An electronic device

Abstract

An embodiment of the present invention discloses an electronic device comprising: a dielectric substrate on which at least two antenna units are spaced apart; and a plastic housing provided with metal isolation branches, the plastic housing being spaced apart from the dielectric substrate, the metal isolation branches being located perpendicular to the direction of the antenna units relative to the plastic housing. This embodiment of the present invention implements the placement of the metal isolation branches on the plastic housing to couple electromagnetic waves between the antenna units to the metal isolation branches. This avoids the problem of increasing the area of the dielectric substrate caused by placing isolation measures on the dielectric substrate, thereby reducing the area of the dielectric substrate and miniaturizing the antenna assembly, which facilitates the internal space layout of the electronic device.

Description

Technical Field

[0001] The present invention relates to the technical field of antennas, and in particular to an electronic device. Background Art

[0002] With the advent of the 5G communication era, the number of antennas in electronic devices has increased dramatically. Multiple antennas need to be set on the dielectric substrate that carries the antenna to achieve full-band signal coverage, making the radiation frequency of the antenna in the electronic device lower.

[0003] The lower the antenna frequency, the longer the antenna. This shortens the distance between antennas on a dielectric substrate of fixed area. To prevent interference between antennas, isolation measures are required to prevent interference and ensure antenna radiation performance. Traditional antenna isolation technology achieves signal isolation between antennas in the following ways: First, diversity technology is used. This technology places antenna elements orthogonally on a dielectric substrate, so that their polarization directions are orthogonal to achieve isolation. Second, a defective ground structure (DGS) is used. This technology etches periodic or non-periodic groove structures on the metal floor of the dielectric substrate to change the surface current distribution, achieving band-stop and slow-wave characteristics, thereby improving isolation. Third, floor branches or parasitic elements are placed on the dielectric substrate. These floor branches or parasitic elements introduce new coupling paths that offset the original coupling, thereby improving isolation between antennas.

[0004] In summary, traditional isolation technologies all require loading related isolation structures on a dielectric substrate, which increases the area of the dielectric substrate and requires a larger internal space of the electronic device for antenna installation, which is not conducive to the design of the electronic device. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide an electronic device to solve the problem that the conventional isolation technology between antennas causes an increase in the area of a dielectric substrate, which is detrimental to the design of the electronic device.

[0006] To achieve this purpose, the embodiment of the present invention adopts the following technical solutions:

[0007] An electronic device is provided, comprising:

[0008] a dielectric substrate, on which at least two antenna units are spaced apart;

[0009] A plastic shell is provided with a metal isolation branch, the plastic shell is spaced apart from the dielectric substrate, and the metal isolation branch is located in a direction in which the antenna unit is perpendicular to the plastic shell, thereby loading the metal isolation branch that plays an isolating role on the plastic shell, and coupling electromagnetic waves between the antenna units to the metal isolation branch, thereby avoiding the problem of increasing the area of the dielectric substrate due to the isolation measures being loaded on the dielectric substrate. The area of the dielectric substrate can be reduced, so that the antenna assembly can be miniaturized, which is beneficial to the internal space setting of the electronic device.

[0010] Optionally, the metal isolation branch is located on a side of the plastic housing facing the dielectric substrate.

[0011] Optionally, the metal isolation branch is located on the side of the plastic housing facing away from the dielectric substrate. The metal isolation branch can be set on the side of the plastic housing facing toward or away from the dielectric substrate, and the metal isolation branch can be flexibly set according to the appearance requirements of the electronic device.

[0012] Optionally, in a direction perpendicular to the dielectric substrate, the distance between the metal isolation branch and the antenna unit is 6.5 mm, so that the metal isolation branch effectively isolates the two antenna units, thereby improving the isolation between the two antenna units.

[0013] Optionally, the metal isolation branch is integrally formed with the plastic housing, thereby reducing the assembly process of the entire electronic device and lowering the manufacturing cost.

[0014] Optionally, the metal isolation branch is detachably connected to the plastic housing, which facilitates debugging and testing of isolation and replacement of the metal isolation branch.

[0015] Optionally, the metal isolation branch is pasted on the plastic shell, and the pasting method has low cost.

[0016] Optionally, the radiation frequency bands of the at least two antenna units overlap or partially overlap. Under the isolation effect of the metal isolation branch, the two antenna units radiate signals of the same frequency band without affecting each other, and can radiate signals of the same frequency band respectively.

