Antenna apparatus and communication device

Abstract

The present application relates to the technical field of electronics, and discloses an antenna apparatus and a communication device. The antenna apparatus comprises a substrate and a cavity member. The substrate is provided with a feed part and a grounding part, and the feed part is spaced apart from the grounding part. The cavity member is connected to the substrate, and is electrically connected to the grounding part. The substrate or the cavity member has a gap area, and the orthographic projection of the gap area on the plane where the substrate is located intersects with the feed part. Embodiments of the present application can solve the problem of a polarization difference between a communication device and a gateway side.

Description

Antenna device and communication equipment

[0001] This application claims priority to Chinese patent application No. 202420290048.X filed on February 8, 2024, with utility model name “Antenna device and communication equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of electronic technology, and in particular to antenna devices and communication equipment. Background Art

[0003] The antenna device is an important component of communication equipment, which is used to transmit and receive signals.

[0004] In the related art, there is a dipole antenna, which is composed of a pair of symmetrically placed conductors. Due to its simple structure, the dipole antenna has been widely used.

[0005] However, since the dipole antenna has only one polarization, and its polarization direction is consistent with the antenna arm of the dipole antenna, a polarization difference occurs between the communication device equipped with the dipole antenna and the gateway side.

[0006] Utility Model Content

[0007] The present application provides an antenna device and a communication device to solve the polarization difference problem between the communication device and the gateway side. The technical solution is as follows:

[0008] In a first aspect, an antenna device is provided, comprising a substrate and a cavity member, wherein the substrate provides a mounting base for the cavity member, and the cavity member is capable of forming a cavity. The substrate has a feeding portion and a grounding portion, and the feeding portion and the grounding portion are spaced apart. The feeding portion is used to transmit electrical signals, and the grounding portion is used to provide a grounding surface for the antenna device. The cavity member is connected to the substrate, and the cavity member is electrically connected to the grounding portion, so that the grounding portion is used to achieve grounding of the cavity member. The substrate or the cavity member has a slot area, and the orthographic projection of the slot area on the plane of the substrate intersects with the feeding portion. In this way, after feeding, the feeding portion can excite the slot area to form radiation, so that the antenna device forms a slot antenna, which has the characteristics of omnidirectional high-gain radiation, thereby solving the polarization difference problem between the communication device and the gateway side.

[0009] The antenna device provided in the embodiment of the present application has at least the following effects:

[0010] The substrate can serve as both an installation base for the cavity part and a feeding network and ground plane for the slot antenna, and can also serve as a component of the slot area in some cases. The cavity part can serve as both a cavity for the slot antenna and a component of the slot area in some cases. Therefore, the antenna device can include only two parts, the substrate and the cavity part, with high integration and low manufacturing cost. After power is fed to the feeding part on the substrate, the slot area can be stimulated to form radiation, so that the antenna device forms a slot antenna, which has the characteristics of omnidirectional high-gain radiation, thereby solving the polarization difference problem between the communication device and the gateway side.

[0011] In one implementation of the present application, the feeding portion includes a first microstrip line and a second microstrip line, and the first microstrip line is electrically connected to the second microstrip line. The end of the first microstrip line away from the second microstrip line is close to the ground portion. In this way, the distance between the first microstrip line and the ground portion is relatively close, which is conducive to the two being connected to the RF coaxial line respectively, that is, the first microstrip line is connected to the inner conductor of the RF coaxial line, and the ground portion is connected to the outer conductor of the RF coaxial line. Since the first microstrip line is electrically connected to the second microstrip line, after the first microstrip line is fed by the RF coaxial line, the electrical signal will be transmitted to the second microstrip line. Since the orthographic projection of the gap area on the plane where the substrate is located intersects with the second microstrip line, the second microstrip line can excite the gap area to form radiation.

[0012] In one implementation of the present application, the slot region is in the form of an elongated strip and is perpendicular to the second microstrip line. That is, in the arrangement direction, the slot region and the second microstrip line are perpendicular to each other. This facilitates achieving a uniform electric field distribution on the aperture surface of the slot antenna, significantly improving the radiation efficiency and gain of the antenna device.

[0013] In one implementation of the present application, the feed section includes at least two second microstrip lines, which are sequentially spaced apart along the length of the slot region. Because the second microstrip lines are sequentially spaced apart along the length of the slot region, the second microstrip lines provide more uniform excitation to the slot region, further facilitating uniform electric field distribution on the slot antenna aperture, significantly improving the radiation efficiency and gain of the antenna device.

