Antenna module and vehicle

Abstract

The invention provides an antenna module and a vehicle, the antenna module comprises a first patch antenna, the first patch antenna comprises a first metal sheet, and the first metal sheet works in a first frequency band; the first FPC antenna comprises a first radiation arm, the first radiation arm works in a third frequency band, and the frequency difference between the first frequency band and the third frequency band is smaller than a first set threshold value; wherein the first metal sheet and the first radiation arm are arranged at an interval along the plane direction of the first metal sheet, and a first preset angle is formed between the plane direction of the first metal sheet and the plane direction of the first radiation arm. According to the antenna module and the vehicle disclosed by the invention, the first metal sheet and the first radiation arm of which the working frequency bands are close can share the aperture, and have a relatively large distance in a limited space, so that the influence between the first metal sheet and the first radiation arm is reduced, and the isolation between the first metal sheet and the first radiation arm is improved.

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] With the rapid development of communication technologies, the types of antennas in vehicles are increasing. However, due to limited installation space in vehicles and different polarization modes and pattern pointing requirements for each antenna, antennas with close frequency bands are prone to interfere with each other, resulting in low isolation and difficulty in meeting high-performance communication 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, a first aspect of the present disclosure provides an antenna module, including: a first patch antenna, the first patch antenna including: a first metal sheet, the first metal sheet operating in a first frequency band; a first flexible printed circuit (FPC) antenna, the first FPC antenna including: a first radiation arm, the first radiation arm operating in a third frequency band, and the frequency difference between the first frequency band and the third frequency band being less than a first set threshold; wherein, the first metal sheet and the first radiation arm are spaced apart along the plane direction of the first metal sheet, and the plane direction of the first metal sheet and the plane direction of the first radiation arm form a first preset angle.

[0006] Optionally, the first patch antenna further includes: a second metal sheet, the second metal sheet and the first metal sheet being spaced apart along the thickness direction of the first metal sheet, and the second metal sheet operating in a second frequency band; the antenna module further includes: a second FPC antenna, the second FPC antenna including: a second radiation arm, the second radiation arm operating in a fourth frequency band, and the frequency difference between the second frequency band and the fourth frequency band being less than a second set threshold; wherein, the second metal sheet and the second radiation arm are spaced apart along the plane direction of the second metal sheet, and the plane direction of the second metal sheet and the plane direction of the second radiation arm form a second preset angle.

[0007] Optionally, the first frequency band is the Beidou short message transmission frequency band, and the third frequency band is the Global Positioning System (GPS) L1 frequency band; and / or the second frequency band is the Beidou short message reception frequency band, and the fourth frequency band is the Wireless Fidelity (WiFi) 2.4G frequency band.

[0008] Optionally, a first chamfer and a second chamfer are respectively provided at opposite corners of the first metal sheet, and a third chamfer and a fourth chamfer are respectively provided at opposite corners of the second metal sheet; wherein, the direction from the first chamfer to the second chamfer and the direction from the third chamfer to the fourth chamfer form a third preset angle.

[0009] Optionally, the first radiation arm is provided with a first tuning slot, and the feeding point and the grounding point of the first radiation arm are respectively located on both sides of the first tuning slot; and / or the second radiation arm is provided with a second tuning slot, and the feeding point and the grounding point of the second radiation arm are respectively located on both sides of the second tuning slot.

[0010] Optionally, the first patch antenna further includes: a first dielectric plate disposed on a side of the first metal sheet away from the second metal sheet, and the dielectric constant of the first dielectric plate is greater than a third set threshold; a second dielectric plate disposed between the first metal sheet and the second metal sheet, and the dielectric constant of the second dielectric plate is greater than a fourth set threshold.

[0011] Optionally, the antenna module further includes: a second patch antenna, the second patch antenna includes: a third metal sheet disposed on a side of the first metal sheet away from the second metal sheet, and the third metal sheet is spaced apart from the first metal sheet, and the third metal sheet operates in a fifth frequency band.

[0012] Optionally, the second patch antenna further includes: a fourth metal sheet disposed between the first metal sheet and the third metal sheet, and the fourth metal sheet is spaced apart from the first metal sheet and the third metal sheet respectively, and the fourth metal sheet operates in a sixth frequency band.

[0013] Optionally, the fifth frequency band is a Tiantong transmission frequency band; and / or the sixth frequency band is a Tiantong reception frequency band.

[0014] Optionally, the second patch antenna further includes: a third dielectric plate disposed on a side of the third metal sheet away from the fourth metal sheet; a fourth dielectric plate disposed between the third metal sheet and the fourth metal sheet.

[0015] Optionally, the first patch antenna further includes: a ground plane disposed between the first metal sheet and the fourth metal sheet, and the ground plane is spaced apart from the first metal sheet and the fourth metal sheet respectively.

[0016] Optionally, the first patch antenna further includes: a fifth dielectric plate disposed between the ground plane and the fourth metal sheet.

[0017] Optionally, the antenna module also includes: a first printed circuit board, which is arranged on a side of the third metal sheet away from the fourth metal sheet, and the first printed circuit board and the third metal sheet are arranged at an interval; wherein the first feeding end of the first printed circuit board is connected to the feeding point of the second metal sheet, and the first feeding end of the first printed circuit board is coupled to the first metal sheet; the multiple second feeding ends of the first printed circuit board are respectively connected to the multiple feeding points of the fourth metal sheet, and the multiple second feeding ends of the first printed circuit board are respectively coupled to the third metal sheet.

[0018] Optionally, the first patch antenna also includes: a first feed needle is provided at the first feeding end of the first printed circuit board, and the end of the first feed needle away from the first printed circuit board is connected to the feeding point of the second metal sheet; wherein, the first feed needle passes through the middle of the first ground layer of the first printed circuit board, the middle of the third metal sheet and the middle of the fourth metal sheet, and the first feed needle is not in contact with the first ground layer, the third metal sheet and the fourth metal sheet respectively.

[0019] Optionally, the first feed needle includes: a first part, which is arranged at the first feeding end of the first printed circuit board, and the first part passes through the middle of the first ground layer, the middle of the third metal sheet and the middle of the fourth metal sheet, and the first part is not in contact with the first ground layer, the third metal sheet and the fourth metal sheet respectively; a second part, which is arranged at the feeding point of the second metal sheet, and the second part passes through one end of the first metal sheet, and the second part is not in contact with the first metal sheet; wherein an end of the first part away from the first printed circuit board is connected to an end of the second part away from the second metal sheet, and the first part and the second part do not overlap along the thickness direction of the first metal sheet.

[0020] Optionally, the first feed needle also includes: a transition part, which is arranged between the first part and the second part, and one end of the transition part is connected to an end of the first part away from the first printed circuit board, and an end of the transition part away from the first part is connected to an end of the second part away from the second metal sheet; wherein the transition part is located between the first metal sheet and the fourth metal sheet, and the transition part is spaced apart from the first metal sheet and the fourth metal sheet, respectively.

[0021] Optionally, the second patch antenna further includes: a second feeding pin is disposed at the second feeding end of the first printed circuit board, and one end of the second feeding pin away from the first printed circuit board is connected to the feeding point of the fourth metal sheet; wherein, a plurality of the second feeding pins respectively penetrate through the periphery of the first grounding layer of the first printed circuit board and the periphery of the third metal sheet, and the second feeding pins are not in contact with the first grounding layer and the third metal sheet respectively.

[0022] Optionally, the antenna module further includes: a second printed circuit board, the second printed circuit board is disposed on a side of the first printed circuit board away from the third metal sheet, and the second printed circuit board and the first printed circuit board are spaced apart; wherein, the first feeding end of the second printed circuit board is connected to the feeding point of the first radiation arm, and the first grounding end of the second printed circuit board is connected to the grounding point of the first radiation arm; the second feeding end of the second printed circuit board is connected to the feeding point of the second radiation arm, and the second grounding end of the second printed circuit board is connected to the grounding point of the second radiation arm.

[0023] Optionally, the antenna module further includes: a power splitter, the power splitter is disposed on the first printed circuit board, and the input end of the power splitter is connected to the output end of the first printed circuit board, and a plurality of output ends of the power splitter are respectively connected to a plurality of second feeding ends of the first printed circuit board, and the power splitter is configured to output signals with equal amplitudes and phase differences of a third preset angle in sequence.

[0024] Optionally, the antenna module further includes: a box body, the first metal sheet is disposed in the middle of the box body, and the first radiation arm is disposed on the side wall of the box body.

[0025] A vehicle provided in a second aspect of the present disclosure includes: the antenna module provided in the first aspect of the present disclosure.