[0017] Optionally, the antenna unit includes a first antenna unit, and the first antenna unit includes a first ground plane, a first feeding point and a first radiation unit;

[0018] The first ground plane is provided with a first antenna grounding point, the first radiating unit includes a positive L-shaped branch, an inverted L-shaped branch and a first inverted U-shaped branch, one end of the positive L-shaped branch and one end of the inverted L-shaped branch are both connected to the first feeding point, the two branches connected to the first feeding point are perpendicular, the first inverted U-shaped branch includes a first side branch, a second side branch and a first bottom branch connecting the first side branch and the second side branch, the U-shaped opening of the first inverted U-shaped branch faces the first ground plane, and the opening of the first inverted U-shaped branch covers the positive L-shaped branch and the inverted L-shaped branch.

[0019] Optionally, the antenna unit further includes a second antenna unit, wherein the second antenna unit includes a second ground plane, a second feeding point and a second radiation unit;

[0020] The second ground plane is provided with a second antenna grounding point, and a first branch and a second branch arranged in parallel and spaced apart, the first branch and the second branch are vertically connected to the second ground plane, the second radiation unit includes an I-shaped branch and a second inverted U-shaped branch, the I-shaped branch is located between the first branch and the second branch, the I-shaped branch is perpendicular to the second ground plane and one end is connected to the second feeding point, the second inverted U-shaped branch includes a third side branch, a fourth side branch and a second bottom branch connecting the third side branch and the fourth side branch, the U-shaped opening of the second inverted U-shaped branch faces the second ground plane, and the opening of the second inverted U-shaped branch covers the I-shaped branch.

[0021] Optionally, the metal isolation branch includes a regular U-shaped branch and a parasitic branch, the regular U-shaped branch includes a fifth side branch, a sixth side branch, and a third bottom side branch connecting the fifth side branch and the sixth side branch, the regular U-shaped opening of the regular U-shaped branch is opposite to the inverted U-shaped opening of the first inverted U-shaped branch, the fifth side branch is close to the first antenna unit, the sixth side branch is close to the second antenna unit, the fifth side branch is aligned with the inner edge of the first side branch of the first inverted U-shaped branch, the sixth side branch is aligned with the outer edge of the third side branch of the second inverted U-shaped branch, the parasitic branch includes an extension branch extending from the sixth side branch to the second ground plane and an L-shaped branch connected to the extension branch, one side of the L-shaped branch is aligned with the third side branch, and the other side is connected to the extension branch. The first antenna unit and the second antenna unit of the embodiment of the present invention can cover the channel frequency bands of 3G, 4G and 5G full network communication.

[0022] An electronic device according to an embodiment of the present invention includes a dielectric substrate and a plastic housing, wherein at least two antenna units are arranged at intervals on the dielectric substrate, and the plastic housing is provided with metal isolation branches. The plastic housing and the dielectric substrate are arranged at intervals, and the metal isolation branches are located in a direction perpendicular to the plastic housing. This achieves the goal of loading the metal isolation branches that play an isolation role on the plastic housing, and coupling electromagnetic waves between the antenna units to the metal isolation branches, thereby avoiding the problem of increasing the area of the dielectric substrate due to the isolation measures being loaded on the dielectric substrate. The area of the dielectric substrate can be reduced, so that the antenna assembly can be miniaturized, which is beneficial to the internal space setting of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the dielectric substrate and plastic housing of the electronic device in an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of a top view of the assembly of a dielectric substrate and a plastic housing in an electronic device according to an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the distance between the dielectric substrate and the plastic housing in an embodiment of the present invention;

[0027] Figure 4 is a schematic top view of a dielectric substrate according to an embodiment of the present invention;

[0028] Figure 5 is a schematic top view of a plastic housing according to an embodiment of the present invention;

[0029] Figure 6 for Figure 2 A magnified schematic diagram of part A in the middle;

[0030] In the picture:

