Antenna structure and mobile terminal

Abstract

The utility model discloses an antenna structure and a mobile terminal, and relates to the antenna technology field, the antenna structure comprises a basic coupling body and a radiation body, the radiation body is in coupling connection with the basic coupling body and is vertical to the basic coupling body, the radiation body comprises at least two radiation branches, and the radiation branches are arranged in an inner and outer surrounding manner; according to the technical scheme of the utility model, the radiation body and the basic coupling body are vertically arranged, so that the antenna structure can be conveniently arranged in the mobile terminal, and the occupied space of the antenna structure can be reduced as much as possible; the internal and external surrounding arrangement of the radiation branches may help to form a more complex electromagnetic radiation mode, and improves the radiation efficiency and directivity of the antenna. The antenna structure can realize a larger radiation area in a limited space, the antenna gain and bandwidth are improved, and the working efficiency of the antenna structure is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and particularly relates to an antenna structure and a mobile terminal. Background Art

[0002] With the continuous speed increase of various mobile communication technologies, the demand for the number of antennas in terminal devices such as mobile phones / tablets has increased significantly. At the same time, people's aesthetic requirements are getting higher and higher, and various mobile terminal devices are developing in the direction of ultra-thin and large screen-to-body ratio, and thus the space and position left for each antenna are extremely reduced. Traditional antenna solutions are mostly planar-designed monopole plus parasitic and PIFA antennas, and the antenna elements and ground of traditional design solutions need to be wired, which invisibly increases the area required for the antenna to work. Therefore, traditional antenna design solutions will no longer be applicable to products with ultra-thin, large screen-to-body ratio and a large number of antennas. How to ensure the efficiency of the antenna within a limited installation space has always been an urgent problem to be solved. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose an antenna structure and a mobile terminal, aiming to improve the utilization rate of the antenna installation space, increase the bandwidth of the antenna within a limited installation space, and ensure the working efficiency of the antenna.

[0004] To achieve the above object, the antenna structure proposed by the utility model includes:

[0005] A basic coupling body;

[0006] A radiator, the radiator is coupled to the basic coupling body and is vertically arranged with respect to the basic coupling body. The radiator includes at least two radiation branches, and each of the radiation branches is arranged in an inner and outer surrounding manner.

[0007] In an embodiment, the radiator includes a first radiation branch, a second radiation branch and a third radiation branch. The first radiation branch, the second radiation branch and the third radiation branch are all arranged in an L shape and are sequentially connected end to end to form the radiator. The basic coupling body is connected to a side of the second radiation branch away from the first radiation branch.

[0008] In an embodiment, the length of the first radiation branch is l1, the length of the second radiation branch is l2, and the length of the third radiation branch is l3, and l2 < l1 < l3.

[0009] In an embodiment, the basic coupling body is a gold finger, and the gold finger further includes a feeding pin and a grounding pin. The feeding pin and the grounding pin are spaced apart on a side of the gold finger facing away from the radiator.

[0010] In one embodiment, at least one folding hole is further formed in the antenna structure, and the folding hole is provided at the junction of the basic coupler and the radiator.

[0011] In one embodiment, the number of the folding holes is two, and the folding holes are arranged at intervals along the length direction of the basic coupler.

[0012] In one embodiment, the antenna structure is an FPC combined with a copper-clad antenna.

[0013] In one embodiment, the material of the antenna structure is copper.

[0014] The present utility model further provides a mobile terminal, which includes the above-mentioned antenna structure, and the antenna structure includes:

[0015] A basic coupler;

[0016] A radiator, the radiator is coupled to the basic coupler and is perpendicular to the basic coupler. The radiator includes at least two radiation branches, and the radiation branches are arranged in an inner and outer surrounding manner.

[0017] The technical solution of the present utility model makes the radiator perpendicular to the basic coupler, which is convenient for arranging the antenna structure in the mobile terminal to minimize the occupied space of the antenna structure as much as possible. The radiator is composed of at least two radiation branches, and the inner and outer surrounding arrangement of these radiation branches may help to form a more complex electromagnetic radiation pattern, improve the radiation efficiency and directivity of the antenna. It enables the antenna structure to achieve a larger radiation area in a limited space, improves the antenna gain and bandwidth, and ensures the working efficiency of the antenna structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the antenna structure provided by the present utility model.

[0020] Explanation of the reference numerals in the drawings:

[0021] 1000. Antenna structure; 1. Basic coupler; 11. Feeding pin; 12. Feeding ground pin; 2. Radiator; 21. First radiation branch; 22. Second radiation branch; 23. Third radiation branch; 3. Folding hole.

