Antenna module, laminated assembly and vehicle

Abstract

The utility model relates to an antenna module, a laminated assembly and a vehicle, and relates to the technical field of radio frequency. The antenna module comprises a first antenna unit used for supporting a first frequency band; the second antenna unit is provided with a radiation arm and a feeding point arranged on the radiation arm, the feeding point is used for accessing a feeding signal, so that the second antenna unit supports a second frequency band, the second frequency band is a low frequency band, and the frequency of the second frequency band is smaller than that of the first frequency band; wherein the radiation arms of the second antenna unit are arranged around the first antenna unit so as to inhibit surface wave transmission of the first antenna unit on the dielectric substrate. The antenna module can reduce the antenna design and manufacturing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radio frequency technology, in particular to an antenna module, a laminated assembly and a vehicle. BACKGROUND

[0002] With the rapid development of wireless communication, people's requirements for communication quality are getting higher and higher. As a daily transportation tool for people, in order to obtain better transmission efficiency and signal transmission quality, higher requirements are put forward for the antenna.

[0003] In view of this, higher requirements are needed for the design of the antenna to obtain better transmission efficiency and signal transmission quality, so as to improve the efficiency and stability of wireless communication.

[0004] The applicant finds that the antenna of the traditional scheme needs to be designed separately to improve the signal radiation efficiency, which increases the cost of the antenna. CONTENT OF THE INVENTION

[0005] Therefore, it is necessary to provide an antenna module, a laminated assembly and a vehicle which can reduce the cost of the antenna.

[0006] In a first aspect, the present application provides an antenna module applied to a laminated assembly, the antenna module being arranged on a dielectric substrate of the laminated assembly, and the antenna module comprising:

[0007] a first antenna unit, the first antenna unit being configured to support a first frequency band;

[0008] a second antenna unit, the second antenna unit having a radiation arm and a feed point arranged on the radiation arm, the feed point being configured to access a feed signal so that the second antenna unit supports a second frequency band, the second frequency band being a low frequency band, and the frequency of the second frequency band being less than the frequency of the first frequency band;

[0009] wherein the radiation arm of the second antenna unit is arranged around the first antenna unit to suppress surface wave transmission of the first antenna unit on the dielectric substrate.

[0010] In one of the embodiments, the second antenna unit multiplexes part of the radiation arm of the first antenna unit as the radiation arm of the second antenna unit.

[0011] In one of the embodiments, the first antenna unit comprises at least the first radiation arm and the second radiation arm, the first radiation arm being a radiation arm shared by the second antenna unit and the first antenna unit, the first feed point being arranged on the first radiation arm, and the second feed point being arranged on the second radiation arm.

[0012] In one of the embodiments, the antenna module further comprises:

[0013] A feeding port is connected with the first feeding point and the second feeding point respectively, so that the first radiation arm and the second radiation arm constitute a pair of arrayed dipoles.

[0014] In one of the embodiments, the first frequency band includes at least one of a middle frequency band and a high frequency band.

[0015] In one of the embodiments, the radiation arm of the first antenna unit and the radiation arm of the second antenna unit form an enclosed area.

[0016] In one of the embodiments, the radiation arm of the first antenna unit is in a bent structure.

[0017] In a second aspect, the application further provides a laminated assembly, comprising:

[0018] a medium substrate;

[0019] The antenna module as in any of the embodiments of the first aspect is arranged on the medium substrate.

[0020] In one of the embodiments, the antenna module is arranged close to an edge of the medium substrate, and the radiation arm of the second antenna unit is distributed at least on a side of the first antenna unit that is not close to the edge.

[0021] In one of the embodiments, the antenna module is arranged on a side of the medium substrate that is far from ambient light.

[0022] In a third aspect, the application further provides a vehicle, comprising:

[0023] a vehicle body;

[0024] The laminated assembly as in any of the embodiments of the second aspect is arranged on the vehicle body.

[0025] In the above antenna module, by arranging the radiation arm of the second antenna unit around the first antenna unit, the second antenna unit can support low-frequency communication and also serve as a boundary of the first antenna unit to suppress surface wave propagation of the first antenna unit on the medium substrate, thereby improving spatial radiation efficiency and enhancing communication quality of the first frequency band. The wavelength of the low-frequency signal corresponding to the second antenna unit is relatively long, and the diffraction ability of the radio frequency signal is relatively strong, so even without the constraint of the boundary, the spatial radiation efficiency can be maintained at a relatively high level, and high-quality communication in the second frequency band can be ensured.

