Antenna device and communication equipment

Abstract

The utility model discloses an antenna device and communication equipment, and relates to the technical field of electronics. The antenna device comprises a substrate and a cavity member. The substrate is provided with a feed part and a grounding part, and the feed part and the grounding part are spaced; the cavity part is connected with the substrate, and the cavity part is electrically connected with the grounding part; the substrate or the cavity part is provided with a gap area, and the orthographic projection of the gap area on the plane where the substrate is located intersects with the feed part. According to the embodiment of the invention, the problem of polarization difference between the communication equipment and the gateway side can be solved.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to antenna devices and communication equipment. Background Art

[0002] The antenna device is an important component of the communication equipment, which is used to realize the transmission and reception of signals.

[0003] 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.

[0004] However, since the dipole antenna has only one polarization, and its polarization direction is consistent with the antenna arm of the dipole antenna, there is a polarization difference between the communication device equipped with the dipole antenna and the gateway side. Utility Model Content

[0005] The embodiment of 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:

[0006] In a first aspect, an antenna device is provided, the antenna device comprising a substrate and a cavity part, the substrate providing a mounting base for the cavity part, and the cavity part being capable of forming a cavity. The substrate has a feeding part and a grounding part, and the feeding part and the grounding part are spaced apart. The feeding part is used to transmit electrical signals, and the grounding part is used to provide a grounding surface for the antenna device. The cavity part is connected to the substrate, and the cavity part is electrically connected to the grounding part, so that the grounding part is used to achieve the grounding of the cavity part. The substrate or the cavity part has a gap area, and the gap area is intersected with the feeding part in the positive projection of the plane where the substrate is located. In this way, after feeding, the feeding part can excite the gap 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.

[0007] The antenna device provided in the embodiment of the present application has at least the following effects:

[0008] 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 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.

[0009] 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. One end of the first microstrip line away from the second microstrip line is close to the grounding portion, so that the distance between the first microstrip line and the grounding 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 grounding 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, and 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.

[0010] In one implementation of the present application, the slot region is in the shape of a long strip, and the slot region 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, 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.

[0011] In one implementation of the present application, the feed portion includes at least two second microstrip lines, and the at least two second microstrip lines are sequentially arranged at intervals along the length direction of the slot region. Since the second microstrip lines are sequentially arranged at intervals along the length direction of the slot region, the excitation of the slot region by the second microstrip lines is more uniform, 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.

[0012] In one implementation of the present application, the feeding unit further includes a third microstrip line, the length direction of the third microstrip line is consistent with the length direction of the gap region, and the third microstrip line is respectively connected to the first microstrip line and each of the second microstrip lines. With such a design, the first microstrip line and the second microstrip line can be connected together through the third microstrip line, thereby achieving electrical connection between the first microstrip line and the second microstrip line. In addition, since the length direction of the third microstrip line is consistent with the length direction of the gap region, the length direction of the third microstrip line is consistent with the arrangement direction of each of the second microstrip lines, which can facilitate connecting each of the second microstrip lines through the third microstrip line.

[0013] In one implementation of the present application, the cavity member includes a first side plate, a back plate, and a second side plate connected in sequence, the first side plate and the second side plate are arranged opposite to each other, and the first side plate and the second side plate are respectively connected to the substrate. In this way, a cavity can be enclosed and formed by the first side plate, the back plate, and the second side plate. In addition, at least one of the first side plate and the second side plate is electrically connected to the grounding portion, thereby realizing the grounding of the cavity member.

[0014] In one implementation of the present application, the cavity member further includes a first side plate and a second side plate, the first side plate and the second side plate are located in the same plane, and the first side plate and the second side plate are arranged opposite to the back plate, the first side plate is connected to the first side plate, the second side plate is connected to the second side plate, and a side edge of the first side plate away from the first side plate and a side edge of the second side plate away from the second side plate are spaced apart to form the gap area. With such a design, the gap area can be formed by the first side plate and the second side plate, that is, the setting of the gap area on the cavity member is realized.

[0015] In one implementation of the present application, the grounding portion and the feeding portion are located on the same surface of the substrate. In this design, the grounding portion and the feeding portion are both arranged on the same surface of the substrate, which can effectively reduce the difficulty of manufacturing the substrate, thereby reducing the manufacturing cost of the antenna device.