[0014] In one implementation of the present application, the feed section further includes a third microstrip line, the length direction of the third microstrip line being consistent with the length direction of the slot region, and the third microstrip line being connected to the first microstrip line and each of the second microstrip lines, respectively. With this design, the first microstrip line and the second microstrip line can be connected together via the third microstrip line, thereby achieving electrical connection between the first microstrip line and the second microstrip line. Furthermore, because the length direction of the third microstrip line is consistent with the length direction of the slot region, the length direction of the third microstrip line is consistent with the arrangement direction of each of the second microstrip lines, thereby facilitating the connection of each of the second microstrip lines via the third microstrip line.

[0015] In one implementation of the present application, the cavity member includes a first side panel, a back panel, and a second side panel connected in sequence. The first side panel and the second side panel are arranged opposite each other and are respectively connected to the base panel. Thus, a cavity can be enclosed by the first side panel, the back panel, and the second side panel. Furthermore, at least one of the first side panel and the second side panel is electrically connected to the grounding portion, thereby achieving grounding of the cavity member.

[0016] In one implementation of the present application, the cavity member further includes a first side panel and a second side panel, the first side panel and the second side panel being located in the same plane, and the first side panel and the second side panel being arranged opposite to the back panel, the first side panel being connected to the first side panel, the second side panel being connected to the second side panel, and a side edge of the first side panel away from the first side panel and a side edge of the second side panel away from the second side panel being spaced apart to form the gap area. With this design, the gap area can be formed by the first side panel and the second side panel, that is, the gap area can be set on the cavity member.

[0017] In one implementation of the present application, the ground portion and the feed portion are located on the same surface of the substrate. This design, in which the ground portion and the feed portion are both located on the same surface of the substrate, can effectively reduce the difficulty of manufacturing the substrate, thereby reducing the manufacturing cost of the antenna device.

[0018] In one implementation of the present application, the first side panel and the second side panel have pins, which are inserted into the base plate and connected to the ground portion. The pins are inserted into the base plate, and on the one hand, the pins can achieve a fixed connection between the cavity member and the base plate, and on the other hand, the pins can achieve an electrical connection between the cavity member and the ground portion.

[0019] In one implementation of the present application, the ground portion and the feed portion are located on opposite sides of the substrate, respectively. The ground portion is arranged opposite the cavity member, and the middle portion of the ground portion is hollowed out to form the gap area. With this design, the ground portion and the feed portion are located on opposite sides of the substrate, respectively, ensuring a mutual spacing between the two. The gap area is formed by the hollowing between the ground portions, thereby achieving the arrangement of the gap area on the substrate.

[0020] In one implementation of the present application, the substrate further includes a connecting portion, wherein a first end and a second end of the connecting portion are located on opposite sides of the substrate, respectively. The first end of the connecting portion is connected to the feeding portion, and the second end of the connecting portion is adjacent to the grounding portion. Since the feeding portion and the grounding portion are located on opposite sides of the substrate, respectively, the second end of the connecting portion is adjacent to the grounding portion, thereby facilitating the use of the connecting portion to connect the feeding portion and the grounding portion to the RF coaxial line, respectively. That is, the feeding portion is connected to the inner conductor of the RF coaxial line via the connecting portion, and the grounding portion is connected to the outer conductor of the RF coaxial line.

[0021] In a second aspect, a communication device is provided, comprising the antenna device according to the first aspect.

[0022] The communication device provided in the embodiment of the present application has at least the following effects:

[0023] The communication device is equipped with the antenna device, which includes the substrate and the cavity part. The substrate can serve as the installation base for the cavity part, as the feeding network and ground plane of the slot antenna, and in some cases, as a component of the slot area. The cavity part can serve as the cavity of the slot antenna, and in some cases, as a component of the slot area. Therefore, the antenna device can include only two parts, the substrate and the cavity part, with high integration and low manufacturing cost. After feeding power to the feeding part on the substrate, the slot area can be stimulated to form radiation, so that the antenna device forms a slot antenna, which has the characteristics of omnidirectional high-gain radiation, thereby solving the polarization difference problem between the communication device and the gateway side. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is a schematic structural diagram of an antenna device provided in an embodiment of the present application;

