CN207852905U - A kind of LTE antenna and mobile terminal - Google Patents

Abstract

The embodiments of the present invention disclose a kind of LTE antenna and mobile terminal, and in the same plane, the reduction of antenna height is so as to apply in constantly lightening terminal for the main radiating element, coupled microstrip line and earth plate setting in the LTE antenna.Secondly, the coupled microstrip line connection earth plate of the LTE antenna, one end of feed element connect main radiating element, and the other end connects earth plate, constitutes loop antenna, improves low-frequency impedance, be conducive to the bandwidth of broadening default low-frequency band.Finally, in the LTE antenna, coupled microstrip line is connect by earth plate with feed element, and compared with the antenna that independent power supply unit is arranged for coupled microstrip line, which eliminates the setting of independent power supply unit, saves space.Position by adjusting main radiating element and coupled microstrip line in the LTE antenna and spacing, can obtain the antenna of required bandwidth, obtain antenna compact-sized, small, more than frequency range.

Description

A kind of LTE antenna and mobile terminal

technical field

The embodiment of the utility model relates to the technical field of communication equipment, in particular to an LTE antenna and a mobile terminal.

Background technique

With the rapid upgrading of the wireless communication industry and the rapid development of technology, mobile phone antennas have rapidly developed from external antennas to built-in antennas, and signals have also developed from analog signals to digital signals. Therefore, the first-generation analog signal mobile communication system is quickly replaced by the second-generation digital signal. The communication system (2G) was replaced by the 2G network, and the rapid development of the 2G network to the 3G and 4G networks, as well as the rapid popularization of smart terminals, made users put forward higher requirements for wireless terminals, such as high-speed, multi-band and multi-functional requirements. Drive the antenna to the direction of miniaturization, integration and high performance.

There are currently three main types of built-in antennas for mobile terminals: monopole antennas (monopole), PIFA antennas (PlanarInverted F-shaped Antenna, planar inverted F-shaped antennas), and variant antennas evolved from monopole antennas and PIFA antennas. Although these three antennas can meet the requirements of miniaturization, integration, and high performance, and also meet the requirements of multi-frequency bands, the current development of mobile communications and terminal equipment requires more and more terminal antennas, which makes the above three The antenna does not meet the requirements. For example, terminal antennas are required to support network-wide 2/3/4G. The above-mentioned monopole antenna and PIFA antenna are difficult to meet these requirements due to the small number of operating frequency bands. Although the above-mentioned variant antenna can meet the requirements of supporting the entire network 2/3/4G, the height of the antenna is relatively high, and it is not suitable for ultra-thin mobile terminal.

Based on this, in the process of implementing the embodiments of the present invention, the inventors found that existing antennas have fewer operating frequency bands, lower radiation efficiency or gain, and higher antenna heights, making it difficult to apply to thinner and lighter terminals.

Utility model content

The technical problem to be solved by the embodiment of the utility model is how to solve the problem that the existing antenna has fewer working frequency bands, lower radiation efficiency or gain, and higher antenna height, which makes it difficult to apply to increasingly thinner and lighter terminals.

In view of the above technical problems, an embodiment of the present invention provides an LTE antenna, including a main radiation unit, a feeding unit, a coupling microstrip line and a grounding plate;

The main radiating unit, the coupled microstrip line and the grounding plate are arranged in the same plane;

The coupled microstrip line is connected to the ground plane;

One end of the feed unit is connected to the main radiation unit, and the other end is connected to the ground plate;

Wherein, after the feeding unit supplies power to the main radiation unit and the coupled microstrip line, the preset low frequency band and the preset high frequency band are obtained through the frequency coupling effect of the main radiation unit and the coupled microstrip line. frequency band.

In a second aspect, an embodiment of the present invention provides a mobile terminal, including the above-mentioned LTE antenna.

