Antenna and electronic equipment

Abstract

The utility model relates to the technical field of wireless communication, and discloses an antenna and electronic equipment, the antenna comprises a grounding radiator, a dielectric layer and a feed layer which are stacked in sequence along a first direction, the grounding radiator is provided with a gap, the feed layer comprises a first coupling feed structure and a second coupling feed structure which are arranged at an interval along a second direction, the second direction is perpendicular to the first direction, the first coupling feed structure and the second coupling feed structure are both electrically connected with the grounding radiator, and the first coupling feed structure can excite and radiate electromagnetic waves of a first frequency band through the gap. The second coupling feed structure can excite and radiate electromagnetic waves of a second frequency band through the gap, wherein the electromagnetic waves are not overlapped with the first frequency band. According to the antenna and the electronic equipment provided by the invention, the miniaturization of the antenna can be realized while high isolation of the antenna is realized, and high gain and omnidirectivity are obtained.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to an antenna and electronic equipment. Background Art

[0002] With the development of mobile communication technology, more and more electronic devices are choosing built-in communication modules to share mobile communication technology and mobile communication networks. These electronic devices not only require a smaller size, but also have high requirements on electrical performance. This brings great difficulties to the design of antennas on electronic devices, and Wi-Fi antennas are one of them.

[0003] In traditional electronic devices, there are two main design schemes for dual-frequency operation of 2G antennas and 5G antennas: one scheme is to use a PCB (Printed Circuit Board), design the antenna into a dual-frequency antenna, and then divide it into two antennas through a duplexer on the PCB board of the motherboard. This method requires the use of a filter with better performance to achieve higher isolation characteristics; the other scheme is that the 2G antenna and the 5G antenna are each designed with a separate PCB, and are respectively connected to different RF links on the motherboard PCB board to achieve dual-frequency operation. This method requires the 2G antenna and the 5G antenna to be placed far enough away to achieve high isolation, which puts higher requirements on the product space. At the same time, using two independent PCBs will also increase the antenna cost to a certain extent.

[0004] Therefore, how to achieve high isolation of the antenna and obtain high gain and omnidirectionality while miniaturizing the antenna is a problem that needs to be solved at present. Utility Model Content

[0005] The present application provides an antenna and an electronic device, which can realize the miniaturization of the antenna while achieving high isolation of the antenna and obtaining high gain and omnidirectionality.

[0006] In a first aspect, an embodiment of the present application provides an antenna, comprising a grounded radiator, a dielectric layer, and a feed layer stacked in sequence along a first direction, the grounded radiator being provided with a gap, the feed layer comprising a first coupling feed structure and a second coupling feed structure spaced apart along a second direction, the second direction being perpendicular to the first direction, the first coupling feed structure and the second coupling feed structure being both electrically connected to the grounded radiator, the first coupling feed structure being able to excite and radiate electromagnetic waves in a first frequency band through the gap, and the second coupling feed structure being able to excite and radiate electromagnetic waves in a second frequency band that does not overlap with the first frequency band through the gap.

[0007] In some embodiments, the first coupling feeding structure includes a first connecting portion, a second connecting portion and a first feeding port connected in sequence, the length direction of the first connecting portion is parallel to a third direction, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction, one end of the second connecting portion is connected to the first connecting portion, the other end of the second connecting portion extends in a direction away from the second coupling feeding structure and is connected to the feeding port, and the first feeding port is electrically connected to the grounded radiator.

[0008] In some embodiments, the first coupling feed structure includes a first feeding pad, and the first feeding port is electrically connected to the ground radiator through the first feeding pad.

[0009] In some embodiments, both ends of the first connecting portion are provided with bending portions.

[0010] In some embodiments, the second coupling feeding structure includes a third connection portion, two fourth connection portions and a second feeding port, the two fourth connection portions are arranged at intervals along a third direction, and the third connection portion is located between the two fourth connection portions, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction, the two fourth connection portions are connected to the third connection portion, the second feeding port is connected to the third connection portion, and the second feeding port is electrically connected to the grounded radiator.

[0011] In some embodiments, the fourth connecting portion includes a first portion, a second portion, a third portion, and a fourth portion connected end to end in sequence, and the fourth portion is located on a side of the second portion away from the first coupling feeding structure.

