Antenna assembly, communication equipment and vehicle

Abstract

The invention discloses an antenna assembly, communication equipment and a vehicle, and aims to solve the problem that the isolation degree between adjacent antennas is relatively small. In the antenna assembly, a first feed end and a second feed end are arranged on a second radiator at an interval; one end of the conductive bridge is coupled with the first radiator, and the other end of the conductive bridge is coupled with the second radiator; the antenna assembly comprises a first antenna and a second antenna, the first antenna comprises a first feed end, a first radiator, a conductive bridge and a second radiator, and the second antenna comprises a second feed end, a first radiator, a conductive bridge and a second radiator; when signals of the same frequency band are fed into the antenna assembly through the first feed end and the second feed end, the first antenna and the second antenna are used for working in the same frequency band, and the first antenna and the second antenna have high isolation.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and specifically to an antenna assembly, communication equipment and a vehicle. Background Art

[0002] Vehicles, mobile phones and other devices are generally equipped with antenna assemblies, through which signals can be sent and received. In the related art, the antenna assembly includes multiple antenna branches to achieve signal transmission and reception through the multiple antenna branches. However, in the related art, when the antenna assembly is working, the signals on adjacent antenna branches are coupled with each other, resulting in a small isolation between adjacent antennas. Summary of the invention

[0003] The embodiments of the present application provide an antenna assembly, a communication device, and a vehicle, which can improve the isolation between adjacent antennas and achieve decoupling of a first antenna and a second antenna.

[0004] In a first aspect, an embodiment of the present application provides an antenna assembly, comprising: a first radiator, a second radiator and a conductive bridge; the second radiator is spaced apart from the first radiator, and a first feeding end and a second feeding end are spaced apart on the second radiator; the conductive bridge is disposed between the first radiator and the second radiator, the first end of the conductive bridge is coupled and connected to the first radiator, and the second end of the conductive bridge is coupled and connected to the second radiator; the antenna assembly comprises a first antenna and a second antenna, the first antenna comprises: a first feeding end, a first radiator, a conductive bridge, and a second radiator, the second antenna comprises a second feeding end, a first radiator, a conductive bridge, and a second radiator, and the operating frequency bands of the first antenna and the second antenna comprise the same frequency band.

[0005] Through the above configuration, when the antenna assembly is fed through the first feeding end and the second feeding end, the first antenna and the second antenna both operate in the same frequency band, and there is a high degree of isolation between the first antenna and the second antenna, thereby achieving decoupling of the first antenna and the second antenna.

[0006] In some embodiments that may include the above embodiments, the first radiator includes a first radiating branch located on one side of the conductive bridge and a second radiating branch located on the other side of the conductive bridge, and the conductive bridge is coupled to the first radiating branch and the second radiating branch.

[0007] In some embodiments that may include the above embodiments, the first radiator further includes a connecting branch, and an end of the first radiating branch close to the second radiating branch and an end of the second radiating branch close to the first radiating branch are connected through the connecting branch. Through the above arrangement, the impedance between the conductive bridge and the first radiating branch, and the impedance between the conductive bridge and the second radiating branch can be reduced.

[0008] In some embodiments that may include the above embodiments, an end of the first radiation branch close to the second radiation branch is spaced from an end of the second radiation branch close to the first radiation branch. In this way, the impedance between the conductive bridge and the first radiation branch can be increased, and the impedance between the conductive bridge and the second radiation branch can also be increased, which is equivalent to increasing the length of the current flow path on the first radiation branch and the second radiation branch, thereby reducing the length of the first radiation branch and the second radiation branch along their extension direction, so as to achieve miniaturization of the antenna assembly.

[0009] In some embodiments that may include the above embodiments, the distance between one end of the first radiation branch close to the second radiation branch and one end of the second radiation branch close to the first radiation branch is 0.05-0.25 times the length of the first radiator. In this way, while ensuring that there is a certain impedance between the conductive bridge and the first radiation branch and the second radiation branch, it is possible to avoid the first radiation branch and the second radiation branch being too short due to the distance between them being too large, so as not to affect the performance of the antenna assembly.

[0010] In some embodiments that may include the above embodiments, a first groove and / or a first protrusion is provided on the second radiator between the first feeding terminal and the second feeding terminal. The first groove can increase the impedance between the first feeding terminal and the second feeding terminal, and the first protrusion can reduce the impedance between the first feeding terminal and the second feeding terminal, so as to adjust the impedance between the first feeding terminal and the second feeding terminal.

[0011] In some embodiments that may include the above embodiments, the conductive bridge includes a first conductive bridge and a second conductive bridge that are spaced apart, the first end of the first conductive bridge and the first end of the second conductive bridge are both coupled to the second radiator, the second end of the first conductive bridge is coupled to an end of the first radiation branch close to the second radiation branch, and the second end of the second conductive bridge is coupled to an end of the second radiation branch close to the first radiation branch. In this arrangement, the impedance of the first antenna can be adjusted through the first conductive bridge, and the impedance of the second antenna can be adjusted through the second conductive bridge, which facilitates impedance matching of the first antenna and the second antenna.

[0012] In some embodiments that may include the above embodiments, the first midpoint of the first radiator along the extension direction and the second midpoint of the second radiator along the extension direction are spaced apart in the extension direction of the first radiator, the second midpoint is located between the first feeding end and the second feeding end, and the distance between the first midpoint and the first feeding end is smaller than the distance between the second midpoint and the second feeding end. The antenna assembly is an asymmetric structure, and such an arrangement allows the antenna assembly to adapt to irregular installation spaces, thereby improving the adaptability of the antenna assembly, and the antenna assembly can adapt to a more complex overall layout.

[0013] In some embodiments that may include the above embodiments, the distance between the third midpoint of the connection line of the first conductive bridge and the second conductive bridge and the first midpoint in the extension direction of the first radiator is less than or equal to 2 mm. The third midpoint and the first midpoint are substantially coincident in the extension direction of the first radiator, and the conductive bridge is offset relative to the second radiator along with the first radiator, so that the conductive bridge is still located at a substantially middle position of the first radiator. In this way, the isolation of the first decoupling mode can be improved to improve the performance of the antenna.

[0014] In some embodiments that may include the above embodiments, the first conductive bridge and the second radiator are coupled via a first inductor structure, or the first conductive bridge and the first radiation branch are coupled via a first inductor structure. The first inductor structure can increase the impedance between the first radiation branch and the second radiator, increase the electrical length of the first antenna, and thereby reduce the common mode operating frequency.

[0015] In some embodiments that may include the above embodiments, a first groove may also be provided on the second radiator between the first feeding end and the second feeding end. The second radiator between the first feeding end and the second feeding end is a necessary passage for the differential mode current in the first decoupling mode and the second decoupling mode. The first groove may increase the impedance between the first feeding end and the second feeding end to extend the differential mode operating frequency. Through the above arrangement, the first decoupling mode and the second decoupling mode may be moved toward a low frequency, so that the first operating frequency band is the 2.4 GHz frequency band and the second operating frequency band is the 5 GHz frequency band.

[0016] In some embodiments that may include the above embodiments, the working frequency band of the first antenna includes the first working frequency band and the second working frequency band, and the working frequency band of the second antenna includes the first working frequency band and the second working frequency band. The first antenna is used to generate the first resonance and the second resonance in the first working frequency band and the second working frequency band, respectively, and the second antenna is used to generate the third resonance and the fourth resonance in the first working frequency band and the second working frequency band, respectively. In this way, the antenna assembly can operate in the first working frequency band and the second working frequency band, so that the antenna assembly has a larger bandwidth.

[0017] In some embodiments that may include the above-mentioned embodiments, the current distribution corresponding to the first resonance is a unidirectional current flowing from the first feeding end via a portion of the second radiator, the conductive bridge and the first radiating branch to the open end of the first radiating branch, the current distribution corresponding to the third resonance is a unidirectional current flowing from the second feeding end via a portion of the second radiator, the conductive bridge and the second radiating branch to the open end of the second radiating branch, the current distribution corresponding to the second resonance is a unidirectional current flowing from the first feeding end via the second radiator to the first open end of the second radiator, and the current distribution corresponding to the fourth resonance is a unidirectional current flowing from the second feeding end via the second radiator to the second open end of the second radiator.

[0018] In some embodiments that may include the above embodiments, the working frequency band of the first antenna and the working frequency band of the second antenna further include a third working frequency band, and the center frequency of the third working frequency band is greater than the center frequency of the first working frequency band and the center frequency of the second working frequency band. In this way, the bandwidth covered by the antenna assembly can be further increased.

[0019] The first antenna is used to generate a fifth resonance in the third working frequency band, and the second antenna is used to generate a sixth resonance in the third working frequency band; the fifth resonance corresponds to a higher-order mode of the first resonance, and the sixth resonance corresponds to a higher-order mode of the third resonance.

[0020] In some embodiments that may include the above embodiments, the center frequency of the second operating frequency band is greater than the center frequency of the first operating frequency band, and the frequency ratio of the center frequency of the second operating frequency band to the center frequency of the first operating frequency band is 1.68-2.8; or, the center frequency of the second operating frequency band is less than the center frequency of the first operating frequency band, and the frequency ratio of the center frequency of the first operating frequency band to the center frequency of the second operating frequency band is 1.68-2.8. In some embodiments where the antenna assembly also includes a third decoupling mode, the ratio between the second operating frequency band and the third first operating frequency band can be 1.68-2.8, which can make the second operating frequency band and the third operating frequency band close to each other, thereby forming a broadband operating frequency band.

[0021] Exemplarily, the first operating frequency band can be a 2.4 GHz band (such as 2.4 GHz-2.4835 GHz), the second operating frequency band can be a 5 GHz band (such as 5.15 GHz-5.85 GHz), and the third operating frequency band can be a 6 GHz band (such as 5.925 GHz-7.125 GHz), so that the antenna assembly can cover various frequency bands of the WLAN, thereby improving the usage bandwidth and adaptation performance of the antenna assembly and the communication equipment.

[0022] In some embodiments that may include the above embodiments, both the first radiation branch and the second radiation branch have a preset position, and the current at the preset position is close to zero in the first working frequency band, and the current at the preset position is close to a maximum value in the third working frequency band.

[0023] In some embodiments that may include the above embodiments, a second groove is provided at a preset position on the first radiation branch and the second radiation branch. The impedance of the preset position can be increased by the second groove, so that the third operating frequency band is moved to a low frequency to cover the 6 GHz band. Since the current at the preset position in the first operating frequency band is close to zero, the second groove does not affect the antenna assembly in the first operating frequency band.

[0024] In some embodiments that may include the above embodiments, the length of the conductive bridge along the extension direction of the first radiator is 0.05-0.25 times the length of the first radiator. Exemplarily, when the length of the first radiator 10 is 45 mm, the length of the conductive bridge 30 may be 2.25 mm-11.25 mm (such as 2.25 mm, 7 mm, 11.25 mm, etc.). If the length of the conductive bridge is too small, it is easy to cause the impedance of the conductive bridge to be too large, thereby causing the first working frequency band, the second working frequency band, and the third working frequency band to shift to a low frequency; if the length of the conductive bridge is too large, it is easy to cause the impedance of the conductive bridge to be too small, thereby causing the first working frequency band, the second working frequency band, and the third working frequency band to shift to a high frequency. By making the length of the conductive bridge 2.25mm-11.25mm (such as 7mm), the first operating frequency band can be the 2.4GHz band (such as 2.4GHz-2.4835GHz), the second operating frequency band can be the 5GHz band (such as 5.15GHz-5.85GHz), and the third operating frequency band can be the 6GHz band (such as 5.925GHz-7.125GHz), so that the antenna assembly can cover various frequency bands of WLAN.

[0025] In some embodiments that may include the above embodiments, the second radiator includes a third radiating branch and a fourth radiating branch that are spaced apart, the first feed end is disposed on the third radiating branch, the second feed end is disposed on the fourth radiating branch, and the conductive bridge is coupled to both the third radiating branch and the fourth radiating branch. By arranging the third radiating branch and the fourth radiating branch at intervals, the impedance between the first feed end and the second feed end can be increased, thereby optimizing the differential mode path impedance in the second decoupling mode, and improving the isolation in the 6 GHz frequency band (5.925 GHz-7.125 GHz).

[0026] In some embodiments that may include the above embodiments, the distance between the third radiation branch node and the fourth radiation branch node is 0.05-0.25 times (such as 0.05, 0.1, 0.25, etc.) the length of the first radiator. In this way, the isolation of the 6 GHz frequency band can be improved while avoiding the distance between the third radiation branch node and the fourth radiation branch node being too large or too small.

[0027] In some embodiments that may include the above embodiments, the first feed end includes a first feed branch disposed on the second radiator, and the second feed end includes a second feed branch disposed on the second radiator. The first feed branch and the second feed branch extend in a direction away from the second radiator, and the current path length on the first antenna and the second antenna can be adjusted; in addition, since the first feed branch and the second branch have a certain impedance, impedance matching of the first antenna and the second antenna can be achieved through the first feed branch and the second feed branch.

[0028] In some embodiments that may include the above embodiments, the antenna assembly further includes a second inductance structure and a third inductance structure, one end of the second inductance structure is coupled to the first feed branch, the other end of the second inductance structure is grounded, one end of the third inductance structure is coupled to the second feed branch, and the other end of the third inductance structure is grounded. The second inductance structure facilitates the grounding of the current in the first antenna, and the inductance value of the second inductance structure is reasonably set, so that the impedance matching of the first antenna can be achieved. Similarly, the third inductance structure facilitates the grounding of the current in the second antenna, and the inductance value of the third inductance structure is reasonably set, so that the impedance matching of the second antenna can be achieved.

[0029] In some embodiments that may include the above embodiments, the first feeding end and the second feeding end are spaced apart along the extension direction of the second radiator, and the distance between the first feeding end and the second feeding end is 0.25-0.5 times the length of the second radiator. For example, the distance between the first feeding end and the second feeding end is about 1 / 3 of the length of the second radiator (the distance between the first feeding end and the second feeding end is 1 / 3±3 mm of the length of the second radiator).

[0030] Exemplarily, the distance between the first feeding terminal and the second feeding terminal may be 6 mm-12 mm (e.g., 6 mm, 10 mm, 12 mm, etc.) It is understandable that by reasonably setting the distance between the first feeding terminal and the second feeding terminal, and the length of the conductive bridge, the current length of the first antenna and the second antenna may be adjusted so that the first antenna and the second antenna may meet the requirements of each decoupling mode.

[0031] In some embodiments that may include the above embodiments, the width of the second radiator along the direction perpendicular to the extension is 1 / 3-3 times the width of the first radiator along the direction perpendicular to the extension, and the width of the second radiator along the direction perpendicular to the extension and the width of the first radiator along the direction perpendicular to the extension are both greater than or equal to 1 mm. Through the above arrangement, the widths of the first radiator and the second radiator can be reduced while avoiding excessive impedance of the first radiator and the second radiator, and the volume of the antenna assembly can be reduced, so as to facilitate miniaturization of the antenna assembly.

[0032] In some embodiments that may include the above embodiments, the length of the second radiator is less than the length of the first radiator, and the ratio of the length of the second radiator to the length of the first radiator may be 0.46-0.66; or, the length of the second radiator is greater than the length of the first radiator, and the ratio of the length of the first radiator to the length of the second radiator may be 0.46-0.66. In this way, the second working frequency band can be close to the third working frequency band, thereby forming a broadband working frequency band.

[0033] In some embodiments that may include the above embodiments, the antenna assembly further includes a floor, and the first radiator and the second radiator are both spaced apart from the floor. A clearance area may be formed between the floor and the first radiator.

[0034] In some embodiments that may include the above embodiments, the second radiator between the first feeding end and the second feeding end is coupled to ground. This arrangement facilitates the grounding of currents in the first antenna and the second antenna.

[0035] In some embodiments that may include the above embodiments, the antenna assembly further includes a grounding branch, one end of the grounding branch is coupled to the second radiator between the first feeding terminal and the second feeding terminal, and the other end of the grounding branch is coupled to the ground. With such an arrangement, the structure of the antenna assembly is simple, and the manufacture of the antenna assembly is convenient.

[0036] In some embodiments that may include the above embodiments, the antenna assembly further includes a fourth inductor structure, and the ground branch is coupled to the ground through the fourth inductor structure. Exemplarily, the inductance value of the fourth inductor structure may be 1nH-5nH (such as 1nH, 3nH, 5nH, etc.). Through the above settings, the impedance matching of the antenna assembly may be adjusted so that the first operating frequency band of the antenna assembly is the 2.4GHz frequency band, the second operating frequency band is the 5GHz frequency band, and the third operating frequency band is the 6GHz frequency band, so that the antenna assembly can cover various frequency bands of the WLAN.

[0037] In some embodiments that may include the above embodiments, the antenna assembly further includes a capacitor structure, and the second radiator between the first feeding end and the second feeding end is coupled to ground via the capacitor structure. Exemplarily, the capacitance value of the capacitor structure may be 0.2pF-0.6pF (such as 0.2pF, 0.4pF, 0.6pF, etc.). Through the above settings, the impedance matching of the antenna assembly may be adjusted so that the first operating frequency band of the antenna assembly is the 2.4GHz frequency band, the second operating frequency band is the 5GHz frequency band, and the third operating frequency band is the 6GHz frequency band, so that the antenna assembly can cover various frequency bands of the WLAN.

[0038] In some embodiments that may include the above embodiments, the capacitor structure includes a conductive block, the conductive block is coupled to the ground; a capacitor slot is provided on the second radiator between the first feeding end and the second feeding end, the conductive block is provided in the capacitor slot, and the conductive block is provided at intervals from the bottom and the wall of the capacitor slot. In this way, a capacitor structure is formed between the conductive block and the side wall of the capacitor slot, and no additional capacitor structure is required, which simplifies the structure of the antenna assembly. In addition, the capacitor block is located in the capacitor slot, which can also improve the compactness of the structure of the antenna assembly.

[0039] In some embodiments that may include the above embodiments, along the extension direction of the first radiator, the difference in length of the part of the first radiator on both sides of the conductive bridge is less than or equal to 0.1 times the length of the first radiator; along the extension direction of the second radiator, the difference in length of the part of the second radiator on both sides of the conductive bridge is less than or equal to 0.1 times the length of the second radiator. In this way, the antenna assembly is an axisymmetric structure relative to the symmetry axis, and the first antenna and the second antenna have the same structure and size.

[0040] In some embodiments that may include the above embodiments, the difference between the distance between the first feeding terminal and the conductive bridge and the distance between the second feeding terminal and the conductive bridge is less than or equal to 0.1 times the length of the conductive bridge along the extension direction of the first radiator, so that the distances between the first feeding terminal and the second feeding terminal and the conductive bridge are equal, thereby improving the symmetry of the antenna assembly.

