Manufacturing method of antenna assembly, antenna module and communication equipment

Abstract

The invention provides a manufacturing method of an antenna assembly, an antenna module and communication equipment. The antenna assembly comprises a dielectric body, a first radiation sheet, an intermediate transmission line and a second radiation sheet, the first radiation sheet, the intermediate transmission line and the second radiation sheet are sequentially laminated, the first radiation sheet and the second radiation sheet are at least partially overlapped, and the dielectric body forms a first dielectric layer between the first radiation sheet and the intermediate transmission line and forms a second dielectric layer between the intermediate transmission line and the second radiation sheet. The first dielectric layer and the second dielectric layer are respectively provided with a through hole, and coupling between the first radiation sheet and the middle transmission line and coupling between the middle transmission line and the second radiation sheet are respectively realized through conductive columns in the corresponding through holes. According to the invention, the size of the UWB antenna can be reduced, the resonant frequency, bandwidth and efficiency are improved, the isolation between adjacent antennas is improved, and the directivity of the antenna is more stable; besides, by adjusting the lengths of the two branches and the width and depth of each slot, the standing wave performance of the antenna can be stabilized while the double resonance is realized.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to a method for manufacturing an antenna assembly, an antenna module and a communication device. Background Art

[0002] With the rapid development of smart devices and the Internet of Things (IoT), integration, miniaturization, low latency, and high transmission rates have become the development trend of future smart communication devices. As the space for smart communication devices becomes smaller and smaller, the surrounding metal environment becomes more and more complex, which leads to limited antenna design space. It is difficult to ensure that the performance of the antenna meets the design requirements in a limited space. Taking UWB (Ultra Wide Band) antennas as an example, traditional steel sheet UWB antennas and PCB UWB antennas have a large footprint and poor stability. They are easily affected by the surrounding metal, resulting in poor performance. At the same time, they are not isolated enough from other antennas, and electromagnetic interference will occur between antennas, resulting in low efficiency. Summary of the invention

[0003] In view of this, the present application provides a method for manufacturing an antenna assembly, an antenna module and a communication device, which can improve the problems of insufficient miniaturization, low bandwidth, low efficiency and poor isolation between antennas of traditional UWB antennas.

[0004] The present application provides a method for manufacturing an antenna assembly, comprising:

[0005] providing a first radiation sheet;

[0006] forming a first dielectric layer on the first radiation plate;

[0007] forming a first through hole penetrating the first dielectric layer and a first conductive column in the first through hole;

[0008] forming an intermediate transmission line on the first dielectric layer, wherein the intermediate transmission line and the first radiation sheet are coupled via the first conductive column;

[0009] forming a second dielectric layer covering the first dielectric layer on the intermediate transmission line;

[0010] forming a second through hole penetrating the second dielectric layer and a second conductive column in the second through hole;

[0011] A second radiation plate is formed on the second dielectric layer. The second radiation plate and the intermediate transmission line are coupled via the second conductive column. The second radiation plate and the first radiation plate at least partially overlap.

[0012] Optionally, forming a second radiation sheet on the second dielectric layer includes:

[0013] Disposing a rectangular radiation sheet on the second dielectric layer;

[0014] The radiation sheet is patterned to form the second radiation sheet, which includes a main body, a first branch and a second branch, wherein the first branch and the second branch are arranged on opposite sides of the main body, and the lengths of the first branch and the second branch are unequal.

[0015] Optionally, forming a second radiation sheet on the second dielectric layer includes:

[0016] Disposing a rectangular radiation sheet on the second dielectric layer;

[0017] The radiation sheet is patterned to form the second radiation sheet, which includes a main body, a first branch and a second branch, wherein the first branch and the second branch are arranged on opposite sides of the main body, a first gap is formed between the first branch and the main body, and a second gap is formed between the second branch and the main body.

[0018] Optionally, the widths of the first gap and the second gap are not equal.

[0019] Optionally, at least one of the first dielectric layer and the second dielectric layer is formed using FR-4 material.