[0025] FIG2 is a schematic structural diagram of an antenna device provided in an embodiment of the present application;

[0026] FIG3 is a schematic structural diagram of a substrate provided in an embodiment of the present application;

[0027] FIG4 is a schematic structural diagram of a cavity member provided in an embodiment of the present application;

[0028] FIG5 is a schematic structural diagram of another antenna device provided in an embodiment of the present application;

[0029] FIG6 is a schematic structural diagram of another substrate provided in an embodiment of the present application;

[0030] FIG7 is a schematic structural diagram of another substrate provided in an embodiment of the present application;

[0031] FIG8 is a schematic structural diagram of another cavity member provided in an embodiment of the present application.

[0032] Legend:

[0033] 10. Substrate;

[0034] 110. Power feeder;

[0035] 111, first microstrip line; 112, second microstrip line; 113, third microstrip line;

[0036] 120, grounding part;

[0037] 130, connecting portion;

[0038] 20. Cavity parts;

[0039] 210, first side panel; 220, back panel; 230, second side panel; 240, first side panel; 250, second side panel; 260, pins; 270, first connecting panel; 280, second connecting panel;

[0040] 30. Gap area;

[0041] 100. Coaxial cable.

[0042] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0043] The terms used in the implementation section of this application are only used to explain the embodiments of this application and are not intended to limit this application.

[0044] The antenna device is an important component of communication equipment, which is used to transmit and receive signals.

[0045] In the related art, there is a dipole antenna, which is composed of a pair of symmetrically placed conductors. Due to its simple structure, the dipole antenna has been widely used.

[0046] However, since the dipole antenna has only one polarization, and its polarization direction is consistent with the antenna arm of the dipole antenna, a polarization difference occurs between the communication device equipped with the dipole antenna and the gateway side.

[0047] In order to increase the horizontal polarization component, the relevant technology considers tilting the dipole antenna and controlling the tilt angle to achieve a ratio of horizontal polarization to vertical polarization. Since the gain of a single dipole antenna is relatively small and the beam and polarization are single, the dipole antenna in a tilted posture may cause the energy of any polarization component to become smaller, resulting in the deflection of the maximum radiation beam, and ultimately resulting in the coverage performance of the communication equipment in any polarization plane being worse than that of a pure single polarization. At the same time, because the tilted posture has higher space requirements, the communication equipment using this design is often very large in size, which is not suitable for miniaturized communication terminals, such as mobile terminals. Similar to this is the tri-polarized antenna, which is a design that uses horizontal orthogonal dual dipoles to achieve horizontal dual polarization, and the vertical monopole in the middle to form a three-in-one antenna. This tri-polarized antenna also has the problem of large size.

[0048] In order to solve the above technical problems, an embodiment of the present application provides an antenna device. FIG1 is a schematic structural diagram of the antenna device. Referring to FIG1 , in this embodiment, the antenna device includes a substrate 10 and a cavity member 20 .

[0049] FIG2 is a schematic structural diagram of an antenna device, which is viewed from the opposite perspective to FIG1 . Referring to FIG2 , a substrate 10 includes a feed portion 110 and a ground portion 120, with the feed portion 110 and the ground portion 120 spaced apart. A cavity member 20 is connected to the substrate 10, and the cavity member 20 is electrically connected to the ground portion 120. The substrate 10 or cavity has a slot region 30, whose orthographic projection onto the plane of the substrate 10 intersects the feed portion 110.

[0050] The substrate 10 provides an installation base for the cavity part 20, and the cavity part 20 can form a cavity. The substrate 10 has a feeding part 110 and a grounding part 120, and the feeding part 110 and the grounding part 120 are spaced apart. Among them, the feeding part 110 is used to transmit electrical signals, and the grounding part 120 is used to provide a grounding surface for the antenna device. The cavity part 20 is connected to the substrate 10, and the cavity part 20 is electrically connected to the grounding part 120, so that the grounding part 120 is used to achieve the grounding of the cavity part 20. The substrate 10 or the cavity part 20 has a gap area 30, and the orthographic projection of the gap area 30 on the plane where the substrate 10 is located intersects with the feeding part 110. In this way, after feeding, the feeding part 110 can stimulate the gap area 30 to form radiation, so that the antenna device forms a slot antenna, which has the characteristics of omnidirectional high-gain radiation, thereby solving the polarization difference problem between the communication equipment and the gateway side.

