Antenna assembly and vehicle

Abstract

The invention provides an antenna assembly and a vehicle. The antenna assembly comprises a first antenna, a second antenna and a heater, the first antenna comprises a first radiator, the first radiator comprises a first radiation branch knot and a first feeding point, and the first radiation branch knot is connected with the first feeding point; the second antenna comprises a second radiation branch knot and a second feeding point, and the second radiation branch knot is connected with the second feeding point; the heater comprises at least one coupling branch knot; the first radiator and the second antenna work in at least one same frequency band when being excited; the first radiation branch knot is coupled with one coupling branch knot of the at least one coupling branch knot, and the second radiation branch knot is coupled with one coupling branch knot of the at least one coupling branch knot. Therefore, in the application, both the first radiator of the first antenna and the second antenna can be coupled with the heater, and the radiation capability and the communication quality of the antenna assembly are improved. Moreover, diversity reception can be realized by the first radiator and the second antenna.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to an antenna assembly and a vehicle. Background Art

[0002] With the rapid development of wireless communications, demands for communication quality are becoming increasingly stringent. As a common means of transportation in daily life, cars are also placing increasingly stringent demands on antennas to achieve superior signal quality. The structure, size, and mounting location of car radio antennas significantly impact the quality of the vehicle's communication system. To achieve a "stealth" effect without detracting from the vehicle's aesthetics, radio antennas are often positioned above the rear windshield. Heater lines are also installed on the rear windshield to provide defogger / defrost. Furthermore, spoilers are positioned above the rear windshield, at least partially covering the upper area. The spoiler, which houses a metal bracket, significantly reduces the radio antenna's communication quality. Summary of the Invention

[0003] In order to solve the above technical problems, the present application provides an antenna assembly and a vehicle, which can improve the radiation capability and communication quality of the antenna assembly.

[0004] In a first aspect, the present application provides an antenna assembly, the antenna assembly comprising:

[0005] a first antenna, the first antenna comprising a first radiator, the first radiator comprising a first radiating branch and a first feeding point, the first radiating branch being connected to the first feeding point;

[0006] a second antenna, the second antenna comprising a second radiating branch and a second feeding point, the second radiating branch being connected to the second feeding point;

[0007] A heater comprising at least one coupling branch;

[0008] The first radiator and the second antenna operate in at least one same frequency band when excited;

[0009] The first radiation branch is coupled to one of the at least one coupling branch, and the second radiation branch is coupled to one of the at least one coupling branch.

[0010] Thus, in this application, the first radiator is coupled to the heater, and the second antenna is coupled to the heater. This coupling can guide the current distribution of the first radiator and the second antenna, reducing the impact of the metal base on the radiation performance of the first radiator and the second antenna, thereby improving the radiation performance and communication quality of the first radiator and the second antenna. Moreover, when the first radiator and the second antenna are excited, they operate in at least one of the same frequency bands, enabling diversity reception and improving the omnidirectionality of the diversity pattern.

[0011] In some possible embodiments of the first aspect, the first radiator includes a first radiating ring, the first radiating branch is at least a portion of a conductive line of the first radiating ring, the at least one coupling branch includes a first coupling branch, and the first radiating branch is coupled to the first coupling branch;

[0012] The first radiation ring is a closed ring structure, or a breakpoint is provided on the first radiation branch of the first radiation ring.

[0013] Thus, in this application, the first radiating loop effectively increases the total length of the conductive line of the first radiator and reduces the board area occupied by the first radiator. Furthermore, the first radiating branch, which is at least part of the conductive line of the first radiating loop, can couple with the first coupling branch, thereby improving the structural compactness of the first radiator and reducing the board area occupied by the first radiator. Furthermore, the first radiating branch of the first radiating loop is designed with breakpoints to enable the transmission and reception of signals in at least two different operating frequency bands.

[0014] In some possible embodiments of the first aspect, the second antenna includes a second radiation ring, the second radiation branch is at least a portion of the conductive line of the second radiation ring, the at least one coupling branch includes a second coupling branch, and the second radiation branch is coupled to the second coupling branch;

[0015] The second radiation ring is a closed ring, or a breakpoint is provided on the second radiation branch of the second radiation ring.

[0016] Thus, in this application, the second radiating loop effectively increases the total length of the second antenna's conductive line and reduces the second antenna's footprint. Furthermore, the second radiating branch, which is at least part of the conductive line of the second radiating loop, can couple with the second coupling branch, improving the second antenna's structural compactness and reducing its footprint. Furthermore, the second radiating branch of the second antenna is designed with breakpoints, enabling the transmission and reception of signals in at least two different operating frequency bands.

[0017] In some possible embodiments of the first aspect, the first radiator further includes a first open branch, and the first open branch is connected to the first feeding point or the first radiation loop.

[0018] Therefore, in the present application, a first open branch connected to the first feeding point or the first radiation loop is further provided on the first radiator. The first open branch may not be used for coupling, but for tuning.

[0019] In some possible embodiments of the first aspect, when the first radiation ring is a closed ring structure, the first radiator also includes a third radiation branch, the third radiation branch is at least a partial conductive line of the first open branch, at least one coupling branch includes a third coupling branch, and the third radiation branch and the third coupling branch are coupled.

[0020] Therefore, in the present application, the first radiation branch is a partial conductive line of the first radiation ring, and the third radiation branch is at least a partial conductive line of the first open branch, which can increase the coupling length between the first radiator and the heater, further improve the coupling performance between the first radiator and the heater, and lead the current in the first radiator to the second area as much as possible, further reduce the influence of the metal base connected to the second substrate on the radiation performance of the first radiator, and improve the radiation performance and communication quality of the first radiator.

[0021] In some possible embodiments of the first aspect, the second antenna further includes a second open branch, and the second open branch is connected to the second feeding point or the second radiation loop.

[0022] Therefore, in the present application, a second open branch connected to the second feeding point or the second radiation loop is further provided on the second antenna. The second open branch may not be used for coupling, but for tuning.

[0023] In some possible embodiments of the first aspect, when the second radiation ring is a closed ring structure, the second antenna also includes a fourth radiation branch, the fourth radiation branch is at least a partial conductive line of the second open branch, at least one coupling branch includes a fourth coupling branch, and the fourth radiation branch and the fourth coupling branch are coupled.

[0024] Therefore, in the present application, the second radiation branch is a partial conductive line of the second radiation ring, and the fourth radiation branch is at least a partial conductive line of the second open branch, which can increase the coupling length between the second antenna and the heater, further improve the coupling performance between the second antenna and the heater, and lead the current in the second antenna to the second area as much as possible, further reduce the influence of the metal base connected to the second substrate on the radiation performance of the second antenna, and improve the radiation performance and communication quality of the second antenna.

[0025] In some possible embodiments, the antenna assembly further includes a first substrate, the first radiator and the second antenna are both disposed on the first substrate, the first substrate includes a first area and a second area, the first radiator and the second antenna are disposed in the first area, the heater is disposed in the second area, and at least one coupling branch is at least a portion of the line of the heater or an extended branch extending from the line of the heater.

[0026] Therefore, in the present application, the current of the first radiator and the second antenna can be directed to the second area of ​​the first substrate, reducing the influence of the metal base connected to the second substrate on the radiation performance of the first radiator and the second antenna, and improving the radiation performance and communication quality of the first radiator and the second antenna.

[0027] In some possible embodiments of the first aspect, the first radiator and the second antenna are respectively disposed on opposite sides of the first region of the first substrate and have different structures to achieve diversity reception.

[0028] Therefore, in the present application, the first radiator and the second antenna can achieve diversity reception and improve the omnidirectionality of the diversity pattern.

[0029] In some possible embodiments of the first aspect, the first radiator is a composite antenna, which, when excited, operates at least in the second frequency band and at least one of the first frequency band, the third frequency band, and the fourth frequency band; the second antenna is a composite antenna, which, when excited, operates at least in the second frequency band and at least one of the third frequency band and the fourth frequency band; the frequency of the first frequency band is smaller than the frequency of the second frequency band, the frequency of the second frequency band is smaller than the frequency of the third frequency band, and the frequency of the third frequency band is smaller than the frequency of the fourth frequency band.

[0030] Therefore, in this application, the first antenna and the first radiator are respectively set as composite antennas, which can operate in at least two broadcast frequency bands, have higher integration, can reduce the board area occupied by the first antenna and the first radiator, and ensure the diversification of the operating frequency bands of the first antenna and the first radiator.

[0031] In some possible embodiments of the first aspect, the antenna assembly further includes a third antenna, which operates in a fourth frequency band when excited, and is located between the second antenna and the first radiator of the first antenna.

[0032] Therefore, in this application, the third antenna is placed between the first radiator and the second antenna. Since the branches of the third antenna are shorter, it is not easy to transmit the current in the second frequency band and the current in the fourth frequency band. Therefore, the current coupling between the first radiator and the second antenna is avoided, and the isolation between the first radiator and the second antenna can be increased, thereby ensuring the omnidirectionality of the diversity radiation pattern.

[0033] In some possible embodiments of the first aspect, the antenna assembly further includes a second substrate, the first antenna further includes a second radiator and a first feed source, the second radiator is arranged on the second substrate, the first radiator and the second radiator are both connected to the first feed source for power feeding, and the frequency bands in which the first radiator and the second radiator operate when excited are at least partially different or the same.

[0034] Therefore, in the present application, radiators suitable for the working frequency bands can be respectively arranged on the first substrate and the second substrate, and the radiator of the first antenna suitable for the low-frequency band which requires a larger board area can be transferred to the second substrate, thereby avoiding the large area occupation of the first substrate by the antenna component and ensuring the defogger / defrost function of the first substrate. Moreover, when certain working frequency bands on the first radiator are greatly affected, radiators suitable for the corresponding working frequency bands can be arranged on the second substrate, thereby ensuring the communication quality of each working frequency band.

