Antenna module and vehicle

Abstract

The utility model provides an antenna module and a vehicle, the antenna module comprises a circuit board and a radiator arranged on the circuit board, and the circuit board comprises a main body part and a protruding part which are connected; wherein the main body part comprises a first grounding plate and a first metal wire, the grounding end of the radiator is connected with the first grounding plate, and the first metal wire and at least part of the first grounding plate are overlapped along the thickness direction of the circuit board; the protruding part comprises a second metal wire and a first isolation piece, the second metal wire and the first grounding plate are not overlapped in the thickness direction of the circuit board, the first isolation piece is connected between the first metal wire and the second metal wire in series, and the first isolation piece is used for reducing the coupling current of the radiator on the second metal wire. According to the antenna module and the vehicle disclosed by the invention, the coupling current of the radiator on the second metal wire is effectively reduced, so that the influence of the coupling current on the second metal wire on the symmetrical field distribution of the first grounding plate is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of antennas, and particularly to an antenna module and a vehicle. Background Art

[0002] In vehicle-mounted communication, in addition to having requirements for the elevation angle coverage range of the antenna, it is usually also necessary to keep the radiation pattern with a certain degree of circularity to improve the communication experience when the latitude of the user remains unchanged. However, for an antenna with an irregular shape, the metal wires in the protruding part are likely to couple out electromagnetic energy, thereby destroying the symmetric field distribution of the antenna ground plane and resulting in poor symmetry of the radiation pattern when the antenna radiates in the far field. The low performance is difficult to meet the usage requirements. Summary of the Invention

[0003] The present disclosure aims to solve at least one of the technical problems in the related art to some extent.

[0004] To this end, the purpose of the present disclosure is to provide an antenna module and a vehicle.

[0005] To achieve the above object, the first aspect of the present disclosure provides an antenna module, including: a circuit board and a radiator disposed on the circuit board; the circuit board includes: a main body part and a protruding part connected to each other; wherein, the main body part includes: a radiator, a first ground plane, and a first metal wire, the grounding end of the radiator is connected to the first ground plane, and the first metal wire and at least part of the first ground plane overlap in the thickness direction of the circuit board; the protruding part includes: a second metal wire and a first isolation member, the second metal wire and the first ground plane do not overlap in the thickness direction of the circuit board, the first isolation member is connected in series between the first metal wire and the second metal wire, and the first isolation member is used to reduce the coupling current of the radiator on the second metal wire.

[0006] Optionally, the first isolation member includes: a first inductor, the first inductor is connected in series between the first metal wire and the second metal wire, and the first inductor and the first ground plane do not overlap in the thickness direction of the circuit board.

[0007] Optionally, the main body part further includes: a second ground plane, the second ground plane and the first metal wire are spaced apart in the plane direction of the circuit board, and the second ground plane is connected to the first ground plane; the protruding part further includes: a third metal wire and a second isolation member, the third metal wire and the second metal wire are spaced apart in the plane direction of the circuit board, the second isolation member is connected in series between the third metal wire and the second ground plane, and the second isolation member is used to reduce the coupling current of the radiator on the third metal wire.

[0008] Optionally, the second isolation member includes: a second inductor, which is connected in series between the third metal wire and the second ground plane, and the second inductor and the first ground plane do not overlap in the thickness direction of the circuit board.

[0009] Optionally, the second ground plane is provided with a first routing gap, and the first metal wire is disposed within the first routing gap.

[0010] Optionally, the protruding portion further includes: a fourth metal wire and a third isolation member, the fourth metal wire and the second metal wire are spaced apart in the planar direction of the circuit board, the third isolation member is connected in series between the fourth metal wire and the second ground plane, and the third isolation member is configured to reduce the coupled current of the radiator on the fourth metal wire.

[0011] Optionally, the third isolation member includes: a third inductor, which is connected in series between the fourth metal wire and the second ground plane, and the third inductor and the first ground plane do not overlap in the thickness direction of the circuit board.

[0012] Optionally, a second routing gap is provided between the third metal wire and the fourth metal wire, and the second metal wire is disposed within the second routing gap.

[0013] Optionally, the main body portion further includes: a first substrate and a second substrate, the first substrate is disposed between the first ground plane and the first metal wire, the second substrate is disposed between the first ground plane and the radiator; the protruding portion further includes: a third substrate, the third substrate is connected to the first substrate, and the second metal wire and the first isolation member are respectively disposed on a side of the third substrate away from the radiator.