[0051] The antenna device provided in the embodiment of the present application has at least the following effects:

[0052] The substrate 10 can serve as both an installation base for the cavity part 20 and a feeding network and ground plane for the slot antenna, and can also serve as a component of the slot area 30 in some cases. The cavity part 20 can serve as both a cavity for the slot antenna and a component of the slot area 30 in some cases. Therefore, the antenna device can include only two parts, the substrate 10 and the cavity part 20, with high integration, low manufacturing cost, and effective reduction in size. After feeding power to the feeding part 110 on the substrate 10, the slot area 30 can be stimulated to form radiation, so that the antenna device forms a slot antenna, which has the characteristics of omnidirectional high-gain radiation, thereby solving the polarization difference problem between the communication equipment and the gateway side.

[0053] For example, the cavity member 20 is manufactured from a plate material through sheet metal processing and mechanical stamping, which is a mature and low-cost process. The substrate is a printed circuit board, which is not only lightweight but also facilitates the integrated design of the feed unit 110 and the ground unit 120, thereby reducing manufacturing costs while increasing miniaturization.

[0054] Figure 3 is a schematic structural diagram of the substrate 10. In conjunction with Figure 3, in this embodiment, the feeding portion 110 includes a first microstrip line 111 and a second microstrip line 112. The first microstrip line 111 is electrically connected to the second microstrip line 112. An end of the first microstrip line 111 away from the second microstrip line 112 is close to the ground portion 120. The orthographic projection of the gap region 30 on the plane of the substrate 10 intersects with the second microstrip line 112.

[0055] As a result, the distance between the first microstrip line 111 and the ground portion 120 is relatively close, which facilitates their respective connection to the RF coaxial line 100. Specifically, the first microstrip line 111 is connected to the inner conductor of the RF coaxial line 100, and the ground portion 120 is connected to the outer conductor of the RF coaxial line 100. Because the first microstrip line 111 is electrically connected to the second microstrip line 112, after being fed by the RF coaxial line 100, the electrical signal of the first microstrip line 111 will be transmitted to the second microstrip line 112. Furthermore, because the orthographic projection of the slot region 30 on the plane of the substrate 10 intersects with the second microstrip line 112, the second microstrip line 112 can stimulate the slot region 30 to generate radiation.

[0056] Exemplarily, the slot region 30 is in a strip shape, and the slot region 30 is perpendicular to the second microstrip line 112 .

[0057] In the above implementation, the slot region 30 and the second microstrip line 112 are perpendicular to each other in the arrangement direction, which is conducive to achieving uniform electric field distribution on the slot antenna aperture and significantly improving the radiation efficiency and gain of the antenna device.

[0058] The length of the slot region 30 depends on the operating frequency of the antenna device. The length of the slot region 30 is between half a wavelength and one wavelength. The width of the slot region 30 is adjusted according to the impedance bandwidth.

[0059] For example, the second microstrip line 112 extends along an orthogonal direction from one side of the slot region 30, across the slot region 30, and to the other side of the slot region. The orthogonal position of the second microstrip line 112 and the slot region 30, as well as the length of the second microstrip line 112, are adjusted based on the uniformity of the electric field distribution and the impedance bandwidth in the slot region 30. This ensures that the antenna device has a consistent electric field distribution across the wireless signal operating frequency band, ultimately resulting in a high-gain radiation effect.

[0060] 3 , in this embodiment, the feeding portion 110 includes at least two second microstrip lines 112 , and the at least two second microstrip lines 112 are sequentially spaced apart along the length direction of the slot region 30 .

[0061] Since the second microstrip lines 112 are arranged in sequence along the length direction of the slot area 30, the second microstrip lines 112 excite the slot area 30 more evenly, which is more conducive to achieving uniform electric field distribution on the slot antenna aperture, and significantly improving the radiation efficiency and gain of the antenna device.

[0062] The number of the second microstrip lines 112 depends on the length of the slot region 30 . The longer the slot region 30 is, the greater the number of the second microstrip lines 112 is, thereby ensuring uniform excitation of the slot region 30 .

[0063] In this embodiment, the feeding portion 110 further includes a third microstrip line 113 . The length direction of the third microstrip line 113 is consistent with the length direction of the slot region 30 . The third microstrip line 113 is connected to the first microstrip line 111 and each second microstrip line 112 .