[0020] Optionally, providing a first radiation sheet includes:

[0021] Providing a rectangular radiation sheet;

[0022] A hollow area is formed on the radiation sheet, and an auxiliary conductive sheet is arranged in the hollow area. The auxiliary conductive sheet is arranged opposite to each edge of the hollow area. The first conductive column couples the auxiliary conductive sheet with the intermediate transmission line so that the auxiliary conductive sheet serves as a feeding point of the antenna assembly.

[0023] The present application provides an antenna module, comprising:

[0024] Medium body;

[0025] At least two antenna components are manufactured by the method described in any one of the above items. The first dielectric layer and the second dielectric layer of each antenna component serve as a part of the dielectric body. Adjacent antenna components are arranged relative to each other, and a defective structure is arranged between adjacent antenna components.

[0026] Optionally, adjacent antenna components are symmetrically arranged along the defect, or second radiation plates of adjacent antenna components are symmetrically arranged along the defect.

[0027] Optionally, adjacent antenna components are fed and coupled to a circuit board via a coaxial line.

[0028] The present application provides a communication device, comprising an antenna module as described in any one of the above items.

[0029] As described above, in the antenna assembly, antenna module and communication equipment of the present application, each antenna assembly includes a first radiating plate and a second radiating plate that are layered, so that the footprint of the entire antenna can be smaller, meeting the requirements of miniaturized design, and being applicable to a wider range of communication equipment. It is highly versatile, and by reasonably changing the size of any radiating plate to adjust the overlapping area of ​​the two radiating plates, the resonant frequency of the antenna can be better adjusted, so that the bandwidth and efficiency can be effectively improved. In addition, by setting a defective ground between two adjacent antenna assemblies, the isolation between adjacent antennas can be greatly improved, reducing the impact on the radiation direction of the antenna, making the directivity of the antenna more stable, and facilitating the consistency of the antenna design.

[0030] Furthermore, the present application designs the second radiation plate to have two branches, and two gaps are formed between each branch and the main body of the second radiation plate, so that each antenna component can form a double resonance, thereby improving the frequency coverage range and improving signal stability; in addition, by adjusting the length of each branch and the width and depth of each gap, the standing wave performance of the antenna can be stabilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a structural schematic diagram of an antenna module provided in an embodiment of the present application;

[0032] Figure 2 yes Figure 1 A schematic structural diagram of the antenna module from another perspective;

[0033] Figure 3 yes Figure 1 The antenna module shown exposes a schematic diagram of two antenna components;

[0034] Figure 4 It is a schematic diagram of the structure of each layer of an antenna module of the present application;

[0035] Figure 5 is a curve diagram of the S11 parameters of the two antenna components of the present application;

[0036] Figure 6 is a schematic diagram of an isolation curve between two antenna components of the present application;

[0037] Figure 7 is a PDoA response diagram generated by the antenna module of the present application according to the source polarization;

[0038] Figure 8 It is a schematic diagram of the radiation direction of the two antenna components of the present application in the horizontal and vertical directions;

[0039] Fig. 9 is a structural schematic diagram of a remote control pen with an antenna module provided in an embodiment of the present application;

[0040] Fig.10 It is a schematic flow chart of a method for manufacturing an antenna assembly provided in an embodiment of the present application.

[0041] The first direction is x, the second direction is y, and the third direction is z;

[0042] Antenna module 100, dielectric body 1, defective ground 2, antenna component 3, first antenna component 3a, second antenna component 3b, first radiation plate 31, intermediate transmission line 312, second radiation plate 32, first dielectric layer 11, second dielectric layer 12, first through hole 110, second through hole 120, first conductive column 111, second conductive column 121, hollow area 310, auxiliary conductive sheet 33, main body 320, first branch 321, second branch 322, first gap 323, second gap 324, remote control pen 200, main body 201. DETAILED DESCRIPTION

[0043] In order to solve the above-mentioned technical problems existing in the prior art, in the antenna assembly, antenna module and communication equipment of the present application, the radiation plates of each antenna assembly are stacked so that the footprint of the entire antenna meets the requirements of miniaturized design, and the overlapping area between these radiation plates is adjusted by reasonably changing the size of any radiation plate, so as to adjust the resonant frequency of the antenna and improve the bandwidth and efficiency; in addition, by setting a defective ground between two adjacent antenna assemblies, the isolation between adjacent antennas is improved.

