An antenna module and an antenna array

Abstract

The antenna module provided by the embodiment of the application excites two-way orthogonal radiation energy through two feeding structures to realize dual polarization. Moreover, the antenna module structure provided by the application can cover all commercial millimeter wave frequency bands when used, and can seamlessly realize global roaming, and has strong commercial value.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to an antenna module and an antenna array. BACKGROUND

[0002] With the popularization of high-tech electronic products, especially to meet the needs of mobile, most mobile high-tech electronic products have increased the function of wireless communication. In the fifth generation mobile network (5th generation mobile networks, 5G technology), millimeter wave antennas are widely used.

[0003] The international telecommunication union (international telecommunication union, ITU) stipulates that 24.25-27.5GHz, 37-43.5GHz, 45.5-47GHz, 47.2-48.2GHz and 66-71GHz are 5G millimeter wave frequency bands. The 5G millimeter wave frequency bands used by various operators may not be the same, so the millimeter wave antenna installed on the mobile high-tech electronic product should cover as many frequency bands as possible.

[0004] At present, the antenna module installed on the electronic product is mainly a patch antenna, which has relatively narrow bandwidth and is difficult to achieve wideband and multi-frequency coverage. SUMMARY

[0005] In a first aspect, the embodiments of the present application provide an antenna module, comprising: four radiation units arranged in a ring, and two feed structures; first, second, third and fourth intervals are sequentially arranged between adjacent radiation units in the four radiation units, the first interval and the third interval are aligned and communicated, and the second interval and the fourth interval are aligned and communicated; the two feed structures intersect with each other, and the two ends of the first feed structure are respectively accommodated in the first interval and the third interval, and the two ends of the second feed structure are respectively accommodated in the second interval and the fourth interval. In the technical scheme provided by the embodiments of the present application, the antenna module excites two orthogonal radiation energies through two feed structures respectively, and realizes dual polarization. Moreover, the antenna module structure provided by the present application can cover all commercial millimeter wave frequency bands when used, and can realize seamless global roaming, which has strong commercial value.

[0006] In combination with the first aspect, in an implementation manner of the embodiments of the present application, each radiation unit comprises a horizontal radiator and a vertical radiator; the horizontal radiator is a square metal sheet located at the top of the radiation unit; the top end of the vertical radiator is connected with the horizontal radiator, and the bottom end of the vertical radiator is connected with an antenna reference ground.

[0007] In an implementation form of the first aspect, the vertical radiator comprises a first horizontal extension body and a first metallized via; the first horizontal extension bodies are connected through the first metallized via; on the first horizontal extension body, the first metallized via connected to the upper layer structure and the first metallized via connected to the lower layer structure are arranged on both sides of the first horizontal extension body.

[0008] In an implementation form of the first aspect, the first horizontal extension body is a square metal sheet.

[0009] In an implementation form of the first aspect, the sum of the side length of the first horizontal extension body and the length of the first metallized via is a quarter of the wavelength of the signal of the center frequency of the antenna module.

[0010] In an implementation form of the first aspect, each of the feed structures comprises a horizontal feed structure and a vertical feed structure; the horizontal feed structure is a metal sheet located at the top of the feed structure; the top end of the vertical feed structure is connected to the horizontal feed structure, and the bottom end of the vertical feed structure is connected to the radio frequency circuit.

[0011] In an implementation form of the first aspect, the horizontal feed structure is composed of two rectangular structures connected by a columnar structure in the middle, and the width of the rectangular structure is greater than the width of the columnar structure.

[0012] In an implementation form of the first aspect, the vertical feed structure comprises a second horizontal extension body and a second metallized via; the first horizontal extension bodies are connected through the first metallized via; on the first horizontal extension body, the first metallized via connected to the upper layer structure and the first metallized via connected to the lower layer structure are arranged on both sides of the first horizontal extension body.

[0013] In an implementation form of the first aspect, the second horizontal extension body is a square metal sheet.