[0014] Optionally, the main body portion further includes: a control chip, and a signal terminal of the control chip is connected to an end of the first metal wire away from the second metal wire.

[0015] Optionally, the protruding portion further includes: at least one pad, the pad and the second metal wire are spaced apart in the planar direction of the circuit board, and the pad is located at an end of the second metal wire away from the first metal wire.

[0016] Optionally, the protruding portion further includes: an indicator light, the indicator light is disposed on the pad, and a signal terminal of the indicator light is connected to an end of the second metal wire away from the first metal wire; or a button, the button is disposed on the pad, and a signal terminal of the button is connected to an end of the second metal wire away from the first metal wire.

[0017] The second aspect of the present disclosure provides a vehicle, including: the antenna module provided in the first aspect of the present disclosure.

[0018] The technical solution provided by the present disclosure may include the following beneficial effects:

[0019] Since the first spacer is connected in series between the first metal wire and the second metal wire, the first spacer can isolate the current between the first metal wire and the second metal wire, thereby effectively reducing the coupling current of the radiator on the second metal wire, and further reducing the influence of the coupling current on the second metal wire on the symmetric field distribution of the first ground plane. Thus, the symmetry of the radiation pattern of the radiator in far-field radiation is effectively improved, and the radiation performance of the antenna module is further enhanced, meeting the usage requirements.

[0020] The additional aspects and advantages of the present disclosure will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings, where:

[0022] Figure 1 is a schematic structural diagram (depression angle) of an antenna module proposed in an embodiment of the present disclosure;

[0023] Figure 2 is a schematic structural diagram (elevation angle) of an antenna module proposed in an embodiment of the present disclosure;

[0024] Figure 3 is a schematic structural diagram of a protruding part in an antenna module proposed in an embodiment of the present disclosure;

[0025] Figure 4 is a schematic structural diagram of a protruding part in an antenna module proposed in an embodiment of the present disclosure;

[0026] Figure 5 is a schematic structural diagram of a protruding part in an antenna module proposed in an embodiment of the present disclosure;

[0027] Figure 6 is a schematic simulation diagram proposed in an embodiment of the present disclosure;

[0028] Figure 7 is a schematic simulation diagram proposed in an embodiment of the present disclosure;

[0029] Figure 8 is a schematic simulation diagram proposed in an embodiment of the present disclosure;

[0030] Figure 9 is a schematic simulation diagram proposed in an embodiment of the present disclosure;

[0031] As shown in the figure: 1. Main body part, 11. Radiator, 12. First ground plane, 13. First metal wire, 14. Second ground plane, 15. First trace gap, 16. First substrate, 17. Control chip;

[0032] 2. Protruding part;

[0033] 21. Second metal wire;

[0034] 22. First isolation member, 221. First inductor;

[0035] 23. Third metal wire;

[0036] 24. Second isolation member, 241. Second inductor;

[0037] 25. Fourth metal wire;

[0038] 26. Third isolation member, 261. Third inductor;

[0039] 27. Second trace gap, 28. Third substrate, 29. Pad. Detailed implementation manners

[0040] The embodiments of the present disclosure will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present disclosure, and should not be construed as a limitation to the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0041] As Figure 1 and Figure 2 shown, an antenna module is proposed in an embodiment of the present disclosure, including: a circuit board and a radiator 11 disposed on the circuit board. The circuit board includes: a connected main body part 1 and a protruding part 2. Among them, the main body part 1 includes: a first ground plane 12 and a first metal wire 13. The grounding end of the radiator 11 is connected to the first ground plane 12, and the first metal wire 13 and at least part of the first ground plane 12 overlap in the thickness direction of the circuit board. The protruding part 2 includes: a second metal wire 21 and a first isolation member 22. The second metal wire 21 and the first ground plane 12 do not overlap in the thickness direction of the circuit board. The first isolation member 22 is connected in series between the first metal wire 13 and the second metal wire 21, and the first isolation member 22 is used to reduce the coupling current of the radiator 11 on the second metal wire 21.

