Antenna module and electronic equipment

Abstract

The utility model relates to the technical field of antenna isolation, in particular to an antenna module and electronic equipment, the antenna module comprises a first part, a second part, an antenna assembly, a first radiator, a first branch knot, a switching part and a second branch knot, and the first part and the second part can be folded and unfolded. The antenna assembly, the first radiator and the first branch knot are respectively connected with the first part. The antenna assembly and the first radiator are respectively arranged on two opposite sides of the first part. The first branch knot is located at one end of the first radiator and is separated from the first radiator. The switching part is used for being electrically connected with the first branch knot so that the working mode of the first branch knot can be changed. And the second branch knot is connected with the second part. According to the invention, the isolation between different antennas can be improved.

Description

Technical Field

[0001] The present application relates to the field of antenna isolation technology, and in particular to an antenna module and an electronic device. Background Art

[0002] An electronic device is a communication device that generally exchanges information with other electronic devices through an antenna.

[0003] In order to achieve communication in different frequency bands, electronic devices generally have multiple antennas, and different antennas can generally operate in one or more frequency bands.

[0004] In the related art, there are a large number of antennas, which makes it easy for interference to occur between different antennas. Utility Model Content

[0005] In view of this, the present application provides an antenna module and an electronic device to improve the isolation between different antennas.

[0006] Specifically, the following technical solutions are included:

[0007] A first aspect of the present application provides an antenna module, the antenna module comprising a first part, a second part, an antenna assembly, a first radiator, a first branch, a switching part, and a second branch, wherein:

[0008] The first portion is foldable and unfoldable with the second portion.

[0009] The antenna assembly, the first radiator and the first branch are respectively connected to the first part.

[0010] The antenna assembly and the first radiator are respectively located on two opposite sides of the first portion.

[0011] The first branch is located at one end of the first radiator and is separated from the first radiator.

[0012] The switching unit is used to be electrically connected to the first branch so as to be able to change a working mode of the first branch.

[0013] The second branch is connected to the second portion.

[0014] Optionally, the switching portion is located at an end of the first branch close to the first radiator.

[0015] Optionally, the length of the second branch is similar to or equal to the length of the first radiator.

[0016] Optionally, when the first part and the second part are folded, the orthographic projection of the second branch on the projection plane at least partially overlaps with the orthographic projection of the first radiator on the projection plane, and the projection plane is a plane perpendicular to the arrangement direction of the first part and the second part when folded.

[0017] Optionally, the antenna assembly includes a second radiator and a third radiator, and the second radiator and the third radiator are both located on the first part.

[0018] Optionally, the second radiator is connected to the third radiator, the second radiator extends along an extension direction of the first radiator, and the third radiator extends perpendicular to the extension direction of the first radiator toward the side of the first part where the first radiator is located.

[0019] Optionally, the second radiator has a first grounding portion, and the third radiator has a second grounding portion and a feeding portion, and the feeding portion is located between the first grounding portion and the second grounding portion.

[0020] Optionally, the antenna module includes a rotating shaft, and the first part and the second part are respectively connected to the rotating shaft and can rotate around the rotating shaft.

[0021] Optionally, the first part has an interface, and the first branch and the first radiator are both located on a side of the first part where the interface is located.

[0022] A second aspect of the present application provides an electronic device, which includes the antenna module as described in the above technical solution.

[0023] The beneficial effects of the technical solution provided by the embodiment of the present application include at least: arranging the antenna assembly and the first radiator in the first part is conducive to improving the working stability of the two. The antenna assembly and the first radiator are arranged on opposite sides of the first part, which can reduce the interference between the two. The first branch arranged at one end of the first radiator can amplify the first radiator when the first part and the second part are in the unfolded state, which is conducive to improving the antenna efficiency of the first radiator. At the same time, the first radiator can also switch the working mode through the switching part, which is conducive to improving the isolation between the antenna assembly and the first radiator when the first part and the second part are in the folded state. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram of the structure of an antenna module in an expanded state provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the structure of an antenna module provided in an embodiment of the present application when in a folded state;

[0027] Figure 3 A schematic diagram of current when the first part and the second part are unfolded and the first branch is in a 1 / 2 wavelength electric parasitic mode provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of current when the first part and the second part are unfolded and the first branch is in a 1 / 4 wavelength magnetic parasitic mode provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of current flow when the first portion and the second portion are folded and the first branch is in a 1 / 2 wavelength electric parasitic mode provided in an embodiment of the present application;

[0030] Figure 6 A schematic diagram of current when the first part and the second part are folded and the first branch is in a 1 / 4 wavelength magnetic parasitic mode provided in an embodiment of the present application;

[0031] Figure 7 A schematic diagram of impedance change provided in an embodiment of the present application;

[0032] Figure 8 A diagram of the band-stop filter effect provided in an embodiment of the present application;

[0033] Fig. 9 An isolation degree analysis diagram when the first part and the second part are expanded provided in an embodiment of the present application;

[0034] Fig.10 An isolation analysis diagram when the first part and the second part are folded provided in an embodiment of the present application;

[0035] Fig.11 This is a diagram of the overall system efficiency of the antenna module provided in an embodiment of the present application.