[0014] In an implementation form of the first aspect, the side length of the horizontal radiator is a quarter of the wavelength of the center frequency of the antenna module.

[0015] In an implementation form of the first aspect, the radiation unit and the feed structure are encapsulated in two prepreg layers and a core layer; the core layer is arranged between the two prepreg layers; a metal layer is arranged in the prepreg layer; the first horizontal extension body in the vertical radiator and the second horizontal extension body of the vertical feed structure are embedded in the metal layer.

[0016] In a second aspect, the embodiments of the present application provide an antenna array, comprising a plurality of the antenna module of the first aspect; the antenna modules are arranged in an array of M rows and N columns, M is an integer greater than 0, and N is an integer greater than 0. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of an existing antenna module;

[0018] Figure 2 is a schematic diagram of another existing antenna module;

[0019] Figure 3 is a top view of an antenna module provided by the embodiments of the present application;

[0020] Figure 4 is a sectional view of an antenna module provided by the embodiments of the present application;

[0021] Figure 5 is a perspective view of a single radiating unit in the embodiments of the present application;

[0022] Figure 6 is a side view of a single radiating unit in the embodiments of the present application;

[0023] Figure 7 is an analysis diagram of a horizontal extension in the embodiments of the present application;

[0024] Figure 8 is an example diagram of adjustment of the horizontal extension in the embodiments of the present application;

[0025] Figure 9 is a perspective view of two feeding structures in the embodiments of the present application;

[0026] Figure 10 is a side view of a single feeding structure in the embodiments of the present application;

[0027] Figure 11 is a top view of two horizontal feeding structures in the embodiments of the present application;

[0028] Figure 12 is a reflection coefficient curve diagram of the antenna module provided by the embodiments of the present application;

[0029] Figure 13 is a gain curve diagram of the antenna module provided by the embodiments of the present application;

[0030] Figure 14 is a directional diagram of the antenna module provided by the embodiments of the present application at 24 GHz;

[0031] Figure 15The antenna module provided by the embodiment of the present application has a directivity diagram at 43.5 GHz.

[0032] Figure 16 The top view schematic diagram of the antenna array provided by the embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application.

[0034] Figure 1 The schematic diagram of the existing antenna module. The existing antenna module realizes dual frequency through multi-layer coupling, and generally, the lower patch generates low frequency and the upper patch generates high frequency. The dual frequency scheme of this antenna module is realized through the coupling between the coupled patches. Since the layer spacing in the package is not arbitrary, the ratio of the two resonant frequencies has low degree of freedom, and the relative bandwidth of each frequency band is relatively narrow, which is difficult to cover the current required bandwidth. In addition, the antenna module needs additional layers, which generally increases the height and is not conducive to low profile design.

[0035] Figure 2 The schematic diagram of another existing antenna module. This scheme realizes dual frequency operation and expands the bandwidth by adding a parasitic element to the radiating patch. The main patch can excite the parasitic element through coupling, which can change the antenna impedance and thus improve the high frequency gain of the antenna module. However, the high frequency signal of this scheme is obtained through the parasitic element, and not in the form of a low frequency patch antenna. Although a usable bandwidth can be obtained, it often causes distortion of the directivity diagram. Secondly, in this scheme, the same layer does not need additional layers but will increase the size of the unit, and the unit spacing will be reduced after arraying, which often worsens the mutual coupling between the array elements.

[0036] Therefore, the embodiment of the present application provides a new type of antenna module to solve the bandwidth shortage in the above-mentioned antenna module. The antenna module can solve the bandwidth shortage in the above-mentioned antenna module, and can obtain a stable directivity diagram, realize ultra-wideband frequency coverage at a lower profile, meet the full coverage of the millimeter wave frequency band (FR2 frequency band) in 5G New Radio (5G New Radio), and be easy to implement in packaging, have good electrical performance and mass production.