[0026] The technical solution provided by the present disclosure may include the following beneficial effects:

[0027] Since the first metal sheet and the first radiation arm are spaced apart in the plane direction of the first metal sheet, and the plane direction of the first metal sheet and the plane direction of the first radiation arm form a first preset angle, the first metal sheet and the first radiation arm with working frequencies close to each other can achieve a common aperture, and at the same time have a large spacing in a limited space, thereby reducing the influence between the first metal sheet and the first radiation arm, improving the isolation between the first metal sheet and the first radiation arm, and further meeting the requirements of high-performance communication of the antenna module.

[0028] Additional aspects and advantages of the present disclosure will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present disclosure. Brief Description of the Drawings

[0029] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where:

[0030] Figure 1 is a perspective view (partial perspective) of an antenna module according to an embodiment of the present disclosure;

[0031] Figure 2 is a perspective view of an antenna module according to an embodiment of the present disclosure (the box body is not shown);

[0032] Figure 3 is a front view of the first patch antenna and the second patch antenna in the antenna module according to an embodiment of the present disclosure;

[0033] Figure 4 is a perspective view of an antenna module according to an embodiment of the present disclosure (the box body is not shown);

[0034] Figure 5 is a developed view of the first patch antenna and the second patch antenna in the antenna module according to an embodiment of the present disclosure (the arrow indicates the installation sequence);

[0035] Figure 6 is a top view of the first printed circuit board in the antenna module according to an embodiment of the present disclosure;

[0036] Figure 7 is a simulation curve graph of the antenna module according to an embodiment of the present disclosure;

[0037] Figure 8 is a simulation curve graph of the antenna module according to an embodiment of the present disclosure;

[0038] Figure 9 is a simulation curve graph of the antenna module according to an embodiment of the present disclosure;

[0039] Figure 10 is a simulation curve graph of the antenna module according to an embodiment of the present disclosure;

[0040] As shown in the figure: 1. First patch antenna;

[0041] 11. First metal sheet, 111. First cut corner, 112. Second cut corner;

[0042] 12. Second metal sheet, 121. Third cut corner, 122. Fourth cut corner;

[0043] 13. First dielectric plate, 14. Second dielectric plate, 15. Ground plate, 16. Fifth dielectric plate;

[0044] 2. a second patch antenna, 21. a third metal sheet, 22. a fourth metal sheet, 23. a third dielectric plate, 24. a fourth dielectric plate;

[0045] 3. first FPC antenna, 31. first radiating arm, 32. first tuning slot;

[0046] 4. second FPC antenna, 41. second radiating arm, 42. second tuning slot;

[0047] 5. a second printed circuit board, 51. a first feeding spring, 52. a first grounding spring, 53. a second feeding spring, 54. a second grounding spring;

[0048] 6. The first printed circuit board;

[0049] 61. first feed needle, 611. first part, 612. second part, 613. transition part;

[0050] 62. a second feed pin, 63. a first ground layer;

[0051] 7. Power divider. 8. Box body. DETAILED DESCRIPTION

[0052] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, an embodiment of the present disclosure proposes an antenna module, including a first patch antenna 1 and a first FPC (Flexible Printed Circuit) antenna 3, the first patch antenna 1 includes a first metal sheet 11, the first metal sheet 11 operates in a first frequency band, the first FPC antenna 3 includes a first radiating arm 31, the first radiating arm 31 operates in a third frequency band, and the frequency difference between the first frequency band and the third frequency band is less than a first set threshold, wherein the first metal sheet 11 and the first radiating arm 31 are spaced apart along the planar direction of the first metal sheet 11, and the planar direction of the first metal sheet 11 and the planar direction of the first radiating arm 31 are at a first preset angle.

[0054] It can be understood that since the first metal sheet 11 operates in the first frequency band, the antenna module can communicate using the first frequency band. Since the first radiation arm 31 operates in the third frequency band, the antenna module can communicate using the third frequency band. Thus, by integrating the first patch antenna 1 and the first FPC antenna 3, multi-band communication of the antenna module is achieved, meeting different functional requirements.

[0055] At the same time, since the first metal sheet 11 and the first radiation arm 31 are spaced apart along the plane direction of the first metal sheet 11, and the plane direction of the first metal sheet 11 and the plane direction of the first radiation arm 31 form a first preset angle, the first metal sheet 11 and the first radiation arm 31 with similar operating frequency bands can achieve a common aperture, and at the same time have a large spacing within a limited space, thereby reducing the influence between the first metal sheet 11 and the first radiation arm 31, improving the isolation degree between the first metal sheet 11 and the first radiation arm 31, and further meeting the requirements of high-performance communication of the antenna module.

[0056] It should be noted that since the frequency difference between the first frequency band and the third frequency band is less than the first set threshold, the operating frequency bands of the first metal sheet 11 and the first radiation arm 31 are close, resulting in the first metal sheet 11 and the first radiation arm 31 being easily affected by each other when radiating signals, with a low isolation degree, making it difficult for the antenna module to communicate using the first frequency band and the third frequency band with high performance. However, since the first metal sheet 11 and the first radiation arm 31 are spaced apart along the plane direction of the first metal sheet 11, the spacing between the first metal sheet 11 and the first radiation arm 31 is increased, thereby effectively improving the isolation degree between the first metal sheet 11 and the first radiation arm 31, and further improving the performance of the antenna module.

[0057] Since the radiation direction of the first metal sheet 11 when radiating signals is in the thickness direction of the first metal sheet 11, and the radiation direction of the first radiation arm 31 when radiating signals is in the plane direction of the first radiation arm 31, therefore, when the plane direction of the first metal sheet 11 and the plane direction of the first radiation arm 31 form a first preset angle, a common aperture of the first patch antenna 1 and the first FPC antenna 3 can be achieved, thus facilitating the antenna module to achieve efficient communication. Among them, the aperture of the antenna module refers to the effective radiation surface for the antenna module to transmit or receive signals.

[0058] The first patch antenna 1 is a patch antenna, and the patch antenna has strong side radiation circular polarization performance. Among them, the first metal sheet 11 of the first patch antenna 1 is used for communication in the first frequency band of the antenna module. The specific type of the first metal sheet 11 can be set according to actual needs, and there is no limitation on this. For example, the first metal sheet 11 can be a metal layer structure close to a square.

[0059] The first FPC antenna 3 is an FPC antenna, which has strong stability and installation flexibility. Among them, the first radiation arm 31 of the first FPC antenna 3 is used for communication in the third frequency band of the antenna module. The specific type of the first radiation arm 31 can be set according to actual needs, and there is no limitation in this regard. By way of example, the first radiation arm 31 can be a metal layer structure close to a rectangle.

[0060] The plane direction of the first metal sheet 11 refers to the direction of the plane where the first metal sheet 11 is located. The plane direction of the first metal sheet 11 is perpendicular to the thickness direction of the first metal sheet 11. The plane direction of the first radiation arm 31 refers to the direction of the plane where the first radiation arm 31 is located. The plane direction of the first radiation arm 31 is perpendicular to the thickness direction of the first radiation arm 31.

[0061] The first preset angle can be set according to actual needs, and there is no limitation in this regard. By way of example, the first preset angle can be 90 degrees.

[0062] Among them, in the coordinate system of the application scenario, the plane direction of the first metal sheet 11 can be the xy plane direction of the coordinate system, the thickness direction of the first metal sheet 11 can be the z-axis direction, the plane direction of the first radiation arm 31 can be the xz plane direction or the yz plane direction of the coordinate system, and the thickness direction of the first radiation arm 31 can be the y-axis direction or the x-axis direction.

[0063] The first frequency band and the third frequency band are two frequency bands that are close to or partially overlap. The specific frequency bands of the first frequency band and the third frequency band can be set according to actual needs, and there is no limitation in this regard.

[0064] Among them, the first set threshold can be set according to actual needs, and there is no limitation in this regard.

[0065] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in

[0066] It can be understood that since the second metal sheet 12 operates in the second frequency band, the antenna module can communicate using the second frequency band. Since the second radiation arm 41 operates in the fourth frequency band, the antenna module can communicate using the fourth frequency band. Thus, through the integration of the first patch antenna 1, the first FPC antenna 3, and the second FPC antenna 4, multi-band communication of the antenna module is achieved, meeting different functional requirements.

[0067] Meanwhile, since the second metal sheet 12 and the second radiation arm 41 are spaced apart along the plane direction of the second metal sheet 12, and the plane directions of the second metal sheet 12 and the second radiation arm 41 form a second preset angle, the second metal sheet 12 and the second radiation arm 41 with adjacent operating frequency bands can achieve a common aperture, and at the same time have a relatively large spacing within a limited space, thereby reducing the influence between the second metal sheet 12 and the second radiation arm 41, improving the isolation between the second metal sheet 12 and the second radiation arm 41, and further meeting the requirements of high-performance communication of the antenna module.