Embodiments of the present invention provide an LTE antenna and a mobile terminal. The main radiation unit, the coupling microstrip line and the grounding plate in the LTE antenna are arranged in the same plane, and the reduction of the antenna height enables it to be applied in continuous thinning on the terminal. Secondly, the coupled microstrip line of the LTE antenna is connected to the ground plate, one end of the feed unit is connected to the main radiation unit, and the other end is connected to the ground plate to form a loop antenna, which improves the low-frequency impedance and is conducive to widening the bandwidth of the preset low-frequency band. Finally, in the LTE antenna, the coupled microstrip line is connected to the feed unit through the ground plate. Compared with the antenna that sets an independent power supply unit for the coupled microstrip line, the LTE antenna saves the setting of an independent power supply unit, saving space. By adjusting the position and distance between the main radiation unit and the coupling microstrip line in the LTE antenna, an antenna with required bandwidth can be obtained, and an antenna with compact structure, small volume and multiple frequency bands can be obtained.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the appended drawings in the following description The drawings show some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 is a schematic structural diagram of an LTE antenna provided by an embodiment of the present invention;

Fig. 2 is the structure schematic diagram of the LTE antenna that is made on the PCB circuit board provided by another embodiment of the utility model;

Fig. 3 is the return loss coefficient diagram of the LTE antenna provided by another embodiment of the present invention;

Fig. 4 is a diagram of antenna gain and radiation efficiency of an LTE antenna provided by another embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

FIG. 1 is a schematic structural diagram of an LTE antenna provided in this embodiment. Referring to Figure 1, the LTE antenna includes:

Including main radiation unit 101, feed unit 102, coupled microstrip line 103 and ground plate 104;

The main radiation unit 101, the coupled microstrip line 103 and the ground plane 104 are arranged in the same plane;

The coupled microstrip line 103 is connected to the ground plane 104;

One end of the feed unit 102 is connected to the main radiation unit 101, and the other end is connected to the ground plate 104;

Wherein, after the feeding unit 102 supplies power to the main radiation unit 101 and the coupled microstrip line 103, the preset low frequency is obtained through the frequency coupling effect of the main radiation unit 101 and the coupled microstrip line 103. frequency band and preset high frequency band.

The LTE antenna provided in this embodiment is mainly proposed for the high antenna height in the prior art, which is difficult to adapt to the electronic products that are becoming thinner and thinner. In the LTE antenna in this embodiment, the main radiating unit, the coupling microstrip line and the ground plane are arranged in the same plane, and by adjusting the interval between each radiating unit in the main radiating unit, each microstrip line in the coupling microstrip line The interval between them makes the main radiating unit and the coupled microstrip line obtain the required frequency band through frequency coupling.

The feeding unit 102 is used to provide power for the LTE antenna. The specific shape and distribution of the main radiating unit 101 and the coupled microstrip line 103 can be designed according to the required frequency band, which is not specifically limited in this embodiment, as long as the main radiating unit 101 and the coupled microstrip line 103 can be coupled through frequency coupling. It is sufficient to obtain the preset low frequency band and the preset high frequency band.

As shown in FIG. 1 , the coupled microstrip line 103 of the LTE antenna in this embodiment is connected to the ground plate 104 , one end of the feed unit 102 is connected to the main radiation unit 101 , and the other end is connected to the ground plate 104 to form a loop antenna. The structure of the loop antenna improves the low-frequency impedance, which is beneficial to increase the low-frequency bandwidth. On the other hand, between the feed point and the short-circuit point in the ground plane 104, the part used to transmit electric energy for the coupled microstrip line 103 acts as a "coupled microstrip line", so by performing During design, the length of the actual microstrip line that needs to be fabricated can be shortened.

It should be noted that the main radiation unit, the coupled microstrip line and the ground plane are all metal, for example, copper foil. In the method provided in this embodiment, the main radiation unit, the coupling microstrip line and the grounding plate are arranged in the same plane, and these patterns can be formed in only one process during the manufacturing process. For example, the patterns of the main radiation unit, the coupled microstrip line and the ground plane are formed on the copper foil through one process.

The embodiment of the present invention provides an LTE antenna, in which the main radiation unit, the coupled microstrip line and the grounding plate are arranged in the same plane, and the reduction of the antenna height enables it to be applied to increasingly thinner and lighter terminals . Secondly, the coupled microstrip line of the LTE antenna is connected to the ground plate, one end of the feed unit is connected to the main radiation unit, and the other end is connected to the ground plate to form a loop antenna, which improves the low-frequency impedance and is conducive to widening the bandwidth of the preset low-frequency band. Finally, in the LTE antenna, the coupled microstrip line is connected to the feed unit through the ground plate. Compared with the antenna that sets an independent power supply unit for the coupled microstrip line, the LTE antenna saves the setting of an independent power supply unit, saving space. By adjusting the position and distance between the main radiation unit and the coupling microstrip line in the LTE antenna, an antenna with required bandwidth can be obtained, and an antenna with compact structure, small volume and multiple frequency bands can be obtained.