[0044] Furthermore, the second radiation plate can be designed to have two branches, and two gaps are formed between each branch and the main body of the second radiation plate, so that each antenna component can form a double resonance, thereby improving the frequency coverage range and improving the signal stability; in addition, by adjusting the length of each branch and the width and depth of each gap, the standing wave performance of the antenna can be stabilized.

[0045] The specific expression of parameters such as shape, quantity, size, etc. of each radiation piece, defective land, and branch can be determined according to the adaptability required by the actual scene, and this application is not limited.

[0046] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly described below in conjunction with specific embodiments and corresponding drawings. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. In the absence of conflict, the following embodiments and their technical features can be combined with each other and also belong to the technical solutions of the present application.

[0047] In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length",

[0048]

[0049] The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the corresponding embodiments. They do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation on the present application.

[0050] Please also read Figures 1 to 4 As shown, an antenna module 100 of an embodiment of the present application includes a dielectric body 1, a defective ground 2, and at least two antenna components 3. The number and position of the antenna components 3 and the defective ground 2 can be determined according to the adaptability of actual needs, and the present application does not limit them. The two antenna components 3 and one defective ground 2 are provided in the figure for exemplary display only. For the convenience of description, the two antenna components 3 are respectively referred to as "first antenna component 3a" and "second antenna component 3b" herein.

[0051] The dielectric body 1 constitutes the main structural part of the entire antenna module 100, and can be formed by sequentially stacking the following dielectric layers. The dielectric body 1 can be a FR-4 structural part. The FR-4 material is mainly composed of glass fiber and resin, and has good electrical insulation performance, high mechanical strength and thermal stability, so that the antenna module 100 can withstand high mechanical stress and hot and cold cycles.

[0052] For ease of description and understanding, in combination with the placement orientation shown in the figure, the length direction of the antenna module 100 is called the first direction x, the height direction or the thickness direction is called the second direction y, and the width direction is called the third direction z. The first direction x, the second direction y and the third direction z are perpendicular to each other and can be regarded as the three coordinate axes of the three-dimensional rectangular coordinate system. It should be understood that the so-called verticality in the whole application does not require that the angle between the two must be 90°, but allows a deviation of, for example, ±10°, that is, the so-called verticality can be understood as the angle between any two directions is 80° to 100°. Similarly, the so-called parallelism does not require that the angle between the two must be 0° or 180°, but allows a deviation of, for example, ±10°, that is, the so-called parallelism can be understood as the angle between any two directions is 0° to 10° or 170° to 190°.

[0053] The antenna assembly 3 is combined with the dielectric body 1. Figure 4 As shown, a single antenna component 3 is also provided with a dielectric body, but the dielectric body of the single antenna component 3 can be regarded as a part of the dielectric body 1. Two adjacent antenna components 3 are arranged relative to each other, and the so-called relative arrangement can be understood as: on the plane where the dielectric body 1 is located or on the plane parallel to the dielectric body 1, along the line of sight of the first direction x, the distance between the two adjacent antenna components 3 is not equal to zero.

[0054] The defective ground 2 is located between two adjacent antenna components 3. The defective ground 2 can be defined by the dielectric body 1. For example, Figure 1 In the example shown, the dielectric body 1 is not protruding between two adjacent antenna components 3, so that the defective ground 2 can be formed. The main function of the defective ground 2 is to reduce or eliminate the mutual interference between two adjacent antenna components 3, ensuring that each antenna component 3 can work independently and efficiently. Of course, the defective ground 2 can also have traditional effects in the field, such as suppressing the mutual coupling between two adjacent antenna components 3, thereby improving the efficiency and gain of the entire antenna module 100.

