Slot antenna and intelligent gateway

Abstract

According to the slot antenna and the intelligent gateway, the slot antenna is provided with the shell made of the metal material, the internal structure can be protected, and the slot antenna adapts to the environment with the large temperature and humidity change range. The side wall of the housing is provided with a gap to realize electromagnetic signal radiation. And the feed assembly is arranged on the inner wall of the shell. A feed sheet in the feed assembly comprises a first dielectric layer, a first metal layer, a second dielectric layer and a second metal layer which are arranged in sequence. The second dielectric layer is a support structure of the feed sheet and provides support for the first dielectric layer, the first metal layer and the second metal layer. The gap is located between the first conductive region and the second conductive region, and the first conductive region and the second conductive region provide electromagnetic excitation for the gap to form electromagnetic radiation. According to the technical scheme, the slot antenna is formed by slotting the surface of the metal shell, a feed structure is achieved through coupling of the feed pieces, the product appearance and reliability are good, the cost is low, shielding of the shell to electromagnetic radiation of the antenna is avoided, and the antenna performance is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a slot antenna and an intelligent gateway. Background Art

[0002] With the development of wireless communication and Internet of Things technology, Wi-Fi technology has developed rapidly and is widely used in mobile devices, smart homes and other fields.

[0003] Wireless gateways are key devices for achieving Wi-Fi access, connecting a large number of terminal devices to the Internet to realize the interconnection of all things. Antennas, as the transceiver of wireless gateways, play a vital role in the performance of wireless gateways.

[0004] In some gateway devices, the gateway device housing is a metal shell, and the antenna is built into the metal shell. The metal shell has good stability, but the metal shell has a shielding effect, which causes the antenna installed inside the metal shell to not perform well. Utility Model Content

[0005] The embodiments of the present disclosure provide a slot antenna and a smart gateway, providing an antenna placed inside a metal shell, thereby improving the antenna radiation performance while ensuring the stability of the metal shell.

[0006] In some embodiments, an intelligent gateway is provided, comprising:

[0007] A housing, a side wall of which is provided with at least one slit, wherein the housing is made of metal;

[0008] A feeding assembly is coupled to the housing, and the feeding assembly includes:

[0009] A feeding plate is located on the inner wall of the housing, and the feeding plate includes:

[0010] a first dielectric layer connected to the housing;

[0011] The first metal layer includes a first conductive area and a second conductive area that are not conductive to each other; the gap is located between the first conductive area and the second conductive area;

[0012] a second dielectric layer, located above the first metal layer, wherein the thickness of the second dielectric layer is greater than that of the first dielectric layer;

[0013] The second metal layer includes a third conductive region and a fourth conductive region that are not connected to each other, and the gap is located between the third conductive region and the fourth conductive region;

[0014] a first conductive member, one end of which is connected to the first conductive area, and the other end of which is connected to the third conductive area;

[0015] A second conductive element has one end connected to the second conductive area and the other end connected to the fourth conductive area.

[0016] The technical solutions in the above technical solutions have the following advantages or beneficial effects:

[0017] The intelligent gateway provided by the present disclosure has a metal shell, which can protect the internal structure and adapt to environments with large temperature and humidity changes. The side walls of the shell are provided with gaps to realize electromagnetic signal radiation. The feeding assembly is arranged on the inner wall of the shell. The feeding plate in the feeding assembly includes a first dielectric layer, a first metal layer, a second dielectric layer and a second metal layer arranged in sequence. The second dielectric layer is a supporting structure of the feeding plate, which provides support for the first dielectric layer, the first metal layer and the second metal layer. The second metal layer of the feeding plate is exposed inside the shell and is used to connect to the gateway device. The first conductive part connects the first conductive area and the third conductive area, and the second conductive part connects the second conductive area and the fourth conductive area, and conducts the electromagnetic excitation provided by the gateway device to the first conductive area and the second conductive area. The gap is located between the first conductive area and the second conductive area, and the first conductive area and the second conductive area provide electromagnetic excitation for the gap to form electromagnetic radiation. This technical solution forms a slot antenna by opening a slot on the surface of a metal shell, and realizes the feeding structure through coupling of a feed plate. The metal shell makes the product have a good appearance and reliability, and low cost. At the same time, the slot antenna composed of the slot and the feeding component can avoid the shielding of the antenna's electromagnetic radiation by the shell, thereby improving the antenna performance.