[0042] It can be understood that since the grounding end of the radiator 11 is connected to the first grounding plate 12, the radiator 11 can be grounded by using the first grounding plate 12, thereby ensuring the efficient radiation of electromagnetic wave signals, and further meeting the communication requirements of the antenna module. At the same time, since the first isolation member 22 is connected in series between the first metal wire 13 and the second metal wire 21, the first isolation member 22 can isolate the current between the first metal wire 13 and the second metal wire 21, thereby effectively reducing the coupling current of the radiator 11 on the second metal wire 21, and further reducing the influence of the coupling current on the second metal wire 21 on the symmetric field distribution of the first grounding plate 12. Thus, the pattern symmetry of the radiator 11 during far-field radiation is effectively improved, and the radiation performance of the antenna module is further enhanced, meeting the usage requirements.

[0043] It should be noted that the main body part 1 is the main component of the circuit board in the antenna module, and the protruding part 2 is the auxiliary part of the circuit board in the antenna module. Due to the existence of the protruding part 2, the circuit board forms an irregular shape. And when the radiator 11 radiates signals, it couples with the second metal wire 21 of the protruding part 2 to generate a coupling current, and the coupling current will destroy the symmetric field distribution of the first grounding plate 12. Through the isolation effect of the first isolation member 22, the generation of the coupling current can be effectively reduced, thereby reducing the influence on the first grounding plate 12, and further improving the radiation performance of the antenna module.

[0044] The radiator 11 is used to radiate electromagnetic wave signals. The specific type of the radiator 11 can be set according to actual needs, and there is no limitation in this regard. For example, the radiator 11 can be multiple metal patches arranged at intervals, and the electromagnetic wave signals radiated by the radiator 11 can be low-frequency signals, intermediate-frequency signals, high-frequency signals, etc.

[0045] The first grounding plate 12 is used for grounding the radiator 11. The specific type of the first grounding plate 12 can be set according to actual needs, and there is no limitation in this regard. For example, the first grounding plate 12 can be a grounding copper plate in the circuit board. Among them, the circuit board can be a Printed Circuit Board (PCB), and the printed circuit board can be used for feeding the radiator 11, etc.

[0046] The first metal wire 13 is used to cooperate with the second metal wire 21 to achieve current transmission. The specific type of the first metal wire 13 can be set according to actual needs, and there is no limitation in this regard. For example, the first metal wire 13 can be a metal trace in the circuit board, and the first metal wire 13 can be used for signal transmission.

[0047] The second metal wire 21 is used to cooperate with the first metal wire 13 to achieve current transmission. The specific type of the second metal wire 21 can be set according to actual needs, and there is no limitation on this. By way of example, the second metal wire 21 can be a metal trace on a circuit board, and the second metal wire 21 can be used for signal transmission.

[0048] The first spacer 22 is used to reduce the coupled current of the radiator 11 on the second metal wire 21. The specific type of the first spacer 22 can be set according to actual needs, and there is no limitation on this.

[0049] As Figure 3 shown, in some embodiments, the first spacer 22 includes: a first inductor 221. The first inductor 221 is connected in series between the first metal wire 13 and the second metal wire 21, and the first inductor 221 and the first ground plane 12 do not overlap in the thickness direction of the circuit board.

[0050] It can be understood that since the first inductor 221 is connected in series between the first metal wire 13 and the second metal wire 21, when the radiator 11 radiates a signal, the first inductor 221 can play a role in isolating the current between the first metal wire 13 and the second metal wire 21, thereby effectively reducing the coupled current of the radiator 11 on the second metal wire 21, and further reducing the influence of the coupled current on the second metal wire 21 on the symmetric field distribution of the first ground plane 12. Thus, the symmetry of the radiation pattern of the radiator 11 in far-field radiation is effectively improved, and further the radiation performance of the antenna module is enhanced, meeting the usage requirements.

[0051] It should be noted that the first inductor 221 is an inductor, which has the characteristics of passing direct current and blocking alternating current, and passing high-frequency current and blocking low-frequency current. Utilizing this characteristic, the first inductor 221 can effectively isolate the coupled current on the second metal wire 21 and ensure the normal use of the first metal wire 13 and the second metal wire 21. Among them, the inductance value of the first inductor 221 can be set according to actual needs, and there is no limitation on this. By way of example, the inductance value range of the first inductor 221 can be 47 nH - 100 nH. Specifically, the inductance value of the first inductor 221 can be 47 nH, 60 nH, 70 nH, 80 nH, 90 nH, 100 nH, etc.