[0055] Any antenna component 3 can be implemented as a separate antenna, including but not limited to a UWB antenna. The structures of the antenna components 3 can be exactly the same, but they are symmetrically arranged along the defect 2, or they can include components with the same name, but the sizes and shapes of the components are different. Figure 4As shown, a single antenna assembly 3 includes a first radiation sheet 31, an intermediate transmission line 312 and a second radiation sheet 32 ​​which are sequentially layered. The first radiation sheet 31 and the second radiation sheet 32 ​​at least partially overlap along the second direction y. The dielectric body 1 forms a first dielectric layer 11 between the first radiation sheet 31 and the intermediate transmission line 312, and a second dielectric layer 12 between the intermediate transmission line 312 and the second radiation sheet 32. The first dielectric layer 11 is provided with a through hole 110, which can be called a first through hole 110, and the second dielectric layer 12 is provided with a through hole, which can be called a second through hole 120. The first radiation sheet 31 and the intermediate transmission line 312 are coupled through a conductive column 111 (which can be called a first conductive column 111) disposed in the first through hole 110, and the intermediate transmission line 312 and the second radiation sheet 32 ​​are coupled through a conductive column 121 (which can be called a second conductive column 121) disposed in the second through hole 120. In this way, the first radiation sheet 31 and the second radiation sheet 32 ​​are jointly implemented as the radiation sheet of the antenna assembly 3.

[0056] The materials of the first dielectric layer 11 and the second dielectric layer 12 can be the same, for example, both are the aforementioned FR-4 material, so as to form the dielectric layer of each antenna component 3, which plays the role of supporting the antenna radiation plate and adjusting the dielectric constant. For example, by adjusting the thickness of any dielectric layer, the dielectric constant between the first radiation plate 31 and the second radiation plate 32 can be adjusted.

[0057] The first radiation sheet 31, the intermediate transmission line 312 and the second radiation sheet 32 ​​can be made of the radiation sheet material of the conventional related antenna, and the materials of the first conductive column 111 and the second conductive column 121 can be completely the same as the materials of the first radiation sheet 31 and the second radiation sheet 32, or they can be different. The first through hole 110 and the second through hole 120 can be formed by etching and other processes. The setting of the intermediate transmission line 312 can make the positions of the first through hole 110 and the second through hole 120 flexibly set, that is, the positions of the first conductive column 111 and the second conductive column 121 can be flexibly set, so that the positions of the subsequent auxiliary conductive sheet 33 and the feeding point can be adaptively set.

[0058] Each antenna component 3 can be independently produced, manufactured and sold as a complete device. For any antenna component 3, the first dielectric layer 11 and the second dielectric layer 12 form the dielectric body 1 of the antenna component 3, which not only completely exposes the first radiation plate 31 and the second radiation plate 32 to the dielectric body 1, but also supports the two radiation plates and adjusts the dielectric constant of the antenna.

[0059] Based on the above, in the antenna module 100 of the present application, each antenna component 3 includes two stacked radiation plates 31 and 32, which can make the entire antenna occupy a smaller area, meet the requirements of miniaturization design, and be applicable to more types of communication equipment, with strong versatility. For example, the size of a single antenna component 3 can be realized as (length L is) 7.5mm*(width D is) 6.5mm*(height H is) 1.6mm, and the size of a single antenna is extremely small, which is convenient for integration into various types of equipment.

[0060] In addition, multiple antenna components 3 can realize a multi-antenna design, which is beneficial to the high-precision positioning of the antenna module 100. By setting a defect ground 2 between two adjacent antenna components 3, the isolation between adjacent antennas (i.e., two adjacent antenna components 3) can be greatly improved, reducing the impact on the radiation direction of the antenna, making the directivity of each antenna more stable, which is beneficial to the consistency of the antenna design.

[0061] Please continue to read Figures 1 to 4 As shown, the first radiation sheet 31 may be provided with a hollow area 310, and the antenna assembly 3 further includes an auxiliary conductive sheet 33, which is arranged in the hollow area 310, and the edge of the first radiation sheet 31 is arranged relative to each edge of the hollow area 310, so as to serve as the feed point of the antenna assembly 3. The hollow area 310 and the first radiation sheet 31 may both be rectangular. Taking a rectangle as an example, the two long sides of the hollow area 310 may be arranged relative to the two long sides of the first radiation sheet 31, and the two short sides of the hollow area 310 may be arranged relative to the two short sides of the first radiation sheet 31. It should be noted that the distance between adjacent edges meets the design requirements for realizing the feed point. The auxiliary conductive sheet 33 and the first radiation sheet 31 are located on the same plane, or in other words, the auxiliary conductive sheet 33 is located on the plane where the first radiation sheet 31 is located. From another perspective, the auxiliary conductive sheet 33 can be regarded as a part of the first radiation sheet 31.