[0018] Some embodiments provide a smart gateway, further comprising a coaxial line located outside the second metal layer, the coaxial line comprising: an inner conductor and an outer conductor; the inner conductor is electrically connected to the third conductive area; the outer conductor is electrically connected to the fourth conductive area.

[0019] The technical solution in the above technical solution has the following advantages or beneficial effects: the coaxial line is connected to the third conductive area and the fourth conductive area to achieve circuit connection.

[0020] Some embodiments provide a smart gateway, wherein a width of the first dielectric layer is greater than a width of the gap, and a length of the first dielectric layer is less than a length of the gap.

[0021] The technical solution in the above technical solution has the following advantages or beneficial effects: the width of the first dielectric layer is greater than the width of the gap, and the length of the first dielectric layer is less than the length of the gap, so that the first dielectric layer covers the width direction of the gap, and the first dielectric layer isolates the first metal layer from the shell, so that the first metal layer and the shell are not in contact.

[0022] Some embodiments provide a smart gateway, wherein the sum of the width of the first conductive region and the width of the second conductive region is smaller than the width of the first dielectric layer.

[0023] The technical solution in the above technical solution has the following advantages or beneficial effects: the sum of the width of the first conductive area and the width of the second conductive area is smaller than the width of the first dielectric layer, so that the first dielectric layer can cover the first conductive area and the second conductive area, thereby achieving isolation between the first metal layer and the shell.

[0024] Some embodiments provide a slot antenna, wherein the coaxial line further includes an inner insulator, and the inner insulator is located between the inner conductor and the outer conductor.

[0025] The technical solution in the above technical solution has the following advantages or beneficial effects: the inner insulator is located between the inner conductor and the outer conductor, and the inner insulator electrically isolates the inner conductor from the outer conductor.

[0026] Some embodiments provide a smart gateway, wherein the coaxial line further includes an outer insulator, the outer insulator is coated on the outside of the outer conductor, and the outer insulator is in contact with the second metal layer.

[0027] The technical solution in the above technical solution has the following advantages or beneficial effects: the outer insulator is coated on the outside of the outer conductor, and the outer insulator is in contact with the second metal layer so that the second metal layer is not connected to the outer conductor, thereby achieving electrical isolation between the second metal layer and the outer conductor.

[0028] Some embodiments provide a smart gateway, wherein the distance between an edge of the first conductive area and a center line of the gap is equal to the distance between an edge of the second conductive area and the center line of the gap.

[0029] The above technical solution has the following advantages or beneficial effects: the distance between the edge of the first conductive area and the centerline of the gap is equal to the distance between the edge of the second conductive area and the centerline of the gap. The center of the first conductive area and the second conductive area serves as a feeding point, improving electromagnetic radiation efficiency.

[0030] Some embodiments provide a smart gateway, wherein the width of the second dielectric layer is greater than or equal to the width of the first dielectric layer, and the length of the second dielectric layer is greater than or equal to the length of the first dielectric layer.

[0031] The technical solution in the above technical solution has the following advantages or beneficial effects: the width of the second dielectric layer is greater than or equal to the width of the first dielectric layer, and the length of the second dielectric layer is greater than or equal to the length of the first dielectric layer, so that the second dielectric layer can cover the entire first dielectric layer, and the second dielectric layer can support the first dielectric layer.

[0032] Some embodiments provide a smart gateway, wherein the width of the second dielectric layer is greater than the width of the gap, and the length of the second dielectric layer is less than the length of the gap.

[0033] The technical solution in the above technical solution has the following advantages or beneficial effects: the width of the second dielectric layer is greater than the width of the gap, and the length of the second dielectric layer is less than the length of the gap, so that the second dielectric layer covers the width direction of the gap, and the second dielectric layer isolates the second metal layer from the shell, so that the second metal layer and the shell do not contact each other.