[0052] As Figure 2 and Figure 4As shown, in some embodiments, the main body portion 1 further includes: a second ground plate 14, the second ground plate 14 and the first metal wire 13 are arranged at intervals in the plane direction of the circuit board, the second ground plate 14 is connected to the first ground plate 12, and the protruding portion 2 further includes: a third metal wire 23 and a second spacer 24, the third metal wire 23 and the second metal wire 21 are arranged at intervals in the plane direction of the circuit board, the second spacer 24 is connected in series between the third metal wire 23 and the second ground plate 14, and the second spacer 24 is used to reduce the coupling current of the radiator 11 on the third metal wire 23.

[0053] It can be understood that, since the second ground plate 14 and the first metal wire 13 are arranged at intervals in the plane direction of the circuit board, and the second ground plate 14 is connected to the first ground plate 12, the radiator 11 can achieve grounding by the cooperation of the first ground plate 12 and the second ground plate 14, so as to ensure the efficient radiation of electromagnetic wave signals, and further meet the communication requirements of the antenna module. At the same time, since the second spacer 24 is connected in series between the third metal wire 23 and the second ground plate 14, the second spacer 24 can play a role in isolating current between the third metal wire 23 and the second ground plate 14, thereby effectively reducing the coupling current of the radiator 11 on the third metal wire 23, and further reducing the influence of the coupling current on the third metal wire 23 on the symmetric field distribution of the first ground plate 12. Thus, the symmetry of the radiation pattern of the radiator 11 in far-field radiation is effectively improved, and the radiation performance of the antenna module is further enhanced, meeting the usage requirements.

[0054] It should be noted that when the radiator 11 radiates a signal, it couples with the third metal wire 23 of the protruding portion 2 to generate a coupling current, and the coupling current will destroy the symmetric field distribution of the first ground plate 12. Through the isolation effect of the second spacer 24, the generation of the coupling current can be effectively reduced, thereby reducing the influence on the first ground plate 12, and further enhancing the radiation performance of the antenna module.

[0055] The second ground plate 14 is used for the grounding of the radiator 11, and the specific type of the second ground plate 14 can be set according to actual needs, and no limitation is made thereto. By way of example, the second ground plate 14 can be a grounding copper plate in the circuit board.

[0056] The third metal wire 23 is used to cooperate with the second ground plate 14 to realize current return to the ground, and the specific type of the third metal wire 23 can be set according to actual needs, and no limitation is made thereto. By way of example, the third metal wire 23 can be a metal trace in the circuit board.

[0057] The second spacer 24 is used to reduce the coupling current of the radiator 11 on the third metal wire 23, and the specific type of the second spacer 24 can be set according to actual needs, and no limitation is made thereto.

[0058] Wherein, the planar direction of the circuit board is perpendicular to the thickness direction of the circuit board. Specifically, the planar direction of the circuit board can be the direction of the xy plane in the coordinate system, and the thickness direction of the circuit board can be the direction of the z-axis in the coordinate system.

[0059] As Figure 4 shown, in some embodiments, the second spacer 24 includes: a second inductor 241, the second inductor 241 is connected in series between the third metal line 23 and the second ground plane 14, and the second inductor 241 and the first ground plane 12 do not overlap along the thickness direction of the circuit board.

[0060] It can be understood that, since the second inductor 241 is connected in series between the third metal line 23 and the second ground plane 14, when the radiator 11 radiates a signal, the second inductor 241 can play a role in isolating the current between the third metal line 23 and the second ground plane 14, thereby effectively reducing the coupling current of the radiator 11 on the third metal line 23, and further reducing the influence of the coupling current on the third metal line 23 on the symmetric field distribution of the first ground plane 12. Thus, the symmetry of the radiation pattern of the radiator 11 in the far-field radiation is effectively improved, and further the radiation performance of the antenna module is enhanced, meeting the usage requirements.