[0036] The reference numerals in the figures represent respectively:

[0037] 1. Part I;

[0038] 2. Part II;

[0039] 3. Antenna assembly; 31. Second radiator; 311. First grounding portion; 32. Third radiator; 321. Second grounding portion; 322. Feeding portion;

[0040] 4. The first radiator;

[0041] 5. The first branch;

[0042] 6. Switching unit;

[0043] 7. The second branch;

[0044] 8. Rotating shaft;

[0045] 9. Interface.

[0046] 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

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0049] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0050] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0051] The first aspect of the present application provides an antenna module, such as Figure 1 and Figure 2 As shown, the antenna module includes a first part 1, a second part 2, an antenna assembly 3, a first radiator 4, a first branch 5, a switching part 6 and a second branch 7, wherein:

[0052] The first part 1 can be folded and unfolded with the second part 2 .

[0053] The antenna assembly 3 , the first radiator 4 and the first branch 5 are respectively connected to the first part 1 .

[0054] The antenna assembly 3 and the first radiator 4 are respectively located on two opposite sides of the first portion 1 .

[0055] The first branch 5 is located at one end of the first radiator 4 and is separated from the first radiator 4 .

[0056] The switch unit 6 is used to be electrically connected to the first branch 5 so as to be able to change the working mode of the first branch 5 .

[0057] The second branch 7 is connected to the second part 2 .

[0058] It can be understood that arranging the antenna assembly 3 and the first radiator 4 in the first part 1 is conducive to improving the working stability of the two. The antenna assembly 3 and the first radiator 4 are arranged on opposite sides of the first part 1, which can reduce the interference between the two. The first branch 5 arranged at one end of the first radiator 4 can amplify the first radiator 4 when the first part 1 and the second part 2 are in the unfolded state, which is conducive to improving the antenna efficiency of the first radiator 4. At the same time, the first radiator 4 can also switch the working mode through the switching part 6, which is conducive to improving the isolation between the antenna assembly 3 and the first radiator 4 when the first part 1 and the second part 2 are in the folded state.

[0059] In the embodiment of the present application, before the switch 6 changes the working mode of the first branch 5, the first branch 5 can maintain the 1 / 2 wavelength electric parasitic mode, and the antenna efficiency of the first radiator 4 in the cellular MHB band can be improved; after the switch 6 forms an electrical connection with the first branch 5, the working mode of the first branch 5 is changed from the 1 / 2 wavelength electric parasitic mode to the 1 / 4 wavelength magnetic parasitic mode. At this time, the first branch 5 has a certain current constraint capability, and a defect-like structure is formed between the first radiator 4 and the antenna component 3 to produce a filtering effect, thereby improving the isolation between the antenna component 3 and the first radiator 4 as a BT (Blue Tooth) antenna.

[0060] In the embodiment of the present application, the suspension of the first branch 5 can improve the MHB efficiency. The improvement effect of the radiation efficiency of the antenna caused by the first branch 5 can cover the entire MHB bandwidth, and at the same time, the switching part 6 is used to create a 1 / 4 magnetic parasitic mode, which improves the isolation between the first radiator 4 and the antenna component 3 by 10dB or more.

[0061] In the embodiment of the present application, when the second part 2 is folded with the first part 1, it will interfere with the first radiator 4 located in the first part 1. Therefore, the second branch 7 is provided on the second part 2, which is conducive to tuning the first radiator 4 and reducing the interference caused by the second part 2 to the first radiator 4.

[0062] In the embodiments of the present application, Figure 3As shown, when the first part 1 and the second part 2 are in the expanded state, the first branch 5 is in the 1 / 2 wavelength parasitic mode, the current of the first branch 5 decreases from the middle position to both ends, and the current of the first radiator 4 gradually increases from one end to the other.