[0068] It should be noted that since the frequency difference between the second frequency band and the fourth frequency band is less than the second set threshold, the operating frequency bands of the second metal sheet 12 and the second radiation arm 41 are close, resulting in the second metal sheet 12 and the second radiation arm 41 being prone to mutual influence when radiating signals, with relatively low isolation, making it difficult for the antenna module to communicate using the second frequency band and the fourth frequency band with high performance. However, since the second metal sheet 12 and the second radiation arm 41 are spaced apart along the plane direction of the second metal sheet 12, the spacing between the second metal sheet 12 and the second radiation arm 41 is increased, thereby effectively improving the isolation between the second metal sheet 12 and the second radiation arm 41, and further improving the performance of the antenna module.

[0069] Since the radiation direction of the second metal sheet 12 when radiating signals is in the thickness direction of the second metal sheet 12, and the radiation direction of the second radiation arm 41 when radiating signals is in the plane direction of the second radiation arm 41, therefore, when the plane direction of the second metal sheet 12 and the plane direction of the second radiation arm 41 form a second preset angle, a common aperture of the first patch antenna 1 and the second FPC antenna 4 can be achieved, thus facilitating the antenna module to achieve efficient communication.

[0070] The second metal sheet 12 of the first patch antenna 1 is used for communication in the second frequency band of the antenna module. The specific type of the second metal sheet 12 can be set according to actual needs, and there is no limitation in this regard. By way of example, the second metal sheet 12 can be a metal layer structure close to a square.

[0071] The second FPC antenna 4 is an FPC antenna. Among them, the second radiation arm 41 of the second FPC antenna 4 is used for communication in the fourth frequency band of the antenna module. The specific type of the second radiation arm 41 can be set according to actual needs, and there is no limitation on this. By way of example, the second radiation arm 41 can be a metal layer structure close to a rectangle.

[0072] The plane direction of the second metal sheet 12 refers to the direction of the plane where the second metal sheet 12 is located. The plane direction of the second metal sheet 12 is perpendicular to the thickness direction of the second metal sheet 12. The plane direction of the second radiation arm 41 refers to the direction of the plane where the second radiation arm 41 is located. The plane direction of the second radiation arm 41 is perpendicular to the thickness direction of the second radiation arm 41.

[0073] The second preset angle can be set according to actual needs, and there is no limitation on this. By way of example, the second preset angle can be 90 degrees.

[0074] Among them, in the coordinate system of the application scenario, the plane direction of the second metal sheet 12 can be the xy plane direction of the coordinate system, the thickness direction of the second metal sheet 12 can be the z-axis direction, the plane direction of the second radiation arm 41 can be the yz plane direction or the xz plane direction of the coordinate system, and the thickness direction of the first radiation arm 31 can be the x-axis direction or the y-axis direction.

[0075] The second frequency band and the fourth frequency band are two frequency bands that are close or partially overlapping. The specific frequency bands of the second frequency band and the fourth frequency band can be set according to actual needs, and there is no limitation on this.

[0076] Among them, the second set threshold can be set according to actual needs, and there is no limitation on this.

[0077] The first frequency band and the second frequency band can be used as the transmitting frequency band and the receiving frequency band of the first patch antenna 1. By way of example, the first frequency band is the transmitting frequency band of the first patch antenna 1, and the second frequency band is the receiving frequency band of the first patch antenna 1. Correspondingly, the first metal sheet 11 serves as the transmitting patch of the first patch antenna 1, and the second metal sheet 12 serves as the receiving patch of the first patch antenna 1. Both the first metal sheet 11 and the second metal sheet 12 are square, and the size of the first metal sheet 11 is larger than the size of the second metal sheet 12.

[0078] In some embodiments, the first frequency band is the Beidou short message transmitting frequency band, and the third frequency band is the GPS (Global Positioning System) L1 frequency band; and / or the second frequency band is the Beidou short message receiving frequency band, and the fourth frequency band is the WiFi (Wireless Fidelity) 2.4G frequency band.

[0079] It can be understood that since the first metal sheet 11 operates in the Beidou short message transmission frequency band, the antenna module can communicate using the Beidou short message transmission frequency band. Since the first radiation arm 31 operates in the GPS L1 frequency band, the antenna module can communicate using the GPS L1 frequency band. Thus, through the integration of the first patch antenna 1 and the first FPC antenna 3, multi-band communication of the antenna module is achieved, meeting different functional requirements.

[0080] Since the second metal sheet 12 operates in the Beidou short message reception frequency band, the antenna module can communicate using the Beidou short message reception frequency band. Since the second radiation arm 41 operates in the WiFi 2.4G frequency band, the antenna module can communicate using the WiFi 2.4G frequency band. Thus, through the integration of the first patch antenna 1 and the second FPC antenna 4, multi-band communication of the antenna module is achieved, meeting different functional requirements.

[0081] It should be noted that the range of the Beidou short message transmission frequency band is 1.61 GHz - 1.6265 GHz, and the range of the GPS L1 frequency band is 1.57542 ± 1.023 MHz. It can be seen from this that the Beidou short message transmission frequency band and the GPS L1 frequency band are relatively close. Therefore, by setting the relative positions between the first metal sheet 11 and the first radiation arm 31, the influence between the Beidou short message transmission frequency band and the GPS L1 frequency band can be reduced, and the isolation degree between the two is improved.

[0082] The range of the Beidou short message reception frequency band is 2.4835 GHz - 2.5 GHz, and the range of the WiFi 2.4G frequency band is 2.4 GHz - 2.4835 GHz. It can be seen from this that the Beidou short message reception frequency band and the WiFi 2.4G frequency band are relatively close. Therefore, by setting the relative positions between the second metal sheet 12 and the second radiation arm 41, the influence between the Beidou short message reception frequency band and the WiFi 2.4G frequency band can be reduced, and the isolation degree between the two is improved.

[0083] Since the first metal sheet 11 operates in the Beidou short message transmission frequency band and the second metal sheet 12 operates in the Beidou short message reception frequency band, the antenna module can communicate using the Beidou short message. Moreover, since the first radiation arm 31 operates in the WiFi 2.4G frequency band and the second radiation arm 41 operates in the GPS L1 frequency band, the antenna module can communicate using the WiFi 2.4G frequency band and the GPS L1 frequency band. Thus, different functional requirements can be met.

[0084] Such as Figure 5As shown, in some embodiments, a first cut corner 111 and a second cut corner 112 are respectively provided at opposite corners of the first metal sheet 11, and a third cut corner 121 and a fourth cut corner 122 are respectively provided at opposite corners of the second metal sheet 12. Among them, the direction from the first cut corner 111 to the second cut corner 112 and the direction from the third cut corner 121 to the fourth cut corner 122 form a third preset angle.

[0085] It can be understood that since the direction from the first cut corner 111 to the second cut corner 112 and the direction from the third cut corner 121 to the fourth cut corner 122 form a third preset angle, the first metal sheet 11 and the second metal sheet 12 can cooperate with each other to realize the circular polarization of the radiation signal of the first patch antenna 1. And since the first cut corner 111 and the second cut corner 112 are respectively provided at opposite corners of the first metal sheet 11, the first metal sheet 11 can utilize the cooperation of the first cut corner 111 and the second cut corner 112 to realize the left-handed circular polarization of the radiation signal of the first patch antenna 1. At the same time, since the third cut corner 121 and the fourth cut corner 122 are respectively provided at opposite corners of the second metal sheet 12, the second metal sheet 12 can utilize the cooperation of the third cut corner 121 and the fourth cut corner 122 to realize the right-handed circular polarization of the radiation signal of the first patch antenna 1. Thus, the communication requirements of the antenna module are met.

[0086] It should be noted that the first cut corner 111, the second cut corner 112, the third cut corner 121, and the fourth cut corner 122 are all cut corner structures. The cut corner structure refers to the structure after cutting off the corner. Among them, the cut-off corner can be a right-angled equilateral triangle.

[0087] When the first metal sheet 11 and the second metal sheet 12 are respectively square, the direction from the first cut corner 111 to the second cut corner 112 and the direction from the third cut corner 121 to the fourth cut corner 122 are respectively the diagonal directions of the square.

[0088] The specific type of the third preset angle can be set according to actual needs, and there is no limitation on this. For example, the third preset angle can be 90 degrees.

[0089] As Figure 2 and Figure 4 shown, in some embodiments, the first radiation arm 31 is provided with a first tuning slot 32, and the feeding point and the grounding point of the first radiation arm 31 are respectively located on both sides of the first tuning slot 32; and / or the second radiation arm 41 is provided with a second tuning slot 42, and the feeding point and the grounding point of the second radiation arm 41 are respectively located on both sides of the second tuning slot 42.