[0012] In some embodiments, the second coupling feed structure includes a second feeding pad, and the second feeding port is electrically connected to the ground radiator through the second feeding pad.

[0013] In some embodiments, the grounded radiator includes a main body and two first branches connected to each other, the slot is provided in the main body, and in a direction parallel to the second direction, the first branch is located on a side of the slot close to the first coupling feeding structure, one end of the first branch is connected to the main body, and the other end of the first branch extends into the slot along a third direction, and the lengths of the two first branches in the third direction are different.

[0014] In some embodiments, the grounded radiator includes a second branch, the second branch includes a first extension portion and a second extension portion which are arranged in a "T" shape and connected to each other, the length direction of the first extension portion is parallel to the second direction, the length direction of the second extension portion is parallel to the third direction, in the third direction, the first extension portion is located between two of the first branches, and the width of the second extension portion gradually increases or decreases along the direction away from the first extension portion.

[0015] In some embodiments, the grounded radiator includes a third branch, which is located on the side of the gap close to the second coupling feeding structure in a direction parallel to the second direction, and the third branch includes a third extension portion and a fourth extension portion which are arranged in a "T" shape and connected to each other, the length direction of the third extension portion is parallel to the second direction, and the length direction of the fourth extension portion is parallel to the third direction, and the third branch includes two fifth extension portions, which are respectively arranged at both ends of the fourth extension portion along the third direction, and the fifth extension portion extends in a direction away from the first coupling feeding structure, and the width of the fifth extension portion is greater than or less than the width of the fourth extension portion.

[0016] In some of the embodiments, avoidance spaces are provided at corners of the grounded radiator.

[0017] In some embodiments, the ground radiator is provided with a first via hole penetrating the dielectric layer along the first direction, and the first coupling feeding structure is electrically connected to the ground radiator through the first via hole; and / or, the ground radiator is provided with a second via hole penetrating the dielectric layer along the first direction, and the second coupling feeding structure is electrically connected to the ground radiator through the second via hole.

[0018] In some embodiments, the symmetry plane is parallel to the first direction, and the symmetry plane is parallel to the second direction.

[0019] In a second aspect, an embodiment of the present application provides an electronic device, wherein the electronic device includes the antenna as described in the first aspect.

[0020] The antenna provided in the embodiment of the present application has the beneficial effect that: since the first coupled feed structure and the second coupled feed structure can both be excited and radiate electromagnetic waves through the gap, the overall size of the antenna is relatively compact, and since the electromagnetic waves radiated in the first frequency band are orthogonal to the electromagnetic waves radiated in the second frequency band, the electromagnetic waves in the first frequency band are difficult to couple to the feeding port of the second coupled feed structure, and the electromagnetic waves in the second frequency band are difficult to couple to the feeding port of the first coupled feed structure, so the first coupled feed structure and the second coupled feed structure can obtain higher cross-frequency isolation characteristics.

[0021] The beneficial effects of the electronic device provided in the present application compared with the prior art are similar to the beneficial effects of the antenna provided in the present application compared with the prior art, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 is a schematic diagram of the structure of the antenna in Embodiment 1 of the present application;

[0024] Figure 2 yes Figure 1 A left side view of the antenna shown;

[0025] Figure 3 yes Figure 1 A front view of the antenna shown;

[0026] Figure 4 yes Figure 1 A rear view of the antenna shown;

[0027] Figure 5 yes Figure 1 A graph of simulated reflection coefficient of the antenna shown;

[0028] Figure 6 yes Figure 1 A graph of simulated transmission coefficients of the antenna shown;

[0029] Figure 7 yes Figure 1 The efficiency curve of the antenna shown;

[0030] Figure 8 yes Figure 1 The radiation omnidirectional 2D radiation pattern of the antenna shown;

[0031] Fig. 9 yes Figure 1 The antenna shown radiates a 3D radiation pattern of electromagnetic waves with a frequency of 2450 MHz;

[0032] Fig.10 yes Figure 1 The antenna shown radiates a 3D radiation pattern of electromagnetic waves with a frequency of 5500 MHz;

[0033] Fig.11 is a schematic diagram of the structure of the antenna in the second embodiment of the present application;

[0034] Fig.12 is a schematic diagram of the structure of the antenna in Embodiment 3 of the present application;

[0035] Fig.13 is a schematic diagram of the structure of the antenna in the fourth embodiment of the present application;

[0036] Fig.14 is a schematic diagram of the structure of the antenna in Embodiment 5 of the present application;

[0037] Fig.15 It is a structural diagram of the antenna in Example 6 of the present application.