[0037] In order to describe each of the following embodiments clearly and concisely, first, a brief introduction of related technologies is given:

[0038] The antenna module provided in this application embodiment can be manufactured using an antenna-in-package (AiP) process. An antenna-in-package (AiP) is a technology that integrates the antenna and chip within a package based on packaging materials and processes to achieve system-level wireless functionality. Its advantages include simplified system design, product miniaturization, and low cost. AiP technology, by aligning with the trend of increasing integration in silicon-based semiconductor processes, provides an excellent antenna and packaging solution for system-level wireless chips. Furthermore, with the rapid development of communication information, AiP technology has become an essential technology for 5G mobile networks and automotive radar chips.

[0039] Figure 3 This is a top view of an antenna module provided in an embodiment of this application. Figure 3 As shown, the antenna module includes four radiating elements 1 and two feed structures 2. These four radiating elements 1 are arranged horizontally in a ring. A first interval 301, a second interval 302, a third interval 303, and a fourth interval 304 are sequentially arranged between adjacent radiating elements 1 to accommodate the two feed structures 2. For example, the first interval 301 and the third interval 303 are used to accommodate the feed structure 2 shown by the solid line, and the second interval 302 and the fourth interval 304 are used to accommodate the feed structure 2 shown by the dashed line. It is understood that the first interval 301 and the third interval 303 are aligned and connected, that is, aligned and connected on the same channel, so that the feed structure 2 shown by the solid line can be placed on this channel, and the two ends of the feed structure 2 shown by the solid line are respectively accommodated in the first interval 301 and the third interval 303. In this embodiment of the application... Figure 3 The channel shown is straight; however, in practical applications, it can also be curved, and this embodiment does not limit this. Similarly, the second interval 302 and the fourth interval 304 are aligned and connected, and the two ends of the feed structure 2 shown by the dashed line are respectively housed in the second interval 302 and the fourth interval 304. The spacing between the four radiating elements 1 is d. Adjusting the size of d can control the spacing between the radiating element 1 and the feed structure 2, thereby adjusting the antenna impedance and obtaining suitable impedance matching.

[0040] Figure 4 for Figure 3A side view of the antenna module is shown. The antenna module is formed by a substrate and a radio frequency integrated circuit chip (RFIC) through a solder ball connection and packaging. The substrate is a three-layer structure, and each layer structure can embed an antenna in the dielectric layer in a packaging embedded antenna manner. The material used to fill the dielectric layer can be a material suitable for packaging embedded antennas. For example, the first dielectric layer 3 can be a semi-cured layer (also known as a semi-cured sheet or PP layer), the second dielectric layer 4 can be a core layer (also known as a core layer), and the third dielectric layer 5 can be a semi-cured layer. This three-layer structure can use the characteristics of the semi-cured layer to enhance the flatness of the packaging. Metal layers can be provided in the first dielectric layer 3, the second dielectric layer 4, and the third dielectric layer 5. These metal layers can be embedded in the three-layer structure in a packaging embedded antenna manner. Vias can be provided between the metal layers to achieve electrical connection. The following first describes the radiation unit 1 part of the antenna module.

[0041] I. Radiation unit:

[0042] As shown in Figure 4 , the first dielectric layer 3 has 7 layers of metal layers embedded therein, the second dielectric layer 4 has no metal layers embedded therein, and the third dielectric layer 5 has 7 layers of metal layers embedded therein. In actual applications, antenna designers can set different numbers of metal layers according to actual needs, and the present application does not limit this. It can be understood that Figure 4 the metal layers in the above are only an example, and in actual applications, the spacing between the metal layers can be adjusted according to actual needs.

[0043] In the present application, different lengths of metal sheets can be embedded in the metal layers for signal transmission. The other parts of the metal layers not embedded with metal sheets are filled with the material used to fill the dielectric layer. The metal layers can be connected through vias for signal transmission. Therefore, after the antenna module receives a signal, the signal can be transmitted to the antenna reference ground 7 through the metal sheets embedded in the metal layers and the vias. The size, shape, length, and position of the metal sheets embedded in the metal layers can be designed according to actual needs, and the present application does not limit this.