[0034] Some embodiments provide a slot antenna, comprising: a housing having a sidewall formed with a slot, the housing being made of metal;

[0035] A feeding assembly is coupled to the housing, and the feeding assembly includes:

[0036] A feeding plate is located on the inner wall of the housing, and the feeding plate includes:

[0037] a first dielectric layer connected to the housing;

[0038] The first metal layer includes a first conductive area and a second conductive area that are not conductive to each other; the gap is located between the first conductive area and the second conductive area;

[0039] a second dielectric layer, located above the first metal layer, wherein the thickness of the second dielectric layer is greater than that of the first dielectric layer;

[0040] The second metal layer includes a third conductive region and a fourth conductive region that are not connected to each other, and the gap is located between the third conductive region and the fourth conductive region;

[0041] a first conductive member, one end of which is connected to the first conductive area, and the other end of which is connected to the third conductive area;

[0042] A second conductive element has one end connected to the second conductive area and the other end connected to the fourth conductive area.

[0043] The technical solution in the above technical solution has the following advantages or beneficial effects: a slot antenna is formed by opening a slot on the surface of the metal shell, and a feeding structure is realized by coupling the feeding plate. The product has good appearance and reliability and low cost. This technical solution forms a slot antenna by opening a slot on the surface of the metal shell, and a feeding structure is realized by coupling the feeding plate. The product has good appearance and reliability and low cost. At the same time, it avoids the shielding of the antenna's electromagnetic radiation by the shell, thereby improving the antenna performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below are schematic diagrams and do not limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, etc. involved in the embodiments of the present disclosure.

[0045] Figure 1 A diagram of an application scenario of an intelligent gateway provided according to some embodiments;

[0046] Figure 2 A schematic diagram of an intelligent gateway provided according to some embodiments Figure 1 ;

[0047] Figure 3 A schematic diagram of a feeding component provided according to some embodiments Figure 1 ;

[0048] Figure 4 is a schematic cross-sectional view of a feed sheet provided according to some embodiments;

[0049] Figure 5 A schematic cross-sectional view of a feed plate and a housing according to some embodiments;

[0050] Figure 6 is a schematic cross-sectional view of a coaxial line provided according to some embodiments;

[0051] Figure 7 A schematic cross-sectional view of an electrical chip, a housing, and a coaxial line according to some embodiments;

[0052] Figure 8 for Figure 5 A partial schematic diagram of

[0053] Figure 9 A schematic diagram of an intelligent gateway provided according to some embodiments Figure 2 ;

[0054] Figure 10 A schematic diagram of an intelligent gateway provided according to some embodiments Figure 3 . DETAILED DESCRIPTION

[0055] The following will be combined with the accompanying drawings to clearly and in detail describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0056] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be an intermediate element at the same time.

[0057] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present disclosure, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present disclosure.

[0058] Figure 1 This is an application scenario of an intelligent gateway provided by the embodiment of this application. Figure 1 As shown, the user terminal 100 submits access information. The intelligent gateway 200 includes a router, which selects a message path and connects to the external server 300 according to routing, bridging or other business rules.

[0059] The external server 300 responds to the access information by sending a response message. The intelligent gateway 200 receives the response message and forwards the response message to the user terminal.

[0060] To facilitate network connection between the smart gateway 200 and the user terminal, the smart gateway 200 is provided with an antenna, which can be used to convert electrical signals into wireless electromagnetic signals, thereby realizing network connection between the smart gateway 200 and the user terminal.

[0061] Figure 2 A schematic diagram of an intelligent gateway provided according to some embodiments Figure 1 In some embodiments, the smart gateway may include a housing 210. The housing 210 may be a square structure.

[0062] In some embodiments, the housing 210 may be made of metal, which has good environmental adaptability.

[0063] The side wall of the housing 210 may be provided with a gap 211. The width of the gap 211 may be 2-3 mm, and the gap length may be 1 / 2 of the wavelength of the operating frequency. Figure 2 Where L represents the length direction of the gap, and W represents the width direction of the gap.

[0064] For example, when the operating frequency is 2.4 GHz, the gap length may be 55 to 65 mm. For example, the gap length may be 59 to 61 mm. In some embodiments, when the operating frequency is 2.4 GHz, the gap length may be 60 mm.