[0035] In some possible embodiments of the first aspect, when the second radiator operates in at least the first frequency band when excited, the second radiator includes a grid structure, the grid structure includes a plurality of horizontal conductive lines and at least one vertical conductive line, the plurality of horizontal conductive lines are arranged in an alternating manner, and the plurality of horizontal conductive lines and the at least one vertical conductive line are arranged in an intersecting manner; or

[0036] When the second radiator operates in at least the first frequency band and / or the second frequency band when excited, the second radiator includes a plurality of vertical conductive wires and at least one horizontal conductive wire, the plurality of vertical conductive wires are arranged at intervals, the plurality of vertical conductive wires and the at least one horizontal conductive wire are arranged crosswise, and the frequency of the first frequency band is less than the frequency of the second frequency band.

[0037] Therefore, in the present application, since the radiator suitable for the first frequency band occupies the largest area among the first, second, third and fourth frequency bands, part of the radiator suitable for the first frequency band of the first antenna can be preferentially arranged on the second substrate. This can greatly reduce the area occupied by the first antenna on the first substrate and ensure the defogger / defrost effect of the defogger / defroster.

[0038] In some possible embodiments of the first aspect, the antenna assembly further includes a metal base, the second substrate is connected to the metal base, the second radiator further includes at least one tail branch, the at least one tail branch is located on a side of the grid structure away from the metal base, each tail branch is connected to one of the vertical guide wires, and the second radiator also operates in the first frequency band, the third frequency band or the fourth frequency band when excited, the frequency of the first frequency band is less than the frequency of the third frequency band, and the frequency of the third frequency band is less than the frequency of the fourth frequency band.

[0039] Therefore, in the present application, multiple tail branches are arranged on the second radiator so that the second radiator can also act on the third or fourth frequency band. In this way, when some third frequency bands or fourth frequency bands of the first radiator are greatly affected by the surrounding metal base (for example, the metal bracket of the spoiler, the metal component of the car body), these third frequency bands or fourth frequency bands can be supplemented by the second radiator.

[0040] In some possible embodiments of the first aspect, the tail branch is an L-shaped or T-shaped structure.

[0041] Therefore, in this application, the second radiator can also operate in a second frequency band through multiple tail branches. Moreover, the second frequency band of the second radiator can be at least partially identical to the second frequency band of the first radiator. In this way, when certain second frequency bands of the first radiator are significantly affected by the metal base, the second radiator can supplement these second frequency bands. Furthermore, the first antenna is distributed on both the first and second substrates, reducing the antenna area on the first substrate and providing more than 90% of the visible area of ​​the first substrate to the heater, ensuring a defrosting / defrosting effect.

[0042] In a second aspect, the present application provides a vehicle, the vehicle including an antenna assembly, and the antenna assembly is the antenna assembly of the first aspect.

[0043] Therefore, in this application, the beneficial effects of the vehicle of the second aspect are the same as the beneficial effects of the antenna assembly of the first aspect and are not repeated here.

[0044] In some possible embodiments of the second aspect, the vehicle also includes glass, the glass is a first substrate, the first substrate includes a first area and a second area, the first radiator and the second antenna are arranged in the first area, the heater is arranged in the second area, the first radiating branch is coupled to one of the coupling branches of at least one coupling branch, and the second radiating branch is coupled to one of the coupling branches of at least one coupling branch to direct current to the second area.

[0045] Therefore, in the present application, the current in the first radiator and the second antenna can be directed to the second area of ​​the first substrate away from the second substrate through coupling, thereby reducing the influence of the metal base of the second substrate on the radiation performance of the first radiator and the second antenna, and improving the radiation performance of the first radiator and the second antenna.

[0046] In some possible embodiments of the second aspect, the vehicle also includes a spoiler, the spoiler includes a plastic shell and a metal bracket, the plastic shell is a second substrate, and the metal bracket is a metal base. When the first antenna also includes a first feed source and a second radiator, the second radiator is arranged on the second substrate, and the first radiator and the second radiator are connected to the same connection point and then connected to the first feed source for power feeding.

[0047] Thus, the space between the first and second substrates can be utilized simultaneously, allowing the second radiator of the first antenna, which requires a larger area and operates in the first and / or second frequency bands, to be placed on the second substrate. This stabilizes the antenna while avoiding the large area occupied by the antenna assembly on the first substrate, ensuring the first substrate's defogging / defrosting function. Furthermore, by placing the first and second radiators on the first and second substrates, respectively, and using the first feed source for power supply, antenna performance is improved, the area occupied by the first radiator on the first substrate is reduced, and the defogging / defrosting effect is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0049] Figure 1 Schematic diagram of the structure of the antenna assembly in an embodiment of the present application;

[0050] Figure 2 This is a schematic diagram of the specific structure of the first radiator of the first antenna in the first embodiment of the present application;

[0051] Figure 3 This is a schematic diagram of the specific structure of the first radiator of the first antenna in the second embodiment of the present application;

[0052] Figure 4 This is a schematic diagram of the specific structure of the first radiator of the first antenna in the third embodiment of the present application;

[0053] Figure 5 This is a schematic diagram of the specific structure of the second antenna in the fourth embodiment of the present application;

[0054] Figure 6 This is a schematic diagram of the specific structure of the second antenna in the fifth embodiment of the present application;

[0055] Figure 7 This is a schematic diagram of the specific structure of the second antenna in the sixth embodiment of the present application;

[0056] Figure 8 This is a schematic diagram of the specific structure of the second antenna in the seventh embodiment of the present application;

[0057] Figure 9 This is a schematic diagram of the specific structure of the second antenna in the eighth embodiment of the present application;

[0058] Figure 10 This is a schematic diagram of the specific structure of the second antenna in the ninth embodiment of the present application;

[0059] Figure 11 This is a schematic diagram of the specific structure of the second antenna in the tenth embodiment of the present application;

[0060] Figure 12 This is a schematic diagram of the specific structure of the third antenna in the eleventh embodiment of the present application;

[0061] Figure 13 This is a schematic diagram of the specific structure of the third antenna in the twelfth embodiment of the present application;

[0062] Figure 14This is a schematic diagram of the specific structure of the second radiator of the second antenna in the thirteenth embodiment of the present application;

[0063] Figure 15 14 is a schematic structural diagram of an antenna assembly in the fourteenth embodiment of the present application;

[0064] Figure 16 is the vertical polarization pattern of the FM frequency band in the second antenna and the FM frequency band in the first antenna;

[0065] Figure 17 is the horizontal polarization pattern of the FM frequency band in the second antenna and the FM frequency band in the first antenna;

[0066] Figure 18 is the vertical polarization pattern of the DAB frequency band in the second antenna and the DAB frequency band in the first antenna;

[0067] Figure 19 is the horizontal polarization pattern of the DAB frequency band in the second antenna and the DAB frequency band in the first antenna;

[0068] Figure 20 This is a schematic diagram of the modules of the vehicle in an embodiment of the present application. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0070] In the description of this application, the terms "first", "second", etc. are used to distinguish different objects rather than to describe a specific order. The terms "upper", "lower", "inner", "outer", etc. to indicate directions or positional relationships are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application.

[0071] In the description of this application, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a direct connection, an indirect connection through an intermediate medium, or internal communication between two components; it can mean a communication connection; or it can mean an electrical connection. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0072] With the rapid development of wireless communications, demands for communication quality are becoming increasingly stringent. As a common means of transportation in daily life, cars are also placing increasingly stringent demands on antennas to achieve superior signal quality. The structure, size, and installation location of car broadcast antennas significantly impact the quality of the vehicle's communication system. To achieve a "stealth" effect without detracting from the vehicle's aesthetics, broadcast antennas are often positioned above the rear windshield. Heating strips are also installed on the rear windshield to provide defogging and defrosting. Furthermore, spoilers are positioned above the rear windshield, at least partially covering the upper area. Metal brackets are installed within the spoiler to enhance structural strength. Since the broadcast antenna is located directly above the rear windshield, the presence of a metal spoiler can significantly degrade the broadcast antenna's communication quality.

[0073] To this end, the present application provides an antenna assembly, the antenna assembly comprising:

[0074] a first antenna, the first antenna comprising a first radiator, the first radiator comprising a first radiating branch and a first feeding point, the first radiating branch being connected to the first feeding point;

[0075] a second antenna, the second antenna comprising a second radiating branch and a second feeding point, the second radiating branch being connected to the second feeding point;

[0076] A heater comprising at least one coupling branch;

[0077] The first antenna and the second antenna operate in at least one same frequency band when excited;

[0078] The first radiation branch is coupled to one of the at least one coupling branch, and the second radiation branch is coupled to one of the at least one coupling branch.

[0079] Therefore, in the present application, the first radiator is coupled to the heater, and the second antenna is coupled to the heater, which can guide the current distribution of the first radiator and the second antenna, reduce the impact of the metal base on the radiation performance of the first radiator and the second antenna, and improve the radiation performance and communication quality of the first radiator and the second antenna.

[0080] Please refer to Figure 1 , Figure 1Schematic diagram of the structure of the antenna assembly 100 in the embodiment of the present application. The antenna assembly 100 includes a first substrate 200 and a second substrate 300. The first substrate 200 includes a first area 201a and a second area 202a, and the second substrate 300 is arranged adjacent to the first area 201a of the first substrate 200. In this embodiment, the first area 201a is adjacent to the top of the first substrate 200, and the second area 202a is adjacent to the bottom of the first substrate 200. The second substrate 300 is arranged on the first area 201a of the first substrate 200 and covers at least part of the area of ​​the first area 201a. It should be noted that although Figure 1 The second substrate 300 and the first substrate 200 are spaced apart, but this is for illustration only. In practice, when the first substrate 200 is a rear windshield and the second substrate 300 is a plastic shell of a spoiler, the spoiler can be located on the roof adjacent to the rear windshield and cover at least a portion of the rear windshield, i.e., the first area 201a at the top of the aforementioned first substrate 200.