[0062] In addition, a so-called slot antenna can be formed between the first radiation plate 31 and the edge of the hollow area 310. By adjusting the distance between the first radiation plate 31 and the edge of the hollow area 310, the operating frequency of the slot antenna can be adjusted and the return loss of the slot antenna can be controlled.

[0063] Each antenna assembly 3 can be soldered to a circuit board (not shown) through the auxiliary conductive sheet 33, so as to be electrically coupled to the circuit board. Other structural parts except the auxiliary conductive sheet 33, such as the first radiation sheet 31, do not need to be electrically coupled to the circuit board. In one example, adjacent antenna assemblies 3 can be electrically coupled to the circuit board through a coaxial line.

[0064] Continue to read Figures 1 to 3 As shown, the second radiation piece 32 includes a main body 320, a first branch 321 and a second branch 322, wherein the first branch 321 and the second branch 322 are disposed on opposite sides of the main body 320, and the lengths of the first branch 321 and the second branch 322 are unequal. Further, a first gap 323 is formed between the first branch 321 and the main body 320, and a second gap 324 is formed between the second branch 322 and the main body 320, and the widths of the first gap 323 and the second gap 324 may be unequal. The second radiation pieces 32 of adjacent antenna assemblies 3 may be symmetrically disposed along the defect ground 2.

[0065] Here, the present application designs the second radiation plate 32 to have two branches 321, 322, and two gaps 323, 324 are formed between each branch and the main body 320 of the second radiation plate 32, so that each antenna component 3 can form a double resonance, thereby improving the frequency coverage range and improving the signal stability; in addition, by adjusting the length of each branch and the width and depth of each gap, the standing wave performance of the antenna can be stabilized.

[0066] In other examples, a microstrip line may be provided on the circuit board, and the microstrip line is coupled and fed with one of the first radiation plate 31 and the auxiliary conductive plate 33. The coupled feeding of each antenna component 3 is realized by the microstrip line, and the bandwidth of each antenna can be improved by the coupled feeding, while reducing the influence on the radiation direction of the antenna. Taking the coupled feeding with the auxiliary conductive plate 33 as an example, a third dielectric layer may be provided between the microstrip line and the auxiliary conductive plate 33 along the stacking direction (i.e., the second direction y), and the third dielectric layer may be a part of the dielectric body 1. The microstrip line and the auxiliary conductive plate 33 are arranged relative to each other through the third dielectric layer, so as to realize the coupled feeding. In the actual scene, the relative distance between the microstrip line and the auxiliary conductive plate 33 along the stacking direction is in the millimeter level, that is, the thickness of the third dielectric layer is in the millimeter level, for example, about 0.5 mm. The relative distance of the millimeter level can ensure good coupled feeding between the microstrip line and the auxiliary conductive plate 33, and at the same time ensure that the auxiliary conductive plate 33 will not be exposed, that is, the third dielectric layer can achieve better protection for the auxiliary conductive plate 33.

[0067] for Figures 1 to 4 The antenna module 100 of the structure shown in FIG. 1 is a UWB antenna in which each antenna component 3 is a UWB antenna. Figure 5 The curve diagram of the S11 parameters of the two antenna components 3 shown in FIG. 1 is a curve diagram of the S11 parameters of the two antenna components 3. The S11 parameter refers to the reflection coefficient at the input end of the antenna component 3, which is used to measure the matching degree between the antenna component 3 and the transmission line. Figure 5As shown, when the resonant frequency is between 7.6 and 8.4 GHz, the bandwidths of the two antenna components 3 are both greater than 800 MHz, and the S11 parameters are both less than -10 dB, making the performance of the two antennas relatively superior. In addition, each antenna component 3 can form a dual resonance.