[0061] It should be noted that the second inductor 241 is an inductor. Utilizing its characteristics of passing direct current and blocking alternating current, and passing high-frequency current and blocking low-frequency current, the second inductor 241 can effectively isolate the coupling current on the third metal line 23 and ensure the normal use of the third metal line 23. Among them, the inductance value of the second inductor 241 can be set according to actual needs, and there is no limitation in this regard. By way of example, the inductance value range of the second inductor 241 can be 47 nH - 100 nH. Specifically, the inductance value of the second inductor 241 can be 47 nH, 60 nH, 70 nH, 80 nH, 90 nH, 100 nH, etc.

[0062] As Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, in some embodiments, the second ground plane 14 is provided with a first routing gap 15, and the first metal line 13 is disposed within the first routing gap 15.

[0063] It can be understood that, through the setting of the first routing gap 15, the spaced arrangement of the first metal line 13 and the second ground plane 14 is realized, enabling the antenna module to stably ground using the second ground plane 14 while also enabling stable current transmission using the first metal line 13.

[0064] It should be noted that the specific type of the first routing gap 15 can be set according to actual needs, and there is no limitation in this regard. By way of example, the first routing gap 15 can be a gap arranged in an "L" shape composed of multiple gap segments.

[0065] As Figure 5 shown, in some embodiments, the protruding portion 2 further includes: a fourth metal wire 25 and a third spacer 26. The fourth metal wire 25 and the second metal wire 21 are spaced apart in the plane direction of the circuit board. The third spacer 26 is connected in series between the fourth metal wire 25 and the second ground plane 14, and the third spacer 26 is used to reduce the coupling current of the radiator 11 on the fourth metal wire 25.

[0066] It can be understood that since the third spacer 26 is connected in series between the fourth metal wire 25 and the second ground plane 14, the third spacer 26 can isolate the current between the fourth metal wire 25 and the second ground plane 14, thereby effectively reducing the coupling current of the radiator 11 on the fourth metal wire 25, and further reducing the influence of the coupling current on the fourth metal wire 25 on the symmetric field distribution of the first ground plane 12. Thus, the symmetry of the radiation pattern of the radiator 11 in far-field radiation is effectively improved, and the radiation performance of the antenna module is further enhanced, meeting the usage requirements.

[0067] It should be noted that when the radiator 11 radiates a signal, it couples with the fourth metal wire 25 of the protruding portion 2 to generate a coupling current. The coupling current will destroy the symmetric field distribution of the first ground plane 12. Through the isolation effect of the third spacer 26, the generation of the coupling current can be effectively reduced, thereby reducing the influence on the first ground plane 12, and further enhancing the radiation performance of the antenna module.

[0068] The fourth metal wire 25 is used to cooperate with the second ground plane 14 to realize current return to the ground. The specific type of the fourth metal wire 25 can be set according to actual needs, and there is no limitation thereto. By way of example, the fourth metal wire 25 can be a metal trace in the circuit board.

[0069] The third spacer 26 is used to reduce the coupling current of the radiator 11 on the fourth metal wire 25. The specific type of the third spacer 26 can be set according to actual needs, and there is no limitation thereto.

[0070] As Figure 5 shown, in some embodiments, the third spacer 26 includes: a third inductor 261. The third inductor 261 is connected in series between the fourth metal wire 25 and the second ground plane 14, and the third inductor 261 and the first ground plane 12 do not overlap in the thickness direction of the circuit board.

[0071] It can be understood that since the third inductor 261 is connected in series between the fourth metal line 25 and the second ground plane 14, when the radiator 11 radiates a signal, the third inductor 261 can isolate the current between the fourth metal line 25 and the second ground plane 14, thereby effectively reducing the coupling current of the radiator 11 on the fourth metal line 25, and further reducing the influence of the coupling current on the fourth metal line 25 on the symmetric field distribution of the first ground plane 12. Thus, the pattern symmetry of the radiator 11 in far-field radiation is effectively improved, and the radiation performance of the antenna module is further enhanced, meeting the usage requirements.

[0072] It should be noted that the third inductor 261 is an inductor. Utilizing its characteristics of passing direct current and blocking alternating current, as well as passing high-frequency current and blocking low-frequency current, the third inductor 261 can effectively isolate the coupling current on the fourth metal line 25 and ensure the normal use of the fourth metal line 25. Among them, the inductance value of the third inductor 261 can be set according to actual needs, and there is no limitation in this regard. By way of example, the inductance value range of the third inductor 261 can be 47 nH - 100 nH. Specifically, the inductance value of the third inductor 261 can be 47 nH, 60 nH, 70 nH, 80 nH, 90 nH, 100 nH, etc.