[0081] In other embodiments, the first region 201a is adjacent to the bottom end of the first substrate 200, and the second region 202a is adjacent to the top end of the first substrate 200; or, the first region 201a is adjacent to the left end of the first substrate 200, and the second region 202a is adjacent to the right end of the first substrate 200, etc., which is not limited here.

[0082] In some embodiments, the first substrate 200 is made of a dielectric material, which may be, but is not limited to, a vehicle's rear windshield, skylight glass, front windshield, or side windows. In this embodiment, the first substrate 200 is a vehicle's rear windshield.

[0083] It should be noted that the first substrate 200 may be a single-layer structure, a double-layer structure or a multi-layer structure.

[0084] It should be noted that the color of the first substrate 200 is not limited.

[0085] It should be noted that the material of the first substrate 200 can be soda lime, borosilicate, aluminosilicate glass, etc., which is not limited here.

[0086] It should be noted that the top end of the first substrate 200 refers to the end of the first substrate 200 close to the vehicle roof, and the bottom end of the first substrate 200 refers to the end of the first substrate 200 close to the vehicle bottom.

[0087] It should be noted that the portion of the antenna assembly 100 disposed on the first substrate 200 may be disposed on the side of the first substrate 200 facing the interior of the vehicle or in an interlayer of the first substrate 200 .

[0088] In some embodiments, the second substrate 300 is made of a dielectric material, which may include, but is not limited to, glass, a plastic housing, or the like. In this embodiment, the spoiler includes a plastic housing, and the second substrate 300 serves as the plastic housing of the spoiler. It is understood that in other embodiments, the second substrate 300 may be made of other dielectric materials, which is not a limitation herein.

[0089] In some embodiments, the spoiler further includes a metal bracket connected to the plastic housing, for example, the plastic housing is wrapped around the outside of the metal bracket. The metal bracket is used to improve the overall structural strength of the spoiler.

[0090] In some embodiments, when the antenna assembly 100 further includes a metal base, the metal base may be a metal bracket. In other embodiments, the metal base may also be a metal structure of a vehicle body, etc., which is not limited here.

[0091] Therefore, in the present application, both the first substrate 200 and the second substrate 300 are made of dielectric materials, which can reduce the impact on the radiation performance of the first radiator 202 and the second radiator 203. The metal base is connected to the second substrate 300, and the second radiator 203 is arranged on the second substrate 300, so that the second radiator 203 has more mounting options. In addition, the spoiler with the metal bracket can be used to mount the antenna radiator, which increases the space available for the antenna radiator.

[0092] In some embodiments, the plastic shell includes a lower shell and an upper shell, the lower shell and the upper shell cooperate to form a receiving space, the metal bracket is arranged in the receiving space, and the upper shell includes a first shell and a second shell stacked together.

[0093] Please refer to Figure 1 、 Figure 2 and Figure 9 , the antenna assembly 100 includes:

[0094] A first antenna 20 , comprising a first radiator 202 , the first radiator 202 comprising a first radiating branch 204 and a first feeding point 201 , the first radiating branch 204 being connected to the first feeding point 201 ;

[0095] The second antenna 10 includes a second radiating branch 102 and a second feeding point 101, and the second radiating branch 102 is connected to the second feeding point 101;

[0096] A heater 400, wherein the heater 400 includes at least one coupling branch;

[0097] The first radiator 202 and the second antenna 10 operate in at least one same frequency band when excited;

[0098] The first radiation branch 204 is coupled to one of the at least one coupling branches, and the second radiation branch is coupled to one of the at least one coupling branches.

[0099] Thus, in the present application, the first radiator 202 is coupled to the heater 400, and the second antenna 10 is coupled to the heater 400. This coupling can guide the current distribution of the first radiator 202 and the second antenna 10, reducing the impact of the metal base connected to the second substrate 300 on the radiation performance of the first radiator 202 and the second antenna 10, thereby improving the radiation performance and communication quality of the first radiator 202 and the second antenna 10. Moreover, when excited, the first radiator 202 and the second antenna 10 operate in at least one of the same frequency bands, enabling diversity reception and improving the omnidirectionality of the diversity pattern.

[0100] In some embodiments, the first antenna 20 is a composite antenna that, when excited, can operate in at least two of a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band. The frequency of the first frequency band is lower than that of the second frequency band, the frequency of the second frequency band is lower than that of the third frequency band, and the frequency of the third frequency band is lower than that of the fourth frequency band. For example, the first frequency band can be an AM band, the second frequency band can be an FM band, the third frequency band can be a DAB band, and the fourth frequency band can be a TV band. Therefore, the first antenna 20 can be a composite antenna for the FM and AM bands, a composite antenna for the FM and TV bands, a composite antenna for the FM and DAB bands, or a radiating antenna for the FM, AM, DAB, and TV bands, etc.

[0101] In some embodiments, the second antenna 10 is a composite antenna that, when excited, operates in at least the second frequency band and at least one of the third and fourth frequency bands. In other embodiments, when excited, the second antenna 10 operates in at least two of the second, third, and fourth frequency bands. For example, the second frequency band may be the FM band, the third frequency band may be the DAB band, and the fourth frequency band may be the TV band. Therefore, the second antenna 10 may be a composite antenna for the FM and TV bands, a composite antenna for the FM and DAB bands, or a composite antenna for the FM, DAB, and TV bands. In other embodiments, when excited, the second antenna 10 may also operate in a first frequency band, where the frequency of the first frequency band is lower than that of the second frequency band. For example, the first frequency band may be the AM band.

[0102] Therefore, in the present application, the second antenna 10 is a composite antenna that can operate in at least two broadcast frequency bands and has a higher degree of integration. It can reduce the area occupied by the second antenna 10 on the first substrate 200, ensure the defog / defrost function of the first substrate 200, and ensure the diversification of the operating frequency bands of the second antenna 10.

[0103] In this embodiment, the first antenna 20 is a composite antenna for four frequency bands: FM, AM, DAB, and TV. The second antenna 10 is a composite antenna for three frequency bands: DAB, FM, and TV.

[0104] It can be understood that in other embodiments, the first antenna 20 is a composite antenna that can operate in at least two of the AM frequency band, TV frequency band and DAB frequency band when excited, and the second antenna 10 is a composite antenna that can operate in at least two of the AM frequency band, TV frequency band and DAB frequency band when excited. That is, the first antenna 20 may not operate in the FM frequency band when excited, and the second antenna 10 may not operate in the FM frequency band when excited.

[0105] It is understandable that in other embodiments, the first antenna 20 can operate in one of the FM band, AM band, TV band and DAB band when excited, that is, the first antenna 20 can also be a single-frequency antenna.

[0106] It is understandable that in other embodiments, the second antenna 10 can operate in one of the FM frequency band, AM frequency band, TV frequency band and DAB frequency band when excited, that is, the second antenna 10 can also be a single-frequency antenna.

[0107] It is understandable that in other embodiments, when one of the first antenna 20 and the second antenna 10 is excited, it only needs to operate in the AM frequency band.

[0108] Therefore, on the one hand, it can ensure that the antenna assembly 100 has the ability to transmit and receive AM frequency band signals, and on the other hand, it can improve the compactness of the antenna assembly 100 and occupy a smaller board area.

[0109] In some possible embodiments, the first radiator 202 and the second antenna 10 are both disposed on the first substrate 200, the first substrate 200 includes a first area 201a and a second area 202a, the first radiator 202 and the second antenna 10 are disposed in the first area 201a, the heater 400 is disposed in the second area 202a, and at least one coupling branch is at least a portion of the line of the heater 400 or an extended branch extending from the line of the heater 400.

[0110] Therefore, in the present application, the current of the first radiator 202 and the second antenna 10 can be directed to the second area 202a of the first substrate 200, thereby reducing the influence of the metal base connected to the second substrate 300 on the radiation performance of the first radiator 202 and the second antenna 10, and improving the radiation performance and communication quality of the first radiator 202 and the second antenna 10.

[0111] In some embodiments, the first radiator 202 is disposed adjacent to one side of the first region 201a of the first substrate 200, and the second antenna 10 is disposed adjacent to the other side of the first region 201a of the first substrate 200. The first radiator 202 and the second antenna 10 have different structures to achieve diversity reception.

[0112] Therefore, in the present application, the first radiator 202 and the second antenna 10 are spaced apart and have different structures, which can improve the omnidirectionality of the diversity pattern.

[0113] In some embodiments, the antenna assembly 100 further includes a third antenna 30, which operates in a fourth frequency band when excited and is located between the first radiator 202 of the first antenna 20 and the second antenna 10. For example, the fourth frequency band is a TV band.

[0114] Therefore, in the present application, the third antenna 30 operates in the fourth frequency band when excited. The third antenna 30 is placed between the first antenna 20 and the second antenna 10. Since the branches of the third antenna 30 are relatively short, they are less likely to transmit currents in the first, second, and third frequency bands. This prevents current coupling between the first radiator 202 of the first antenna 20 and the second antenna 10 within the first region, thereby increasing the isolation between the first radiator 202 of the first antenna 20 and the second antenna 10, and ensuring the omnidirectionality of the diversity pattern. For example, if the first antenna 20 operates in at least the second frequency band when excited, the second antenna 10 operates in at least the second frequency band when excited, and the third antenna 30 operates in the fourth frequency band when excited, placing the third antenna 30 between the first antenna 20 and the second antenna 10 prevents current coupling between the first radiator 202 of the first antenna 20 and the second antenna 10 within the first region, thereby increasing the isolation between the first radiator 202 of the first antenna 20 and the second antenna 10, and ensuring the omnidirectionality of the diversity pattern. For example, when the first antenna 20 is excited, it operates in at least the third frequency band; when the second antenna 10 is excited, it operates in at least the third frequency band; and when the third antenna 30 is excited, it operates in the fourth frequency band. Placing the third antenna 30 between the first antenna 20 and the second antenna 10 can prevent current coupling between the first radiator 202 of the first antenna 20 and the second antenna 10 in the third frequency band within the first region, thereby increasing the isolation between the first radiator 202 of the first antenna 20 and the second antenna 10 and ensuring the omnidirectionality of the diversity pattern. Furthermore, because the fourth frequency band has the shortest wavelength, the first antenna 20 and the second antenna 10 can also operate in the fourth frequency band when excited. Therefore, when the fourth frequency band is the TV band, virtually all branches of the first antenna 20, the second antenna 10, and the third antenna 30 can be used to transmit and receive signals in the fourth frequency band.