[0064] With this design, the first microstrip line 111 and the second microstrip line 112 can be connected together through the third microstrip line 113, thereby achieving electrical connection between the first microstrip line 111 and the second microstrip line 112. Furthermore, because the length direction of the third microstrip line 113 is consistent with the length direction of the gap region 30, the length direction of the third microstrip line 113 is consistent with the arrangement direction of each second microstrip line 112, which can facilitate the connection of each second microstrip line 112 through the third microstrip line 113.

[0065] Exemplarily, the feed section 110 includes two second microstrip lines 112, one second microstrip line 112 is located at one end of the third microstrip line 113, and the other second microstrip line 112 is located at the other end of the third microstrip line 113. If the feed section 110 includes three or more second microstrip lines 112, the remaining second microstrip lines 112 are evenly spaced between the two second microstrip lines 112.

[0066] Exemplarily, the first microstrip line 111 and the second microstrip line 112 are both perpendicular to the third microstrip line 113 , and the first microstrip line 111 and the second microstrip line 112 are parallel to each other.

[0067] Figure 4 is a schematic structural diagram of the cavity part 20. In combination with Figure 4, in this embodiment, the cavity part 20 includes a first side plate 210, a back plate 220 and a second side plate 230 connected in sequence. The first side plate 210 and the second side plate 230 are arranged opposite to each other, and the first side plate 210 and the second side plate 230 are respectively connected to the substrate 10.

[0068] In this way, a cavity can be enclosed by the first side plate 210 , the back plate 220 and the second side plate 230 . In addition, at least one of the first side plate 210 and the second side plate 230 is electrically connected to the grounding portion 120 , thereby achieving grounding of the cavity member 20 .

[0069] In some examples, the first side plate 210, the back plate 220 and the second side plate 230 are mechanically stamped from the same plate to form the cavity member 20. In other examples, the cavity member 20 is formed by welding the first side plate 210, the back plate 220 and the second side plate 230 from three plates.

[0070] The embodiment of the present application provides two configurations of the gap region 30 , which are respectively introduced below.

[0071] The first setting method, see Figure 4. In this embodiment, the cavity part 20 also includes a first side plate 240 and a second side plate 250. The first side plate 240 and the second side plate 250 are located in the same plane, and the first side plate 240 and the second side plate 250 are arranged opposite to the back plate 220. The first side plate 240 is connected to the first side plate 210, and the second side plate 250 is connected to the second side plate 230. The side edge of the first side plate 240 away from the first side plate 210 and the side edge of the second side plate 250 away from the second side plate 230 are spaced apart to form a gap area 30.

[0072] In this design, the first side plate 240 is spaced apart from a side edge of the first side plate 210 and the second side plate 250 is spaced apart from a side edge of the second side plate 230, that is, there is a hollow area between the first side plate 240 and the second side plate 250. A gap area 30 can be formed by the first side plate 240 and the second side plate 250, that is, the setting of the gap area 30 on the cavity part 20 is realized.

[0073] Exemplarily, the ground portion 120 and the feeding portion 110 are located on the same surface of the substrate 10 .

[0074] With this design, the ground portion 120 and the feeding portion 110 are disposed on the same surface of the substrate 10 , which can effectively reduce the difficulty of manufacturing the substrate 10 , thereby reducing the manufacturing cost of the antenna device.

[0075] Since the gap region 30 is formed by the cavity member 20 , there is no need to form the gap region 30 on the substrate 10 . In this way, the feeding portion 110 and the grounding portion 120 can be designed on the same surface of the substrate 10 , which not only reduces the manufacturing difficulty of the substrate 10 , but also facilitates the electrical connection between the feeding portion 110 and the grounding portion 120 and the RF coaxial line 100 .

[0076] In this embodiment, the first side plate 210 and the second side plate 230 have pins 260 . The pins 260 are inserted into the base plate 10 and connected to the ground portion 120 .

[0077] The pin 260 is inserted into the substrate 10 . On the one hand, the pin 260 can realize a fixed connection between the cavity member 20 and the substrate 10 . On the other hand, the pin 260 can realize an electrical connection between the cavity member 20 and the ground portion 120 .