[0038] The meanings of the marks in the figure are:

[0039] 100. Antenna;

[0040] 10. Grounded radiator;

[0041] 101, gap; 102, avoidance space; 11, main body; 12, first branch; 13, second branch; 131, first extension; 132, second extension; 14, third branch; 141, third extension; 142, fourth extension; 143, fifth extension;

[0042] 20. Dielectric layer;

[0043] 21. first via hole; 22. second via hole;

[0044] 30. A first coupling feeding structure;

[0045] 31. First connecting portion; 32. Second connecting portion; 33. First feeding port; 34. First feeding pad; 35. Bend portion;

[0046] 40. A second coupling feeding structure;

[0047] 41. third connection portion; 42. fourth connection portion; 421. first portion; 422. second portion; 423. third portion; 424. fourth portion; 43. second feeding port; 44. second feeding pad. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0049] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] References to "one embodiment", "some embodiments" or "an embodiment" described in the specification of this application mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some other embodiments", "in some other embodiments", etc., which appear at different places in this specification, do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. In addition, in one or more embodiments, particular features, structures or characteristics may be combined in any suitable manner.

[0052] In order to illustrate the technical solution of the present application, a description is given below with reference to specific drawings and embodiments.

[0053] The current design of miniaturized high-isolation dual-port omnidirectional antennas has the following three main difficulties: First, due to its small size, the antenna isolation characteristics are very poor, making it difficult to apply in practice. In addition, the dual-frequency antennas affect each other, resulting in the deterioration of the antenna's radiation performance, making it difficult to achieve omnidirectional radiation, and the omnidirectional radiation surface gain is low; third, it is difficult to achieve the same polarization characteristics of the electromagnetic waves radiated by the two ports of the antenna. The above three points are the main problems that currently restrict the design and application of co-polarized high-isolation miniaturized omnidirectional antennas on a common PCB (Printed Circuit Board).

[0054] In order to solve the above problems, the present application provides an antenna and an electronic device, which can achieve high isolation of the antenna and obtain high gain and omnidirectionality while realizing miniaturization of the antenna.

[0055] Please refer to Figures 1 to 4 In a first aspect, a first embodiment of the present application provides an antenna 100, comprising a ground radiator 10, a dielectric layer 20 and a feeding layer which are sequentially stacked along a first direction.

[0056] The material of the dielectric layer 20 can be FR-4 with a dielectric constant of 4.4, the material of the ground radiator 10 and the material of the feed layer can both be metal, and the ground radiator 10 and the feed layer are respectively printed on the front and back of the dielectric layer 20. The first direction can be along the direction indicated by arrow A in the figure.

[0057] The ground radiator 10 is provided with a gap 101, and the feeding layer includes a first coupling feeding structure 30 and a second coupling feeding structure 40 spaced apart along a second direction, the second direction is perpendicular to the first direction, and the second direction may be along the direction indicated by arrow B in the figure.

[0058] The first coupling feed structure 30 and the second coupling feed structure 40 are both electrically connected to the grounded radiator 10. The first coupling feed structure 30 can excite and radiate electromagnetic waves in a first frequency band through the slot 101, and the second coupling feed structure 40 can excite and radiate electromagnetic waves in a second frequency band that does not overlap with the first frequency band through the slot 101.

[0059] For example, the first coupling feed structure 30 may be a 2G coupling feed structure, and the first frequency band is a 2G frequency band. The second coupling feed structure 40 may be a 5G coupling feed structure, and the second frequency band is a 5G frequency band. The antenna 100 provided in the embodiment of the present application can operate in the Wi-Fi 2G frequency band and the 5G frequency band.

[0060] The antenna 100 provided in the embodiment of the present application has a relatively compact overall size because both the first coupling feed structure 30 and the second coupling feed structure 40 can be excited and radiate electromagnetic waves through the gap 101. Furthermore, because the electromagnetic waves radiated in the first frequency band are orthogonal to the electromagnetic waves radiated in the second frequency band, it is difficult for the electromagnetic waves in the first frequency band to be coupled to the feeding port of the second coupling feed structure 40, and it is difficult for the electromagnetic waves in the second frequency band to be coupled to the feeding port of the first coupling feed structure 30. Therefore, the first coupling feed structure 30 and the second coupling feed structure 40 can obtain a higher cross-frequency isolation characteristic.