[0022] The realization, functional features and advantages of the present utility model will be further described in conjunction with embodiments with reference to the accompanying drawings. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0026] With the continuous speed increase of various mobile communication technologies, the demand for the number of antennas in terminal devices such as mobile phones / tablets has increased significantly. At the same time, people's aesthetic requirements are getting higher and higher, and various mobile terminal devices are developing in the direction of ultra-thin and large screen-to-body ratio, and thus the space and position left for each antenna are extremely reduced. Traditional antenna solutions are mostly planar-designed monopole plus parasitic and PIFA antennas, and the antenna elements and ground of traditional design solutions need to be wired, which invisibly increases the area required for the antenna to work. Therefore, traditional antenna design solutions will no longer be applicable to products with ultra-thin, large screen-to-body ratio and a large number of antennas. How to ensure the efficiency of the antenna in a limited installation space has always been an urgent problem to be solved.

[0027] To solve the above problems, please refer toFigure 1 , the present utility model proposes an antenna structure 1000, which includes a basic coupling body 1 and a radiator 2. The radiator 2 is coupled to the basic coupling body 1 and is vertically arranged with respect to the basic coupling body 1. The radiator 2 includes at least two radiation branches, and each radiation branch is arranged in an inner and outer surrounding manner.

[0028] The technical solution of the present utility model is to arrange the radiator 2 vertically with respect to the basic coupling body 1, which facilitates the layout of the antenna structure 1000 in a mobile terminal to minimize the occupied space of the antenna structure 1000 as much as possible. The radiator 2 is composed of at least two radiation branches, and the inner and outer surrounding arrangement of these radiation branches may help to form a more complex electromagnetic radiation pattern, improving the radiation efficiency and directivity of the antenna. Enabling the antenna structure 1000 to achieve a larger radiation area within a limited space, improving the antenna gain and bandwidth, and ensuring the working efficiency of the antenna structure 1000.

[0029] In an optional embodiment, to further improve the bandwidth of the antenna structure 1000, the radiator 2 includes a first radiation branch 21, a second radiation branch 22, and a third radiation branch 23. The first radiation branch 21, the second radiation branch 22, and the third radiation branch 23 are all arranged in an L shape and are sequentially connected end to end to form the radiator 2 in a surrounding manner. The basic coupling body 1 is connected to the side of the second radiation branch 22 away from the first radiation branch 21. Please refer to Figure 1 , the first radiation branch 21, the second radiation branch 22, and the third radiation branch 23 are connected end to end to form the radiator 2 in a surrounding manner, forming a structure similar to a spiral, which helps to enhance the bandwidth performance of the antenna and enables it to have a wider operating frequency range. In addition, the connection of the basic coupling body 1 to one side of the second radiation branch 22 helps to optimize the input impedance and radiation efficiency of the antenna structure 1000.

[0030] Specifically, the length of the first radiation branch 21 is l1, the length of the second radiation branch 22 is l2, and the length of the third radiation branch 23 is l3, where l2 < l1 < l3. This increasing length design not only helps to form radiation branches of different lengths to achieve multi-band operation of the antenna structure 1000. In practical applications, radiation branches of different lengths can cover different communication frequency bands, improving the adaptability and flexibility of the antenna. In addition, by adjusting the length of the radiation branches, the operating frequency and bandwidth of the antenna can also be optimized to achieve optimization of specific frequency bands. Please refer to Figure 1, in this embodiment, according to the lengths of the respective radiation branches, the antenna combination of this solution can form an intermediate-frequency radiation unit, a high-frequency radiation unit, and a low-frequency radiation unit. According to the basic principle of C = λ * f and L = λ / 4 (where C is the speed of light, λ is the wavelength, f is the frequency, and L is the antenna length), since the speed of light is a constant value, that is, the wavelength of the antenna is inversely proportional to the frequency, the longer the antenna length, the lower the operating frequency. In this embodiment, the antenna formed by the base coupler 1 - the second radiation branch 22 has the shortest length and forms a high-frequency radiation unit; the antenna formed by the base coupler 1 - the first radiation branch 21 has a moderate length and forms an intermediate-frequency radiation unit; the antenna formed by the base coupler 1 - the second radiation branch 22 - the third radiation branch 23 has the longest length and forms a low-frequency radiation unit. In this way, through the three radiation units with different frequencies, the antenna structure 1000 has a wider operating frequency and improves the operating efficiency of the antenna.

[0031] In an alternative embodiment, to facilitate the feeding and grounding of the antenna structure 1000, the base coupler 1 is a gold finger, and the gold finger further includes a feeding pin 11 and a grounding pin 12, which are spaced apart on the side of the gold finger facing away from the radiator 2. It should be noted that the gold finger of the antenna structure 1000 refers to the antenna PIN feet using a gold plating process to prevent the oxidation of the antenna PIN feet, thereby ensuring the contact performance and radiation performance of the antenna structure 1000; the design of the gold finger helps to realize the circuit connection between the antenna structure 1000 and the circuit inside the mobile terminal, and its shape and layout can optimize the signal transmission efficiency and reduce signal loss. The settings of the feeding pin 11 and the grounding pin 12 are to provide a necessary electrical path so that signals can effectively be transmitted from the mobile terminal to the antenna radiator 2. In addition, since the feeding pin 11 and the grounding pin 12 of the antenna structure 1000 are both integrally connected to the gold finger, the gold finger of the antenna structure 1000 is both the common end of the low-frequency radiation unit, the intermediate-frequency radiation unit, and the high-frequency radiation unit of the antenna, and at the same time is the ground of the antenna. The wiring utilization rate of the antenna structure 1000 is extremely high, simplifying the wiring of the antenna structure 1000 and greatly reducing the overall area of the antenna.