[0073] As Figure 5 shown, in some embodiments, a second routing gap 27 is provided between the third metal line 23 and the fourth metal line 25, and the second metal line 21 is disposed within the second routing gap 27.

[0074] It can be understood that through the setting of the second routing gap 27, the second metal line 21, the third metal line 23, and the fourth metal line 25 are spaced apart, enabling the antenna module to achieve stable current transmission using the second metal line 21, the third metal line 23, and the fourth metal line 25.

[0075] It should be noted that the specific type of the second routing gap 27 can be set according to actual needs, and there is no limitation in this regard. By way of example, the second routing gap 27 can be a gap arranged in an "L" shape composed of multiple gap segments.

[0076] As Figure 1 and Figure 2 shown, in some embodiments, the main body portion 1 further includes: a first substrate 16 and a second substrate (not shown in the figure). The first substrate 16 is disposed between the first ground plane 12 and the first metal line 13, and the second substrate is disposed between the first ground plane 12 and the radiator 11. The protruding portion 2 further includes: a third substrate 28. The third substrate 28 is connected to the first substrate 16, and the second metal line 21 and the first isolation member 22 are respectively disposed on a side of the third substrate 28 away from the radiator 11.

[0077] It can be understood that since the first substrate 16 is disposed between the first ground plate 12 and the first metal line 13, and the second substrate is disposed between the first ground plate 12 and the radiator 11, the antenna module can stably carry the first metal line 13 and the first ground plate 12 by using the first substrate 16, and stably carry the radiator 11 by using the second substrate. At the same time, the spaced arrangement of the radiator 11, the first ground plate 12 and the first metal line 13 is realized, ensuring the stable operation of the antenna module.

[0078] Since the second metal line 21 and the first spacer 22 are respectively disposed on a side of the third substrate 28 away from the radiator 11, the antenna module can stably carry the second metal line 21 and the first spacer 22 by using the third substrate 28, and at the same time facilitate the connection between the first spacer 22 and the first metal line 13, ensuring the stable operation of the antenna module.

[0079] It should be noted that the first substrate 16, the second substrate and the third substrate 28 are used for carrying various devices in the antenna module. The specific types of the first substrate 16, the second substrate and the third substrate 28 can be set according to actual needs, and there is no limitation thereto. By way of example, the first substrate 16, the second substrate and the third substrate 28 are all dielectric plates, and the first substrate 16 and the third substrate 28 can be integrally formed.

[0080] Wherein, the third metal line 23, the second spacer 24, the fourth metal part and the third spacer 26 can be disposed on a side of the third substrate 28 away from the radiator 11, and metal vias can be provided on the second substrate to realize the connection between the first ground plate 12 and the second ground plate 14.

[0081] Such as Figure 2 As shown, in some embodiments, the main body part 1 further includes: a control chip 17, and a signal end of the control chip 17 is connected to an end of the first metal line 13 away from the second metal line 21.

[0082] It can be understood that since the signal end of the control chip 17 is connected to an end of the first metal line 13 away from the second metal line 21, the control chip 17 can communicate with the functional devices in the protruding part 2, thereby meeting different usage requirements.

[0083] It should be noted that the specific type of the control chip 17 can be set according to actual needs, and there is no limitation thereto. Among them, the control chip 17 can be disposed on a side of the first substrate 16 away from the second substrate.

[0084] Such as Figure 3 As shown, in some embodiments, the protruding part 2 further includes: at least one pad 29, the pad 29 and the second metal line 21 are spaced apart in the plane direction of the circuit board, and the pad 29 is located at an end of the second metal line 21 away from the first metal line 13.

[0085] It can be understood that the setting of the pad 29 facilitates the setting of the functional devices in the protruding part 2. At the same time, since the pad 29 is located at one end of the second metal wire 21 away from the first metal wire 13, the functional devices in the protruding part 2 can easily communicate with the control chip 17 in the main body part 1 and the like by using the second metal wire 21 and the first metal wire 13.

[0086] It should be noted that the pad 29 is used to set the functional devices in the protruding part 2. The specific type of the pad 29 can be set according to actual needs and is not limited thereto. Among them, the pad 29 can be set to one, two, three, etc. The pad 29 can be connected to the second grounding plate 14 by using the third metal wire 23 and the fourth metal wire 25, so that the functional devices can be grounded by using the pad 29.