[0078] In some examples, the substrate 10 has a socket, which corresponds one-to-one to the pin 260, and the socket is located at the grounding portion 120. The size of the socket is slightly smaller than the size of the pin 260, so that the pin 260 inserted into the socket can form an interference fit with the socket, thereby achieving the fixation of the pin 260 in the socket. In other examples, the pin 260 has a barb, so that the pin 260 is fixed in the socket by snapping. In some other examples, the pin 260 is fixed in the socket by welding. This application does not limit the connection method between the cavity member 20 and the substrate 10.

[0079] For example, the cavity member 20 has four pins 260, which are respectively located at the four corners of the cavity member 20. In this way, not only a stable connection between the cavity member 20 and the substrate 10 is achieved, but also uniform grounding between the cavity member 20 and the grounding portion 120 is achieved.

[0080] FIG5 is a schematic structural diagram of another antenna device provided in an embodiment of the present application, which corresponds to another configuration of the slot area 30 .

[0081] Figures 6 and 7 are both schematic structural diagrams of another type of substrate 10. Figure 6 and Figure 5 have the same viewing angle, while Figure 7 has the opposite viewing angle to Figure 6. In conjunction with Figures 6 and 7, the ground portion 120 and the feed portion 110 are located on opposite sides of the substrate 10, respectively. The ground portion 120 is arranged opposite to the cavity member 20, and the middle portion of the ground portion 120 is hollowed out to form a gap area 30. The middle portion of the ground portion 120 is hollowed out, which means that the middle portion of the ground portion 120 is hollowed out. Neither the ground portion 120 nor the feed portion 110 exists in the hollowed-out area, but only the insulating base material of the substrate 10.

[0082] With this design, the grounding portion 120 and the feeding portion 110 are located on opposite sides of the substrate 10, ensuring a certain distance between them. The gap region 30 is formed by hollowing out between the grounding portions 120, thus achieving the arrangement of the gap region 30 on the substrate 10.

[0083] In the second configuration, the cavity member 20 does not need to be provided with the first side plate 240 and the second side plate 250 (see FIG. 8 ), which can simplify the manufacturing process of the cavity member 20 and help reduce the manufacturing cost.

[0084] In order to improve the connection stability between the cavity part 20 and the substrate, in this embodiment, the cavity part 20 also includes a first connecting plate 270 and a second connecting plate 280, the first connecting plate 270 and the second connecting plate 280 are located in the same plane, and the first connecting plate 270 and the second connecting plate 280 are arranged opposite to the back plate 220, the first connecting plate 270 is connected to the first side plate 210, and the second connecting plate 280 is connected to the second side plate 230.

[0085] In the above implementation, since the first connecting plate 270 and the second connecting plate 280 are located in the same plane, the first connecting plate 270 and the second connecting plate 280 can be connected to the substrate 10 at the same time, thereby effectively increasing the contact area between the cavity part 20 and the substrate 10, and further increasing the connection stability between the cavity part 20 and the substrate 10.

[0086] Since the feeding portion 110 and the grounding portion 120 are respectively located on opposite sides of the substrate 10, in order to facilitate the connection of the RF coaxial line 100, the substrate 10 further includes a connecting portion 130, and the first end and the second end of the connecting portion 130 are respectively located on opposite sides of the substrate 10. The first end of the connecting portion 130 is connected to the feeding portion 110, and the second end of the connecting portion 130 is close to the grounding portion 120.

[0087] With this design, the feeding portion 110 is connected to the inner conductor of the RF coaxial line 100 through the connecting portion 130 , and the grounding portion 120 is connected to the outer conductor of the RF coaxial line 100 , which can facilitate the connection of the feeding portion 110 and the grounding portion 120 to the RF coaxial line 100 respectively.

[0088] An embodiment of the present application provides a communication device, including the antenna device shown in Figures 1 to 8.

[0089] The communication device is equipped with an antenna device, which includes a substrate 10 and a cavity part 20. The substrate 10 can serve as a mounting base for the cavity part 20, as well as a feeding network and ground plane for the slot antenna, and can also serve as a component of the slot area 30 in some cases. The cavity part 20 can serve as a cavity for the slot antenna, and can also serve as a component of the slot area 30 in some cases. Therefore, the antenna device can include only two parts, the substrate 10 and the cavity part 20, with high integration and low manufacturing cost. After feeding power to the feeding part 110 on the substrate 10, the slot area 30 can be stimulated to form radiation, so that the antenna device forms a slot antenna, which has the characteristics of omnidirectional high-gain radiation, thereby solving the polarization difference problem between the communication device and the gateway side.