[0041] In some embodiments that may include the above embodiments, the conductive bridge includes a first conductive bridge and a second conductive bridge that are spaced apart, the first end of the first conductive bridge and the first end of the second conductive bridge are both coupled to the second radiator, the second end of the first conductive bridge is coupled to an end of the first radiation branch close to the second radiation branch, and the second end of the second conductive bridge is coupled to an end of the second radiation branch close to the first radiation branch; the difference in length between the first conductive bridge and the second conductive bridge along the extension direction of the first radiator is less than 1 mm, so that the sizes of the first conductive bridge and the second conductive bridge are approximately equal, further improving the symmetry of the antenna assembly.

[0042] In some embodiments that may include the above embodiments, the first radiator includes a first radiating branch, a second radiating branch and a fifth radiating branch, the conductive bridge includes a first conductive bridge, a second conductive bridge and a third conductive bridge, and the second radiator includes a third radiating branch, a fourth radiating branch and a sixth radiating branch; the first radiating branch, the third radiating branch and the first conductive bridge are located in a first plane, the first radiating branch is coupled to the third radiating branch through the first conductive bridge, and the third radiating branch is provided with a first feeding end; the second radiating branch, the fourth radiating branch and the second conductive bridge are located in a second plane, the second radiating branch is coupled to the fourth radiating branch through the second conductive bridge, and the fourth radiating branch is provided with a second feeding end; the third radiating branch, the sixth radiating branch and the third conductive bridge are located in a third plane, the third radiating branch is coupled to the sixth radiating branch through the third conductive bridge, and the sixth radiating branch is provided with a third feeding end; the first plane, the second plane and the third plane intersect at the same straight line perpendicular to the floor, and the first plane, the second plane and the third plane are symmetrically arranged around the center of the straight line.

[0043] Through the above configuration, the first antenna includes a first feeding end, a third radiating branch, a first conductive bridge, and a first radiating branch; the second antenna includes a second feeding end, a fourth radiating branch, a second conductive bridge, and a second radiating branch; and the third antenna includes a third feeding end, a fifth radiating branch, a third conductive bridge, and a sixth radiating branch. Any one of the first antenna, the second antenna, and the third antenna can be decoupled from the other two, thereby achieving self-decoupling of the antenna assembly.

[0044] In addition, in the implementation mode where the first working frequency band of the antenna assembly is the 2.4 GHz band, the second working frequency band is the 5 GHz band, and the third working frequency band is the 6 GHz band, and the frequency band where S11 is less than or equal to -6 dB and S21 is less than or equal to 15 dB can cover 2.4 GHz-2.5 GHz and 4.59 GHz-9.4 GHz, the antenna assembly has a wide working frequency band bandwidth while ensuring a high isolation (ultra-wideband high isolation MIMO antenna).

[0045] In the second aspect, an embodiment of the present application also provides an antenna assembly, including: a conductive plate, a first radiator, a second radiator and a conductive bridge; the first radiator includes a first slot arranged on the conductive plate; the second radiator includes a second slot arranged on the conductive plate, the second radiator is spaced apart from the first radiator, and a first feeding end and a second feeding end are spaced apart on the conductive plate corresponding to the second radiator; the conductive bridge includes a third slot arranged between the first radiator and the second radiator, and the third slot is connected to the first slot and the second slot; the antenna assembly includes a first antenna and a second antenna, the first antenna includes: a first feeding end, a first radiator, a conductive bridge, and a second radiator, the second antenna includes a second feeding end, a first radiator, a conductive bridge, and a second radiator, and the working frequency bands of the first antenna and the second antenna include the same frequency band.

[0046] Through the above configuration, when the antenna assembly is fed through the first feeding end or the second feeding end, the first antenna and the second antenna both operate in the same frequency band, and there is a high degree of isolation between the first antenna and the second antenna, thereby achieving decoupling of the first antenna and the second antenna.

[0047] In a third aspect, an embodiment of the present application further provides a communication device, including a housing and the antenna assembly as described above, wherein the housing is configured to form an installation cavity, and the antenna assembly is disposed in the installation cavity.

[0048] The communication device provided in the embodiments of the present application includes the antenna assembly in any of the above embodiments, so the two can solve the same technical problems and achieve the same technical effects.

[0049] In a fourth aspect, an embodiment of the present application further provides a vehicle, comprising a vehicle body and the communication device as described above, wherein the communication device is arranged on the vehicle body.

[0050] The vehicle provided in the embodiments of the present application includes the communication device in any of the above embodiments, so the two can solve the same technical problems and achieve the same technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 1 ;

[0052] Figure 2 The current flow direction of the antenna assembly provided in the embodiment of the present application in the first decoupling mode Figure 1 ;

[0053] Figure 3 The current flow direction of the antenna assembly provided in the embodiment of the present application in the first decoupling mode Figure 2 ;

[0054] Figure 4 A schematic diagram of the connection between the antenna assembly and the transceiver provided in an embodiment of the present application;

[0055] Figure 5a Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 2 ;

[0056] Figure 5b A schematic diagram of a structure in which the length of the second radiator of the antenna assembly provided in an embodiment of the present application is greater than the length of the first radiator;

[0057] Figure 6 The current flow direction of the antenna assembly provided by the embodiment of the present application in the second decoupling mode Figure 1 ;

[0058] Figure 7 The current flow direction of the antenna assembly provided in the embodiment of the present application in the second decoupling mode Figure 2 ;

[0059] Figure 8 The current flow direction of the antenna assembly provided in the embodiment of the present application in the third decoupling mode Figure 1 ;

[0060] Fig. 9 The current flow direction of the antenna assembly provided in the embodiment of the present application in the third decoupling mode Figure 2 ;

[0061] Fig.10 for Figure 1 S-parameter curve of the antenna assembly shown;

[0062] Fig.11 is a graph of S21 corresponding to different lengths of the second radiator;

[0063] Fig.12 The S21 curve diagram of the antenna assembly corresponding to different lengths of the conductive bridge;

[0064] Fig.13 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 3 ;

[0065] Fig.14 Antenna matching of the antenna assembly provided in the embodiment of the present application Figure 1 ;

[0066] Fig.15 for Fig.13 S-parameter curve of the antenna assembly shown;

[0067] Fig.16 for Fig.13 The antenna efficiency curve of the antenna assembly shown;

[0068] Fig.17 is the directional diagram of the antenna assembly in the first operating frequency band;

[0069] Fig.18 is a directional diagram of the antenna assembly in the second operating frequency band;

[0070] Fig.19 is a directional diagram of the antenna assembly in the third operating frequency band;

[0071] Fig. 20 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 4 ;

[0072] Fig.21 Antenna matching of the antenna assembly provided in the embodiment of the present application Figure 2 ;

[0073] Fig. 22 for Fig. 20 S-parameter curve of the antenna assembly shown;

[0074] Fig.23 for Fig. 20 A graph of the envelope correlation coefficient of the antenna assembly shown;

[0075] Fig.24 Structural schematic diagram 5 of the antenna assembly provided in the embodiment of the present application;

[0076] Fig.25 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 6 ;

[0077] Fig.26 for Fig.25 a top view of the antenna assembly shown;

[0078] Fig. 27 is a current distribution diagram on the antenna component when feeding through the first feeding end in the first decoupling mode;

[0079] Fig.28 is a current distribution diagram on the antenna component when feeding through the second feeding end in the first decoupling mode;

[0080] Fig.29 is a current distribution diagram on the antenna component when feeding through the first feeding end in the second decoupling mode;

[0081] Fig.30 is a current distribution diagram on the antenna component when feeding through the second feeding end in the second decoupling mode;

[0082] Fig.31 is a current distribution diagram on the antenna component when feeding through the first feeding end in the third decoupling mode;

[0083] Fig.32 is a current distribution diagram on the antenna component when feeding through the second feeding end in the fourth decoupling mode;

[0084] Fig.33 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 7 ;

[0085] Fig.34 for Fig.33 S-parameter curve of the antenna assembly shown;

[0086] Fig.35 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 8 ;

[0087] Fig.36 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 9 ;

[0088] Fig.37 for Fig.36 The S21 parameter curve corresponding to the antenna assembly shown;

[0089] Fig.38 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 10 ;

[0090] Fig.39 Antenna matching of the antenna assembly provided in the embodiment of the present application Figure 3 ;

[0091] Fig.40 for Fig.38 The S21 parameter curve corresponding to the antenna assembly shown;

[0092] Fig.41 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 10 one;

[0093] Fig.42 for Fig.41 S-parameter curve corresponding to the antenna assembly shown;

[0094] Fig.43 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 10 two;

[0095] Fig.44 Antenna matching of the antenna assembly provided in the embodiment of the present application Figure 4 ;

[0096] Fig.45 for Fig.43 S-parameter curve corresponding to the antenna assembly shown;

[0097] Fig.46 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 10 three;

[0098] Fig.47 for Fig.43 S-parameter curve corresponding to the antenna assembly shown;

[0099] Fig.48 An S parameter curve diagram of the antenna assembly before and after the second groove is set at the preset positions of the first radiation branch and the second radiation branch;

[0100] Fig.49 This is a schematic diagram of the efficiency of the antenna assembly after the second groove is set;

[0101] Fig.50 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 10 Four;

[0102] Fig.51 for Fig.50 A schematic diagram of the S parameters of the antenna assembly shown;

[0103] Fig.52 This is the current distribution diagram of the antenna assembly at 2.45GHz when the ground branch is set;

[0104] Fig.53 This is the current distribution diagram of the antenna component at 5.1GHz when the ground branch is set;

[0105] Fig.54 This is the current distribution diagram of the antenna assembly at 5.7GHz when the ground branch is set;

[0106] Fig.55This is the current distribution diagram of the antenna assembly at 7.1GHz when the ground branch is set;

[0107] Fig.56 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 10 five;

[0108] Fig.57 for Fig.56 A schematic diagram of the S parameters of the antenna assembly shown;

[0109] Fig.58 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 10 six;

[0110] Fig.59 for Fig.58 A schematic diagram of the S parameters of the antenna assembly shown;

[0111] Fig.60 It is a comparison diagram of S21 curves when the grounding branch is directly grounded, the grounding branch is grounded through the fourth inductor structure, and the grounding branch is grounded through the capacitor structure;

[0112] Fig.61 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 10 seven;

[0113] Fig.62 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 10 eight;

[0114] Fig.63 for Fig.62 A schematic diagram of the structure of the first radiator and the second radiator;

[0115] Fig.64 Antenna matching diagram 5 of the antenna assembly provided in the embodiment of the present application;

[0116] Fig.65 for Fig.62 S-parameter curve of the antenna assembly shown;

[0117] Fig.66 for Fig.62 a graph of antenna efficiency of the antenna assembly shown;

[0118] Fig.67 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 10 Nine;

[0119] Fig.68 for Fig.67 a top view of the antenna assembly shown;

[0120] Fig.69 for Fig.67A schematic diagram of the structure of the first antenna;

[0121] Fig.70 for Fig.67 The current distribution diagram when the antenna feeds a first working frequency band signal to the first feeding end;

[0122] Fig.71 for Fig.67 A current distribution diagram when the antenna feeds a second working frequency band signal to the first feeding end;

[0123] Fig.72 Antenna matching of the antenna assembly provided in the embodiment of the present application Figure 6 ;

[0124] Fig.73 for Fig.67 S-parameter curve of the antenna assembly shown;

[0125] Fig.74 Schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application Figure 2 ten.

[0126] Description of reference numerals:

[0127] 10: first radiator; 100: first antenna; 101: first radiating branch; 102: second radiating branch; 103: second groove; 104: fifth radiating branch; 110: transceiver; 111: first transceiver port; 112: second transceiver port; 113: third transceiver port; 114: fourth transceiver port; 120: first switch device; 130: second switch device; 140: third switch device; 150: fourth switch device; 160: first combiner; 170: second combiner; 20: second radiator; 200: second antenna; 201: third radiating branch; 202: fourth radiating branch; 203: first groove; 204: first feed end; 2041: first feed end electrical branch; 2051: second feeding branch; 205: second feeding end; 206: sixth radiating branch; 207: second slot; 209: third feeding end; 30: conductive bridge; 300: third antenna; 301: first conductive bridge; 302: second conductive bridge; 303: first inductor structure; 304: first fixed branch; 305: second fixed branch; 306: third slot; 309: third conductive bridge; 40: grounding branch; 401: fourth inductor structure; 402: capacitor structure; 403: conductive block; 404: capacitor slot; 50: floor; 60: substrate; 601: bracket; 602: first dielectric plate; 603: second dielectric plate; 604: third dielectric plate; 70: conductive plate. DETAILED DESCRIPTION

[0128] 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 of the embodiments.

[0129] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0130] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components schematically placed in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components placed in the drawings.

[0131] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, an electrical connection, a coupled connection, or a detachable connection, or an integral one; it can be directly connected or indirectly connected through an intermediate medium. Among them, coupling can be understood as direct coupling and / or indirect coupling, and "coupled connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as the physical contact and electrical conduction of components; it can also be understood as the form in which different components in the circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitor through coupling between the gap between two conductive parts.

[0132] The capacitance mentioned in the embodiments of the present application can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to a capacitive component, such as a capacitor element; distributed capacitance (or distributed capacitance) refers to an equivalent capacitance formed by two conductive parts separated by a certain gap. Lumped capacitance can include a non-variable capacitance and / or a variable capacitance; distributed capacitance can include a finger-type capacitance and / or distributed capacitance formed in other forms.

[0133] The inductance mentioned in the embodiments of the present application can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to an inductive component, such as an inductor; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive parts, such as the equivalent inductance formed by the conductor due to curling or rotation.

[0134] Radiator, or antenna branch: is a device in the antenna used to receive / send electromagnetic wave radiation. In some cases, the narrow sense of "antenna" is to be understood as a radiator, which converts the waveguide energy from the transmitter into radio waves, or converts radio waves into waveguide energy, which is used to radiate and receive radio waves. The modulated high-frequency current energy (or waveguide energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, and is converted into a certain polarized electromagnetic wave energy by the radiator and radiated in the desired direction. The receiving radiator converts a certain polarized electromagnetic wave energy from a specific direction in space into modulated high-frequency current energy, which is transmitted to the receiver input via the feeder line.

[0135] The radiator (or antenna branch) may include a conductor with a specific shape and size, such as a linear or sheet shape, etc. The present application does not limit the specific shape. In one embodiment, the linear radiator may be referred to as a linear antenna. In one embodiment, the linear radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, the linear radiator may be implemented by a bracket conductor, and may also be referred to as a bracket antenna. In one embodiment, the linear radiator, or the radiator of the linear antenna, has a wire diameter (e.g., including thickness and width) much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna generally includes two radiating branches, and each branch is fed by a feeding unit from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted F antenna because its side view is an inverted F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also known as PIFA, Planar Inverted F Antenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes a circle, a rectangle, a ring, etc., and the present application does not limit the specific shape. The structure of the microstrip antenna is generally composed of a dielectric substrate, a radiator and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0136] The radiator (or antenna branch) may also include a slot or a slit formed on the conductor, for example, a closed or semi-closed slot or slit formed on the grounded conductor surface. In one embodiment, a slotted or slit radiator may be referred to as a slot antenna or a slot antenna. In one embodiment, the radial dimension (for example, including the width) of the slot or slit of the slot antenna / slot antenna is much smaller than the wavelength (for example, the dielectric wavelength) (for example, less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (for example, the dielectric wavelength) (for example, the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slit may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slit (for example, an opening is added to a closed slot or slit) may be referred to as an open slot antenna. In some embodiments, the slot shape is a long strip. In some embodiments, the length of the slot is about half a wavelength (for example, the dielectric wavelength). In some embodiments, the length of the slot is about an integer multiple of the wavelength (for example, one times the dielectric wavelength). In some embodiments, the slot can be fed by a transmission line connected across one or both sides thereof, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a conductive frame with both ends grounded, which can also be called a frame antenna; in this embodiment, it can be regarded as that the slot antenna or slot antenna includes a linear radiator, which is spaced apart from the floor and grounded at both ends of the radiator, thereby forming a closed or semi-closed slot or slot. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a bracket conductor with both ends grounded, which can also be called a bracket antenna.

[0137] The feed circuit / feed structure is a combination of all components of an antenna for the purpose of receiving and transmitting radio frequency waves. In the case of a receiving antenna, the feed circuit can be considered as the part of the antenna from the first amplifier to the front-end transmitter. In a transmitting antenna, the feed circuit can be considered as the part after the last power amplifier. In some cases, the "feed circuit" is understood in a narrow sense as the RF chip, or the transmission path from the RF chip to the radiator or the feeding point on the transmission line. The feed circuit has the function of converting radio waves into electrical signals and sending them to the receiver component. Generally, it is considered to be the part of the antenna that converts radio waves into electrical signals and vice versa. The antenna should be designed with maximum power transfer possibility and efficiency in mind. To do this, the antenna feed impedance must be matched with the load resistance. The antenna feed impedance is a combination of resistance, capacitance and inductance. To ensure maximum power transfer conditions, the two impedances (load resistance and feed impedance) should be matched. Matching can be done by considering the frequency requirements and the design parameters of the antenna, such as gain, directivity and radiation efficiency.

[0138] Ground / floor: can refer to at least a part of any grounding layer, grounding plate, or grounding metal layer, etc. in an electronic device (such as a mobile phone), or at least a part of any combination of any of the above grounding layers, grounding plates, or grounding components, etc., and "ground / floor" can be used for grounding components in electronic devices. In one embodiment, "ground / floor" can include any one or more of the following: the grounding layer of the circuit board of the electronic device, the grounding plate formed by the middle frame of the electronic device, or the grounding metal layer formed by the metal film under the screen, the conductive grounding layer of the battery, and the conductive parts or metal parts electrically connected to the above grounding layer / grounding plate / metal layer. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer or 12-14-layer board with 8, 10, 12, 13 or 14 layers of conductive materials, or an element separated and electrically insulated by a dielectric layer or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer and a wiring layer, and the wiring layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. can be mounted on or connected to a circuit board; or electrically connected to a wiring layer and / or a ground layer in the circuit board. For example, a radio frequency source is disposed in the wiring layer.

[0139] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material can be any of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. It will be appreciated by those skilled in the art that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0140] Grounding: refers to coupling with the above-mentioned ground / floor in any way. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding (or physical ground) at a specific position on the frame through some structural parts of the middle frame. In one embodiment, grounding can be achieved through device grounding, such as grounding through devices such as capacitors / inductors / resistors connected in series or in parallel (or device ground).

[0141] Resonant frequency: The resonant frequency is also called the resonance frequency. The resonant frequency can have a frequency range, that is, the frequency range in which resonance occurs. The resonant frequency can be a frequency range in which the return loss characteristic is less than -6dB. The frequency corresponding to the strongest resonance point is the center frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, the antenna / radiator mentioned in this application produces a "first / second... resonance", where the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to the specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0142] Resonant frequency band: The range of the resonant frequency is the resonant frequency band. The return loss characteristic of any frequency point in the resonant frequency band can be less than -6dB or -5dB.

