Antenna structure and electronic device

Abstract

An antenna structure and an electronic device. The antenna structure comprises a first radiating element, a ground element and a second radiating element; the first radiating element comprises a first radiation part and a ground part; the ground part is connected to the first radiation part and the ground element respectively; the first radiation part, the ground part and the ground element form an enclosed structure; the second radiating element comprises a second radiation part, a third radiation part, a fourth radiation part and a feed-in part connected between the second radiation part, the third radiation part and the fourth radiation part, the feed-in part is connected to a feed-in element, and the second radiation part is located between the first radiation part and the third radiation part; the second radiation part and the first radiation part are separated from each other and coupled to each other, so that the feed-in part, the second radiation part, the first radiation part and the ground part generate first and second operating frequency bands, and the first and second operating frequency bands are different. The antenna structure and the electronic device provided by the application can operate at high / low frequencies, and are suitable for third generation, fourth generation, fifth generation (including Sub-6 frequency band) and LTE full frequency band mobile communication systems.

Description

TECHNICAL FIELD

[0001] The present application relates to an electronic device, and more particularly to an electronic device having an antenna structure covering multiple frequency bands. BACKGROUND

[0002] With the development of mobile communication technology, mobile devices, such as notebook computers, smart phones and other hybrid function portable electronic devices, are increasingly popular. In order to meet people's needs, mobile devices usually have wireless communication functions. Some cover long-distance wireless communication range, such as using 3G, 4G, 5G, LTE (Long Term Evolution) system for communication, and some cover short-distance wireless communication range, such as using Bluetooth, Wi-Fi, NFC (Near Field Communication) system for communication.

[0003] In order to the portability of electronic devices, the appearance size of electronic devices is designed towards miniaturization, so that the space for setting the antenna on the small or portable electronic device is very limited. Therefore, how to design an antenna structure capable of simultaneously receiving and transmitting multiple wireless frequency bands and having good antenna efficiency in the limited space of the electronic device is a very important issue in the field.

[0004] Therefore, it is necessary to provide an antenna structure and an electronic device to solve the above problems. SUMMARY

[0005] The technical problem to be solved by the present application is to provide an electronic device having an antenna structure capable of covering multiple frequency bands in view of the deficiencies of the prior art, so as to maintain good antenna efficiency while designing the electronic device to be small.

[0006] In order to solve the above technical problems, one of the technical solutions adopted by the present application is to provide an antenna structure, which comprises a first radiating element, a grounding element and a second radiating element. The first radiating element comprises a first radiation part and a grounding part, and the first radiation part is connected to one end of the grounding part. The grounding element is connected to the other end of the grounding part, wherein the first radiation part, the grounding part and the grounding element form a surrounding structure. The second radiating element comprises a second radiation part, a third radiation part, a fourth radiation part and a feed-in part connected between the second radiation part, the third radiation part and the fourth radiation part, the feed-in part is connected to a feed-in element, and the second radiation part is located between the first radiation part and the third radiation part. Wherein, the second radiation part and the third radiation part extend away from the grounding part with respect to the feed-in part, the fourth radiation part extends towards the grounding part with respect to the feed-in part, and the surrounding structure is used to surround the fourth radiation part. Wherein, the second radiation part and the first radiation part are separated from each other and coupled to each other, so that the feed-in part, the second radiation part, the first radiation part and the grounding part generate a first operating frequency band and a second operating frequency band, and the first operating frequency band and the second operating frequency band are different.​