[0065] In some embodiments, the intelligent gateway may include a feeding component 220. The feeding component 220 is located on the inner wall of the housing 210. The feeding component 220 is coupled to the housing 210.

[0066] In some embodiments, the length direction of the feeding component 220 is consistent with the width direction of the gap; the width direction of the feeding component 220 is consistent with the length direction of the gap.

[0067] Figure 3 A schematic diagram of a feeding component provided according to some embodiments Figure 1 .like Figure 3 As shown, the feeding assembly 220 may include a feeding plate 221. Two ends of the feeding plate 221 span across both sides of the width direction of the gap.

[0068] In some embodiments, the feed plate 221 may be a double-layer metal printed circuit board.

[0069] The feeding assembly 220 may include a coaxial line 222. The two ends of the coaxial line 222 span the width direction of the gap. The coaxial line 222 is located outside the feeding plate 221 and can be electrically connected to the feeding plate 221.

[0070] Figure 4 A schematic cross-sectional view of a feed sheet provided according to some embodiments. Figure 5 Schematic diagram of a cross-section of a feed plate and a housing according to some embodiments. Figure 4 and Figure 5 As shown, the feed plate 221 is a double-layer metal printed circuit board. The feed plate 221 may include: a first dielectric layer 2211, which is located at the bottom of the feed plate 221. The first dielectric layer 2211 is connected to the housing 210.

[0071] The first dielectric layer 2211 and the housing 210 may be connected via a conductive adhesive, or may be connected via a structural member, which is not specifically limited.

[0072] In some embodiments, the first dielectric layer 2211 is an insulating layer or a solder resist layer.

[0073] The feed plate 221 may include a first metal layer 2212 located above the first dielectric layer 2211. The first metal layer 2212 may include a first conductive region 22121 and a second conductive region 22122. The first conductive region 22121 and the second conductive region 22122 are not electrically connected. A gap is located between the first conductive region 22121 and the second conductive region 22122. The first conductive region 22121 is located on one side of the gap, and the second conductive region 22122 is located on the other side of the gap.

[0074] In some embodiments, the width of the first dielectric layer 2211 is greater than the width of the gap, and the length of the first dielectric layer 2211 is less than the length of the gap.

[0075] The length of the first conductive region 22121 is less than or equal to the length of the first dielectric layer 2211 . The first dielectric layer 2211 is filled between the first conductive region 22121 and the housing 210 so that the first conductive region 22121 does not contact the housing 210 .

[0076] The length of the second conductive region 22122 is smaller than that of the first dielectric layer 2211 . The first dielectric layer 2211 is filled between the second conductive region 22122 and the housing 210 so that the second conductive region 22122 does not contact the housing 210 .

[0077] In some embodiments, the first conductive region 22121 does not cover the gap, and the second conductive region 22122 does not cover the gap, so as to avoid interference with electromagnetic signals generated by the gap.

[0078] The sum of the width of the first conductive region 22121 and the width of the second conductive region 22122 is smaller than the width of the first dielectric layer 2211 , and the first metal layer 2212 does not contact the housing 210 .

[0079] The feeding plate 221 may include a second dielectric layer 2213. The second dielectric layer 2213 is located above the first metal layer 2212. The second dielectric layer 2213 is an insulating layer.

[0080] In some embodiments, the thickness of the second dielectric layer 2213 is greater than that of the first dielectric layer 2211 . The second dielectric layer 2213 supports the first metal layer 2212 .

[0081] The feed plate 221 may include a second metal layer 2214 located above the second dielectric layer 2213. The second metal layer 2214 may include a third conductive region 22141 and a fourth conductive region 22142. A gap is located between the third conductive region 22141 and the fourth conductive region 22142. The third conductive region 22141 is located on one side of the gap, and the fourth conductive region 22142 is located on the other side of the gap.

[0082] In some embodiments, the width of the first dielectric layer 2211 is greater than the width of the gap, and the length of the first dielectric layer 2211 is less than the length of the gap, so that the first dielectric layer covers the width direction of the gap. The first dielectric layer isolates the first metal layer from the shell, so that the first metal layer and the shell are not in contact.