[0026] That is, the antenna module provided in the embodiments of the application can realize multi-band communication and ensure communication quality of the first frequency band and the second frequency band by multiplexing the second radiation unit of the low frequency band as the boundary of the first antenna unit, which is conducive to reducing the size of the antenna and reducing the cost of the antenna. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative labor.

[0028] Figure 1 Structure diagram of an antenna module and a laminated assembly in one embodiment;

[0029] Figure 2 Structure diagram of an antenna module in one embodiment;

[0030] Figure 3 Structure diagram of a laminated assembly in one embodiment;

[0031] Figure 4 Structure diagram of an antenna module in one embodiment;

[0032] Figure 5 Current distribution diagram of an antenna module in one embodiment Figure 1

[0033] Test result diagram of a standing wave ratio of an antenna module under current distribution in one embodiment Figure 6 Figure 5 Test result diagram of a radiation efficiency of an antenna module under current distribution in one embodiment

[0034] Figure 7 Figure 5 Structure diagram of a vehicle in one embodiment

[0035] Figure 8 Structure diagram of a vehicle in one embodiment

[0036] Explanation of the drawings:

[0037] 1, vehicle; 10, laminated assembly; 100, antenna module; 110, first antenna unit; 111, first radiation arm; 112, first feeding point; 113, second radiation arm; 114, second feeding point; 115, shielding area; 120, second antenna unit; 130, feeding port; 200, dielectric substrate; 210, first glass plate; 220, intermediate layer; 230, second glass plate; 20, vehicle body. DETAILED DESCRIPTION

[0038] ​​For the purpose of clarity, the present application will be described in greater detail below with reference to the accompanying drawings. The embodiments of the present application are shown in the drawings. However, the present application can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the application to those skilled in the art.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0040] It should be understood that the terms "first", "second" and so on as used herein can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0041] It should be understood that "at least one" means one or more, and "multiple" means two or more. The terms "include / including", "have / having" or the like specify the presence of the stated feature, integer, step, operation, component, part or combination thereof, but do not exclude the presence or addition of one or more other features, integers, steps, operations, components, parts or combinations thereof.

[0042] In one embodiment, as shown in Figure 1 An antenna module 100 is provided, comprising a first antenna unit 110 and a second antenna unit 120.

[0043] The first antenna unit 110 is configured to support a first frequency band.

[0044] The second antenna unit 120 has a radiating arm and a feed point 112 disposed on the radiating arm. The feed point 112 is configured to access a feed signal so that the second antenna unit 120 supports a second frequency band.

[0045] The second frequency band is a low frequency band (e.g. 698MHz-960MHz), and the length of the radiating arm in the second antenna unit 120 is greater than the length of the radiating arm in the first antenna unit 110. This makes the frequency of the second frequency band supported by the second antenna unit 120 less than the frequency of the first frequency band supported by the first antenna unit 110, i.e. the frequency of the second frequency band is less than the frequency of the first frequency band.

[0046] The radiating arm of the second antenna unit 120 is disposed around the first antenna unit 110 to suppress surface wave transmission of the first antenna unit 110 on the dielectric substrate 200.

[0047] It should be noted that, as Figure 1As shown, the antenna module 100 is applied to the laminated assembly 10, and the antenna module 100 is arranged on the dielectric substrate 200 of the laminated assembly 10. The antenna module 100 can be a module of a Monopole antenna formed by silver paste printing, metal film, etc., and the laminated assembly 10 can be a composite assembly formed by laminating multiple layers of the same or different materials by adhesion, hot pressing, etc., for example, can include a composite panel of glass, PVB (Polyvinyl Butyral), etc.

[0048] The first frequency band can be determined based on communication requirements. The first frequency band and the second frequency band can be frequency bands under multiple network standards. For example, the first frequency band and the second frequency band can be communication frequency bands under network standards such as 2G (Second Generation Mobile Communication Technology), 3G (3rd Generation Mobile Communication Technology), 4G (Fourth Generation Mobile Communication Technology), 5G (5th Generation Mobile Communication Technology), 6G (six Generation Mobile Communication Technology), WiFi (Wireless Fidelity), GPS (Global Positioning System), Bluetooth, etc.