[0016] In one implementation of the present application, the first side plate and the second side plate have pins, the pins are inserted into the substrate, and the pins are connected to the grounding portion. The pins are inserted into the substrate, and on the one hand, the pins can realize a fixed connection between the cavity member and the substrate, and on the other hand, the pins can realize an electrical connection between the cavity member and the grounding portion.

[0017] In one implementation of the present application, the grounding portion and the feeding portion are respectively located on opposite sides of the substrate, the grounding portion is arranged opposite to the cavity member, and the middle portion of the grounding portion has a hollowing out to form the gap area. With such a design, the grounding portion and the feeding portion are respectively located on opposite sides of the substrate, which can ensure the mutual spacing between the two. The gap area is formed by the hollowing out between the grounding portions, thereby realizing the setting of the gap area on the substrate.

[0018] In one implementation of the present application, the substrate further has a connection portion, the first end and the second end of the connection portion are respectively located on opposite sides of the substrate, the first end of the connection portion is connected to the feeding portion, and the second end of the connection portion is close to the grounding portion. Since the feeding portion and the grounding portion are respectively located on opposite sides of the substrate, the second end of the connection portion is close to the grounding portion, so that the connection portion can be used to facilitate the connection of the feeding portion and the grounding portion to the RF coaxial line, that is, the feeding portion is connected to the inner conductor of the RF coaxial line through the connection portion, and the grounding portion is connected to the outer conductor of the RF coaxial line.

[0019] According to a second aspect, a communication device is provided, wherein the communication device comprises the antenna device according to the first aspect.

[0020] The communication device provided in the embodiment of the present application has at least the following effects:

[0021] The communication device is equipped with the antenna device, and the antenna device 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 can also serve as a component of the slot area in some cases. The cavity part can serve as the cavity of the slot antenna, and can also serve as 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 feeding 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

[0022] Figure 1 A schematic diagram of the structure of an antenna device provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structure of an antenna device provided in an embodiment of the present application;

[0024] Figure 3A schematic diagram of the structure of a substrate provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of the cavity member provided in an embodiment of the present application;

[0026] Figure 5 A schematic diagram of the structure of another antenna device provided in an embodiment of the present application;

[0027] Figure 6 A schematic diagram of the structure of another substrate provided in an embodiment of the present application;

[0028] Figure 7 A schematic diagram of the structure of another substrate provided in an embodiment of the present application;

[0029] Figure 8 A schematic diagram of the structure of another cavity component provided in an embodiment of the present application.

[0030] Legend:

[0031] 10. Substrate;

[0032] 110. Power feeder;

[0033] 111, a first microstrip line; 112, a second microstrip line; 113, a third microstrip line;

[0034] 120, grounding part;

[0035] 130, connecting part;

[0036] 20. Cavity parts;

[0037] 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;

[0038] 30. Gap area;

[0039] 100. Coaxial cable.

[0040] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] The terms used in the implementation section of the present application are only used to explain the embodiments of the present application and are not intended to limit the present application.

[0042] The antenna device is an important component of the communication equipment, which is used to realize the transmission and reception of signals.

[0043] 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.

[0044] However, since the dipole antenna has only one polarization, and its polarization direction is consistent with the antenna arm of the dipole antenna, there is a polarization difference between the communication device equipped with the dipole antenna and the gateway side.

[0045] In order to increase the horizontal polarization component, in the related art, it is considered to tilt the dipole antenna and control the tilt angle to achieve the 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 causing the coverage performance of the communication equipment on any polarization plane to be poor compared to pure single polarization. At the same time, since the tilted posture has higher requirements for space, 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 middle vertical monopole together forms a three-in-one antenna. This tri-polarized antenna also has the problem of large size.

[0046] In order to solve the above technical problems, an embodiment of the present application provides an antenna device, Figure 1 is a schematic diagram of the structure of the antenna device, see Figure 1 In this embodiment, the antenna device includes a substrate 10 and a cavity member 20 .

[0047] Figure 2 is a schematic diagram of the structure of the antenna device. Figure 2 Perspective and Figure 1 The opposite perspective, combined Figure 2 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 member 20 is connected to the substrate 10, and the cavity member 20 is electrically connected to the grounding portion 120. The substrate 10 or the cavity 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 portion 110.