[0044] It can be understood that the metal layer on the top of the first dielectric layer can be exposed on the top of the antenna module according to actual needs, or embedded inside the antenna module according to actual needs, and the present application does not limit this. It can be understood that the metal layer below the antenna reference ground 7 in the third dielectric layer 5 can be embedded with metal sheets or not embedded with metal sheets according to actual needs, and the present application does not limit this.

[0045] The following provides a more preferred antenna design embodiment:

[0046] The antenna module provided in this application embodiment has four symmetrically distributed radiating elements. The four radiating elements have similar structures. The following description will focus on one of the radiating elements. The structures of the other radiating elements can be referred to in the following embodiment.

[0047] Figure 5 This is a three-dimensional schematic diagram of a single radiating element in an embodiment of this application. Figure 6 for Figure 5 The diagram shows a cross-sectional view (AA) of the radiating element. This radiating element includes seven metal layers in the first dielectric layer 3, vias in the second dielectric layer 4, two metal layers in the third dielectric layer 5, and vias between all the metal layers.

[0048] Please see Figure 6 In the first dielectric layer 1, a square metal sheet with a side length of w is embedded in the first metal layer 11. The value of w is set according to the frequency range of the signal to be transmitted and received by the antenna, and is usually one-quarter wavelength of the signal at the center frequency of the frequency range. This square metal sheet can also be called the horizontal radiator 11 or the horizontal radiating part of the radiating element. The vertical radiating part of the radiating element (i.e., the vertical radiator 12) is composed of multiple horizontal extensions 121 and metallized vias 123. The horizontal extensions 121 are square metal sheets, and the horizontal extensions 121 are longitudinally connected through the metallized vias 123. It can be understood that the horizontal radiator 11 and the horizontal extension 121 can also be longitudinally connected through the metallized vias 123. The antenna reference ground 7 can also be longitudinally connected to the horizontal extension 121 through the metallized vias 123. During the formation of the vias, when metal is plated after drilling, a ring (or piece) of metal will be left in the metal layer where the metal sheet can be embedded but is not embedded, i.e. Figure 6 The leached metal 122 shown includes leached metal 122a, leached metal 122b, leached metal 122c, and leached metal 122d. This leached metal 122 does not have a significant impact on the technical effect of the embodiments of this application, and the embodiments of this application do not exclude technical solutions without leached metal 122.

[0049] refer to Figure 6 The signal transmission path received by the antenna module can be represented as a bent line. Figure 6 The dashed line 124 represents the signal. After receiving a signal, the antenna can transmit it along this dashed line 124. The total length of the dashed line 124 is the total length of the bend. The total length of this bend can be set according to the frequency range of the signals to be transmitted and received by the antenna; generally, it should be one-quarter of the wavelength of the signal at the center frequency of the frequency range. The following is illustrated by... Figure 7 Explain how the path of signal transmission is bent.