Furthermore, on the basis of the foregoing embodiments, as shown in FIG. 2 , a PCB circuit board 105 is also included;

The main radiating unit, the coupled microstrip line and the ground plane are arranged on the same side of the PCB circuit board 105 .

As shown in Figure 2, the main radiating unit 101 and the coupling microstrip line 103 can be arranged at one end of the PCB circuit board 105, and the remaining part of the PCB circuit board is covered with copper foil, which can both serve as the ground plate 104 or partially serve as the ground plate 104. As for the grounding plate, the circuit structure can be made in other places, which is not specifically limited in this embodiment.

On the one hand, the PCB circuit board 105 can increase the dielectric constant of the LTE antenna, so that the size of the ground plane is smaller; to the role of structural support. When the LTE antenna structure only includes the main radiating unit, the coupled microstrip line and the ground plane arranged on the same plane, the air acts as the dielectric layer of the LTE antenna. Due to the small dielectric constant of the air, it is necessary to make the ground plane The size of the circuit board is large enough. When the main radiating unit, the coupled microstrip line and the ground plate are arranged on one side of the PCB circuit board, the size of the ground plate can be reduced due to the large dielectric constant of the PCB circuit board, thereby reducing the the size of the entire LTE antenna.

The embodiment of the present invention provides a kind of LTE antenna, and the main radiating unit in this LTE antenna, coupling microstrip line and ground plane are arranged on one side of PCB circuit board, because the dielectric constant of PCB circuit board is bigger, can The size of the ground plane is reduced, thereby reducing the size of the overall LTE antenna.

Furthermore, on the basis of the above embodiments, the coupling microstrip line includes a first microstrip line and a second microstrip line, the length of the second microstrip line is less than the length of the first microstrip line ;

One end of the first microstrip line is connected to the ground plane, the other end of the first microstrip line is connected to one end of the second microstrip line, and the other end of the second microstrip line is suspended;

The first microstrip line is used to generate a first low-frequency frequency point, the second microstrip line is used to generate a second low-frequency frequency point, and the frequency corresponding to the first low-frequency frequency point is higher than that corresponding to the second low-frequency frequency point Frequency of;

Wherein, the preset low-frequency band is obtained through frequency coupling of the first low-frequency frequency point and the second low-frequency frequency point.

As shown in Figure 1 or 2, in the LTE antenna provided by this embodiment, the coupling microstrip line includes a first microstrip line (the microstrip line connected to the ground plane in Figure 1 or Figure 2) and a second microstrip line ( In Figure 1 or Figure 2, one end is connected to the first microstrip line and the other end is suspended). The first microstrip line and the second microstrip line are mainly used to generate a preset low frequency band.

For example, in this embodiment, it is necessary to generate an LTE antenna with a preset low-frequency band of 694-1030 MHz and a preset high-frequency band of 1580-2740 MHz. In order to generate a preset low-frequency band, the first microstrip line generates a frequency point of about 700 MHz ( The first low frequency frequency point), then the length of the first microstrip line is 1/4 of the electromagnetic wave wavelength a of 700MHz; the second microstrip line generates a frequency point (second low frequency frequency point) of about 1030MHz, then the first microstrip line The length of the line is 1/4 of the electromagnetic wave wavelength b of 1030 MHz.

By adjusting the distance between the first microstrip line and the second microstrip line, and adjusting the impedance of the entire LTE antenna, the first low frequency point and the second low frequency point are frequency coupled to obtain the preset low frequency band.

The embodiment of the present invention provides an LTE antenna, the LTE antenna mainly obtains the preset low frequency band through the first microstrip line and the second microstrip line, and obtains preset low frequency band.