[0007] To solve the above technical problems, another technical solution of the present application provides an electronic device, which comprises an antenna structure and a housing. The antenna structure comprises a first radiating element, a grounding element and a second radiating element. The first radiating element comprises a first radiation part and a grounding part, and the first radiation part is connected to one end of the grounding part. The grounding element is connected to the other end of the grounding part, wherein the first radiation part, the grounding part and the grounding element form an enclosing structure. The second radiating element comprises a second radiation part, a third radiation part, a fourth radiation part and a feeding part connected between the second radiation part, the third radiation part and the fourth radiation part, and the feeding part is connected to a feeding element. The second radiation part is located between the first radiation part and the third radiation part, wherein the second radiation part and the third radiation part extend away from the grounding part with respect to the feeding part, the fourth radiation part extends toward the grounding part with respect to the feeding part, and the enclosing structure is used to enclose the fourth radiation part. The second radiation part and the first radiation part are separated from each other and coupled to each other, so that the feeding part, the second radiation part, the first radiation part and the grounding part generate a first operating frequency band and a second operating frequency band, and the first operating frequency band and the second operating frequency band are different. The housing is connected to the grounding element.

[0008] One of the beneficial effects of the present application is that the antenna structure and the electronic device provided by the present application can generate a single-path dual-resonance mode by connecting one end of the first radiation part to the grounding part and connecting the other end of the grounding part to the grounding element, so that the first radiation part, the grounding part and the grounding element form an enclosing structure, and then by separating the second radiation part and the first radiation part from each other and coupling them to each other, so that the feeding part, the second radiation part, the first radiation part and the grounding part can generate a single-path dual-resonance mode to cover a low frequency band.

[0009] In order to further understand the features and technical contents of the present application, please refer to the following detailed description of the present application and the accompanying drawings, however, the provided drawings are only used for reference and illustration, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 The schematic diagram of the electronic device of the present application.

[0011] Figure 2 The planar schematic diagram of the antenna structure of the first embodiment of the present application.

[0012] Figure 3 The planar schematic diagram of the antenna structure of the second embodiment of the present application.

[0013] Figure 4 The perspective schematic diagram of the antenna structure of the second embodiment of the present application.

[0014] Figure 5Another perspective view of the antenna structure of the second embodiment of the present application.

[0015] Figure 6 Graph of the voltage standing wave ratio of the antenna structure of the present application.

[0016] Explanation of main component symbols:

[0017] D electronic device

[0018] A antenna structure

[0019] 1 first radiating element

[0020] 11 first radiating portion

[0021] 12 ground portion

[0022] 13 fifth radiating portion

[0023] 131 first branch

[0024] 132 second branch

[0025] 2 second radiating element

[0026] 21 second radiating portion

[0027] 22 third radiating portion

[0028] 221 open end

[0029] 23 fourth radiating portion

[0030] 24 feeding portion

[0031] 25 sixth radiating portion

[0032] 3 ground element

[0033] 31 side

[0034] 4 parasitic radiating element

[0035] F feeding element

[0036] FP feeding point

[0037] F1 feeding end

[0038] F2 ground end

[0039] H1 first coupling gap

[0040] H2 second coupling gap

[0041] B carrier board

[0042] S housing

[0043] X, Y, Z coordinate axes DETAILED DESCRIPTION

[0044] The following embodiments of the present application are disclosed with reference to the specific embodiments of the "antenna structure and electronic device" for the purpose of illustrating the present application. Those skilled in the art will appreciate the advantages and superiorities of the present application based on the disclosures herein. The present application can be implemented or performed in other different embodiments and with various modifications in addition to those described herein and the disclosures herein are intended to cover all such modifications and alterations. In addition, the drawings accompanying the present application are intended to serve as simple illustrative tools for understanding the present application and are not intended to be used in actual dimensions. The following embodiments will be further described in detail with reference to the drawings. However, the present application is not limited to those specific embodiments, but rather the scope of the present application is to be accorded the broadest scope of protection as is allowed by law. In addition, it should be understood that although the terms "first", "second", "third", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are generally only used to distinguish one element from another. In addition, the term "or" as used herein should be understood to mean either one of the associated listed items, or any combination of any two or more of the associated listed items. In addition, the term "connect" as used herein means that two elements are directly or indirectly connected with each other and are in physical contact with each other, and the term "couple" as used herein means that two elements are separated from each other and are not in physical contact with each other, but the electric field energy generated by the current of one element excites the electric field energy of the other element.