[0115] In some embodiments, the first radiator 202 of the first antenna 20 includes a first feed point 201, the second antenna 10 includes a second feed point 101, and the third antenna 30 includes a third feed point 301. The first feed point 201, the second feed point 101, and the third feed point 301 are located on the upper side of the first substrate 200. The second feed point 101 of the second antenna 10 and the third feed point 301 of the third antenna 30 are close to each other, and the center distance between the second feed point 101 of the second antenna 10 and the third feed point 301 of the third antenna 30 is 20-50 mm. The antenna assembly 100 also includes a second feed source, and the second feed point 101 of the second antenna 10 and the third feed point 301 of the third antenna 30 are connected to the second feed source for power supply. The second feed source can be, but is not limited to, an amplifier.

[0116] Therefore, the overall structural complexity of the antenna assembly 100 can be reduced, and the synchronization between the second antenna 10 and the third antenna 30 can be better.

[0117] In some other embodiments, the first feeding point 201 , the second feeding point 101 and the third feeding point 301 may be distributed at equal intervals on the upper side of the first substrate 200 , which is not limited herein.

[0118] In some embodiments, the first feeding point 201 of the first radiator 202 of the first antenna 20 and the second feeding point 101 of the second antenna 10 are symmetrically arranged with respect to the midline of the first substrate 200 .

[0119] Therefore, the overall structural complexity of the antenna assembly 100 can be reduced, and the omnidirectionality of the diversity patterns of the first antenna 20 and the second antenna 10 can be improved.

[0120] It is understandable that in other embodiments, the second feeding point 101 of the second antenna 10 and the first feeding point 201 of the first antenna 20 may be asymmetrically distributed relative to the center line of the first substrate 200, which is not limited here.

[0121] In some embodiments, the heater 400 includes a plurality of first heating wires 401, at least one second heating wire 402, and two heating busbars 403. The plurality of first heating wires 401 are spaced apart along a first direction A, and the at least one second heating wire 402 is spaced apart along a second direction B and intersects with the plurality of first heating wires 401. One heating busbar 403 connects one end of the plurality of first heating wires 401, and another heating busbar 403 connects the other ends of the plurality of first heating wires 401. In some embodiments, the first direction A is horizontal or substantially parallel to the horizontal direction, and the second direction B is vertical or substantially parallel to the vertical direction. The heating busbars 403 may extend in a direction parallel to the second direction B or may form a slight angle with the second direction B. The heating busbars 403 may be, but are not limited to, straight lines or curves, and are not limited to such.

[0122] Among them, changes in the number and position of the second heating wires 402 will change the current path and path length in the heater 400, thereby changing the gain of the second antenna 10 and / or the first antenna 20 in the DAB frequency band, which is used to adjust the gain of the first antenna 20 and the second antenna 10 in the DAB frequency band.

[0123] In some embodiments, the number of the second heating lines 402 is not less than two, and the plurality of second heating lines 402 are symmetrically arranged relative to the center line of the first substrate 200 .

[0124] In some embodiments, the first antenna 20 further includes a second radiator 203 and a first feed source 208a, wherein the first radiator 202 is disposed in the first area 201a of the first substrate 200, and the second radiator 203 is disposed on the second substrate 300. The first radiator 202 and the second radiator 203 are both connected to the first feed source 208a for power feeding. The frequency bands in which the first radiator 202 and the second radiator 203 operate when excited are at least partially different, or the frequency bands in which the first radiator 202 and the second radiator 203 operate when excited are at least partially the same.

[0125] Therefore, in the present application, radiators suitable for the operating frequency bands can be disposed on the first substrate 200 and the second substrate 300, respectively. The radiator of the first antenna 20 suitable for the low-frequency band, which requires a larger board area, can be relocated to the second substrate 300. This avoids the antenna assembly 100 occupying a large area of ​​the first substrate 200 and ensures the defogging / defrosting function of the first substrate 200. Furthermore, when certain operating frequency bands on the first radiator 202 are significantly affected, radiators suitable for the corresponding operating frequency bands can be disposed on the second substrate 300, thereby ensuring communication quality in each operating frequency band. Furthermore, at least the first antenna 20 and the first radiator 202 can be disposed on the vehicle's glass, while the second radiator 203 can be disposed on the plastic housing of the spoiler. Thus, at least part of the radiators suitable for the first and / or second frequency bands, which require a larger board area, can be disposed on the plastic housing of the spoiler, avoiding the antenna assembly 100 occupying a large area of ​​the vehicle's glass and ensuring the defogging / defrosting function of the vehicle's glass.

[0126] In some embodiments, the first radiator 202 and the second radiator 203 are both connected to the first feed source 208a for power feeding. This may be, but is not limited to, connecting the first feed line 2021 of the first radiator 202 and the second feed line 2031 of the second radiator 203 to the same connection point C, and then connecting to the first feed source 208a for power feeding. For example, the first radiator 202 may have the first feed line 2021 soldered to a pad, and the second radiator 203 may have the second feed line 2031 connected to a connector. The first feed line 2021 and the second feed line 2031 may be crimped together, and then connected to the input end of the first feed source 208a through a single feed line. The first feed source 208a may be an amplifier.

[0127] In some embodiments, the first radiator 202 can operate in at least one of a first frequency band and a second frequency band when excited. When the first antenna 20 can operate in the first frequency band when excited, the radiator of the first antenna 20 adapted to operate in the first frequency band can be entirely disposed on the second substrate 300, or a portion can be disposed on the second substrate 300 and the remaining portion can be disposed on the first substrate 200. When the first antenna 20 can operate in the second frequency band when excited, the radiator of the first antenna 20 adapted to operate in the second frequency band can be entirely disposed on the second substrate 300, or a portion can be disposed on the second substrate 300 and the remaining portion can be disposed on the first substrate 200.

[0128] Therefore, since the radiators suitable for the first frequency band and the second frequency band occupy a larger board area, some radiators suitable for the first frequency band and the second frequency band in the first antenna 20 can be arranged on the second substrate 300, which can greatly reduce the board area occupied by the first antenna 20 on the first substrate 200 and ensure the defogger / defrost function of the first substrate 200.

[0129] In some embodiments, the second radiator 203 occupies a larger area on the second substrate 300 than the first radiator 202 occupies an area on the first substrate 200 .

[0130] Therefore, in the present application, since the first antenna 20 is a composite antenna, the radiator in the first antenna 20 suitable for the medium and low frequency bands can be preferentially arranged on the second substrate 300, which can greatly reduce the area occupied by the first antenna 20 on the first substrate 200 and ensure the defogger / defrost function of the first substrate 200.

[0131] In some embodiments, the first radiator 202 of the first antenna 20, the second antenna 10 and the third antenna 30 can be provided on the first substrate 200 by silver paste printing. The second radiator 203 of the first antenna 20 is an FPC antenna provided between the first housing and the second housing.

[0132] Therefore, the second antenna 10 on the first substrate 200, the first radiator 202 of the first antenna 20 and the third antenna 30 can be printed by silver paste printing or the like. The second radiator 203 of the first antenna 20 on the second substrate 300 can be set as an FPC antenna and arranged between the first shell and the second shell of the second substrate 300 to simplify the processing technology.

[0133] In some embodiments, the first and second housings are positioned with positioning holes and positioning protrusions, and the FPC antenna is located between the first and second housings and positioned with the positioning holes and positioning protrusions. In other embodiments, the second radiator can be bonded between the first and second housings, or bonded to the first or second housing using adhesive.

[0134] Therefore, the method of fixing the FPC antenna on the second substrate 300 can be further simplified.

[0135] Please refer to Figure 2 , Figure 2 FIG. 1 is a schematic diagram illustrating the specific structure of the first radiator 202 of the first antenna 20 in the first embodiment of the present application. The first radiator 202 includes a first radiating loop 2021a. The first radiating branch 204 is at least partially a conductive line of the first radiating loop 2021a. The at least one coupling branch includes a first coupling branch 206. The first radiating branch 204 is coupled to the first coupling branch 206.

[0136] The first radiation ring 2021a is a closed ring structure.

[0137] Therefore, in the present application, the total length of the conductive line of the first radiator 202 can be effectively increased and the board area occupied by the first radiator 202 can be reduced through the first radiation ring 2021a. In addition, the first radiation branch 204 is at least part of the conductive line of the first radiation ring 2021a, which can be coupled with the first coupling branch 206, thereby improving the structural compactness of the first radiator 202 and reducing the board area occupied by the first radiator 202.

[0138] In some other embodiments, a breakpoint is provided on the first radiation branch 204 of the first radiation ring 2021 a.

[0139] Therefore, by designing the breakpoints of the first radiation branch 204 of the first radiation ring 2021 a , it is possible to transmit and receive signals in at least two different operating frequency bands.

[0140] Specifically, the first coupling structure 208 formed between the first radiation branch 204 and the first coupling branch 206 can direct the current in the first radiator 202 to the second region 202a as much as possible, further reducing the influence of the metal base connected to the second substrate 300 on the radiation performance of the first radiator 202.

[0141] In some embodiments, the first radiator 202 further includes a first open branch 2022 , and the first open branch 2022 is connected to the first feeding point 201 or the first radiating loop 2021 a .