[0068] Combination Figure 6 From the schematic diagram of the isolation curve between the two antenna components 3 shown, it can be seen that the maximum isolation between the two antenna components 3 is below -15dB, and the interference between two adjacent antenna components 3 is very low, which is conducive to meeting the stable performance requirements of the communication equipment.

[0069] Combination Figure 7 The PDoA (Phase Difference of Arrival) response diagram (simulated CH9) generated according to the source polarization is shown, wherein the horizontal axis represents the incident angle (AOA, Angle of Arrival, also known as the arrival angle) of the signal reaching the antenna module 100, and the vertical axis represents the signal amplitude. It can be seen that as the signal amplitude increases, the incident angle increases. Here, the position of the signal source can be determined more accurately by measuring the incident angle of the signal, and centimeter-level positioning accuracy can be achieved. At the same time, the AOA technology can adapt to different environmental conditions, such as maintaining high-precision positioning in multipath effects and occlusion environments.

[0070] Combination Figure 8 The schematic diagram of the radiation direction of the two antenna components 3 in the horizontal and vertical directions shows that the 3dB lobe width of the two antenna components 3 in these two directions is greater than 120deg., with good directivity and sufficient radiation width, which can adapt to different environmental conditions to maintain high-precision positioning.

[0071] The present application also provides a communication device, including the antenna module 100 of any of the above embodiments, so that the beneficial effects of the antenna module 100 of the corresponding embodiment can be produced. The specific form of the communication device is not limited by the present application, for example, it can be a remote control pen, a smart phone, etc.

[0072] Take the remote control pen as an example, combined with the communication device Fig. 9 As shown, the remote control pen 200 includes a body 201 and an antenna module 100. The antenna module 100 can be arranged at one end of the body 201. The circuit board built into the body 201 can be coupled and fed with the auxiliary conductive sheet 33 of each antenna assembly 3 through, for example, a coaxial line. One end of the body 201 can be fixed to the dielectric body 1 of the antenna module 100, specifically to the first dielectric layer 11 of the dielectric body 1, so that the antenna module 100 is fixedly assembled to the end of the remote control pen 200.

[0073] The present application also provides a method for manufacturing an antenna assembly. Fig.10 As shown, including:

[0074] S101: providing a first radiation sheet;

[0075] S102: forming a first dielectric layer on the first radiation plate;

[0076] S103: forming a first through hole penetrating the first dielectric layer and a first conductive column in the first through hole;

[0077] S104: forming an intermediate transmission line on the first dielectric layer, and coupling between the intermediate transmission line and the first radiation plate is achieved through a first conductive column;

[0078] S105: forming a second dielectric layer covering the first dielectric layer on the intermediate transmission line;

[0079] S106: forming a second through hole penetrating the second dielectric layer and a second conductive pillar in the second through hole;

[0080] S107: forming a second radiation plate on the second dielectric layer, coupling between the second radiation plate and the intermediate transmission line is achieved through a second conductive column, and the second radiation plate and the first radiation plate at least partially overlap.

[0081] The method can be used to manufacture Figures 1 to 4 The antenna assembly 3 shown can therefore produce the beneficial effects that can be produced by the antenna assembly 3 of any of the aforementioned embodiments and the antenna module 100 to which the antenna assembly 3 is applicable, which will not be described in detail here.

[0082] For example, the second radiation plate is formed on the second dielectric layer, including: setting a rectangular radiation plate on the second dielectric layer; patterning the radiation plate to form the second radiation plate, the second radiation plate including a main body, a first branch and a second branch, the first branch and the second branch are arranged on opposite sides of the main body, and the lengths of the first branch and the second branch are not equal.

[0083] For example, the second radiation sheet is formed on the second dielectric layer, including: arranging a rectangular radiation sheet on the second dielectric layer; patterning the radiation sheet to form the second radiation sheet, the second radiation sheet including a main body, a first branch and a second branch, the first branch and the second branch are arranged on opposite sides of the main body, a first gap is formed between the first branch and the main body, and a second gap is formed between the second branch and the main body. The widths of the first gap and the second gap may be unequal.

[0084] For example, at least one of the first dielectric layer and the second dielectric layer is formed using FR-4 material.