[0045] [First Embodiment]

[0046] Referring to Figure 1 As shown in the drawings, the present application provides an electronic device D having a function of transmitting and receiving radio frequency (RF) signals. For example, the electronic device D can be a smart phone, a tablet computer, or a notebook computer, and the present application will be described by taking the electronic device D as a notebook computer, but the present application is not limited thereto. The electronic device D includes an antenna structure A and a housing S (the housing S can include a metal housing portion), the antenna structure A is arranged at a screen frame position of the electronic device D, and the number of the antenna structure A is not limited by the present application (two antenna structures A of the electronic device D are shown in the drawings). The electronic device D can generate at least one operating frequency band through the antenna structure A, but the present application is not limited thereto. Figure 1

[0047] Next, referring to Figure 1 and Figure 2 shown in the drawings,​Figure 2 An antenna structure A according to a first embodiment of the present application is shown. The antenna structure A is disposed on a carrier board B. The antenna structure A includes a first radiating element 1, a second radiating element 2, and a ground element 3 connected to a housing S. The first radiating element 1 includes a first radiating portion 11 and a ground portion 12, wherein one end of the ground portion 12 is connected to the first radiating portion 11 and the other end is connected to the ground element 3, which is connected to a metal housing portion of the housing S. It is worth mentioning that, Figure 2 The first radiating portion 11, the ground portion 12, and the ground element 3 form a surrounding structure, which is substantially in the shape of an inverted C.

[0048] Continuing to refer to Figure 2 The second radiating element 2 includes a second radiating portion 21, a third radiating portion 22, a fourth radiating portion 23, and a feeding portion 24. The feeding portion 24 is connected between the second radiating portion 21, the third radiating portion 22, and the fourth radiating portion 23. The second radiating portion 21 and the third radiating portion 22 extend in a direction away from the ground portion 12 (negative X-axis direction) with respect to the feeding portion 24, and the fourth radiating portion 23 extends in a direction toward the ground portion 12 (positive X-axis direction) with respect to the feeding portion 24. Therefore, Figure 2 It can be seen that the surrounding structure formed by the first radiating portion 11, the ground portion 12, and the ground element 3 surrounds the fourth radiating portion 23, and the second radiating portion 21 and the third radiating portion 22 extend toward the outside of the surrounding structure (or away from the feeding portion 24) with respect to the opening of the surrounding structure, and the fourth radiating portion 23 extends toward the inside of the surrounding structure (or close to the feeding portion 24) with respect to the opening of the surrounding structure. Further, the second radiating portion 21 is located between the first radiating portion 11 and the third radiating portion 22, and the third radiating portion 22 extends in a direction away from the ground portion 12 with respect to the feeding portion 24 and then bends to form a hook-shaped structure, so that an open end 221 of the third radiating portion 22 extends toward the ground portion 12 (positive X-axis direction).

[0049] As mentioned above, the first radiating element 1, the second radiating element 2 and the ground element 3 can be a metal sheet, a microstrip line, a metal wire or other conductive body having a conductive effect, but the present application is not limited thereto. In addition, the second radiating portion 21 and the first radiating portion 11 have a first coupling gap H1 therebetween, preferably, the first coupling gap H1 is between 0.1 mm and 2 mm. The feed-in portion 24 can be connected to a feed-in element F, which can be, for example but not limited to, a coaxial cable. The feed-in element F has a feed-in end F1 and a ground end F2, and the feed-in element F is electrically connected to a feed-in point FP on the feed-in portion 24 through the feed-in end F1, and is electrically connected to the ground element 3 through the ground end F2. In this way, the feed-in portion 24 can be connected to the feed-in element F to feed the feed-in element F to the second radiating element 2, and then the feed-in portion 24, the second radiating element 2, the first radiating element 11 and the ground element 3 form an electrical path through the mutual coupling between the first radiating portion 11 and the second radiating portion 21 separated from each other, and a dual-resonant mode is excited through the electrical path to generate a first operating frequency band and a second operating frequency band, and the first operating frequency band and the second operating frequency band are different.