[0087] In some embodiments, the protruding part 2 further includes: an indicator light or a button. The indicator light is arranged on the pad 29, and the signal end of the indicator light is connected to one end of the second metal wire 21 away from the first metal wire 13. The button is arranged on the pad 29, and the signal end of the button is connected to one end of the second metal wire 21 away from the first metal wire 13.

[0088] It can be understood that since the indicator light is arranged on the pad 29 and the signal end of the indicator light is connected to one end of the second metal wire 21 away from the first metal wire 13, the indicator light can communicate with the control chip 17 in the main body part 1 and the like by using the second metal wire 21 and the first metal wire 13, so as to meet the lighting indication function of the antenna module; since the button is arranged on the pad 29 and the signal end of the button is connected to one end of the second metal wire 21 away from the first metal wire 13, the button can communicate with the control chip 17 in the main body part 1 and the like by using the second metal wire 21 and the first metal wire 13, so as to meet the input function of the antenna module.

[0089] It should be noted that the protruding part 2 can include an indicator light or a button, and is not limited thereto.

[0090] The indicator light is used for lighting indication, and the specific type of the indicator light can be set according to actual needs and is not limited thereto.

[0091] The button is used for the input of external instructions, and the specific type of the button can be set according to actual needs and is not limited thereto.

[0092] Based on the antenna modules of the first related embodiment, the antenna modules of the second related embodiment and the antenna module of this embodiment for simulation, the following is obtained Figures 6 to 9The simulation diagram shown, wherein the antenna module of the first related embodiment is close to the main body part 1 in the antenna module of this embodiment, and the antenna module of the second related embodiment is close to the main body part 1 and the protruding part 2 in the antenna module of this embodiment, and the antenna module of the second related embodiment is not provided with the first isolation member 22, the second isolation member 24, and the third isolation member 26.

[0093] Figure 6 The far-field polarization pattern of the antenna module of the first related embodiment, the antenna module of the second related embodiment, and the antenna module of this embodiment in the low elevation angle (theta = 60°) cross-section, with a frequency of 2 GHz, Figure 7 The far-field polarization pattern of the antenna module of the first related embodiment, the antenna module of the second related embodiment, and the antenna module of this embodiment in the low elevation angle (theta = 60°) cross-section, with a frequency of 2.19 GHz, as Figure 6 and Figure 7 shown, the pattern of the antenna module of the second related embodiment has obvious depressions and the circularity deteriorates significantly, while the circularity of the pattern of the antenna module of this embodiment is close to that of the antenna module of the first related embodiment.

[0094] Figure 8 The current field distribution diagram of the protruding part 2 in the antenna module of the second related embodiment, Figure 9 The current field distribution diagram of the protruding part 2 in the antenna module of this embodiment, as Figure 8 and Figure 9 shown, the current intensity of the protruding part 2 in the antenna module of the second related embodiment is stronger, while the current intensity of the protruding part 2 in the antenna module of this embodiment is weaker. That is to say, the coupling energy of the protruding part 2 in the antenna module of this embodiment is less, and the influence on the radiation pattern of the antenna module is smaller.

[0095] The embodiment of the present disclosure also proposes a vehicle, including: the antenna module as in the embodiment of the present disclosure.

[0096] It can be understood that since the grounding end of the radiator 11 is connected to the first ground plane 12, the radiator 11 can achieve grounding by using the first ground plane 12, thereby ensuring the efficient radiation of electromagnetic wave signals, and further meeting the communication requirements of the antenna module. At the same time, since the first isolation member 22 is connected in series between the first metal wire 13 and the second metal wire 21, the first isolation member 22 can play a role in isolating current between the first metal wire 13 and the second metal wire 21, thereby effectively reducing the coupling current of the radiator 11 on the second metal wire 21, and further reducing the influence of the coupling current on the second metal wire 21 on the symmetric field distribution of the first ground plane 12. Thus, the symmetry of the pattern of the radiator 11 in far-field radiation is effectively improved, and the radiation performance of the antenna module is further enhanced, meeting the usage requirements of the vehicle.

