Antenna structure and electronic device

Abstract

The embodiments of the present application relate to the technical field of antennas. Provided are an antenna structure and an electronic device, which are used for realizing a dual-beam antenna structure. The antenna structure comprises a power divider extending in a first direction, an input end arranged on the power divider, and a first radiation portion and a second radiation portion which are located on two opposite sides of the power divider, wherein the input end is located between the first radiation portion and the second radiation portion; and in the direction of thickness of the power divider, the first radiation portion and the second radiation portion are located on the same side of the power divider. In the antenna structure provided in the embodiments of the present application, in the first direction, radiation gains mutually suppress and cancel each other out in opposite directions, such that the gain is relatively small; and in a direction perpendicular to the first direction, radiation gains mutually superimpose and enhance each other in the same direction, such that the gain is relatively large.

Description

Antenna structure and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on November 21, 2023, with application number 202311563326.0 and application name “Antenna Structure and Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of antenna technology, and in particular to an antenna structure and an electronic device. Background Art

[0003] With the development of wireless local area networks (WLANs), their usage scenarios, product specifications, and frequency bands are constantly expanding. As WLAN usage scenarios change, the requirements for the radiation direction, radiation intensity, and radiation range of antenna structures also vary.

[0004] How to combine the radiation direction of the antenna structure with the usage scenario is the problem that needs to be solved at present.

[0005] Summary of the Invention

[0006] Embodiments of the present application provide an antenna structure and an electronic device for implementing a dual-beam antenna structure.

[0007] To achieve the above objectives, this application adopts the following technical solutions:

[0008] A first aspect of an embodiment of the present application provides an antenna structure comprising a power divider extending along a first direction, an input terminal disposed on the power divider, and a first radiating portion and a second radiating portion located on opposite sides of the power divider. The input terminal is located between the first radiating portion and the second radiating portion. The first radiating portion and the second radiating portion are located on the same side of the power divider along the thickness direction of the power divider.

[0009] In the antenna structure provided by the embodiment of the present application, the electrical signal is transmitted to the power divider through the input end and output by the first radiating part and the second radiating part. The radiation gains of the first radiating part and the second radiating part in the first direction suppress each other and cancel each other in opposite directions to form a zero point. The radiation gains of the first radiating part and the second radiating part in the direction perpendicular to the first direction are superimposed on each other and enhanced in the same direction. This makes the radiation gain of the antenna structure smaller in the first direction and larger in the direction perpendicular to the first direction. In addition, in the solution of the embodiment of the present application, the plane where the power divider is located intersects with the plane where the first radiating part and the second radiating part are located, so that the radiation gains can also be superimposed on the plane perpendicular to the power divider. Therefore, deploying the antenna structure provided by the embodiment of the present application in the corridor can improve the signal coverage in the room, while reducing interference between directions along the corridor, thereby improving the concurrent performance effect under networking.

[0010] The antenna structure provided in the embodiment of the present application has a simple installation process, simple assembly, low assembly complexity, low cost, and can be applied to surface mount technology (SMT) process.

[0011] In one possible implementation, the first radiating portion and the second radiating portion both extend along the thickness direction of the power divider, and the thickness direction of the power divider intersects with the plane where the power divider is located. Thus, the plane where the first radiating portion and the second radiating portion are located intersects with the plane where the power divider is located.

[0012] In one possible implementation, the antenna structure further includes a connecting portion disposed between the first radiating portion and the second radiating portion and connected to the input terminal; the connecting portion and the first radiating portion are located on the same side of the power divider along the thickness direction of the power divider. In this way, the power divider can be fed through the connecting portion.

[0013] In a possible implementation, the first radiating portion and the second radiating portion are symmetrically arranged about the connecting portion, so that the gain of the antenna structure in the first direction is minimum.

[0014] In one possible implementation, along the thickness of the power divider, the difference between any two of the distances between the surface of the first radiating portion away from the power divider and the plane on which the power divider lies, the distance between the surface of the second radiating portion away from the power divider and the plane on which the power divider lies, and the distance between the surface of the connecting portion away from the power divider and the plane on which the power divider lies is less than 0.1 mm. This allows the coplanarity of the first radiating portion, the second radiating portion, and the connecting portion to be less than 0.1 mm, thereby improving the reliability of the SMT process.

[0015] In one possible implementation, along the thickness direction of the power divider, the distance between the surface of the first radiating portion remote from the power divider and the plane on which the power divider is located, and the distance between the surface of the first radiating portion remote from the power divider and the plane on which the power divider is located, are both less than 8 mm. This meets SMT assembly requirements.

[0016] In one possible implementation, the maximum dimension of the power divider along the third direction is greater than 1 mm; the third direction intersects the first direction, and the plane formed by the third direction and the first direction is parallel to the plane of the power divider. This can increase the electrical size of the antenna structure.

[0017] In one possible implementation, along the direction from the input end to the first radiating portion, the size of the power divider increases in the third direction. In this way, the antenna structure provided by the embodiment of the present application has multiple implementations.

