An antenna assembly and electronic device

Abstract

The application relates to an antenna assembly and an electronic device, the antenna assembly comprising a first radiator, a second radiator, a feeding structure and a decoupling device. The first radiator comprises first and second radiation branches with opposite bending directions, and a first gap is present between the first and second radiation branches; the second radiator comprises third and fourth radiation branches with opposite bending directions, and a second gap is present between the third and fourth radiation branches; the feeding structure is electrically connected with the first and third radiation branches respectively; the first radiator and the second radiator have a common part, which is a common branch, and the common branch is electrically connected with a ground end of the antenna assembly through the decoupling device. The decoupling device reduces the interference between the first and second radiators, improves the signal transmission quality of the first and second radiators, and further improves the stability of signal transmission and reception of the electronic device and the use performance of the electronic device.

Description

[0001] The present application claims priority to the Chinese patent application No. 202123040809.1, filed on December 6, 2021, with the State Intellectual Property Office of China, and the Chinese patent application No. 202123040809.1 has the title of "Antenna assembly and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of antennas, in particular to an antenna assembly and an electronic device. BACKGROUND

[0003] With the application and development of terminal electronic devices, users have higher and higher demands on the working performance of electronic devices. The electronic device is provided with an antenna assembly, the antenna assembly includes a plurality of radiators capable of transmitting signals of specific frequencies, the radiators have a plurality of working frequencies to increase the application scenarios of the electronic device, and at the same time, the plurality of radiators can work simultaneously in the same frequency band to meet the demand of the electronic device on processing of large-throughput multi-data streams. Generally, when the plurality of radiators work simultaneously, adjacent radiators will affect each other, resulting in poor quality of the signal transmitted by the radiators and poor stability of the signal transmitted and received by the electronic device. UTILITY MODEL CONTENT

[0004] The present application provides an antenna assembly and an electronic device, which can reduce the interference between adjacent radiators and improve the stability of the signal transmitted and received by the electronic device.

[0005] The first aspect of the present application provides an antenna assembly, which comprises:

[0006] a first radiator, the first radiator comprising a first radiation branch and a second radiation branch with opposite bending directions, and a first gap being present between the first radiation branch and the second radiation branch;

[0007] a second radiator, the second radiator comprising a third radiation branch and a fourth radiation branch with opposite bending directions, and a second gap being present between the third radiation branch and the fourth radiation branch;

[0008] the first radiator and the second radiator have a common part, and the common part is a common branch;

[0009] a feeding structure, the feeding structure being electrically connected to the first radiation branch and the third radiation branch, respectively;

[0010] a decoupling device, the decoupling device being arranged on the common branch, and the common branch being electrically connected to a ground terminal of the antenna assembly through the decoupling device.

[0011] In the present application, the interference between the first radiator and the second radiator is reduced by the decoupling device, the quality of the signal transmission of the first radiator and the second radiator is improved, the stability of the electronic device in signal transmission is improved, the accuracy of the signal processing of the electronic device is improved, and the use performance of the electronic device is improved.

[0012] In a possible design, the first radiating branch and the third radiating branch are arranged in a common body, or the second radiating branch and the fourth radiating branch are arranged in a common body, to form a common branch.

[0013] In the present application, the second radiating branch and the fourth radiating branch are arranged in a common body, or the first radiating branch and the third radiating branch are arranged in a common body, to increase the flexibility of the structure of the antenna assembly, and increase the flexibility of the installation position of the feed structure, so as to facilitate the installation of the antenna assembly.

[0014] In a possible design, the first radiating branch and the third radiating branch arranged in a common body are connected in a T-shaped structure, or the second radiating branch and the fourth radiating branch arranged in a common body are connected in a T-shaped structure.

[0015] In the present application, the two radiating branches arranged in a common body are connected in a T-shaped structure, the structures of the second radiating branch, the fourth radiating branch, the first radiating branch and the third radiating branch are simplified, so that the size of the antenna assembly is reduced, and the space required for the installation of the antenna assembly is reduced.

[0016] In a possible design, the first radiator further includes at least one fifth radiating branch, the fifth radiating branch is connected with the first radiating branch, and / or the fifth radiating branch is connected with the second radiating branch.

[0017] The second radiator further includes at least one sixth radiating branch, the sixth radiating branch is connected with the third radiating branch, and / or the sixth radiating branch is connected with the fourth radiating branch.