[0032] In an alternative embodiment, to facilitate the shaping of the antenna structure 1000, the antenna structure 1000 further forms at least one folding hole 3, and the folding hole 3 is provided at the boundary position between the base coupler 1 and the radiator 2. When the antenna is fabricated and formed, the folding hole 3 can serve as a folding point to provide necessary mechanical support, enabling the antenna structure 1000 to bend or fold around this point. In addition, due to the different coefficients of expansion or contraction of the materials of different antenna structures 1000 under temperature changes, the folding hole 3 can provide necessary space to accommodate thermal expansion and prevent the antenna structure 1000 from being damaged.

[0033] Further, in this embodiment, the number of folding holes 3 is two, and the folding holes 3 are arranged at intervals along the length direction of the base coupling body 1. Arranging the folding holes 3 on both sides of the base coupling body 1 in the length direction helps to achieve a more uniform and stable folding effect, and may also help to improve the symmetry and aesthetics of the antenna structure 1000. The arrangement of the two folding holes 3 can also provide additional mechanical stability.

[0034] In an alternative embodiment, to facilitate the fabrication of the antenna structure 1000, the antenna structure 1000 is an FPC integrated with a copper-clad antenna. By using an FPC (flexible printed circuit) as the substrate of the antenna structure 1000, it is easy to form the antenna by bending, and copper is plated on the FPC board to form the radiator 2 of the antenna structure 1000. Copper plating refers to the process of covering a layer of conductive material (usually copper) on the substrate, which is used to improve the conductivity, enhance the signal transmission efficiency, provide shielding and improve thermal management. In addition, a steel sheet can also be used as the substrate to fabricate the antenna structure 1000, or the antenna structure 1000 can be fabricated by directly forming a three-dimensional circuit pattern on the substrate through LDS (laser direct structuring). The actual forming and manufacturing method can be selected according to actual needs and will not be specifically limited herein.

[0035] In an alternative embodiment, the material of the antenna structure 1000 is copper. Due to its excellent electrical conductivity and plasticity, copper can ensure that the antenna has high-efficiency signal transmission capabilities. The use of copper material also helps to improve the mechanical strength and corrosion resistance of the antenna, thereby enhancing the durability and reliability of the antenna.

[0036] The present utility model also provides a mobile terminal, which includes the antenna structure 1000. The specific structure of the antenna structure 1000 refers to the above embodiments. Since this mobile terminal adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein one by one. In practical applications, the antenna structure 1000 can be widely applied to mobile terminal devices using communication systems such as WiFi / BT / GPS / 2G / 3G / 4G / 5G, such as smartphones, tablets, smart watches, etc. By integrating the antenna structure 1000 into the mobile terminal, the overall communication performance and user experience of the device can be improved. Improving the efficiency of the antenna within a limited space is beneficial to meeting the requirements of the mobile terminal for a thin and light design.

[0037] The above description is only an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. An antenna structure, characterized in that, Comprising: A basic coupling body; A radiator, which is coupled to the basic coupling body and is perpendicularly arranged with respect to the basic coupling body. The radiator includes at least two radiation branches, and each of the radiation branches is arranged in an inner and outer surrounding manner.

2. The antenna structure according to claim 1, wherein The radiator includes a first radiation branch, a second radiation branch, and a third radiation branch. The first radiation branch, the second radiation branch, and the third radiation branch are all arranged in an L shape and are sequentially connected end to end to surround and form the radiator. The basic coupling body is connected to a side of the second radiation branch away from the first radiation branch.

3. The antenna structure according to claim 2, wherein The length of the first radiation branch is l1, the length of the second radiation branch is l2, and the length of the third radiation branch is l3, where l2 < l1 < l3.

4. The antenna structure according to any one of claims 2 to 3, characterized in that, The basic coupling body is a gold finger, and the gold finger further includes a feeding pin and a grounding pin. The feeding pin and the grounding pin are spaced apart on a side of the gold finger facing away from the radiator.

5. The antenna structure according to claim 4, characterized in that, The antenna structure further forms at least one folding hole, and the folding hole is arranged at a junction position between the basic coupling body and the radiator.

6. The antenna structure according to claim 5, wherein, The number of the folding holes is two, and each of the folding holes is spaced apart along the length direction of the basic coupling body.

7. The antenna structure according to claim 1, wherein The antenna structure is an FPC combined with a copper-clad antenna.

8. The antenna structure according to claim 1, wherein, The material of the antenna structure is copper.

9. A mobile terminal, characterized in that, Comprising the antenna structure according to any one of claims 1 to 8.

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