[0018] In one possible implementation, along the direction from the input end to the second radiating portion, the size of the power divider in the third direction increases. In this way, the antenna structure provided by the embodiment of the present application has multiple implementations.

[0019] In one possible implementation, along the first direction, the size of the power divider is 0.5λ to 0.8λ, where λ is the wavelength corresponding to the operating frequency of the antenna structure. This can increase the electrical size of the antenna structure.

[0020] In one possible implementation, the power divider, the first radiating portion, and the second radiating portion are integrally formed, thereby eliminating the need for manual assembly, reducing costs, and improving the integration of the antenna structure.

[0021] In one possible implementation, the antenna structure further includes a circuit board and a connecting portion; the connecting portion is disposed between the first radiating portion and the second radiating portion and connected to the input terminal; the connecting portion and the first radiating portion are located on the same side of the power divider along the thickness direction of the power divider; the first radiating portion is electrically connected to a first pad on the circuit board, the second radiating portion is electrically connected to a second pad on the circuit board, and the connecting portion is electrically connected to a third pad on the circuit board. In this manner, the antenna structure does not require cable feeding.

[0022] In one possible implementation, the first and second pads are used for grounding, and the third pad is used for transmitting a feeding signal. In this way, the antenna structure does not need to be fed by a cable.

[0023] In one possible implementation, the distance between the edge of the power divider and the edge of the circuit board is greater than 10 mm. This allows the downtilt angle coverage of the dual-beam gain to be larger when the antenna structure is ceiling-mounted.

[0024] In one possible implementation, the first radiating portion and the second radiating portion both include monopole radiators. Thus, the antenna structure provided in the embodiment of the present application has multiple implementations.

[0025] According to a second aspect of the embodiments of the present application, an electronic device is provided, comprising the antenna structure of any one of the first aspects and a housing, wherein the antenna structure is located inside the housing.

[0026] The electronic device provided in the second aspect of the embodiment of the present application includes the antenna structure of any one of the first aspects, and its beneficial effects are the same as those of the antenna structure, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic diagram of a network architecture provided in an embodiment of the present application;

[0028] FIG2A is a schematic diagram showing radiation of an antenna structure;

[0029] FIG2B is a schematic diagram showing the radiation of another antenna structure;

[0030] FIG3 is a schematic diagram of a wireless AP deployment provided in an embodiment of the present application;

[0031] FIG4 is a schematic diagram of another wireless AP deployment provided in an embodiment of the present application;

[0032] FIG5 is a schematic structural diagram of an antenna structure provided in an embodiment of the present application;

[0033] FIG6 is a front view of an antenna structure provided in an embodiment of the present application;

[0034] FIG7 is a schematic structural diagram of another antenna structure provided in an embodiment of the present application;

[0035] FIG8 is a top view of an antenna structure provided in an embodiment of the present application;

[0036] FIG9 is a schematic structural diagram of another antenna structure provided in an embodiment of the present application;

[0037] FIG10A is a simulation diagram of the radiation intensity of an antenna provided in an embodiment of the present application;

[0038] FIG10B is a simulation diagram of the radiation intensity of another antenna provided in an embodiment of the present application;

[0039] FIG10C is a simulation diagram of the radiation intensity of another antenna provided in an embodiment of the present application;

[0040] FIG11 is an antenna radiation pattern provided in an embodiment of the present application.

[0041] Reference numerals

[0042] 100-antenna structure; 11-structural component; 101-first antenna; 102-second antenna; 103-first docking point; 104-second docking point; 110-power divider; 210-first radiating part; 220-second radiating part; 230-connecting part; 310-first soldering pad; 320-second soldering pad; 330-third soldering pad; 300-circuit board; 410-input end; 421-first output end; 422-second output end. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0044] Hereinafter, the terms "second," "first," etc., are used for descriptive convenience only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature qualified as "second," "first," etc., may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0045] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left", and "right" may be defined including but not limited to the orientation relative to the schematic placement of the components in the drawings. It should be understood that these directional terms may be relative concepts, which are used for relative descriptions and clarifications, and may change accordingly according to changes in the orientation of the components in the drawings.

[0046] In the embodiments of this application, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, "connection" can mean fixed connection, detachable connection, or integration; it can mean direct connection or indirect connection through an intermediate medium. In addition, the term "coupling" can mean direct electrical connection or indirect electrical connection through an intermediate medium. The term "contact" can mean direct contact or indirect contact through an intermediate medium.

[0047] In the embodiments of the present application, "and / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0048] For ease of understanding, the relevant technical terms involved in the embodiments of this application are explained and described below.

[0049] Wireless AP: The term "access point" (AP) is a broad term encompassing not only simple wireless access points (APs) but also wireless routers (including wireless gateways and wireless bridges). A wireless AP supports 2.4GHz wireless applications and utilizes dual RF outputs, each with a maximum output of 600 milliwatts. This allows for wireless coverage over large areas through wireless distribution systems (point-to-point and point-to-multipoint bridging), making it an essential wireless AP for hotels and guesthouses developing wireless networks.