[0143] Communication frequency band / working frequency band: Regardless of the type of antenna, it always works within a certain frequency range (band width). For example, an antenna that supports the B40 frequency band has a working frequency band that includes frequencies in the range of 2300MHz to 2400MHz, or in other words, the working frequency band of the antenna includes the B40 frequency band. The frequency range that meets the index requirements can be regarded as the working frequency band of the antenna. The width of the working frequency band is called the working bandwidth. The working bandwidth of an omnidirectional antenna may reach 3-5% of the center frequency. The working bandwidth of a directional antenna may reach 5-10% of the center frequency. The bandwidth can be considered as a frequency range on both sides of the center frequency (for example, the resonant frequency of a dipole), where the antenna characteristics are within the acceptable value range of the center frequency.

[0144] The resonant frequency band and the operating frequency band may be the same, or may partially overlap. In one embodiment, one or more resonant frequency bands of the antenna may cover one or more operating frequency bands of the antenna.

[0145] Electrical length: Electrical length can be expressed as the ratio of the physical length (i.e. mechanical length or geometric length) multiplied by the transmission time of an electrical or electromagnetic signal in a medium to the time required for the signal to pass the same distance as the physical length of the medium in free space. The electrical length can satisfy the following formula:

[0146]

[0147] Where L is the physical length, a is the transmission time of the electrical or electromagnetic signal in the medium, and b is the transmission time in free space.

[0148] Alternatively, electrical length can also refer to the ratio of physical length (i.e. mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0149]

[0150] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0151] In some embodiments of the present application, the physical length of the radiator may be understood as being within ±20%, or within ±10%, or within ±5% of the electrical length of the radiator.

[0152] In the embodiments of the present application, the wavelength in a certain wavelength mode (such as a half-wavelength mode, etc.) of the antenna may refer to the wavelength of the signal radiated by the antenna. For example, the half-wavelength mode of the suspended metal antenna may generate resonance in the 1.575 GHz frequency band, wherein the wavelength in the half-wavelength mode refers to the wavelength of the signal radiated by the antenna in the 1.575 GHz frequency band.

[0153] Wavelength: or operating wavelength, which can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, then the operating wavelength can be the wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "operating wavelength" can also refer to the wavelength corresponding to the non-center frequency of the resonant frequency or the operating frequency band.

[0154] It should be understood that the wavelength of the radiation signal in the air can be calculated as follows: (wavelength in air, or wavelength in vacuum) = speed of light / frequency, where frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3×108 m / s. The wavelength of the radiation signal in the medium can be calculated as follows: medium wavelength = (speed of light / ) / frequency, where ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application generally refers to the dielectric wavelength, which may be the dielectric wavelength corresponding to the center frequency of the resonant frequency, or the dielectric wavelength corresponding to the center frequency of the working frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, the wavelength may be the dielectric wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "dielectric wavelength" may also refer to the dielectric wavelength corresponding to the non-center frequency of the resonant frequency or the working frequency band. For ease of understanding, the dielectric wavelength mentioned in the embodiments of the present application can be simply calculated by the relative dielectric constant of the medium filled on one or more sides of the radiator.

[0155] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of the antenna radiator cannot be narrowly understood as an end point or end portion that is physically disconnected from other radiators, but can also be considered as a point or a section on a continuous radiator. In one embodiment, the "end / point" may include a connection / coupling area on the antenna radiator that is coupled to other conductive structures. For example, the feed end / feeding point may be a coupling area on the antenna radiator that is coupled to a feed structure or a feed circuit (for example, an area facing a portion of the feed circuit). For another example, the ground end / grounding point may be a connection / coupling area on the antenna radiator that is coupled to a ground structure or a ground circuit.

[0156] Open end, closed end: In some embodiments, the open end and the closed end / grounded end are, for example, relative to whether they are grounded. The closed end is grounded, and the open end is not grounded. In some embodiments, the open end and / or the closed end are, for example, relative to other conductors. The closed end is electrically connected to other conductors, and the open end is not electrically connected to other conductors. In one embodiment, the open end can also be referred to as a suspended end, a free end, an open end, or an open-circuit end. In one embodiment, the closed end can also be referred to as a grounded end, or a short-circuit end. It should be understood that in some embodiments, other conductors can be coupled and connected through the open end to transfer coupling energy (which can be understood as transferring current).

[0157] In some embodiments, the "closed end" can also be understood from the perspective of current distribution. The closed end or the grounded end, etc., can be understood as a point with larger current on the radiator, or as a point with smaller electric field on the radiator. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by coupling electronic devices (for example, capacitors, inductors, etc.) through the closed end. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by opening a gap at or near the closed end (for example, a gap filled with insulating material).

[0158] In some embodiments, the "open end" can also be understood from the perspective of current distribution. The open end or suspended end, etc., can be understood as a point with smaller current on the radiator, or as a point with larger electric field on the radiator. In one embodiment, coupling electronic devices (for example, capacitors, inductors, etc.) through the open end can maintain the current distribution characteristics of the smaller current point / larger electric field point.

[0159] It should be understood that coupling the radiator end at a gap (from the perspective of the structure of the radiator, it is similar to a radiator at an opening of an open end or a suspended end) with electronic devices (for example, capacitors, inductors, etc.) can make the radiator end a point with larger current / smaller electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0160] The limitations on position and distance such as the middle or middle position mentioned in the embodiments of the present application all represent a certain range. For example, the middle (position) of the conductor can refer to a conductor portion including the midpoint on the conductor, or can be a conductor portion of one-eighth of the wavelength including the midpoint of the conductor, wherein the wavelength can be the wavelength corresponding to the working frequency band of the antenna, can be the wavelength corresponding to the center frequency of the working frequency band, or can be the wavelength corresponding to the resonance point. For another example, the middle (position) of the conductor can refer to a conductor portion on the conductor that is less than a predetermined threshold value (for example, 1 mm, 2 mm, or 2.5 mm) from the midpoint. The middle position of the slot or the middle position of one side of the slot refers to the middle position of one side of the slot.

[0161] The limitations such as coplanarity, symmetry (for example, axisymmetry, or center symmetry, etc.), parallelism, and perpendicularity mentioned in the embodiments of the present application are all based on the current technological level, rather than being absolutely strict definitions in a mathematical sense. There may be a deviation less than a predetermined threshold between the edges of two coplanar radiating branches or two antenna units in a direction perpendicular to their coplanar planes. There may be a deviation of a predetermined angle between two antenna units that are parallel or perpendicular to each other. In one embodiment, the predetermined threshold may be less than or equal to a threshold of 1 mm, for example, the predetermined threshold may be 0.5 mm, or may be 0.1 mm. In one embodiment, the predetermined angle may be an angle within the range of ±10°, for example, the predetermined angle deviation is ±5°.

[0162] The current unidirectional / reverse distribution, or unidirectional current / reverse current mentioned in the embodiments of the present application should be understood as the direction of the main current on the conductor on the same side being unidirectional / reverse. For example, when stimulating a unidirectional distributed current on a bent or annular conductor (for example, the current path is also bent or annular), it should be understood that, for example, the main current stimulating on the conductors on both sides of the annular conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) is reversed in direction, but it still belongs to the definition of unidirectional distributed current in the present application. In one embodiment, the unidirectional current on a conductor may refer to the current on the conductor having no reverse point. In one embodiment, the reverse current on a conductor may refer to the current on the conductor having at least one reverse point. In one embodiment, the unidirectional current on two conductors may refer to the current on both conductors having no reverse point and flowing in the same direction. In one embodiment, the reverse current on two conductors may refer to the current on both conductors having no reverse point and flowing in opposite directions. The unidirectional / reverse current on multiple conductors can be understood accordingly.

[0163] The same operating frequency band (also referred to as same frequency) mentioned in the embodiments of the present application can be understood as any one of the following two situations:

[0164] 1) The working frequency band of the first antenna and the working frequency band of the second antenna include the same communication frequency band. In one embodiment, the first antenna and the second antenna are both used as sub-units in the MIMO antenna system. For example, the working frequency band of the first antenna and the working frequency band of the second antenna both include the sub6G frequency band in 5G.

[0165] 2) The operating frequency band of the first antenna and the operating frequency band of the second antenna partially overlap. For example, the operating frequency band of the first antenna includes B35 (1.85-1.91 GHz) in LTE, and the operating frequency band of the second antenna includes B39 (1.88-1.92 GHz) in LTE.

[0166] Antenna return loss: It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the transmit power of the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the greater the radiation efficiency of the antenna. The larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the radiation efficiency of the antenna.

[0167] Antenna return loss can be expressed by the S11 parameter, which is one of the S parameters. S11 represents the reflection coefficient, which can characterize the quality of the antenna transmission efficiency.

[0168] In one embodiment, the S11 diagram can be understood as a schematic diagram for representing the resonance generated by the antenna. In one embodiment, the resonance shown in the S11 diagram in the portion less than -6dB can be understood as the resonant frequency / frequency range / operating frequency band generated by the antenna. The S11 parameter is usually a negative number. The smaller the S11 parameter is, the smaller the antenna return loss is, and the smaller the energy reflected back by the antenna itself is, which means that more energy actually enters the antenna and the higher the system efficiency of the antenna is; the larger the S11 parameter is, the greater the antenna return loss is, and the lower the system efficiency of the antenna is.

[0169] It should be noted that in engineering, the S11 value is generally -6dB as the standard. When the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or that the antenna has good transmission efficiency.

[0170] Isolation: refers to the ratio of the signal received by another antenna when an antenna transmits a signal to the signal of the transmitting antenna. Isolation is a physical quantity used to measure the degree of mutual coupling between antennas. Assuming that two antennas form a two-port network, the isolation between the two antennas is the S21 and S12 between the antennas. Antenna isolation can be represented by the S21 and S12 parameters, which are also a type of S parameters. The S21 and S12 parameters are usually negative numbers. The smaller the S21 and S12 parameters are, the greater the isolation between the antennas and the smaller the mutual coupling between the antennas; the larger the S21 and S12 parameters are, the smaller the isolation between the antennas and the greater the mutual coupling between the antennas. The isolation of the antenna depends on the antenna radiation pattern, the spatial distance between the antennas, the antenna gain, etc.

[0171] The Envelope Correlation Coefficient (ECC) indicates the degree of independence of the radiation patterns of two antennas. If one antenna is completely horizontally polarized and the other is completely vertically polarized, the correlation between the two antennas is essentially zero. Similarly, if one antenna radiates energy only to the sky and the other only to the ground, the ECC of these antennas is also essentially zero. Therefore, the envelope correlation coefficient takes into account the shape of the antenna's radiation pattern, polarization, and even the relative phase of the field between the two antennas. ECC generally characterizes the relationship between two antennas. For MIMO antenna systems, multiple groups of ECC can be used to characterize the independence between antennas. For example, a MIMO antenna with an ECC below 0.5 can work "relatively well".

[0172] Ground state: corresponds to a section of a radiator, or a radiator in a certain antenna mode, the resonance with the lowest frequency. Among them, "ground state position" or "ground state resonant frequency" refers to the frequency range or resonant frequency corresponding to the ground state of the radiator in a specific antenna mode (for example, the resonance with the lowest frequency). "Ground state" can also be called "fundamental mode". Corresponding to the "ground state" are "higher order" or "higher-order mode / higher-order mode", or it can also be called "frequency doubling" (for example, triple frequency, quintupling frequency). Unless otherwise specified, the "resonance" in the embodiments of the present application refers to the resonance in the ground state, or the resonance generated by the fundamental mode. In the embodiments of the present application, "the higher-order mode corresponding to the first resonance" should be understood as at least one higher-order mode generated by the antenna mode corresponding to the first resonance.

[0173] The technical solution provided in the embodiment of the present application is applicable to electronic devices using one or more of the following communication technologies: Bluetooth (BT) communication technology, global positioning system (GPS) communication technology, wireless fidelity (WiFi) communication technology, global system for mobile communications (GSM) communication technology, wideband code division multiple access (WCDMA) communication technology, long term evolution (LTE) communication technology, 5G communication technology and other future communication technologies. The communication device in the embodiment of the present application can be a telematics processor (T-BOX), a router, a mobile phone, a tablet computer, a customer premises equipment (CPE), a smart bracelet, a smart watch, a smart helmet, smart glasses, etc. The communication device can also be a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, an electronic device in a 5G network or an electronic device in a public land mobile communication network (PLMN) in the future evolution, etc., and the embodiment of the present application is not limited to this.

[0174] The embodiment of the present application provides an antenna assembly, which can be applied to a communication device to transmit and receive signals through the antenna assembly. Exemplarily, the communication device may include a housing, the housing is configured to form an installation cavity, the antenna assembly may be disposed in the housing, and the housing may be used to fix and seal the antenna assembly.

[0175] In an implementation in which the communication device includes a telematics processor, the telematics processor is disposed on a vehicle. Exemplarily, the vehicle includes a vehicle body, which encloses a driver's cab and a passenger cabin, and the telematics processor may be disposed in the driver's cab; alternatively, a rear window is disposed on the vehicle body at the rear of the passenger cabin, and a rear spoiler is disposed on the upper portion of the rear window, and the telematics processor may also be disposed on the rear spoiler. The rear spoiler is located outside the vehicle body. The telematics processor is disposed on the rear spoiler, which can avoid signal blocking by the metal vehicle body, thereby improving communication quality.

[0176] In the above implementation, the vehicle also includes an on-board host, which is electrically connected to a telematics processor. The on-board host can communicate with user terminals, satellites, communication base stations and other devices through the telematics processor. The on-board host can also locate and navigate the vehicle through the telematics processor.

[0177] Please refer to Figure 1 The antenna assembly in the embodiment of the present application includes a first radiator 10 and a second radiator 20, the first radiator 10 and the second radiator 20 are arranged at an interval, and the first radiator 10 and the second radiator 20 are conductive bodies. For example, the material of the first radiator 10 and the second radiator 20 may include metals such as stainless steel, copper, and aluminum. Of course, the material of the first radiator 10 and the second radiator 20 may also include other non-metallic conductive materials. The embodiment of the present application does not limit the material of the first radiator 10 and the second radiator 20, as long as the first radiator 10 and the second radiator 20 can be conductive. It can be understood that the material of the first radiator 10 and the second radiator 20 can be the same or different.

[0178] The embodiment of the present application does not limit the shapes of the first radiator 10 and the second radiator 20. For example, the first radiator 10 and the second radiator 20 can be in regular shapes such as plate, column, strip, etc., and the following will be introduced by taking the first radiator 10 and the second radiator 20 as an example of being plate-shaped; of course, the first radiator 10 and the second radiator 20 can also be in other irregular shapes, and the shapes of the first radiator 10 and the second radiator 20 can be the same or different. It is understandable that the plate in the embodiment of the present application can be a sheet whose thickness is less than the width and length.

[0179] The first radiator 10 and the second radiator 20 may be located in the same plane, or they may be located in different planes. In the implementation mode where the first radiator 10 and the second radiator 20 are located in the same plane, the extension direction of the first radiator 10 is the same as the extension direction of the second radiator 20 (the first radiator 10 and the second radiator 20 are both along the same plane). Figure 1 extending in the horizontal direction); along the direction perpendicular to the extending direction ( Figure 1 In the vertical direction, there is a gap between the first radiator 10 and the second radiator 20, so that the first radiator 10 and the second radiator 20 are arranged at an interval.

[0180] Continue to refer to Figure 1In the embodiment of the present application, the antenna assembly further includes a conductive bridge 30, which is disposed between the first radiator 10 and the second radiator 20. The first end of the conductive bridge 30 close to the first radiator 10 is coupled to the first radiator 10, and the second end of the conductive bridge 30 close to the second radiator 20 is coupled to the second radiator 20. The connection between the first radiator 10 and the second radiator 20 can be achieved through the conductive bridge 30. Exemplarily, the material of the conductive bridge 30 can be the same as that of the first radiator 10 and the second radiator 20. Of course, the material of the conductive bridge 30 can also be different from that of the first radiator 10 and the second radiator 20. The embodiment of the present application does not limit the material of the conductive bridge 30.

[0181] The first feeding end 204 and the second feeding end 205 are arranged at intervals on the second radiator 20. For example, the first feeding end 204 and the second feeding end 205 can be arranged on the side of the second radiator 20 away from the first radiator 10. Of course, the first feeding end 204 and the second feeding end 205 can also be arranged on the side of the second radiator 20 close to the first radiator 10, which is not limited in the embodiment of the present application. The first feeding end 204 and the second feeding end 205 can be arranged at intervals substantially along the extension direction of the second radiator 20.

[0182] The first feeding terminal 204 and the second feeding terminal 205 are used to receive the feed signal. Exemplarily, the first feeding terminal 204 and the second feeding terminal 205 can be electrically connected to the transceiver, and the transceiver can transmit signals to the first radiator 10 and the second radiator 20 through the first feeding terminal 204 and the second feeding terminal 205. Of course, the transceiver can also receive signals from the first radiator 10 and the second radiator 20 through the first feeding terminal 204 and the second feeding terminal 205 to realize signal sending and receiving.

[0183] It is understandable that the first feed end 204 and the second feed end 205 can receive signals from different feed sources (such as transceivers), and the first feed end 204 and the second feed end 205 correspond to different RF channels. Exemplarily, the first feed end 204 and the second feed end 205 can be coupled to different matching circuits, respectively.

[0184] In the embodiment of the present application, the first radiator 10 has a first open end and a second open end, the first open end and the second open end of the first radiator 10 can be arranged opposite to each other, and the conductive bridge 30 is coupled to the first radiator 10 between the first open end of the first radiator 10 and the second open end of the first radiator 10. Similarly, the second radiator 20 also has a first open end and a second open end, the first open end and the second open end of the second radiator 20 can be arranged opposite to each other, and the conductive bridge 30 is coupled to the second radiator 20 between the first open end of the second radiator 20 and the second open end of the second radiator 20. The first feeding end 204 and the second feeding end 205 can be located between the first open end and the second open end of the second radiator 20.

[0185] In the above implementation, the conductive bridge 30 realizes the electrical connection between the first radiator 10 and the second radiator 20. Accordingly, the antenna assembly includes the first antenna 100 and the second antenna 200. The first antenna 100 includes the first feeding terminal 204, the first radiator 10, the conductive bridge 30 and the second radiator 20. The second antenna 200 includes the second feeding terminal 205, the first radiator 10, the conductive bridge 30 and the second radiator 20. Among them, the working frequency bands of the first antenna 100 and the second antenna 200 can also include the same frequency band, that is, the working frequency bands of the first antenna 100 and the second antenna 200 overlap. In one embodiment, the bandwidth of the antenna assembly can be expanded; on the other hand, when the working frequency bands of the first antenna 100 and the second antenna 200 are the same frequency band, the first antenna 100 and the second antenna 200 can also simultaneously send or receive signals carrying different information (that is, the antenna assembly is a multiple-input multiple-output system (multiple-input multiple-output referred to as MIMO antenna) to improve the channel capacity.

[0186] It is understandable that the first antenna 100 and the second antenna 200 can work simultaneously or separately, that is, the first feeding terminal 204 and the second feeding terminal 205 can be fed with signals at the same time, and of course the first feeding terminal 204 or the second feeding terminal 205 can also be fed with signals. When the signal is fed to the first feeding terminal 204 or the second feeding terminal 205, the first antenna 100 and the second antenna 200 simultaneously excite the differential mode current and the common mode current, and the first antenna 100 and the second antenna 200 can be decoupled by superposition of the differential mode current and the common mode current. The above decoupling mode applies the mode cancellation method (modecancel method, abbreviated as MCM).