[0090] It can be understood that since the first radiation arm 31 is provided with the first tuning slot 32, and the feeding point and the grounding point of the first radiation arm 31 are respectively located on both sides of the first tuning slot 32, the first radiation arm 31 can use the first tuning slot 32 to achieve resonance adjustment, thereby realizing the efficient radiation of the first radiation arm 31, and further meeting the requirements of high-performance communication of the antenna module.

[0091] Since the second radiation arm 41 is provided with the second tuning slot 42, and the feeding point and the grounding point of the second radiation arm 41 are respectively located on both sides of the second tuning slot 42, the second radiation arm 41 can use the second tuning slot 42 to achieve resonance adjustment, thereby realizing the efficient radiation of the second radiation arm 41, and further meeting the requirements of high-performance communication of the antenna module.

[0092] It should be noted that the first tuning slot 32 is a slot structure provided on the first radiation arm 31. More radiation currents on the first radiation arm 31 are concentrated at the first tuning slot 32. The specific type of the first tuning slot 32 is set according to actual needs, and no limitation is made thereto.

[0093] The second tuning slot 42 is a slot structure provided on the second radiation arm 41. More radiation currents on the second radiation arm 41 are concentrated at the second tuning slot 42. The specific type of the second tuning slot 42 can be set according to actual needs, and no limitation is made thereto.

[0094] Among them, in addition to setting the slot structure, the first radiation arm 31 and the second radiation arm 41 can also be provided with other structures according to actual needs. For example, the second radiation arm 41 can be provided with an avoidance hole.

[0095] Such as Figure 2 and Figure 3 As shown, in some embodiments, the first patch antenna 1 further includes a first dielectric plate 13 and a second dielectric plate 14. The first dielectric plate 13 is disposed on a side of the first metal sheet 11 away from the second metal sheet 12, and the dielectric constant of the first dielectric plate 13 is greater than a third set threshold. The second dielectric plate 14 is disposed between the first metal sheet 11 and the second metal sheet 12, and the dielectric constant of the second dielectric plate 14 is greater than a fourth set threshold.

[0096] It can be understood that since the first dielectric plate 13 is disposed on the side of the first metal sheet 11 away from the second metal sheet 12, the first dielectric plate 13 can effectively carry and isolate the first metal sheet 11, thereby ensuring the stable radiation of the first metal sheet 11. At the same time, since the first dielectric plate 13 has a relatively large dielectric constant, the first dielectric plate 13 can be set to a smaller size, which not only effectively reduces the space occupied by the first patch antenna 1, but also increases the distance between the first patch antenna 1 and the first FPC antenna 3 and the second FPC antenna 4, thereby further improving the isolation between the first patch antenna 1 and the first FPC antenna 3 and the second FPC antenna 4.

[0097] Since the second dielectric plate 14 is disposed between the first metal sheet 11 and the second metal sheet 12, the second dielectric plate 14 can effectively carry and isolate the second metal sheet 12, thereby ensuring the stable radiation of the second metal sheet 12. At the same time, since the second dielectric plate 14 has a relatively large dielectric constant, the second dielectric plate 14 can be set to a smaller size, which not only effectively reduces the space occupied by the second patch antenna 2, but also increases the distance between the first patch antenna 1 and the first FPC antenna 3 and the second FPC antenna 4, thereby further improving the isolation between the first patch antenna 1 and the first FPC antenna 3 and the second FPC antenna 4.

[0098] It should be noted that both the first dielectric plate 13 and the second dielectric plate 14 are dielectric plates. The larger the dielectric constant of the dielectric plate, the smaller the wavelength of the resonant frequency and the smaller the size design. Among them, the specific types of the first dielectric plate 13 and the second dielectric plate 14 can be set according to actual needs, and there is no limitation in this regard. For example, the first dielectric plate 13 and the second dielectric plate 14 can both be high-frequency plates, and the dielectric constant of the first dielectric plate 13 is 5.5, and the dielectric constant of the second dielectric plate 14 is 4.

[0099] In some embodiments, the first FPC antenna 3 further includes a first flexible board (not shown in the figure). The first flexible board and the first metal sheet 11 are spaced apart in the plane direction of the first metal sheet 11, and the plane direction of the first flexible board and the plane direction of the first metal sheet 11 form a first preset angle. The first radiation arm 31 is disposed on the first flexible board; and / or the second FPC antenna 4 further includes a second flexible board (not shown in the figure). The second flexible board and the second metal sheet 12 are spaced apart in the plane direction of the second metal sheet 12, and the plane direction of the second flexible board and the plane direction of the second metal sheet 12 form a second preset angle. The second radiation arm 41 is disposed on the second flexible board.

[0100] It can be understood that, since the first flexible plate and the first metal sheet 11 are arranged at intervals in the plane direction of the first metal sheet 11, and the plane direction of the first flexible plate and the plane direction of the first metal sheet 11 form a first preset angle, and the first radiating arm 31 is arranged on the first flexible plate, the first flexible plate can not only effectively carry and isolate the first radiating arm 31, but also have a large distance while realizing the common aperture of the first radiating arm 31 and the first metal sheet 11, thus ensuring the efficient operation of the first metal sheet 11 and the first radiating arm 31.

[0101] Since the second flexible plate and the second metal sheet 12 are arranged at intervals in the plane direction of the second metal sheet 12, and the plane direction of the second flexible plate and the plane direction of the second metal sheet 12 form a second preset angle, and the second radiating arm 41 is arranged on the second flexible plate, the second flexible plate can not only effectively carry and isolate the second radiating arm 41, but also have a large distance while realizing the common aperture of the second radiating arm 41 and the second metal sheet 12, thus ensuring the efficient operation of the second metal sheet 12 and the second radiating arm 41.

[0102] It should be noted that the first flexible plate is used to carry the first radiating arm 31. The specific type of the first flexible plate can be set according to actual needs, and there is no limitation on this. For example, the first flexible plate can be a plate structure made of materials such as polyimide and polyester film.

[0103] The second flexible plate is used to carry the second radiating arm 41. The specific type of the second flexible plate can be set according to actual needs, and there is no limitation on this. For example, the second flexible plate can be a plate structure made of materials such as polyimide and polyester film.

[0104] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, in some embodiments, the antenna module further includes a second patch antenna 2. The second patch antenna 2 includes a third metal sheet 21. The third metal sheet 21 is arranged on the side of the first metal sheet 11 away from the second metal sheet 12, and the third metal sheet 21 and the first metal sheet 11 are arranged at intervals. The third metal sheet 21 operates in the fifth frequency band.

[0105] It can be understood that, since the third metal sheet 21 operates in the fifth frequency band, the antenna module can use the fifth frequency band for communication. Thus, by integrating the first patch antenna 1, the second patch antenna 2, the first FPC antenna 3 and the second FPC antenna 4, multi-band communication of the antenna module is realized, meeting different functional requirements.

[0106] It should be noted that the second patch antenna 2 is a patch antenna. Among them, the third metal sheet 21 of the second patch antenna 2 is used for communication in the fifth frequency band of the antenna module. The specific type of the third metal sheet 21 can be set according to actual needs, and there is no restriction on this. By way of example, the third metal sheet 21 can be a metal layered structure close to a square shape.

[0107] The planar direction of the third metal sheet 21 refers to the direction of the plane where the third metal sheet 21 is located. The planar direction of the third metal sheet 21 is perpendicular to the thickness direction of the third metal sheet 21. Among them, in the coordinate system of the application scenario, the planar direction of the third metal sheet 21 can be the xy plane direction of the coordinate system, and the thickness direction of the third metal sheet 21 can be the z-axis direction.

[0108] The specific frequency band of the fifth frequency band can be set according to actual needs, and there is no restriction on this.

[0109] Such as Figure 2 、 Figure 3 and Figure 5 As shown, in some embodiments, the second patch antenna 2 further includes a fourth metal sheet 22. The fourth metal sheet 22 is disposed between the first metal sheet 11 and the third metal sheet 21, and the fourth metal sheet 22 is spaced apart from the first metal sheet 11 and the third metal sheet 21 respectively. The fourth metal sheet 22 operates in the sixth frequency band.

[0110] It can be understood that since the fourth metal sheet 22 operates in the sixth frequency band, the antenna module can utilize the sixth frequency band for communication. Thus, by integrating the first patch antenna 1, the second patch antenna 2, the first FPC antenna 3, and the second FPC antenna 4, multi-band communication of the antenna module is achieved, meeting different functional requirements.

[0111] It should be noted that the fourth metal sheet 22 is used for communication in the sixth frequency band of the antenna module. The specific type of the fourth metal sheet 22 can be set according to actual needs, and there is no restriction on this. By way of example, the fourth metal sheet 22 can be a metal layered structure close to a square shape.