[0083] The length of the third conductive region 22141 is less than or equal to the length of the second dielectric layer 2213 . The second dielectric layer 2213 is filled between the third conductive region 22141 and the housing 210 so that the third conductive region 22141 does not contact the first conductive region 22121 .

[0084] The length of the fourth conductive region 22142 is less than or equal to the length of the second dielectric layer 2213 . The second dielectric layer 2213 is filled between the fourth conductive region 22142 and the second conductive region 22122 so that the fourth conductive region 22142 does not contact the second conductive region 22122 .

[0085] In some embodiments, the third conductive region 22141 does not cover the gap, and the fourth conductive region 22142 does not cover the gap, so as to avoid interference with the electromagnetic signal generated by the gap.

[0086] The sum of the width of the third conductive region 22141 and the width of the fourth conductive region 22142 is smaller than the width of the second dielectric layer 2213 , and the second metal layer 2214 does not contact the first metal layer 2212 .

[0087] In some embodiments, the width of the second dielectric layer 2213 may be greater than or equal to the width of the first dielectric layer 2211, and the length of the second dielectric layer 2213 may be greater than or equal to the length of the first dielectric layer 2211, so that the second dielectric layer can cover the entire first dielectric layer and the second dielectric layer can support the first dielectric layer.

[0088] The second dielectric layer 2213 serves as a carrier for the first metal layer 2212 , the second metal layer 2214 , and the first dielectric layer 2211 , and provides support for the first metal layer 2212 , the second metal layer 2214 , and the first dielectric layer 2211 .

[0089] The width of the second dielectric layer is greater than or equal to the width of the first dielectric layer, the length of the second dielectric layer is greater than or equal to the length of the first dielectric layer, and the second dielectric layer provides support for the first dielectric layer 2211 .

[0090] The feed plate 221 may include a first conductive member 2215. The first conductive member 2215 penetrates the second dielectric layer 2213, one end of the first conductive member 2215 is connected to the first conductive region 22111, and the other end of the first conductive member 2215 is connected to the third conductive region 22141, thereby achieving electrical connection between the first conductive region 22111 and the third conductive region 22141.

[0091] The feed plate 221 may include a second conductive member 2216. The second conductive member 2216 penetrates the second dielectric layer 2213, one end of the second conductive member 2216 is connected to the second conductive region 22112, and the other end of the second conductive member 2216 is connected to the fourth conductive region 22142, thereby achieving electrical connection between the second conductive region 22112 and the fourth conductive region 22142.

[0092] In some embodiments, the third conductive region 22141 covers the first conductive region 22111 , and the area of ​​the third conductive region 22141 may be greater than or equal to the area of ​​the first conductive region 22111 .

[0093] The fourth conductive region 22142 covers the second conductive region 22112 , and the area of ​​the fourth conductive region 22142 may be greater than or equal to the area of ​​the second conductive region 22112 .

[0094] Figure 6 A schematic cross-sectional view of a coaxial line according to some embodiments is provided. Figure 7 Schematic diagram of a cross section of a feed plate, housing, and coaxial line according to some embodiments. Figure 6 and Figure 7 As shown, the coaxial line 222 may include an inner conductor 2221 and an outer conductor 2222 .

[0095] An inner insulator 2223 is provided between the inner conductor 2221 and the outer conductor 2222 . The inner insulator 2223 is filled between the inner conductor 2221 and the outer conductor 2222 to prevent the inner conductor 2221 and the outer conductor 2222 from contacting each other.

[0096] The inner conductor 2221 can be electrically connected to the third conductive region 22141, and the outer conductor 2222 can be electrically connected to the fourth conductive region 22142. In some embodiments, the inner conductor 2221 can be electrically connected to the third conductive region 22141, and the outer conductor 2222 can be electrically connected to the fourth conductive region 22142 via solder.

[0097] The coaxial line 222 is located above the second metal layer 2214 . The coaxial line 222 may include an outer insulator 2224 , which covers the outer conductor 2222 to prevent the outer conductor 2222 from contacting the second metal layer 2214 .

[0098] The feeding component 220 is used to receive the excitation signal. When the slot is excited by the excitation signal, it radiates the electromagnetic field to achieve the electromagnetic radiation effect. When in use, the slot is equivalent to a magnetic current source, and the metal shell plane is equivalent to a current source.