[0063] In the embodiments of the present application, Figure 4 As shown, when the first part 1 and the second part 2 are in the unfolded state, the first branch 5 is in the 1 / 4 wavelength magnetic parasitic mode, the current of the first branch 5 gradually increases from one end to the other end, and the current of the first radiator 4 gradually increases from one end to the other end.

[0064] In the embodiments of the present application, Figure 5 As shown, when the first part 1 and the second part 2 are in the folded state, the first branch 5 is in the 1 / 2 wavelength electric parasitic mode, the current of the first branch 5 decreases from the middle position to both ends, and the current of the first radiator 4 gradually increases from one end to the other end. The current of the second branch 7 gradually increases from one end to the other end.

[0065] In the embodiments of the present application, Figure 6 As shown, when the first part 1 and the second part 2 are in the unfolded state, the first branch 5 is in the 1 / 4 wavelength magnetic parasitic mode, the current of the first branch 5 gradually increases from one end to the other end, and the current of the first radiator 4 gradually increases from one end to the other end. The current of the second branch 7 gradually increases from one end to the other end.

[0066] In the embodiments of the present application, Figure 7 As shown, the impedance of the first branch 5 is large when it is in the 1 / 2 wavelength electric parasitic mode, and it can form resonance near the main resonance to achieve wide frequency efficiency improvement. When the first radiator 4 is used as a BT antenna, the isolation between the antenna and the first radiator 4 is low, so it is necessary to change the working mode of the first branch 5 from the 1 / 2 wavelength electric parasitic mode to the 1 / 4 wavelength magnetic parasitic mode. Among them, the horizontal axis is the ratio of the length of the first branch 5 to the wavelength.

[0067] In the embodiment of the present application, when the first branch 5 is in the 1 / 4 wavelength magnetic parasitic mode, it can be equivalent to the following: Figure 8 The band-stop filtering effect of the LC shown can improve the isolation between the antenna assembly 3 and the first radiator 4 .

[0068] In the embodiment of the present application, the length of the first branch 5 is approximately 1 / 2 wavelength of the MHB center frequency, or a multiple of 1 / 2 wavelength of the target boost frequency. This is beneficial for the first branch 5 to exhibit high impedance near the target frequency to improve the antenna performance in the MHB frequency band.

[0069] In the embodiment of the present application, the antenna assembly 3 and the first radiator 4 may be fed by the same power supply component or by different power supply components.

[0070] In the embodiment of the present application, the switching unit 6 may be a switch.

[0071] In the embodiment of the present application, the length of the first branch 5 is greater than the length of the first radiator 4. Exemplarily, the length of the first branch 5 may be 20 mm, and the length of the first radiator 4 may be 17 mm.

[0072] In the embodiment of the present application, the first part 1 and the second part 2 can be connected to the same screen, and the two can drive the screen to fold when folded, and can drive the screen to unfold when unfolded. The first part 1 and the second part 2 can also be connected to different screens.

[0073] In the embodiment of the present application, the first radiator 4 has a third grounding portion, and the third grounding portion is located at an end of the first radiator 4 close to the first branch 5 .

[0074] In the embodiment of the present application, the antenna assembly 3 can be connected to the first part 1 by bonding to the first part 1 or other methods.

[0075] In the embodiment of the present application, the first radiator 4 can be connected to the first part 1 by bonding or other methods.

[0076] In the embodiment of the present application, the first branch 5 can be connected to the first part 1 by bonding or other methods.

[0077] In the embodiments of the present application, Fig. 9 As shown in FIG. 1 , the first part 1 and the second part 2 have a certain degree of isolation when unfolded. The horizontal axis is the frequency band, and the vertical axis is the isolation. The curve at the bottom of the figure is the isolation of the antenna module in each frequency band. Fig. 9 It can be seen that the isolation in the M8 to M9 frequency band is greater than 35dB.

[0078] In the embodiments of the present application, Fig.10 As shown, the first part 1 and the second part 2 have a certain degree of isolation when folded. The horizontal axis is the frequency band, and the vertical axis is the isolation. The curve at the bottom of the figure is the isolation of the antenna module in each frequency band. Fig.10 It can be seen that the isolation in the M8 to M9 frequency band is greater than 30dB.

[0079] In the embodiment of the present application, the total system efficiency of the antenna module of the present application is as follows: Fig.11As shown. The horizontal axis is the frequency band, the vertical axis is the efficiency, the solid line part is the efficiency of the first radiator 1 and the antenna component 3 at each frequency when the antenna module of the present application is unfolded, and the dotted line part is the efficiency of the first radiator 1 and the antenna component 3 at each frequency when the antenna module of the present application is folded.