[0050] Figure 7This is an analytical diagram of the horizontal extensions in an embodiment of this application. These horizontal extensions 121 specifically include horizontal extension 121a, horizontal extension 121b, and horizontal extension 121c. In this embodiment, the shape of these horizontal extensions 121 is square. In practical applications, they can be designed into other shapes according to actual needs, and this embodiment does not limit this. The vias used to connect the upper and lower metal sheets of these horizontal extensions 121 are different, and the vias on the horizontal extensions 121 are generally located on both sides of the horizontal extension 121. Therefore, signals transmitted through the vias need to pass through these horizontal extensions 121, thus causing the signals received by the antenna module to pass through these horizontal extensions 121, i.e., the signal transmission path is bent. The side length L2 of horizontal extensions 121a and 121b can be designed according to actual needs. Designers can adjust the path length of the signal through the horizontal extension 121 by adjusting the side length L2 of the horizontal extensions 121a and 121b, thereby adjusting the degree of bending in the signal transmission path and adjusting the overall performance of the antenna. Please refer to [link / reference]. Figure 6 The height h2 of the horizontal extension 121a is actually the distance between the horizontal extension 121a and the antenna reference ground 7. This distance can be adjusted by placing the horizontal extension 121a in different metal layers. For example, Figure 6 The horizontal extension 121a shown is disposed in the third metal layer counting down from the top of the antenna. In practical applications, designers can place the horizontal extension 121a in the fourth layer counting down from the top of the antenna, thus reducing the height h2 of the horizontal extension 121a. The side length and height designs of the horizontal extensions 121b and 121c are similar to those of the horizontal extension 121a, and will not be repeated here. Generally, when there are many metal layers separating two horizontal extensions 121, the depth of the metallized via 123 connecting the two horizontal extensions 121 is larger. For example... Figure 6 The horizontal extension 121a is separated from the horizontal extension 121b by one metal layer, while the horizontal extension 121b is separated from the horizontal extension 121c by two metal layers. Therefore, the depth of the metallized via 123 between them is relatively large. Figure 6 and Figure 7 Only an embodiment with three horizontal extensions 121 is shown. In practical applications, designers can design more or fewer horizontal extensions 121 depending on the actual situation. This application embodiment does not limit the number of horizontal extensions 121. It is understood that the side length, height, and depth of the metallized vias 123 of all horizontal extensions 121 can be adjusted according to the actual situation to obtain a suitable structure and balance the antenna height and overall performance. This application embodiment does not limit this.

[0051] Figure 8 Fig. 3 is a diagram of three design variations of the horizontal extension body in the embodiment of the present application. Figure 8 The radiation unit on the left side is taken as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4. Figure 6 Similarly, details are not repeated here. Taking the radiation unit on the left side as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4. Figure 8 The radiation unit on the left side is taken as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4. Figure 8 The radiation unit on the left side is taken as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4. Figure 8 The radiation unit on the left side is taken as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4. Figure 8 The radiation unit on the left side is taken as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4. Figure 8 The radiation unit on the left side is taken as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4. Figure 8 The radiation unit on the left side is taken as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4. Figure 8 The radiation unit on the left side is taken as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4. Figure 8 The radiation unit on the left side is taken as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4. Figure 8 The radiation unit on the left side is taken as a prototype, and two horizontal extension bodies corresponding to the side length L2 are removed in the design, so that the corresponding metal layer is no longer provided with a metal sheet. The metalized via can connect the lowermost horizontal extension body, and a new design scheme is obtained as shown in Fig. 4.

[0052] II. Feeding structure

[0053] In the embodiment of the present application, the feeding of the antenna is completed by two orthogonal feeding structures 2, which respectively excite two orthogonal radiation energies to realize the function of dual polarization.