[0018] In the present application, the first radiator and the second radiator each include a plurality of radiating branches capable of resonating with signals of a specific frequency, to increase the frequency range of the signals capable of being transmitted by the first radiator and the second radiator, thereby increasing the working performance of the first radiator and the second radiator, and further improving the working performance and application range of the antenna assembly and the electronic device.

[0019] In a possible design, the common branch is connected with at least one fifth radiating branch and at least one sixth radiating branch, and the fifth radiating branch and the sixth radiating branch divide the common branch into multiple segments.

[0020] The number of the decoupling device is one, and the decoupling device is arranged on a segment of the common branch close to the ground end.

[0021] In the application, the decoupling device is arranged on each segment of the common branch close to the ground terminal, so that the decoupling device can decouple the antenna assembly when the antenna assembly works in any frequency band, thereby improving the reliability of the decoupling device and improving the working stability of the antenna assembly and the electronic device.

[0022] In a possible design, the common branch is connected with at least one fifth radiation branch and at least one sixth radiation branch, and the fifth radiation branch and the sixth radiation branch separate the common branch into multiple segments.

[0023] The number of the decoupling devices is multiple, and each segment of the common branch is provided with a decoupling device.

[0024] In the application, each segment of the common branch is provided with a decoupling device, and when a certain decoupling device is short-circuited, the other decoupling devices can work normally, thereby improving the reliability of the decoupling device and improving the working stability of the antenna assembly and the electronic device.

[0025] In a possible design, the first radiation branch, the second radiation branch and the ground terminal enclose a first space, and the third radiation branch, the fourth radiation branch and the ground terminal enclose a second space.

[0026] The antenna assembly further comprises at least one first protruding part and at least one second protruding part, and the first protruding part and the second protruding part are connected with the ground terminal, the first protruding part is arranged in the first space, and the second protruding part is arranged in the second space.

[0027] In the application, the first protruding part and the second protruding part change the distance between the first radiation body and the ground terminal and the distance between the second radiation body and the ground terminal, thereby changing the coupling relationship between the first radiation branch and the second radiation branch and the coupling relationship between the third radiation branch and the fourth radiation branch, thereby reducing the interference between the first radiation body and the second radiation body, and further improving the working stability of the first radiation body and the second radiation body.

[0028] In a possible design, the decoupling device comprises one or more decoupling capacitors.

[0029] The decoupling device is composed of lumped components, and / or the decoupling device is composed of a distributed parameter structure.

[0030] In the application, when the first radiation body resonates with a signal of a specific frequency, energy is generated and radiated to the outside, at this time, the decoupling capacitor can absorb part of the energy radiated by the first radiation body, thereby preventing the energy radiated by the first radiation body from interfering with the resonance of the second radiation body and the signal, thereby improving the working stability of the second radiation body.

[0031] In one possible design, the decoupling device includes decoupling capacitors and inductors, with one or more decoupling capacitors and one or more inductors;

[0032] Multiple decoupling capacitors are connected in series with an inductor, and / or multiple decoupling capacitors are connected in parallel with an inductor;

[0033] Decoupling devices are composed of lumped devices, and / or, decoupling devices are composed of distributed parameter structures.

[0034] In this application, by setting an inductor and multiple decoupling capacitors, the decoupling capacitor value of the decoupling device can be flexibly varied to adapt to the decoupling requirements of different frequencies, thereby improving the working performance and applicability of the decoupling device.

[0035] A second aspect of this application provides an electronic device, the electronic device comprising:

[0036] ontology;

[0037] The antenna assembly is any one of the antenna assemblies described above, and the antenna assembly is electrically connected to the main body via a feeding device.

[0038] In this application, the antenna assembly can reduce interference between adjacent first and second radiators, thereby improving the operational stability of electronic devices.

[0039] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0040] Figure 1 A partial structural schematic diagram of the electronic device provided in this application in one embodiment;

[0041] Figure 2 for Figure 1 A schematic diagram of the antenna assembly in one embodiment;

[0042] Figure 3 for Figure 2 A schematic diagram of the current flow direction when the antenna assembly is in common-mode feeding mode;

[0043] Figure 4 for Figure 2 A schematic diagram of the current flow direction when the antenna assembly is under differential mode feeding.