[0049] At least one of the first frequency band and the second frequency band includes a 5G communication frequency band. Compared with 4G, 5G can provide higher speed, lower latency, more connections, faster moving speed, higher security, and more flexible service deployment capability. When the first antenna unit 110 and the second antenna unit 120 are applied to the laminated assembly 10 such as vehicle glass, better communication performance can be provided, which provides a basis for the implementation and improvement of vehicle networking functions. Optionally, the first frequency band and the second frequency band are both 5G communication frequency bands to support 5G multi-frequency band communication.

[0050] For example, when the laminated assembly 10 is vehicle glass, the dielectric substrate 200 can include a single-layer or multi-layer glass panel. In this case, the antenna module 100 can be arranged on the surface or interlayer of the glass panel in a silver paste printing manner or a metal film manner.

[0051] In the antenna module 100, the radiation arm of the second antenna unit 120 is arranged around the first antenna unit 110, so that the second antenna unit 120 can support low-frequency communication and also serve as a boundary of the first antenna unit 110 to suppress the surface wave propagation of the first antenna unit 110 on the dielectric substrate 200, thereby improving the spatial radiation efficiency and improving the communication quality of the first frequency band. The wavelength of the low-frequency signal corresponding to the second antenna unit 120 is relatively long, and the diffraction ability of the radio frequency signal is relatively strong, so even without the constraint of the boundary, the spatial radiation efficiency can be maintained relatively high, and the high-quality communication in the second frequency band can be ensured.

[0052] That is, the antenna module 100 provided by the embodiment of the present application can realize multi-band communication by multiplexing the second radiation unit 120 of the low frequency band as the boundary of the first antenna unit 110, and can ensure the communication quality of the first frequency band and the second frequency band, which is beneficial to reduce the size of the antenna and reduce the cost of the antenna.

[0053] In one embodiment, as shown in Figure 1 The second antenna unit 120 multiplexes part of the radiation arm of the first antenna unit 110 as the radiation arm of the second antenna unit 120.

[0054] As shown in Figure 1 The second antenna unit 120 multiplexes the radiation arm in the first antenna unit 110, and the multiplexed radiation arm is the radiation arm 111 shared between the first antenna unit 110 and the second antenna unit 120.

[0055] In the embodiment, by sharing the radiation arm by the first antenna unit 110 and the second antenna unit 120, the compactness of the antenna layout is improved, which is beneficial to realize multi-band communication of the antenna module 100 in a smaller antenna volume.

[0056] In one embodiment, as shown in Figure 1 The first antenna unit 110 includes at least the first radiation arm 111 and the second radiation arm 113, the first radiation arm 111 is a radiation arm shared by the second antenna unit 120 and the first antenna unit 110, the first radiation arm 111 is provided with a first feeding point 112, and the second radiation arm 113 is provided with a second feeding point 114.

[0057] The first feeding point 112 and the second feeding point 114 of the antenna are used to connect the signal source through the feed line, so as to facilitate the access of the feeding signal provided by the feed source to support the radio frequency signal transceiver function.

[0058] In the embodiment, the feed points are arranged on the common radiation arm, on one hand, the feed points of the first antenna unit and the second antenna unit are shared, which is beneficial to save cost, reduce feed lines and reduce complexity of the lines; on the other hand, when the dielectric substrate is a transparent substrate such as glass, the negative effects of too many feed lines on the lighting, field of view, and aesthetic of the transparent substrate can be avoided.

[0059] In one embodiment, as shown in FIG. 1, the antenna module 100 further includes a feed port 130 connected with the first feed point 112 and the second feed point 114 respectively, so that the first radiation arm 111 and the second radiation arm 113 form a dipole. Figure 1

[0060] In the embodiment, the first radiation arm and the second radiation arm together form a structure similar to a dipole, the configuration of the dipole improves the gain and the directivity of the antenna, ensures effective reception and transmission of signals, and the symmetrical structure makes the antenna have more stable input impedance, which is convenient for matching with other radio equipment, reduces the reflection loss of the antenna, and improves the communication efficiency of the antenna module.

[0061] In one embodiment, the first frequency band includes at least one of a middle frequency band and a high frequency band.

[0062] The frequency range of the middle frequency band is 1710-2690 MHz, and the frequency range of the high frequency band is 3300-5000 MHz.