[0061] In this embodiment, the first coupling feeding structure 30 includes a first connecting portion 31, a second connecting portion 32 and a first feeding port 33 which are connected in sequence. The length direction of the first connecting portion 31 is parallel to the third direction, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction. The third direction can be along the direction indicated by the arrow C in the figure. One end of the second connecting portion 32 is connected to the first connecting portion 31, and the other end of the second connecting portion 32 extends in a direction away from the second coupling feeding structure 40 and is connected to the feeding port. The first feeding port 33 is electrically connected to the grounded radiator 10.

[0062] By adopting the above solution, the space occupied by the first coupling feed structure 30 can be reduced, thereby reducing the overall size of the antenna 100, while increasing the capacitive coupling between the first coupling feed structure 30 and the grounded radiator 10, and the operating frequency band of the antenna 100 can be flexibly adjusted.

[0063] Optionally, both ends of the first connecting portion 31 are provided with a bending portion 35. With such a configuration, the resonant frequency band of the first frequency band can be adjusted, so that the performance of the antenna 100 is better.

[0064] For example, two ends of the first connection portion 31 along the third direction are both provided with bending portions 35 , and the bending portions 35 extend in a direction away from the second coupling and feeding structure 40 .

[0065] Specifically, the bending portion 35 may extend along an arc-shaped path.

[0066] In order to improve the matching characteristics of the first frequency band, in the second direction, the width of the second connecting portion 32 gradually increases or decreases.

[0067] The first coupled feeding structure 30 includes a first feeding pad 34, and the first feeding port 33 is electrically connected to the grounded radiator 10 through the first feeding pad 34. This configuration avoids the use of expensive SMA (SubMiniature version A) connectors for feeding the double-sided antenna 100 board, and also avoids the increase in thickness and assembly restrictions of the antenna 100 caused by cable penetration welding.

[0068] In this embodiment, the second coupling feeding structure 40 includes a third connection portion 41, two fourth connection portions 42 and a second feeding port 43, the two fourth connection portions 42 are arranged at intervals along the third direction, and the third connection portion 41 is located between the two fourth connection portions 42, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction, the two fourth connection portions 42 are connected to the third connection portion 41, the second feeding port 43 is connected to the third connection portion 41, and the second feeding port 43 is electrically connected to the grounded radiator 10.

[0069] By adopting the above solution, the space occupied by the second coupling feeding structure 40 can be reduced, thereby reducing the overall size of the antenna 100.

[0070] The fourth connecting portion 42 includes a first portion 421, a second portion 422, a third portion 423 and a fourth portion 424 which are connected end to end in sequence, and the fourth portion 424 is located on a side of the second portion 422 away from the first coupling feed structure 30. In this way, the resonant frequency band of the second frequency band can be adjusted, so that the performance of the antenna 100 is better.

[0071] For example, the length direction of the first portion 421 and the length direction of the third portion 423 are both parallel to the second direction, and the length direction of the second portion 422 and the length direction of the fourth portion 424 are both parallel to the third direction.

[0072] Specifically, the fourth connection portion 42 may extend along an arc-shaped path.

[0073] In order to improve the matching characteristics of the first frequency band, along the extending direction of the fourth connecting portion 42 , the width of the fourth connecting portion 42 gradually increases or decreases.

[0074] The second coupling feed structure 40 includes a second feed pad 44, and the second feed port 43 is electrically connected to the ground radiator 10 through the second feed pad 44. This configuration avoids the use of expensive SMA connectors for feeding the double-sided antenna 100 board, and also avoids the increase in thickness and assembly restrictions of the antenna 100 caused by cable penetration welding.

[0075] In this embodiment, the grounded radiator 10 includes a main body 11 and two first branches 12 connected to each other. The slot 101 is provided in the main body 11. In a direction parallel to the second direction, the first branch 12 is located on a side of the slot 101 close to the first coupling feeding structure 30. One end of the first branch 12 is connected to the main body 11, and the other end of the first branch 12 extends into the slot 101 along the third direction. The lengths of the two first branches 12 in the third direction are different.