[0044] Figure 5 for Figure 2 A schematic diagram of the current distribution after decoupling of the antenna components;

[0045] Figure 6 A schematic diagram illustrating the decoupling effect of the antenna assembly provided in this application in one embodiment;

[0046] Figure 7 A schematic diagram of the structure of the decoupling device for the antenna assembly provided in this application in one embodiment;

[0047] Figure 8 A schematic diagram of the structure of the decoupling device for the antenna assembly provided in this application in another embodiment;

[0048] Figure 9 A schematic diagram illustrating the decoupling effect of the antenna assembly provided in this application in another embodiment;

[0049] Figure 10 for Figure 1 A schematic diagram of the antenna assembly in another embodiment;

[0050] Figure 11 for Figure 1 A schematic diagram of the antenna assembly in another embodiment;

[0051] Figure 12 for Figure 1 A schematic diagram of the antenna assembly in another embodiment;

[0052] Figure 13 for Figure 1 A schematic diagram of the antenna assembly in another embodiment;

[0053] Figure 14 for Figure 1 A schematic diagram of the antenna assembly in another embodiment.

[0054] Figure label:

[0055] 1-Antenna assembly;

[0056] 11-First radiator;

[0057] 111 - First radiating branch;

[0058] 112 - Second radial branch;

[0059] 113 - First Gap;

[0060] 114 - Fifth radiating branch;

[0061] 115 - First Space;

[0062] 12-Second radiator;

[0063] 121 - Third radiating branch;

[0064] 122 - Fourth radiating branch;

[0065] 123 - Second gap;

[0066] 124 - sixth radiating branch;

[0067] 125 - second space;

[0068] 13 - common branch;

[0069] 14 - feeding structure;

[0070] 15 - decoupling device;

[0071] 151 - decoupling capacitor;

[0072] 152 - inductor;

[0073] 16 - ground terminal;

[0074] 17 - first protrusion;

[0075] 18 - second protrusion;

[0076] 2 - body.

[0077] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application. DETAILED DESCRIPTION

[0078] For a better understanding of the technical solutions of the present application, the embodiments of the present application will be described in detail below with reference to the drawings.

[0079] Although the description of the present application will be introduced in combination with some embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications which can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the present application, some specific details will be omitted in the description. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0080] In the embodiments of the present application, the terms "first", "second", "third", "fourth" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third", "fourth" can explicitly or implicitly include one or more of the features.

[0081] In the embodiments of the present application, "and / or" is only used to describe the relationship between the associated objects, and means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally means that the front and rear associated objects are an "or" relationship.

[0082] In the description of the embodiments of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood in a broad sense, for example, "connecting" can be detachably connected, or can be non-detachably connected; can be directly connected, or can be indirectly connected through an intermediate medium. The orientation language mentioned in the embodiments of the present application, such as "upper", "lower", "left", "right", "inner", "outer" and the like, is only the direction of reference to the drawings, therefore, the orientation language used is to better and more clearly illustrate and understand the embodiments of the present application, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0083] In this specification, the reference to "one embodiment" or "some embodiments" and the like means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in other some embodiments" and the like appearing in various places in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "including", "containing", "having" and their variants mean "including but not limited to", unless otherwise specifically emphasized.

[0084] In a specific embodiment, the present application is further described in detail below by specific embodiments and in conjunction with the drawings.

[0085] The first aspect of the embodiments of the present application provides an electronic device, such as Figure 1As shown, the electronic device includes a body 2 and an antenna assembly 1, at least part of the antenna assembly 1 is electrically connected or signal connected with the body 2, when the electronic device works, the antenna assembly 1 can receive or send signals to realize the transmission of signals between the electronic device and the outside world. In order to increase the amount of data that the electronic device can process, the antenna assembly 1 at least includes a first radiator 11 and a second radiator 12 capable of working in the same frequency band at the same time, at the same time, the first radiator 11 and the second radiator 12 both have multiple working frequency bands, so that the antenna assembly 1 can transmit signals of different frequencies to improve the application scenarios of the electronic device. In the prior art, when the first radiator 11 and the second radiator 12 work in the same frequency band at the same time, the adjacent first radiator 11 and the second radiator 12 will interfere with each other, resulting in a decrease in the signal quality transmitted by the first radiator 11 and the second radiator 12, thereby reducing the stability of the electronic device in transmitting and receiving signals. The antenna assembly 1 provided by the present application can reduce the interference between the adjacent first radiator 11 and the second radiator 12, thereby improving the working stability of the electronic device.