[0063] In the embodiment, in addition to propagating to the wireless space, the radio frequency signals of the middle frequency and the high frequency of the antenna module also propagate along the direction of the dielectric substrate, which leads to ineffective consumption of energy. In addition, the surface wave of the radio frequency signals of the middle and high frequencies is strong on the surface of the dielectric substrate, and the propagation distance is not as good as that of the low frequency signals. Such a strong surface wave further weakens the propagation efficiency of the high frequency signals in space. By multiplexing the radiation arm of the second antenna unit as a suppression boundary of the first antenna unit, the surface wave propagation of the radio frequency signals of the middle and high frequencies is suppressed, so that the spatial radiation efficiency of the radio frequency signals of the first frequency band is ensured, and the communication performance is improved.

[0064] In one embodiment, the radiation arm of the first antenna unit and the radiation arm of the second antenna unit form an enclosed area.

[0065] As shown in FIG. 1, the antenna module 100 further includes a feed port 130 connected with the first feed point 112 and the second feed point 114 respectively, so that the first radiation arm 111 and the second radiation arm 113 form a dipole. Figure 1 ​As shown, the end of the first radiating arm away from the first feed point 112 is connected to the second antenna unit 120, so that the radiating arm of the first antenna unit 110 and the radiating arm of the second antenna unit 120 can form an enclosed area 115, and the structure of the enclosed area 115 can form an equivalent impedance, so that the impedance of the second antenna unit 120 is closer to the resonant frequency of the low frequency band, improving the low frequency band communication quality, thereby improving the reliability and efficiency of the antenna module 100 in communication.

[0066] In one embodiment, as shown in Figure 1 The radiating arm of the first antenna unit 110 is in a bent structure.

[0067] The bent structure refers to a radiating arm structure having at least one bending point, for example, it can be realized by L-shaped (for example, as shown in Figure 2 Z-shaped (for example, as shown in Figure 1 S-shaped, etc. Figure 1 In the first antenna unit 100 in

[0068] In this embodiment, by bending the radiating arm of the first antenna unit, the flexibility of the radiating arm layout can be improved, so that the antenna radiating arm can be adaptively set according to the layout space, which is beneficial to improve the compactness of the antenna layout and reduce the overall wiring area of the antenna. When the laminated assembly is a vehicle glass, the radiating arm bending design is beneficial to at least partially or completely set the antenna module in the black border area of the vehicle glass, reducing the negative impact on the lighting and field of view of the vehicle glass.

[0069] In one embodiment, as shown in Figure 2 The radiating arm of the first antenna unit 110 can be regarded as a whole as a symmetrical array, mainly used to support medium and high frequency communication, i.e. communication in the frequency range of 1710MHz-2690MHz, 3300MHz-4200MHz and 4400MHz-5000MHz. The radiating arm of the second antenna unit 120 is long in size and mainly supports low frequency communication, i.e. communication in the frequency range of 700MHz-960MHz. The first antenna unit 110 and the second antenna unit 120 together can support 5G full-band communication.

[0070] As shown in Figure 2The antenna module 100 shown is found to cover three frequency bands of 700MHz-960MHz, 1710MHz-2690MHz and 3300MHz-5000MHz in the test of 5G communication mode. In the above frequency bands, the VSWR (Voltage Standing Wave Ratio) of the antenna module 100 is less than or equal to 3, the energy transmission efficiency is high, the reflection loss is small, and the communication quality of the antenna module 100 in the above frequency bands is good.

[0071] In one embodiment, as shown in Figure 3 The application also provides a laminated assembly 10, which comprises a dielectric substrate 200 and the antenna module 100 in any of the above embodiments.

[0072] The antenna module 100 is arranged on the dielectric substrate 200. The dielectric substrate 200 can be a single-layer or multi-layer structure. For example, when the laminated assembly 10 is a vehicle glass, the dielectric substrate 200 can be a single-layer glass. The dielectric substrate 200 can also have the structure as shown in Figure 3 Specifically, the dielectric substrate 200 of the laminated assembly 10 comprises a first glass plate 210, an intermediate layer 220 and a second glass plate 230 arranged in sequence, wherein the intermediate layer 220 can be a PVB layer.

[0073] The laminated assembly with the above antenna module can realize high-quality communication in multiple frequency bands by multiplexing the radiation arms of the second antenna unit as the suppression boundary of the first antenna unit to realize high-quality communication in the first frequency band. In addition, the low-frequency radiation efficiency is less affected by the surface wave transmission on the dielectric substrate, thereby ensuring high-quality communication in the second frequency band. That is, in the case of ensuring high-quality communication in multiple frequency bands, the antenna module is miniaturized, the cost of the antenna is reduced, and the overall cost of the laminated assembly is reduced.