[0112] The planar direction of the fourth metal sheet 22 refers to the direction of the plane where the fourth metal sheet 22 is located. The planar direction of the fourth metal sheet 22 is perpendicular to the thickness direction of the fourth metal sheet 22. Among them, in the coordinate system of the application scenario, the planar direction of the fourth metal sheet 22 can be the xy plane direction of the coordinate system, and the thickness direction of the fourth metal sheet 22 can be the z-axis direction.

[0113] The specific frequency band of the sixth frequency band can be set according to actual needs, and there is no restriction on this.

[0114] Among them, the design in which the first patch antenna 1, the second patch antenna 2, the first FPC antenna 3, and the second FPC antenna 4 share the same aperture and are arranged independently of each other can ensure the simultaneous operation of each function, thereby effectively improving the performance of the antenna module.

[0115] In some embodiments, the fifth frequency band is the Tian Tong transmitting frequency band; and / or the sixth frequency band is the Tian Tong receiving frequency band.

[0116] It can be understood that since the third metal sheet 21 operates in the Tian Tong transmitting frequency band, the antenna module can communicate using the Tian Tong transmitting frequency band; since the fourth metal sheet 22 operates in the Tian Tong receiving frequency band, the antenna module can communicate using the Tian Tong receiving frequency band. Thus, by the cooperation of the third metal sheet 21 and the fourth metal sheet 22, the antenna module can communicate using the Tian Tong frequency band, thereby meeting different functional requirements.

[0117] It should be noted that the range of the Tian Tong transmitting frequency band is 1.98 GHz - 2.01 GHz, and the range of the Tian Tong receiving frequency band is 2.17 GHz - 2.2 GHz.

[0118] As Figure 2 and Figure 3 shown, in some embodiments, the second patch antenna 2 further includes a third dielectric plate 23 and a fourth dielectric plate 24. The third dielectric plate 23 is disposed on a side of the third metal sheet 21 away from the fourth metal sheet 22, and the fourth dielectric plate 24 is disposed between the third metal sheet 21 and the fourth metal sheet 22.

[0119] It can be understood that since the third dielectric plate 23 is disposed on a side of the third metal sheet 21 away from the fourth metal sheet 22, the third dielectric plate 23 can effectively carry and isolate the third metal sheet 21, thereby ensuring the stable radiation of the third metal sheet 21. At the same time, since the fourth dielectric plate 24 is disposed between the third metal sheet 21 and the fourth metal sheet 22, the fourth dielectric plate 24 can effectively carry and isolate the fourth metal sheet 22. Thus, the stable radiation of the third metal sheet 21 and the fourth metal sheet 22 is ensured, and further, the high-performance communication requirements of the antenna module are met.

[0120] It should be noted that both the third dielectric plate 23 and the fourth dielectric plate 24 are dielectric plates. The specific types of the third dielectric plate 23 and the fourth dielectric plate 24 can be set according to actual needs, and there is no limitation thereto. By way of example, both the third dielectric plate 23 and the fourth dielectric plate 24 can be FR4 boards.

[0121] As Figure 2 、 Figure 3 and Figure 5As shown, in some embodiments, the first patch antenna 1 further includes a ground plane 15, and the ground plane 15 is disposed between the first metal sheet 11 and the fourth metal sheet 22, and the ground plane 15 is spaced apart from the first metal sheet 11 and the fourth metal sheet 22 respectively.

[0122] It can be understood that since the second metal sheet 12 is located on the side of the first metal sheet 11 away from the fourth metal sheet 22, and the third metal sheet 21 is located on the side of the fourth metal sheet 22 away from the first metal sheet 11, the first patch antenna 1 and the second patch antenna 2 are adjacently arranged through the first metal sheet 11 and the fourth metal sheet 22. Thus, by disposing the ground plane 15 between the first metal sheet 11 and the fourth metal sheet 22, electromagnetic isolation between the first metal sheet 11 and the fourth metal sheet 22 can be achieved by using the ground plane 15, thereby reducing the mutual influence between the first patch antenna 1 and the second patch antenna 2, and further meeting the high-performance communication requirements of the antenna module.

[0123] It should be noted that the ground plane 15 is a ground plane suspended between the first metal sheet 11 and the fourth metal sheet 22, and the specific type of the ground plane 15 can be set according to actual needs, and there is no limitation thereto. By way of example, the ground plane 15 is a near-square layered metal structure.

[0124] As Figure 2 and Figure 3 shown, in some embodiments, the first patch antenna 1 further includes a fifth dielectric board 16, and the fifth dielectric board 16 is disposed between the ground plane 15 and the fourth metal sheet 22.

[0125] It can be understood that since the fifth dielectric board 16 is disposed between the ground plane 15 and the fourth metal sheet 22, the fifth dielectric board 16 can effectively carry the ground plane 15, thereby ensuring the stable isolation of the ground plane 15 from the first patch antenna 1 and the second patch antenna 2.

[0126] It should be noted that the fifth dielectric board 16 is a dielectric board, and the specific type of the fifth dielectric board 16 can be set according to actual needs, and there is no limitation thereto. By way of example, the fifth dielectric board 16 can be an FR4 board.

[0127] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6As shown, in some embodiments, the antenna module further includes a first printed circuit board 6, which is disposed on a side of the third metal sheet 21 away from the fourth metal sheet 22, and the first printed circuit board 6 and the third metal sheet 21 are spaced apart. Among them, a first feeding end of the first printed circuit board 6 is connected to a feeding point of the second metal sheet 12, and the first feeding end of the first printed circuit board 6 is coupled to the first metal sheet 11. A plurality of second feeding ends of the first printed circuit board 6 are respectively connected to a plurality of feeding points of the fourth metal sheet 22, and the plurality of second feeding ends of the first printed circuit board 6 are respectively coupled to the third metal sheet 21.

[0128] It can be understood that since the first feeding end of the first printed circuit board 6 is connected to the feeding point of the second metal sheet 12, and the first feeding end of the first printed circuit board 6 is coupled to the first metal sheet 11, the first printed circuit board 6 can couple and feed the first metal sheet 11, and at the same time can also directly feed the second metal sheet 12, so that the first metal sheet 11 and the second metal sheet 12 can radiate efficiently, thereby meeting the high-performance communication requirements of the antenna module.

[0129] Since a plurality of second feeding ends of the printed circuit board are respectively connected to a plurality of feeding points of the fourth metal sheet 22, and the plurality of second feeding ends of the printed circuit board are respectively coupled to the third metal sheet 21, the first printed circuit board 6 can couple and feed the third metal sheet 21, and at the same time can also directly feed the fourth metal sheet 22, so that the third metal sheet 21 and the fourth metal sheet 22 can radiate efficiently, thereby meeting the high-performance communication requirements of the antenna module.

[0130] Among them, since the first feeding end of the first printed circuit board 6 is connected to the feeding point of the second metal sheet 12, and the first feeding end of the first printed circuit board 6 is coupled to the first metal sheet 11, the first patch antenna 1 forms a single-feed double-layer structure, which not only effectively reduces the complexity of the first patch antenna 1, but also is easy to realize single-port dual-band dual-circular polarization of the first patch antenna 1.

[0131] It should be noted that the first printed circuit board 6 is a printed circuit board (Printed Circuit Board, PCB). The specific type of the first printed circuit board 6 can be set according to actual needs, and there is no limitation thereto. For example, the first printed circuit board 6 has a first feeding layer and a first grounding layer 63. The first grounding layer 63 is located on a side of the first feeding layer close to the first metal sheet 11. The first feeding end and the second feeding ends of the first printed circuit board 6 are respectively disposed on the first feeding layer, and the grounding end of the first printed circuit board 6 is disposed on the second grounding layer.

[0132] Such as Figure 3As shown, in some embodiments, the first patch antenna 1 further includes a first feed pin 61 disposed at the first feed end of the first printed circuit board 6, and one end of the first feed pin 61 away from the first printed circuit board 6 is connected to the feed point of the second metal sheet 12. Among them, the first feed pin 61 penetrates through the middle of the first ground layer 63 of the first printed circuit board 6, the middle of the third metal sheet 21, and the middle of the fourth metal sheet 22, and the first feed pin 61 is not in contact with the first ground layer 63, the third metal sheet 21, and the fourth metal sheet 22 respectively.

[0133] It can be understood that since the first feed pin 61 is disposed at the first feed end of the first printed circuit board 6, and one end of the first feed pin 61 away from the first printed circuit board 6 is connected to the feed point of the second metal sheet 12, the first printed circuit board 6 can directly feed the second metal sheet 12 by using the first feed pin 61.

[0134] At the same time, since the first feed pin 61 penetrates through the middle of the first ground layer 63, the middle of the third metal sheet 21, and the middle of the fourth metal sheet 22, and the first feed pin 61 is not in contact with the first ground layer 63, the third metal sheet 21, and the fourth metal sheet 22 respectively, the first feed pin 61 can stably feed the second metal sheet 12 while passing through the second patch antenna 2 and can also be at the weakest electric field position of the second patch antenna 2, thereby reducing the influence of the second patch antenna 2 on the first feed pin 61, and further ensuring the efficient radiation of the first patch antenna 1.