[0031] 1. Dielectric substrate; 2. Plastic housing; 11. First antenna unit; 12. Second antenna unit; 110. First ground plane; 1101. First antenna grounding point; 111. First feeding point; 112. Positive L-shaped branch; 113. Inverted L-shaped branch; 115. First inverted U-shaped branch; 1151. First side branch; 1152. First bottom branch; 1153. Second side branch; 120. Second ground plane; 1201. Second Line grounding point; 1202, first branch; 1203, second branch; 121, second feeding point; 122, I-shaped branch; 123, second inverted U-shaped branch; 1231, third side branch; 1232, second bottom branch; 1233, fourth side branch; 21, metal isolation branch; 211, fifth side branch; 212, sixth side branch; 213, third bottom branch; 214, extension branch; 215, L-shaped branch. DETAILED DESCRIPTION

[0032] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0033] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] like Figure 1-Figure 3As shown, an electronic device according to an embodiment of the present invention includes a dielectric substrate 1 and a plastic housing 2 .

[0036] In which, the dielectric substrate 1 can be a PCB board of the antenna assembly, and at least two antenna units are arranged at intervals on the dielectric substrate 1. The antenna unit can be a unit that radiates electromagnetic waves. The antenna unit can be a metal sheet with a set shape printed on the surface of the dielectric substrate 1, for example, it can be a copper sheet of various shapes printed on the surface of the dielectric substrate 1. In which, the antenna unit can be electrically connected to the RF chip through a transmission line, such as realizing the electrical connection between the antenna unit and the RF chip through a transmission line printed on the dielectric substrate 1.

[0037] Optionally, the number of antenna units may be two, such as Figure 1 As shown, a first antenna unit 11 and a second antenna unit 12 are spaced apart on a dielectric substrate 1. The radiation frequency bands of the first antenna unit 11 and the second antenna unit 12 may overlap or partially overlap. In one example, the radiation frequency bands of the first antenna unit 11 and the second antenna unit 12 may both be 1.7 GHz to 2.7 GHz and 3.3 GHz to 5 GHz, which can meet the B1, B2, B3, B4, B7, B34, B38, B39, B40, B41, B42, B43, N41, N77, N78, and N79 channel frequency bands required for 3G, 4G, and 5G full network communication. Of course, the number of antenna units is not limited to two, and the frequency bands are not limited to the above-mentioned frequency bands. The embodiments of the present invention do not limit the number of antenna units or the radiation frequency bands of the antenna units.

[0038] In the embodiment of the present invention, the plastic housing 2 can be an outer shell of an electronic device, a shell of other components inside the electronic device, or a shell of an antenna assembly. The plastic housing 2 is provided with a metal isolation branch 21. The plastic housing 2 is spaced apart from the dielectric substrate 1 so that the metal isolation branch 21 is located in a direction perpendicular to the direction of the antenna units (11, 12) relative to the plastic housing 2. The electromagnetic waves that would otherwise be coupled to another antenna unit during operation of one antenna unit can be coupled to the metal isolation branch of the plastic housing 2 through the metal isolation branch 21, thereby not affecting the other antenna unit and improving the isolation between the antennas.

[0039] An electronic device according to an embodiment of the present invention includes a dielectric substrate and a plastic housing, wherein at least two antenna units are arranged at intervals on the dielectric substrate, and the plastic housing is provided with metal isolation branches. The plastic housing and the dielectric substrate are arranged at intervals, and the metal isolation branches are located in a direction perpendicular to the plastic housing. This achieves the goal of loading the metal isolation branches that play an isolation role on the plastic housing, and coupling electromagnetic waves between the antenna units to the metal isolation branches, thereby avoiding the problem of increasing the area of the dielectric substrate due to the isolation measures being loaded on the dielectric substrate. The area of the dielectric substrate can be reduced, so that the antenna assembly can be miniaturized, which is beneficial to the internal space setting of the electronic device.

[0040] In an optional embodiment of the present invention, the metal isolation branch 21 and the plastic shell 2 can be integrally formed, such as the metal isolation branch 21 is formed integrally with the plastic shell 2 through injection molding as an insert. In another optional embodiment, the metal isolation branch 21 can also be detachably connected to the plastic shell 2, such as the metal isolation branch 21 and the plastic shell 2 are bonded by glue, and the metal isolation branch 21 can also be set on the plastic shell 2 by screws, clamping, etc. The embodiment of the present invention does not limit the connection method between the metal isolation branch 21 and the plastic shell 2.

