure 3 for Figure 1 The simulation results of the gain curve of the antenna structure shown are displayed.

[0030] Figures 4A to 4C for Figure 1 The surface current vector distribution diagram of the radiating patch of the antenna structure shown;

[0031] Figure 5 This is another planar schematic diagram of the antenna structure according to at least one embodiment of the present disclosure;

[0032] Figure 6 for Figure 5 The simulation results of the gain curve of the antenna structure shown are displayed.

[0033] Figure 7 This is another planar schematic diagram of the antenna structure according to at least one embodiment of the present disclosure;

[0034] Figure 8 for Figure 7 The simulation results of the gain curve of the antenna structure shown are displayed.

[0035] Figure 9 This is another planar schematic diagram of the antenna structure according to at least one embodiment of the present disclosure;

[0036] Figure 10 for Figure 9 The simulation results of the gain curve of the antenna structure shown are displayed.

[0037] Figure 11 This is another planar schematic diagram of the antenna structure according to at least one embodiment of the present disclosure;

[0038] Figure 12 for Figure 11 The simulation results of the gain curve of the antenna structure shown are displayed.

[0039] Figure 13 This is another planar schematic diagram of the antenna structure according to at least one embodiment of the present disclosure;

[0040] Figure 14 for Figure 13 The simulation results of the gain curve of the antenna structure shown are displayed.

[0041] Figure 15 This is another planar schematic diagram of the antenna structure according to at least one embodiment of the present disclosure;

[0042] Figure 16 for Figure 15 The simulation results of the gain curve of the antenna structure shown are displayed.

[0043] Figure 17 This is a schematic diagram of an electronic device according to at least one embodiment of the present disclosure;

[0044] Figure 18 This is a plan view of an electronic device according to at least one embodiment of the present disclosure;

[0045] Figure 19 for Figure 18 A partial cross-sectional view along the P-P' direction. Detailed Implementation

[0046] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. The implementation can be carried out in many different forms. Those skilled in the art will readily understand that the methods and content can be changed to one or more forms without departing from the spirit and scope of this disclosure. Therefore, this disclosure should not be construed as limited to the content described in the following embodiments. Without conflict, the embodiments and features in the embodiments of this disclosure can be arbitrarily combined with each other.

[0047] In the accompanying drawings, the size of one or more constituent elements, the thickness of layers, or areas are sometimes exaggerated for clarity. Therefore, this disclosure is not necessarily limited to these dimensions, and the shapes and sizes of the various components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate ideal examples, and this disclosure is not limited to the shapes or values ​​shown in the drawings.

[0048] The ordinal numbers such as "first," "second," and "third" in this disclosure are used to avoid confusion among the constituent elements, not to limit the quantity. The term "multiple" in this disclosure refers to two or more quantities.

[0049] In this disclosure, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of facilitating the description and simplification of the specification, and does not imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this disclosure. The positional relationships of the constituent elements may be appropriately changed depending on the direction in which the constituent elements are described. Therefore, the description is not limited to the terms used in the specification and may be appropriately replaced as appropriate.

[0050] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the meaning of these terms in this disclosure as appropriate.

[0051] In this disclosure, "electrical connection" includes the situation where constituent elements are connected together by a component having a certain electrical function. There are no particular limitations on the "component having a certain electrical function," as long as it enables the transmission of electrical signals between the connected constituent elements. Examples of "component having a certain electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other components having one or more functions.

[0052] In this disclosure, "parallel" refers to a state in which the angle formed by two straight lines is greater than or equal to -10° and less than 10°, and therefore can include a state in which the angle is greater than or equal to -5° and less than 5°. Furthermore, "perpendicular" refers to a state in which the angle formed by two straight lines is greater than or equal to 80° and less than 100°, and therefore can include a state in which the angle is greater than or equal to 85° and less than 95°.

[0053] In this disclosure, "about" and "approximately" mean without strictly defined limits, allowing for errors in the process and measurement. The "approximately the same" index value in this disclosure differs by no more than 10%.

[0054] In this disclosure, "width" refers to the dimension in the direction perpendicular to the extension direction. "Length" refers to the dimension in the extension direction.

[0055] In this disclosure, a microstrip (MS) refers to a microwave transmission line consisting of a single conductor strip supported on a dielectric substrate, the other side of which is fabricated with a grounding metal layer.

[0056] This disclosure provides at least one embodiment of an antenna structure, including: a substrate, a ground layer, a radiating patch, a first feed structure, and a second feed structure. The radiating patch, the first feed structure, and the second feed structure are located on a first surface of the substrate, and the ground layer is located on a second surface of the substrate. The first surface and the second surface are two opposing surfaces of the substrate. The radiating patch has a slotted structure. In a first direction, the first feed structure and the second feed structure are symmetrically located on both sides of the radiating patch.

[0057] In some exemplary embodiments, the radiating patch is configured to introduce two resonant frequencies and a radiating null between the two resonant frequencies, and the first and second feed structures are configured to introduce two additional radiating nulls.

[0058] The antenna structure provided in this embodiment introduces two resonant frequencies by setting a slotted structure on the radiating patch, generating a radiating null between the two resonant frequencies. It also utilizes two symmetrical feed structures to introduce two additional radiating nulls, thus realizing a differentially fed dual-bandbandpass filter antenna structure. This antenna structure can be used in the n78 and n79 bands of 5G without significantly increasing the antenna profile or introducing additional discrete components, thus avoiding significant insertion loss. Furthermore, this antenna structure achieves high passband selectivity and high out-of-band rejection characteristics.

[0059] In some exemplary embodiments, the slotted structure is substantially symmetrical about a first centerline of the radiating patch in a first direction and substantially symmetrical about a second centerline of the radiating patch in a second direction; the second direction intersects the first direction. For example, the first direction is perpendicular to the second direction. In some examples, the first centerline of the radiating patch in the first direction may coincide with the first central axis of the antenna structure in the first direction, and the second centerline of the radiating patch in the second direction may coincide with the second central axis of the antenna structure in the second direction. However, this embodiment is not limited to this. For example, the first centerline of the radiating patch in the first direction and the first central axis of the antenna structure in the first direction may not coincide.

[0060] In some exemplary embodiments, the orthographic projection of the slotted structure onto the substrate may be approximately H-shaped. However, this embodiment is not limited to this.

[0061] In some exemplary embodiments, the slotted structure may have a first slot, a second slot, and a third slot. The first slot and the third slot may be symmetrically connected to both sides of the second slot about a second centerline in a second direction about the radiating patch. The second slot communicates with both the first slot and the third slot. In some examples, the second slot extends along a second direction, and the first slot and the third slot both extend along a first direction, with the second slot located on the second centerline. However, this embodiment is not limited to this.

[0062] In some exemplary embodiments, the width of the second slot is smaller than the width of the first slot. In this example, the widths of the first and third slots can be approximately the same, and both are greater than the width of the second slot. However, this embodiment is not limited to this.

[0063] In some exemplary embodiments, the orthographic projections of the first and third slots onto the substrate are straight line segments parallel to the second direction. However, this embodiment is not limited to this.