[0050] A home gateway is a network device located within a modern home. Its function is to connect home users to the Internet, enabling various smart devices in the home to access Internet services and enabling communication between these smart devices. Simply put, a home gateway acts as a bridge, connecting various smart devices within the home and connecting them to external networks. Technically, a home gateway performs bridging / routing, protocol conversion, address management, and translation within the home and between the home and external networks. It also acts as a firewall and provides services such as voice over internet protocol (VoIP) and video over internet protocol (Voice over IP).

[0051] Omnidirectional antennas radiate uniformly across 360° in the horizontal pattern, known as non-directional. Vertically, they exhibit a beam with a certain width. Generally, the smaller the beam width, the greater the gain. In mobile communication systems, omnidirectional antennas are generally used in large, suburban area base stations for wide coverage.

[0052] Beamwidth: The angle between the two half-power points of the beam. It is related to antenna gain. Generally, the greater the antenna gain, the narrower the beam and the higher the detection angular resolution. Beamwidth is divided into horizontal beamwidth and vertical beamwidth.

[0053] Horizontal beamwidth: The angle between the two directions in the horizontal direction where the antenna gain drops by 3dB on both sides of the maximum radiation direction.

[0054] Vertical beamwidth: The angle between the two directions in the vertical direction, on both sides of the maximum radiation direction, where the antenna gain drops by 3dB.

[0055] Electrical length: refers to the ratio of physical length (i.e. mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave.

[0056] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0057] The embodiments of the present application illustrate an electronic device. This electronic device may be, for example, a wireless access point (AP), a home gateway, a home hotspot, or customer premise equipment (CPE). The embodiments of the present application do not impose any particular limitations on the specific form of the electronic device. For ease of explanation, the following embodiments utilize a wireless AP as an example.

[0058] A network architecture including the above-mentioned wireless AP is shown in FIG1 . As shown in FIG1 , the network architecture includes a server, a wireless access point (AP) device, and a terminal device.

[0059] The electronic device provided in the embodiments of the present application is a wireless access point (AP). The AP connects a network (the Internet) to a terminal device. The network is connected to a server, which receives a signal from the server and transmits it to the AP. The antenna in the AP then transmits the signal to each terminal device.

[0060] For example, as shown in FIG1 , the wireless APs include AP1 and AP2 , and the terminal devices include terminal device 1 , terminal device 2 , terminal device 3 , and terminal device 4 .

[0061] As shown in Figure 1, terminal devices 1 and 2 are data connected to AP1, and terminal devices 3 and 4 are data connected to AP2. The data connections between the terminal devices and the wireless APs can be wired or wireless, which is not limited in this embodiment of the present application.

[0062] Exemplarily, terminal device 1 is connected to AP1 via a wired connection, terminal device 2 is connected to AP1 via a wireless connection, terminal device 3 is connected to AP2 via a wired connection, and terminal device 4 is connected to AP2 via a wireless connection.

[0063] In some embodiments, the terminal device may include a smart phone, a smart home (such as an air conditioner, an electric fan, a washing machine, a refrigerator, etc.), a smart TV, and a smart security (such as a camera).

[0064] The antenna included in the wireless AP can be a low-frequency antenna or a high-frequency antenna. For example, the low-frequency antenna can be a 2G antenna or a 3G antenna, and the high-frequency antenna can be a 5G antenna or a 6G antenna.

[0065] The embodiment of the present application does not limit the operating frequency of the antenna in the wireless AP, and it can be reasonably set according to actual conditions.

[0066] Based on this, an embodiment of the present application further illustrates a wireless AP, which includes a housing and an antenna structure disposed in the housing.

[0067] Exemplarily, the antenna structure may include an omnidirectional antenna.

[0068] Figure 2A shows a schematic diagram of the radiation intensity of an omnidirectional antenna. As can be seen from Figure 2A, in the horizontal direction (the plane formed by the x and z directions), the signal radiates omnidirectionally. In other words, the signal radiates evenly throughout 360°, meaning it has no directionality.

[0069] Alternatively, the antenna structure may include a dual-beam antenna, for example.

[0070] Figure 2B shows a schematic diagram of the radiation intensity of a dual-beam antenna. As can be seen from Figure 2B, in the horizontal pattern, the signal exhibits mainlobe gain and null suppression. As shown in Figure 2B, the signal gain is more pronounced in the z-direction, while the gain in the x-direction is smaller. The x- and z-directions intersect.

[0071] Figure 3 illustrates a specific application scenario for an electronic device (wireless AP) provided by an embodiment of the present application. As shown in Figure 3 , in a dormitory scenario, rooms are located on both sides of a corridor. From a wireless LAN and cost perspective, deploying wireless APs in corridors is more effective than deploying APs in rooms because fewer wireless APs are required when deployed in corridors.

[0072] Exemplarily, the wireless AP is ceiling-mounted and deployed in a corridor, and multiple wireless APs are arranged at intervals.

[0073] In this way, the radiation of the wireless AP can cover the rooms on both sides of the corridor.