[0187] Please refer to Figure 2Exemplarily, when a signal is fed into the first feeding terminal 204, the first antenna 100 and the second antenna 200 simultaneously excite differential mode current and common mode current, and the differential mode current and the common mode current are in the same direction at the first feeding terminal 204, and are retained after the two are superimposed; the differential mode current and the common mode current are in opposite directions and are approximately equal in magnitude at the second feeding terminal 205, and after the two are superimposed, the current at the second feeding terminal 205 is zero or close to zero, thereby eliminating or reducing the interference between the first antenna 100 and the second antenna 200, improving the isolation between the first antenna 100 and the second antenna 200, and realizing the decoupling of the first antenna 100 and the second antenna 200.

[0188] For similar reference, see Figure 3 When a signal is fed into the second feeding terminal 205, the first antenna 100 and the second antenna 200 simultaneously excite differential mode current and common mode current, and the differential mode current and the common mode current have the same direction at the second feeding terminal 205, and are retained after the two are superimposed; the differential mode current and the common mode current are opposite in direction and approximately equal in magnitude at the first feeding terminal 204, and after the two are superimposed, the current at the first feeding terminal 204 is zero or close to zero, thereby eliminating or reducing the interference between the first antenna 100 and the second antenna 200, improving the isolation between the first antenna 100 and the second antenna 200, and realizing the decoupling of the first antenna 100 and the second antenna 200.

[0189] Because, when a signal is fed into the first feeding terminal 204 or the second feeding terminal 205, the first antenna 100 and the second antenna 200 simultaneously excite differential mode current and common mode current, and the decoupling of the first antenna 100 and the second antenna 200, that is, the self-decoupling of the antenna assembly, can be achieved through the superposition of the differential mode current and the common mode current; therefore, when the first antenna 100 works alone, it will not be interfered by the second antenna 200; when the second antenna 200 works alone, it will not be interfered by the first antenna 100; when the first antenna 100 and the second antenna 200 work simultaneously, the first antenna 100 and the second antenna 200 will not interfere with each other.

[0190] Please refer to Figure 4In the embodiment of the present application, the communication device may include a transceiver 110, a first switch device 120, a second switch device 130, a third switch device 140, a fourth switch device 150, a first combiner 160, and a second combiner 170. The transceiver 110 may include a first transceiver port 111, a second transceiver port 112, a third transceiver port 113, and a fourth transceiver port 114. The first transceiver port 111 is connected to the first combiner 160 through the first switch device 120, the second switch device 130 is connected to the first combiner 160 through the second switch device 130, and the first combiner 160 is connected to the first feeding terminal 204. The signal frequencies corresponding to the first transceiver port 111 and the second transceiver port 112 may be different. For example, the first transceiver port 111 may receive and transmit signals in a first working frequency band, and the second transceiver port 112 may receive and transmit signals in a second working frequency band, and the second working frequency band is higher than the first working frequency band. Through the first switch device 120, the second switch device 130 and the first combiner 160, the first transceiver port 111 and the second transceiver port 112 can transmit signals to the first feeding end 204 simultaneously or at different times, or the first transceiver port 111 and the second transceiver port 112 can receive signals from the first feeding end 204 simultaneously or at different times.

[0191] Similarly, the signal frequencies corresponding to the third transceiver port 113 and the fourth transceiver port 114 may be different. For example, the third transceiver port 113 may receive and transmit signals in the first working frequency band, and the fourth transceiver port 114 may receive and transmit signals in the second working frequency band. Through the third switch device 140, the fourth switch device 150 and the second combiner 170, the third transceiver port 113 and the fourth transceiver port 114 may transmit signals to the second feeder 205 at the same time or at different times, or the third transceiver port 113 and the fourth transceiver port 114 may receive signals from the second feeder 205 at the same time or at different times. In addition, the first feeder 204 and the second feeder 205 may also receive feed signals at the same time or at different times, or the first feeder 204 and the second feeder 205 may send signals to the corresponding combiner at the same time or at different times.

[0192] Due to the self-decoupling of the antenna assembly, in the above process, the first antenna 100 and the second antenna 200 will not interfere with each other, thereby improving the isolation of the antenna assembly and also improving the performance of the antenna assembly.

[0193] Continue to refer to Figure 1In the embodiment of the present application, the first feeding terminal 204 and the second feeding terminal 205 can both be parts of the second radiator 20, and accordingly, the first feeding terminal 204 and the second feeding terminal 205 corresponding to the parts of the second radiator 20 are arranged at intervals; of course, the first feeding terminal 204 may also include a first protrusion arranged on the second radiator 20, and the second feeding terminal 205 includes a second protrusion arranged on the second radiator 20, and the first protrusion and the second protrusion are arranged at intervals.

[0194] Please refer to Figure 5a In some embodiments, the first feeding end 204 includes a first feeding branch 2041 disposed on the second radiator 20, and the second feeding end 205 includes a second feeding branch 2051 disposed on the second radiator 20. The first feeding branch 2041 and the second feeding branch 2051 extend in a direction away from the second radiator 20, and the current path length on the first antenna 100 and the second antenna 200 can be adjusted; in addition, since the first feeding branch 2041 and the second branch have a certain impedance, the impedance matching of the first antenna 100 and the second antenna 200 can be achieved through the first feeding branch 2041 and the second feeding branch 2051.

[0195] It can be understood that, by reasonably setting the extension length of the first feeding branch node 2041 and / or the width of the first feeding branch node 2041 along the direction perpendicular to the extension, the impedance of the first feeding branch node 2041 can be adjusted to achieve impedance matching of the first antenna 100; similarly, by reasonably setting the extension length of the second feeding branch node 2051 and / or the width of the second feeding branch node 2051 along the direction perpendicular to the extension, the impedance of the second feeding branch node 2051 can be adjusted to achieve impedance matching of the second antenna 200.

[0196] In some implementations, the antenna assembly may further include a second inductor structure, one end of which is coupled to the first feed branch 2041, and the other end of which is grounded. The second inductor structure facilitates the grounding of the current in the first antenna 100, and the impedance matching of the first antenna 100 can be achieved by reasonably setting the inductance value of the second inductor structure. Similarly, the antenna assembly may further include a third inductor structure, one end of which is coupled to the second feed branch 2051, and the other end of which is grounded. The third inductor structure facilitates the grounding of the current in the second antenna 200, and the impedance matching of the second antenna 200 can be achieved by reasonably setting the inductance value of the third inductor structure.

[0197] Exemplarily, the communication device may include a floor, and the other end of the second inductor structure may be coupled to the floor to achieve grounding of the second inductor structure. Similarly, the other end of the third inductor structure may also be coupled to the floor to achieve grounding of the third inductor structure. The floor may be disposed on a PCB board of the communication device, and of course the floor may also be other grounded and conductive boards.

[0198] In the embodiment of the present application, the second inductance structure and the third inductance structure may include an inductor. Of course, the second inductance structure and the third inductance structure may also include a structure with a certain impedance such as a conductor with a certain length. The embodiment of the present application does not limit the second inductance structure and the third inductance structure. It can be understood that the second inductance structure and the third inductance structure may be arranged on a PCB board. Of course, the second inductance structure and the third inductance structure may not be arranged on a PCB board. The embodiment of the present application does not limit the position of the second inductance structure and the third inductance structure.

[0199] In the antenna assembly provided by the embodiment of the present application, a first radiator 10 and a second radiator 20 are arranged at intervals, a first feeding terminal 204 and a second feeding terminal 205 are arranged at intervals on the second radiator 20, a conductive bridge 30 is arranged between the first radiator 10 and the second radiator 20, one end of the conductive bridge 30 is coupled and connected to the first radiator 10, and the other end of the conductive bridge 30 is coupled and connected to the second radiator 20; so that the antenna assembly includes a first antenna 100 and a second antenna 200, the working frequency bands of the first antenna 100 and the second antenna 200 include the same frequency band, the first antenna 100 includes a first feeding terminal 204, a first radiator 10, a conductive bridge 30, and a second radiator 20, and the second antenna 200 includes a second feeding terminal 205, a first radiator 10, a conductive bridge 30, and a second radiator 20. When the antenna assembly is fed through the first feeding terminal 204 and the second feeding terminal 205, the first antenna 100 and the second antenna 200 both operate in the same frequency band, and there is a high degree of isolation between the first antenna 100 and the second antenna 200, thereby achieving decoupling of the first antenna 100 and the second antenna 200.

[0200] In addition, in the embodiment of the present application, the first antenna 100 and the second antenna 200 share the first radiator 10 and the second radiator 20, which can reduce the space occupied by the antenna assembly (such as reducing the space by about 50%), and facilitate miniaturization of the antenna assembly. Since the first antenna 100 and the second antenna 200 share the first radiator 10 and the second radiator 20, the production cost of the antenna assembly can also be reduced (such as reducing the cost by about 50%).

[0201] In an embodiment of the present application, the antenna assembly may have multiple decoupling modes, each decoupling mode corresponds to a different operating frequency band, so that the antenna assembly can operate in different operating frequency bands, thereby improving the bandwidth of the antenna assembly. The decoupling mode refers to the operating mode of the antenna assembly. For example, when the first antenna 100 and the second antenna 200 operate in the same frequency band, the first antenna 100 generates resonance in the frequency band, and the second antenna 200 generates resonance in the frequency band. The first antenna 100 and the second antenna 200 respectively generate resonances in the same frequency band. The respective antenna modes of the resonances in the same frequency band are decoupled, and the isolation is high. The resonant frequencies of the first antenna 100 and the second antenna 200 are within the operating frequency band.

[0202] In some implementations, the antenna assembly includes a first decoupling mode and a second decoupling mode, and accordingly, the operating frequency band of the antenna assembly includes a first operating frequency band and a second operating frequency band, the first decoupling mode corresponds to the first operating frequency band, and the second decoupling mode corresponds to the second operating frequency band. In one embodiment, the first operating frequency band is different from the second operating frequency band. In one embodiment, the center frequency f1 of the first operating frequency band is less than the center frequency f2 of the second operating frequency band. In one embodiment, the center frequency f1 of the first operating frequency band is greater than the center frequency f2 of the second operating frequency band. With such a configuration, the antenna assembly can operate in the first operating frequency band and the second operating frequency band, so that the antenna assembly has a larger bandwidth.

[0203] In some embodiments, the antenna assembly further includes a third decoupling mode, and accordingly, the operating frequency band of the first antenna 100 and the operating frequency band of the second antenna 200 further include a third operating frequency band, and the center frequency of the third operating frequency band is greater than the center frequency f1 of the first operating frequency band and the center frequency of the second operating frequency band. In this way, the bandwidth covered by the antenna assembly can be further increased.

[0204] The embodiment of the present application does not limit the first working frequency band, the second working frequency band and the third working frequency band. For example, the antenna assembly can be used for wireless network communication (Wi-Fi). Accordingly, a wireless local area network (WLAN) can be established through the antenna assembly to realize wireless communication between the communication device and other devices. The first working frequency band can be a 2.4 GHz frequency band (such as 2.4 GHz-2.4835 GHz), the second working frequency band can be a 5 GHz frequency band (such as 5.15 GHz-5.85 GHz), and the third working frequency band can be a 6 GHz frequency band (such as 5.925 GHz-7.125 GHz), so that the antenna assembly can cover various frequency bands of the WLAN, thereby improving the use bandwidth and adaptation performance of the antenna assembly and the communication device.

[0205] In the implementation method in which the antenna assembly also includes a third decoupling mode, the ratio between the second working frequency band and the first working frequency band can be 1.68-2.8 (such as 1.68, 2, 2.5, 2.8, etc.), which can make the second working frequency band and the third working frequency band close to each other, thereby forming a broadband working frequency band. "The ratio between the second working frequency band and the first working frequency band can be 1.68-2.8" can be understood as: in one embodiment, the center frequency of the second working frequency band is greater than the center frequency of the first working frequency band, and the frequency ratio of the center frequency of the second working frequency band to the center frequency of the first working frequency band is 1.68-2.8 (such as 1.68, 2, 2.5, 2.8, etc.); or, in one embodiment, the center frequency of the second working frequency band is less than the center frequency of the first working frequency band, and the frequency ratio of the center frequency of the first working frequency band to the center frequency of the second working frequency band is 1.68-2.8 (such as 1.68, 2, 2.5, 2.8, etc.).

[0206] It is understandable that the embodiment of the present application does not limit the relationship between the length of the first radiator and the length of the second radiator. Figure 1 As shown, the length of the first radiator 10 may be greater than the length of the second radiator 20; Figure 5b As shown, the length of the first radiator 10 may be smaller than the length of the second radiator 20. The lengths of the first radiator 10 and the second radiator 20 may be reasonably set according to the working frequency band of the antenna assembly.

[0207] In the embodiment of the present application, the structures of the first radiator 10 and the second radiator 20 can be various, which will be introduced in multiple scenarios below:

[0208] Scene 1

[0209] Continue to refer to Figure 1 In this scenario, the first radiator 10 and the second radiator 20 can both be plate-shaped, the first radiator 10 and the second radiator 20 are located in the same plane, and the first radiator 10 and the second radiator 20 have the same extension direction, that is, the long sides of the first radiator 10 and the second radiator 20 are arranged in parallel.

[0210] Fig.10It is an S parameter curve diagram of the antenna component, in which curve S11 is the reflection coefficient curve, S21 is the transmission coefficient curve, S12 and S22 are the scattering coefficient curves. It can be seen from curve S12 that the S parameter between point 1 and point 2 is less than or equal to -16dB, the S parameter between point 3 and point 4 is less than or equal to -15dB, and the S parameter between point 5 and point 6 is less than or equal to -13.5dB. Therefore, the first operating frequency band is the 2.4GHz band (such as the center frequency of 2.4GHz-2.4835GHz), the second operating frequency band is the 5GHz band (such as the center frequency of 5.15GHz-5.85GHz), and the third operating frequency band is the 6GHz band (such as the center frequency of 5.925GHz-7.125GHz). It can be seen that the operating frequency band of the antenna component covers all frequency bands of WLAN.

[0211] In some embodiments, the 2.4 GHz frequency band may refer to a frequency band of 2.4 GHz to 2.4835 GHz. In some embodiments, the 5 GHz frequency band may refer to a frequency band of 5.15 GHz to 5.85 GHz. In some embodiments, the 6 GHz frequency band may refer to a frequency band of 5.925 GHz to 7.125 GHz.

[0212] Continue to refer to Figure 1 In some implementations, the length L1 (dimension along the extension direction) of the first radiator 10 may be greater than the length L2 (dimension along the extension direction) of the second radiator 20, and the ratio of the length L2 of the second radiator 20 to the length L1 of the first radiator 10 may be 0.46-0.66 (such as 0.46, 0.5, 0.66, etc.); in some implementations, the length L1 (dimension along the extension direction) of the first radiator 10 may be less than the length L2 (dimension along the extension direction) of the second radiator 20, and the ratio of the length L1 of the first radiator 10 to the length L2 of the second radiator 20 may be 0.46-0.66 (such as 0.46, 0.5, 0.66, etc.). In this way, the second working frequency band can be close to the third working frequency band, thereby forming a broadband working frequency band. Exemplarily, the length L1 of the first radiator 10 may be 40 mm-50 mm (such as 40 mm, 45 mm, 50 mm, etc.), and the length L2 of the second radiator 20 may be 18 mm-30 mm (such as 18 mm, 24 mm, 30 mm, etc.). When the length L1 of the first radiator 10 is 45 mm, it is 0.36 times the wavelength corresponding to the 2.4 GHz frequency (125 mm), and its length is less than half the length of the wavelength, so that the length L1 of the first radiator 10 is small, which reduces the occupied space of the antenna assembly and facilitates the miniaturization of the antenna assembly.

[0213] Fig.11is the S21 curve corresponding to different lengths of the second radiator 20 when the length of the first radiator 10 is 45 mm, Fig.11 It can be seen that when the length of the second radiator 20 is 24 mm, the second working frequency band and the third working frequency band are closest to each other, thereby forming a broadband working frequency band.

[0214] In other implementations, the length of the first radiator 10 may also be less than or equal to the length of the second radiator 20. This scenario does not limit the length relationship between the first radiator 10 and the second radiator 20, as long as the first radiator 10 and the second radiator 20 have sufficient lengths to meet the current distribution requirements on the first antenna 100 and the second antenna 200.

[0215] Continue to refer to Figure 1 In this scenario, the width D2 (dimension perpendicular to the extension direction) of the second radiator 20 is 1 / 3-3 times the width D1 (dimension perpendicular to the extension direction) of the first radiator 10, such as the width D2 of the second radiator 20 is 0.5-2 times the width D1 of the first radiator 10. Exemplarily, the width D1 of the first radiator 10 may be 2 mm-5 mm (such as 2 mm, 3 mm, 5 mm, etc.), and the width D2 of the second radiator 20 may be 3 mm-8 mm (such as 3 mm, 5.5 mm, 8 mm, etc.).

[0216] It is understandable that the first radiator 10 and the second radiator 20 need to have a certain width to prevent the first radiator 10 and the second radiator 20 from having too large impedance. For example, the width D1 of the first radiator 10 and the width D2 of the second radiator 20 need to be greater than or equal to 1 mm. Through the above configuration, the widths of the first radiator 10 and the second radiator 20 can be reduced while preventing the first radiator 10 and the second radiator 20 from having too large impedance, and the volume of the antenna assembly can be reduced, so as to facilitate the miniaturization of the antenna assembly.

[0217] In this scenario, the length L3 of the conductive bridge 30 along the extension direction of the second radiator 20 is 0.05-0.25 times the length L1 of the first radiator 10. Exemplarily, when the length L1 of the first radiator 10 is 45 mm, the length L3 of the conductive bridge 30 can be 2.25 mm-11.25 mm (such as 2.25 mm, 7 mm, 11.25 mm, etc.). It can be understood that in the implementation mode in which the conductive bridge 30 includes the first conductive bridge 301 and the second conductive bridge 302, the length L3 of the conductive bridge 30 along the extension direction of the second radiator 20 is the sum of the length of the first conductive bridge 301 along the extension direction of the first radiator 10, the length of the second conductive bridge 302 along the extension direction of the first radiator 10, and the distance between the first conductive bridge 301 and the second conductive bridge 302.

[0218] like Fig.12 is a curve diagram of the antenna assembly S21 corresponding to different lengths of the conductive bridge 30, Fig.12 It can be seen that: if the length of the conductive bridge 30 is too small, it is easy to cause the impedance of the conductive bridge 30 to be too large, thereby causing the first working frequency band, the second working frequency band and the third working frequency band to shift to low frequency; if the length of the conductive bridge 30 is too large, it is easy to cause the impedance of the conductive bridge 30 to be too small, thereby causing the first working frequency band, the second working frequency band and the third working frequency band to shift to high frequency. By making the length of the conductive bridge 30 2.25mm-11.25mm (such as 7mm), the first working frequency band can be 2.4GHz band (such as frequency band 2.4GHz-2.4835GHz), the second working frequency band can be 5GHz band (such as frequency band 5.15GHz-5.85GHz), and the third working frequency band can be 6GHz band (such as frequency band 5.925GHz-7.125GHz), so that the antenna assembly can cover various frequency bands of WLAN.