[0050] Continuing to refer to Figure 2 As shown, the second radiating portion 21 and the third radiating portion 22 have a second coupling gap H2 therebetween, preferably, the second coupling gap H2 is between 0.3 mm and 3 mm. In this way, the second radiating portion 21 and the third radiating portion 22 are coupled to each other to generate a third operating frequency band. The third operating frequency band is higher than the second operating frequency band, and the second operating frequency band is higher than the first operating frequency band. In addition, the second radiating portion 21 can generate a fourth operating frequency band, the fourth radiating portion 23 can generate a fifth operating frequency band, and the fifth operating frequency band is higher than the fourth operating frequency band.

[0051] In addition, it should be noted that, in Figure 2 , the ground element 3 does not cover the first radiating portion 11, the second radiating portion 21 and the third radiating portion 22 of the antenna structure A (that is, the ground element 3 is only arranged on the right side of the feed-in portion 24 adjacent to the fourth radiating portion 23). Therefore, in the present embodiment, the side edge 31 of the ground element 3 close to the feed-in portion 24 is located on the right side of the feed-in portion 24. Figure 2 In the present embodiment, the position of the side edge 31 overlaps the feed-in element F). However, the present application is not limited thereto. In other embodiments, the side edge 31 of the ground element 3 close to the feed-in portion 24 can extend to the left between the feed-in point FP and an open end 221 of the third radiating portion 22, but not beyond the open end 221, so as to avoid the distance between the ground element 3 and the third radiating portion 22 being too close to affect the impedance matching of the antenna structure A. In this way, the first radiating portion 11, the second radiating portion 21 and the third radiating portion 22 can generate a better frequency width and have a good antenna efficiency without being affected by the ground element 3.

[0052] [Second Embodiment]

[0053] See Figure 3 As shown, Figure 3 Antenna structure A according to a second embodiment of the present invention is shown. Figure 3 Antenna structure A has the same Figure 2 The similarities are not elaborated further. Specifically, in this embodiment, the first radiating element 1 of antenna structure A includes, in addition to the first radiating portion 11 and the ground portion 12, a fifth radiating portion 13 connected between the first radiating portion 11 and the ground portion 12. Furthermore, the second radiating element 2 of antenna structure A in this embodiment includes, in addition to the second radiating portion 21, the third radiating portion 22, the fourth radiating portion 23, and the feed portion 24, a sixth radiating portion 25 connected to the feed portion 24. Additionally, antenna structure A in this embodiment further includes a parasitic radiating element 4 connected to the ground portion 3.

[0054] As described above, the fifth radiating section 13 extends along the positive X-axis direction relative to the connection between the first radiating section 11 and the grounding section 12, while the first radiating section 11 extends along the negative X-axis direction relative to the connection between the fifth radiating section 13 and the grounding section 12. Therefore, the extending directions of the fifth radiating section 13 and the first radiating section 11 are opposite. Furthermore, the feed member F can be fed to the fourth radiating section 23 of the second radiating member 2 through the feed member 24, and then coupled to the grounding section 12 and the fifth radiating section 13 of the first radiating member 1 from the fourth radiating section 23. In this way, the fifth radiating section 13 can generate a sixth operating frequency band and a seventh operating frequency band, and the seventh operating frequency band is higher than the sixth operating frequency band. In addition, the fifth radiating section 13 has a first branch 131 and a second branch 132. The first branch 131 extends along a first direction (positive X-axis direction), and the second branch 132 extends along a second direction (negative Y-axis direction). The first direction and the second direction are perpendicular. Therefore, this embodiment can utilize the dual-branch structure of the fifth radiating section 13 to increase the high-frequency bandwidth (i.e., the bandwidth of the sixth and seventh operating bands) of the antenna structure A and improve the antenna gain.

[0055] Continue reading Figure 3 As shown, the sixth radiating section 25 and the parasitic radiating element 4 are generally L-shaped, with the sixth radiating section 25 extending towards the negative X-axis and the parasitic radiating element 4 extending towards the positive X-axis, but this invention is not limited thereto. The sixth radiating section 25 can generate an eighth operating frequency band, and the parasitic radiating element 4 and the fourth radiating section 23 are separated from each other and coupled to each other to generate a ninth operating frequency band, which is lower than the eighth operating frequency band.