[0076] By adopting the above solution, the resonant frequency of the first frequency band can be optimized, and at the same time a resonant point can be introduced in the first frequency band to broaden the bandwidth of the antenna 100 .

[0077] Optionally, the grounded radiator 10 includes a second branch 13, and the second branch 13 includes a first extension 131 and a second extension 132 that are arranged in a "T" shape and connected to each other, the length direction of the first extension 131 is parallel to the second direction, and the length direction of the second extension 132 is parallel to the third direction. In the third direction, the first extension 131 is located between the two first branches 12, and the width of the second extension 132 gradually increases or decreases in the direction away from the first extension 131. In this way, the field distribution of the second frequency band in the cavity can be changed, and the isolation characteristics of the antenna 100 in the second frequency band can be improved.

[0078] Optionally, the ground radiator 10 includes a third branch 14, which is located on a side of the slot 101 close to the second coupling feed structure 40 in a direction parallel to the second direction, and includes a third extension portion 141 and a fourth extension portion 142 which are arranged in a "T" shape and connected to each other, the length direction of the third extension portion 141 is parallel to the second direction, and the length direction of the fourth extension portion 142 is parallel to the third direction, and the third branch 14 includes two fifth extension portions 143, which are respectively arranged at two ends of the fourth extension portion 142 along the third direction, and the fifth extension portion 143 extends in a direction away from the first coupling feed structure 30, and the width of the fifth extension portion 143 is greater than or less than the width of the fourth extension portion 142. In this way, the coupling effect between the third branch 14 and the ground radiator 10 can be adjusted, the mode electric field distribution of the slot 101 cavity can be changed, and the isolation characteristics of the antenna 100 in the first frequency band can be improved.

[0079] In order to conveniently accommodate the third branch 14 , the gap 101 is configured in a “concave” shape.

[0080] Optionally, a clearance space 102 is provided at the corner of the grounded radiator 10. Such a configuration can optimize the matching characteristics of the first frequency band of the antenna 100.

[0081] In this embodiment, the avoidance space 102 is configured as a cut corner of a rectangle.

[0082] Please continue to refer to Figures 1 to 4 In this embodiment, the ground radiator 10 is provided with a first via hole 21 penetrating the dielectric layer 20 along the first direction, and the first coupling feed structure 30 is electrically connected to the ground radiator 10 through the first via hole 21; and / or, the ground radiator 10 is provided with a second via hole 22 penetrating the dielectric layer 20 along the first direction, and the second coupling feed structure 40 is electrically connected to the ground radiator 10 through the second via hole 22. Such a configuration facilitates the electrical connection of both the first coupling feed structure 30 and the second coupling feed structure 40 with the ground radiator 10, thereby realizing the design of the single-sided welded dual-port coupled feed slot antenna 100.

[0083] Optionally, the ground radiator 10 and the feed layer are symmetrically arranged about a symmetry plane, the symmetry plane is parallel to the first direction, and the symmetry plane is parallel to the second direction. Such an arrangement enables the antenna 100 to obtain a good omnidirectional radiation pattern in both the first frequency band and the second frequency band, and obtain the same polarization characteristics.

[0084] It can be understood that the symmetry plane is perpendicular to the third direction.

[0085] The antenna 100 provided in the embodiment of the present application can achieve high port isolation in both the 2G band and the 5G band without adding any lumped components, while the overall size of the antenna 100 is only 40mm*20mm*0.8mm in length*width*thickness. The antenna 100 also achieves high radiation efficiency and good omnidirectional radiation characteristics in both the 2G band and the 5G band. At the same time, the antenna 100 naturally obtains a dipole-like omnidirectional radiation characteristic by adopting the slot antenna 100 form of dual-port coupled feeding. In addition, the antenna 100 can be a double-layer PCB structure with a simple structure, which is easy to process and mass produce. It is not loaded with lumped components and duplexers, and has a wider range of application scenarios and fewer limitations on use.

[0086] Please refer to Figures 5 to 10 As can be seen from the figure, the antenna 100 provided in the embodiment of the present application has an isolation of 35dB in the 2G frequency band and an isolation of 31dB in the 5G frequency band. Compared with the dual-port conventional dipole antenna 100 of the same size, the port isolation of the antenna 100 provided in the embodiment of the present application in the 2G frequency band is improved by 15dB, and the port isolation of the 5G frequency band is improved by 11dB.