[0219] Continue to refer to Figure 1 In some implementations, the first feeding terminal 204 and the second feeding terminal 205 are spaced apart along the extension direction of the second radiator 20, and the distance L4 between the first feeding terminal 204 and the second feeding terminal 205 is about 0.25-0.5 times the length L2 of the second radiator 20, for example, the distance L4 between the first feeding terminal 204 and the second feeding terminal 205 is about 1 / 3 of the length L2 of the second radiator 20 (the distance L4 between the first feeding terminal 204 and the second feeding terminal 205 is 1 / 3±3 mm of the length of the second radiator 20).

[0220] Exemplarily, the distance L4 between the first feeding terminal 204 and the second feeding terminal 205 can be 6 mm-12 mm (such as 6 mm, 10 mm, 12 mm, etc.). It can be understood that by reasonably setting the distance between the first feeding terminal 204 and the second feeding terminal 205, and the length of the conductive bridge 30, the current length of the first antenna 100 and the second antenna 200 can be adjusted so that the first antenna 100 and the second antenna 200 can meet the requirements of each decoupling mode.

[0221] In this scenario, the conductive bridge 30 is located in the middle of the first radiator 10 along the extension direction, and the conductive bridge 30 is also located in the middle of the second radiator 20 along the extension direction. That is to say, the conductive bridge 30, the first radiator 10 and the second radiator 20 are all axisymmetric structures, and the symmetry axis ( Figure 1The thin dot-dash line in FIG. 2 is a straight line perpendicular to the extension direction of the first radiator 10. The first feeding terminal 204 and the second feeding terminal 205 are equidistant from the symmetry axis, and the first feeding terminal 204 is located on one side (right side) of the symmetry axis, and the second feeding terminal 205 is located on the other side (left side) of the symmetry axis. The projection of the conductive bridge 30 on the second radiator 20 may be located between the first feeding terminal 204 and the second feeding terminal 205.

[0222] Exemplarily, along the extension direction of the first radiator 10, the difference in length of the part of the first radiator 10 on both sides of the conductive bridge 30 is less than or equal to 0.1 times the length of the first radiator 10; along the extension direction of the second radiator 20, the difference in length of the part of the second radiator 20 on both sides of the conductive bridge 30 is less than or equal to 0.1 times the length of the second radiator 20. In this way, the antenna assembly is an axisymmetric structure relative to the symmetry axis, and thus the first antenna 100 and the second antenna 200 have the same structure and size.

[0223] In some embodiments, the difference between the distance between the first feeding terminal 204 and the conductive bridge 30 and the distance between the second feeding terminal 205 and the conductive bridge 30 is less than or equal to 0.1 times the length of the conductive bridge 30 along the extension direction of the first radiator 10. This makes the distances between the first feeding terminal 204 and the second feeding terminal 205 and the conductive bridge 30 equal, thereby improving the symmetry of the antenna assembly. It can be understood that the distance between the first feeding terminal 204 and the conductive bridge 30 is the shortest distance between the first feeding terminal 204 and the conductive bridge 30; similarly, the distance between the second feeding terminal 205 and the conductive bridge 30 is the shortest distance between the second feeding terminal 205 and the conductive bridge 30.

[0224] In an implementation in which the conductive bridge 30 includes a first conductive bridge 301 and a second conductive bridge 302 that are spaced apart, the difference in length between the first conductive bridge 301 and the second conductive bridge 302 along the extension direction of the first radiator 10 is less than 1 mm, so that the sizes of the first conductive bridge 301 and the second conductive bridge 302 are roughly equal, further improving the symmetry of the antenna assembly.

[0225] like Figure 5aAs shown, in the implementation mode where the first feed end 204 includes a first feed branch 2041 and the second feed end 205 includes a second feed branch 2051, the first feed branch 2041 and the second feed branch 2051 can be arranged on the side of the second radiator 20 away from the first radiator 10, and the length L5 of the first feed branch 2041 and the second feed branch 2051 along the extension direction parallel to the second radiator 20 can be 0.5mm-3mm (such as 0.5mm, 1mm, 3mm, etc.). Reasonable setting of the length and width (the dimension along the extension direction perpendicular to the second radiating branch 102) of the first feed branch 2041 and the second feed branch 2051 can facilitate impedance matching of the first antenna 100 and the second antenna 200 while adjusting the electrical length of the first antenna 100 and the second antenna 200.

[0226] Continue to refer to Figure 1 and Figure 5a In this scenario, the first radiator 10 may include a first radiating branch 101 located on one side of the conductive bridge 30, and a second radiating branch 102 located on the other side of the conductive bridge 30, and the conductive bridge 30 is coupled to the first radiating branch 101 and the second radiating branch 102. The first radiating branch 101 may be arranged close to the first feeding terminal 204, and the second radiating branch 102 may be arranged close to the second feeding terminal 205; accordingly, the first antenna 100 includes the first feeding terminal 204, the second radiator 20, the conductive bridge 30, and the first radiating branch 101, and the second antenna 200 includes the second feeding terminal 205, the second radiator 20, the conductive bridge 30, and the second radiating branch 102.

[0227] It is understandable that if Figure 1 One side of the conductive bridge 30 shown may be the center line of the conductive bridge 30 along the extension direction of the first radiator 10 ( Figure 1 Correspondingly, the other side of the conductive bridge 30 is the left side of the center line of the conductive bridge 30. The first radiation branch 101 is the part of the first radiator 10 on the right side of the center line, and the second radiator 20 is the part of the first radiator 10 on the left side of the center line.

[0228] In the above implementation, the end of the first radiation branch 101 close to the second radiation branch 102 is connected to the end of the second radiation branch 102 close to the first radiation branch 101; illustratively, the first radiator 10 also includes a connecting branch, which is arranged between the end of the first radiation branch 101 close to the second radiation branch 102 and the end of the second radiation branch 102 close to the first radiation branch 101, and the connection between the first radiation branch 101 and the second radiation branch 102 is achieved through the connecting branch. Through the above arrangement, the impedance between the conductive bridge 30 and the first radiation branch 101, and the impedance between the conductive bridge 30 and the second radiation branch 102 can be reduced.

[0229] In one embodiment, the connecting branch, the first radiating branch 101 and the second radiating branch 102 may be an integrated structure to simplify the manufacturing difficulty of the antenna assembly. In one embodiment, the integrated structure may be understood as a structure implemented in the same process. When the connecting branch, the first radiating branch 101 and the second radiating branch 102 are an integrated structure, the connecting branch may be regarded as the first radiator 10 on the above-mentioned midline ( Figure 1 For example, in Figure 1 In the embodiment shown, in the extension direction of the midline, the portion where the first radiator 10 overlaps (can also be understood as connected) with the conductive bridge can be regarded as a connecting branch; the portion of the first radiator on the right side of the connecting branch is the first radiating branch 101; the portion of the first radiator on the left side of the connecting branch is the second radiating branch 102. Figure 5a In the illustrated embodiment, in the extension direction of the midline, the portion of the first radiator 10 that does not overlap with the conductive bridge at the midline (can also be understood as not connected) can be regarded as a connecting branch; the portion of the first radiator on the right side of the connecting branch is the first radiating branch 101; the portion of the first radiator on the left side of the connecting branch is the second radiating branch 102.

[0230] In one embodiment, any two or more of the connecting branch, the first radiation branch 101, the second radiation branch 102, the conductive bridge 30, the second radiator 20, the first feeding end 204 and the second feeding end 205 may be an integrated structure. Figure 5a As shown, the present application uses rectangles to simply illustrate the division of the above-mentioned parts. It should be understood that the rectangular division should not be regarded as a clear connection between the two.

[0231] Please refer to Fig.13 In some implementations, the conductive bridge 30 includes a first conductive bridge 301 and a second conductive bridge 302 which are arranged at intervals, the first end of the first conductive bridge 301 and the first end of the second conductive bridge 302 are coupled to the second radiator 20, the second end of the first conductive bridge 301 is coupled to an end of the first radiation branch 101 close to the second radiation branch 102, and the second end of the second conductive bridge 302 is coupled to an end of the second radiation branch 102 close to the first radiation branch 101. Accordingly, the first antenna 100 includes a first feeding end 204, a second radiator 20, a first conductive bridge 301 and a first radiation branch 101, and the second antenna 200 includes a second feeding end 205, a second radiator 20, a second conductive bridge 302 and a second radiation branch 102. With such an arrangement, the impedance of the first antenna 100 can be adjusted through the first conductive bridge 301, and the impedance of the second antenna 200 can be adjusted through the second conductive bridge 302, which facilitates the impedance matching of the first antenna 100 and the second antenna 200.

[0232] The first conductive bridge 301 and the second conductive bridge 302 may be arranged at intervals along the extension direction of the first radiator 10. It can be understood that the length L3 of the conductive bridge 30 in this scenario is the sum of the length of the first conductive bridge 301 itself (the dimension along the extension direction parallel to the first radiator 10), the distance between the first conductive bridge 301 and the second conductive bridge 302, and the length of the second conductive bridge 302 itself. Exemplarily, in an implementation in which the length L3 of the conductive bridge 30 is 7 mm, the distance between the first conductive bridge 301 and the second conductive bridge 302 may be 4 mm, and accordingly, the lengths of the first conductive bridge 301 and the second conductive bridge 302 themselves may both be 1.5 mm.

[0233] It can be understood that the impedance of the first antenna 100 and the second antenna 200 can be adjusted by adjusting the length of the first conductive bridge 301 and the second conductive bridge 302, the width of the first conductive bridge 301 and the second conductive bridge 302 (the dimension along the extension direction perpendicular to the first radiator 10), and the distance between the first conductive bridge 301 and the second conductive bridge 302 to facilitate impedance matching of the first antenna 100 and the second antenna 200.

[0234] In the above implementation, the first radiation branch 101 includes a portion of the first radiator 10 located on a side of the first conductive bridge 301 away from the second conductive bridge 302, and a portion of the first radiator 10 connected to the first conductive bridge 301; correspondingly, the second radiation branch 102 includes a portion of the first radiator 10 located on a side of the second conductive bridge 302 away from the first conductive bridge 301, and a portion of the first radiator 10 connected to the second conductive bridge 302. A connecting branch connecting the first radiation branch 101 and the second radiation branch 102 may be provided between the first conductive bridge 301 and the second conductive bridge 302.

[0235] In this scenario, the first antenna 100 is used to generate a first resonance and a second resonance in the first working frequency band and the second working frequency band, respectively, and the second antenna 200 is used to generate a third resonance and a fourth resonance in the first working frequency band and the second working frequency band, respectively. Figure 2 and Figure 3As shown, the current distribution corresponding to the first resonance is a unidirectional current flowing from the first feeding end 204 to the open end of the first radiation branch 101 via a part of the second radiator 20, the conductive bridge 30 (or, in the implementation mode where the conductive bridge 30 includes the first conductive bridge 301 and the second conductive bridge 302, the first conductive bridge 301) and the first radiation branch 101, and the first radiation branch 101 mainly generates the first resonance; the current distribution corresponding to the third resonance is a unidirectional current flowing from the second feeding end 205 to the open end of the second radiation branch 102 via a part of the second radiator 20, the conductive bridge 30 (or, in the implementation mode where the conductive bridge 30 includes the first conductive bridge 301 and the second conductive bridge 302, the second conductive bridge 302) and the second radiation branch 102, and the second radiation branch 102 mainly generates the third resonance. Figure 6 and Figure 7 As shown, the current distribution corresponding to the second resonance is a unidirectional current flowing from the first feeding end 204 to the first open end of the second radiator 20 via the second radiator 20, and the corresponding second radiator 20 mainly generates the second resonance; the current distribution corresponding to the fourth resonance is a unidirectional current flowing from the second feeding end 205 to the second open end of the second radiator 20 via the second radiator 20, and the corresponding second radiator 20 mainly generates the fourth resonance. Exemplarily, the first open end may be an open end corresponding to the second radiator 20 and the first radiation branch 101, and the second open end may be an open end corresponding to the second radiator 20 and the second radiation branch 102.

[0236] It can be understood that the current is distributed in a sinusoidal manner on the first antenna 100 and the second antenna 200. Figure 2 and Figure 3 In the first decoupling mode, the current of the first feeding end 204 in the first antenna 100 is relatively large, the current at the end of the first radiation branch 101 is close to zero, and the direction of the current does not change during the transmission process. Therefore, the first antenna 100 and the second antenna 200 are in the λ1 / 4 mode, where λ1 is the wavelength corresponding to the first working frequency band, and the first decoupling mode is the fundamental mode. Please refer to Figure 6 and Figure 7 In the second decoupling mode, when feeding the first feeding terminal 204, the current of the first feeding terminal 204 in the first antenna 100 is relatively large, the current at the end of the second radiation branch 102 is close to zero, and the direction does not change during the transmission of the current; when feeding the second feeding terminal 205, the current of the second feeding terminal 205 is relatively large, the current at the end of the second radiation branch 102 is close to zero, and the direction does not change during the transmission of the current; therefore, the first antenna 100 and the second antenna 200 are in the λ2 / 4 mode, where λ2 is the wavelength corresponding to the second working frequency band, and the second decoupling mode is the fundamental mode.

[0237] In some embodiments, the ratio between the center frequency of the second working frequency band and the center frequency of the first working frequency band can be 1.68-2.8 (such as 1.68, 2, 2.8, etc.); with such a setting, the frequency difference between the second working frequency band and the first working frequency band is moderate, and the first working frequency band and the second working frequency band can be better covered. It can be understood that the center frequency of the second working frequency band can be greater than the center frequency of the first working frequency band, and accordingly, the ratio of the center frequency of the second working frequency band to the center frequency of the first working frequency band can be 1.68-2.8 (such as 1.68, 2, 2.8, etc.); or, the center frequency of the second working frequency band can be less than the center frequency of the first working frequency band, and accordingly, the ratio of the center frequency of the second working frequency band to the center frequency of the first working frequency band can be 1.68-2.8 (such as 1.68, 2, 2.8, etc.), and the embodiment of the present application does not limit the size relationship between the center frequency of the second working frequency band and the center frequency of the first working frequency band.

[0238] In some embodiments, the operating frequency bands of the first antenna 100 and the second antenna 200 further include a third operating frequency band, and the center frequency of the third operating frequency band is greater than the center frequency of the first operating frequency band and the center frequency of the second operating frequency band. This arrangement can further increase the bandwidth covered by the antenna assembly.

[0239] The antenna assembly also includes a third decoupling mode, which corresponds to the third working frequency band. The first antenna 100 is used to generate a fifth resonance in the third working frequency band, and the second antenna 200 is used to generate a sixth resonance in the third working frequency band. The fifth resonance corresponds to a higher-order mode of the first resonance, and the sixth resonance corresponds to a higher-order mode of the third resonance. Please refer to Figure 8 and Fig. 9 In the third decoupling mode, when the fifth resonance is generated, the current of the first feeding terminal 204 in the first antenna 100 is relatively large, the current at the end of the second radiation branch 102 is close to zero, and the current direction changes once during the current transmission process; when the sixth resonance is generated, the current of the second feeding terminal 205 is relatively large, the current at the end of the second radiation branch 102 is close to zero, and the current direction changes once during the current transmission process; therefore, the first antenna 100 and the second antenna 200 are 3λ3 / 4 modes, wherein λ3 is the wavelength corresponding to the third working frequency band, and the third decoupling mode is a higher-order mode of the first decoupling mode.

[0240] Fig.14The antenna matching schematic diagram of the antenna assembly in this scenario, the first feeding end 204 of the antenna assembly is connected to the transceiver 110 through the first matching capacitor C1 and the first matching inductor R1 connected in series, and the second feeding end 205 of the antenna assembly is connected to the transceiver 110 through the second matching capacitor C2 and the second matching inductor R2 connected in series. Since the transceiver 110 interface has a certain impedance (such as 50Ω), the parameters of the first matching capacitor C1, the first matching inductor R1, the second matching capacitor C2 and the second matching inductor R2 are reasonably set to match the impedance of the antenna assembly with the impedance of the transceiver 110 interface. In the implementation method where the impedance of the transceiver 110 interface is 50Ω, the capacitance values ​​of the first matching capacitor C1 and the second matching capacitor C2 can both be about 1pF, and the inductance values ​​of the first matching inductor R1 and the second matching inductor R2 can both be about 0.6nH.

[0241] Fig.15 The S parameter curve diagram when the conductive bridge 30 includes the first conductive bridge 301 and the second conductive bridge 302. It can be seen from the curve S12 that the S parameter between point 1 and point 2 is less than or equal to -16dB, the S parameter between point 3 and point 4 is less than or equal to -15dB, and the S parameter between point 5 and point 6 is less than or equal to -13.5dB. Therefore, the first operating frequency band is the 2.4GHz frequency band (such as 2.4GHz-2.4835GHz), the second operating frequency band is the 5GHz frequency band (such as 5.15GHz-5.85GHz), and the third operating frequency band is the 6GHz frequency band (such as 5.925GHz-7.125GHz). It can be seen that the operating frequency band of the antenna assembly covers all frequency bands of WLAN. Fig.15 and Fig.10 ,visible Fig.13 The antenna assembly performance shown is similar to Figure 1 The performance of the antenna components shown is substantially the same; thus, it can be seen that the integrated structure of the conductive bridge 30 or the conductive bridge 30 including the first conductive bridge 301 and the second conductive bridge 302 arranged at intervals has little effect on the performance of the antenna component.

[0242] Fig.16 The antenna efficiency curve is a graph when the conductive bridge 30 includes the first conductive bridge 301 and the second conductive bridge 302. It can be seen from points 1 and 2 in the graph that the antenna efficiency is greater than -0.5dB in the first working frequency band; it can be seen from points 3 and 4 in the graph that the antenna efficiency is greater than -1.6dB in the second working frequency band; it can be seen from points 5 and 6 in the graph that the antenna efficiency is greater than -1.2dB in the third working frequency band. It can be seen that the antenna assembly has good antenna efficiency in each working frequency band, and the performance of the antenna assembly is good.

[0243] Fig.17 is a directional pattern of the antenna assembly in the first operating frequency band; Fig.18is a directional pattern of the antenna assembly in the second operating frequency band; Fig.19 is the directional pattern of the antenna assembly in the third operating frequency band. Figure 17-Figure 19 It can be seen that the directional patterns of the first antenna and the second antenna in the antenna assembly in this scenario are complementary, which improves the omnidirectionality of the signal coverage of the antenna assembly, thereby making the antenna assembly have higher communication quality.

[0244] Please refer to Fig. 20 In this scenario, a first groove 203 and / or a first protrusion is provided on the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205. The first groove 203 can increase the impedance between the first feeding terminal 204 and the second feeding terminal 205, and the first protrusion can reduce the impedance between the first feeding terminal 204 and the second feeding terminal 205 to adjust the impedance between the first feeding terminal 204 and the second feeding terminal 205.