[0086] Wherein, the body 2 connected with the antenna assembly 1 can be a metal shell, a circuit board, a copper skin, etc. of the electronic device, and the specific structure of the body 2 is not specially limited in the present application.

[0087] Specifically, as shown in the figure, Figure 2 The antenna assembly 1 includes a first radiator 11, a second radiator 12, a feeding structure 14 and a decoupling device 15. The first radiator 11 includes a first radiation branch 111 and a second radiation branch 112 with opposite bending directions, and a first gap 113 exists between the first radiation branch 111 and the second radiation branch 112; the second radiator 12 includes a third radiation branch 121 and a fourth radiation branch 122 with opposite bending directions, and a second gap 123 exists between the third radiation branch 121 and the fourth radiation branch 122; wherein, the first radiator 11 and the second radiator 12 have a common part, which is a common branch 13, the decoupling device 15 is arranged on the common branch 13, and the common branch 13 is electrically connected with the ground end 16 of the antenna assembly 1 through the decoupling device 15; the feeding structure 14 is electrically connected with the first radiation branch 111 and the third radiation branch 121 respectively.

[0088] In the embodiment, the antenna assembly 1 at least includes the first radiator 11 and the second radiator 12, and the first radiator 11 and the second radiator 12 can work simultaneously under the same frequency band. When the antenna assembly 1 works, the first radiator 11 and the second radiator 12 can resonate with signals of a specific frequency simultaneously, and transmit the received signals to the chip of the electronic device through the feeding structure 14, so that the electronic device can identify and process the signals. Since the first radiator 11 and the second radiator 12 resonate with signals of the same frequency simultaneously, the adjacent first radiator 11 and the second radiator 12 interfere with each other, resulting in a decrease in the signal quality transmitted by the first radiator 11 and the second radiator 12. Therefore, in the embodiment, the decoupling device 15 is arranged on the common branch 13 of the first radiator 11 and the second radiator 12. The decoupling device 15 reduces the interference between the first radiator 11 and the second radiator 12, thereby improving the signal transmission quality of the first radiator 11 and the second radiator 12, further improving the stability of signal transmission of the electronic device, improving the accuracy of signal processing of the electronic device, and improving the use performance of the electronic device. The decoupling device 15 is arranged on the common branch 13 of the first radiator 11 and the second radiator 12, so that the decoupling device 15 can reduce the interference of the first radiator 11 on the second radiator 12 and the interference of the second radiator 12 on the first radiator 11, thereby improving the working stability of the first radiator 11 and the second radiator 12, improving the utilization rate of the decoupling device 15, reducing the structural complexity of the antenna assembly 1, thereby reducing the size of the antenna assembly 1 and the space required for installation of the antenna assembly 1.

[0089] In the embodiment, the first radiator 11 includes the first radiation branch 111 and the second radiation branch 112 with opposite bending directions, and the first radiation branch 111 and the second radiation branch 112 have the first gap 113 therebetween. The second radiator 12 includes the third radiation branch 121 and the fourth radiation branch 122 with opposite bending directions, and the third radiation branch 121 and the fourth radiation branch 122 have the second gap 123 therebetween, so that the first radiator 11 and the second radiator 12 can resonate with signals of multiple frequencies, thereby increasing the frequency range of the signals transmitted by the first radiator 11 and the second radiator 12, further increasing the application scenarios of the electronic device, and improving the working performance of the antenna assembly 1 and the electronic device.

[0090] In addition, the connection mode of the feeding structure 14 and the radiator (the radiator refers to the first radiator 11 and the second radiator 12 described above) can be direct connection or coupling connection, and the application does not specially limit the connection mode of the feeding structure 14 and the radiator.

[0091] Specifically, the decoupling device 15 includes one or more decoupling capacitors 151.

[0092] In this embodiment, when the first radiator 11 resonates with a signal of a specific frequency, it generates energy and radiates it to the outside. At this time, the decoupling capacitor 151 can absorb part of the energy radiated by the first radiator 11, thereby preventing the energy radiated by the first radiator 11 from interfering with the resonance between the second radiator 12 and the signal, thereby improving the working stability of the second radiator 12.