[0142] Therefore, in the present application, a first open branch 2022 connected to the first feeding point 201 or the first radiation loop 2021 a is further provided on the first radiator 202 . The first open branch 2022 can be used for coupling and tuning.

[0143] In some embodiments, when the first radiation ring 2021a is a closed ring structure, the first radiator 202 also includes a third radiation branch 205, the third radiation branch 205 is at least a partial conductive line of the first open branch 2022, and at least one coupling branch includes a third coupling branch 207, and the third radiation branch 205 and the third coupling branch 207 are coupled.

[0144] Specifically, a third coupling structure 209 is formed between the third radiation branch 205 and the third coupling branch 207 .

[0145] Therefore, in the present application, the first radiation branch 204 is a partial conductive line of the first radiation ring 2021a, and the third radiation branch 205 is at least a partial conductive line of the first open branch 2022, which can increase the coupling length between the first radiator 202 and the heater 400, further improve the coupling performance between the first radiator 202 and the heater 400, and lead the current in the first radiator 202 to the second area 202a as much as possible, further reduce the influence of the metal base connected to the second substrate 300 on the radiation performance of the first radiator 202, and improve the radiation performance and communication quality of the first radiator 202.

[0146] like Figure 2 As shown, first radiator 202 is a composite antenna that, when excited, operates in at least the second frequency band and at least one of the first, third, and fourth frequency bands. For example, the second frequency band is the FM band, the third frequency band is the DAB band, and the fourth frequency band is the TV band. Alternatively, first radiator 202 is a single-frequency antenna, and the specific design can be determined based on actual needs.

[0147] like Figure 2As shown, the first coupling branch 206 is a first extension branch 4032 of one of the second heating wires 402 or one of the heating busbars 403 , and the third coupling branch 207 is the first first heating wire 401 from top to bottom among the multiple first heating wires 401 .

[0148] In the first embodiment, the specific structure of the first radiator 202 is as follows:

[0149] A first conductive line 2011 extends downward from the first feeding point 201, with a length of 50-90 mm. At approximately the midpoint of the first conductive line 2011, a first conductive branch line 2012, a second conductive branch line 2013, and a third conductive branch line 2015 extend to the right. The first conductive branch line 2012 and the second conductive branch line 2013 are both 180-220 mm long in the horizontal direction and are connected at the rightmost end to form a loop. The third conductive branch line 2015 is 80-120 mm long. The third conductive branch line 2015 is parallel to the first heating line 401 of the heater 400, with a spacing of 1-5 mm, forming a coupling structure, namely, a third coupling structure 209, which operates simultaneously in the FM band or the DAB band. A branch extends from the upper end of the heating busbar 403 on the right side of the heater 400. This branch extends upward and bends leftward 1-5 mm below the lower end of the second conductive branch 2013, extending parallel to the second conductive branch 2013. The total length of the branch is 300-350 mm, and the coupling length is 150-200 mm, forming another coupling structure, namely the first coupling structure 208, which primarily operates in the FM band. The branch consists of a vertical portion extending from the heating busbar 403 and a horizontal portion connected to the vertical portion. The horizontal portion of the branch is the first extension branch 4032. The first coupling structure 208 effectively extends the current path of the first antenna 20 to the right, away from the metal base's covered area, thereby improving the radiation capability of the first radiator 202. Moreover, the first coupling structure 208 and the third coupling structure 209 of the first radiator 202 in the first embodiment and the second coupling structure 105 and the fourth coupling structure 106 of the second antenna 10 in the eighth embodiment described later are asymmetrically distributed on the first substrate 200, thereby avoiding the situation where the directional patterns of the second antenna 10 and the first radiator 202 are similar, thereby ensuring the omnidirectionality of the diversity directional pattern.

[0150] It is understandable that Figure 2 There are two sets of coupling structures between the first radiator 202 and the heater 400. Figure 9 There are two sets of coupling structures between the second antenna 10 and the heater 400. It is understood that in other embodiments, there may be one or more sets of coupling structures between the first radiator 202 and the heater 400, and one or more sets of coupling structures between the second antenna 10 and the heater 400, which is not limited here.

[0151] Please refer to Figure 3 , Figure 3 2 is a schematic diagram of the specific structure of the first radiator 202 of the first antenna 20 in the second embodiment of the present application. The structure of the first radiator 202 of the first antenna 20 in the second embodiment is similar to that of the first radiator 202 of the first antenna 20 in the first embodiment, except that, in the second embodiment, the first radiator 202 further includes a third open branch 2023, which is arranged horizontally, disposed inside the first radiating loop 2021a, and connected to the left side of the first radiating loop 2021a.

[0152] Therefore, the third open branch 2023 facilitates tuning of the first radiator 202 of the first antenna 20 or adjustment of the gain of the first radiator 202 of the first antenna 20 .

[0153] Please refer to Figure 4 , Figure 4 2 is a schematic diagram of the specific structure of the first radiator 202 of the first antenna 20 in the third embodiment of the present application. The first radiator 202 of the first antenna 20 in the third embodiment has a similar structure to that of the first radiator 202 of the first antenna 20 in the first embodiment. The difference is that in the third embodiment, there are two first extension branches 4032 extending from the same right heating busbar 403, namely the first coupling branch 206 and the third coupling branch 207. That is, the first coupling branch 206 and the third coupling branch 207 extend from the same right heating busbar 403 and are arranged in parallel. The first radiating branch 204 of the first radiator 202 is coupled with one of the first extension branches 4032 to form a first coupling structure 208, and the third radiating branch 205 of the first radiator 202 is coupled with another of the first extension branches 4032 to form a third coupling structure 209. Therefore, the first radiator 202 of the first antenna 20 does not need to be arranged near the first first heating line 401 from the top to the bottom adjacent to the heater 400 for coupling, which provides greater flexibility in the design position of the first radiator 202 of the first antenna 200.

[0154] Thus, the first coupling branch 206 and the third coupling branch 207 are respectively two first extension branches 4032 extending from the same second heater 400, or two first extension branches 4032 extending from the same heating bus 403. The first radiator 202 does not need to be arranged near the first first heating line 401 from top to bottom adjacent to the heater 400 in order to couple with the heater 400, and the choice of the design position of the first radiator 202 will be more flexible.

[0155] Please refer to Figure 5 , Figure 51 is a schematic diagram of the specific structure of the second antenna 10 in the fourth embodiment of the present application. The second antenna 10 includes a second radiating loop 107, a second radiating branch 102 being at least partially conductive line of the second radiating loop 107, and at least one coupling branch including a second coupling branch 104, wherein the second radiating branch 102 is coupled to the second coupling branch 104.

[0156] A breakpoint 1072 is defined on the second radiation branch 102 of the second radiation ring 107 .

[0157] Thus, in the present application, the second radiating loop 107 can effectively increase the total length of the conductive line of the second antenna 10 and reduce the board area occupied by the second antenna 10. In addition, the second radiating branch 102, which is at least part of the conductive line of the second radiating loop 107, can be coupled with the second coupling branch 104, thereby improving the structural compactness of the second antenna 10 and reducing the board area occupied by the second antenna 10. Moreover, the second radiating branch 102 of the second radiating loop 107 is designed with a breakpoint, which can realize the transmission and reception of signals in at least two different operating frequency bands.

[0158] Specifically, please refer to Figure 5 The second radiation ring 107 is a square ring structure formed by a conductive wire. The second radiation ring 107 includes a first edge 1071. A breakpoint 1072 is provided on the first edge 1071. The second radiation ring 107 is a non-closed C-shaped square ring due to the existence of the breakpoint 1072. The second radiation branch 102 is the first edge 1071. Therefore, the second radiation branch 102 of the second radiation ring 107 is designed with a breakpoint, and a second coupling structure 105 and a fourth coupling structure 106 are formed between the second radiation branch 102 and the second coupling branch 104.

[0159] In some embodiments, the breakpoints 1072 are spaced apart by a length of 1-5 mm.

[0160] Therefore, the breakpoint interval is 1-5 mm, which can ensure the length of the second radiation branch 102 and the fourth radiation branch 103 and the isolation between the second radiation branch 102 and the fourth radiation branch 103.

[0161] Specifically, if Figure 5As shown, the specific structure of the second antenna 10 in the fourth embodiment is as follows: a second conductive line 1011 is led downward from the second feeding point 101, with a length of 50-90 mm, and a fourth conductive branch line 1012 and a fifth conductive branch line 1013 are led to the left at approximately the midpoint of the second conductive line 1011. The fourth conductive branch line 1012 is located between the second feeding point 101 and the fifth conductive branch line 1013, wherein the fifth conductive branch line 1013 is 80-130 mm long, and the fourth conductive branch line 1012 is bent downward and then to the right at 200-260 mm, so that The tail end of the fourth conductive branch 1012 is opposite to the fifth conductive branch 1013 and is spaced apart to form a second radiation ring 107, wherein the second radiation ring 107 is surrounded by the fourth conductive branch 1012, the fifth conductive branch 1013 and part of the conductive line of the second conductive line 1011, and since the tail end of the fourth conductive branch 1012 is opposite to the fifth conductive branch 1013 and is spaced apart to form a breakpoint 1072, the second radiation ring 107 is a C-shaped ring, and the interval between the breakpoint 1072 between the fourth conductive branch 1012 and the fifth conductive branch 1013 is 1-5 mm. The second heating line 402 extends upward from the second region 202a and bends rightward 1-5 mm below the fourth conductive branch 1012 and the fifth conductive branch 1013 to form a second extension branch 1016. The second extension branch 1016 forms a double coupling with the tail end of the fourth conductive branch 1012 and the fifth conductive branch 1013, forming a second coupling structure 105 and a fourth coupling structure 106 respectively. The coupling length of the second coupling structure 105 is 30-50 mm, that is, the coupling length of the fifth conductive branch 1013 and the second extension branch 1016 is 80-120 mm, that is, the coupling length of the fourth coupling structure 106 is 80-120 mm. The second coupling structure 105 and the fourth coupling structure 106 respectively function in the FM (coupling at the tail end of the fourth conductive branch 1012) and DAB (coupling at the fifth conductive branch 1013) frequency bands.