[0135] It should be noted that the first feed pin 61 is used for feeding, and the specific type of the first feed pin 61 can be set according to actual needs, and no limitation is imposed thereon.

[0136] Among them, the middle of the third metal sheet 21 and the middle of the fourth metal sheet 22 refer to the geometric center position of the second patch antenna 2, where the electric field is the weakest, and its influence on the first feed pin 61 can be ignored.

[0137] As Figure 3 shown, in some embodiments, the first feed pin 61 includes a first part 611 and a second part 612. The first part 611 is disposed at the first feed end of the first printed circuit board 6, and the first part 611 penetrates through the middle of the first ground layer 63, the middle of the third metal sheet 21, and the middle of the fourth metal sheet 22. The first part 611 is not in contact with the first ground layer 63, the third metal sheet 21, and the fourth metal sheet 22 respectively. The second part 612 is disposed at the feed point of the second metal sheet 12, and the second part 612 penetrates through one end of the first metal sheet 11. The second part 612 is not in contact with the first metal sheet 11. Among them, one end of the first part 611 away from the first printed circuit board 6 is connected to one end of the second part 612 away from the second metal sheet 12, and the first part 611 and the second part 612 do not overlap in the thickness direction of the first metal sheet 11.

[0138] It can be understood that since the first part 611 is arranged at the first feeding end of the first printed circuit board 6, and the second part 612 is arranged at the feeding point of the second metal sheet 12, one end of the first part 611 far from the first printed circuit board 6 is connected to one end of the second part 612 far from the second metal sheet 12, so that the first printed circuit board 6 can directly feed the second metal sheet 12 by using the first part 611 and the second part 612; since the second part 612 penetrates through one end of the first metal sheet 11 and the second part 612 does not contact the first metal sheet 11, the first printed circuit board 6 can couple and feed the first metal sheet 11 by using the second part 612. Thus, the high-efficiency radiation of the first metal sheet 11 and the second metal sheet 12 is ensured, and further the high-performance communication requirements of the antenna module are met.

[0139] Among them, since the first part 611 penetrates through the middle of the first grounding layer 63, the middle of the third metal sheet 21 and the middle of the fourth metal sheet 22, and the first part 611 does not contact the first grounding layer 63, the third metal sheet 21 and the fourth metal sheet 22 respectively, the first part 611 can be at the weakest electric field position of the second patch antenna 2, thereby reducing the influence of the second patch antenna 2 on the first part 611, and further ensuring the high-efficiency radiation of the first patch antenna 1.

[0140] At the same time, since the first part 611 and the second part 612 do not overlap in the thickness direction of the first metal sheet 11, and the second part 612 is connected to the feeding point of the second metal sheet 12 after penetrating through one end of the first metal sheet 11, the position of the second part 612 is not at the middle of the first patch antenna 1, but at a position offset towards one end of the first patch antenna 1. Therefore, by using the position of the second part 612, the impedance of the first patch antenna 1 can be matched, thereby ensuring the high-efficiency radiation of the first patch antenna 1.

[0141] It should be noted that the first part 611 and the second part 612 are used to form the first feeding pin 61. The specific types of the first part 611 and the second part 612 can be set according to actual needs, and there is no limitation on this. For example, the first part 611 and the second part 612 can be columnar metal structures respectively, such as Figure 5 As shown, the first grounding layer 63, the third metal sheet 21 and the fourth metal sheet 22 are provided with through holes for the first part 611 to pass through, and the first metal sheet 11 is provided with a through hole for the second part 612 to pass through.

[0142] Such as Figure 3As shown, in some embodiments, the first feed needle 61 also includes a transition portion 613, which is arranged between the first portion 611 and the second portion 612, and one end of the transition portion 613 is connected to an end of the first portion 611 away from the first printed circuit board 6, and an end of the transition portion 613 away from the first portion 611 is connected to an end of the second portion 612 away from the second metal sheet 12, wherein the transition portion 613 is located between the first metal sheet 11 and the fourth metal sheet 22, and the transition portion 613 is spaced apart from the first metal sheet 11 and the fourth metal sheet 22, respectively.

[0143] It can be understood that since one end of the transition part 613 is connected to the end of the first part 611 away from the first printed circuit board 6, and the end of the transition part 613 away from the first part 611 is connected to the end of the second part 612 away from the second metal sheet 12, the first part 611 and the second part 612 are switched by the transition part 613, thereby ensuring that the first printed circuit board 6 feeds stable power to the first patch antenna 1 while enabling the position of the second part 612 to be flexibly selected, thereby facilitating the impedance matching of the first patch antenna 1, and further ensuring the efficient radiation of the first patch antenna 1.

[0144] It should be noted that the transition part 613 is used for transition between the first part 611 and the second part 612. The specific type of the transition part 613 can be set according to actual needs and is not limited to this. For example, the transition part 613 can be a columnar metal structure. The transition part 613 is arranged in the fifth dielectric plate 16, and the transition part 613 is arranged along the plane direction of the fifth dielectric plate 16.

[0145] like Figure 3 As shown, in some embodiments, the second patch antenna 2 also includes a second feed needle 62 provided at the second feeding end of the first printed circuit board 6, and the second feed needle 62 is connected to the feeding point of the fourth metal sheet 22 at one end away from the first printed circuit board 6, wherein a plurality of second feed needles 62 respectively penetrate the first ground layer 63 of the first printed circuit board 6 and the third metal sheet 21, and the second feed needles 62 are not in contact with the first ground layer 63 and the third metal sheet 21, respectively.

[0146] It can be understood that since the second feeding pin 62 is disposed at the second feeding end of the first printed circuit board 6, and one end of the second feeding pin 62 away from the first printed circuit board 6 is connected to the feeding point of the fourth metal sheet 22, the first printed circuit board 6 can directly feed the fourth metal sheet 22 by using a plurality of second feeding pins 62; since a plurality of second feeding pins 62 respectively penetrate through the periphery of the third metal sheet 21, the first printed circuit board 6 can couple and feed the third metal sheet 21 by using a plurality of second feeding pins 62. Thus, the high-efficiency radiation of the third metal sheet 21 and the fourth metal sheet 22 is ensured, and further, the high-performance communication requirements of the antenna module are met.

[0147] It should be noted that the second feeding pin 62 is used for feeding, and the specific type of the second feeding pin 62 can be set according to actual needs, and no limitation is imposed thereon. By way of example, the second feeding pin 62 can be a columnar metal structure, such as Figure 5 As shown, the first grounding layer 63 and the third metal sheet 21 are provided with through holes for the second feeding pin 62 to pass through.

[0148] Wherein, the number of the second feeding ends of the first printed circuit board 6 is the same as the number of the second feeding pins 62, and the specific number of the second feeding pins 62 can be set according to actual needs, and no limitation is imposed thereon. By way of example, the number of the second feeding pins 62 can be four.

[0149] Such as Figure 1 、 Figure 2 and Figure 4 As shown, in some embodiments, the antenna module further includes a second printed circuit board 5. The second printed circuit board 5 is disposed on a side of the first printed circuit board 6 away from the third metal sheet 21, and the second printed circuit board 5 and the first printed circuit board 6 are spaced apart. Wherein, the first feeding end of the second printed circuit board 5 is connected to the feeding point of the first radiation arm 31, the first grounding end of the second printed circuit board 5 is connected to the grounding point of the first radiation arm 31, the second feeding end of the second printed circuit board 5 is connected to the feeding point of the second radiation arm 41, and the second grounding end of the second printed circuit board 5 is connected to the grounding point of the second radiation arm 41.

[0150] It can be understood that since the first feeding end of the second printed circuit board 5 is connected to the feeding point of the first radiation arm 31, and the first grounding end of the second printed circuit board 5 is connected to the grounding point of the first radiation arm 31, the second printed circuit board 5 can feed the first radiation arm 31 and can also provide a return ground point for the first radiation arm 31. Thus, the high-efficiency radiation of the first radiation arm 31 is ensured, and the high-performance communication requirements of the antenna module are met.

[0151] Since the second feeding end of the second printed circuit board 5 is connected to the feeding point of the second radiating arm 41, and the second grounding end of the second printed circuit board 5 is connected to the grounding point of the second radiating arm 41, the second printed circuit board 5 can send a feeding signal to the second radiating arm 41, so that the second radiating arm 41 is excited to generate a radiating current. At the same time, it can also provide a grounding point for the second radiating arm 41. Thus, the high-efficiency radiation of the second radiating arm 41 is ensured, meeting the high-performance communication requirements of the antenna module.