[0074] In one embodiment, the antenna module is arranged near the edge of the dielectric substrate, and the radiation arms of the second antenna unit are distributed on at least one side of the first antenna unit away from the edge.

[0075] Arranging the antenna module near the edge of the dielectric substrate can be beneficial to reduce the influence of the antenna module on the light collection, field of view, etc. in the non-edge area of the laminated assembly.

[0076] In one embodiment, the radiating arms of the second antenna unit can be distributed on the side of the first antenna unit that is not near the edge. In this configuration, by utilizing the condition that the first antenna unit is located near the edge, simply by wrapping the radiating arms of the second antenna unit around the side of the first antenna unit that is not near the edge, most of the surface wave propagation of the first frequency band radio frequency signal on the dielectric substrate can be suppressed (the surface wave propagation of the first frequency band radio frequency signal along the edge direction is very small). This helps to reduce the routing of the radiating arms of the second antenna unit, lowers the cost of the antenna module, and thus reduces the overall cost of the stacked assembly.

[0077] In one embodiment, when the stacked assembly is installed on a vehicle, the edge of the antenna module on the stacked assembly faces the metal frame of the vehicle body. The radiating arm of the second antenna unit and the metal frame can fully surround the antenna module, thereby suppressing the propagation of the energy wave of the first frequency band radio frequency signal on the surface of the dielectric substrate, improving the communication efficiency of the antenna module on the dielectric substrate, and thus improving the overall communication performance of the stacked assembly.

[0078] like Figure 4 As shown, the radiating arms of the second antenna unit 120 can extend to surround the first antenna unit 110. Here, no specific restrictions are placed on the distribution position of the radiating arms of the second antenna unit 120, as long as they can completely surround the first antenna unit 110. This will not be elaborated further. For example, when the antenna module is not designed on the edge of the dielectric substrate, the radiating arms of the second antenna unit can extend to surround the first antenna unit to suppress the surface wave propagation of the first antenna unit in all directions on the dielectric substrate.

[0079] In one embodiment, the radiating arm of the second antenna element may have a slot, which can reduce antenna wiring material and lower the cost of the antenna module. However, it should be understood that the size of the slot should not be too large, and should be set to ensure electromagnetic coupling between the radiating branches on both sides of the slot in the low-frequency band.

[0080] In one embodiment, such as Figure 3 As shown, the antenna module 100 is located on the side of the dielectric substrate 200 that is away from ambient light. Here, the side of the dielectric substrate 200 away from ambient light refers to the side of the dielectric substrate 200 that is relatively away from ambient light when the stacked assembly 10 is installed on a vehicle.

[0081] In this embodiment, the antenna module 100 is located on the side of the dielectric substrate 200 away from ambient light, which is beneficial for the power supply routing of the power supply point. It eliminates the need to drill holes in the dielectric substrate 200, reducing the difficulty of installing the antenna module 100 and improving the ease of installation.

[0082] When the dielectric substrate is a single-layer glass, the antenna module is disposed on the inner side of the single-layer glass. When the dielectric substrate includes at least a first glass plate and a second glass plate, wherein the second glass plate is disposed away from ambient light relative to the first glass plate, the antenna module can be disposed on the side of the second glass plate away from the first glass plate.

[0083] like Figure 3 As shown, the antenna module 100 can be disposed on any surface or in the interlayer of the dielectric substrate of the stacked assembly 10, for example, it can be disposed on such as Figure 3 The first glass plate 210 shown can be located on the side away from the intermediate layer 220, or it can be located between the first glass plate 210 and the intermediate layer 220, or between the second glass plate 230 and the intermediate layer 220, or on the side of the second glass plate 230 away from the intermediate layer 220.

[0084] To better illustrate the implementation process of the antenna module and stacked assembly provided in the embodiments of this application, the stacked assembly having the following characteristics is used here as an example. Figure 5 The antenna module structure shown is illustrated with an example:

[0085] The first antenna element 110 and the second antenna element 120 share a portion of the radiating arm. The feed signal is connected to the feed point on the first antenna element 110 (the point on the radiating arm connected to the feed port) via the feed port 130, forming a signal on the radiating arm of the first antenna element 110 as shown in the image. Figure 5 The current distributions I11 and I12 are shown. Under current distribution I11, high-frequency communication is supported, while under current distribution I12, mid-frequency communication is supported. The feed signal is fed into the feed point on the second antenna unit 120 via feed port 130, and forms a signal on the radiating arm of the second antenna unit 120 as shown. Figure 5 The current distribution I2 shown is transmitted from the feed point to the end of the radiating arm, and its effective electrical length supports low-frequency communication.