[0054] In the top view Figure 3 , the two feeding structures 2 are placed in cross, but in fact they are separated in the vertical direction, as shown in Figure 9 . Figure 9 Fig. 6 is a perspective view of the two feeding structures in the embodiment of the present application. It can be seen that the two feeding structures are staggered and placed in cross. Specifically, one feeding structure is placed above the other feeding structure, and from the top view Figure 3The overlapping part is observed. Figure 10 is a cross-sectional view of a single feed structure in an embodiment of the present application. Each feed structure is divided into a horizontal feed structure 21 and a vertical feed structure 22. The horizontal feed structure 21 is located at the top of the feed structure and is in the form of a rectangular strip of metal for realizing the feed function. In a more preferred implementation, the horizontal feed structure 21 is formed by two rectangular structures 211 connected by a columnar structure 212. The rectangular structure 211 can be a rectangular strip of metal and the columnar structure 212 can be a strip of metal with a relatively narrow width. This "dumbbell" shaped horizontal feed structure 21 can reduce the part where the two horizontal feed structures intersect (as viewed from the top view) and thus reduce the influence between the electromagnetic fields of the two horizontal feed structures, reduce the degree of polarization overlap between the two horizontal feed structures, and increase the polarization isolation. Figure 3 The total length of the horizontal feed structure 21 is L3, and the frequency range of the antenna for transmitting and receiving signals can be adjusted by adjusting L3. The vertical feed structure 22 is connected by a horizontal extension body 221 and a metalized via 222. The horizontal extension body 221 includes a horizontal extension body 221a and a horizontal extension body 221b. The via connecting the upper metal layer and the lower metal layer is generally arranged on both sides of the horizontal extension body 221a, so when the signal is transmitted to the horizontal extension body 221a, it passes horizontally through the horizontal extension body 221a, and the signal is transmitted to the horizontal extension body 221b through the metalized via 222. The horizontal extension body 221b is connected to the horizontal feed structure 21 through the metalized via 222. The horizontal extension body 221b is connected to the horizontal feed structure 21 through the metalized via 222. The bottom of the vertical feed structure is connected to the radio frequency circuit through a transmission line 8. For example, the transmission line 8 is a 50-ohm transmission line. Figure 6 The horizontal extension body 121 in each embodiment is similar, and will not be described again here. The horizontal extension body 221b is the same.

[0055] Figure 11 is a top view of two horizontal feed structures in an embodiment of the present application. The width w1 of the rectangular structure 211 is greater than the width w2 of the columnar structure 212. Reducing the width w2 of the columnar structure 212 can reduce the part where the two horizontal feed structures intersect, thereby reducing the influence between the electromagnetic fields of the two horizontal feed structures, reducing the degree of polarization overlap between the two horizontal feed structures, and increasing the polarization isolation. Adjusting the width w1 of the rectangular structure 211 can change the impedance of the feed structure. The greater the w1, the lower the impedance, and vice versa. The distance between the two rectangular structures 211, i.e. the length L4 of the columnar structure 22, can also be adjusted according to design needs. Designers can adjust the width w1 of the rectangular structure and the width w2 of the columnar structure according to actual needs and the overall performance of the antenna, which is not limited in the embodiments of the present application.

[0056] III. Radio frequency integrated circuit chip:

[0057] In the embodiments of the present application, the radio frequency integrated circuit chip can be replaced by a circuit board printed with a radio frequency circuit, and the embodiments of the present application are not limited in this regard. The feeding structure is connected to the radio frequency integrated circuit chip, and mainly functions to connect the radio frequency circuit on the radio frequency integrated circuit chip, and therefore other design schemes of the radio frequency circuit also belong to the technical scheme range provided by the embodiments of the present application.

[0058] In the embodiments of the present application, the radio frequency integrated circuit chip is connected to the feeding structure through a transmission line. Specifically, the radio frequency integrated circuit chip can be connected to the transmission line on the feeding structure through a solder ball.

[0059] Figure 12 A reflection coefficient curve of the antenna module provided by the embodiments of the present application. Figure 13 A gain curve of the antenna module provided by the embodiments of the present application. The two curves are obtained by simulation, and it can be seen from the two curves that the antenna module well covers the frequency bands of n257-n260, that is, covers two high and low frequency bands of millimeter waves, and can realize global roaming coverage.

[0060] Figure 14 A directional diagram of the antenna module provided by the embodiments of the present application at 24 GHz. Figure 15 A directional diagram of the antenna module provided by the embodiments of the present application at 43.5 GHz. It can be seen from the Figure 14 and Figure 15 that the high and low frequency far field three-dimensional directional diagram characteristics of the antenna module, that is, the antenna module has good directional radiation characteristics at high and low frequencies, and meets the index.