[0152] At the same time, since the second printed circuit board 5 is arranged on the side of the first printed circuit board 6 away from the third metal sheet 21, and the second printed circuit board 5 and the first printed circuit board 6 are arranged at intervals, the first printed circuit board 6 and the second printed circuit board 5 can be reasonably arranged in a smaller space, thus ensuring the higher radiation performance and smaller space occupation of the antenna module.

[0153] It should be noted that the second printed circuit board 5 is a printed circuit board, and the specific type of the second printed circuit board 5 can be set according to actual needs, and there is no limitation on this. For example, the second printed circuit board 5 has a second feeding layer and a second grounding layer. The second grounding layer is located on the side of the second feeding layer close to the first metal sheet 11. The first feeding end and the second feeding end of the second printed circuit board 5 are respectively arranged on the second feeding layer, and the first grounding end and the second grounding end of the second printed circuit board 5 are respectively arranged on the second grounding layer.

[0154] As Figure 4 shown, in some embodiments, a first feeding elastic sheet 51 is arranged at the first feeding end of the second printed circuit board 5, and the first feeding elastic sheet 51 abuts against the feeding point of the first radiating arm 31; a first grounding elastic sheet 52 is arranged at the first grounding end of the second printed circuit board 5, and the first grounding elastic sheet 52 abuts against the grounding point of the first radiating arm 31; a second feeding elastic sheet 53 is arranged at the second feeding end of the second printed circuit board 5, and the second feeding elastic sheet 53 abuts against the feeding point of the second radiating arm 41; a second grounding elastic sheet 54 is arranged at the second grounding end of the second printed circuit board 5, and the second grounding elastic sheet 54 abuts against the grounding point of the second radiating arm 41.

[0155] It can be understood that since a first feeding elastic sheet 51 is arranged at the first feeding end of the second printed circuit board 5, and the first feeding elastic sheet 51 abuts against the feeding point of the first radiating arm 31, the second printed circuit board 5 can use the first feeding elastic sheet 51 to feed the first radiating arm 31; since a first grounding elastic sheet 52 is arranged at the first grounding end of the second printed circuit board 5, and the first grounding elastic sheet 52 abuts against the grounding point of the first radiating arm 31, the second printed circuit board 5 can use the first grounding elastic sheet 52 to ground the first radiating arm 31. Thus, the high-efficiency radiation of the first radiating arm 31 is ensured, meeting the high-performance communication requirements of the antenna module.

[0156] Since the second power feeding terminal of the second printed circuit board 5 is provided with a second power feeding elastic sheet 53, and the second power feeding elastic sheet 53 abuts against the power feeding point of the second radiation arm 41, the second printed circuit board 5 can feed power to the second radiation arm 41 by using the second power feeding elastic sheet 53; since the second grounding terminal of the second printed circuit board 5 is provided with a second grounding elastic sheet 54, and the second grounding elastic sheet 54 abuts against the grounding point of the second radiation arm 41, the second printed circuit board 5 can use the second grounding elastic sheet 54 to realize the grounding of the second radiation arm 41. This ensures the efficient radiation of the second radiation arm 41 and meets the high-performance communication requirements of the antenna module.

[0157] It should be noted that the first power feeding elastic sheet 51, the second power feeding elastic sheet 53, the first grounding elastic sheet 52 and the second grounding elastic sheet 54 are all elastic metal sheets, and the specific types of the first power feeding elastic sheet 51, the second power feeding elastic sheet 53, the first grounding elastic sheet 52 and the second grounding elastic sheet 54 can be set according to actual needs, and no limitation is made thereto.

[0158] As Figure 6 shown, in some embodiments, the antenna module further includes a power splitter 7. The power splitter 7 is disposed on the first printed circuit board 6, and the input end of the power splitter 7 is connected to the output end of the first printed circuit board 6. The multiple output ends of the power splitter 7 are respectively connected to the multiple second power feeding terminals of the first printed circuit board 6. The power splitter 7 is used to output signals with equal amplitudes and phase differences of a third preset angle in sequence.

[0159] It can be understood that since the input end of the power splitter 7 is connected to the output end of the first printed circuit board 6, and the multiple output ends of the power splitter 7 are respectively connected to the multiple second power feeding terminals of the first printed circuit board 6, the power splitter 7 can divide the power feeding signal output by the first printed circuit board 6 into signals with equal amplitudes and phase differences of a third preset angle in sequence, so as to meet the power feeding requirements of the first printed circuit board 6 for the second patch antenna 2. At the same time, it can maximize the circular polarization performance of the antenna module and maintain good pattern symmetry of the antenna module.

[0160] It should be noted that the power splitter 7 is used for power distribution, and the specific type of the power splitter 7 can be set according to actual needs, and no limitation is made thereto. Among them, the power splitter 7 can be disposed in the first power feeding layer of the first printed circuit board 6. When the number of the second feeding pins 62 is four, the power splitter 7 has four output ends.

[0161] The third preset angle is set according to actual needs, and no limitation is made thereto. By way of example, the third preset angle can be 90 degrees.

[0162] As Figure 1As shown, in some embodiments, the antenna module further includes a box body 8, the first metal sheet 11 is disposed in the middle of the box body 8, and the first radiation arm 31 is disposed on the side wall of the box body 8.

[0163] It can be understood that, since the first metal sheet 11 is disposed in the middle of the box body 8 and the first radiation arm 31 is disposed on the side wall of the box body 8, a relatively large distance can be provided between the first metal sheet 11 and the first radiation arm 31, thereby ensuring a high isolation degree between the first metal sheet 11 and the first radiation arm 31. At the same time, through the setting of the box body 8, the integrated arrangement of the antenna module can also be realized, which is convenient for the disassembly and assembly of the antenna module.

[0164] It should be noted that the box body 8 is used to carry the first patch antenna 1, the second patch antenna 2, the first FPC antenna 3, the second FPC antenna 4, etc. The specific type of the box body 8 can be set according to actual needs, and there is no limitation thereto. By way of example, the box body 8 can be a box-shaped structure with a cuboid structure.

[0165] Based on the antenna module of this embodiment, simulation is performed to obtain the simulation curve graph as Figures 7 to 10 shown.

[0166] Among them, Figure 7 is the radiation efficiency curve graph of the first patch antenna 1 and the second patch antenna 2. The first patch antenna 1 is denoted as BDS, and the second patch antenna 2 is denoted as TT. As can be seen from Figure 7 , within each working frequency band, the efficiency can be greater than -3 dB.

[0167] Figure 8 is the circular polarization pattern when the elevation angle of the first patch antenna 1 and the second patch antenna 2 is 60°. The first metal sheet 11 of the first patch antenna 1 is denoted as Tx Beidou, the second metal sheet 12 of the first patch antenna 1 is denoted as Rx Beidou, the third metal sheet 21 of the second patch antenna 2 is denoted as Tx Tiantong, and the fourth metal sheet 22 of the second patch antenna 2 is denoted as Rx Tiantong. As can be seen from Figure 8 , the first patch antenna 1 can be greater than -4 dBic within this range, and the second patch antenna 2 can be greater than -0.5 dBic within this range.

[0168] Figure 9 is the radiation efficiency curve graph of the first FPC antenna 3 and the second FPC antenna 4. The first FPC antenna 3 is denoted as GPS, and the second FPC antenna 4 is denoted as wifi. As can be seen from Figure 9 , within each working frequency band, the efficiency can be greater than -2 dB.

[0169] Figure 10It is the isolation curve graph between the first metal sheet 11 and the first radiation arm 31, and between the second metal sheet 12 and the second radiation arm 41. The isolation between the first metal sheet 11 and the first radiation arm 31 is denoted as GPS Beidou, and the isolation between the second metal sheet 12 and the second radiation arm 41 is denoted as Wifi Beidou. From Figure 10 it can be seen that both isolations are greater than 14 dB.

[0170] The embodiment of the present disclosure also provides a vehicle, including the antenna module as in the embodiment of the present disclosure.

[0171] It can be understood that since the first metal sheet 11 operates in the first frequency band, the antenna module can communicate using the first frequency band. Since the first radiation arm 31 operates in the third frequency band, the antenna module can communicate using the third frequency band. Thus, through the integration of the first patch antenna 1 and the first FPC antenna 3, multi-band communication of the antenna module is achieved, meeting different functional requirements.

[0172] Meanwhile, since the first metal sheet 11 and the first radiation arm 31 are spaced apart along the plane direction of the first metal sheet 11, and the plane directions of the first metal sheet 11 and the first radiation arm 31 form a first preset angle, the first metal sheet 11 and the first radiation arm 31 with adjacent operating frequency bands can achieve a common aperture, and at the same time have a large spacing within a limited space, thereby reducing the influence between the first metal sheet 11 and the first radiation arm 31, improving the isolation between the first metal sheet 11 and the first radiation arm 31, and further meeting the requirements of high-performance communication of the antenna module.