[0093] The specific method for determining the capacitance value of decoupling capacitor 151 is as follows: First, as... Figure 3 As shown, common-mode feeding is applied to the first radiator 11 and the second radiator 12, meaning the phase of the excitation signal applied to the first radiator 11 is the same as the phase of the excitation signal applied to the second radiator 12. At this time, the current direction on the first radiator 11 is opposite to the current direction on the second radiator 12, and the current direction on the first radiating stub 111 is the same as the current direction on the second radiating stub 112. The current direction on the third radiating stub 121 is the same as the current direction on the fourth radiating stub 122. The current direction on the ground terminal 16 of the antenna assembly 1 is opposite to the current direction on the first radiator 11, and the current direction on the ground terminal is opposite to the current direction on the second radiator 12. The decoupling capacitor 151 is located precisely at the point where the common-mode feeding current is large. Then, as... Figure 4 As shown, differential mode feeding is applied to the first radiator 11 and the second radiator 12, meaning the phase of the excitation signal applied to the first radiator 11 is opposite to the phase of the excitation signal applied to the second radiator 12. At this time, the current direction on the first radiator 11 is the same as the current direction on the second radiator 12, and the current directions on the first radiating stub 111, the second radiating stub 112, the third radiating stub 121, and the fourth radiating stub 122 are all the same. The current direction at the ground terminal 16 is the same as the current direction on the first radiator 11 and the second radiator 12. At this point, the decoupling capacitor 151 is located precisely at the point where the differential mode feeding current is low. Finally, as... Figure 5As shown, the capacitance value of the decoupling capacitor 151 is adjusted so that the current of the common mode feed and the current of the differential mode feed are added on the first radiator 11 and cancelled on the second radiator 12, thereby reducing the risk that the current generated by the first radiator 11 resonating with the signal enters the second radiator 12, and reducing the interference of the first radiator 11 on the second radiator 12. Similarly, the current of the common mode feed and the current of the differential mode feed are added on the second radiator 12 and cancelled on the first radiator 11, which can reduce the interference of the second radiator 12 on the first radiator 11. Since the first radiator 11 and the second radiator 12 exist at least in the first working frequency band and the second working frequency band, the above steps are repeated to obtain the value range of the decoupling capacitor 151 in the first working frequency band and the value range of the decoupling capacitor 151 in the second working frequency band, respectively. A common capacitance value in the multiple value ranges is selected, so that the decoupling capacitor 151 can decouple the antenna assembly 1 in multiple frequency bands, reducing the risk that the signal frequency change of the first radiator 11 and the second radiator 12 causes the decoupling capacitor 151 to fail, thereby improving the stability of the decoupling capacitor 151, and further improving the stability of the decoupling device 15 and the antenna assembly 1.

[0094] In this embodiment, the antenna assembly 1 can transmit signals of 3.9G frequency and 5.2G frequency, as shown in the following table. Figure 6 As shown, when the antenna assembly 1 transmits signals of 3.9G frequency, the isolation of the decoupling device 15 is 39.8dB, which is improved by 27.4dB compared with the isolation when not decoupled. When the antenna assembly 1 transmits signals of 5.2G frequency, the isolation of the decoupling device 15 is 38.2dB, which is improved by 23.9dB compared with the isolation when not decoupled. At the same time, as shown in the following table. Figure 6 As shown, the decoupling device 15 improves the isolation between the first radiator 11 and the second radiator 12 while improving the impedance matching of the first radiator 11 and the second radiator 12, further improving the working performance of the antenna assembly 1.

[0095] Among them, multiple decoupling capacitors 151 can be in series or in parallel, and the application does not specially limit the series-parallel form of the decoupling capacitor 151.

[0096] More specifically, as shown in the following table. Figure 7 and Figure 8 As shown, the decoupling device 15 includes an inductor 152 and a decoupling capacitor 151, the number of decoupling capacitors 151 is one or more, the number of inductors 152 is one or more, the decoupling capacitors 151 are in series with the inductors 152, and / or the decoupling capacitors 151 are in parallel with the inductors 152.

[0097] In the embodiment, the decoupling capacitor 151 of the decoupling device 15 is flexibly set to adapt to the decoupling requirements of different frequencies, thereby improving the working performance and application range of the decoupling device 15. As shown in Figure 9 When the antenna assembly 1 of the embodiment transmits signals of 2.4G frequency and 5G frequency, two decoupling resonances can be generated at the same time. When the antenna assembly 1 transmits signals of 2.4G frequency, the isolation of the decoupling device 15 is better than 15dB, and the isolation of the decoupling device 15 can reach 39dB at most, which is improved by 29.5dB compared with the isolation without decoupling. The isolation of the edge of 2.4G frequency is 15.6dB, and the isolation of the edge of 2.5G frequency is 21.3dB, which are improved by 6.5dB and 11.8dB respectively compared with the isolation without decoupling. When the antenna assembly 1 transmits signals of 5G frequency, the isolation of the decoupling device 15 is better than 20dB, and the isolation of the decoupling device 15 can reach 50dB at most, which is improved by 37dB compared with the isolation without decoupling. The edge isolation of 5.15G frequency and 5.85G frequency is about 20dB, which is improved by about 8.5dB compared with the isolation without decoupling.