[0085] For example, providing a first radiation sheet includes:

[0086] Providing a rectangular radiation sheet;

[0087] A hollow area is formed on the radiation sheet, and an auxiliary conductive sheet is arranged in the hollow area. The auxiliary conductive sheet is arranged opposite to each edge of the hollow area. The first conductive column couples the auxiliary conductive sheet with the intermediate transmission line so that the auxiliary conductive sheet serves as the feeding point of the antenna assembly.

[0088] This document uses step codes such as S101, S102, etc., for the purpose of expressing the corresponding content more clearly and concisely, and does not constitute a substantial limitation on the sequence. When implementing the step codes, those skilled in the art may execute S103 first and then S102, etc., but these should all be within the scope of protection of this application.

[0089] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. For ordinary technicians in this field, all equivalent structural changes made using the contents of this specification and drawings are also included in the patent protection scope of the present application.

[0090] Although the terms "first, second", etc. are used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. In addition, the singular forms "one", "an", and "the" are intended to include plural forms as well. The terms "or" and "and / or" are interpreted as inclusive, or mean any one or any combination. Only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way, an exception to this definition will occur.

Claims

1. A method for manufacturing an antenna assembly, characterized in that: include: providing a first radiation sheet; forming a first dielectric layer on the first radiation plate; forming a first through hole penetrating the first dielectric layer and a first conductive column in the first through hole; forming an intermediate transmission line on the first dielectric layer, wherein the intermediate transmission line and the first radiation sheet are coupled via the first conductive column; forming a second dielectric layer covering the first dielectric layer on the intermediate transmission line; forming a second through hole penetrating the second dielectric layer and a second conductive column in the second through hole; A second radiation plate is formed on the second dielectric layer. The second radiation plate and the intermediate transmission line are coupled via the second conductive column. The second radiation plate and the first radiation plate at least partially overlap.

2. The method according to claim 1, characterized in that The forming of the second radiation sheet on the second dielectric layer comprises: Disposing a rectangular radiation sheet on the second dielectric layer; The radiation sheet is patterned to form the second radiation sheet, which includes a main body, a first branch and a second branch, wherein the first branch and the second branch are arranged on opposite sides of the main body, and the lengths of the first branch and the second branch are unequal.

3. The method according to claim 1 or 2, characterized in that: The forming of the second radiation sheet on the second dielectric layer comprises: Disposing a rectangular radiation sheet on the second dielectric layer; The radiation sheet is patterned to form the second radiation sheet, which includes a main body, a first branch and a second branch, wherein the first branch and the second branch are arranged on opposite sides of the main body, a first gap is formed between the first branch and the main body, and a second gap is formed between the second branch and the main body.

4. The method according to claim 3, characterized in that The widths of the first gap and the second gap are not equal.

5. The method according to claim 1, characterized in that At least one of the first dielectric layer and the second dielectric layer is formed by using FR-4 material.

6. The method according to claim 1, characterized in that The providing of the first radiation sheet comprises: Providing a rectangular radiation sheet; A hollow area is formed on the radiation sheet, and an auxiliary conductive sheet is arranged in the hollow area. The auxiliary conductive sheet is arranged opposite to each edge of the hollow area. The first conductive column couples the auxiliary conductive sheet with the intermediate transmission line so that the auxiliary conductive sheet serves as a feeding point of the antenna assembly.

7. An antenna module, characterized in that: include: Medium body; At least two antenna components are manufactured by the method described in any one of claims 1 to 6, the first dielectric layer and the second dielectric layer of each antenna component serve as part of the dielectric body, adjacent antenna components are arranged relative to each other, and a defective structure is arranged between adjacent antenna components.

8. The antenna module according to claim 7, characterized in that: Adjacent antenna components are symmetrically arranged along the defect, or the second radiation plates of adjacent antenna components are symmetrically arranged along the defect.

9. The antenna module according to claim 7 or 8, characterized in that: Adjacent antenna components are coupled to the circuit board via a coaxial line to achieve feeding.

10. A communication device, characterized in that: An antenna module comprising any one of claims 7 to 9.

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