Furthermore, on the basis of the above embodiments, the main radiation unit includes a first radiation unit and a second radiation unit;

The length of the first radiating unit is greater than the length of the second radiating unit, one end of the first radiating unit is connected to one end of the second radiating unit, the first radiating unit and the second radiating unit The other end is suspended;

The first radiating unit is used to generate a first high frequency point, the second radiating unit is used to generate a second high frequency point, the frequency corresponding to the first high frequency point is higher than the frequency corresponding to the second high frequency point ;

Wherein, the preset high frequency band is obtained through frequency coupling of the first high frequency point and the second high frequency point.

As shown in Figure 1 or 2, in the LTE antenna provided by this embodiment, the main radiation unit includes a first radiation unit (a U-shaped radiation unit in Figure 1 or Figure 2 ) and a second radiation unit (Figure 1 or Figure 2 2 in the shape of the L-shaped radiation unit). The first radiating unit and the second radiating unit are mainly used to generate a preset high frequency band.

For example, in this embodiment, it is necessary to generate a preset high frequency band of 1580-2740 MHz. In order to generate a preset high frequency band so that the first radiation unit generates a frequency point (first high frequency frequency point) of about 1800 MHz, then the first radiation unit The length is 1/4 of the electromagnetic wave wavelength c of 1800MHz; the second radiating unit generates a frequency point of about 2200MHz (the second high-frequency frequency point), so the length of the first radiating unit is 1/4 of the electromagnetic wave wavelength d of 2200MHz.

By adjusting the distance between the first radiating unit and the second radiating unit and adjusting the impedance of the entire LTE antenna, the preset high frequency band is obtained through frequency coupling between the first high frequency point and the second high frequency point.

The embodiment of the present invention provides an LTE antenna, the LTE antenna mainly obtains the preset high-frequency band through the first radiation unit and the second radiation unit, and obtains a Preset high frequency band.

Furthermore, on the basis of the above-mentioned embodiments, it also includes:

The first microstrip line includes at least one first bending position, and the second microstrip line includes at least one second bending position;

The first bending position is used to generate a third high-frequency frequency point, and the second bending position is used to generate a fourth high-frequency frequency point;

Wherein, the preset high frequency band is obtained through frequency coupling of the first high frequency point, the second high frequency point, the third high frequency point and the fourth high frequency point.

It should be noted that, according to the principle that the monopole antenna can generate frequency doubling in this embodiment, the first microstrip line is bent to form at least one first bending position, and the second microstrip line is bent to form at least one A second bend position. The double frequency effect will be generated at the first bending position. For example, if the first microstrip line in Figure 1 or Figure 2 generates a frequency point of about 700MHz, then a frequency point of about 1400MHz will be generated at the first bending position. That is, the third high frequency point. The second microstrip line in FIG. 1 or FIG. 2 generates a frequency point of about 1030 MHz, and a frequency point of about 2060 MHz is generated at the second bending position, that is, the fourth high frequency point.

By adjusting the spacing or width of the first microstrip line, the second microstrip line, the first radiating unit and the second radiating unit, the first high frequency point, the second high frequency point, the third high frequency point and the fourth high frequency point The frequency coupling at the frequency point obtains the preset high frequency band.

The embodiment of the present invention provides an LTE antenna, which utilizes the double frequency principle to generate more high-frequency frequency points, and further realizes the increase of the preset high-frequency frequency band through the frequency coupling of more high-frequency frequency points. width.

Furthermore, on the basis of the above-mentioned embodiments, it also includes:

The first radiating unit includes at least one third bent position, and the second radiating unit includes at least one fourth bent position.

The embodiment of the present invention provides an LTE antenna. In the LTE antenna, the bending of the first radiating unit and the second radiating unit is mainly to make the area occupied by the main radiating unit in the PCB circuit board smaller and reasonably planned. space, making the structure of the LTE antenna more compact.

Furthermore, on the basis of the above-mentioned embodiments, it also includes:

The first radiating unit forms a U-shaped radiating unit through the third bending position;

The second radiating unit forms an L-shaped radiating unit through the fourth bending position.

Furthermore, based on the above embodiment, the preset low frequency band is 694-1030 MHz, and the preset high frequency band is 1580-2740 MHz.

An embodiment of the present invention provides an LTE antenna. In the LTE antenna, the first radiation unit is formed into a U shape, and the second radiation unit is formed into an L shape, so that the first radiation unit and the second radiation unit can use the U shape Combined with the L-shape's own structural features, it forms a compact antenna.

