Antenna structure and mobile terminal

Abstract

The present disclosure relates to an antenna structure and a mobile terminal. The antenna structure includes a first antenna and a second antenna, the first antenna being used to radiate signals in a first frequency band, and the second antenna being used to radiate signals in a second frequency band, the frequency of the second frequency band being higher than the frequency of the first frequency band, and the second antenna being stacked above the first antenna. In the technical solution provided in the embodiments of the present disclosure, stacking the second antenna on the first antenna improves antenna space utilization, reduces antenna costs, achieves antenna high integration, and provides more flexible antenna layout. It also increases the usable space for other hardware in the mobile terminal, which is convenient for optimizing the overall performance of the mobile terminal system.

Description

[Technical field]

[0001] TECHNICAL FIELD The embodiments of the present disclosure relate to the field of antenna technology, and in particular to an antenna structure and a mobile terminal. [Background technology]

[0002] With the development of communication technology, the era of 5G (fifth generation mobile communication technology) communication has arrived.

[0003] In order to meet the requirements of 5G communication and achieve compatibility with frequency bands such as 4G, 3G, and 2G, it is necessary to increase the number of antennas in mobile terminals. However, as users' demands for slimmer mobile terminals remain unchanged, the internal space of mobile terminals is limited, making antenna design difficult.

[0004] Currently, the spatial utilization of antennas in mobile terminals is low. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present disclosure provide an antenna structure and a mobile terminal which are used to solve the technical problem of low space utilization rate of an antenna in a mobile terminal in the related art. [Means for solving the problem]

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided an antenna structure including a first antenna and a second antenna,

[0007] the first antenna is adapted to radiate signals in a first frequency band;

[0008] the second antenna is used to radiate signals in a second frequency band, the frequencies of the second frequency band being higher than the frequencies of the first frequency band;

[0009] The second antenna is stacked above the first antenna.

[0010] Optionally, the area of ​​the second antenna is smaller than the area of ​​the first antenna.

[0011] Optionally, the projection of the second antenna on the plane in which the first antenna lies is located in an edge region of the first antenna.

[0012] Optionally, a first support structure is disposed between the second antenna and the first antenna.

[0013] Optionally, the antenna structure further includes a third antenna for radiating signals in a third frequency band, the frequencies of the third frequency band being higher than the frequencies of the second frequency band;

[0014] The third antenna is stacked above the second antenna.

[0015] Optionally, the area of ​​the third antenna is smaller than the area of ​​the second antenna.

[0016] Optionally, the projection of the third antenna on a plane in which the second antenna lies is located in an edge region of the second antenna.

[0017] Optionally, a second support structure is disposed between the third antenna and the second antenna.

[0018] Optionally, the antenna structure further includes a third antenna for radiating signals in a third frequency band, the frequencies of the third frequency band being higher than the frequencies of the first frequency band;

[0019] The third antenna is stacked above the first antenna, and the third antenna and the second antenna are disposed at different positions above the first antenna.

[0020] According to a second aspect of an embodiment of the present disclosure, there is provided a mobile terminal including an antenna structure according to the first aspect. Effect of the Invention

[0021] According to the technical solutions provided by the embodiments of the present disclosure, the following technical effects can be achieved.

[0022] By stacking the second antenna on the first antenna, the space utilization rate of the antenna is improved, the cost of the antenna is reduced, the integration of the antenna is increased, the layout of the antenna is made more flexible, and the space available for other hardware of the mobile terminal is increased, which is convenient for optimizing the performance of the entire mobile terminal system.

[0023] It is to be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the present disclosure. [Brief description of the drawings]

[0024] The drawings herein, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure. [Figure 1] FIG. 2 is a schematic diagram of an antenna structure provided in one exemplary embodiment of the present disclosure. [Diagram 2] FIG. 2 is a schematic diagram of an antenna structure provided in another exemplary embodiment of the present disclosure. [Diagram 3] 11 is a plan view showing an example of an antenna structure in which the second antenna and the third antenna are located on different layers. FIG. [Figure 4] FIG. 2 is a schematic diagram of an antenna structure provided in another exemplary embodiment of the present disclosure. [Diagram 5] 10 is a plan view showing an example of an antenna structure in which the second antenna and the third antenna are located in the same layer. FIG. [Figure 6] FIG. 2 is a schematic diagram of a mobile terminal provided in one exemplary embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Exemplary embodiments are described in detail below, examples of which are shown in the drawings. Where the following description refers to the drawings, the same reference numerals in different drawings refer to the same or similar elements unless otherwise specified. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of apparatuses and methods consistent with certain aspects of the present disclosure as set forth in the claims.