[0064] In some exemplary embodiments, the first slot has a connected first portion and a second portion. The orthographic projections of both the first and second portions onto the substrate are L-shaped, and the first and second portions are approximately symmetrical about a first centerline of the radiating patch in a first direction. In this example, the connection point between the first and second portions is connected to the second slot. However, this embodiment is not limited to this.

[0065] In some exemplary embodiments, the first slot may have a connected third, fourth, and fifth portion. The third and fifth portions may be symmetrically connected on both sides of the fourth portion in a first direction. The fourth portion communicates with the second slot, and the width of the fourth portion gradually decreases along the direction away from the communication position with the second slot until it is approximately the same as the width of the third portion. However, this embodiment is not limited in this respect.

[0066] In some exemplary embodiments, the orthographic projection of the second slot onto the substrate can be a straight line segment parallel to the first direction. However, this embodiment is not limited to this.

[0067] In some exemplary embodiments, the second slot may include a first slit extending along a second direction and n second slits extending along a first direction. The n second slits are arranged sequentially along the second direction, and the first slit and the n second slits are connected, wherein n is greater than 0 and less than or equal to 3. In some examples, the second slot may include a first slit and one second slit, or it may include a first slit and three second slits. However, this embodiment is not limited thereto.

[0068] In some exemplary embodiments, any one of the second slits is approximately symmetrical about the first centerline, and the n second slits are approximately symmetrical about the second centerline. In some examples, when n=1, the second slit may be located on the second centerline. When n=3, one of the second slits may be located on the second centerline, and the other two second slits may be symmetrically located on either side of the aforementioned second slit along a second direction. However, this embodiment is not limited in this respect.

[0069] In some exemplary embodiments, the radiating patch has a first edge and a second edge in a plane parallel to the substrate, in a first direction. A first feed structure is adjacent to the first edge of the radiating patch, and a second feed structure is adjacent to the second edge of the radiating patch. The distance between the first feed structure and the first edge of the radiating patch may be less than or equal to the distance between the second feed structure and the second edge of the radiating patch. In some examples, the distance between the first feed structure and the first edge of the radiating patch may be approximately the same as, or may be different from, the distance between the second feed structure and the second edge of the radiating patch. However, this embodiment is not limited in this respect.

[0070] In some exemplary embodiments, the radiating patch has a first notch at a first edge and a second notch at a second edge in a plane parallel to the substrate. At least a portion of a first feed structure is located within the first notch, and at least a portion of a second feed structure is located within the second notch. In some examples, the first and second notches may be substantially symmetrical about a first centerline of the radiating patch in a first direction.

[0071] In some exemplary embodiments, the first power supply structure may include a power supply body, a first branch, and a second branch. The first branch and the second branch may be electrically connected symmetrically to both sides of the power supply body about the centerline of the first power supply structure in a second direction.

[0072] In some exemplary embodiments, the feed body of the first feed structure may include a first feed body and a second feed body electrically connected in sequence. A first branch and a second branch are symmetrically electrically connected on both sides of the first feed body about a centerline of the first feed structure in a second direction. The width of the first feed body is greater than the width of the second feed body, and at least a portion of the second feed body is located within a first notch of the radiating patch. Similarly, at least a portion of the second feed body of the second feed structure may be located within a second notch of the radiating patch.

[0073] In some exemplary embodiments, a first branch of the first feed structure may include a first feed branch and a first open-circuit branch. The first feed branch is electrically connected to the first feed body and the first open-circuit branch. The first open-circuit branch is located on the side of the first feed branch away from the first feed body. A second branch of the first feed structure may include a second feed branch and a second open-circuit branch. The second feed branch is electrically connected to the first feed body and the second open-circuit branch. The second open-circuit branch is located on the side of the second feed branch away from the first feed body.

[0074] In some exemplary embodiments, the first open-circuit stub and the second open-circuit stub of the first power supply structure are straight line segments parallel to the first direction. However, this embodiment is not limited to this.

[0075] The antenna structure of this embodiment will be illustrated below with several examples.

[0076] Figure 1 This is a plan view of an antenna structure according to at least one embodiment of the present disclosure. Figure 2 for Figure 1 The diagram shows a partial cross-sectional view of the antenna structure along the second central axis OO'. The second central axis OO' is the central axis of the antenna structure in the second direction D2, and it is parallel to the first direction D1. The first direction D1 and the second direction D2 are located in the same plane, and the first direction D1 can be perpendicular to the second direction D2. The first central axis QQ' is the central axis of the antenna structure in the first direction D1, and it is parallel to the second direction D2.

[0077] In some exemplary implementations, such as Figure 1 and Figure 2 As shown, the antenna structure of this embodiment includes: a substrate 10, a ground layer 30, a radiating patch 11, a first feed structure 21, and a second feed structure 22. The radiating patch 11, the first feed structure 21, and the second feed structure 22 are located on the first surface of the substrate 10, and the ground layer 30 is located on the second surface of the substrate 10. The first surface and the second surface are two opposing surfaces of the substrate 10. In this example, the radiating patch 11 and the ground layer 30 are located on opposite surfaces of the substrate 10, and the first feed structure 21 and the second feed structure 22 are located on the same surface of the substrate 10 as the radiating patch 11.

[0078] In some exemplary implementations, such as Figure 1 As shown, the substrate 10 can be rectangular. However, this embodiment is not limited to this. For example, the substrate 10 can be non-rectangular, such as circular, pentagonal, or other shapes.

[0079] In some exemplary implementations, such as Figure 1 and Figure 2As shown, the orthographic projections of the radiating patch 11, the first feed structure 21, and the second feed structure 22 on the substrate 10 do not overlap. In a plane parallel to the substrate 10, the first feed structure 21 and the second feed structure 22 are symmetrically located on both sides of the radiating patch 11 along a first direction D1. The first feed structure 21 and the second feed structure 22 can be approximately symmetrical about a first central axis QQ'. The orthographic projection of the ground layer 30 on the substrate 10 can include the orthographic projections of the radiating patch 11, the first feed structure 21, and the second feed structure 22 on the substrate 10. In this example, the first feed structure 21 is coupled adjacently to the radiating patch 11, and the second feed structure 22 is coupled adjacently to the radiating patch 11. The first feed structure 21 and the second feed structure 22 can be microstrip lines, stimulating the radiating patch 11 through adjacent coupling. Moreover, the symmetrical arrangement of the first feed structure 21 and the second feed structure 22 on both sides of the radiating patch 11 along the first direction D1 enables differential feeding, stimulating the radiating patch 11 using differential odd-mode excitation. The first feed structure 21 and the second feed structure 22 can introduce two radiation zeros through impedance transformation design, located in the high-frequency band and the low-frequency band respectively.

[0080] In some exemplary implementations, such as Figure 1 As shown, the radiating patch 11 has a slotted structure 111. The slotted structure 111 is approximately symmetrical about a first centerline of the radiating patch 11 in a first direction D1, and approximately symmetrical about a second centerline of the radiating patch 11 in a second direction D2. In this example, the first centerline of the radiating patch 11 may coincide with the first central axis QQ' of the antenna structure, and the second centerline of the radiating patch 11 may coincide with the second central axis OO' of the antenna structure. However, this embodiment is not limited to this. In this example, by designing a slot in the radiating patch 11, two resonant frequency bands and a radiating null point located between the two resonant frequency points can be introduced. The antenna structure provided in this embodiment can achieve dual-bandpass filtering.