[0086] For example Figure 5 The stacked component 10 shown was tested, and the results were as follows: Figure 6 The VSWR curve shown is based on Figure 6 As can be seen from the curve, the VSWR distributions in the mid-, low-, and high-frequency bands are as shown in Table 1 below:

[0087] Table 1. Distribution of Standing Wave Ratio

[0088]

[0089] Based on Table 1, it can be known that, in the 5G full frequency band, the standing wave ratio of the antenna module is less than 3, the standing wave ratio less than 3 indicates that the reflection coefficient is less than 1 / 2, which indicates that the antenna module and the feed line are well matched, the energy transmission efficiency is high, the reflection loss is small, that is, the antenna module carried by the laminated assembly provided in the embodiment has high-quality communication performance in the 5G full frequency band.

[0090] The laminated assembly 10 as shown in Figure 5 was subjected to 5G communication test, and the radiation efficiency curve as shown in Figure 7 was also obtained, and according to Figure 7 the efficiency distribution table of different frequency bands shown in Table 2 below can be obtained:

[0091] Table 2 Antenna efficiency distribution table

[0092]

[0093] Based on Table 2, it can be known that, in the 5G frequency band, the radiation efficiency of the antenna module is greater than 50%, the radiation efficiency is high, that is, the antenna module carried by the laminated assembly provided in the embodiment can realize high-efficiency radiation in the 5G full frequency band, and the communication quality is good.

[0094] In one embodiment, as shown in Figure 8 , the application also provides a vehicle 1, which comprises a vehicle body 20 and a laminated assembly 10 as in any of the above embodiments. Wherein, the laminated assembly 10 is arranged on the vehicle body 20.

[0095] The vehicle carrying the above laminated assembly has low cost, can support multi-band communication, and has good radiation efficiency and communication quality in multiple frequency bands.

[0096] In one embodiment, the laminated assembly can be a vehicle glass. For example, side window, sunroof, windshield, etc. Here is not exhaustive.

[0097] In the description of the present specification, the description referring to the terms "some embodiments", "other embodiments", and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0098] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description simple, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present specification.

[0099] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An antenna module, characterized in that, An antenna module is used in a multilayer assembly, wherein the antenna module is disposed on a dielectric substrate of the multilayer assembly, and the antenna module includes: A first antenna element, wherein the first antenna element is used to support a first frequency band; The second antenna element has a radiating arm and a feed point disposed on the radiating arm. The feed point is used to receive a feed signal so that the second antenna element supports a second frequency band, which is a low frequency band and the frequency of the second frequency band is lower than the frequency of the first frequency band. The radiating arm of the second antenna unit is arranged around the first antenna unit to suppress the surface wave transmission of the first antenna unit on the dielectric substrate.

2. The antenna module according to claim 1, characterized in that, The second antenna unit reuses part of the radiating arm of the first antenna unit as the radiating arm of the second antenna unit.

3. The antenna module according to claim 2, characterized in that, The first antenna element includes at least a first radiating arm and a second radiating arm. The first radiating arm is a radiating arm shared by the second antenna element and the first antenna element. The first radiating arm is provided with a first feed point, and the second radiating arm is provided with a second feed point.

4. The antenna module according to claim 3, characterized in that, The antenna module also includes: The power supply ports are connected to the first power supply point and the second power supply point respectively, so that the first radiating arm and the second radiating arm form a pair of oscillators.

5. The antenna module according to claim 1, characterized in that, The first frequency band includes at least one of the mid-frequency band and the high-frequency band.

6. The antenna module according to claim 1, characterized in that, The radiating arm of the first antenna element and the radiating arm of the second antenna element form an enclosed area.

7. The antenna module according to claim 1, characterized in that, The radiating arm of the first antenna element has a bent structure.

8. A stacked component, characterized in that, include: Dielectric substrate; The antenna module as described in any one of claims 1 to 7 is disposed on the dielectric substrate.

9. The stacked component according to claim 8, characterized in that, The antenna module is disposed near the edge of the dielectric substrate, and the radiating arms of the second antenna unit are distributed at least on the side of the first antenna unit that is not near the edge.

10. A means of transportation, characterized in that, include: Body; The stacked assembly as described in claim 8 or 9, wherein the stacked assembly is disposed on the vehicle body.

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