[0245] Exemplarily, the first feeding terminal 204 and the second feeding terminal 205 may be located on the side of the second radiator 20 away from the first radiator 10, and the corresponding first groove 203 and the first protrusion are also arranged on the side of the second radiator 20 away from the first radiator 10. The first groove 203 may penetrate the second radiator 20 along the thickness direction, and of course, the first groove 203 may not penetrate the second radiator along the thickness direction, that is, the first groove 203 reduces the thickness of the second radiator 20, and may also increase the impedance between the first feeding terminal 204 and the second feeding terminal 205.

[0246] In some implementations, the width L7 of the first groove 203 can be 5mm-10mm (5mm, 7mm, 9mm, 10mm, etc.), the depth L8 of the first groove 203 can be 2mm-5mm (2mm, 3mm, 5mm), and the length L5 of the first feeding end 204 and the second feeding end 205 along the extension direction of the first radiator 10 can be 0.5mm-3mm (such as 0.5mm, 1mm, 2.5mm, 3mm, etc.).

[0247] like Fig.21As shown, the first feeding end 204 of the antenna assembly is connected to the transceiver 110 through the first matching capacitor C1, the second matching inductor R2, and the third matching inductor R3 connected in series, wherein the first feeding end 204 is also grounded through the first matching inductor R1, and the end of the second matching inductor R2 facing the third matching inductor R3 is grounded through the second matching capacitor C2; the second feeding end 205 of the antenna assembly is connected to the transceiver 110 through the fourth matching capacitor C4, the fifth matching inductor R5, and the sixth matching inductor R6 connected in series, wherein the second feeding end 205 is also grounded through the fourth matching inductor R4, and the end of the fifth matching inductor R5 facing the sixth matching inductor R6 is grounded through the fifth matching capacitor C5. By reasonably setting the parameters of each matching capacitor and each matching inductor, the impedance of the antenna assembly can be matched with the impedance of the transceiver 110 interface. Exemplarily, in an implementation in which the interface impedance of the transceiver 110 is 50Ω, the inductance values ​​of the first matching inductor R1 and the fourth matching inductor R4 can both be about 12nH, and the inductance values ​​of the second matching inductor R2, the third matching inductor R3, the fifth matching inductor R5, and the sixth matching inductor R6 can both be about 1.2nH; the capacitance values ​​of the first matching capacitor C1 and the fourth matching capacitor C4 can both be about 0.8pF, and the capacitance values ​​of the second matching capacitor C2 and the fifth matching capacitor C5 can both be about 0.3pF.

[0248] contrast Fig.15 and Fig. 22 It can be seen that Fig.15 The antenna assembly has a low isolation (less than 15dB) in the 6GHz band (5.925GHz-7.125GHz). Fig. 22 A first groove 203 is provided on the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205, which can increase the impedance between the first feeding terminal 204 and the second feeding terminal 205, thereby optimizing the differential mode path impedance in the second decoupling mode and improving the isolation in the 6 GHz frequency band (5.925 GHz-7.125 GHz).

[0249] Fig.23The envelope correlation coefficient (ECC) curve of the antenna assembly when the first groove 203 is provided, the solid line in the figure is the omnidirectional envelope correlation coefficient (E-field 3D Envelope Correlation Coefficient isotropic) in the angular power spectrum under the 3D electric field, and the dotted line is the Laplace envelope correlation coefficient (E-field 3D Envelope Correlation Coefficient Laplace) in the angular power spectrum under the 3D electric field. Generally, the envelope correlation coefficient is less than 0.3, and the antenna assembly can achieve good MIMO performance; Fig.23 It can be seen that in the first working frequency band (for example, 2.4 GHz band), the second working frequency band (for example, 5 GHz band), and the third working frequency band (for example, 6 GHz band), the envelope correlation coefficient of the antenna assembly is less than 0.1, which shows that the MIMO performance of the antenna assembly in this scenario is relatively high.

[0250] Please refer to Fig.24 In some implementations, the antenna assembly may further include a floor 50, the floor 50 is grounded, the floor 50 may be disposed on a side of the second radiator 20 away from the first radiator 10, the upper surface of the floor 50 may be disposed coplanar with the first radiator 10 and the second radiator 20, and a clearance area may be formed between the floor 50 and the first radiator 10. In other implementations, the floor 50 may also be disposed on a side of the first radiator 10 away from the second radiator 20.

[0251] Please refer to Fig.25 The antenna assembly may further include a substrate 60, which is disposed at one end of the floor 50 close to the first radiator 10 and the second radiator 20. The substrate 60 is disposed parallel to the floor 50. The first radiator 10 and the second radiator 20 may be disposed on the substrate 60, and the substrate 60 may be used to support the first radiator 10 and the second radiator 20. Exemplarily, the first radiator 10 and the second radiator 20 may be printed on the substrate 60 to simplify the manufacturing difficulty of the antenna assembly. In other implementations, the floor 50 may also be printed on the substrate 60, and the floor 50, the first radiator 10, and the second radiator 20 may be fixed and supported by the substrate 60.

[0252] like Fig.26As shown, the floor 50 may be in the shape of a cuboid, with a length of 140 mm, a width of 70 mm, and a height of 1 mm; the substrate 60 may also be in the shape of a cuboid, with a length of 13 mm, a width of 70 mm, and a height of 1 mm. For example, the material of the substrate 60 may include epoxy glass cloth laminate (FR4), with a relative dielectric constant Dk of 4.4 and a loss tangent value tanσ=0.02.

[0253] Fig. 27 2 is a current distribution diagram on the antenna assembly when power is fed through the first feeding terminal 204 in the first decoupling mode. At this time, the current at the second feeding terminal 205 is small or equal to zero. It can be seen that when power is fed through the first feeding terminal 204, the first antenna 100 and the second antenna 200 simultaneously excite differential mode current and common mode current, and the superposition of the differential mode current and the common mode current makes the current at the second feeding terminal 205 small or equal to zero. Fig.28 2 is a current distribution diagram on the antenna assembly when feeding through the second feeding terminal 205 in the first decoupling mode. At this time, the current at the first feeding terminal 204 is small or equal to zero; it can be seen that when feeding through the second feeding terminal 205, the first antenna 100 and the second antenna 200 simultaneously excite differential mode current and common mode current, and the superposition of the differential mode current and the common mode current makes the current at the first feeding terminal 204 small or equal to zero. In the first decoupling mode, the current is distributed over the entire first radiator 10 and approximately half of the second radiator 20. At this time, the entire first radiator 10 radiates signals, so that the antenna assembly has higher efficiency. In addition, the current direction does not change on the first antenna 100 and the second antenna 200, and the first decoupling mode is the fundamental mode.

[0254] It can be understood that when one end of the first radiation branch 101 toward the second radiation branch 102 is connected to one end of the second radiation branch 102 toward the first radiation branch 101 (such as through a connecting branch), a small amount of current also flows between one end of the first radiation branch 101 toward the second radiation branch 102 and one end of the second radiation branch 102 toward the first radiation branch 101, but it does not affect the main current distribution on the first antenna 100 and the second antenna 200.

[0255] Fig.29 2 is a current distribution diagram on the antenna assembly when power is fed through the first feeding terminal 204 in the second decoupling mode. At this time, the current at the second feeding terminal 205 is small or equal to zero. It can be seen that when power is fed through the first feeding terminal 204, the first antenna 100 and the second antenna 200 simultaneously excite differential mode current and common mode current, and the superposition of the differential mode current and the common mode current makes the current at the second feeding terminal 205 small or equal to zero. Fig.302 is a current distribution diagram on the antenna assembly when feeding through the second feeding terminal 205 in the second decoupling mode. At this time, the current at the first feeding terminal 204 is small or equal to zero. It can be seen that when feeding through the second feeding terminal 205, the first antenna 100 and the second antenna 200 simultaneously excite differential mode current and common mode current, and the superposition of the differential mode current and the common mode current makes the current at the first feeding terminal 204 small or equal to zero. In the second decoupling mode, the current is mainly distributed on one side of the second radiator 20, and the current direction does not change on the first antenna 100 and the second antenna 200. The second decoupling mode is the fundamental mode.

[0256] Fig.31 : is a current distribution diagram on the antenna assembly when power is fed through the first feeding terminal 204 in the third decoupling mode. At this time, the current at the second feeding terminal 205 is small or equal to zero, and there is a position where the current is zero on the first radiator 10 (near point a1), and the current directions on both sides of the position where the current is zero are opposite; it can be seen that when power is fed through the first feeding terminal 204, the first antenna 100 and the second antenna 200 simultaneously excite differential mode current and common mode current, and the superposition of the differential mode current and the common mode current makes the current at the second feeding terminal 205 small or equal to zero. Fig.32 2 is a current distribution diagram on the antenna assembly when feeding through the second feeding terminal 205 in the fourth decoupling mode. At this time, the current at the first feeding terminal 204 is small or equal to zero. It can be seen that when feeding through the second feeding terminal 205, the first antenna 100 and the second antenna 200 simultaneously excite differential mode current and common mode current. The superposition of the differential mode current and the common mode current makes the current at the first feeding terminal 204 small or equal to zero. In the fourth decoupling mode, the current is mainly distributed on one side of the first radiator 10 and the second radiator 20. Fig.31 and Fig.32 It can be seen that there is a position where the current is zero on the first radiator 10 (near point a1), and the current directions on both sides of the position where the current is zero are opposite, and the fourth decoupling mode is a high-order mode.

[0257] Scene 2

[0258] Please refer to Fig.33, the difference between this scenario and scenario 1 is that the first radiator 10 includes a first radiating branch 101 and a second radiating branch 102, the first radiating branch 101 and the second radiating branch 102 are arranged at intervals, and the first radiating branch 101 is arranged at an end close to the second radiating branch 102 and the second radiating branch 102 is arranged at an interval. Such an arrangement can increase the impedance between the conductive bridge 30 and the first radiating branch 101, and also increase the impedance between the conductive bridge 30 and the second radiating branch 102, which is equivalent to increasing the length of the current flow path on the first radiating branch 101 and the second radiating branch 102, thereby reducing the length of the first radiating branch 101 and the second radiating branch 102 along their extension direction, so as to achieve miniaturization of the antenna assembly.

[0259] In an implementation in which the conductive bridge 30 includes a first conductive bridge 301 and a second conductive bridge 302, one end of the first conductive bridge 301 is connected to the second radiator 20, the other end of the first conductive bridge 301 is connected to an end of the first radiation branch 101 close to the second radiation branch 102, one end of the second conductive bridge 302 is connected to the second radiator 20, and the other end of the second conductive bridge 302 is connected to an end of the second radiation branch 102 close to the first radiation branch 101. Fig.13 and Fig.33 It can be seen that when the first radiation branch 101 and the second radiation branch 102 are coupled and connected, the length L1 of the first radiator 10 along the extension direction thereof can be 45 mm, and when the first radiation branch 101 and the second radiation branch 102 are arranged at intervals, the length L1 of the first radiator 10 along the extension direction thereof can be 44 mm. It can be seen that by arranging the first radiation branch 101 and the second radiation branch 102 at intervals, the impedance between the first conductive bridge 301 and the first radiation branch 101 can be increased, and the impedance between the second conductive bridge 302 and the second radiation branch 102 can also be increased, and the length of the first radiation branch 101 and the second radiation branch 102 along the extension direction thereof can be reduced, so as to realize the miniaturization of the antenna assembly.

[0260] Fig.34 When the first radiation branch 101 and the second radiation branch 102 are arranged at intervals, the S parameter curve of the antenna assembly can be seen from curve S12 that the S parameter between point 1 and point 2 is less than or equal to -18dB, the S parameter between point 3 and point 4 is less than or equal to -16dB, and the S parameter between point 5 and point 6 is less than or equal to -14.2dB. Therefore, the first operating frequency band is the 2.4GHz band (such as 2.4GHz-2.4835GHz), the second operating frequency band is the 5GHz band (such as 5.15GHz-5.85GHz), and the third operating frequency band is the 6GHz band (such as 5.925GHz-7.125GHz). It can be seen that the operating frequency band of the antenna assembly covers all frequency bands of WLAN.

[0261] In this scenario, the distance D3 between one end of the first radiation branch 101 close to the second radiation branch 102 and one end of the second radiation branch 102 close to the first radiation branch 101 can be 0.05-0.25 times (such as 0.05, 0.1, 0.25, etc.) the length L1 of the first radiator 10. With this arrangement, it is possible to ensure that there is a certain impedance between the conductive bridge 30 and the first radiation branch 101 and the second radiation branch 102, while avoiding the distance D3 between the first radiation branch 101 and the second radiation branch 102 being too large, which causes the length L1 of the first radiation branch 101 and the second radiation branch 102 to be too small, so as not to affect the performance of the antenna assembly.

[0262] Please refer to Fig.35 In some implementations, the second radiator 20 includes a third radiating branch 201 and a fourth radiating branch 202 that are spaced apart, the third radiating branch 201 and the fourth radiating branch 202 are spaced apart along the extension direction of the second radiator 20, the first feeding terminal 204 is disposed on the third radiating branch 201, the second feeding terminal 205 is disposed on the fourth radiating branch 202, and the conductive bridge 30 is coupled and connected with the third radiating branch 201 and the fourth radiating branch 202. Accordingly, the first antenna 100 includes a first feeding terminal 204, a third radiating branch 201, a conductive bridge 30, and a first radiator 10, and the second antenna 200 includes a second feeding terminal 205, a fourth radiating branch 202, a conductive bridge 30, and a first radiator 10. In an implementation in which the conductive bridge 30 includes a first conductive bridge 301 and a second conductive bridge 302 , the first antenna 100 includes a first feeding terminal 204 , a third radiation branch 201 , a first conductive bridge 301 , and a first radiator 10 , and the second antenna 200 includes a second feeding terminal 205 , a fourth radiation branch 202 , a second conductive bridge 302 , and a first radiator 10 .

[0263] By spacing the third radiation branch 201 and the fourth radiation branch 202, the impedance between the first feeding terminal 204 and the second feeding terminal 205 can be increased, thereby optimizing the differential mode path impedance in the second decoupling mode and improving the isolation in the 6 GHz frequency band (5.925 GHz-7.125 GHz).

[0264] In the above implementation, the distance D4 between the third radiation branch 201 and the fourth radiation branch 202 can be 0.05-0.25 times (such as 0.05, 0.1, 0.25, etc.) the length L1 of the first radiator 10. In this way, the distance D4 between the third radiation branch 201 and the fourth radiation branch 202 can be prevented from being too large or too small while improving the isolation of the 6 GHz frequency band.

[0265] Please refer to Fig.36In other implementations, the first radiator 10 includes a first radiation branch 101 and a second radiation branch 102 that are disposed at intervals, while the second radiator 20 includes a third radiation branch 201 and a fourth radiation branch 202 that are disposed at intervals. Fig.37 for Fig.36 The S21 parameter curve corresponding to the antenna assembly shown in the figure, the solid line is the S21 parameter curve when the third radiation branch 201 and the fourth radiation branch 202 are an integrated structure, and the dotted line is the S21 parameter curve when the distance between the third radiation branch 201 and the fourth radiation branch 202 is 0.4mm. Fig.37 It can be known that in the implementation method of setting the first radiation branch 101 and the second radiation branch 102 at an interval, and the third radiation branch 201 and the fourth radiation branch 202 at an interval, it is necessary to reduce the distance between the third radiation branch 201 and the fourth radiation branch 202 (such as the distance between the third radiation branch 201 and the fourth radiation branch 202 is 0.4mm), and appropriately extend the length of the first radiator 10 (such as from 44mm to 57mm), so that the first working frequency band moves from the high frequency side to near 2.4GHz to meet the 2.4GHz frequency band requirements.

[0266] Scene 3

[0267] Please refer to Fig.38 The difference between this scenario and scenario one and scenario two is that the first midpoint a2 of the first radiator 10 along the extension direction and the second midpoint a3 of the second radiator 20 along the extension direction are spaced apart in the extension direction of the first radiator 10; that is, when the second radiator 20 is axially symmetrical with respect to the axis of symmetry, the first radiator 10 is offset to the right with respect to the axis of symmetry, so that the antenna assembly has an asymmetric structure. Such a setting can enable the antenna assembly to adapt to irregular installation spaces, so as to improve the adaptability of the antenna assembly, and the antenna assembly can adapt to a more complex overall layout.

[0268] In some implementations, the second midpoint a3 is located between the first feeding terminal 204 and the second feeding terminal 205, and the distances between the first feeding terminal and the second feeding terminal 205 and the second midpoint a3 are equal, that is, the second midpoint a3 is located on the symmetry axis; at this time, the distance between the first midpoint a2 and the first feeding terminal 204 is smaller than the distance between the second midpoint a3 and the second feeding terminal 205, so that the first radiator 10 is offset toward the first feeding terminal 204 along the extension direction, thereby making the length of the first radiator 10 on the right side of the conductive bridge 30 greater than the length of the first radiator 10 on the left side of the conductive bridge 30. Exemplarily, the length L12 of the first radiator 10 on the right side of the conductive bridge 30 can be 21 mm, and the length L11 of the first radiator 10 on the left side of the conductive bridge 30 can be 17 mm.

[0269] Fig.39 Schematic diagram of antenna matching of the antenna assembly, the first feeding end 204 of the antenna assembly is connected to the transceiver 110 through the first matching capacitor C1 and the first matching inductor R1 connected in series, and the second feeding end 205 of the antenna assembly is connected to the transceiver 110 through the second matching capacitor C2 and the second matching inductor R2 connected in series. Reasonable setting of the parameters of the first matching capacitor C1, the first matching inductor R1, the second matching capacitor C2 and the second matching inductor R2 can match the impedance of the antenna assembly with the impedance of the interface of the transceiver 110. In the implementation mode where the interface impedance of the transceiver 110 is 50Ω, the capacitance values ​​of the first matching capacitor C1 and the second matching capacitor C2 can both be about 1pF, and the inductance values ​​of the first matching inductor R1 and the second matching inductor R2 can both be about 0.6nH.

[0270] Fig.40 The S parameter curve of the antenna assembly when the first midpoint a2 and the second midpoint a3 are set at intervals, in the first decoupling mode (for example, 2.4 GHz frequency band), the isolation of the antenna assembly is about 12.4 dB; Fig.15 and Fig.40 It can be seen that when the antenna assembly is a symmetrical structure, the isolation of the antenna assembly is about 16 dB, which shows that the performance of the antenna assembly has decreased.