[0081] In some exemplary implementations, such as Figure 1 As shown, in a plane parallel to the substrate 10, the radiating patch 11 has a first edge 11a and a second edge 11b in a first direction D1, and a third edge 11c and a fourth edge 11d in a second direction D2. Both the third edge 11c and the fourth edge 11d are parallel to the first direction D1. The two ends of the first edge 11a are connected to the third edge 11c and the fourth edge 11d, respectively, and the two ends of the second edge 11b are also connected to the third edge 11c and the fourth edge 11d, respectively. The first edge 11a is adjacent to the first feeding structure 21, and the second edge 11b is adjacent to the second feeding structure 22.

[0082] In some exemplary implementations, such as Figure 1As shown, the first edge 11a of the radiating patch 11 includes a first line segment, a second line segment, a third line segment, a fourth line segment, and a fifth line segment connected in sequence. One end of the first line segment is connected to the third edge 11c, and the other end is connected to the second line segment. One end of the fifth line segment is connected to the fourth edge 11d, and the other end is connected to the fourth line segment. The extending directions of the first, third, and fifth line segments are parallel to the second direction D2, and the extending directions of the second and fourth line segments are parallel to the first direction D1. The second edge 11b of the radiating patch 11 includes a sixth line segment, a seventh line segment, an eighth line segment, a ninth line segment, and a tenth line segment connected in sequence. One end of the sixth line segment is connected to the third edge 11c, and the other end is connected to the seventh line segment. One end of the tenth line segment is connected to the fourth edge 11d, and the other end is connected to the ninth line segment. The extending directions of the sixth, eighth, and tenth line segments are parallel to the second direction D2, and the extending directions of the seventh and ninth line segments are parallel to the first direction D1.

[0083] In some exemplary implementations, such as Figure 1 As shown, the radiating patch 11 is symmetrical about the second central axis OO'. The third edge 11c and the fourth edge 11d of the radiating patch 11 are approximately the same length. The first and fifth segments of the first edge 11a are approximately the same length, as are the second and fourth segments. The sixth and tenth segments of the second edge 11b are approximately the same length, as are the seventh and ninth segments.

[0084] In some exemplary implementations, such as Figure 1 As shown, the radiating patch 11 is symmetrical about the first central axis QQ'. The lengths of the first line segment of the first edge 11a and the sixth line segment of the second edge 11b of the radiating patch 11 are approximately the same; the lengths of the second line segment of the first edge 11a and the seventh line segment of the second edge 11b are approximately the same; the lengths of the third line segment of the first edge 11a and the eighth line segment of the second edge 11b are approximately the same; the lengths of the fourth line segment of the first edge 11a and the ninth line segment of the second edge 11b are approximately the same; and the lengths of the fifth line segment of the first edge 11a and the tenth line segment of the second edge 11b are approximately the same.

[0085] In some exemplary implementations, such as Figure 1As shown, in a plane parallel to the substrate 10, the radiating patch 11 has a first notch 110a and a second notch 110b. The first notch 110a is located at the first edge 11a of the radiating patch 11 and is surrounded by a second, third, and fourth line segment of the first edge 11a. The second notch 110b is located at the second edge 11b of the radiating patch 11 and is surrounded by a seventh, eighth, and ninth line segment of the second edge 11b. In this example, the first edge 11a is recessed towards the side closer to the second edge 11b to form the first notch 110a, and the second edge 11b is recessed towards the side closer to the first edge 11a to form the second notch 110b.

[0086] In some exemplary implementations, such as Figure 1 As shown, at least a portion of the first feeding structure 21 is located within the first recess 110a of the radiating patch 11. A first spacing exists between the first feeding structure 21 outside the first recess 110a and the first edge 11a of the radiating patch 11, and a second spacing exists between the first feeding structure 21 within the first recess 110a and a third segment of the first edge 11a of the radiating patch 11. At least a portion of the second feeding structure 22 is located within the second recess 110b of the radiating patch 11. A third spacing exists between the second feeding structure 22 outside the second recess 110b and the second edge 11b of the radiating patch 11, and a fourth spacing exists between the second feeding structure 22 within the second recess 110b and an eighth segment of the second edge 11b of the radiating patch 11. In this example, the first and third spacings can be substantially the same, the second and fourth spacings can be substantially the same, and the first spacing can be different from the second spacing; for example, the first spacing can be smaller than the second spacing. However, this embodiment is not limited in this respect. For example, the first spacing can be different from the third spacing, and the second spacing can be different from the fourth spacing. Alternatively, the first, second, third, and fourth spacings can be roughly the same.

[0087] In some exemplary implementations, such as Figure 1As shown, in a plane parallel to the substrate 10, the slotted structure 111 of the radiating patch 11 can be approximately symmetrical about a first central axis QQ' and also approximately symmetrical about a second central axis OO'. The orthographic projection of the slotted structure 111 onto the substrate 10 can be approximately H-shaped. The slotted structure 111 can have a first slot 111a, a second slot 111b, and a third slot 111c. The second slot 111b is located between the first slot 111a and the third slot 111c in the second direction D2 and communicates with the first slot 111a and the third slot 111c. The first slot 111a and the third slot 111c can be symmetrically connected on both sides of the second slot 111b about the second central axis OO'. The second slot 111b can be located on the first central axis QQ'. The first slot 111a and the third slot 111c can extend along the first direction D1, and the second slot 111b can extend along the second direction D2. The width of the second slot 111b (i.e. the length along the first direction D1) can be smaller than the width of the first slot 111a (i.e. the length along the second direction D2) and also smaller than the width of the third slot 111c (i.e. the length along the second direction D2).

[0088] In some exemplary implementations, such as Figure 1 As shown, the orthographic projection of the second slot 111b onto the substrate 10 can be a long, narrow rectangle. The first slot 111a can have a connected first portion and a second portion. The first portion and the second portion are approximately symmetrical about the first central axis QQ', and the orthographic projections of both the first portion and the second portion onto the substrate 10 are L-shaped. In this example, the connection point between the first portion and the second portion of the first slot 111a is connected to the second slot 111b. The structure of the third slot 111c can be referenced to the structure of the first slot 111a, and therefore will not be described further here.

[0089] In some exemplary implementations, such as Figure 1 As shown, the first feed structure 21 and the second feed structure 22 are symmetrical about the first central axis QQ'. The following description uses the first feed structure 21 as an example. The first feed structure 21 may include: a first feed body 211a, a second feed body 211b, a first branch, and a second branch. Both the first feed body 211a and the second feed body 211b extend along the first direction D1, and the first feed body 211a and the second feed body 211b are electrically connected. The width of the first feed body 211a (i.e., its length along the second direction D2) is greater than the width of the second feed body 211b (i.e., its length along the second direction D2). One end of the second feed body 211b of the first feed structure 21 is inserted into the first notch 110a of the radiating patch 11.