[0080] In the embodiment of the present application, the length of the first radiator 4 may be 15, 16, 17, 18, 19, 20 or 21 mm, or other values ​​between 15 and 21 mm.

[0081] In some of the embodiments of this application, Figure 1 As shown, the switching portion 6 is located at an end of the first branch 5 close to the first radiator 4 .

[0082] It can be understood that such a configuration is conducive to the switching unit 6 converting the mode of the first branch 5. The switching unit 6 can convert the first branch 5 from a 1 / 2 wavelength electric parasitic mode to a 1 / 4 wavelength magnetic parasitic mode by forming an electrical connection with the first branch 5, thereby improving the isolation between the antenna component 3 and the first radiator 4.

[0083] In some embodiments of the present application, the length of the second branch 7 is similar to the length of the first radiator 4 .

[0084] It is understandable that such a configuration is conducive to the first radiator 4 to work effectively at a specific frequency. The second branch 7, which is similar to or equal to the length of the first radiator 4, can provide good impedance matching. This can reduce the standing wave ratio, thereby improving the energy transmission efficiency and the gain of the antenna.

[0085] In the embodiment of the present application, the difference between the length of the second branch 7 and the length of the first radiator 4 does not exceed 2.5% of the length of the first radiator 4 .

[0086] In the embodiment of the present application, the length of the second branch 7 is equal to the length of the first radiator 4 .

[0087] Exemplarily, the length of the second branch 7 may be 17 mm, and the length of the first radiator 4 may be 17 mm.

[0088] In some of the embodiments of this application, Figure 2 As shown, when the first part 1 and the second part 2 are folded, the orthographic projection of the second branch 7 on the projection plane at least partially overlaps with the orthographic projection of the first radiator 4 on the projection plane, and the projection plane is a plane perpendicular to the arrangement direction of the first part 1 and the second part 2 when folded.

[0089] It can be understood that the overlap formed during folding is beneficial to improving the tuning effect of the second branch 7 on the first radiator 4 and reducing the interference of the second part 2 on the first radiator 4 .

[0090] In the embodiment of the present application, when the first part 1 and the second part 2 are folded, the orthographic projection of the second branch 7 on the projection plane completely overlaps with the orthographic projection of the first radiator 4 on the projection plane.

[0091] In the embodiment of the present application, when the first portion 1 and the second portion 2 are folded, the second branch 7 is parallel to the first radiator 4 .

[0092] In some of the embodiments of this application, Figure 1 As shown, the antenna assembly 3 includes a second radiator 31 and a third radiator 32 , and the second radiator 31 and the third radiator 32 are both located on the first part 1 .

[0093] It can be understood that the second radiator 31 and the third radiator 32 are located in the first part 1, which is conducive to improving the stability of the two when radiating signals. After the switching part 6 is electrically connected to the first branch 5, the working mode of the first branch 5 is changed from the 1 / 2 wavelength electric parasitic mode to the 1 / 4 wavelength magnetic parasitic mode. At this time, the first branch 5 has a certain current restraint ability, and a defect-like ground structure is formed between the first radiator 4 and the second radiator 31 and the third radiator 32 to produce a filtering effect, thereby improving the isolation between the second radiator 31 and the first radiator 4, and the third radiator 32 and the first radiator 4.

[0094] In the embodiment of the present application, the antenna form of the second radiator 31 can be an inverted F antenna, and its length can be 15, 16, 17, 18, 19, 20 or 21 mm, or other values ​​between 15 and 21 mm.

[0095] In the embodiment of the present application, the antenna form of the third radiator 32 can be an inverted F antenna, and its length can be 15, 16, 17, 18, 19, 20 or 21 mm, or other values ​​between 15 and 21 mm.

[0096] In some of the embodiments of this application, Figure 1 As shown, the second radiator 31 is connected to the third radiator 32 , the second radiator 31 extends along the extension direction of the first radiator 4 , and the third radiator 32 extends perpendicular to the extension direction of the first radiator 4 toward the side of the first part 1 where the first radiator 4 is located.

[0097] It can be understood that such a configuration is beneficial to the extension of the second radiator 31 and the third radiator 32 along the edge of the first portion 1 and the adaptability of the second radiator 31 and the third radiator 32 .

[0098] In the embodiment of the present application, the second radiator 31 and the third radiator 32 form an angle of 90°.

[0099] In some of the embodiments of this application, Figure 1 As shown, the second radiator 31 has a first ground portion 311 , and the third radiator 32 has a second ground portion 321 and a feeding portion 322 , and the feeding portion 322 is located between the first ground portion 311 and the second ground portion 321 .