[0056] Next, refer to Figure 4 and Figure 5 As shown,Figure 4 With Figure 5 The antenna structure of the second embodiment of the present application is shown in perspective views from different viewing angles. Comparing Figure 3 With Figure 4 , Figure 5 It can be seen that the presentation form of the antenna structure A of the present application is not limited, and can vary according to the form of the carrier plate B on which the antenna structure A is arranged. For example, the carrier plate B is a flat structure, and has a large size, so that the antenna structure A arranged on the carrier plate B can be displayed in a fully unfolded form. For example, Figure 3 With Figure 4 For example, the carrier plate B is a three-dimensional structure, and its surface is not flat and has a small size Figure 5 With Figure 4 The size of the carrier plate B in the Y-axis direction is obviously smaller than Figure 5 The size of the antenna structure A arranged on the carrier plate B (specifically, the size in the Y-axis direction, for example, as shown in Figure 3 The size of the antenna structure A arranged on the carrier plate B (specifically, the size in the Y-axis direction, for example, as shown in Figure 5 The size of the antenna structure A arranged on the carrier plate B (specifically, the size in the Y-axis direction, for example, as shown in

[0057] The antenna structure A of the first embodiment of the present application can generate the first to fifth operating frequency bands, and the antenna structure A of the second embodiment can generate the first to ninth operating frequency bands. Then, referring to Figure 6 The voltage standing wave ratio of the antenna structure of the present application is shown in a graph. Specifically, the frequency range of all the frequency bands included in the present application is (as shown in Figure 6 The voltage standing wave ratio of the antenna structure of the present application is shown in a graph. Specifically, the frequency range of all the frequency bands included in the present application is (as shown in Figure 6 The voltage standing wave ratio of the antenna structure of the present application is shown in a graph. Specifically, the frequency range of all the frequency bands included in the present application is (as shown in

[0058] [Advantages of the embodiments]

[0059] One of the benefits of the present application is that the antenna structure A and the electronic device D can be connected to the ground through one end of the first radiating element 11 and the other end of the ground element 3, so that the first radiating element 11, the ground element 12 and the ground element 3 form a surrounding structure, and the second radiating element 21 and the first radiating element 11 are separated from each other and coupled to each other, so that the feed-in portion 24, the second radiating element 21, the first radiating element 11 and the ground element 12 can generate a single-path dual-resonance mode (first operating frequency band and second operating frequency band), and the second radiating element 21 and the third radiating element 22 are coupled to each other to generate a third operating frequency band, so as to cover the low frequency band.

[0060] Furthermore, the antenna structure A further includes a fifth radiating element 13 added to the first radiating element 1, a sixth radiating element 25 added to the second radiating element 2, and a parasitic radiating element 4 added to the ground element 3, so as to generate a high frequency band capable of covering different operating frequency bands. Thus, the antenna structure A provided by the present application can be used for high / low frequency operation, and is suitable for third generation, fourth generation, fifth generation (including sub-6 frequency band) and LTE full frequency band mobile communication systems.

[0061] The above disclosure is only a preferred embodiment of the present application, and does not limit the scope of the claims of the present application, so any equivalent technical changes made according to the content of the present application and the drawings are included in the scope of the claims of the present application.