[0090] In some exemplary implementations, such as Figure 1As shown, the first and second branches of the first feed structure 21 are symmetrically electrically connected to both sides of the first feed body 211a about the second central axis OO'. The first branch of the first feed structure 21 includes a first feed branch 212a and a first open-circuit branch 213a. The first feed branch 212a is electrically connected to the first feed body 211a and the first open-circuit branch 213a, and the first open-circuit branch 213a is located on the side of the first feed branch 212a away from the first feed body 211a. The second branch of the first feed structure 21 includes a second feed branch 212b and a second open-circuit branch 213b. The second feed branch 212b is electrically connected to the first feed body 211a and the second open-circuit branch 213b, and the second open-circuit branch 213b is located on the side of the second feed branch 212b away from the first feed body 211a. The width of the first feed body 211a (i.e., the length along the second direction D2) is greater than the width of the first feed branch 212a (i.e., the length along the first direction D1). The widths of the first feed branch 212a and the first open-circuit branch 213a (i.e., the length along the second direction D2) can be approximately the same. The first feed branch 212a can be adjacent to the first line segment of the first edge 11a of the radiating patch 11, the second feed branch 212b can be adjacent to the fifth line segment of the first edge 11a of the radiating patch 11, the first open-circuit branch 213a can be adjacent to the third edge 11c of the radiating patch 11, and the second open-circuit branch 213b can be adjacent to the fourth edge 11d of the radiating patch 11.

[0091] In some exemplary implementations, such as Figure 1 As shown, the structure of the second feed structure 22 is largely the same as that of the first feed structure 21. Specifically, one end of the second feed body of the second feed structure 22 extends into the second recess 110b of the radiating patch 11. The remaining structure of the second feed structure 22 can be referred to the structural description of the first feed structure 21, and therefore will not be repeated here.

[0092] In some exemplary embodiments, the antenna structure can be obtained using circuit board fabrication processes. However, this embodiment is not limited to this.

[0093] Figure 3 for Figure 1 The simulation results of the gain curve of the antenna structure are shown. In this disclosure, the planar dimension can be expressed as a first length × a second length, where the first length is the length along the first direction D1, and the second length is the length along the second direction D2. The thickness is the dimension in the direction perpendicular to the plane containing the first direction D1 and the second direction D2.

[0094] In some exemplary embodiments, the radiating patch 11, the ground layer 30, the first feed structure 21, and the second feed structure 22 can be made of a metal material with good conductivity, such as any one or more of gold (Au), silver (Ag), copper (Cu), and aluminum (Al), or an alloy made of any one or more of the above metals. In some examples, the material of the radiating patch 11, the ground layer 30, the first feed structure 21, and the second feed structure 22 can be copper (Cu). However, this embodiment is not limited to this.

[0095] In some exemplary embodiments, the planar dimensions of the substrate 10 are approximately 54.00 mm × 50.00 mm. The lengths of the third edge 11c and the fourth edge 11d of the radiating patch 11 are both approximately 40.60 mm, and the distance between the third edge 11c and the fourth edge 11d is approximately 34.50 mm. The length of the first segment of the first edge 11a of the radiating patch 11 is approximately 16.25 mm, the length a7 of the second segment of the first edge 11a is approximately 14.50 mm, and the length a8 of the third segment is approximately 2.00 mm. The length a1 of the first slot 111a of the slotted structure 111 of the radiating patch 11 in the first direction D1 is approximately 39.00 mm, the width a3 of the first slot 111a is approximately 1.00 mm, and the length a2 of the first portion of the first slot 111a along the second direction D2 is approximately 0.50 mm. The distance a5 between the first slot 111a and the third edge 11c is approximately 0.50 mm, and the distance a4 between the first slot 111a and the first line segment of the first edge 11a is approximately 0.80 mm. The length a6 of the second slot 111b along the second direction D2 is approximately 31.50 mm, and the width a9 of the second slot 111b (i.e., the length along the first direction D1) is approximately 0.30 mm.

[0096] In some exemplary implementations, such as Figure 1As shown, the width b1 (i.e., the length along the second direction D2) of the first feed body 211a of the first feed structure 21 is approximately 2.20 mm, and the distance b2 from the end of the first feed body 211a to the first feed branch 212a is approximately 6.00 mm. The distance b5 from the end of the first feed branch 212a near the first open branch 213a to the end of the second feed branch 212b near the second open branch 213b is approximately 40.00 mm, the width b6 (i.e., the length along the first direction D1) of the first feed branch 212a is approximately 0.60 mm, and the length b7 of the first open branch 213a along the first direction D1 is approximately 6.60 mm. The length b3 of the second feed body 211b along the first direction D1 is approximately 14.10 mm, and the width b4 (i.e., the length along the second direction D2) of the second feed body 211b is approximately 0.20 mm. The second spacing c2 between the second power supply main body 211b and the third line segment of the first edge 11a is approximately 0.50 mm, the first spacing between the first power supply branch 212a and the first line segment of the first edge 11a, and the first spacing c1 between the second power supply branch 212b and the fifth line segment of the first edge 11a are approximately 0.10 mm.

[0097] In some exemplary embodiments, the thickness of the antenna structure is approximately 0.013λ0. λ0 represents the vacuum wavelength. Figure 3 As shown, the antenna structure has a gain bandwidth of approximately 3.29 GHz to 3.73 GHz and 4.66 GHz to 5.02 GHz at 0 dBi. The maximum gain in the n78 band is approximately 7.17 dBi, with passband selectivity of approximately -32 dBi and -27 dBi, respectively. The maximum gain in the n79 band is approximately 2.61 dBi, with passband selectivity of approximately -23 dBi and -15 dBi, respectively.

[0098] The antenna structure of this exemplary embodiment has a gain bandwidth that can cover the n78 and n79 frequency bands, and its performance in the n78 frequency band is better than its performance in the n79 frequency band. The antenna structure of this exemplary embodiment can meet the requirements of mobile terminal devices for antenna performance and thinness.

[0099] Figures 4A to 4C for Figure 1 The surface current vector distribution diagram of the radiating patch of the antenna structure is shown. Figure 4A for Figure 1 The surface current vector distribution of the antenna structure shown is at the first radiation null point (i.e., the corresponding frequency point is approximately 3.10 GHz). Figure 4B for Figure 1 The surface current vector distribution of the antenna structure shown is at the second radiation null point (i.e., the corresponding frequency point is approximately 3.88 GHz). Figure 4C for Figure 1The diagram shows the surface current vector distribution of the antenna structure at the third radiation null point (corresponding to a frequency of approximately 5.18 GHz). Figure 4A As shown, under the excitation of the first feed structure 21, the surface current intensity at the edge of the radiating patch 11 in the second direction D2 is the largest, but the current directions are opposite, canceling each other out to form a radiation null point. Figure 4B As shown, when the first feeding structure 21 is excited, the current intensity of the radiating patch 11 is greatest at the notch along the second center line of the radiating patch 11 in the first direction D1. However, in the second direction D2, the surface currents on both sides of the slotted structure are opposite in direction and can cancel each other out to form a radiation zero point. Figure 4C As shown, under the excitation of the first feed structure 21, the surface current intensity is greatest at the corner of the radiating patch 11 in the second direction D2. However, the surface currents on both sides of the slotted structure are opposite in direction and cancel each other out, forming a radiation null point. Figures 4A to 4C It can be seen that by setting a slotted structure in the radiating patch, one radiation null point can be introduced, and by setting two symmetrical feeding structures, the other two radiation null points can be introduced.