[0098] The series-parallel form of the decoupling capacitor 151 and the inductor 152 is flexible and variable, and the application does not specially limit the series-parallel form of the decoupling capacitor 151 and the inductor 152.

[0099] In addition, the decoupling device 15 in any of the above embodiments is composed of an integrated device and / or realized by a distributed parameter structure, and the application does not specially limit the implementation mode of the decoupling capacitor 151.

[0100] The application also provides various modified structures of the above antenna assembly 1. In one embodiment, as shown in Figure 2 The second radiation branch 112 and the fourth radiation branch 122 are arranged in common to form a common branch 13, and the second radiation branch 112 and the fourth radiation branch 122 are connected in a T-shaped structure. In another embodiment, as shown in Figure 10 The first radiation branch 111 and the third radiation branch 121 are arranged in common to form a common branch 13, and the first radiation branch 111 and the third radiation branch 121 are connected in a T-shaped structure.

[0101] In the embodiment, the first radiation branch 111 and the third radiation branch 121 can be arranged in common, or the second radiation branch 112 and the fourth radiation branch 122 can be arranged in common. As shown in Figure 2As shown, when the second radiating branch 112 is arranged in the same body with the fourth radiating branch 122, the first radiating branch 111 is located on the side away from the second radiator 12, and the third radiating branch 121 is located on the side away from the first radiator 11. At this time, the feed structure 14 is located on the outside of the first radiator 11 and the second radiator 12, so as to facilitate the connection of the feed structure 14 with the first radiating branch 111 and the third radiating branch 121; as shown, Figure 10 As shown, when the first radiating branch 111 is arranged in the same body with the third radiating branch 121, the second radiating branch 112 is located on the side away from the second radiator 12, and the fourth radiating branch 122 is located on the side away from the first radiator 11. At this time, at least part of the feed structure 14 is located on the inside of the first radiator 11 and the second radiator 12. As can be seen, the second radiating branch 112 is arranged in the same body with the fourth radiating branch 122, or the first radiating branch 111 is arranged in the same body with the third radiating branch 121, which increases the flexibility of the structure of the antenna assembly 1, and at the same time increases the flexibility of the installation position of the feed structure 14, so as to facilitate the installation of the antenna assembly 1. At the same time, by changing the installation position of the feed structure 14, the coupling relationship between the first radiating branch 111 and the second radiating branch 112 and between the third radiating branch 121 and the fourth radiating branch 122 can be changed, so as to reduce the interference between the first radiator 11 and the second radiator 12, and further improve the working stability of the first radiator 11 and the second radiator 12.

[0102] Among them, when the first radiating branch 111 is arranged in the same body with the third radiating branch 121, the decoupling device 15 generates three decoupling resonances at 3.4G frequency, 5.6G frequency and 6G frequency, and the isolation at 3.4G frequency is improved to 33dB. The decoupling resonances at 5.6G frequency and 6G frequency constitute a 30dB isolation bandwidth of more than 600MHz. As can be seen, when the first radiating branch 111 is arranged in the same body with the third radiating branch 121, the dual-frequency decoupling can be realized at the same time, and a wideband decoupling effect for 5G can be constituted.

[0103] The second radiating branch 112 and the fourth radiating branch 122 arranged in the same body are connected into a T-shaped structure, or the first radiating branch 111 and the third radiating branch 121 arranged in the same body are connected into a T-shaped structure, which simplifies the structure between the second radiating branch 112 and the fourth radiating branch 122 and between the first radiating branch 111 and the third radiating branch 121, thereby reducing the size of the antenna assembly 1 and reducing the space required for installation of the antenna assembly 1. In addition, the two radiating branches arranged in the same body can also be connected into a Y-shaped structure, and the structure of the two radiating branches arranged in the same body is not specially limited in the present application.