[0100] It is understandable that the feeding portion 322 is located between the first ground portion 311 and the second ground portion 321 and can feed the second radiator 31 and the third radiator 32 at the same time, which is beneficial for the second radiator 31 and the third radiator 32 to work and generate current to radiate signals outward.

[0101] In some of the embodiments of this application, Figure 1 As shown, the antenna module includes a rotating shaft 8 , and the first part 1 and the second part 2 are respectively connected to the rotating shaft 8 and can rotate around the rotating shaft 8 .

[0102] It can be understood that the rotating shaft 8 provides conditions for the rotation of the first part 1 and the second part 2, which is conducive to the first part 1 and the second part 2 to move closer to and away from each other through rotation. When the first part 1 is close to the first part 1, the two can be folded; when the first part 1 is away from the second part 2, the two can be unfolded.

[0103] In the embodiment of the present application, when the first part 1 rotates and approaches the second part 2, it can also drive the second part 2 to approach it; when the first part 1 rotates and moves away from the second part 2, it can also drive the second part 2 to move away from it.

[0104] In some of the embodiments of this application, Figure 1 As shown, the first part 1 has an interface 9 , and the first branch 5 and the first radiator 4 are both located on the side of the first part 1 where the interface 9 is located.

[0105] It is understandable that the first branch 5 and the first radiator 4 located on the side where the interface 9 is located can be at a greater distance from the antenna assembly 3 , which is beneficial to reducing the interference of the first radiator 4 on the antenna assembly 3 .

[0106] A second aspect of the present application provides an electronic device, which includes the antenna module as described in the above embodiment.

[0107] It can be understood that, due to the adoption of the antenna module of the above embodiment, the electronic device of the present application has the same technical effect as the above embodiment, which will not be repeated here.

[0108] In the embodiment of the present application, the electronic device may be a smart phone, a tablet computer or other device.

[0109] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0110] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0111] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An antenna module, characterized in that: The antenna module comprises a first part (1), a second part (2), an antenna assembly (3), a first radiator (4), a first branch (5), a switching part (6) and a second branch (7), wherein: The first part (1) can be folded and unfolded with the second part (2); The antenna assembly (3), the first radiator (4) and the first branch (5) are respectively connected to the first part (1); The antenna assembly (3) and the first radiator (4) are respectively located on two opposite sides of the first part (1); The first branch (5) is located at one end of the first radiator (4) and is separated from the first radiator (4); The switching part (6) is used to be electrically connected to the first branch node (5) so as to be able to change the working mode of the first branch node (5); The second branch (7) is connected to the second part (2).

2. The antenna module according to claim 1, characterized in that: The switching portion (6) is located at an end of the first branch (5) close to the first radiator (4).

3. The antenna module according to claim 1, characterized in that: The length of the second branch (7) is similar to or equal to the length of the first radiator (4).

4. The antenna module according to claim 3, characterized in that: When the first part (1) and the second part (2) are folded, the orthographic projection of the second branch (7) on the projection plane at least partially overlaps with the orthographic projection of the first radiator (4) on the projection plane, and the projection plane is a plane perpendicular to the arrangement direction of the first part (1) and the second part (2) when folded.

5. The antenna module according to claim 1, characterized in that: The antenna assembly (3) comprises a second radiator (31) and a third radiator (32), wherein the second radiator (31) and the third radiator (32) are both located on the first part (1).

6. The antenna module according to claim 5, characterized in that: The second radiator (31) is connected to the third radiator (32); the second radiator (31) extends along the extension direction of the first radiator (4); and the third radiator (32) extends perpendicular to the extension direction of the first radiator (4) toward the side of the first part (1) where the first radiator (4) is located.

7. The antenna module according to claim 6, characterized in that: The second radiator (31) has a first grounding portion (311), and the third radiator (32) has a second grounding portion (321) and a feeding portion (322), wherein the feeding portion (322) is located between the first grounding portion (311) and the second grounding portion (321).

8. The antenna module according to claim 1, characterized in that: The antenna module comprises a rotating shaft (8), and the first part (1) and the second part (2) are respectively connected to the rotating shaft (8) and are capable of rotating around the rotating shaft (8).

9. The antenna module according to claim 1, characterized in that: The first part (1) has an interface (9), and the first branch (5) and the first radiator (4) are both located on the side of the first part (1) where the interface (9) is located.

10. An electronic device, characterized in that: The electronic device comprises the antenna module according to any one of claims 1 to 9.

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