[0099] Figure 8 for Figure 5 A partial schematic diagram of . Figure 8 The positional relationship between the feed plate and the gap is shown. As shown in the figure, in some embodiments, the distance between the edge of the first conductive region 22121 and the center line of the gap is represented by W1. The distance between the edge of the second conductive region 22122 and the center line of the gap is represented by W2.

[0100] The distance between the edge of the first conductive region 22121 and the center line of the gap is equal to the distance between the edge of the second conductive region 22122 and the center line of the gap.

[0101] Figure 9 A schematic diagram of an intelligent gateway provided according to some embodiments Figure 2 . Figure 10 A schematic diagram of an intelligent gateway provided according to some embodiments Figure 3 .like Figure 9 and Figure 10 As shown, in some embodiments, the housing 210 may be provided with a plurality of slots and feed assemblies corresponding to the slots. The slots on the housing and the feed assemblies constitute a slot antenna. For convenience, the slots and the feed assemblies corresponding to the slot antennas are referred to below as slot antennas.

[0102] Different slot antennas can be suitable for different operating frequencies. For example, the operating frequency of the first slot antenna can be 2.4 GHz, and the operating frequency of the second slot antenna can be 5 GHz. The first slot antenna 230 and the second slot antenna 240 have different slot widths.

[0103] In some embodiments, the slot can have different shapes, such as a rectangle, a T-shape, or an L-shape. For example, different slot antennas can have the same shape, such as a rectangle. Different slot antennas can have different shapes, such as the first slot antenna 230 having a rectangular slot and the second slot antenna 240 having an L-shape slot.

[0104] Some embodiments provide a slot antenna. The slot antenna provided by the present disclosure has a metal shell, which can protect the internal structure and adapt to environments with large temperature and humidity changes. The side walls of the shell are provided with slots to achieve electromagnetic signal radiation. The feeding assembly is arranged on the inner wall of the shell. The feeding plate in the feeding assembly includes a first dielectric layer, a first metal layer, a second dielectric layer and a second metal layer arranged in sequence. The second dielectric layer is a supporting structure of the feeding plate, providing support for the first dielectric layer, the first metal layer and the second metal layer. The second metal layer of the feeding plate is exposed inside the shell and is used to connect to the gateway device. The first conductive member connects the first conductive area and the third conductive area, and the second conductive member connects the second conductive area and the fourth conductive area, and conducts the electromagnetic excitation provided by the gateway device to the first conductive area and the second conductive area. The slot is located between the first conductive area and the second conductive area, and the first conductive area and the second conductive area provide electromagnetic excitation for the slot to form electromagnetic radiation. This technical solution forms a slot antenna by slitting the surface of a metal shell and realizes a feeding structure through coupling of a feed plate. The product has a good appearance and reliability and is low in cost. At the same time, it avoids shielding of the antenna's electromagnetic radiation by the shell and improves antenna performance.

[0105] Some embodiments provide a slot antenna further comprising a coaxial line located outside the second metal layer. The coaxial line comprises an inner conductor and an outer conductor; the inner conductor is electrically connected to the third conductive region; and the outer conductor is electrically connected to the fourth conductive region. The coaxial line is connected to the third and fourth conductive regions to achieve circuit connection.

[0106] Some embodiments provide a slot antenna, wherein the width of the first dielectric layer is greater than the width of the slot, and the length of the first dielectric layer is less than the length of the slot, so that the first dielectric layer covers the width direction of the slot, and the first dielectric layer isolates the first metal layer from the outer shell, so that the first metal layer and the outer shell are not in contact.

[0107] Some embodiments provide a slot antenna, wherein the sum of the width of the first conductive area and the width of the second conductive area is smaller than the width of the first dielectric layer, so that the first dielectric layer can cover the first conductive area and the second conductive area, thereby isolating the first metal layer from the shell.

[0108] Some embodiments provide a slot antenna, wherein the coaxial line further includes an inner insulator, the inner insulator is located between the inner conductor and the outer conductor, and the inner insulator electrically isolates the inner conductor from the outer conductor.