[0162] Among them, in some of the aforementioned embodiments, Figure 5 As shown, the first edge 1071 is the bottom edge of the second radiation ring 107, where the bottom edge is the edge of the second radiation ring 107 closer to the bottom end of the first substrate 200. That is, the first edge 1071 includes the tail end of the fourth conductive branch line 1012 and the fifth conductive branch line 1013, and the tail end of the fourth conductive branch line 1012 and the fifth conductive branch line 1013 form the second radiation branch node 102. It will be understood that in other embodiments, the first edge 1071 may be the left edge or top edge of the second radiation ring 107.

[0163] Please refer to Figure 6 , Figure 6Schematic diagram of the specific structure of the second antenna 10 in the fifth embodiment of the present application. Figure 6 As shown, the first side 1071 may be the top side of the second radiation ring 107. The second heating line 402 of the heater 400 extends upward above the first side 1071 and couples with the second radiation branch 102 to form the second coupling structure 105 and the fourth coupling structure 106 respectively.

[0164] Please refer to Figure 7 , Figure 7 Schematic diagram of the specific structure of the second antenna 10 in the sixth embodiment of the present application. Figure 7 As shown, the first side 1071 may be the left side of the second radiation ring 107. The second heating line 402 of the heater 400 extends upward to the left side of the first side 1071 and couples with the second radiation branch 102 to form the second coupling structure 105 and the fourth coupling structure 106 respectively.

[0165] like Figures 5 to 7 As shown, the second radiation branch 102 is coupled with one of the second heating wires 402 or the second extension branch 1016 of the heating busbar 403 of the heater 400 to form a second coupling structure 105 and a fourth coupling structure 106 respectively. Figure 5 As shown, the second radiation branch 102 is located on the bottom edge of the second radiation ring 107, and the second radiation branch 102 is coupled with one of the second heating wires 402 or the second extension branch 1016 of the heating busbar 403 of the heater 400 to form a second coupling structure 105 and a fourth coupling structure 106 respectively. Figure 6 As shown, the second radiation branch 102 is located on the top edge of the second radiation ring 107, and the second radiation branch 102 is coupled with one of the second heating wires 402 or the second extension branch 1016 of the heating busbar 403 of the heater 400 to form a second coupling structure 105 and a fourth coupling structure 106 respectively. Figure 7 As shown, the second radiating branch 102 is located on the left side of the second radiating ring 107. The second radiating branch 102 is coupled with one of the second heating wires 402 or the second extension branch 1016 of the heating busbar 403 of the heater 400 to form a second coupling structure 105 and a fourth coupling structure 106, respectively. It will be understood that in other embodiments, the two branch segments of the second radiating branch 102 may not be collinear but may be arranged in parallel.

[0166] Thus, the second radiation branch 102 is simultaneously coupled with the second extension branch 1016 of one of the second heating lines 402 or the second extension branch 1016 of one of the heating busbars 403 to form a second coupling structure 105 and a fourth coupling structure 106, respectively. The structure is simple and more compact. While ensuring the coupling performance between the second antenna 10 and the heater 400, the area occupied by the second antenna 10 on the first substrate 200 is further reduced.

[0167] Please refer to Figure 8 , Figure 8 Schematic diagram of the specific structure of the second antenna 10 in the seventh embodiment of the present application. The second antenna 10 in the seventh embodiment is similar in structure to the second antenna 10 in the fourth to sixth embodiments, that is, the second radiation ring 107 is also a C-shaped square ring. The difference between the second antenna 10 in the seventh embodiment and the second antenna 10 in the fourth to sixth embodiments is that the second antenna 10 further includes a second open branch 109, which is connected to the second feeding point 101 or the second radiation ring 107. The second open branch 109 may not be coupled to the heater 400, but may be used to tune or adjust the gain of the second antenna 10. Figure 8 As shown, the second open branch 109 is L-shaped. It is understandable that in other embodiments, the second open branch 109 may also be in an inverted T-shape, which is not limited here.

[0168] In some embodiments, when the second radiation ring 107 is a closed ring structure, the second antenna 10 also includes a fourth radiation branch 103, the fourth radiation branch 103 is at least a partial conductive line of the second open branch 109, and at least one coupling branch includes a fourth coupling branch 110, and the fourth radiation branch 103 and the fourth coupling branch 110 are coupled.

[0169] Therefore, in the present application, the second radiation branch 102 is a partial conductive line of the second radiation ring 107, and the fourth radiation branch 103 is at least a partial conductive line of the second open branch 109, which can increase the coupling length between the second antenna 10 and the heater 400, further improve the coupling performance between the second antenna 10 and the heater 400, and lead the current in the second antenna 10 to the second area 202a as much as possible, further reduce the influence of the metal base connected to the second substrate 300 on the radiation performance of the second antenna 10, and improve the radiation performance and communication quality of the second antenna 10.

[0170] Specifically, please refer to Figure 9 , Figure 9The figure is a schematic diagram of the specific structure of the second antenna 10 in the eighth embodiment of the present application. The second antenna 10 in the eighth embodiment has a similar structure to the second antenna 10 in the fourth to seventh embodiments, except that in the eighth embodiment, the second radiating loop 107 is a closed square ring structure with no breakpoints on any of its four sides. The second antenna 10 also includes a second open branch 109. The second open branch 109 is connected to the vertex of the second radiating loop 107 on the side facing away from the second feed point 101. The second radiating branch 102 is at least partially conductive in the second radiating loop 107, and the fourth radiating branch 103 is at least partially conductive in the second open branch 109. The second coupling branch 104 is a second extension branch 1016 of one of the second heating lines 402 or a second extension branch 1016 of one of the heating busbars 403. The fourth coupling branch 110 is the first first heating line 401 from the top down among the multiple first heating lines 401. It is understandable that in other embodiments, the structure of the second antenna 10 can be adjusted based on actual needs, which is not limited here.

[0171] Thus, the second radiating branch 102 can serve as the bottom edge of the second radiating ring 107, and the fourth radiating branch 103 can be arranged parallel to but not collinear with the second radiating branch 102. Compared to the second radiating branch 102 in the fourth to seventh embodiments, the second and fourth radiating branches 102 and 103 in the eighth embodiment are longer, thereby achieving better coupling with the heater 400. This directs the current within the second antenna 10 to the second region 202a as much as possible, further reducing the impact of the second substrate 300 on the second radiation performance of the second antenna 10. The second coupling branch 104 and the fourth coupling branch 110 are located in different regions of the heater 400, respectively, directing the current of the second antenna 10 to different locations in the second region 202a. This results in a more uniform current distribution, further improving the radiation performance of the second antenna 10. Furthermore, the direct coupling length between the second antenna 10 and the heater 400 can be increased, while maintaining a simple structure and facilitating design.

[0172] like Figure 9 As shown, the second coupling branch 104 is coupled with the second radiation branch 102 to form a second coupling structure 105 , and the fourth coupling branch 110 is coupled with the fourth radiation branch 103 to form a fourth coupling structure 106 .

[0173] like Figure 9 As shown, the second open branch 109 is L-shaped. It is understandable that in other embodiments, the second open branch 109 may also be in an inverted T-shape, which is not limited here.

[0174] Please refer to Figure 10 , Figure 10Schematic diagram of the specific structure of the second antenna 10 in the ninth embodiment of the present application. The structure of the second antenna 10 in the ninth embodiment is similar to that of the second antenna 10 in the eighth embodiment, except that the second open branch 109 of the second antenna 10 in the ninth embodiment can be directly connected to the second feeding point 101, and correspondingly, the second radiation ring 107 can also be directly connected to the second feeding point 101. Thus, the structure of the second antenna 10 is more compact. The second open branch 109 is used to tune or adjust the gain of the second antenna 10. Among them, the second radiation branch 102 is the bottom edge of the second radiation ring 107, and the second coupling branch 104 is the second extension branch 1016 coupling of one of the second heating lines 402 or the second extension branch 1016 of one of the heating busbars 403.

[0175] The second open branch 109 may be in an inverted L-shape, a T-shape, etc., which is not limited here.

[0176] In another embodiment, the second open branch 109 may be replaced by a loop structure, which is not limited here.

[0177] Furthermore, the structure of the second antenna 10 in the ninth embodiment differs from that of the second antenna 10 in the eighth embodiment in that only one coupling structure is formed between the second antenna 10 in the ninth embodiment and the heater 400. It is understood that in other embodiments, three or more coupling structures may be formed between the second antenna 10 and the heater 400, and this is not limited here.

[0178] Please refer to Figure 11 , Figure 11 This is a schematic diagram of the specific structure of the second antenna 10 in the tenth embodiment of the present application. The second antenna 10 in the tenth embodiment has a similar structure to the second antenna 10 in the eighth embodiment, except that, in the ninth embodiment, there are two second extension branches 1016 extending from the same second heating wire 402 or heating busbar 403. The second coupling branch 104 of the second antenna 10 couples with one of the second extension branches 1016 to form a second coupling structure 105, and the fourth coupling branch 110 of the second antenna 10 couples with another of the second extension branches 1016 to form a fourth coupling structure 106. Therefore, the second antenna 10 does not need to be positioned near the first first heating wire 401 from top to bottom adjacent to the heater 400 for coupling, providing greater flexibility in the design location of the second antenna 10. The aforementioned second coupling branch 104 and fourth coupling branch 110 correspond to the two second extension branches 1016.

[0179] Please refer to Figure 12 , Figure 12 FIG. 1 is a schematic diagram of the specific structure of the third antenna 30 in the eleventh embodiment of the present application. The third antenna 30 is a TV antenna.