[0026] 1 is a schematic diagram of an antenna structure provided in an exemplary embodiment of the present disclosure. As shown in FIG. 1, the antenna structure 10 can include a first antenna 11 and a second antenna 12.

[0027] The first antenna 11 is used to radiate signals in a first frequency band, and the second antenna 12 is used to radiate signals in a second frequency band. In the embodiment of the present disclosure, the first frequency band and the second frequency band are two different frequency bands, where the frequency of the second frequency band is higher than the frequency of the first frequency band. For example, the frequency range of the first frequency band is [a, b], and the frequency range of the second frequency band is [c, d], where the frequency of the second frequency band is higher than the frequency of the first frequency band, refers to c being greater than b, and the above a, b, c, and d are all frequency values, and their units may be Hertz (Hz).

[0028] Optionally, the first frequency band is a non-5G frequency band, which is a frequency range of 2G (second generation mobile communication technology), 3G (third generation mobile communication technology) and 4G (fourth generation mobile communication technology) radio waves, where the frequency range of the 4G frequency band includes three as follows: 1880-1900MHz, 2320-2370MHz and 2575-2635MHz, and the frequencies of the 2G frequency band and the 3G frequency band are lower than the frequencies of the 4G frequency band.

[0029] Alternatively, the second frequency band is a sub-6G frequency band (a frequency band below 6 GHz, also referred to as the FR1 frequency band) in the 5G frequency band, the 5G frequency band being a frequency range of 5G radio waves, and the frequency range of the sub-6G frequency band is 450 MHz to 6000 MHz. Compared with the non-5G frequency band, the 5G frequency band covers a wider frequency range, that is, the 5G frequency band is higher than the non-5G frequency band. The sub-6GHz frequency band is a frequency range of radio waves received or transmitted by a sub-6G antenna. Of course, in some other examples, the second frequency band may be a millimeter wave frequency band in the 5G frequency band, the millimeter wave frequency band being a millimeter wave frequency range, and the frequency range of the millimeter wave frequency band is 24.25 GHz to 52.6 GHz, and the millimeter wave frequency band is also referred to as the FR2 frequency band.

[0030] Here, the second antenna 12 is stacked above the first antenna 11. Optionally, the first antenna 11 and the second antenna 12 are both flat and have a thickness of 0.3 to 0.6 mm. The thickness of the first antenna 11 may be the same as or different from that of the second antenna 12, and the embodiment of the present disclosure is not limited thereto.

[0031] Optionally, the area of ​​the second antenna 12 is smaller than the area of ​​the first antenna 11, i.e., when the second antenna 12 is stacked above the first antenna 11, it is necessary to ensure that the second antenna 12 cannot completely block the first antenna 11, so as to ensure that the first antenna 11 can receive or transmit signals normally.

[0032] Optionally, the projection of the second antenna 12 on the plane where the first antenna 11 is located is located at an edge region of the first antenna 11. The edge region is a region of the first antenna 11 whose distance from the boundary of the antenna is less than a certain threshold. Optionally, the threshold is determined based on the planar size of the first antenna 11, for example, if the planar size of the first antenna 11 is 50*10mm, the region of the first antenna 11 that is less than 2mm from the boundary is the edge region. Also, for example, if the planar size of the first antenna 11 is 100*20mm, the region of the first antenna 11 that is less than 4mm from the boundary is the edge region. Optionally, the second antenna 12 is installed at a corner position or an edge position of the first antenna 11, and the embodiment of the present disclosure is not limited thereto. For example, when the first antenna 11 is rectangular or approximately rectangular, the projection area of ​​the second antenna 12 on the plane in which the first antenna 11 is located may be located in a position close to any one of the corners of the first antenna 11, or in a position close to any one of the sides of the first antenna 11.

[0033] Optionally, as shown in FIG. 1, a first support structure 21 is installed between the second antenna 12 and the first antenna 11. The first support structure 21 is for allowing a certain gap to exist between the second antenna 12 and the first antenna 11, and for avoiding interference between the signals of the two antennas, thereby ensuring normal reception or transmission of signals. The first support structure 21 has non-conductivity. Optionally, the material for making the first support structure 21 may be rubber, glass, diamond, or non-conductive metal, etc., and the embodiment of the present disclosure is not limited thereto. Taking non-conductive metal as an example, a polymer insulating coating layer can be formed on the surface of the metal by methods such as normal painting, electrophoretic painting, electrostatic painting, fluidized bed painting, flame spray painting, etc., and an inorganic non-metallic insulating layer can be formed on the surface of the metal by methods such as oxidation, passivation, and phosphorization.