[0041] In an optional embodiment of the present invention, the metal isolation branch 21 is located on the side of the plastic shell 2 facing the dielectric substrate 1. Of course, the metal isolation branch 21 can also be located on the side of the plastic shell 2 facing away from the dielectric substrate 1. Those skilled in the art can set the metal isolation branch 21 to be located on the side of the plastic shell 2 facing or facing away from the dielectric substrate 1 according to actual needs. The embodiment of the present invention is not limited to this.

[0042] like Figure 3 As shown, in a preferred embodiment of the present invention, in a direction A perpendicular to the dielectric substrate 1, the distance from the metal isolation branch 21 to the antenna unit (11, 12) is 6.5 mm.

[0043] In order to enable those skilled in the art to more clearly understand the design for improving antenna isolation in the electronic device according to the embodiment of the present invention, the antenna isolation design according to the embodiment of the present invention is described below by assuming that the dielectric substrate 1 is provided with two antenna units.

[0044] like Figure 1 、 Figure 2 and Figure 4 As shown, the antenna unit on the dielectric substrate 1 of the embodiment of the present invention includes a first antenna unit 11 and a second antenna unit 12, and the first antenna unit 11 and the second antenna unit 12 are arranged at intervals.

[0045] like Figure 4As shown, the first antenna unit 11 includes a first ground plane 110, a first feeding point 111 and a first radiation unit, wherein the first ground plane 110 is provided with a first antenna grounding point 1101, and the first antenna unit 11 can be connected to the first antenna grounding point 1101 to achieve grounding.

[0046] The first radiation unit includes a positive L-shaped branch 112, an inverted L-shaped branch 113 and a first inverted U-shaped branch 115. One end of the positive L-shaped branch 112 and one end of the inverted L-shaped branch 113 are both connected to the first feeding point 111. The two branches connected to the first feeding point 111 are perpendicular. The first inverted U-shaped branch 115 includes a first side branch 1151, a second side branch 1153 and a first bottom branch 1152 connecting the first side branch 1151 and the second side branch 1153. The U-shaped opening of the first inverted U-shaped branch 115 faces the first ground plane 110, and the opening of the first inverted U-shaped branch 115 covers the positive L-shaped branch 112 and the inverted L-shaped branch 113.

[0047] The second antenna unit 12 includes a second ground plane 120, a second feeding point 121 and a second radiating unit, wherein the second ground plane 120 is provided with a second antenna grounding point 1201, and a first branch 1202 and a second branch 1203 arranged in parallel and spaced apart, the first branch 1202 and the second branch 1203 are perpendicular to the second ground plane 120, and the second radiating unit includes an I-shaped branch 122 and a second inverted U-shaped branch 123, the I-shaped branch 122 is located between the first branch 1202 and the second branch 1203, the I-shaped branch 122 is perpendicular to the second ground plane 120 and one end is connected to the second feeding point 121, the second inverted U-shaped branch 123 includes a third side branch 1231 and a fourth side branch 1233 arranged in parallel and spaced apart, and a second bottom branch 1232 connecting the third side branch 1231 and the fourth side branch 1233, the U-shaped opening of the second inverted U-shaped branch 123 faces the second ground plane 120, and the opening of the second inverted U-shaped branch 123 covers the I-shaped branch 122.

[0048] like Figure 2 、 Figure 4 、 Figure 5 and Figure 6As shown, the metal isolation branch 21 includes a positive U-shaped branch and a parasitic branch. The positive U-shaped branch includes a fifth side branch 211 and a sixth side branch 212 arranged in parallel and spaced apart, and a third bottom side branch 213 connecting the fifth side branch 211 and the sixth side branch 212. The positive U-shaped opening of the positive U-shaped branch is opposite to the inverted U-shaped opening of the first inverted U-shaped branch 115. The fifth side branch 211 is close to the first antenna unit 11, the sixth side branch 212 is close to the second antenna unit 12, and the fifth The side branch 211 is aligned with the inner edge of the first side branch 1151 of the first inverted U-shaped branch 115, and the sixth side branch 212 is aligned with the outer edge of the third side branch 1231 of the second inverted U-shaped branch 123. The parasitic branch includes an extension branch 214 extending from the sixth side branch 212 toward the second ground plane 120 and an L-shaped branch 215 connected to the extension branch 214. One side of the L-shaped branch 215 is aligned with the third side branch 1231, and the other side is connected to the extension branch 214.