[0180] The specific structure of the third antenna 30 is as follows:

[0181] A third conductive line 3011 with a length of 50-90 mm is led downward from the third feeding point 301. A sixth conductive branch line 3012 and a seventh conductive branch line 3013 are led to the right at approximately the bisection point of the third conductive line 3011. The length of the sixth conductive branch line 3012 is 70-100 mm, and the length of the seventh conductive branch line 3013 is 100-150 mm. These can form two resonance points and broaden the gain bandwidth.

[0182] Please refer to Figure 13 , Figure 13 FIG1 is a schematic diagram of the specific structure of the third antenna 30 in the twelfth embodiment of the present application. The third antenna 30 is a TV antenna.

[0183] The third antenna 30 in the twelfth embodiment has a similar structure to the third antenna 30 in the eleventh embodiment, except that in the twelfth embodiment, the third conductive line 3011 continues to extend downward from the seventh conductive branch line 3013 to form a fourth open branch 3014 .

[0184] Therefore, three resonance points can be formed by the sixth conductive branch 3012 , the seventh conductive branch 3013 and the fourth open branch 3014 , further widening the gain bandwidth.

[0185] In some embodiments, when the second radiator 203 operates in at least the first frequency band when excited, the second radiator 203 includes a grid structure 2031a0, the grid structure 2031a0 includes a plurality of horizontal conductive lines 2031a and at least one vertical conductive line 2031b, the plurality of horizontal conductive lines 2031a are arranged in an alternating manner, and the plurality of horizontal conductive lines 2031a and the at least one vertical conductive line 2031b are arranged in a cross-arranged manner; or

[0186] When the second radiator 203 operates in at least the first frequency band and / or the second frequency band when excited, the second radiator 203 includes multiple vertical conductive wires 2031b and at least one horizontal conductive wire 2031a, the multiple vertical conductive wires 2031b are arranged at intervals, and the multiple vertical conductive wires 2031b and the at least one horizontal conductive wire 2031a are arranged crosswise, wherein the frequency of the first frequency band is lower than the frequency of the second frequency band.

[0187] Therefore, in the present application, since the radiator suitable for the first frequency band occupies the largest area among the first frequency band, the second frequency band, the third frequency band and the fourth frequency band, the radiator part of the first antenna 20 suitable for the first frequency band can be preferentially arranged on the second substrate 300, which can greatly reduce the area occupied by the first antenna 20 on the first substrate 200 and ensure the defogging / defrosting effect of the heater 400.

[0188] Specifically, please refer to Figure 14 , Figure 14 Schematic diagram of the specific structure of the second radiator 203 of the first antenna 20 in the thirteenth embodiment of the present application. Figure 14 As shown, the second radiator 203 includes a grid structure 2031a0, which includes multiple horizontal conductive wires 2031a and multiple vertical conductive wires 2031b. The multiple horizontal conductive wires 2031a are arranged at intervals, and the multiple vertical conductive wires 2031b are arranged at intervals. The multiple horizontal conductive wires 2031a and the multiple vertical conductive wires 2031b are arranged in a cross-arranged manner. When the first antenna 20 is excited, the grid structure 2031a0 acts on at least the first frequency band. It is understandable that the number of horizontal conductive wires 2031a and the number of vertical conductive wires 2031b are not limited to Figure 5 The number shown is not specific. In fact, the number of the horizontal conductive lines 2031a and the number of the vertical conductive lines 2031b can be one or more, which can ensure that the grid structure 2031a0 can act on the first frequency band.

[0189] Therefore, in this embodiment, since the radiator suitable for the first frequency band occupies the largest area among the first frequency band, the second frequency band, the third frequency band and the fourth frequency band, the radiator of the first antenna 20 suitable for the first frequency band can be preferentially arranged on the second substrate 300, which can greatly reduce the first antenna.

[0190] like Figure 14 As shown, in some embodiments, the second radiator 203 also includes at least one tail branch 2032, at least one tail branch 2032 is located on the side of the grid structure 2031a0 away from the metal base, each tail branch 2032 is connected to one of the first conductive lines 2011, and the second radiator 203 can also operate in the third frequency band and / or the fourth frequency band when excited, the frequency of the third frequency band is greater than the frequency of the second frequency band, and the frequency of the fourth frequency band is greater than the frequency of the third frequency band.

[0191] Therefore, in the present application, a plurality of tail branches 2032 are arranged on the second radiator 203, so that the second radiator 203 can also act on the third frequency band and / or the fourth frequency band. In this way, when the third frequency band and / or the fourth frequency band of the first radiator 202 are greatly affected by the surrounding metal base (for example, the metal bracket of the spoiler, the metal component of the car body), these third frequency bands and / or fourth frequency bands can be supplemented by the second radiator 203.

[0192] The overall layout of the second radiator 203 is based on the first requirement of being away from the surrounding metal structures (for example, the metal bracket of the spoiler, the metal components of the vehicle body), and the conductive wire ( Figure 5The lowermost conductive line in Figure 5 The second radiator 203 is provided with branches of different lengths, i.e., multiple tail branches 2032, to realize the antenna functions of FM band, DAB band, and TV band. The rest of the second radiator 203 is arranged in a grid pattern to maximize the antenna function of the AM band under the environment of the second substrate 300.

[0193] like Figure 14 As shown, in some embodiments, the tail end branch 2032 is L-shaped or T-shaped. Specifically, the leftmost tail end branch 2032 is L-shaped, the middle tail end branch 2032 is T-shaped, and the left and right tail end branches 2032 are inverted L-shaped.

[0194] Thus, through the multiple tail branches 2032, the second radiator 203 can also operate in the FM frequency band. Moreover, the FM frequency band of the second radiator 203 can be at least partially identical to the FM frequency band of the first radiator 202. In this way, when certain FM frequency bands of the first radiator 202 are significantly affected by the metal base, the second radiator 203 can supplement these FM frequency bands. Furthermore, the first antenna 20 is distributed on both the first substrate 200 and the second substrate 300, reducing the antenna area on the first substrate 200 and providing more than 90% of the visible area of ​​the first substrate 200 to the heater 400, ensuring a defrosting / defrosting effect.

[0195] It should be noted that almost all conductive wires or conductive branches of the first antenna 20, the second antenna 10, and the third antenna 30 can be used to receive signals in the TV band. Because the wavelength of the TV band is relatively short, the lengths of most conductive wires or conductive branches of the first antenna 20, the second antenna 10, and the third antenna 30 are multiples of the theoretical length of the TV band, where the theoretical length of the TV band is λ / 4. λ is the wavelength of the TV antenna in the glass medium.

[0196] In some embodiments, the first antenna 20, the second antenna 10, and the third antenna 30 can all be monopole antennas, with a theoretical length of λ / 4. Wavelength λ = C1 / f; C1 = C / (εμ)1 / 2; C1 is the transmission speed of the antenna signal in glass, f is the antenna frequency, C is the speed of light, ε is the relative dielectric constant of glass, calculated here as 7.3, and μ is the relative magnetic permeability of glass, typically 1.

[0197] The FM frequency band is 76MHz-108MHz, with a wavelength λ1 of 1462mm-1029mm; the DAB frequency band is 170MHz-240MHz; the wavelength λ2 is 653mm-463mm; the TV antenna frequency band is 470MHz-710MHz; the wavelength λ3 is 236mm-156mm; the AM antenna frequency band is 530kHz-1710kHz; and the wavelength λ4 is 210m-65m. The actual antenna effective length for each frequency band is a multiple of λ / 4. Due to the influence of the surrounding metal environment, the wavelength is somewhat reduced, with the reduction factor k being approximately 0.8.

[0198] Please refer to Figure 15 , Figure 15 Schematic diagram of the structure of the antenna assembly 100 in the fourteenth embodiment of the present application. It can be understood that the antenna assembly 100 focuses on isolating the second antenna 10 and the first antenna 20 with the third antenna 30 (TV antenna). The structures of the second antenna 10 and the first antenna 20 are not limited to those in the first to thirteenth embodiments. However, the second antenna 10 and the first antenna 20 must have at least one set of coupling structures with the heater 400, for example, Figure 15 As shown, a coupling structure is formed between the second antenna 10 and the first second heating wire 402 on the left side of the heater 400 , and a coupling structure is formed between the first radiator 202 of the first antenna 20 and the first first heating wire 401 from top to bottom of the heater 400 .

[0199] In some embodiments, the second heating wire 402 is further provided with a terminal branch 4025 on the side facing away from the antenna assembly 100. The terminal branch 4025 is used to adjust the antenna gain and current path. However, it should be noted that the terminal branch 4025 on the side facing away from the antenna assembly 100 can be omitted.

[0200] In some embodiments, when the first antenna 20 is excited and does not operate in the AM frequency band, the first antenna 20 may also adopt a structure composed of the first substrate 200 and the second substrate 300, which still helps to decompose the performance of the antenna assembly 100. Figure 15 As shown, when the first antenna 20 is excited and does not work in the AM band, the first radiator 202 of the first antenna 20 is a structure of a conductive wire combined with multiple conductive branches, and the second radiator 203 of the first antenna 20 is a structure of a conductive wire combined with L-shaped open branches. The combined structure of the first radiator 202 and the second radiator 203 can work in the FM band, DAB band or TV band.

[0201] Please refer to Figure 16 and Figure 17 , Figure 16is the vertical polarization pattern of the FM band in the second antenna 10 and the FM band in the first antenna 20, Figure 17 is the horizontal polarization pattern of the FM frequency band in the second antenna 10 and the FM frequency band in the first antenna 20. Figure 16 and Figure 17 In the example, the FM frequency band of the second antenna 10 and the resonance point of the second FM antenna are 86 MHz. Figure 16 It can be seen that the FM frequency band of the second antenna 10 and the second FM antenna are complementary at most positions in the vertical plane. Figure 17 It can be seen that the FM frequency bands in the second antenna 10 and most positions of the second FM antenna in the horizontal plane are complementary, and the diversity pattern has good omnidirectionality.