[0100] Figure 5 This is another planar schematic diagram of an antenna structure according to at least one embodiment of the present disclosure. Figure 6 for Figure 5 The simulation results of the gain curve of the antenna structure shown are displayed.

[0101] In some exemplary implementations, such as Figure 5 As shown, the spacing between the first feed structure 21 and the radiating patch 11 is different from the spacing between the second feed structure 22 and the radiating patch 11. In this example, the first center line RR' of the radiating patch 11 along the first direction D1 may not coincide with the first central axis of the antenna structure along the first direction D1. The second center line of the radiating patch 11 along the second direction D2 may coincide with the second central axis OO' of the antenna structure along the second direction D2.

[0102] In some exemplary embodiments, the first spacing between the first feed branch 212a and the second feed branch 212b of the first feed structure 21 and the first edge 11a of the radiating patch 11 is smaller than the third spacing between the first feed branch and the second feed branch of the second feed structure 22 and the second edge 11b of the radiating patch 11. The second spacing between the second feed body 211b of the first feed structure 21 and the third segment of the first edge 11a of the radiating patch 11 is smaller than the fourth spacing between the second feed body of the second feed structure 22 and the eighth segment of the second edge 11b of the radiating patch 11. The remaining structure of the antenna structure of this exemplary embodiment can be referred to the description of the foregoing embodiments, and therefore will not be repeated here.

[0103] In some exemplary embodiments, the planar dimensions of the substrate 10 are approximately 56.00 mm × 50.00 mm. The lengths of the third edge 11c and the fourth edge 11d of the radiating patch 11 are both approximately 41.60 mm. The length a8 of the third segment of the first edge 11a of the radiating patch 11 is approximately 2.40 mm. The length a1 of the first slot 111a of the slotted structure 111 of the radiating patch 11 along the first direction D1 is approximately 38.00 mm, the width a3 of the first slot 111a is approximately 1.20 mm, the spacing a4 between the first slot 111a and the first segment of the first edge 11a is approximately 1.80 mm, and the width a9 of the second slot 111b (i.e., the length along the first direction D1) is approximately 0.20 mm. The length b3 of the second feeding body 211b of the first feeding structure 21 along the first direction D1 is approximately 14.60 mm. The first spacing c1 between the first feed branch 212a of the first feed structure 21 and the first edge 11a of the radiating patch 11, and between the second feed branch 212b and the first edge 11a of the radiating patch 11, is approximately 0.60 mm. The second spacing c2 between the second feed body 211b of the first feed structure 21 and the third segment of the first edge 11a is approximately 0.50 mm. The third spacing between the first feed branch and the second feed branch of the second feed structure 22 and the second edge 11b of the radiating patch 11 is approximately 1.10 mm. The fourth spacing c4 between the second feed body of the second feed structure 21 and the eighth segment of the second edge 11b is approximately 1.00 mm.

[0104] For other parameters regarding the antenna structure of this embodiment, please refer to... Figure 1 The description of the illustrated embodiment will not be repeated here.

[0105] In some exemplary embodiments, the thickness of the antenna structure is approximately 0.013λ0. λ0 represents the vacuum wavelength. Figure 6 As shown, the antenna structure has a gain bandwidth of approximately 3.36 GHz to 3.61 GHz and 4.81 GHz to 4.94 GHz at 0 dBi. The maximum gain in the n78 band is approximately 6.30 dBi, with passband selectivity of approximately -31 dBi and -27 dBi, respectively. The maximum gain in the n79 band is approximately 2.96 dBi, with passband selectivity of approximately -24 dBi and -23 dBi, respectively.

[0106] The antenna structure of this exemplary embodiment has a gain bandwidth that can cover the n78 and n79 frequency bands, and its performance in the n78 frequency band is better than its performance in the n79 frequency band. The antenna structure of this exemplary embodiment can meet the requirements of mobile terminal devices for antenna performance and thinness.

[0107] and Figure 1Compared to the simulation results of the antenna structure shown, the bandwidth of the two passbands at 0dBi gain in this example antenna structure is significantly reduced, while the frequency corresponding to the second radiating null (approximately 3.8GHz) remains essentially unchanged. The antenna structure in this example employs an asymmetrical design for the feeding structure and the spacing of the radiating patches, which only affects the symmetry of the current distribution on the left side of the radiating patches and does not affect the leakage characteristics of the antenna structure. According to... Figure 1 and Figure 5 The simulation results of the antenna structure shown indicate that the symmetry of the overall antenna structure is crucial for differentially fed dual-frequency filter antennas.

[0108] Figure 7 This is another planar schematic diagram of an antenna structure according to at least one embodiment of the present disclosure. Figure 8 for Figure 7 The simulation results of the gain curve of the antenna structure shown are displayed.

[0109] In some exemplary implementations, such as Figure 7 As shown, the first edge 11a of the radiating patch 11 includes: a first line segment, a first arc segment, a second line segment, a third line segment, a fourth line segment, a second arc segment, and a fifth line segment connected in sequence. The second edge 11b includes: a sixth line segment, a third arc segment, a seventh line segment, an eighth line segment, a ninth line segment, a fourth arc segment, and a tenth line segment connected in sequence. In this example, the curvature of the first arc segment, the second arc segment, the third arc segment, and the fourth arc segment can be approximately the same. However, this embodiment is not limited to this.

[0110] In some exemplary implementations, such as Figure 7 As shown, the slotted structure 111 of the radiating patch 11 includes a first slot 111a, a second slot 111b, and a third slot 111c. The first slot 111a and the third slot 111c are straight segments extending along a first direction D1. The second slot 111b extends along a second direction D2 and communicates with the first slot 111a and the third slot 111c.

[0111] The remaining structure of the antenna structure in this exemplary embodiment can be referred to the description of the foregoing embodiments, and therefore will not be repeated here.

[0112] In some exemplary embodiments, the planar dimensions of the substrate 10 are approximately 55.00 mm × 50.00 mm. Further parameters regarding the antenna structure of this embodiment can be found in [reference needed]. Figure 1 The description of the illustrated embodiment will not be repeated here.

[0113] In some exemplary embodiments, the thickness of the antenna structure is approximately 0.013λ0. λ0 represents the vacuum wavelength. Figure 8As shown, the antenna structure has a gain bandwidth of approximately 3.27 GHz to 3.66 GHz and 4.67 GHz to 4.94 GHz at 0 dBi. The maximum gain in the n78 band is approximately 7.16 dBi, with passband selectivity of approximately -34 dBi and -28 dBi, respectively. The maximum gain in the n79 band is approximately 2.32 dBi, with passband selectivity of approximately -24 dBi and -18 dBi, respectively.

[0114] The antenna structure of this exemplary embodiment has a gain bandwidth that covers the n78 and n79 frequency bands, with better performance in the n78 band than in the n79 band. The antenna structure of this exemplary embodiment can meet the requirements of mobile terminal devices for antenna performance and thinness. Figure 1 Compared to the antenna structure shown, the antenna structure in this example adjusts the shape of the slotted structure of the radiating patch, as well as the shapes of the first and second edges, but maintains the consistency of the spacing between the first and second feed structures and the radiating patch. Figure 1 Compared to the simulation results of the antenna structure shown, the gain curve of the antenna structure in this example is... Figure 1 The gain curves of the antenna structures shown are basically consistent, indicating that, while maintaining the consistency of the spacing between the first and second feed structures and the radiating patch, making minor adjustments to the slotted structure, the first edge, and the second edge of the radiating patch will not significantly change the performance of the antenna structure.