[0034] In addition, the shape of the first support structure 21 may be a cylindrical shape or a rectangular parallelepiped shape, and the embodiment of the present disclosure is not limited thereto. In addition, in the embodiment of the present disclosure, the number or size of the first support structure 21 is correlated with the size and shape of the first antenna 11 and the second antenna 12, and both can be designed according to the actual situation, and the embodiment of the present disclosure is not limited thereto.

[0035] As described above, in the technical solution provided in the embodiment of the present disclosure, the second antenna is stacked on the first antenna, which improves the space utilization rate of the antenna, reduces the cost of the antenna, realizes high integration of the antenna, makes the layout of the antenna more flexible, and increases the space available for other hardware of the mobile terminal, which is convenient for optimizing the performance of the entire mobile terminal system.

[0036] 2 is a schematic diagram of an antenna structure provided in another exemplary embodiment of the present disclosure. As shown in FIG. 2, the antenna structure 10 includes a first antenna 11, a second antenna 12 and a third antenna 13.

[0037] The first antenna 11 is used to radiate signals in a first frequency band, the second antenna 12 is used to radiate signals in a second frequency band, and the third antenna 13 is used to radiate signals in a third frequency band. Here, the frequency of the second frequency band is higher than that of the first frequency band, and the frequency of the third frequency band is higher than that of the second frequency band. For example, the frequency range of the first frequency band is [a, b], the frequency range of the second frequency band is [c, d], and the frequency range of the third frequency band is [e, f]. The frequency of the second frequency band being higher than that of the first frequency band means that c is greater than b, and the frequency of the third frequency band being higher than that of the second frequency band means that e is greater than d. The above a, b, c, d, e, and f are all frequency values, and their units may be Hertz (Hz).

[0038] Optionally, the first frequency band is a non-5G frequency band, such as 2G, 3G and 4G frequency bands, the second frequency band is a sub-6G frequency band in the 5G frequency band, and the third frequency band is a millimeter wave frequency band in the 5G frequency band, the millimeter wave frequency band being a millimeter wave frequency range, and the millimeter wave is a radio wave having a wavelength of 1 to 10 mm. The non-5G frequency band, the sub-6G frequency band and the millimeter wave frequency band may refer to the above embodiments for explanations, and detailed explanations will be omitted here.

[0039] Here, the second antenna 12 is stacked above the first antenna 11, and the third antenna 13 is stacked above the second antenna 12. Optionally, the third antenna 13 has a flat plate shape and a thickness of 0.3 to 0.6 mm. The thicknesses of the first antenna 11, the second antenna 12, and the third antenna 13 may be the same or different, and the embodiment of the present disclosure is not limited thereto. The stacking positions of the second antenna 12 and the third antenna 13 may be the same or different. For example, the second antenna 12 is stacked at the upper left corner of the first antenna 11, and the third antenna 13 is stacked at the upper right corner of the second antenna 12, or the second antenna 12 is stacked at the upper left corner of the first antenna 11, and similarly, the third antenna 13 is stacked at the upper left corner of the second antenna 12, and the embodiment of the present disclosure is not limited thereto.

[0040] Optionally, the area of ​​the third antenna 13 is smaller than the area of ​​the second antenna 12, i.e., when the third antenna 13 is stacked above the second antenna 12, it is necessary to ensure that the third antenna 13 cannot completely block the second antenna 12, so as to ensure that the second antenna 12 can receive or transmit signals normally.

[0041] Optionally, the projection of the third antenna 13 on the plane where the second antenna 12 is located is located at an edge region of the second antenna 12. Similar to the edge region of the first antenna 11 described above, the edge region of the second antenna 12 is a region of the second antenna 12 whose distance from the antenna boundary is less than a certain threshold. Optionally, the threshold is determined based on the planar size of the second antenna 12. Optionally, the third antenna 13 is installed at a corner position or an edge position of the second antenna 12, and the embodiment of the present disclosure is not limited thereto. For example, when the second antenna 12 is rectangular or approximately rectangular, the projection region of the third antenna 13 on the plane where the second antenna 12 is located may be located at a position close to any one of the corners of the second antenna 12, or may be located at a position close to any one of the sides of the second antenna 12.

[0042] Optionally, as shown in Fig. 2, a second support structure 22 is installed between the third antenna 13 and the second antenna 12. Similar to the first support structure 21, the second support structure 22 is for providing a certain gap between the third antenna 13 and the second antenna 12, and avoids interference between the signals of the two antennas to ensure normal signal reception or transmission, and the second support structure 22 has non-conductivity. Optionally, the material of the second support structure 22 may be rubber, glass, diamond, non-conductive metal, etc., and the embodiment of the present disclosure is not limited thereto.