[0090] For example, the communication device provided in the embodiment of the present application is a router, or other communication device that needs to send and receive wireless signals, for example, a computer, a mobile terminal, a car, etc. This application does not limit the type of communication device.

[0091] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present disclosure belongs. The words “first”, “second”, “third” and similar terms used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as “a” or “an” do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as “include” or “comprise” mean that the elements or objects appearing before “include” or “comprises” include the elements or objects listed after “include” or “comprises” and their equivalents, and do not exclude other elements or objects. Words such as “connect” or “connected” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Up”, “down”, “left”, “right” and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0092] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of this application in detail. It should be understood that the above are only specific implementation methods of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of this application should be included in the scope of protection of this application.

Claims

1. An antenna device, characterized in that: It comprises a substrate (10) and a cavity member (20); The substrate (10) has a feeding portion (110) and a grounding portion (120), and the feeding portion (110) and the grounding portion (120) are spaced apart. The cavity part (20) is connected to the substrate (10), and the cavity part (20) is electrically connected to the grounding part (120); The substrate (10) or the cavity member (20) has a gap region (30), and the orthographic projection of the gap region (30) on the plane where the substrate (10) is located intersects with the feeding portion (110).

2. The antenna device according to claim 1, wherein The feeding portion (110) includes a first microstrip line (111) and a second microstrip line (112); The first microstrip line (111) is electrically connected to the second microstrip line (112), and one end of the first microstrip line (111) away from the second microstrip line (112) is close to the ground portion (120); The orthographic projection of the gap region (30) on the plane where the substrate (10) is located intersects with the second microstrip line (112).

3. The antenna device according to claim 2, wherein: The slot region (30) is in the shape of a long strip, and the slot region (30) is perpendicular to the second microstrip line (112).

4. The antenna device according to claim 2, wherein: The feeding portion (110) includes at least two second microstrip lines (112); At least two of the second microstrip lines (112) are arranged in sequence and spaced apart along the length direction of the slot area (30).

5. The antenna device according to claim 4, wherein: The feeding portion (110) further includes a third microstrip line (113); The length direction of the third microstrip line (113) is consistent with the length direction of the gap region (30), and the third microstrip line (113) is respectively connected to the first microstrip line (111) and each of the second microstrip lines (112).

6. The antenna device according to any one of claims 1 to 5, characterized in that: The cavity member (20) comprises a first side plate (210), a back plate (220) and a second side plate (230) which are connected in sequence; The first side plate (210) and the second side plate (230) are arranged opposite to each other, the first side plate (210) and the second side plate (230) are respectively connected to the base plate (10), and at least one of the first side plate (210) and the second side plate (230) is electrically connected to the grounding portion (120).

7. The antenna device according to claim 6, wherein: The cavity member (20) further includes a first side plate (240) and a second side plate (250); The first side panel (240) and the second side panel (250) are located in the same plane, and the first side panel (240) and the second side panel (250) are arranged opposite to the back panel (220), the first side panel (240) is connected to the first side panel (210), and the second side panel (250) is connected to the second side panel (230), and a side edge of the first side panel (240) away from the first side panel (210) and a side edge of the second side panel (250) away from the second side panel (230) are spaced apart to form the gap area (30).

8. The antenna device according to claim 7, wherein: The grounding portion (120) and the feeding portion (110) are located on the same surface of the substrate (10).

9. The antenna device according to claim 6, wherein: The first side plate (210) and the second side plate (230) have pins (260); The plug pin (260) is plugged into the substrate (10), and the plug pin (260) is connected to the grounding portion (120).

10. The antenna device according to any one of claims 1 to 5, characterized in that: The grounding portion (120) and the feeding portion (110) are respectively located on two opposite sides of the substrate (10); The grounding portion (120) is arranged opposite to the cavity member (20), and a middle portion of the grounding portion (120) is hollowed out to form the gap area (30).

11. The antenna device according to claim 10, wherein: The substrate (10) further comprises a connecting portion (130); The first end and the second end of the connecting portion (130) are respectively located on opposite sides of the substrate (10), the first end of the connecting portion (130) is connected to the feeding portion (110), and the second end of the connecting portion (130) is close to the grounding portion (120).

12. A communication device, characterized in that: The antenna device comprises the antenna device according to any one of claims 1 to 11.

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