[0074] This diagram illustrates a deployment method for a wireless AP, which includes an omnidirectional antenna. As shown in Figure 3, the AP gain is higher in the direction x along the corridor.

[0075] Along corridors, wireless AP radiation doesn't need to penetrate walls. This occurs in the corridor direction x. Multipath signals overlap, causing slower signal attenuation. This also creates strong interference between adjacent wireless APs, impacting channel reuse when networking multiple wireless APs. However, radiation from rooms does need to penetrate walls, causing significant signal attenuation before reaching the interior, resulting in lower signal strength inside the room. Consequently, signal strength inside rooms is lower than that in corridors.

[0076] Another example of wireless AP deployment is shown in Figure 4. This wireless AP uses a dual-beam antenna. As shown in Figure 4, the signal radiates in a fan-shaped pattern into the rooms on both sides of the corridor, and interference between adjacent wireless APs is relatively weak.

[0077] Compared to omnidirectional antennas, dual-beam antennas form a null in the corridor's beam, significantly suppressing gain dropout. This significantly reduces interference between wireless APs and increases signal strength within the room, improving overall network throughput. Therefore, dual-beam antennas offer superior beam matching in dormitories.

[0078] Based on this, in order to realize a low-cost antenna structure with dual-beam gain, an embodiment of the present application provides an antenna structure. As shown in FIG5 , the antenna structure 100 includes a power divider 110 and a first radiating portion 210 and a second radiating portion 220 located on opposite sides of the power divider 110 .

[0079] As shown in FIG. 5 , the power divider 110 extends along a first direction x.

[0080] The power divider 110 has an input terminal 410, a first output terminal 421, and a second output terminal 422. The first output terminal 421 and the second output terminal 422 are located on opposite sides of the power divider 110. The input terminal 410 is located between the first output terminal 421 and the second output terminal 422.

[0081] Along the first direction x, the first radiating portion 210 and the second radiating portion 220 are respectively located on two opposite sides of the power divider 110 .

[0082] The first radiating portion 210 is connected to the first output end 421 , and the second radiating portion 220 is connected to the second output end 422 .

[0083] For ease of understanding, the extension direction of the power divider 110 is referred to as the first direction x, the thickness direction of the power divider 110 is referred to as the second direction y, and the width direction of the power divider 110 is referred to as the third direction z. In other words, the plane formed by the first direction x and the third direction z is parallel to the plane on which the power divider 110 is located, and the thickness direction of the power divider 110 intersects with the plane on which the power divider 110 is located.

[0084] It is clarified here that the first direction x, the second direction y, and the third direction z intersect with each other. That is, the first direction x and the second direction y intersect, the second direction y intersects with the third direction z, and the first direction x intersects with the third direction z. For example, the first direction x and the second direction y are perpendicular, the second direction y is perpendicular to the third direction z, and the first direction x is perpendicular to the third direction z. In other words, the first direction x, the second direction y, and the third direction z are perpendicular to each other.

[0085] As shown in FIG. 5 , the first radiating portion 210 and the second radiating portion 220 are located on the same side of the power divider 110 along the thickness direction y of the power divider 110 .

[0086] That is, the first radiating portion 210 and the second radiating portion 220 are located on the same side of the power divider 110 along the second direction y.

[0087] 5 , the first radiating portion 210 extends in the same direction as the second radiating portion 220 , and both the first radiating portion 210 and the second radiating portion 220 extend along the thickness direction (second direction) y of the power divider 110 .

[0088] In other words, both the first radiating portion 210 and the second radiating portion 220 extend in a direction intersecting the plane of the power divider 110. Specifically, the first radiating portion 210 extends in a direction intersecting the plane of the power divider 110, and the second radiating portion 220 extends in a direction intersecting the plane of the power divider 110, and the first radiating portion 210 and the second radiating portion 220 are located on the same side of the power divider 110.

[0089] In some embodiments, the power divider 110 , the first radiating portion 210 , and the second radiating portion 220 are integrally formed.

[0090] In this way, manual assembly is unnecessary, costs are reduced, and the integration of the antenna structure 100 is improved.

[0091] For example, as shown in FIG5 , along the third direction z, the dimension W of the power divider 110 is greater than 1 mm. That is, in the width direction, the dimension W of the power divider 110 is greater than 1 mm. That is, the width of the power divider 110 is greater than 1 mm. For example, the dimension W of the power divider 110 along the third direction z is 1.5 mm, 2 mm, 3 mm, 4 mm, or 5 mm.

[0092] It is explained here that the dimension W of the power divider 110 in the third direction z is the maximum dimension of the power divider 110 in the third direction z.

[0093] In this way, the electrical size of the antenna structure 100 can be increased.

[0094] Exemplarily, along the third direction z, the size of the first radiating portion 210 is greater than 1 mm, and the size of the second radiating portion 220 is greater than 1 mm.

[0095] Along the third direction z, the size of the first radiating portion 210 and the size of the second radiating portion 220 may be the same as the size of the power divider 110 , or may be different.