[0173] It should be noted that the specific type of the vehicle can be set according to actual needs, and there is no limitation thereto. By way of example, the vehicle can be a fuel vehicle, an electric vehicle, etc.

[0174] In the description of the present disclosure, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise stated, the meaning of "a plurality" is two or more.

[0175] Any process or method description in the flowchart or described in other ways herein can be understood as representing a module, segment, or part of code including one or more executable instructions 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 manner that is not shown or discussed, including in a substantially simultaneous manner or in a reverse order according to the involved functions, which should be understood by those skilled in the technical field to which the embodiments of the present disclosure belong.

[0176] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. 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 may be combined in any one or more embodiments or examples in a suitable manner.

[0177] 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, Comprising: A first patch antenna, the first patch antenna comprising: a first metal sheet, the first metal sheet operating in a first frequency band; A first flexible printed circuit (FPC) antenna, the first FPC antenna comprising: a first radiating arm, the first radiating arm operating in a third frequency band, and the frequency difference between the first frequency band and the third frequency band being less than a first set threshold; Wherein, the first metal sheet and the first radiating arm are spaced apart along the plane direction of the first metal sheet, and the plane direction of the first metal sheet and the plane direction of the first radiating arm form a first preset angle.

2. The antenna module according to claim 1, wherein The first patch antenna further comprises: a second metal sheet, the second metal sheet and the first metal sheet being spaced apart along the thickness direction of the first metal sheet, and the second metal sheet operating in a second frequency band; The antenna module further comprises: a second FPC antenna, the second FPC antenna comprising: a second radiating arm, the second radiating arm operating in a fourth frequency band, and the frequency difference between the second frequency band and the fourth frequency band being less than a second set threshold; Wherein, the second metal sheet and the second radiating arm are spaced apart along the plane direction of the second metal sheet, and the plane direction of the second metal sheet and the plane direction of the second radiating arm form a second preset angle.

3. The antenna module according to claim 2, wherein The first frequency band is the Beidou short message transmitting frequency band, and the third frequency band is the Global Positioning System (GPS) L1 frequency band; And / or The second frequency band is the Beidou short message receiving frequency band, and the fourth frequency band is the Wireless Fidelity (WiFi) 2.4G frequency band.

4. The antenna module according to claim 2, wherein First cut corners and second cut corners are respectively provided at opposite corners of the first metal sheet, and third cut corners and fourth cut corners are respectively provided at opposite corners of the second metal sheet; Wherein, the direction from the first cut corner to the second cut corner and the direction from the third cut corner to the fourth cut corner form a third preset angle.

5. The antenna module according to claim 2, wherein The first radiating arm is provided with a first tuning slot, and the feeding point and the grounding point of the first radiating arm are respectively located on both sides of the first tuning slot; And / or The second radiating arm is provided with a second tuning slot, and the feeding point and the grounding point of the second radiating arm are respectively located on both sides of the second tuning slot.

6. The antenna module according to claim 2, wherein The first patch antenna further comprises: A first dielectric plate, the first dielectric plate being disposed on a side of the first metal sheet away from the second metal sheet, and the dielectric constant of the first dielectric plate being greater than a third set threshold; A second dielectric plate, the second dielectric plate being disposed between the first metal sheet and the second metal sheet, and the dielectric constant of the second dielectric plate being greater than a fourth set threshold.

7. The antenna module according to claim 2, wherein The antenna module further comprises: A second patch antenna, the second patch antenna comprising: a third metal sheet, the third metal sheet being disposed on a side of the first metal sheet away from the second metal sheet, and the third metal sheet being spaced apart from the first metal sheet, and the third metal sheet operating in a fifth frequency band.

8. The antenna module according to claim 7, wherein The second patch antenna further includes: A fourth metal sheet, the fourth metal sheet is disposed between the first metal sheet and the third metal sheet, and the fourth metal sheet is spaced apart from the first metal sheet and the third metal sheet respectively, and the fourth metal sheet operates in the sixth frequency band.

9. The antenna module according to claim 8, wherein The fifth frequency band is a Tian Tong transmission frequency band; And / or The sixth frequency band is a Tian Tong receiving frequency band.

10. The antenna module according to claim 8, wherein The second patch antenna further includes: A third dielectric plate, the third dielectric plate is disposed on a side of the third metal sheet away from the fourth metal sheet; A fourth dielectric plate, the fourth dielectric plate is disposed between the third metal sheet and the fourth metal sheet.

11. The antenna module according to claim 8, wherein, The first patch antenna further includes: A ground plane, the ground plane is disposed between the first metal sheet and the fourth metal sheet, and the ground plane is spaced apart from the first metal sheet and the fourth metal sheet respectively.

12. The antenna module according to claim 11, wherein The first patch antenna further includes: A fifth dielectric plate, the fifth dielectric plate is disposed between the ground plane and the fourth metal sheet.

13. The antenna module according to claim 8, wherein The antenna module further includes: A first printed circuit board, the first printed circuit board is disposed on a side of the third metal sheet away from the fourth metal sheet, and the first printed circuit board is spaced apart from the third metal sheet; Wherein, a first feeding end of the first printed circuit board is connected to a feeding point of the second metal sheet, and the first feeding end of the first printed circuit board is coupled to the first metal sheet; A plurality of second feeding ends of the first printed circuit board are respectively connected to a plurality of feeding points of the fourth metal sheet, and the plurality of second feeding ends of the first printed circuit board are respectively coupled to the third metal sheet.

14. The antenna module according to claim 13, wherein The first patch antenna further includes: The first feeding end of the first printed circuit board is provided with a first feeding pin, and an end of the first feeding pin away from the first printed circuit board is connected to the feeding point of the second metal sheet; Wherein, the first feeding pin penetrates through the middle of the first grounding layer of the first printed circuit board, the middle of the third metal sheet and the middle of the fourth metal sheet, and the first feeding pin is not in contact with the first grounding layer, the third metal sheet and the fourth metal sheet respectively.

15. The antenna module according to claim 14, wherein, The first feeding pin includes: A first part, the first part is disposed at the first feeding end of the first printed circuit board, and the first part penetrates through the middle of the first grounding layer, the middle of the third metal sheet and the middle of the fourth metal sheet, and the first part is not in contact with the first grounding layer, the third metal sheet and the fourth metal sheet respectively; A second part, the second part is disposed at the feeding point of the second metal sheet, and the second part penetrates through one end of the first metal sheet, and the second part is not in contact with the first metal sheet; Wherein, one end of the first part away from the first printed circuit board is connected to one end of the second part away from the second metal sheet, and the first part and the second part do not overlap in the thickness direction of the first metal sheet.

16. The antenna module according to claim 15, wherein The first feeding pin further includes: A transition portion, the transition portion is arranged between the first portion and the second portion, and one end of the transition portion is connected to an end of the first portion away from the first printed circuit board, and one end of the transition portion away from the first portion is connected to an end of the second portion away from the second metal sheet; Wherein, the transition part is located between the first metal sheet and the fourth metal sheet, and the transition part is spaced apart from the first metal sheet and the fourth metal sheet respectively.

17. The antenna module according to claim 13, wherein The second patch antenna further includes: The second feeding end of the first printed circuit board is provided with a second feeding needle, and an end of the second feeding needle away from the first printed circuit board is connected to a feeding point of the fourth metal sheet; The plurality of second feed needles respectively penetrate around the first grounding layer of the first printed circuit board and around the third metal sheet, and the second feed needles are not in contact with the first grounding layer and the third metal sheet.

18. The antenna module according to claim 13, wherein The antenna module also includes: a second printed circuit board, wherein the second printed circuit board is arranged on a side of the first printed circuit board away from the third metal sheet, and the second printed circuit board and the first printed circuit board are arranged at an interval; Wherein, the first feeding end of the second printed circuit board is connected to the feeding point of the first radiating arm, and the first grounding end of the second printed circuit board is connected to the grounding point of the first radiating arm; The second feeding end of the second printed circuit board is connected to the feeding point of the second radiation arm, and the second grounding end of the second printed circuit board is connected to the grounding point of the second radiation arm.

19. The antenna module according to claim 13, wherein The antenna module also includes: A power divider, wherein the power divider is arranged on the first printed circuit board, and the input end of the power divider is connected to the output end of the first printed circuit board, and the multiple output ends of the power divider are respectively connected to the multiple second feeding ends of the first printed circuit board, and the power divider is used to output multiple signals with equal amplitudes and phases that differ by a third preset angle in sequence.

20. The antenna module according to claim 1, wherein The antenna module also includes: The first metal sheet is arranged in the middle of the box body, and the first radiation arm is arranged on the side wall of the box body.

21. A vehicle, characterized in that, include: The antenna module as claimed in any one of claims 1 to 20.

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