[0048] 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 positive 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 excite 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 device and the gateway side.

[0049] The antenna device provided in the embodiment of the present application has at least the following effects:

[0050] The substrate 10 can serve as both the installation base for the cavity part 20 and the feeding network and ground plane of 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 the cavity of 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 of its own size. After feeding 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.

[0051] For example, the cavity member 20 is made of a plate material by sheet metal processing and mechanical stamping, which has a mature process and low cost. The substrate is a printed circuit board, which is not only light in weight, but also conducive to the integrated design of the feeding part 110 and the grounding part 120, which can improve the degree of miniaturization while reducing the manufacturing cost.

[0052] Figure 3 is a schematic diagram of the structure of the substrate 10, 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, and the orthographic projection of the gap area 30 on the plane where the substrate 10 is located intersects with the second microstrip line 112.

[0053] In this way, the distance between the first microstrip line 111 and the grounding portion 120 is relatively close, which is conducive to the connection of the two to the RF coaxial line 100, that is, the first microstrip line 111 is connected to the inner conductor of the RF coaxial line 100, and the grounding portion 120 is connected to the outer conductor of the RF coaxial line 100. Since the first microstrip line 111 is electrically connected to the second microstrip line 112, the electrical signal of the first microstrip line 111 will be transmitted to the second microstrip line 112 after being fed by the RF coaxial line 100, and since the orthographic projection of the slot area 30 on the plane where the substrate 10 is located intersects with the second microstrip line 112, the second microstrip line 112 can excite the slot area 30 to form radiation.

[0054] Exemplarily, the slot region 30 is in a strip shape, and the slot region 30 is perpendicular to the second microstrip line 112 .

[0055] In the above implementation, in the arrangement direction, the slot region 30 and the second microstrip line 112 are perpendicular to each other, 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.

[0056] 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.

[0057] Exemplarily, the second microstrip line 112 extends from one side of the slot region 30, across the slot region 30, to the other side of the slot region along the orthogonal direction. The orthogonal position between the second microstrip line 112 and the slot region 30, and the length of the second microstrip line 112 are adjusted depending on the uniformity of the field distribution and the impedance bandwidth on the slot region 30. In this way, the antenna device is implemented with a field distribution having a uniform electric field distribution in the wireless signal working frequency band, and finally forms a high-gain radiation effect.

[0058] Continue to see Figure 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 arranged in sequence along the length direction of the slot region 30 .

[0059] 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.

[0060] 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 .

[0061] 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 , and the third microstrip line 113 is respectively connected to the first microstrip line 111 and each second microstrip line 112 .

[0062] With such a design, the first microstrip line 111 and the second microstrip line 112 can be connected together through the third microstrip line 113, thereby realizing electrical connection between the first microstrip line 111 and the second microstrip line 112. Moreover, since 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, so that each second microstrip line 112 can be connected through the third microstrip line 113.

[0063] Exemplarily, the feeding 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 feeding section 110 includes three or more second microstrip lines 112, the remaining second microstrip lines 112 are evenly spaced and arranged between the two second microstrip lines 112.

[0064] 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.

[0065] Figure 4 is a schematic diagram of the structure of the cavity member 20, combined with Figure 4 In this embodiment, the cavity member 20 includes 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, and the first side plate 210 and the second side plate 230 are respectively connected to the substrate 10.

[0066] In this way, a cavity can be enclosed and formed 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 .

[0067] 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.

[0068] The embodiment of the present application provides two configurations of the gap region 30 , and the two configurations are respectively introduced below.

[0069] The first setting method, see Figure 4 In the present embodiment, the cavity member 20 further 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, the second side plate 250 is connected to the second side plate 230, and a side edge of the first side plate 240 away from the first side plate 210 and a side edge of the second side plate 250 away from the second side plate 230 are spaced apart to form a gap area 30.

[0070] In such a design, a side edge of the first side plate 240 away from the first side plate 210 and a side edge of the second side plate 250 away from the second side plate 230 are spaced apart, that is, there is a hollow area between the first side plate 240 and the second side plate 250, and 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.

[0071] Exemplarily, the grounding portion 120 and the feeding portion 110 are located on the same surface of the substrate 10 .

[0072] In this design, the grounding 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.