[0115] Figure 9 This is another planar schematic diagram of an antenna structure according to at least one embodiment of the present disclosure. Figure 10 for Figure 9 The simulation results of the gain curve of the antenna structure shown are displayed.

[0116] In some exemplary implementations, such as Figure 9 As shown, the spacing between the first feed structure 21 and the radiating patch 11 is different from the spacing between the second feed structure 22 and the radiating patch 11. The first slot 111a and the third slot 111c of the slotted structure 111 of the radiating patch 11 can be straight line segments extending along the first direction D1. The remaining structure of the antenna structure of this exemplary embodiment can be referred to the description of the foregoing embodiment, and therefore will not be repeated here.

[0117] In some exemplary embodiments, the planar dimensions of the substrate 10 are approximately 55.00 mm × 50.00 mm. The length a1 of the first slot 111a of the slotted structure 111 of the radiating patch 11 along the first direction D1 is approximately 40.00 mm. The spacing a4 between the first slot 111a and the first line segment of the first edge 11a is approximately 0.80 mm. Further parameters regarding the antenna structure of this embodiment can be found in [reference needed]. Figure 5 The description of the illustrated embodiment will not be repeated here.

[0118] In some exemplary embodiments, the thickness of the antenna structure is approximately 0.013λ0. λ0 represents the vacuum wavelength. Figure 10 As shown, the antenna structure has a gain bandwidth of approximately 3.35 GHz to 3.59 GHz and 4.63 GHz to 4.77 GHz at 0 dBi. The maximum gain in the n78 band is approximately 6.30 dBi, with passband selectivity of approximately -31 dBi and -28 dBi, respectively. The maximum gain in the n79 band is approximately 3.90 dBi, with passband selectivity of approximately -25 dBi and -22 dBi, respectively.

[0119] The antenna structure of this exemplary embodiment has a gain bandwidth that can cover the n78 and n79 frequency bands, and its performance in the n78 frequency band is better than its performance in the n79 frequency band. The antenna structure of this exemplary embodiment can meet the requirements of mobile terminal devices for antenna performance and thinness.

[0120] and Figure 7 Compared to the antenna structure shown, the spacing between the first and second feed structures and the radiating patch in this example antenna structure is different. Figure 7 Compared to the simulation results of the antenna structure shown, the bandwidth of the two passbands at 0dBi gain in this example antenna structure is significantly reduced, while the frequency corresponding to the second radiated null (approximately 3.8GHz) remains essentially unchanged. The antenna structure in this example employs an asymmetrical design for the feeding structure and the spacing of the radiating patches, which only affects the symmetry of the current distribution on the left side of the radiating patches and does not affect the leakage characteristics of the antenna structure.

[0121] and Figure 5 Compared to the antenna structure shown, the antenna structure in this example adjusts the shape of the slotted structure of the radiating patch. Figure 5 Compared to the simulation results of the antenna structure shown, the bandwidth range of the 0dBi gain of the antenna structure in this example shifts to lower frequencies, especially the shift in the high-frequency passband. In this example, changing the slot shape of the radiating patch alters the surface current distribution path. The current intensity is higher at the edges of the radiating patch and the slot gaps. Since the radiating patch and the feed structure are coupled in proximity, the higher the current intensity, the stronger the energy coupling between them. This coupling strength affects the resonant frequency shift of the antenna structure. In this example, the coupling strength between the radiating patch and the feed structure is greater, thus exhibiting a shift to lower frequencies.

[0122] Figure 11 This is another planar schematic diagram of an antenna structure according to at least one embodiment of the present disclosure. Figure 12 for Figure 11 The simulation results of the gain curve of the antenna structure shown are displayed.

[0123] In some exemplary implementations, such as Figure 11 As shown, the slotted structure 111 of the radiating patch 11 includes: a first slot 111a, a second slot 111b, and a third slot 111c. The first slot 111a and the third slot 111c are connected approximately symmetrically about the second central axis OO' to both sides of the second slot 111b. The first slot 111a is approximately symmetrical about the first central axis QQ'. The third slot 111c is approximately symmetrical about the first central axis QQ'. The second slot 111b may be located on the first central axis QQ'.

[0124] In some exemplary implementations, such as Figure 11 As shown, the first slot 111a has a third part, a fourth part, and a fifth part connected in sequence. The third part and the fifth part are symmetrically connected on both sides of the fourth part in the first direction D1. The widths (i.e., the lengths along the second direction D2) of the third part and the fifth part are approximately the same. For example, the third part and the fifth part can be approximately symmetrical about the first central axis OO', and the orthographic projections of the third part and the fifth part on the substrate 10 can both be L-shaped. The fourth part communicates with the second slot 111b. The fourth part is approximately symmetrical about the first central axis OO'. The width of the fourth part gradually decreases along the direction away from the communication position with the second slot 111b until it is approximately the same as the width of the third part. In this example, a chamfer is made at the communication position between the first slot 111a and the second slot 111b, thereby achieving a change in the width of the fourth part of the first slot 111a. The remaining structure of the antenna structure of this exemplary embodiment can be referred to the description of the foregoing embodiments, and therefore will not be repeated here.

[0125] In some exemplary embodiments, the planar dimensions of the substrate 10 are approximately 54.00 mm × 50.00 mm. The width a5 (i.e., the length along the second direction D2) of the first portion of the slot 11a of the radiating patch 11 is approximately 1.00 mm, the distance d1 between the end of the second slot 111b and the third portion of the first slot 111a is approximately 1.00 mm, and the distance d2 between the connection point of the fourth portion of the first slot 111a with the third portion and the connection point of the fourth portion with the second slot 111b is approximately 7.07 mm. In this example, the width of the fourth portion of the first slot 111a can range from approximately 1.00 mm to 2.00 mm. In some examples, the value of d1 can be approximately 1 mm to 7 mm, and the distance along the first direction D1 between the third portion of the first slot 111a and the second slot 111b can be approximately 1 mm to 7 mm. However, this embodiment is not limited to this. Further parameters regarding the antenna structure of this embodiment can be found in [reference needed]. Figure 1 The description of the illustrated embodiment will not be repeated here.

[0126] In some exemplary embodiments, the thickness of the antenna structure is approximately 0.013λ0. λ0 represents the vacuum wavelength. Figure 12 As shown, the antenna structure has a gain bandwidth of approximately 3.32 GHz to 3.78 GHz and 4.66 GHz to 5.01 GHz at 0 dBi. The maximum gain in the n78 band is approximately 7.03 dBi, with passband selectivity of approximately -32 dBi and -28 dBi, respectively. The maximum gain in the n79 band is approximately 3.21 dBi, with passband selectivity of approximately -24 dBi and -18 dBi, respectively.

[0127] The antenna structure of this exemplary embodiment has a gain bandwidth that can cover the n78 and n79 frequency bands, and its performance in the n78 frequency band is better than its performance in the n79 frequency band. The antenna structure of this exemplary embodiment can meet the requirements of mobile terminal devices for antenna performance and thinness.