[0271] like Fig.41 As shown, in some embodiments, the distance between the third midpoint a4 of the line connecting the first conductive bridge 301 and the second conductive bridge 302 and the first midpoint a2 in the extension direction of the first radiator 10 is less than or equal to 2 mm. The third midpoint a4 and the first midpoint a2 are substantially coincident with each other in the extension direction of the first radiator 10, wherein the line connecting the first conductive bridge 301 and the second conductive bridge 302 is parallel to the extension direction of the first radiator 10 and the second radiator 20, the third midpoint a4 and the first midpoint a2 are substantially coincident with each other in the extension direction of the first radiator 10, and the conductive bridge 30 is offset relative to the second radiator 20 with the first radiator 10, and the conductive bridge 30 is still located in the approximate middle position of the first radiator 10. Exemplarily, in Fig.40 On the basis of the structure shown, the first conductive bridge 301 is moved rightward by a certain distance, that is, the distance between the first conductive bridge 301 and the second conductive bridge 302 is increased, so that the third midpoint a4 coincides with the first midpoint a2. In the implementation mode where the length L12 of the first radiator 10 on the right side of the conductive bridge 30 can be 21 mm and the length L11 of the first radiator 10 on the left side of the conductive bridge 30 can be 17 mm, the first conductive bridge 301 can be moved rightward by 4 mm, so that the lengths of the first radiators 10 on the left and right sides of the conductive bridge 30 are equal (both are 17 mm).

[0272] Fig.42is the S parameter curve of the antenna assembly when the third midpoint a4 coincides with the first midpoint a2, Fig.42 It can be seen that making the third midpoint a4 coincide with the first midpoint a2 can improve the isolation of the first decoupling mode, thereby improving the performance of the antenna. Fig.42 From points 1, 2, 3, 4, 5, and 6, it can be seen that the first operating frequency band and the second operating frequency band of the antenna assembly are shifted toward high frequency.

[0273] like Fig.43 As shown, in some embodiments, the first conductive bridge 301 and the second radiator 20 are coupled and connected via the first inductance structure 303, or the first conductive bridge 301 and the first radiation branch 101 are coupled and connected via the first inductance structure 303. The first inductance structure 303 can increase the impedance between the first radiation branch 101 and the second radiator 20, increase the electrical length of the first antenna 100, and thus reduce the common mode operating frequency band. At the same time, a first groove 203 can also be provided on the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205. The second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205 is the place where the differential mode current must pass in the first decoupling mode and the second decoupling mode. The first groove 203 can increase the impedance between the first feeding terminal 204 and the second feeding terminal 205 to extend the differential mode operating frequency band. Through the above settings, the first decoupling mode and the second decoupling mode can be moved to a low frequency, so that the first operating frequency band is a 2.4 GHz frequency band and the second operating frequency band is a 5 GHz frequency band.

[0274] Fig.44 The antenna matching schematic diagram of the antenna assembly, the first feeding end 204 of the antenna assembly is connected to the transceiver 110 through the first matching capacitor C1, the second feeding end 205 of the antenna assembly is connected to the transceiver 110 through the second matching capacitor C2 and the second matching inductor R2 connected in series, the first inductor structure 303 is also grounded through the first matching inductor R1, and the second feeding end 205 is grounded through the third matching inductor R3. Reasonable setting of the parameters of each matching capacitor and each matching inductor can make the impedance of the antenna assembly match the impedance of the interface of the transceiver 110. In the implementation method where the interface impedance of the transceiver 110 is 50Ω, the capacitance value of the first matching capacitor C1 can be about 0.7pF, the capacitance value of the second matching capacitor C2 can be about 1pF, the inductance value of the first matching inductor R1 can be about 3.9nH, the inductance value of the second matching inductor R2 can be about 0.6nH, and the inductance value of the third matching inductor R3 can be about 8.2nH.

[0275] Fig.45 The S parameter curve of the antenna assembly after setting the first inductor structure 303 is as follows: Fig.45It can be seen that the first working frequency band of the antenna assembly is the 2.4 GHz band, and the corresponding isolation of the antenna assembly is higher than 17.5 dB; the second working frequency band is the 5 GHz band, and the corresponding isolation of the antenna assembly is higher than 17.5 dB; the third working frequency band is about 7.25 GHz, and the corresponding isolation of the antenna assembly is higher than about 16 dB. It can be seen that after the first inductor structure 303 is set, it has higher performance. However, the third working frequency band is about 7.25 GHz, which is difficult to cover the 6 GHz band.

[0276] like Fig.46 As shown, in some implementations, the first radiation branch 101 and the second radiation branch 102 both have a preset position, the current at the preset position is close to zero in the first working frequency band, and the current at the preset position is close to the maximum value in the third working frequency band; a second groove 103 is provided at the preset position on the first radiation branch 101 and the second radiation branch 102, and the impedance of the preset position can be increased by the second groove 103, so that the third working frequency band moves to a low frequency to cover the 6GHz band; at this time, the third working frequency band is close to the second working frequency band, and de-band decoupling can be achieved. Since the current at the preset position in the first working frequency band is close to zero, the second groove 103 does not affect the antenna assembly in the first working frequency band.

[0277] like Fig.46 As shown, illustratively, the width D5 of the second groove 103 along the extension direction of the first radiator 10 may be 3 mm-5 mm (such as 3 mm, 4 mm, 5 mm, etc.), and the depth D7 of the second groove 103 may be 1 mm-3 mm (such as 1 mm, 2 mm, 3 mm). Fig.46 In the embodiment, the other dimensions D6 can be 1mm-6mm (such as 1mm, 3.5mm, 6mm), L3 can be 2.25mm-11.25mm (such as 2.25mm, 8mm, 11.25mm), L9 can be 5mm-10mm (such as 5mm, 8.5mm, 10mm), L8 can be 1mm-5mm (such as 1mm, 3mm, 5mm), L7 can be 5mm-12mm (such as 5mm, 10mm, 12mm), and L10 can be 8mm-15mm (such as 8mm, 12.5mm, 15mm).

[0278] Fig.47 To set the S21 parameter curve of the antenna assembly before and after the second groove 103, Fig.47 and Fig.45 It can be seen that after the second groove 103 is provided, the third operating frequency band moves toward the low frequency to cover the 6 GHz frequency band. Fig.48 The S parameter curve of the antenna assembly before and after the second groove 103 is set at the preset position of the first radiation branch 101 and the second radiation branch 102 is shown by Fig.48 It can be seen that after the second groove 103 is set, the first working frequency band of the antenna assembly is 2.4 GHz, the second working frequency band is 5 GHz, and the third working frequency band is 6 GHz. It can be seen that the antenna assembly can cover various frequency bands of WLAN. Fig.49 Schematic diagram of antenna assembly efficiency after the second groove 103 is set. Fig.49 It can be seen that the antenna assembly has high efficiency in each operating frequency band and has high performance.

[0279] Scene 4

[0280] Please refer to Fig.50 The difference between this scenario and the above scenarios is that the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205 is coupled to ground. This arrangement facilitates the grounding of the current in the first antenna 100 and the second antenna 200.

[0281] In some implementations, the antenna assembly also includes a grounding branch 40, one end of which is coupled to the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205, and the other end of the grounding branch 40 is grounded. With this arrangement, the structure of the antenna assembly is simple and the manufacture of the antenna assembly is convenient. Fig.51 is a schematic diagram of the S parameters of the antenna assembly when the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205 is grounded through the ground branch 40, as shown in FIG. Fig.51 It can be seen that the first working frequency band of the antenna assembly is the 2.4 GHz frequency band, the second working frequency band is the 5 GHz frequency band, and the third working frequency band is the 6 GHz frequency band. It can be seen that the antenna assembly can cover various frequency bands of WLAN.

[0282] Figure 52-Figure 55 When the grounding branch 40 is provided, the current distribution diagrams of the first antenna 100 at 2.45 GHz, 5.1 GHz, 5.7 GHz and 7.1 GHz show that providing the grounding branch 40 does not affect the decoupling of the first antenna 100 and the second antenna 200 in each decoupling mode.

[0283] Please refer to Fig.56 In some implementations, the antenna assembly includes a fourth inductor structure 401, and the ground branch 40 is coupled to the ground through the fourth inductor structure 401. Exemplarily, the inductance value of the fourth inductor structure 401 may be 1nH-5nH (eg, 1nH, 3nH, 5nH, etc.). Fig.57 is a schematic diagram of the S parameters of the antenna assembly when the grounding branch 40 is grounded through the fourth inductor structure 401, as shown in FIG. Fig.57It can be seen that the first working frequency band of the antenna assembly is the 2.4 GHz frequency band, the second working frequency band is the 5 GHz frequency band, and the third working frequency band is the 6 GHz frequency band. It can be seen that the antenna assembly can cover various frequency bands of WLAN.

[0284] Please refer to Fig.58 In some implementations, the antenna assembly further includes a capacitor structure 402, and the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205 is coupled to ground via the capacitor structure 402; in an implementation in which the antenna assembly includes a grounding branch 40, the grounding branch 40 can be coupled to ground via the capacitor structure 402. Exemplarily, the capacitance value of the capacitor structure 402 can be 0.2pF-0.6pF (such as 0.2pF, 0.4pF, 0.6pF, etc.). Fig.59 is a schematic diagram of the S parameters of the antenna assembly when the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205 is grounded through the capacitor structure 402, as shown in FIG. Fig.59 It can be seen that the first working frequency band of the antenna assembly is the 2.4 GHz frequency band, the second working frequency band is the 5 GHz frequency band, and the third working frequency band is the 6 GHz frequency band. It can be seen that the antenna assembly can cover various frequency bands of WLAN.

[0285] Fig.60 is a comparison diagram of S21 curves when the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205 is directly grounded through the grounding branch 40, the grounding branch 40 is grounded through the fourth inductor structure 401, and the grounding branch 40 is grounded through the capacitor structure 402. Fig.60 It can be seen that when the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205 is directly grounded through the grounding branch 40, the isolation of the antenna component in the first decoupling mode is slightly smaller, which can meet general communication needs; when the grounding branch 40 is grounded through the fourth inductance structure 401, and the grounding branch 40 is grounded through the capacitance structure 402, in the first decoupling mode and the second decoupling mode, the isolation of the antenna component is greater than 15dB, and the isolation of the antenna component is relatively high, which can meet higher communication needs.

[0286] Please refer to Fig.61 In some implementations, the capacitor structure 402 includes a conductive block 403, which is coupled to the ground; a capacitor slot 404 is provided on the second radiator 20 between the first feeding terminal 204 and the second feeding terminal 205, and the conductive block 403 is provided in the capacitor slot 404, and the conductive block 403 is provided at intervals from the bottom and the wall of the capacitor slot 404. In this way, a capacitor structure 402 is formed between the conductive block 403 and the side wall of the capacitor slot 404, and there is no need to provide an additional capacitor structure 402, which simplifies the structure of the antenna assembly. In addition, the capacitor block is located in the capacitor slot 404, which can also improve the compactness of the structure of the antenna assembly.

[0287] In the above implementation, the capacitor block may include a conductive sheet extending along the bottom and wall of the capacitor slot 404 , and a conductive pin is provided on the conductive sheet corresponding to the bottom of the capacitor slot 404 , and the conductive pin is grounded.

[0288] Continue to refer to Fig.61 , the width of the first radiator 10 can be appropriately reduced to increase the impedance of the first radiator 10, and then the length L1 of the first radiator 10 can be reduced, and L1 can be 40mm-50mm (such as 40mm, 44mm, 50mm, etc.), so as to realize the miniaturization of the antenna assembly. Reasonable setting of the distance L14 between the first radiator 10 and the floor 50 can adjust the size of the clearance area of ​​the antenna assembly; illustratively, the distance L14 between the first radiator 10 and the floor 50 can be 5mm-15mm (such as 5mm, 7.5mm, 12mm, 15mm, etc.).

[0289] Scene 5

[0290] Please refer to Fig.62 The difference between this scenario and the above scenarios is that there is an angle between the plane where the antenna assembly is located and the plane where the floor 50 is located. By way of example, this scenario will be introduced by taking the example that the plane where the antenna assembly is located and the plane where the floor 50 is located can be vertically arranged. Of course, the angle between the plane where the antenna assembly is located and the plane where the floor 50 is located can also be 45°, 60°, etc.

[0291] In some implementations, the floor 50 may be disposed on a circuit board. In an implementation where the circuit board is a printed circuit board, the floor 50 may be a metal layer printed on the surface of the circuit board. In this case, an angle is provided between the plane where the antenna assembly is located and the plane where the floor 50 is located, so that the antenna assembly can be prevented from occupying the wiring space on the circuit board, thereby improving the rationality of the wiring space on the circuit board.

[0292] Exemplarily, a bracket 601 may be provided on the circuit board, and the antenna assembly may also be provided on the bracket 601 by electroplating, attaching or printing, so as to support the antenna assembly through the bracket 601. It is understandable that the bracket 601 needs to be made of insulating material to avoid short circuit of the antenna assembly caused by the bracket 601. Exemplarily, the material of the bracket 601 may include plastic, rubber, etc., and the relative dielectric constant of the bracket 601 may be about 2.8.

[0293] like Fig.63As shown, in some implementations, the length L1 of the first radiator 10 can be 46 mm, the width D1 of the first radiator 10 can be 4.8 mm, the length L2 of the second radiator 20 can be 29 mm, the width D2 of the second radiator 20 can be 6.5 mm, the distance D8 between the first radiator and the second radiator can be 1.5 mm, the width D5 of the second groove 103 can be 5 mm, the depth D7 of the second groove 103 can be 2 mm, the length L5 of the first feed branch 2041 and the second feed branch 2051 can be 3 mm, the width L15 of the first feed branch 2041 and the second feed branch 2051 can be 1.25 mm, the length L16 of the second radiator 20 outside the first feed branch 2041 and the second feed branch 2051 can be 7 mm, and the width L7 of the first groove 203 can be 9 mm. A first fixed branch node 304 is arranged at one end of the first feeding branch node 2041 away from the second radiator 20, and a second fixed branch node 305 is arranged at one end of the second feeding branch node 2051 away from the second radiator 20. The first fixed branch node 304 and the second fixed branch node 305 can be perpendicular to the plane where the antenna assembly is located, so that the first fixed branch node 304 and the second fixed branch node 305 can be attached to the circuit board to be connected to the circuit on the circuit board. Exemplarily, the extension length L17 of the first fixed branch node 304 and the second fixed branch node 305 along the direction parallel to the circuit board can be 5.6 mm.

[0294] Fig.64Schematic diagram of antenna matching of the antenna assembly. The first feeding end 204 of the antenna assembly is connected to the transceiver 110 through the first matching capacitor C1 and the second matching inductor R2 connected in series. The first feeding end 204 is also grounded through the first matching inductor R1. The end of the second matching inductor R2 facing the first matching capacitor C1 is grounded through the second matching capacitor C2. The end of the second matching inductor R2 away from the first matching capacitor C1 is grounded through the third matching capacitor C3. The second feeding end 205 of the antenna assembly is connected to the transceiver 110 through the fourth matching capacitor C4 and the fourth matching inductor R4 connected in series. The second feeding end 205 is also grounded through the third matching inductor R3. The end of the fourth matching inductor R4 facing the fourth matching capacitor C4 is grounded through the fifth matching capacitor C5. The end of the fourth matching inductor R2 away from the fourth matching capacitor C4 is grounded through the sixth matching capacitor C6. Reasonable setting of the parameters of each matching capacitor and each matching inductor can make the impedance of the antenna assembly match the impedance of the transceiver 110 interface. In an implementation in which the interface impedance of the transceiver 110 is 50Ω, the capacitance values ​​of the first matching capacitor C1 and the fourth capacitor may both be about 1 pF, the capacitance values ​​of the second matching capacitor C2 and the fifth capacitor C5 may be about 0.2 pF, the capacitance values ​​of the third matching capacitor C3 and the sixth capacitor C6 may be about 0.3 pF, the inductance values ​​of the first matching inductor R1 and the third matching inductor R3 may be about 6.8 nH, and the inductance values ​​of the second matching inductor R2 and the fourth matching inductor R4 may be about 1.5 nH.

[0295] Fig.65 is an S parameter curve diagram of the antenna assembly when the plane where the antenna assembly is located is perpendicular to the plane where the floor 50 is located, Fig.65 It can be seen that the first working frequency band of the antenna assembly is the 2.4 GHz band, the second working frequency band is the 5 GHz band, and the third working frequency band is the 6 GHz band. It can be seen that the antenna assembly can cover various frequency bands of WLAN; in addition, in the first working frequency band, the second working frequency band and the third working frequency band, the isolation of the antenna assembly is greater than 18 dB, and the antenna assembly has a high isolation.

[0296] Fig.66 is a curve diagram of antenna efficiency of the antenna assembly when the plane where the antenna assembly is located is perpendicular to the plane where the floor 50 is located, Fig.66 It can be seen that in the first working frequency band, the second working frequency band and the third working frequency band, the antenna efficiency is better than -1.5dB, which shows that the performance of the antenna assembly is good. In the implementation of the communication device including the telematics processor, the communication quality between the antenna assembly and the user terminal, satellite, communication base station and other equipment is good, which can improve the positioning and navigation accuracy of the vehicle.

[0297] Scene 6

[0298] like Fig.67As shown, the difference between this scenario and the above scenario is that the first radiator 10 includes a first radiating branch 101, a second radiating branch 102 and a fifth radiating branch 104 connected to each other, the conductive bridge 30 includes a first conductive bridge 301, a second conductive bridge 302 and a third conductive bridge 309, and the second radiator 20 includes a third radiating branch 201, a fourth radiating branch 202 and a sixth radiating branch 206 connected to each other; the first radiating branch 101, the third radiating branch 201 and the first conductive bridge 301 are located in a first plane, and the first radiating branch 101 is coupled to the third radiating branch 201 through the first conductive bridge 301. The third radiation branch 201 is connected together, and a first feeding terminal 204 is arranged on the third radiation branch 201; the second radiation branch 102, the fourth radiation branch 202 and the second conductive bridge 302 are located in the second plane, the second radiation branch 102 is coupled with the fourth radiation branch 202 through the second conductive bridge 302, and a second feeding terminal 205 is arranged on the fourth radiation branch 202; the fifth radiation branch 104, the sixth radiation branch 206 and the third conductive bridge 309 are located in the third plane, the fifth radiation branch 104 is coupled with the sixth radiation branch 206 through the third conductive bridge 309, and a third feeding terminal 209 is arranged on the sixth radiation branch 206.

[0299] Through the above configuration, the first antenna 100 includes a first feeding terminal 204, a third radiating branch 201, a first conductive bridge 301 and a first radiating branch 101, the second antenna 200 includes a second feeding terminal 205, a fourth radiating branch 202, a second conductive bridge 302 and a second radiating branch 102, and the third antenna 300 includes a third feeding terminal 209, a fifth radiating branch 104, a third conductive bridge 309 and a sixth radiating branch 206. Any one of the first antenna 100, the second antenna 200 and the third antenna 300 can be decoupled from the other two, thereby achieving self-decoupling of the antenna assembly.

[0300] The first plane, the second plane and the third plane intersect at a same straight line perpendicular to the floor, and the first plane, the second plane and the third plane are symmetrically arranged around the center of the straight line.

[0301] In this scenario, the first plane, the second plane, and the third plane intersect at the same straight line perpendicular to the floor 50, and the first plane, the second plane, and the third plane are symmetrically arranged around the straight line; that is, the angles between the first plane and the second plane and the third plane are all 120°. Exemplarily, the first antenna 100, the second antenna 200, and the third antenna 300 can also be symmetrically arranged around the straight line to improve the structural regularity of the antenna assembly and facilitate the manufacture of the antenna assembly.