[0073] Since the gap area 30 is formed by the cavity member 20, there is no need to form the gap area 30 on the substrate 10. In this way, the feeding part 110 and the grounding part 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 part 110 and the grounding part 120 and the RF coaxial line 100.

[0074] In this embodiment, the first side plate 210 and the second side plate 230 have a pin 260 . The pin 260 is plugged into the base plate 10 , and the pin 260 is connected to the grounding portion 120 .

[0075] 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 grounding portion 120 .

[0076] In some examples, the substrate 10 has a jack, which corresponds to the pin 260 one by one, and the jack is located at the grounding portion 120. The size of the jack is slightly smaller than the size of the pin 260, so that the pin 260 inserted in the jack can form an interference fit with the jack, thereby achieving the fixation of the pin 260 in the jack. In other examples, the pin 260 has a barb, so that the pin 260 is fixed in the jack by snapping. In some other examples, the pin 260 is fixed in the jack by welding. The present application does not limit the connection method between the cavity member 20 and the substrate 10.

[0077] Exemplarily, the cavity member 20 has four pins 260, and the four pins 260 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.

[0078] Figure 5 A schematic diagram of the structure of another antenna device provided in an embodiment of the present application, wherein the antenna device corresponds to another configuration of the slot area 30 .

[0079] Figure 6 and Figure 7 They are all structural schematic diagrams of another substrate 10. Figure 6 and Figure 5 The same perspective, Figure 7 and Figure 6 The opposite perspective, combined Figure 6 and Figure 7 The grounding part 120 and the feeding part 110 are respectively located on opposite sides of the substrate 10, the grounding part 120 is arranged opposite to the cavity part 20, and the middle part of the grounding part 120 is hollowed out to form a gap area 30. The middle part of the grounding part 120 is hollowed out, which means that the middle of the grounding part 120 is hollowed out, and there is neither the grounding part 120 nor the feeding part 110 in the hollowed-out area, and only the insulating base material of the substrate 10 exists.

[0080] In this design, the grounding portion 120 and the feeding portion 110 are respectively located on opposite sides of the substrate 10, and the gap between them can be ensured. The gap area 30 is formed by hollowing out between the grounding portions 120, so that the gap area 30 is set on the substrate 10.

[0081] 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 Figure 8 ), which can simplify the manufacturing process of the cavity member 20 and help reduce the manufacturing cost.

[0082] In order to improve the connection stability between the cavity part 20 and the substrate, in the present 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.

[0083] 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 piece 20 and the substrate 10, and further increasing the connection stability between the cavity piece 20 and the substrate 10.

[0084] 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, illustratively, the substrate 10 also has 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.

[0085] With such a design, the feeding part 110 is connected to the inner conductor of the RF coaxial line 100 through the connecting part 130 , and the grounding part 120 is connected to the outer conductor of the RF coaxial line 100 , which can facilitate the connection of the feeding part 110 and the grounding part 120 to the RF coaxial line 100 respectively.

[0086] The present application provides a communication device, including Figures 1 to 8 The antenna device shown.

[0087] 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 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 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.

[0088] For example, the communication device provided in the embodiment of the present application is a router, or other communication devices that need to send and receive wireless signals, for example, a computer, a mobile terminal, a car, etc. The present application does not limit the type of communication device.

[0089] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The words "first", "second", "third" and similar words 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 "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" and similar words 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.

[0090] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. An antenna device, characterized in that: It comprises a substrate (10) and a cavity member (20); The substrate (10) comprises a feeding portion (110) and a grounding portion (120), wherein the feeding portion (110) and the grounding portion (120) are spaced apart from each other; The cavity member (20) is connected to the substrate (10), and the cavity member (20) is electrically connected to the grounding portion (120); The substrate (10) or the cavity member (20) has a gap region (30), and an 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, characterized in that The feeding portion (110) comprises 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 grounding portion (120); The orthographic projection of the slot 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, characterized in that 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, characterized in that: The feeding portion (110) comprises at least two of the 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 region (30).

5. The antenna device according to claim 4, characterized in that: The feeding unit (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), 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 substrate (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, characterized in that: The cavity member (20) further comprises 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) and the first side panel (210) are connected, and the second side panel (250) and the second side panel (230) are connected, 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, characterized in that: 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, characterized in that: 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 surfaces 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, characterized in that: 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 invention comprises the antenna device according to any one of claims 1 to 11.

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