[0096] For example, along the direction from the input end 410 (connecting portion 230 ) to the first radiating portion 210 , the size of the power divider 110 in the third direction z increases.

[0097] Alternatively, for example, the size of the power divider 110 increases in the third direction z along the direction from the input end 410 (connecting portion 230) to the second radiating portion 220. The embodiment of the present application does not limit the shape of the power divider 110, which can be reasonably set according to actual conditions.

[0098] For example, as shown in FIG6 , along the first direction x, the dimension L1 of the power divider 110 is in the range of 0.5λ to 0.8λ, where λ is the wavelength corresponding to the operating frequency of the antenna structure 100. For example, the dimension L1 of the power divider 110 along the first direction x is 0.5λ, 0.6λ, 0.7λ, or 0.8λ, etc.

[0099] For example, as shown in FIG6 , along the thickness direction (second direction) y of the power divider 110, the distance d1 between the surface of the first radiating portion 210 away from the power divider 110 and the plane where the power divider 110 is located is less than 8 mm, and the distance d1 between the surface of the second radiating portion 220 away from the power divider 110 and the plane where the power divider 110 is located is less than 8 mm.

[0100] That is, a dimension d1 of the first radiating portion 210 in the second direction y is less than 8 mm, and a dimension d2 of the second radiating portion 220 in the second direction y is less than 8 mm.

[0101] It should be noted that in some embodiments, the first radiating portion 210 or the second radiating portion 220 may be curved or irregularly shaped. In this case, the dimension of the first radiating portion 210 in the second direction y is the linear distance of the first radiating portion 210 in the second direction y. In other words, only the distance between the surface of the first radiating portion 210 away from the power divider 110 and the plane on which the power divider 110 lies, and the distance between the surface of the second radiating portion 220 away from the power divider 110 and the plane on which the power divider 110 lies, are considered.

[0102] For example, the dimension d1 of the first radiating portion 210 in the second direction y may be 7 mm, 6 mm, 5 mm, 4 mm, 3 mm, 2 mm, or 1 mm, etc. The dimension d2 of the second radiating portion 220 in the second direction y may be 7 mm, 6 mm, 5 mm, 4 mm, 3 mm, 2 mm, or 1 mm, etc.

[0103] In this way, the overall size of the antenna structure 100 in the second direction y is less than 8 mm. Compared with the existing antenna structure, the antenna structure 100 provided in the embodiment of the present application has a lower size in the second direction y (i.e., the cross-sectional height), which can meet the assembly requirements of surface mounted technology (SMT) and facilitate the SMT process of the antenna structure 100.

[0104] For example, the first radiating portion 210 may include a monopole radiator, and the second radiating portion 220 may include a monopole radiator.

[0105] In the implementation of the present application, the input end 410 of the power divider 110 is connected to a signal line, and the antenna structure 100 is fed through the signal line.

[0106] Since the power divider 110 is connected to both the first radiating portion 210 and the second radiating portion 220 , signals are transmitted to the first radiating portion 210 and the second radiating portion 220 through the power divider 110 .

[0107] In addition, the first radiating portion 210 and the second radiating portion 220 are both grounded.

[0108] That is, a side of the first radiating portion 210 away from the power divider 110 is grounded, and a side of the second radiating portion 220 away from the power divider 110 is grounded.

[0109] In this way, passages are formed in the first radiating portion 210 and the second radiating portion 220 , respectively.

[0110] In some embodiments, as shown in FIG. 5 , the antenna structure 100 further includes a connecting portion 230 .

[0111] The connecting portion 230 is located on the power divider 110 , and the connecting portion 230 is connected to the input terminal 410 of the power divider 110 .

[0112] As shown in FIG5 , the connecting portion 230 is disposed between the first radiating portion 210 and the second radiating portion 220, and the connecting portion 230 and the first radiating portion 210 are located on the same side of the power divider 110 along the thickness direction (second direction) y of the power divider 110. The connecting portion 230 and the second radiating portion 220 are located on the same side of the power divider 110 along the thickness direction (second direction) y of the power divider 110.

[0113] That is, the connecting portion 230 is disposed in the same direction as the first radiating portion 210 and the second radiating portion 220 .

[0114] In the embodiment of the present application, the power divider 110 may also be fed with power through the connection portion 230 .

[0115] Exemplarily, the first radiating portion 210 and the second radiating portion 220 are symmetrically arranged about the connecting portion 230 .

[0116] That is, the connecting portion 230 is located in the middle of the power divider 110 .

[0117] In this way, the gain of the antenna structure 100 in the first direction x is minimum.

[0118] In the embodiment of the present application, the output power and phase of the power divider 110 can be adjusted according to the distance between the first radiating portion 210 , the second radiating portion 220 and the connecting portion 230 .

[0119] Exemplarily, as shown in FIG6 , a distance d3 between a surface of the connecting portion 230 away from the power divider 110 and a plane where the power divider 110 is located is less than 8 mm.