[0043] In addition, the shape of the second support structure 22 may be a cylindrical shape or a rectangular parallelepiped shape, and the embodiment of the present disclosure is not limited thereto. In addition, in the embodiment of the present disclosure, the number or size of the second support structure 22 correlates with the size and shape of the second antenna 12 and the third antenna 13.

[0044] In addition, the manufacturing material, shape, or size of the second support structure 22 may be the same as or different from that of the first support structure 21, and any of them can be designed according to the actual situation, and the embodiments of the present disclosure are not limited in this regard.

[0045] In the above stacking method, the second antenna 12 and the third antenna 13 are located in different layers. Referring to Fig. 3, taking the case where the stacking positions of the second antenna 12 and the third antenna 13 are the same as an example, in the antenna structure 10, the first antenna 11 is located in the bottom layer, the second antenna 12 is stacked in the upper left corner of the first antenna 11 via a first support structure 21 (not shown in Fig. 3), and the third antenna 13 is stacked in the upper left corner of the second antenna 12 via a second support structure 22 (not shown in Fig. 3).

[0046] As described above, in the technical solution provided in the embodiments of the present disclosure, the third antenna is stacked on the edge region of the second antenna, thereby expanding the signal receiving or transmitting range of the antenna, reducing the cost of the antenna, and achieving high integration of the antenna.

[0047] 4 is a schematic diagram of an antenna structure provided in another exemplary embodiment of the present disclosure. As shown in FIG. 4, the antenna structure 10 includes a first antenna 11, a second antenna 12 and a third antenna 13.

[0048] The first antenna 11 is used to radiate signals in a first frequency band, the second antenna 12 is used to radiate signals in a second frequency band, and the third antenna 13 is used to radiate signals in a third frequency band. Here, the frequency of the second frequency band is higher than that of the first frequency band, and the frequency of the third frequency band is higher than that of the first frequency band. For example, the frequency range of the first frequency band is [a, b], the frequency range of the second frequency band is [c, d], and the frequency range of the third frequency band is [e, f]. The frequency of the second frequency band being higher than that of the first frequency band means that c is greater than b, and the frequency of the third frequency band being higher than that of the first frequency band means that e is greater than b. The above a, b, c, d, e, and f are all frequency values, and their units may be Hertz (Hz).

[0049] In one possible embodiment, the first frequency band is a non-5G frequency band, such as 2G, 3G and 4G frequency bands, the second frequency band is a sub-6G frequency band in the 5G frequency band, and the third frequency band is a millimeter wave frequency band in the 5G frequency band. In another possible embodiment, the first frequency band is a non-5G frequency band, such as 2G, 3G and 4G frequency bands, the second frequency band is a millimeter wave frequency band in the 5G frequency band, and the third frequency band is a sub-6G frequency band in the 5G frequency band.

[0050] Here, the second antenna 12 is stacked above the first antenna 11, and the third antenna 13 is stacked above the first antenna 11, and the third antenna 13 and the second antenna 12 are installed at different positions above the first antenna 11. For example, the second antenna 12 is stacked at the upper left corner of the first antenna 11, and the third antenna 13 is stacked at the upper right corner of the first antenna 11.

[0051] The area, stacking region, and support structure of the first antenna 11, the second antenna 12, and the third antenna 13 have already been described in detail above, and a detailed description thereof will be omitted here.

[0052] In the above-mentioned stacking method, the second antenna 12 and the third antenna 13 are located in the same layer. Referring to Fig. 5, taking the case where the stacking positions of the second antenna 12 and the third antenna 13 are different as an example, in the antenna structure 10, the first antenna 11 is located in the bottom layer, the second antenna 12 is stacked in the upper left corner of the first antenna 11 via a first support structure 21 (not shown in Fig. 5), and the third antenna 13 is stacked in the lower right corner of the first antenna 11 via a second support structure 22 (not shown in Fig. 5).

[0053] As described above, in the technical solution provided in the embodiments of the present disclosure, the third antenna is stacked on the edge region of the first antenna, thereby locating the second antenna and the third antenna on the same layer, expanding the range for receiving or transmitting signals, improving the spatial utilization rate of the antenna, reducing the cost of the antenna, and achieving high integration of the antenna.