[0061] Figure 16 A top view schematic diagram of an antenna array provided by the embodiments of the present application. The antenna array includes four antenna modules as in the above embodiments, and the four antenna modules are distributed in two rows and two columns. In actual application, a designer can also configure a plurality of antenna modules according to actual conditions to form an antenna array of M rows and N columns (M is an integer greater than 0, and N is an integer greater than 0), and the embodiments of the present application are not limited in this regard.

[0062] The terms "first", "second", etc. in the specification and claims of the present application and in the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the terms thus used can be interchanged under appropriate circumstances, and this is merely a distinguishing manner adopted in the description of the embodiments of the present application for the objects of the same attribute in the description. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, so that a process, method, system, product or equipment including a series of units does not have to be limited to those units, but can include other units not clearly listed or inherent to the process, method, product or equipment.

[0063] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, and will not be described here again.

Claims

1. An antenna module, characterized in that, include: Four radiating elements arranged in a surrounding arrangement, and two feeding structures, the two feeding structures including a first feeding structure and a second feeding structure; The four radiating units are arranged with a first interval, a second interval, a third interval and a fourth interval in sequence between adjacent radiating units. The first interval and the third interval are aligned and communicate with each other, and the second interval and the fourth interval are aligned and communicate with each other. The two power supply structures intersect each other, with the two ends of the first power supply structure respectively housed in the first and third intervals, and the two ends of the second power supply structure respectively housed in the second and fourth intervals; wherein each power supply structure includes a horizontal power supply structure and a vertical power supply structure, the horizontal power supply structure being composed of two rectangular structures connected in the middle by a columnar structure, the width of the rectangular structure being greater than the width of the columnar structure.

2. The antenna module according to claim 1, characterized in that, Each of the radiation units includes a horizontal radiator and a vertical radiator; The horizontal radiator is a square metal plate located at the top of the radiating unit; The top end of the vertical radiator is connected to the horizontal radiator, and the bottom end of the vertical radiator is connected to the antenna reference ground.

3. The antenna module according to claim 2, characterized in that, The vertical radiator includes a first horizontal extension and a first metallized via. The first horizontal extensions are connected to each other via the first metallized via; On the first horizontal extension, the first metallized via connecting the upper structure and the first metallized via connecting the lower structure are disposed on both sides of the first horizontal extension.

4. The antenna module according to claim 3, characterized in that, The first horizontal extension is a square metal sheet.

5. The antenna module according to claim 3 or 4, characterized in that, The sum of the side length of the first horizontal extension and the length of the first metallized via is one-quarter wavelength of the signal at the center frequency of the antenna module.

6. The antenna module according to any one of claims 1 to 4, characterized in that, The horizontal feeding structure is a metal sheet located on top of the feeding structure; The top end of the vertical feed structure is connected to the horizontal feed structure, and the bottom end of the vertical feed structure is connected to the radio frequency circuit.

7. The antenna module according to claim 6, characterized in that, The vertical power supply structure includes a second horizontal extension and a second metallized via. The second horizontal extensions are connected to each other via the second metallized via; On the second horizontal extension, the second metallized via connecting the upper structure and the second metallized via connecting the lower structure are disposed on both sides of the second horizontal extension.

8. The antenna module according to claim 7, characterized in that, The second horizontal extension is a square metal sheet.

9. The antenna module according to any one of claims 2 to 4, characterized in that, The side length of the horizontal radiator is one-quarter of the wavelength of the center frequency of the antenna module.

10. The antenna module according to any one of claims 2 to 4, characterized in that, The radiating unit and the feeding structure are encapsulated in two semi-cured layers and a core layer; The core layer is disposed between the two semi-cured layers; A metal layer is disposed within the semi-cured layer, and the first horizontal extension of the vertical radiator and the second horizontal extension of the vertical feed structure are embedded in the metal layer.

11. An antenna array, characterized in that, Includes multiple antenna modules as described in any one of claims 1 to 10; The antenna module is arranged in an array of M rows and N columns, where M is an integer greater than 0 and N is an integer greater than 0.

Images