[0120] That is, the dimension d3 of the connecting portion 230 in the second direction y is less than 8 mm. For example, the dimension d3 of the connecting portion 230 in the second direction y can be 7 mm, 6 mm, 5 mm, 4 mm, 3 mm, 2 mm, or 1 mm.

[0121] It should be noted that in some embodiments, the connection portion 230 may be curved or irregularly shaped. In this case, the dimension of the connection portion 230 in the second direction y is the linear distance of the connection portion 230 in the second direction y. In other words, only the distance between the surface of the connection portion 230 away from the power divider 110 and the plane on which the power divider 110 is located is considered.

[0122] In the embodiment of the present application, a dimension d1 of the first radiating portion 210 in the second direction y, a dimension d2 of the second radiating portion 220 in the second direction y, and a dimension d3 of the connecting portion 230 in the second direction y are all less than 8 mm.

[0123] In some embodiments, the difference between any two of the distance d1 between the surface of the first radiating portion 210 away from the power divider 110 and the plane where the power divider 110 is located, the distance d2 between the surface of the second radiating portion 220 away from the power divider 110 and the plane where the power divider 110 is located, and the distance d3 between the surface of the connecting portion 230 away from the power divider 110 and the plane where the power divider 110 is located is less than 0.1 mm.

[0124] That is, along the second direction y, the difference between any two of the dimension d1 of the first radiating portion 210 , the dimension d2 of the second radiating portion 220 , and the dimension d3 of the connecting portion 230 is less than 0.1 mm.

[0125] Illustratively, the difference between the distance d1 between the surface of the first radiating portion 210 away from the power divider 110 and the plane where the power divider 110 is located and the distance d2 between the surface of the second radiating portion 220 away from the power divider 110 and the plane where the power divider 110 is located is less than 0.1 mm. The difference between the distance d1 between the surface of the first radiating portion 210 away from the power divider 110 and the plane where the power divider 110 is located and the distance d3 between the surface of the connecting portion 230 away from the power divider 110 and the plane where the power divider 110 is located is less than 0.1 mm. The difference between the distance d1 between the surface of the first radiating portion 210 away from the power divider 110 and the plane where the power divider 110 is located and the distance d3 between the surface of the connecting portion 230 away from the power divider 110 and the plane where the power divider 110 is located is less than 0.1 mm.

[0126] That is, the coplanarity of the first radiating portion 210 , the second radiating portion 220 , and the connecting portion 230 is less than 0.1 mm. For example, the coplanarity may be 0.09 mm, 0.07 mm, 0.05 mm, 0.03 mm, 0.02 mm, or 0.

[0127] The distance d1 between the surface of the first radiating portion 210 away from the power divider 110 and the plane where the power divider 110 is located, the distance d2 between the surface of the second radiating portion 220 away from the power divider 110 and the plane where the power divider 110 is located, and the distance d3 between the surface of the connecting portion 230 away from the power divider 110 and the plane where the power divider 110 is located can be the same or different. This embodiment of the present application does not limit this, and it can be reasonably set according to actual conditions, as long as the difference between any two of the three is less than 0.1 mm.

[0128] For example, the distance d1 between the surface of the first radiating portion 210 away from the power divider 110 and the plane where the power divider 110 is located, the distance d2 between the surface of the second radiating portion 220 away from the power divider 110 and the plane where the power divider 110 is located, and the distance d3 between the surface of the connecting portion 230 away from the power divider 110 and the plane where the power divider 110 is located are the same. In other words, the dimension d1 of the first radiating portion 210 in the second direction y, the dimension d2 of the second radiating portion 220 in the second direction y, and the dimension d3 of the connecting portion 230 in the second direction y are the same.

[0129] In other words, the plane formed by one end of the first radiating portion 210 away from the power divider 110 , one end of the second radiating portion 220 away from the power divider 110 , and one end of the connecting portion 230 away from the power divider 110 is parallel to the plane of the power divider 110 .

[0130] In this way, the reliability of the SMT process can be improved.

[0131] In some embodiments, as shown in FIG. 7 , the antenna structure 100 further includes a circuit board 300 .

[0132] As shown in FIG. 7 , the first radiating portion 210 is connected to the first pad 310 on the circuit board 300 , the second radiating portion 220 is connected to the second pad 320 on the circuit board 300 , and the connecting portion 230 is connected to the third pad 330 on the circuit board 300 .

[0133] That is, the first radiation portion 210 is electrically connected to the circuit board 300 through the first pad 310 , the second radiation portion 220 is electrically connected to the circuit board 300 through the second pad 320 , and the connection portion 230 is electrically connected to the circuit board 300 through the third pad 330 .

[0134] Exemplarily, the first pad 310 and the second pad 320 are used for grounding, and the third pad 330 is used for transmitting a feeding signal.

[0135] That is, the first soldering pad 310 and the second soldering pad 320 are connected to the ground terminal of the circuit board 300 , and the third soldering pad 330 is connected to the signal terminal of the circuit board 300 .

[0136] Exemplarily, the coplanarity of the first pad 310 , the second pad 320 , and the third pad 330 is less than 0.1 mm.