[0087] The reflection coefficient of the antenna 100 provided in the embodiment of the present application is less than -10dB in the 2400MHz-2500MHz frequency band and the 5150MHz-5850MHz frequency band, and the bandwidth margin is sufficient.

[0088] The antenna 100 provided in the embodiment of the present application utilizes the characteristic that different mode fields of the slot antenna 100 are difficult to propagate, and designs a second branch 13 and a third branch 14 of special shapes on the ground radiation layer, so that the energy radiated from the other port is coupled to the ground radiation layer rather than the feeding port as quickly as possible, so that the port isolation speed of the antenna 100 at 2400MHz-2500MHz is greater than 35dB, and the port isolation speed at 5150MHz-5850MHz is greater than 31dB, which greatly improves the cross-frequency isolation of the antenna 100. Compared with the conventional dual-port dipole antenna 100, the isolation is improved by 11-15dB.

[0089] The antenna 100 provided in the embodiment of the present application has a simulated radiation efficiency greater than 90% within the working frequency band, and the radiation efficiency changes little with frequency. The measured radiation efficiency of the antenna 100 is no less than 70%; the average horizontal plane gain of the antenna 100 at a frequency point of 2450 MHz is greater than 1.6 dBi, and the average horizontal plane gain at a frequency point of 5500 MHz is greater than 1.7 dBi.

[0090] The antenna 100 provided in the embodiment of the present application has good radiation omnidirectionality. In the 3D radiation pattern, the directional patterns of the antenna 100 in each frequency band maintain good omnidirectional radiation characteristics without directional pattern distortion.

[0091] Please refer to Fig.11 Different from the first embodiment, in the second embodiment, the first feeding port 33 and the second feeding port 43 are both welded to the cable.

[0092] Please refer to Fig.12 , which is different from the first embodiment, in the third embodiment, the avoidance space 102 is set as a fan-shaped cut angle.

[0093] It can be understood that in other embodiments, the avoidance space 102 can be configured to be a triangle, a quarter circle, a quarter ellipse or other various specifications or irregular shapes.

[0094] Please refer to Fig.13 Different from the first embodiment, in the fourth embodiment, the shape of the second extension portion 132 and the shape of the fifth extension portion 143 can both be set to a "J" shape.

[0095] It can be understood that in other embodiments, the shape of the second extension portion 132 and the shape of the fifth extension portion 143 can also be set to a semi-elliptical shape, an irregular curve shape, etc.

[0096] Please refer to Fig.14 Different from the first embodiment, in the fourth embodiment, the third connection portion 41 and the two fourth connection portions 42 are distributed in a "Y" shape.

[0097] It can be understood that in other embodiments, the third connection portion 41 and the two fourth connection portions 42 may be distributed in a “C” shape or an “E” shape.

[0098] Please refer to Fig.15 , which is different from the first embodiment, in the fifth embodiment, the shape of the first branch 12 is set to be a semi-ellipse.

[0099] It can be understood that in other embodiments, the shape of the first branch 12 can be set to be semicircular, "L"-shaped or "T"-shaped, etc.

[0100] In a second aspect, an embodiment of the present application provides an electronic device, and the electronic device includes the antenna 100 as in the first aspect.

[0101] In the electronic device provided in the embodiment of the present application, since the first coupling feed structure 30 and the second coupling feed structure 40 of the antenna 100 can both be excited and radiate electromagnetic waves through the gap 101, the overall size of the antenna 100 is relatively compact. Moreover, since the electromagnetic waves radiated in the first frequency band are orthogonal to the electromagnetic waves radiated in the second frequency band, the electromagnetic waves in the first frequency band are difficult to couple to the feeding port of the second coupling feed structure 40, and the electromagnetic waves in the second frequency band are difficult to couple to the feeding port of the first coupling feed structure 30. Therefore, the first coupling feed structure 30 and the second coupling feed structure 40 can obtain higher cross-frequency isolation characteristics.