[0128] and Figure 1 Compared to the antenna structure shown, the antenna structure in this example has its slotted structure of the radiating patch beveled. Figure 1 Compared to the simulation results of the antenna structure shown, the gain curve of the antenna structure in this example and Figure 1 The gain curves of the antenna structures shown are basically consistent, indicating that the chamfering of the slotted structure does not significantly change the performance of the antenna structure. Since the chamfer of the slotted structure in this example is far from the feed structure and is designed symmetrically about the first central axis, it will not have a significant impact on the current distribution on the radiating patch.

[0129] Figure 13 This is another planar schematic diagram of an antenna structure according to at least one embodiment of the present disclosure. Figure 14 for Figure 13 The simulation results of the gain curve of the antenna structure shown are displayed.

[0130] In some exemplary implementations, such as Figure 13 As shown, the slotted structure 111 of the radiating patch 11 includes a first slot 111a, a second slot 111b, and a third slot 111c. The first slot 111a and the third slot 111c are connected to the two ends of the second slot 111b approximately symmetrically about the second central axis OO'. The first slot 111a is approximately symmetrical about the first central axis QQ'. The third slot 111c is approximately symmetrical about the first central axis QQ'. The second slot 111b has a first slit 121 extending along the second direction D2 and a second slit 122 extending along the first direction D1. The first slit 121 may be located on the first central axis QQ', and the second slit 122 may be located on the second central axis OO'. The second slit 122 may be located between the first recess 110a and the second recess 110b of the radiating patch 11 in the first direction D1.

[0131] In some exemplary embodiments, the width of the first slit 121 (i.e., the length along the first direction D1) and the width of the second slit 122 (i.e., the length along the second direction D2) may be approximately the same. The length of the first slit 121 along the second direction D2 may be greater than the length of the second slit 122 along the first direction D1.

[0132] The remaining structure of the antenna structure in this exemplary embodiment can be referred to the description of the foregoing embodiments, and therefore will not be repeated here.

[0133] In some exemplary embodiments, the planar dimensions of the substrate 10 are approximately 54.00 mm × 50.00 mm. The width of the first slot 121 can be approximately 0.30 mm, and the width of the second slot 122 can be approximately 0.30 mm. The distance d3 between the end of the second slot 122 and the first slot 121 in the first direction D1 can be approximately 4.85 mm. In some examples, the width of the second slot 122 can range from approximately 0.3 mm to 2.3 mm, and the value of d3 can range from approximately 2.5 mm to 5.5 mm. However, this embodiment is not limited to these dimensions. Further parameters regarding the antenna structure of this embodiment can be found in [reference needed]. Figure 1 The description of the illustrated embodiment will not be repeated here.

[0134] In some exemplary embodiments, the thickness of the antenna structure is approximately 0.013λ0. λ0 represents the vacuum wavelength. Figure 14 As shown, the antenna structure has a gain bandwidth of approximately 3.28 GHz to 3.71 GHz and 4.62 GHz to 5.01 GHz at 0 dBi. The maximum gain in the n78 band is approximately 7.11 dBi, with passband selectivity of approximately -32 dBi and -27 dBi, respectively. The maximum gain in the n79 band is approximately 2.97 dBi, with passband selectivity of approximately -23 dBi and -17 dBi, respectively.

[0135] The antenna structure of this exemplary embodiment has a gain bandwidth that can cover the n78 and n79 frequency bands, and its performance in the n78 frequency band is better than its performance in the n79 frequency band. The antenna structure of this exemplary embodiment can meet the requirements of mobile terminal devices for antenna performance and thinness.

[0136] and Figure 1 Compared to the antenna structure shown, the antenna structure in this example adjusts the shape of the slotted structure of the radiating patch, introducing a gap. Figure 1 Compared to the simulation results of the antenna structure shown, the gain curve of the antenna structure in this example and Figure 1The gain curves of the antenna structures shown are basically consistent, indicating that the additional slot does not significantly change the performance of the antenna structure. Since the slot introduced in the slotted structure in this example is far from the feed structure and is symmetrically designed about both the first and second central axes, it will not have a significant impact on the current distribution on the radiating patch.

[0137] Figure 15 This is another planar schematic diagram of an antenna structure according to at least one embodiment of the present disclosure. Figure 16 for Figure 15 The simulation results of the gain curve of the antenna structure shown are displayed.

[0138] In some exemplary implementations, such as Figure 15 As shown, the slotted structure 111 of the radiating patch 11 includes a first slot 111a, a second slot 111b, and a third slot 111c. The first slot 111a and the third slot 111c are connected to the two ends of the second slot 111b approximately symmetrically about the second central axis OO'. The first slot 111a is approximately symmetrical about the first central axis QQ'. The third slot 111c is approximately symmetrical about the first central axis QQ'. The second slot 111b has a first slit 121 extending along the second direction D2 and three second slits 122 extending along the first direction D1. The three second slits 122 are arranged sequentially along the second direction D2. The first slit 121 may be located on the first central axis QQ', and the middle second slit 122 may be located on the second central axis OO'. The three second slits 122 are located between the first recess 110a and the second recess 110b of the radiating patch 11 in the first direction D1.

[0139] The remaining structure of the antenna structure in this exemplary embodiment can be referred to the description of the foregoing embodiments, and therefore will not be repeated here.

[0140] In some exemplary embodiments, the planar dimensions of the substrate 10 are approximately 54.00 mm × 50.00 mm. In the second direction D2, the spacing d4 between adjacent second slots 122 can be approximately 0.70 mm. In some examples, the value of d4 can range from approximately 0.5 mm to 1.5 mm. However, this embodiment is not limited to this. Further parameters regarding the antenna structure of this embodiment can be found in [reference needed]. Figure 1 The description of the illustrated embodiment will not be repeated here.

[0141] In some exemplary embodiments, the thickness of the antenna structure is approximately 0.013λ0. λ0 represents the vacuum wavelength. Figure 16As shown, the antenna structure has a gain bandwidth of approximately 3.24 GHz to 3.64 GHz and 4.64 GHz to 4.96 GHz at 0 dBi. The maximum gain in the n78 band is approximately 6.71 dBi, with passband selectivity of approximately -32 dBi and -28 dBi, respectively. The maximum gain in the n79 band is approximately 1.36 dBi, with passband selectivity of approximately -22 dBi and -14 dBi, respectively.

[0142] The antenna structure of this exemplary embodiment has a gain bandwidth that can cover the n78 and n79 frequency bands, and its performance in the n78 frequency band is better than its performance in the n79 frequency band. The antenna structure of this exemplary embodiment can meet the requirements of mobile terminal devices for antenna performance and thinness.

[0143] and Figure 1 Compared to the antenna structure shown, the antenna structure in this example adjusts the shape of the slotted structure of the radiating patch, introducing three slots. Figure 1 Compared to the simulation results of the antenna structure shown, the gain curve of the antenna structure in this example is significantly worse, indicating that the three additional slots significantly alter the performance of the antenna structure. The three additional slots in this example are symmetrically designed about the first and second central axes, and the spacing between adjacent slots in the second direction is approximately 0.5mm to 1.5mm, which does not significantly affect the performance of the antenna structure. However, the three additional slots in this example change the current distribution across the entire radiating patch, therefore, compared to... Figure 1 The performance of the antenna structure shown has deteriorated.