[0302] Please refer to Fig.67 and Fig.68In some implementations, the antenna assembly further includes a first dielectric plate 602, a second dielectric plate 603, and a third dielectric plate 604. The first dielectric plate 602, the second dielectric plate 603, and the third dielectric plate 604 are all arranged perpendicular to the floor 50. The first dielectric plate 602, the second dielectric plate 603, and the third dielectric plate 604 intersect at the same straight line perpendicular to the floor 50, and are arranged symmetrically around the center of the straight line. The first antenna 100 is arranged on the first dielectric plate 602, the second antenna 200 is arranged on the second dielectric plate 603, and the third antenna 300 is arranged on the third dielectric plate 604. Such an arrangement facilitates the support and fixation of the first antenna 100, the second antenna 200, and the third antenna 300.

[0303] Fig.69 The structure of the first antenna 100 is shown in the figure: L11 can be 20.5mm, L14 can be 15.7mm, D1 can be 4.8mm, L16 can be 5mm, L17 can be 2mm, L18 can be 10mm, L19 can be 3mm, L20 can be 3.5mm, L21 can be 5mm, L22 can be 2.5mm, L23 can be 4mm, L24 can be 9mm, L25 can be 5mm, L26 can be 6.4mm, L27 can be 4.5mm, and L28 can be 2mm. It can be understood that the structures of the second antenna 200 and the third antenna 300 can be roughly the same as the structure of the first antenna 100, and will not be repeated here.

[0304] It can be understood that the open end of the first radiation branch 101 (the position corresponding to L16) is bent, and such a configuration can increase the current length of the first radiation branch 101 and the impedance of the first radiation branch 101; in addition, a recessed structure (the portion corresponding to L18) is provided on the first radiation branch 101, and the recessed structure can also increase the impedance of the first radiation branch 101. Since the open end of the first radiation branch 101 is bent, the length of the first radiation branch 101 can be reduced, thereby reducing the volume of the antenna assembly.

[0305] Similarly, the open end of the second radiation branch 102 (the position corresponding to L23) is bent, and such a configuration can increase the current length of the second radiation branch 102 and the impedance of the second radiation branch 102; in addition, a recessed structure (the portion corresponding to L21) is provided on the second radiation branch 102, and the recessed structure can also increase the impedance of the second radiation branch 102. Since the open end of the second radiation branch 102 is bent, the length of the second radiation branch 102 can be reduced, thereby reducing the volume of the antenna assembly.

[0306] like Fig.70As shown, illustratively, when the first working frequency band signal is fed to the first feeding terminal 204, the current at the second feeding terminal 205 is zero or close to zero, which can eliminate or reduce the interference between the first antenna 100 and the second antenna 200, and achieve decoupling of the first antenna 100 and the second antenna 200; at the same time, the current at the third feeding terminal 209 is also zero or close to zero, which can eliminate or reduce the interference between the first antenna 100 and the third antenna 300, and achieve decoupling of the first antenna 100 and the third antenna 300. Similarly, as Fig.71 As shown, when the second working frequency band is fed to the first feeding terminal 204, the current at the second feeding terminal 205 is zero or close to zero, which can eliminate or reduce the interference between the first antenna 100 and the second antenna 200, and achieve decoupling of the first antenna 100 and the second antenna 200; at the same time, the current at the third feeding terminal 209 is zero or close to zero, which can eliminate or reduce the interference between the first antenna 100 and the third antenna 300, and achieve decoupling of the first antenna 100 and the third antenna 300.

[0307] Fig.72 Schematic diagram of antenna matching of the antenna assembly. The first feeding terminal 204 of the antenna assembly is connected to the transceiver 110 through the first matching capacitor C1 and the second matching inductor R2 connected in series. The first feeding terminal 204 is also grounded through the first matching inductor R1, and one end of the second matching inductor R2 facing the first matching capacitor C1 is grounded through the second matching capacitor C2. The second feeding terminal 205 of the antenna assembly is connected to the transceiver 110 through the third matching capacitor C3 and the fourth matching inductor R4 connected in series. The second feeding terminal 205 is also grounded through the third matching inductor R3, and one end of the fourth matching inductor R4 facing the third matching capacitor C3 is grounded through the fourth matching capacitor C4. The third feeding terminal 209 of the antenna assembly is connected to the transceiver 110 through the fifth matching capacitor C5 and the sixth matching inductor R6 connected in series. The third feeding terminal 209 is also grounded through the fifth matching inductor R5, and one end of the sixth matching inductor R6 facing the fifth matching capacitor C5 is grounded through the sixth matching capacitor C6.

[0308] Reasonable setting of the parameters of each matching capacitor and each matching inductor can make the impedance of the antenna assembly match the impedance of the interface of the transceiver 110. In the implementation mode where the interface impedance of the transceiver 110 is 50Ω, the inductance values ​​of the first matching inductor R1, the third matching inductor R3, and the fifth matching inductor R5 can be about 10nH, the capacitance values ​​of the first matching capacitor C1, the third matching capacitor C3, and the fifth matching capacitor C5 can be about 0.5pF, the capacitance values ​​of the second matching capacitor C2, the fourth matching capacitor C4, and the sixth matching capacitor C6 can be about 0.2pF, and the inductance values ​​of the second matching inductor R2, the fourth matching inductor R4, and the sixth matching inductor R6 can be about 1nH.

[0309] Fig.73 is the S parameter curve of the antenna component in this scenario, Fig.73 It can be seen that the first working frequency band of the antenna assembly is the 2.4 GHz frequency band, the second working frequency band is the 5 GHz frequency band, and the third working frequency band is the 6 GHz frequency band. It can be seen that the antenna assembly can cover various frequency bands of WLAN. Fig.73 It can be seen that the frequency band where S11 is less than -6dB and S21 is less than 15dB can cover 2.4GHz-2.5GHz and 4.59GHz-9.4GHz. The antenna assembly has a wide operating frequency band bandwidth while ensuring high isolation (ultra-wideband high isolation MIMO antenna).

[0310] Please refer to Fig.74 In other embodiments, an antenna assembly is also provided, the antenna assembly includes a conductive plate 70, a first radiator, a second radiator and a conductive bridge, the first radiator includes a first slot 105 arranged on the conductive plate 70, the second radiator includes a second slot 207 arranged on the conductive plate 70, the second radiator is arranged at intervals from the first radiator, and a first feeding end 204 and a second feeding end 205 are arranged at intervals on the conductive plate 70 corresponding to the second radiator, and the antenna assembly can be fed through the first feeding end 204 and the second feeding end 205. The conductive bridge may include a third slot 306 arranged between the first radiator and the second radiator, one end of the third slot 306 is connected to the first slot, and the other end of the third slot 306 is connected to the second slot 207.

[0311] Through the above configuration, the antenna assembly includes a first antenna 100 and a second antenna 200. The first antenna 100 includes: a first feeding terminal 204, a first radiator, a conductive bridge, and a second radiator. The second antenna 200 includes a second feeding terminal 205, a first radiator, a conductive bridge, and a second radiator. The operating frequency bands of the first antenna 100 and the second antenna 200 include the same frequency band.

[0312] Similar to the above embodiment, when a signal is fed to the first feeding terminal 204, the first antenna 100 and the second antenna 200 simultaneously excite differential mode current and common mode current, and the differential mode current and the common mode current are in the same direction at the first feeding terminal 204, and are retained after the two are superimposed; the differential mode current and the common mode current are in opposite directions and are approximately equal in magnitude at the second feeding terminal 205, and after the two are superimposed, the current at the second feeding terminal 205 is zero or close to zero, which can eliminate or reduce the interference between the first antenna 100 and the second antenna 200, improve the isolation of the first antenna 100 and the second antenna 200, and achieve decoupling of the first antenna 100 and the second antenna 200. Similarly, when a signal is fed to the second feeding terminal 205, the current at the first feeding terminal 204 is zero or close to zero, which can eliminate or reduce the interference between the first antenna 100 and the second antenna 200, improve the isolation of the first antenna 100 and the second antenna 200, and also achieve decoupling of the first antenna 100 and the second antenna 200, that is, self-decoupling of the antenna assembly.

[0313] The antenna assembly provided by the embodiment of the present application has a first radiator and a second radiator spaced apart, the first radiator includes a first slot 105 disposed on a conductive plate 70, the second radiator includes a second slot 207 disposed on the conductive plate 70, and a first feeding terminal 204 and a second feeding terminal 205 are spaced apart on the conductive plate 70 corresponding to the second radiator, and the antenna assembly can be fed through the first feeding terminal 204 and the second feeding terminal 205. The conductive bridge includes a third slot 306 disposed between the first radiator and the second radiator, one end of the third slot 306 is connected to the first slot, and the other end of the third slot 306 is connected to the second slot 207; so that the antenna assembly includes a first antenna 100 and a second antenna 200, the working frequency bands of the first antenna 100 and the second antenna 200 include the same frequency band, the first antenna 100 includes a first feeding terminal 204, a first radiator, a conductive bridge, and a second radiator, and the second antenna 200 includes a second feeding terminal 205, a first radiator, a conductive bridge, and a second radiator. When the antenna assembly is fed through the first feeding terminal 204 or the second feeding terminal 205, the first antenna 100 and the second antenna 200 both operate in the same frequency band, and there is a high degree of isolation between the first antenna 100 and the second antenna 200, thereby achieving decoupling of the first antenna 100 and the second antenna 200.

[0314] The above is only a specific implementation of the embodiment of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An antenna assembly, characterized in that: include: The first radiator; a second radiator, the second radiator being spaced apart from the first radiator, and the second radiator being spaced apart from the first feeding end and the second feeding end; a conductive bridge, wherein the conductive bridge is disposed between the first radiator and the second radiator, a first end of the conductive bridge is coupled to the first radiator, and a second end of the conductive bridge is coupled to the second radiator; The antenna assembly includes a first antenna and a second antenna, the first antenna includes: the first feeding end, the first radiator, the conductive bridge, and the second radiator, the second antenna includes the second feeding end, the first radiator, the conductive bridge, and the second radiator, and the operating frequency bands of the first antenna and the second antenna include the same frequency band.

2. The antenna assembly according to claim 1, characterized in that: The first radiator includes a first radiating branch located at one side of the conductive bridge and a second radiating branch located at the other side of the conductive bridge. The conductive bridge is coupled to the first radiating branch and the second radiating branch.

3. The antenna assembly according to claim 2, characterized in that: The first radiator further includes a connecting branch, and an end of the first radiating branch close to the second radiating branch and an end of the second radiating branch close to the first radiating branch are connected through the connecting branch.

4. The antenna assembly according to claim 2, characterized in that: An end of the first radiation branch close to the second radiation branch is spaced apart from an end of the second radiation branch close to the first radiation branch.

5. The antenna assembly according to claim 4, characterized in that: The distance between one end of the first radiation branch close to the second radiation branch and one end of the second radiation branch close to the first radiation branch is 0.05-0.25 times the length of the first radiator.

6. The antenna assembly according to any one of claims 2 to 5, characterized in that: A first groove and / or a first protrusion is arranged on the second radiator between the first feeding end and the second feeding end.

7. The antenna assembly according to any one of claims 2 to 6, characterized in that: The conductive bridge includes a first conductive bridge and a second conductive bridge that are spaced apart, wherein the first end of the first conductive bridge and the first end of the second conductive bridge are both coupled to the second radiator, the second end of the first conductive bridge is coupled to an end of the first radiation branch that is close to the second radiation branch, and the second end of the second conductive bridge is coupled to an end of the second radiation branch that is close to the first radiation branch.

8. The antenna assembly according to claim 7, characterized in that: A first midpoint of the first radiator along the extension direction and a second midpoint of the second radiator along the extension direction are spaced apart in the extension direction of the first radiator, the second midpoint is located between the first feeding end and the second feeding end, and the distance between the first midpoint and the first feeding end is smaller than the distance between the second midpoint and the second feeding end.

9. The antenna assembly according to claim 8, characterized in that: A distance between a third midpoint of a connection line between the first conductive bridge and the second conductive bridge and the first midpoint in an extending direction of the first radiator is less than or equal to 2 mm.

10. The antenna assembly according to claim 9, characterized in that: The first conductive bridge and the second radiator are coupled and connected via a first inductance structure, or the first conductive bridge and the first radiation branch are coupled and connected via a first inductance structure.

11. The antenna assembly according to any one of claims 2 to 10, characterized in that: The working frequency band of the first antenna includes a first working frequency band and a second working frequency band, and the working frequency band of the second antenna includes the first working frequency band and the second working frequency band, wherein the first antenna is used to generate a first resonance and a second resonance in the first working frequency band and the second working frequency band, respectively, and the second antenna is used to generate a third resonance and a fourth resonance in the first working frequency band and the second working frequency band, respectively.

12. The antenna assembly according to claim 11, characterized in that: The current distribution corresponding to the first resonance is a unidirectional current flowing from the first feeding end via part of the second radiator, the conductive bridge and the first radiation branch to the open end of the first radiation branch; the current distribution corresponding to the third resonance is a unidirectional current flowing from the second feeding end via part of the second radiator, the conductive bridge and the second radiation branch to the open end of the second radiation branch; the current distribution corresponding to the second resonance is a unidirectional current flowing from the first feeding end via the second radiator to the first open end of the second radiator; and the current distribution corresponding to the fourth resonance is a unidirectional current flowing from the second feeding end via the second radiator to the second open end of the second radiator.

13. The antenna assembly according to claim 11 or 12, characterized in that: A frequency ratio of a center frequency of the second working frequency band to a center frequency of the first working frequency band is 1.68-2.

8.

14. The antenna assembly according to claim 13, characterized in that: The working frequency bands of the first antenna and the second antenna further include a third working frequency band, and a center frequency of the third working frequency band is greater than a center frequency of the first working frequency band and a center frequency of the second working frequency band.

15. The antenna assembly according to claim 14, characterized in that: The first antenna is used to generate a fifth resonance in the third working frequency band, and the second antenna is used to generate a sixth resonance in the third working frequency band; the fifth resonance corresponds to a higher-order mode of the first resonance, and the sixth resonance corresponds to a higher-order mode of the third resonance.

16. The antenna assembly according to claim 14 or 15, characterized in that: The first radiation branch node and the second radiation branch node both have a preset position, and the current at the preset position is close to zero in the first working frequency band, and the current at the preset position is close to the maximum value in the third working frequency band, wherein a second groove is provided at the preset position on the first radiation branch node and the second radiation branch node.

17. The antenna assembly according to any one of claims 1 to 16, characterized in that: The length of the conductive bridge along the extension direction of the first radiator is 0.05-0.25 times the length of the first radiator.

18. The antenna assembly according to any one of claims 1 to 17, characterized in that: The second radiator includes a third radiating branch and a fourth radiating branch arranged at intervals, the first feeding end is arranged on the third radiating branch, the second feeding end is arranged on the fourth radiating branch, and the conductive bridge is coupled to both the third radiating branch and the fourth radiating branch.

19. The antenna assembly according to claim 18, characterized in that The distance between the third radiation branch and the fourth radiation branch is 0.05-0.25 times the length of the first radiator.

20. The antenna assembly according to any one of claims 1 to 19, characterized in that: The first feeding end includes a first feeding branch disposed on the second radiator, and the second feeding end includes a second feeding branch disposed on the second radiator.

21. The antenna assembly according to claim 20, characterized in that The antenna assembly also includes a second inductance structure and a third inductance structure, one end of the second inductance structure is coupled to the first feed branch, the other end of the second inductance structure is grounded, one end of the third inductance structure is coupled to the second feed branch, and the other end of the third inductance structure is grounded.

22. The antenna assembly according to any one of claims 1 to 21, characterized in that: The first feeding end and the second feeding end are arranged at intervals along the extension direction of the second radiator, and the distance between the first feeding end and the second feeding end is 0.25-0.5 times the length of the second radiator.

23. The antenna assembly according to any one of claims 1 to 22, characterized in that: The width of the second radiator along the direction perpendicular to the extension is 1 / 3-3 times the width of the first radiator along the direction perpendicular to the extension, and the width of the second radiator along the direction perpendicular to the extension and the width of the first radiator along the direction perpendicular to the extension are both greater than or equal to 1 mm.

24. The antenna assembly according to any one of claims 1 to 23, characterized in that: The ratio of the length of the second radiator to the length of the first radiator may be 0.46-0.

66.

25. The antenna assembly according to any one of claims 1 to 24, characterized in that: Along the extension direction of the first radiator, the difference in length of parts of the first radiator on both sides of the conductive bridge is less than or equal to 0.1 times the length of the first radiator; along the extension direction of the second radiator, the difference in length of parts of the second radiator on both sides of the conductive bridge is less than or equal to 0.1 times the length of the second radiator.

26. The antenna assembly according to claim 25, characterized in that A difference between a distance between the first feeding end and the conductive bridge and a distance between the second feeding end and the conductive bridge is less than or equal to 0.1 times a length of the conductive bridge along an extending direction of the first radiator.

27. The antenna assembly according to claim 25 or 26, characterized in that: The conductive bridge comprises a first conductive bridge and a second conductive bridge which are spaced apart from each other, wherein the first end of the first conductive bridge and the first end of the second conductive bridge are both coupled to the second radiator, the second end of the first conductive bridge is coupled to an end of the first radiation branch close to the second radiation branch, and the second end of the second conductive bridge is coupled to an end of the second radiation branch close to the first radiation branch; A difference between the lengths of the first conductive bridge and the second conductive bridge along an extending direction of the first radiator is less than or equal to 1 mm.

28. The antenna assembly according to any one of claims 1 to 27, characterized in that: The first radiator includes a first radiating branch, a second radiating branch and a fifth radiating branch, the conductive bridge includes a first conductive bridge, a second conductive bridge and a third conductive bridge, and the second radiator includes a third radiating branch, a fourth radiating branch and a sixth radiating branch; The first radiation branch, the third radiation branch and the first conductive bridge are located in a first plane, the first radiation branch is coupled to the third radiation branch through the first conductive bridge, and the third radiation branch is provided with a first feeding terminal; The second radiation branch, the fourth radiation branch and the second conductive bridge are located in a second plane, the second radiation branch is coupled to the fourth radiation branch via the second conductive bridge, and the fourth radiation branch is provided with a second feeding terminal; The fifth radiation branch, the sixth radiation branch and the third conductive bridge are located in a third plane, the fifth radiation branch is coupled to the sixth radiation branch through the third conductive bridge, and the sixth radiation branch is provided with a third feeding terminal; The first plane, the second plane and the third plane intersect at a same straight line perpendicular to the floor, and the first plane, the second plane and the third plane are symmetrically arranged around the center of the straight line.

29. A communication device, characterized in that: It comprises a shell and the antenna assembly according to any one of claims 1 to 28, wherein the shell is arranged to form a mounting cavity, and the antenna assembly is arranged in the mounting cavity.

30. A vehicle, characterized in that: It comprises a vehicle body and the communication device according to claim 29, wherein the communication device is arranged on the vehicle body.

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