[0104] More specifically, as shown, Figure 11 and Figure 12As shown, the first radiator 11 further includes at least one fifth radiating branch 114, which is connected to the first radiating branch 111, and / or, the fifth radiating branch 114 is connected to the second radiating branch 112; the second radiator 12 further includes at least one sixth radiating branch 124, which is connected to the third radiating branch 121, and / or, the sixth radiating branch 124 is connected to the fourth radiating branch 122.

[0105] In this embodiment, both the first radiator 11 and the second radiator 12 include multiple radiating stubs capable of resonating with signals of specific frequencies. This increases the frequency range of signals that the first radiator 11 and the second radiator 12 can transmit, thereby increasing the operating performance of the first radiator 11 and the second radiator 12, and consequently improving the operating performance and applicability of the antenna assembly 1 and the electronic device. This application does not impose any special limitations on the number, size, installation position, or bending direction of the fifth radiating stub 114 and the sixth radiating stub 124.

[0106] In one embodiment, such as Figure 12 As shown, at least one fifth radiating branch 114 and at least one sixth radiating branch 124 are connected to the common branch 13, and the fifth radiating branch 114 and the sixth radiating branch 124 divide the common branch 13 into multiple segments; the number of decoupling devices 15 is one, and the decoupling device 15 is located in a segment of the common branch 13 near the grounding end 16.

[0107] In this embodiment, the decoupling device 15 is set in a section of the common branch 13 near the ground terminal 16. That is, multiple radiating branches on the common branch 13 are connected to the ground terminal 16 through the decoupling device 15, so that the decoupling device 15 can decouple the antenna assembly 1 when the antenna assembly 1 is working in any frequency band, thereby improving the reliability of the decoupling device 15 and improving the working stability of the antenna assembly 1 and the electronic equipment.

[0108] The single decoupling device 15 generates three decoupling resonances at frequencies of 3.39 GHz, 4 GHz, and 5.56 GHz, respectively. When the frequency of the signal transmitted by antenna assembly 1 is 3.39 GHz, the isolation of antenna assembly 1 is 33 dB; when the frequency of the signal transmitted by antenna assembly 1 is 4 GHz, the isolation is 32.5 dB; and when the frequency of the signal transmitted by antenna assembly 1 is 5.56 GHz, the isolation is 45 dB. The first radiating stub 111 and the second radiating stub 112 generate the decoupling resonances at 3.39 GHz and 5.56 GHz, respectively, with relative bandwidths of 4.4% (3.32 GHz–3.47 GHz) and 6.6% (5.4 GHz–5.77 GHz) for 25 dB isolation. The decoupling resonance at 4 GHz is generated by a secondary parasitic stub, has a narrow bandwidth, and can be considered essentially a frequency-specific effect.

[0109] In another embodiment, as shown in Figure 13 At least one fifth radiation branch 114 and at least one sixth radiation branch 124 are connected to the common branch 13, and the fifth radiation branch 114 and the sixth radiation branch 124 divide the common branch 13 into multiple sections; the number of decoupling devices 15 is multiple, and each section of the common branch 13 is provided with a decoupling device 15.

[0110] In this embodiment, as shown in Figure 13 When the second radiation branch 112 resonates with signals of a specific frequency, all the decoupling devices 15 between the second radiation branch 112 and the ground end 16 work together; when a fifth radiation branch 114 resonates with signals of a specific frequency, all the decoupling devices 15 between the fifth radiation branch 114 and the ground end 16 work together, and at this time, the decoupling devices 15 outside the fifth radiation branch 114 are in a non-working state. Each section of the common branch 13 is provided with a decoupling device 15, and when a certain decoupling device 15 is short-circuited, other decoupling devices 15 can also work normally, thereby improving the reliability of the working of the decoupling device 15 and improving the working stability of the antenna assembly 1 and the electronic device.

[0111] In another embodiment, as shown in Figure 14 The first radiation branch 111, the second radiation branch 112 and the ground end 16 enclose a first space 115, and the third radiation branch 121, the fourth radiation branch 122 and the ground end 16 enclose a second space 125; the antenna assembly 1 further comprises at least one first protruding part 17 and at least one second protruding part 18, and the first protruding part 17 and the second protruding part 18 are both connected to the ground end 16, the first protruding part 17 is arranged in the first space 115, and the second protruding part 18 is arranged in the second space 125.