[0144] The antenna structure provided in this exemplary embodiment, by setting a slotted structure in the radiating patch and setting a first feed structure and a second feed structure symmetrical along a first central axis, can realize a dual-band filter antenna structure based on differential feeding. This exemplary embodiment achieves filtering functionality by changing the surface current distribution of the radiating patch and the feed structure through planar structural design. The antenna structure provided in this embodiment can be applied to the n78 and n79 frequency bands of 5G.

[0145] Figure 17 This is a schematic diagram of an electronic device according to at least one embodiment of the present disclosure. Figure 17 As shown, this embodiment provides an electronic device 91, including an antenna structure 922. The electronic device 91 can be any product or component with communication functions, such as a mobile phone, navigation device, game console, television (TV), car audio system, tablet computer, personal multimedia player (PMP), or personal digital assistant (PDA). However, this embodiment is not limited to this.

[0146] Figure 18 This is a plan view of an electronic device according to at least one embodiment of the present disclosure. Figure 19 for Figure 18 A partial cross-sectional view along the P-P' direction. In some exemplary embodiments, electronic device 91 is used as an example of a display device. Figure 18 As shown, in a plane parallel to the electronic device, the electronic device 91 includes: a battery region 910, a first region 911 located on both sides of the battery region 910, and a second region 912. In some examples, a battery is disposed within the battery region 910. The antenna structure 922 may be disposed in at least one of the first region 911 and the second region 912. However, this embodiment is not limited to this. In some examples, the antenna structure may be disposed in the region between the first region 911 and the frame of the electronic device 91, or in the region between the second region 912 and the frame of the electronic device 91.

[0147] In some exemplary embodiments, an antenna structure 922 is disposed in the first region 911 as an example. Figure 19 As shown, in a plane perpendicular to the electronic device, the electronic device 91 includes: a back cover 921, an antenna structure 922, a housing 923, a printed circuit board 924, a display screen 925, and a glass cover 926. The glass cover 926 is in close contact with the display screen 925 and can protect the display screen 925 from dust. The housing 923 mainly serves to support the entire device. The antenna structure 922 can be mounted on the back cover 921 and connected to the printed circuit board 924 through an opening in the housing 923. However, this embodiment is not limited to this.

[0148] The accompanying drawings in this disclosure only illustrate the structures relevant to this disclosure; other structures can be referenced to common designs. Unless otherwise specified, embodiments of this disclosure and features thereof can be combined to obtain new embodiments.

[0149] Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions disclosed herein without departing from the spirit and scope of the technical solutions disclosed herein, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An antenna structure, comprising: Substrate, grounding layer, radiating patch, first power feeding structure and second power feeding structure; The radiating patch, the first feeding structure, and the second feeding structure are located on the first surface of the substrate, and the ground layer is located on the second surface of the substrate; The first surface and the second surface are two surfaces of the substrate that are opposite to each other; The radiating patch has a slotted structure; In the first direction, the first feeding structure and the second feeding structure are symmetrically located on both sides of the radiating patch; The slotted structure has a first slot, a second slot, and a third slot; the first slot and the third slot are symmetrically connected on both sides of the second slot about a second center line in a second direction, the second slot communicates with the first slot and the third slot, and the second direction intersects the first direction; The second slot includes a first slit extending along the second direction and three second slits extending along the first direction; the three second slits are arranged sequentially along the second direction, and the first slit and the three second slits are in communication; The first gap is located on the first central axis along the first direction, and the middle second gap of the three second gaps is located on the second central axis along the second direction; In a plane parallel to the substrate, the radiating patch has a first edge and a second edge in the first direction, the radiating patch has a first notch at the first edge and a second notch at the second edge; The three second slits are located in the first direction between the first and second notches of the radiation patch.

2. The antenna structure according to claim 1, wherein, The radiating patch is configured to introduce two resonant frequencies and a radiating null point located between the two resonant frequencies, and the first and second feeding structures are configured to introduce two additional radiating null points.

3. The antenna structure according to claim 1, wherein, The slotted structure is symmetrical about the first centerline of the radiating patch in the first direction, and about the second centerline of the radiating patch in the second direction.

4. The antenna structure according to claim 3, wherein, The orthographic projection of the slotted structure onto the substrate is H-shaped.

5. The antenna structure according to claim 1, wherein, The width of the second slot is smaller than the width of the first slot.

6. The antenna structure according to claim 1, wherein, The orthographic projections of the first and third slots on the substrate are straight line segments parallel to the second direction.

7. The antenna structure according to claim 3, wherein, The first slot has a first part and a second part that are connected; the orthographic projection of the first part and the second part on the substrate is L-shaped, and the first part and the second part are symmetrical about the first center line.

8. The antenna structure according to claim 1, wherein, The first slot has a third, a fourth, and a fifth portion that are connected; the third and fifth portions are symmetrically connected on both sides of the fourth portion in the first direction; the fourth portion is connected to the second slot, and the width of the fourth portion gradually decreases along the direction away from the position connected to the second slot until it is the same as the width of the third portion.

9. The antenna structure according to claim 1, wherein, The orthographic projection of the second slot on the substrate is a straight line segment parallel to the first direction.

10. The antenna structure according to claim 3, wherein, Any second slit is symmetrical about the first center line, and the three second slits are symmetrical about the second center line.

11. The antenna structure according to any one of claims 1 to 10, wherein, The first feeding structure is adjacent to the first edge, and the second feeding structure is adjacent to the second edge; The distance between the first feeding structure and the first edge of the radiating patch is less than or equal to the distance between the second feeding structure and the second edge of the radiating patch.

12. The antenna structure according to claim 11, wherein, At least a portion of the first power supply structure is located within the first recess, and at least a portion of the second power supply structure is located within the second recess.

13. The antenna structure according to claim 12, wherein, The first power supply structure includes: a power supply body, a first branch and a second branch; the first branch and the second branch are electrically connected symmetrically to both sides of the power supply body about the centerline of the first power supply structure in a second direction.

14. The antenna structure according to claim 13, wherein, The power supply body includes: a first power supply body and a second power supply body connected in sequence; the first branch and the second branch are symmetrically connected on both sides of the first power supply body about the center line of the first power supply structure in a second direction; the width of the first power supply body is greater than the width of the second power supply body, and at least a portion of the second power supply body is located within the first notch of the radiating patch.

15. The antenna structure according to claim 14, wherein, The first branch includes: a first power supply branch and a first open circuit branch; the first power supply branch is electrically connected to the first power supply main body and the first open circuit branch, and the first open circuit branch is located on the side of the first power supply branch away from the first power supply main body; The second branch includes: a second power supply branch and a second open circuit branch; the second power supply branch is electrically connected to the first power supply body and the second open circuit branch, and the second open circuit branch is located on the side of the second power supply branch away from the first power supply body.

16. The antenna structure according to claim 15, wherein, The first open branch and the second open branch are straight line segments parallel to the first direction.

17. The antenna structure according to claim 1, wherein, The orthographic projections of the radiating patch, the first feeding structure, and the second feeding structure onto the substrate do not overlap.

18. An electronic device comprising an antenna structure as claimed in any one of claims 1 to 17.

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