In a second aspect, this embodiment provides a mobile terminal, including the LTE antenna described in any of the foregoing embodiments.

As shown in Figure 2, the main radiating unit, coupled microstrip line, and ground plane of the LTE antenna can be fabricated on one side of the PCB circuit board, and then other devices will be integrated on the PCB circuit board integrated with the LTE antenna to realize mobile The integration of various components of the terminal saves space.

Embodiments of the present invention provide a mobile terminal, the mobile terminal includes an LTE antenna, the main radiation unit in the LTE antenna, the coupling microstrip line and the grounding plate are arranged in the same plane, and the reduction of the antenna height makes it possible to apply On the increasingly thinner and lighter terminals. Secondly, the coupled microstrip line of the LTE antenna is connected to the ground plate, one end of the feed unit is connected to the main radiation unit, and the other end is connected to the ground plate to form a loop antenna, which improves the low-frequency impedance and is conducive to widening the bandwidth of the preset low-frequency band. Finally, in the LTE antenna, the coupled microstrip line is connected to the feed unit through the ground plate. Compared with the antenna that sets an independent power supply unit for the coupled microstrip line, the LTE antenna saves the setting of an independent power supply unit, saving space. By adjusting the position and distance between the main radiation unit and the coupling microstrip line in the LTE antenna, an antenna with required bandwidth can be obtained, and an antenna with compact structure, small volume and multiple frequency bands can be obtained.

More specifically, as shown in FIG. 2, a PCB-based built-in LTE multi-band antenna is provided in this embodiment, and its structure includes a main radiation unit 101 (composed of an inverted L unit and a U-shaped microstrip line), The feed unit 102 , the coupled microstrip line 103 and the ground plane 104 .

The LTE antenna has a feed point (located at the feed unit 102 ) and a short-circuit point (located at the connection between the coupled microstrip line and the ground plane), and the feeding method uses coupled feeding.

The main radiating unit of the LTE antenna is an inverted L-shaped radiating unit connected with a U-shaped microstrip line, which generates a corresponding resonance frequency (preset high-frequency band) in the high-frequency band LTE 2500 and DCS 1800 . The antenna coupling microstrip line goes around the upper edge and the right edge of the dielectric plate, and then two microstrip lines are separated at the right edge, one of the long microstrip lines is connected to the ground plate after being bent and folded, and the coupling microstrip line is coupled The low-frequency impedance is improved under the action of the feed, and the microstrip line forms a loop antenna with the ground plate, the main radiation unit, and the feed unit, producing two low-frequency resonant frequencies close to each other, resulting in a large radiation bandwidth, and its resonance The frequency is near LTE700 and GSM900, and the resulting working bandwidth is 694-1030MHz.

According to the principle that the curved monopole antenna can generate double frequency, when the coupled microstrip line generates the corresponding low-frequency resonance frequency, because of its curved and folded shape, it will also form a new resonance frequency at the double frequency. The frequency band generated and the frequency band generated by frequency multiplication are superimposed, so that the antenna obtains a large bandwidth in the high frequency band, which is 1580-2740MHz. Therefore, the antenna feed unit, the main radiating unit, the coupled microstrip line and the grounding plate form a unified whole, which realizes an antenna that meets the requirements of covering 2/3/4G multiple frequency bands and is small in size.

FIG. 3 is a graph of return loss coefficient of the LTE antenna, and FIG. 4 is a graph of antenna gain and radiation efficiency of the LTE antenna. It can be seen from Fig. 3 and Fig. 4 that the return loss coefficient S11 of the LTE antenna in the present embodiment in the preset low frequency band and the preset high frequency band is all less than -6db (wherein, the dotted line in Fig. 3 is the simulation result, realized as Actual measurement results), antenna gain (Gain) and radiation efficiency (Radiation efficiency) all indicate that the LTE antenna structure meets actual requirements.