[0109] Some embodiments provide a slot antenna, wherein the coaxial line further includes an outer insulator, which is coated on the outside of the outer conductor and contacts the second metal layer so that the second metal layer is not connected to the outer conductor, thereby achieving electrical isolation between the second metal layer and the outer conductor.

[0110] Some embodiments provide a slot antenna, wherein the distance between the edge of the first conductive area and the center line of the slot is equal to the distance between the edge of the second conductive area and the center line of the slot, and the centers of the first conductive area and the second conductive area become feeding points, thereby improving electromagnetic radiation efficiency.

[0111] Some embodiments provide a slot antenna, wherein the width of the second dielectric layer is greater than or equal to the width of the first dielectric layer, and the length of the second dielectric layer is greater than or equal to the length of the first dielectric layer, so that the second dielectric layer can cover the entire first dielectric layer and the second dielectric layer can support the first dielectric layer.

[0112] Some embodiments provide a slot antenna, wherein the width of the second dielectric layer is greater than the width of the slot, and the length of the second dielectric layer is less than the length of the slot.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

Claims

1. An intelligent gateway, characterized in that: include: A shell having a side wall formed with a gap, wherein the shell is made of metal; A feeding assembly is coupled to the housing, and the feeding assembly includes: A feeding plate is located on the inner wall of the housing, and the feeding plate includes: a first dielectric layer connected to the housing; The first metal layer includes a first conductive area and a second conductive area that are not conductive to each other; the gap is located between the first conductive area and the second conductive area; a second dielectric layer, located above the first metal layer, wherein the thickness of the second dielectric layer is greater than that of the first dielectric layer; The second metal layer includes a third conductive region and a fourth conductive region that are not connected to each other, and the gap is located between the third conductive region and the fourth conductive region; a first conductive member, one end of which is connected to the first conductive area, and the other end of which is connected to the third conductive area; A second conductive element has one end connected to the second conductive area and the other end connected to the fourth conductive area.

2. The intelligent gateway according to claim 1, characterized in that The feeding assembly further includes: a coaxial line located outside the second metal layer, the coaxial line including: an inner conductor and an outer conductor; The inner conductor is electrically connected to the third conductive area; the outer conductor is electrically connected to the fourth conductive area.

3. The intelligent gateway according to claim 1, characterized in that The width of the first dielectric layer is greater than the width of the gap, and the length of the first dielectric layer is less than the length of the gap.

4. The intelligent gateway according to claim 1, characterized in that The sum of the width of the first conductive region and the width of the second conductive region is smaller than the width of the first dielectric layer.

5. The intelligent gateway according to claim 2, characterized in that: The coaxial line further includes an inner insulator located between the inner conductor and the outer conductor.

6. The intelligent gateway according to claim 5, characterized in that: The coaxial line further includes an outer insulator covering the outer side of the outer conductor.

7. The intelligent gateway according to claim 1, characterized in that: The distance between the edge of the first conductive area and the center line of the gap is equal to the distance between the edge of the second conductive area and the center line of the gap.

8. The intelligent gateway according to claim 1, characterized in that: The width of the second dielectric layer is greater than or equal to the width of the first dielectric layer, and the length of the second dielectric layer is greater than or equal to the length of the first dielectric layer.

9. The intelligent gateway according to claim 1, characterized in that: The width of the second dielectric layer is greater than the width of the gap, and the length of the second dielectric layer is less than the length of the gap.

10. A slot antenna, characterized in that: include: A shell having a side wall formed with a gap, wherein the shell is made of metal; A feeding assembly is coupled to the housing, and the feeding assembly includes: A feeding plate is located on the inner wall of the housing, and the feeding plate includes: a first dielectric layer connected to the housing; The first metal layer includes a first conductive area and a second conductive area that are not conductive to each other; the gap is located between the first conductive area and the second conductive area; a second dielectric layer, located above the first metal layer, wherein the thickness of the second dielectric layer is greater than that of the first dielectric layer; The second metal layer includes a third conductive region and a fourth conductive region that are not connected to each other, and the gap is located between the third conductive region and the fourth conductive region; A first conductive element has one end connected to the first conductive area and the other end connected to the third conductive area; a second conductive element has one end connected to the second conductive area and the other end connected to the fourth conductive area.

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