[0054] It should be noted that in the above several embodiments, the technical solution of the present disclosure has been mainly described using the case where the antenna structure includes two antennas or three antennas as an example. However, in practical application, if necessary, the antenna structure may further include four or even more antennas, and each antenna may be stacked according to the technical solution provided in the above embodiments, and the frequency range of the upper antenna may be greater than the frequency range of the lower antenna. Furthermore, one antenna may be stacked above the antenna (as shown in the embodiment of FIG. 2), or multiple antennas may be stacked (as shown in the embodiment of FIG. 3), both of which are within the scope of protection of the present disclosure.

[0055] 6 is a schematic diagram of a mobile terminal provided in an exemplary embodiment of the present disclosure, which includes the antenna structure 10 according to the above embodiment.

[0056] Optionally, as shown in Fig. 6, the antenna structure 10 is located at the upper left corner of a mobile terminal 60. Here, the antenna structure 10 is connected to a feeding circuit 61 and a grounding circuit 62. The feeding circuit 61 is used to supply power to the antenna structure 10 so as to ensure the normal operation of the antenna structure 10. The grounding circuit 62 is used to protect the antenna structure 10 from damage caused by overcurrent when the feeding circuit 61 fails.

[0057] In one possible embodiment, at least two of the first antenna 11, the second antenna 12, and the third antenna 13 are connected to different feeding circuits 61, and at least two of the first antenna 11, the second antenna 12, and the third antenna 13 are connected to different ground circuits 62. For example, the first antenna 11 is connected to a feeding circuit A and a ground circuit A, the second antenna 12 is connected to a feeding circuit B and a ground circuit B, and the third antenna 13 is connected to a feeding circuit C and a ground circuit C. In another possible embodiment, the first antenna 11, the second antenna 12, or the third antenna 13 are connected to the same feeding circuit 61 or ground circuit 62, for example, the first antenna 11, the second antenna 12, or the third antenna 13 are connected to the same feeding circuit, and at the same time, the first antenna 11, the second antenna 12, or the third antenna 13 are connected to the same ground circuit.

[0058] Optionally, the location of the antenna structure 10 in different mobile terminals is different, for example, the antenna structure may be located at the top left corner, top right corner, bottom left corner, or bottom right corner of the mobile terminal 60, and the embodiments of the present disclosure are not limited thereto.

[0059] Optionally, the mobile terminal 60 may further include a screen display, a power supply battery, a camera, a distance sensor, a pressure sensor, a central processing unit (CPU), etc., although the embodiments of the present disclosure are not limited thereto.

[0060] As described above, in the technical solution provided in the embodiment of the present disclosure, the second antenna is stacked on the first antenna, which improves the space utilization rate of the antenna, reduces the cost of the antenna, realizes high integration of the antenna, makes the layout of the antenna more flexible, and increases the space available for other hardware of the mobile terminal, which is convenient for optimizing the performance of the entire mobile terminal system.

[0061] Those skilled in the art can easily obtain other embodiments of the present disclosure through a reading of the specification and practice of the invention described in the specification. This application includes any modification, application, or adaptation to the present disclosure, which modification, application, or adaptation follows the general principles of the present disclosure and includes known knowledge or ordinary technical means in the art that are not disclosed in the present disclosure. The specification and examples are merely exemplary, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0062] The present disclosure is not limited to the specific configurations described above and illustrated in the drawings, and various modifications and alterations may be made thereto without departing from the scope of the present disclosure, which is limited only by the appended claims.

Claims

1. a first antenna and a second antenna; the first antenna is adapted to radiate signals in a first frequency band; the second antenna is used to radiate signals in a second frequency band, the frequencies of the second frequency band being higher than the frequencies of the first frequency band; the second antenna is stacked above the first antenna, The first antenna and the second antenna each have a flat plate shape, a projection of the second antenna on a plane in which the first antenna is located is located at a corner of the first antenna; a third antenna for radiating signals in a third frequency band; the third frequency band has a higher frequency than the first frequency band; The third antenna is stacked above the first antenna, and projections of the third antenna and the second antenna on a plane in which the first antenna is located are located at different corners of the first antenna and do not overlap with each other, or at least one side of each projection overlaps with any one side of the first antenna and two projections do not overlap with each other.

1. An antenna structure for a mobile terminal, comprising:

2. The area of ​​the second antenna is smaller than the area of ​​the first antenna.

2. An antenna structure for a mobile terminal according to claim 1.

3. A first support structure is provided between the second antenna and the first antenna, the first support structure being made of a non-conductive material, and the first support structure is adapted to provide a certain gap between the second antenna and the first antenna.

2. An antenna structure for a mobile terminal according to claim 1.

4. A mobile terminal comprising an antenna structure for a mobile terminal according to any one of claims 1 to 3.

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