The PCB-based built-in LTE multi-band antenna structure provided by this embodiment supports the current mobile terminal equipment to meet various Internet access and functional requirements of users, and meets the requirements of 2/3/4G multiple frequency bands, small size, and easy production. The mobile terminal has the application effect of wide adaptability, economy, and simple processing. The LTE antenna is suitable for the interior of the mobile terminal. The antenna structure is divided into four units: the main radiation unit, the feeding unit, the coupling microstrip line and the ground plate. The main radiation unit, the feeding unit and the coupling microstrip line are used to form a loop antenna to Realize the antenna in the frequency band of LTE700, because of the application of this method, the antenna can realize the lower frequency band in a small space (the frequency is inversely proportional to the length of the antenna), and does not need to use an additional dielectric substrate, thereby reducing the height of the antenna.

Compared with the prior art, the advantage of the LTE antenna is that the processing is simpler: the antenna main radiation unit, the feeding unit, the coupling microstrip line and the grounding plate are all on one plane, and the processing of the printed circuit board is simpler. Lower height and wider application range: The antenna does not adopt the method of adding an additional dielectric base when realizing compact structure and multi-band, so its height is much smaller than that of the existing technology, and it is applicable to a wider range of occasions. Lower cost: The antenna is printed on a PCB, because the processing is simple and the material is common, making it cheaper. Higher efficiency and gain: Compared with some existing antennas loaded with impedance elements, the utility model antenna has higher efficiency and higher gain.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present utility model, rather than limit it; Those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not deviate from the essence of the corresponding technical solutions The scope of the technical solutions of the various embodiments of the embodiments of the present utility model.

Claims (8)

1. A kind of LTE antenna, is characterized in that, comprises main radiating unit, feeding unit, coupled microstrip line and ground plate; The main radiating unit, the coupled microstrip line and the grounding plate are arranged in the same plane; The coupled microstrip line is connected to the ground plane; One end of the feed unit is connected to the main radiation unit, and the other end is connected to the ground plate; Wherein, after the feeding unit supplies power to the main radiation unit and the coupled microstrip line, the preset low frequency band and the preset high frequency band are obtained through the frequency coupling effect of the main radiation unit and the coupled microstrip line. frequency band. 2. The LTE antenna according to claim 1, further comprising a PCB circuit board; The main radiation unit, the coupled microstrip line and the grounding plate are arranged on the same side of the PCB circuit board. 3. The LTE antenna according to claim 2, wherein the coupled microstrip line comprises a first microstrip line and a second microstrip line, and the length of the second microstrip line is shorter than that of the first microstrip line. The length of the strip line; One end of the first microstrip line is connected to the ground plane, the other end of the first microstrip line is connected to one end of the second microstrip line, and the other end of the second microstrip line is suspended; The first microstrip line is used to generate a first low-frequency frequency point, the second microstrip line is used to generate a second low-frequency frequency point, and the frequency corresponding to the first low-frequency frequency point is higher than that corresponding to the second low-frequency frequency point Frequency of; Wherein, the preset low-frequency band is obtained through frequency coupling of the first low-frequency frequency point and the second low-frequency frequency point. 4. The LTE antenna according to claim 3, wherein the main radiation unit comprises a first radiation unit and a second radiation unit; The length of the first radiating unit is greater than the length of the second radiating unit, one end of the first radiating unit is connected to one end of the second radiating unit, the first radiating unit and the second radiating unit The other end is suspended; The first radiating unit is used to generate a first high frequency point, the second radiating unit is used to generate a second high frequency point, the frequency corresponding to the first high frequency point is higher than the frequency corresponding to the second high frequency point ; Wherein, the preset high frequency band is obtained through frequency coupling of the first high frequency point and the second high frequency point. 5. The LTE antenna according to claim 4, further comprising: The first microstrip line includes at least one first bending position, and the second microstrip line includes at least one second bending position; The first bending position is used to generate a third high-frequency frequency point, and the second bending position is used to generate a fourth high-frequency frequency point; Wherein, the preset high frequency band is obtained through frequency coupling of the first high frequency point, the second high frequency point, the third high frequency point and the fourth high frequency point. 6. The LTE antenna according to claim 4, further comprising: The first radiating unit includes at least one third bent position, and the second radiating unit includes at least one fourth bent position. 7. The LTE antenna according to claim 6, further comprising: The first radiating unit forms a U-shaped radiating unit through the third bending position; The second radiating unit forms an L-shaped radiating unit through the fourth bending position. 8. A mobile terminal, comprising the LTE antenna according to any one of claims 1-7.