Claims

1. An antenna structure comprising: A first radiating element, the first radiating element including a first radiating portion and a grounding portion, the first radiating portion being connected to one end of the grounding portion; A grounding element connected to the other end of the grounding portion, wherein the first radiating portion, the grounding portion, and the grounding element form an enclosing structure; and A second radiating element includes a second radiating portion, a third radiating portion, a fourth radiating portion, and a feed portion connected between the second radiating portion, the third radiating portion, and the fourth radiating portion. The feed portion is connected to a feed member. The second radiating portion is located between the first radiating portion and the third radiating portion. The second radiating portion and the third radiating portion extend away from the grounding portion relative to the feed portion. The fourth radiating portion extends towards the grounding portion relative to the feed portion. The surrounding structure is used to surround the fourth radiating portion. The second radiating part is separate from and coupled to the first radiating part, so that the feed part, the second radiating part, the first radiating part and the ground part generate a first operating frequency band and a second operating frequency band, and the first operating frequency band and the second operating frequency band are different. The second radiating element and the third radiating element are coupled to each other to generate a third operating frequency band, which is higher than the second operating frequency band and the second operating frequency band is higher than the first operating frequency band.

2. The antenna structure as described in claim 1, wherein, The second radiating part and the first radiating part have a first coupling gap, which is between 0.1 mm and 2 mm.

3. The antenna structure as described in claim 2, wherein, The second radiating part and the third radiating part have a second coupling gap, which is between 0.3 mm and 3 mm.

4. The antenna structure as described in claim 1, wherein, The second radiating element is used to generate a fourth operating frequency band, the fourth radiating element is used to generate a fifth operating frequency band, and the fifth operating frequency band is higher than the fourth operating frequency band.

5. The antenna structure as described in claim 4, wherein, The first radiating element further includes a fifth radiating portion connected between the first radiating portion and the grounding portion. The fifth radiating portion has a first branch and a second branch. The first branch extends along a first direction, and the second branch extends along a second direction, with the first direction perpendicular to the second direction. The fifth radiating portion is used to generate a sixth operating frequency band and a seventh operating frequency band. The seventh operating frequency band is higher than the sixth operating frequency band, and the sixth operating frequency band is equal to the fifth operating frequency band.

6. The antenna structure as described in claim 1, wherein, The second radiating element also includes a sixth radiating section connected to the feed section, the sixth radiating section being used to generate an eighth operating frequency band.

7. The antenna structure of claim 6, further comprising a parasitic radiating element connected to the grounding element, wherein the parasitic radiating element and the fourth radiating element are separated from each other and coupled to each other to generate a ninth operating frequency band, wherein the ninth operating frequency band is lower than the eighth operating frequency band.

8. The antenna structure as described in claim 1, wherein, The feeder is connected to a feed point of the feeder section, and the grounding member has a side near the feeder section, which is located between the feed point and an open end of the third radiating section.

9. An electronic device comprising: An antenna structure, comprising: A first radiating element, the first radiating element including a first radiating part and a grounding part, the first radiating part being connected to one end of the grounding part; A grounding element connected to the other end of the grounding portion, the first radiating portion, the grounding portion, and the grounding element forming an enclosing structure; and A second radiating element includes a second radiating portion, a third radiating portion, a fourth radiating portion, and a feed portion connected between the second, third, and fourth radiating portions. The feed portion is connected to the feed element. The second radiating portion is located between the first and third radiating portions. The second and third radiating portions extend relative to the feed portion in a direction away from the grounding portion, and the fourth radiating portion extends relative to the feed portion in a direction toward the grounding portion. An enclosure structure is used to enclose the fourth radiating portion. The second and first radiating portions are separated from and coupled to each other, such that the feed portion, the second radiating portion, the first radiating portion, and the grounding portion generate a first operating frequency band and a second operating frequency band, wherein the first and second operating frequency bands are different. A housing connected to the grounding element; The second radiating element and the third radiating element are coupled to each other to generate a third operating frequency band, which is higher than the second operating frequency band and the second operating frequency band is higher than the first operating frequency band.

10. The electronic device of claim 9, wherein, The second radiating part and the first radiating part have a first coupling gap, which is between 0.1 mm and 2 mm.

11. The electronic device as claimed in claim 9, wherein, The second radiating part and the third radiating part have a second coupling gap, which is between 0.3 mm and 3 mm.

12. The electronic device as claimed in claim 9, wherein, The feeder is connected to a feed point of the feeder portion, and the grounding member has a side near the feeder portion, which is located between the feed point and an open end of the third radiating portion.

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