[0137] In this way, the reliability of the SMT process can be improved.

[0138] For example, the distance between the edge of the power divider 110 and the edge of the circuit board 300 is greater than 10 mm. For example, it can be 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, or 20 mm. This embodiment of the present application does not limit this, and it can be reasonably set according to actual conditions.

[0139] The above distance may be understood as the distance between the edge of the power divider 110 and the edge of the circuit board 300 closest to the edge thereof.

[0140] For example, as shown in FIG8 , along a first direction x, a distance s1 between an edge of the power divider 110 near the first radiating portion 210 and an edge of the circuit board 300 near the first radiating portion 210 is greater than 10 mm. Along the first direction x, a distance s2 between an edge of the power divider 110 near the second radiating portion 220 and an edge of the circuit board 300 near the second radiating portion 220 is greater than 10 mm. Along a third direction z, a distance s3 between one side of the power divider 110 and the circuit board 300 is greater than 10 mm, and a distance s4 between the other side of the power divider 110 and the circuit board 300 is greater than 10 mm.

[0141] In other words, the edge of the power divider 110 is retracted relative to the edge of the circuit board 300 , and the retracted dimension is greater than 10 mm.

[0142] In this way, the circuit board 300 reflects electromagnetic waves, which enables the antenna structure 100 to have a larger downtilt angle coverage of the dual-beam gain when it is ceiling-mounted.

[0143] In the embodiment of the present application, the operating frequency band of the antenna structure 100 can be changed by changing the size of the antenna structure 100. For example, the operating frequency band of the antenna structure 100 can be changed by changing the size of the power divider 110 in the first direction x, the size of the power divider 110 in the third direction z, and the size of the first radiating portion 210 or the second radiating portion 220 in the second direction y.

[0144] The embodiment of the present application does not limit the operating frequency band of the antenna structure 100. For example, the operating frequency band of the antenna structure 100 may be a 5G frequency band.

[0145] The following briefly describes the operating principle of the antenna structure 100 provided in an embodiment of the present application. As shown in Figure 9, the distance between the first radiating portion 210 and the second radiating portion 220 corresponds to the dimension L1 of the power divider 110 in the first direction x. In other words, the distance L2 between the first radiating portion 210 and the second radiating portion 220 is 0.5λ to 0.8λ. The antenna structure 100 provided in an embodiment of the present application is fed via the connection portion 230 connected to the power divider 110.

[0146] As shown in Figure 9, along the first direction x, the electromagnetic waves radiated by the first radiating element 210 and the electromagnetic waves radiated by the second radiating element 220 cancel each other out in phase, reducing the beam gain and forming a beam null. In the plane formed by the second direction y and the third direction z, i.e., the median perpendicular plane of the power divider 110, the electromagnetic waves radiated by the first radiating element 210 and the second radiating element 220 superimpose in phase, increasing the beam gain after superposition, ultimately achieving the gain characteristic of a dual-beam antenna.

[0147] As shown in Table 1, by testing the antenna structure 100 provided in an embodiment of the present application, the corresponding relationship between the operating frequency of the antenna structure 100, the radiation efficiency of the antenna structure 100 and the maximum gain of the antenna structure 100 is obtained, where the test efficiency includes 1dB cable loss.

[0148] Table 1

[0149] Among them, the antenna structure 100 provided in the embodiment of the present application has an antenna efficiency greater than 70%, and a more obvious dual-beam directional pattern feature.

[0150] Figure 10A illustrates a simulation diagram of the radiation intensity of the antenna structure 100 provided in an embodiment of the present application when operating at a frequency of 5.2 GHz, Figure 10B illustrates a simulation diagram of the radiation intensity of the antenna structure 100 provided in an embodiment of the present application when operating at a frequency of 5.5 GHz, and Figure 10C illustrates a simulation diagram of the radiation intensity of the antenna structure 100 provided in an embodiment of the present application when operating at a frequency of 5.8 GHz. As can be seen from Figures 10A-10C, the dual-beam characteristics of the antenna structure 100 provided in an embodiment of the present application are quite obvious.

[0151] Figure 11 shows the antenna radiation pattern. The solid line in Figure 11 illustrates the antenna radiation pattern of the antenna structure 100 provided in the embodiment of the present application, while the dashed line illustrates the antenna radiation pattern of the omnidirectional antenna. As can be seen from Figure 11, compared to the omnidirectional antenna, the antenna structure 100 provided in the embodiment of the present application has increased antenna radiation gain at 90° and 270°, while decreasing antenna radiation gain at 0° and 180°.