[0202] Please refer to Figure 18 and Figure 19 , Figure 18 is the vertical polarization pattern of the DAB frequency band in the second antenna 10 and the DAB frequency band of the first antenna 20, Figure 19 is the horizontal polarization pattern of the DAB frequency band in the second antenna 10 and the DAB frequency band in the first antenna 20. Figure 18 and Figure 19 In the example, the resonance point of the first DAB antenna and the second DAB antenna is 206 MHz. Figure 18 It can be seen that the first DAB antenna and the second DAB antenna are complementary in most positions in the vertical plane. Figure 19 It can be seen that the first DAB antenna and the second DAB antenna are complementary at most positions in the horizontal plane, and the diversity pattern has good omnidirectionality.

[0203] Please refer to Figure 20 , Figure 20 FIG. 1 is a schematic diagram of a vehicle 1000 according to an embodiment of the present application. The vehicle 1000 includes an antenna assembly 100 .

[0204] In some embodiments, the vehicle 1000 includes glass, the glass is a first substrate 200, the first substrate 200 includes a first area 201a and a second area 202a, the first radiator 202 and the second antenna 10 are arranged in the first area 201a, the heater 400 is arranged in the second area 202a, the first radiation branch 204 is coupled to one of the coupling branches of at least one coupling branch, and the second radiation branch 102 is coupled to one of the coupling branches of at least one coupling branch to direct current to the second area 202a.

[0205] Therefore, in the present application, the current in the first radiator 202 and the second antenna 10 can be directed to the second area 202a of the first substrate 200 away from the second substrate 300 through coupling, thereby reducing the influence of the metal base of the second substrate 300 on the radiation performance of the first radiator 202 and the second antenna 10, and improving the radiation performance of the first radiator 202 and the second antenna 10.

[0206] In some embodiments, the vehicle 1000 further includes a spoiler, which includes a plastic shell and a metal bracket, the plastic shell is the second substrate 300, and the metal bracket is a metal base. When the first antenna 20 further includes a first feed source 208a and a second radiator 203, the second radiator 203 is disposed on the second substrate 300, and the first radiator 202 and the second radiator 203 are connected to the same connection point and then connected to the first feed source 208a for power feeding.

[0207] Thus, the space between the first substrate 200 and the second substrate 300 can be utilized to place the second radiator 203 of the first antenna 20, which requires a relatively large area and can operate in the first and / or second frequency bands, on the second substrate 300. This ensures stable antenna function while avoiding the large area occupied by the antenna assembly 100 on the first substrate 200, thereby ensuring the defogging / defrosting function of the first substrate 200. Furthermore, the first radiator 202 and the second radiator 203 are respectively arranged on the first substrate 200 and the second substrate 300 and fed by the first feed source 208a, thereby improving antenna performance, reducing the area occupied by the first radiator 202 on the first substrate 200, and ensuring the defogging / defrosting effect.

[0208] In summary, the multiple couplings between the first radiator 202 of the first antenna 20 and the second antenna 10 and the heater 400 can effectively change the current path and increase the radiation range, making it suitable for antenna application scenarios with complex metal environments. The first antenna 20 is distributed simultaneously on the rear windshield and spoiler, increasing the radiation path, improving the directional pattern, and increasing the omnidirectionality of the diversity antenna directional pattern synthesis. The first radiator 202 and the second radiator 203 of the first antenna 20 share a common input and are distributed simultaneously on the rear windshield and spoiler, reducing the antenna area on the rear windshield and ensuring the defogging / defrosting effect in the visible area of ​​the rear windshield. Leading out the coupling line from the heating bus 403 of the heater 400 can effectively extend the length of the coupling branch outside the spoiler range, reducing the impact of metal on the radiation of the first radiator 202 and the second antenna 10.

[0209] The above is an implementation method of the embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the embodiment of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. An antenna assembly, characterized in that: The antenna assembly comprises: a first antenna, the first antenna comprising a first radiator, the first radiator comprising a first radiating branch and a first feeding point, the first radiating branch being connected to the first feeding point; a second antenna, the second antenna comprising a second radiating branch and a second feeding point, the second radiating branch being connected to the second feeding point; a heater comprising at least one coupling branch; The first radiator and the second antenna operate in at least one same frequency band when excited; The first radiation branch is coupled to one of the at least one coupling branch, and the second radiation branch is coupled to one of the at least one coupling branch.

2. The antenna assembly according to claim 1, wherein: The first radiator includes a first radiating ring, the first radiating branch is at least a portion of a conductive line of the first radiating ring, the at least one coupling branch includes a first coupling branch, and the first radiating branch is coupled to the first coupling branch; The first radiation ring is a closed ring structure, or a breakpoint is provided on the first radiation branch of the first radiation ring.

3. The antenna assembly according to claim 2, wherein: The second antenna includes a second radiation loop, the second radiation branch is at least a portion of a conductive line of the second radiation loop, the at least one coupling branch includes a second coupling branch, and the second radiation branch is coupled to the second coupling branch; The second radiation ring is a closed ring, or a breakpoint is provided on the second radiation branch of the second radiation ring.

4. The antenna assembly according to claim 2, wherein: The first radiator further includes a first open branch connected to the first feeding point or the first radiation loop.

5. The antenna assembly according to claim 4, wherein: When the first radiation ring is a closed ring structure, the first radiator also includes a third radiation branch, the third radiation branch is at least part of the conductive line of the first open branch, the at least one coupling branch includes a third coupling branch, and the third radiation branch is coupled to the third coupling branch.

6. The antenna assembly according to claim 3, wherein: The second antenna further includes a second open branch connected to the second feeding point or the second radiation loop.

7. The antenna assembly according to claim 6, wherein: When the second radiation ring is a closed ring structure, the second antenna also includes a fourth radiation branch, the fourth radiation branch is at least a partial conductive line of the second open branch, the at least one coupling branch includes a fourth coupling branch, and the fourth radiation branch is coupled to the fourth coupling branch.

8. The antenna assembly according to any one of claims 1 to 7, characterized in that: The antenna assembly also includes a first substrate, the first substrate includes a first area and a second area, the first radiator and the second antenna are arranged in the first area, the heater is arranged in the second area, and the at least one coupling branch is at least a portion of the line of the heater or an extended branch extending from the line of the heater.

9. The antenna assembly according to claim 8, wherein: The first radiator and the second antenna are respectively arranged on two opposite sides of the first region of the first substrate and have different structures to achieve diversity reception.

10. The antenna assembly according to any one of claims 1 to 7, characterized in that: The first radiator is a composite antenna, which operates at least in the second frequency band and at least one of the first frequency band, the third frequency band and the fourth frequency band when excited. The second antenna is a composite antenna, which operates at least in the second frequency band and at least one of the third frequency band and the fourth frequency band when excited. The frequency of the first frequency band is smaller than the frequency of the second frequency band, the frequency of the second frequency band is smaller than the frequency of the third frequency band, and the frequency of the third frequency band is smaller than the frequency of the fourth frequency band.

11. The antenna assembly according to claim 8, wherein: The antenna assembly also includes a third antenna, which operates in a fourth frequency band when excited. The third antenna is located between the second antenna and the first radiator of the first antenna. The frequency of the second frequency band is lower than the frequency of the fourth frequency band.

12. The antenna assembly according to claim 8, wherein: The antenna assembly also includes a second substrate, and the first antenna also includes a second radiator and a first feed source. The second radiator is arranged on the second substrate, and the first radiator and the second radiator are both connected to the first feed source for power feeding. The frequency bands in which the first radiator and the second radiator operate when excited are at least partially different or the same.

13. The antenna assembly according to claim 12, wherein: When the second radiator operates in at least the first frequency band when excited, the second radiator includes a grid structure, the grid structure includes a plurality of horizontal conductive lines and at least one vertical conductive line, the plurality of horizontal conductive lines are arranged at intervals, and the plurality of horizontal conductive lines and the at least one vertical conductive line are arranged to cross each other; or When the second radiator operates in at least the first frequency band and / or the second frequency band when excited, the second radiator includes a plurality of vertical conductive wires and at least one horizontal conductive wire, the plurality of vertical conductive wires are arranged at intervals, the plurality of vertical conductive wires and the at least one horizontal conductive wire are arranged crosswise, and the frequency of the first frequency band is lower than the frequency of the second frequency band.

14. The antenna assembly according to claim 13, wherein: The antenna assembly also includes a metal base, the second substrate is connected to the metal base, the second radiator also includes at least one tail branch, the at least one tail branch is located on the side of the grid structure away from the metal base, each of the tail branches is connected to one of the vertical guide wires, and the second radiator also operates in the first frequency band, the third frequency band or the fourth frequency band when excited, the frequency of the first frequency band is lower than the frequency of the third frequency band, and the frequency of the third frequency band is lower than the frequency of the fourth frequency band.

15. The antenna assembly according to claim 14, wherein: The tail end branch is an L-shaped or T-shaped structure.

16. A vehicle, characterized in that: The vehicle includes an antenna assembly, which is the antenna assembly according to any one of claims 1 to 15.

17. The vehicle according to claim 16, characterized in that The vehicle also includes glass, which is a first substrate. The first substrate includes a first area and a second area. The first radiator and the second antenna are arranged in the first area, and the heater is arranged in the second area. The first radiating branch is coupled to one of the coupling branches of the at least one coupling branch, and the second radiating branch is coupled to one of the coupling branches of the at least one coupling branch to direct current to the second area.

18. The vehicle according to claim 17, characterized in that The vehicle also includes a spoiler, which includes a plastic shell and a metal bracket. The plastic shell is a second substrate, and the metal bracket is a metal base. When the first antenna also includes a first feed source and a second radiator, the second radiator is arranged on the second substrate, and the first radiator and the second radiator are connected to the same connection point and then connected to the first feed source for power feeding.

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