[0112] In this embodiment, at least one first protruding part 17 is arranged in the first space 115, and at least one second protruding part 18 is arranged in the second space 125, so as to change the distance between the first radiation body 11 and the ground end 16 and the distance between the second radiation body 12 and the ground end 16, thereby changing the coupling relationship between the first radiation branch 111 and the second radiation branch 112 and the coupling relationship between the third radiation branch 121 and the fourth radiation branch 122, so that the decoupling resonances of the first radiation body 11 and the second radiation body 12 are simultaneously moved to low frequencies, and are respectively moved from 3.9G and 5.2G to 3.6G and 4.5G, and the relative frequency multiplication relationship of the double decoupling resonances is reduced from 1.33 to 1.25. As can be seen, the decoupling resonance spacing of the first radiation body 11 and the second radiation body 12 is reduced, that is, the interference between the first radiation body 11 and the second radiation body 12 is reduced, thereby improving the working stability of the first radiation body 11 and the second radiation body 12.

[0113] The cross section of the first protruding part 17 and the second protruding part 18 can be a rectangle, a semicircle, a triangle, etc. The application does not specially limit the cross section shape of the first protruding part 17 and the second protruding part 18. The first protruding part 17 and the second protruding part 18 can be fixedly connected with the grounding end 16 or integrally formed, so as to increase the flexibility of the structure of the first protruding part 17, the second protruding part 18 and the grounding end 16.

[0114] In addition, the working frequency band of the antenna assembly 1 in any of the above embodiments is for illustration only, and the application does not specially limit the working frequency band of the antenna assembly 1.

[0115] It should be noted that part of the patent application file contains content protected by copyright. Except for making copies of the patent document content of the patent file or record of the patent office, the copyright owner retains the copyright.

Claims

1. An antenna assembly, characterized by The antenna assembly comprises: a first radiator comprising a first radiating branch and a second radiating branch with opposite bending directions, and a first gap between the first radiating branch and the second radiating branch; a second radiator comprising a third radiating branch and a fourth radiating branch with opposite bending directions, and a second gap between the third radiating branch and the fourth radiating branch; the first radiating branch and the third radiating branch are arranged in a common body to form a common branch; the second radiating branch extends towards the first radiating branch, and the fourth radiating branch extends towards the third radiating branch; a feeding structure electrically connected to the first radiating branch and the third radiating branch respectively, and at least part of the feeding structure is located inside the first radiator and the second radiator; a decoupling device arranged on the common branch, and the common branch is electrically connected to a ground end of the antenna assembly through the decoupling device.

2. The antenna assembly of claim 1, wherein, The first radiating branch and the third radiating branch arranged in a common body are connected in a T-shaped structure.

3. The antenna assembly of claim 1, wherein, The first radiator further comprises at least one fifth radiating branch connected to the first radiating branch and / or connected to the second radiating branch. The second radiator further comprises at least one sixth radiating branch connected to the third radiating branch and / or connected to the fourth radiating branch.

4. The antenna assembly of claim 3, wherein, The common branch is connected with at least one fifth radiating branch and at least one sixth radiating branch, and the fifth radiating branch and the sixth radiating branch separate the common branch into multiple segments. The number of the decoupling devices is one, and the decoupling device is arranged on a segment of the common branch close to the ground end.

5. The antenna assembly of claim 3, wherein, The common branch is connected with at least one fifth radiating branch and at least one sixth radiating branch, and the fifth radiating branch and the sixth radiating branch separate the common branch into multiple segments. The number of the decoupling devices is multiple, and the decoupling device is arranged on each segment of the common branch.

6. The antenna assembly of claim 1, wherein, The first radiating branch, the second radiating branch and the ground end enclose a first space, and the third radiating branch, the fourth radiating branch and the ground end enclose a second space. The antenna assembly further comprises at least one first protrusion and at least one second protrusion, and the first protrusion and the second protrusion are both connected to the ground end, the first protrusion is arranged in the first space, and the second protrusion is arranged in the second space.

7. The antenna assembly of any one of claims 1-5, wherein, The decoupling device comprises one or more decoupling capacitors.

8. The antenna assembly of any one of claims 1-5, wherein, The decoupling device comprises a decoupling capacitor and an inductor, the number of the decoupling capacitors is one or more, and the number of the inductor is one or more.

9. An electronic device, comprising: The electronic device comprises: a body; an antenna assembly according to any one of claims 1-8, and the antenna assembly is electrically connected to the body through the feeding structure.

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