[0102] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An antenna, characterized in that: The invention comprises a ground radiator, a dielectric layer and a feeding layer which are sequentially stacked along a first direction, wherein the ground radiator is provided with a gap, and the feeding layer comprises a first coupling feeding structure and a second coupling feeding structure which are spaced apart along a second direction, wherein the second direction is perpendicular to the first direction, and the first coupling feeding structure and the second coupling feeding structure are both electrically connected to the ground radiator, and the first coupling feeding structure can excite and radiate electromagnetic waves of a first frequency band through the gap, and the second coupling feeding structure can excite and radiate electromagnetic waves of a second frequency band which does not overlap with the first frequency band through the gap.

2. The antenna according to claim 1, characterized in that The first coupling feeding structure includes a first connecting portion, a second connecting portion and a first feeding port connected in sequence, the length direction of the first connecting portion is parallel to a third direction, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction, one end of the second connecting portion is connected to the first connecting portion, the other end of the second connecting portion extends in a direction away from the second coupling feeding structure and is connected to the feeding port, and the first feeding port is electrically connected to the grounded radiator.

3. The antenna according to claim 2, characterized in that: The first coupling feeding structure includes a first feeding pad, and the first feeding port is electrically connected to the ground radiator through the first feeding pad.

4. The antenna according to claim 2, characterized in that: Both ends of the first connecting portion are provided with bending portions.

5. The antenna according to claim 1, characterized in that The second coupling feeding structure includes a third connection portion, two fourth connection portions and a second feeding port, the two fourth connection portions are arranged at intervals along a third direction, and the third connection portion is located between the two fourth connection portions, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction, the two fourth connection portions are connected to the third connection portion, the second feeding port is connected to the third connection portion, and the second feeding port is electrically connected to the grounded radiator.

6. The antenna according to claim 5, characterized in that The fourth connecting portion includes a first portion, a second portion, a third portion and a fourth portion which are connected end to end in sequence, the length direction of the second portion and the length direction of the fourth portion are both parallel to the third direction, and the fourth portion is located on a side of the second portion away from the first coupling feeding structure.

7. The antenna according to claim 5, characterized in that: The second coupling feeding structure includes a second feeding pad, and the second feeding port is electrically connected to the ground radiator through the second feeding pad.

8. The antenna according to any one of claims 1 to 7, characterized in that: The grounded radiator includes a main body and two first branches connected to each other, the slot is arranged in the main body, and in a direction parallel to the second direction, the first branch is located on a side of the slot close to the first coupling feeding structure, one end of the first branch is connected to the main body, and the other end of the first branch extends into the slot along a third direction, and the lengths of the two first branches in the third direction are different.

9. The antenna according to claim 8, characterized in that The grounded radiator includes a second branch, and the second branch includes a first extension portion and a second extension portion which are arranged in a "T" shape and connected to each other, the length direction of the first extension portion is parallel to the second direction, the length direction of the second extension portion is parallel to the third direction, and in the third direction, the first extension portion is located between two of the first branches, and the width of the second extension portion gradually increases or decreases along the direction away from the first extension portion.

10. The antenna according to claim 9, characterized in that: The grounded radiator includes a third branch, which is located on a side of the gap close to the second coupling and feeding structure in a direction parallel to the second direction, and includes a third extension portion and a fourth extension portion which are arranged in a "T" shape and connected to each other, wherein the length direction of the third extension portion is parallel to the second direction, and the length direction of the fourth extension portion is parallel to the third direction, and the third branch includes two fifth extension portions, which are respectively arranged at two ends of the fourth extension portion along the third direction, and the fifth extension portion extends in a direction away from the first coupling and feeding structure, and the width of the fifth extension portion is greater than or less than the width of the fourth extension portion.

11. The antenna according to any one of claims 1 to 7, characterized in that: Avoidance spaces are arranged at the corners of the grounded radiator.

12. The antenna according to any one of claims 1 to 7, characterized in that: The ground radiator is provided with a first via hole penetrating the dielectric layer along the first direction, and the first coupling feeding structure is electrically connected to the ground radiator through the first via hole; and / or the ground radiator is provided with a second via hole penetrating the dielectric layer along the first direction, and the second coupling feeding structure is electrically connected to the ground radiator through the second via hole.

13. The antenna according to any one of claims 1 to 7, characterized in that: The ground radiator and the feeding layer are both symmetrically arranged with respect to a symmetry plane, the symmetry plane is parallel to the first direction, and the symmetry plane is parallel to the second direction.

14. An electronic device, characterized in that: The electronic device comprises the antenna according to any one of claims 1 to 13.

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