[0097] It should be noted that the specific type of the vehicle can be set according to actual needs, and there is no limitation in this regard. For example, the vehicle can be a fuel vehicle, an electric vehicle, a hybrid vehicle, etc.

[0098] In the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is two or more.

[0099] Any process or method description shown in the flowchart or described in other ways herein can be understood as representing a module, segment, or part of executable instructions including one or more steps for implementing a specific logical function or process. The scope of the preferred embodiments of the present disclosure includes additional implementations, where the functions can be executed in a substantially simultaneous manner or in the reverse order according to the involved functions, rather than in the order shown or discussed. This should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0100] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0101] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. An antenna module, characterized in that: include: A circuit board and a radiator disposed on the circuit board; The circuit board comprises: a main body portion and a protruding portion connected to each other; The main body includes: a first grounding plate and a first metal line, the grounding end of the radiator is connected to the first grounding plate, and the first metal line and at least a portion of the first grounding plate overlap along the thickness direction of the circuit board; The protruding portion includes: a second metal wire and a first isolation member, the second metal wire and the first grounding plate do not overlap along the thickness direction of the circuit board, the first isolation member is connected in series between the first metal wire and the second metal wire, and the first isolation member is used to reduce the coupling current of the radiator on the second metal wire.

2. The antenna module according to claim 1, characterized in that: The first isolating member comprises: A first inductor is connected in series between the first metal line and the second metal line, and the first inductor and the first ground plate do not overlap along the thickness direction of the circuit board.

3. The antenna module according to claim 1, characterized in that: The main body also includes: a second grounding plate, the second grounding plate and the first metal line are arranged at intervals along the plane direction of the circuit board, and the second grounding plate is connected to the first grounding plate; The protruding portion also includes: a third metal wire and a second isolation member, the third metal wire and the second metal wire are arranged at intervals along the plane direction of the circuit board, the second isolation member is connected in series between the third metal wire and the second ground plate, and the second isolation member is used to reduce the coupling current of the radiator on the third metal wire.

4. The antenna module according to claim 3, characterized in that: The second isolating member comprises: A second inductor is connected in series between the third metal line and the second ground plate, and the second inductor and the first ground plate do not overlap along the thickness direction of the circuit board.

5. The antenna module according to claim 3, characterized in that: The second ground plate is provided with a first wiring gap, and the first metal wire is arranged in the first wiring gap.

6. The antenna module according to claim 3, characterized in that: The protruding portion further comprises: A fourth metal wire and a third isolation member, wherein the fourth metal wire and the second metal wire are spaced apart along the plane direction of the circuit board, the third isolation member is connected in series between the fourth metal wire and the second ground plane, and the third isolation member is used to reduce the coupling current of the radiator on the fourth metal wire.

7. The antenna module according to claim 6, characterized in that: The third isolating member comprises: A third inductor is connected in series between the fourth metal line and the second ground plate, and the third inductor and the first ground plate do not overlap along the thickness direction of the circuit board.

8. The antenna module according to claim 6, characterized in that: A second routing gap is provided between the third metal line and the fourth metal line, and the second metal line is provided in the second routing gap.

9. The antenna module according to claim 6, characterized in that: The main body part further includes: a first substrate and a second substrate, the first substrate is arranged between the first ground plate and the first metal line, and the second substrate is arranged between the first ground plate and the radiator; The protruding portion further includes: a third substrate, the third substrate is connected to the first substrate, and the second metal wire and the first isolation member are respectively arranged on a side of the third substrate away from the radiator.

10. The antenna module according to claim 1, characterized in that: The main body also includes: A control chip, wherein a signal end of the control chip is connected to an end of the first metal wire away from the second metal wire.

11. The antenna module according to claim 1, characterized in that: The protruding portion further comprises: At least one soldering pad is provided, wherein the soldering pad and the second metal line are spaced apart along a plane direction of the circuit board, and the soldering pad is located at an end of the second metal line away from the first metal line.

12. The antenna module according to claim 11, characterized in that: The protruding portion further comprises: An indicator light, wherein the indicator light is disposed on the pad, and a signal end of the indicator light is connected to an end of the second metal wire away from the first metal wire; or A button is arranged on the pad, and a signal end of the button is connected to an end of the second metal line away from the first metal line.

13. A vehicle, characterized in that: include: The antenna module as claimed in any one of claims 1 to 12.

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