[0152] The antenna structure 100 provided in the embodiment of the present application includes a power divider 110 extending along a first direction x, an input terminal 410 disposed on the power divider 110, and a first radiating portion 210 and a second radiating portion 220 located on opposite sides of the power divider 110. The input terminal 410 is located between the first radiating portion 210 and the second radiating portion 220. The first radiating portion 210 and the second radiating portion 220 are located on the same side of the power divider 110 along the thickness direction (second direction y) of the power divider 110. In the antenna structure 100 provided in the embodiment of the present application, an electrical signal is transmitted to the power divider 110 via the input terminal 410 and output by the first radiating portion 210 and the second radiating portion 220. The radiation gains of the first radiating portion 210 and the second radiating portion 220 in the first direction x mutually suppress each other, canceling each other in opposite directions to form a zero point. The radiation gains of the first radiating portion 210 and the second radiating portion 220 in directions perpendicular to the first direction x (second direction y and third direction z) superimpose on each other, enhancing each other in the same direction. This makes the radiation gain of the antenna structure 100 in the first direction x smaller, and the radiation gain in the direction perpendicular to the first direction x larger. In addition, in the embodiment of the present application, the plane where the power divider 110 is located (the plane formed by the first direction x and the third direction z) intersects with the plane where the first radiating part 210 and the second radiating part 220 are located (the plane formed by the second direction y and the third direction z), so that the radiation gain can also be superimposed on the plane perpendicular to the power divider (the plane formed by the second direction y and the third direction z). Therefore, deploying the antenna structure 100 provided in the embodiment of the present application in the corridor can improve the signal coverage in the room, while reducing the interference between APs along the corridor, thereby improving the concurrent performance of the AP network.

[0153] The antenna structure 100 provided in the embodiment of the present application has a simple installation process, simple assembly, low assembly complexity, low cost, and can be applied to the SMT process.

[0154] The above is only a specific embodiment of the present application, but the scope of protection of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An antenna structure, characterized in that, Comprising: A power divider extending along a first direction; A first radiation portion and a second radiation portion located on opposite sides of the power divider along the first direction and on the same side of the power divider along the thickness direction of the power divider; An input end disposed on the power divider and located between the first radiation portion and the second radiation portion.

2. The antenna structure according to claim 1, wherein Both the first radiation portion and the second radiation portion extend along the thickness direction of the power divider; the thickness direction of the power divider intersects the plane where the power divider is located.

3. The antenna structure according to claim 1 or 2, characterized in that, The antenna structure further includes a connecting portion; the connecting portion is disposed between the first radiation portion and the second radiation portion and connected to the input end; the connecting portion and the first radiation portion are on the same side of the power divider along the thickness direction of the power divider.

4. The antenna structure according to claim 3, characterized in that, The first radiation portion and the second radiation portion are symmetrically arranged with respect to the connecting portion.

5. The antenna structure according to claim 3 or 4, characterized in that, Along the thickness direction of the power divider, the difference between any two of the distance between the surface of the first radiation portion away from the power divider and the plane where the power divider is located, the distance between the surface of the second radiation portion away from the power divider and the plane where the power divider is located, and the distance between the surface of the connecting portion away from the power divider and the plane where the power divider is located is less than 0.1 mm.

6. The antenna structure according to any one of claims 1-5, characterized in that, Along the thickness direction of the power divider, the distance between the surface of the first radiation portion away from the power divider and the plane where the power divider is located and the distance between the surface of the first radiation portion away from the power divider and the plane where the power divider is located are both less than 8 mm.

7. The antenna structure according to any one of claims 1-6, characterized in that, Along a third direction, the maximum dimension of the power divider is greater than 1 mm; the third direction intersects the first direction, and the plane formed by the third direction and the first direction is parallel to the plane where the power divider is located.

8. The antenna structure according to claim 7, wherein Along the direction from the input end to the first radiation portion, the dimension of the power divider in the third direction increases; And / or Along the direction from the input end to the second radiation portion, the dimension of the power divider in the third direction increases.

9. The antenna structure according to any one of claims 1-8, characterized in that, Along the first direction, the dimension of the power divider is 0.5λ to 0.8λ; wherein, λ is the wavelength corresponding to the operating frequency of the antenna structure.

10. The antenna structure according to any one of claims 1-9, characterized in that, The power divider, the first radiation portion, and the second radiation portion are integrally formed.

11. The antenna structure according to any one of claims 1-10, characterized in that, The antenna structure further includes a circuit board and a connecting portion; the connecting portion is disposed between the first radiation portion and the second radiation portion and connected to the input end of the power divider; the connecting portion and the first radiation portion are on the same side of the power divider along the thickness direction of the power divider; The first radiation portion is electrically connected to a first pad on the circuit board, the second radiation portion is electrically connected to a second pad on the circuit board, and the connecting portion is electrically connected to a third pad on the circuit board.

12. The antenna structure according to claim 11, wherein The first pad and the second pad are used for grounding, and the third pad is used for transmitting a feeding signal.

13. The antenna structure according to claim 11 or 12, characterized in that, The distance between the edge of the power divider and the edge of the circuit board is greater than 10 mm.

14. The antenna structure according to any one of claims 1 to 13, characterized in that, Both the first radiation portion and the second radiation portion include monopole radiators.

15. An electronic device, characterized in that, Comprising the antenna structure and the housing according to any one of claims 1-14; the antenna structure is located within the housing.

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