[0049] Of course, although the above examples illustrate the structure of the first antenna unit 11, the second antenna unit 12 and the metal isolation branch 21, as well as the positional relationship between the metal isolation branch 21 and the first antenna unit 11 and the second antenna unit 12, in actual applications, those skilled in the art can set antenna units and metal isolation branches of different structures according to actual needs, and adjust the positional relationship between the metal isolation branch and the antenna unit according to the isolation requirements. The embodiments of the present invention are not limited to this.

[0050] In this specification, reference to terms such as "one embodiment" or "example" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0051] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the purpose of clarifying the device. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0052] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.

Claims

1. An electronic device, characterized in that: include: a dielectric substrate, on which at least two antenna units are spaced apart; A plastic housing, wherein the plastic housing is provided with a metal isolation branch, the plastic housing is spaced apart from the dielectric substrate, and the metal isolation branch is located in a direction perpendicular to the plastic housing of the antenna unit; The antenna unit comprises a first antenna unit, wherein the first antenna unit comprises a first ground plane, a first feeding point and a first radiating element; The first ground plane is provided with a first antenna grounding point, the first radiating unit includes a positive L-shaped branch, an inverted L-shaped branch and a first inverted U-shaped branch, one end of the positive L-shaped branch and one end of the inverted L-shaped branch are both connected to the first feeding point, the two branches connected to the first feeding point are perpendicular, the first inverted U-shaped branch includes a first side branch, a second side branch and a first bottom branch connecting the first side branch and the second side branch, the U-shaped opening of the first inverted U-shaped branch faces the first ground plane, and the opening of the first inverted U-shaped branch covers the positive L-shaped branch and the inverted L-shaped branch.

2. The electronic device according to claim 1, wherein The metal isolation branch is located on a side of the plastic shell facing the dielectric substrate.

3. The electronic device according to claim 1, wherein The metal isolation branch is located on a side of the plastic shell facing away from the dielectric substrate.

4. The electronic device according to claim 1, wherein: In a direction perpendicular to the dielectric substrate, the distance from the metal isolation branch to the antenna unit is 6.5 mm.

5. The electronic device according to claim 1, wherein The metal isolation branch and the plastic shell are integrally formed.

6. The electronic device according to claim 1, wherein: The metal isolation branch is detachably connected to the plastic shell.

7. The electronic device according to claim 1, wherein: The metal isolation branch is adhered to the plastic shell.

8. The electronic device according to claim 1, wherein: The radiation frequency bands of the at least two antenna units overlap or partially overlap.

9. The electronic device according to any one of claims 1 to 8, characterized in that: The antenna unit further includes a second antenna unit, wherein the second antenna unit includes a second ground plane, a second feeding point and a second radiating element; The second ground plane is provided with a second antenna grounding point, and a first branch and a second branch arranged in parallel and spaced apart, the first branch and the second branch are vertically connected to the second ground plane, the second radiation unit includes an I-shaped branch and a second inverted U-shaped branch, the I-shaped branch is located between the first branch and the second branch, the I-shaped branch is perpendicular to the second ground plane and one end is connected to the second feeding point, the second inverted U-shaped branch includes a third side branch, a fourth side branch and a second bottom branch connecting the third side branch and the fourth side branch, the U-shaped opening of the second inverted U-shaped branch faces the second ground plane, and the opening of the second inverted U-shaped branch covers the I-shaped branch.

10. The electronic device according to claim 9, characterized in that The metal isolation branch includes a regular U-shaped branch and a parasitic branch. The regular U-shaped branch includes a fifth side branch, a sixth side branch, and a third bottom side branch connecting the fifth side branch and the sixth side branch, which are arranged in parallel and spaced apart. The regular U-shaped opening of the regular U-shaped branch is opposite to the inverted U-shaped opening of the first inverted U-shaped branch. The fifth side branch is close to the first antenna unit, and the sixth side branch is close to the second antenna unit. The fifth side branch is aligned with the inner edge of the first side branch of the first inverted U-shaped branch, and the sixth side branch is aligned with the outer edge of the third side branch of the second inverted U-shaped branch. The parasitic branch includes an extension branch extending from the sixth side branch to the second ground plane and an L-shaped branch connected to the extension branch. One side of the L-shaped branch is aligned with the third side branch, and the other side is connected to the extension branch.

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