阅读说明：本技术 一种终端t天线及移动终端 (Terminal T antenna and mobile terminal ) 是由 马磊 于 2021-07-15 设计创作，主要内容包括：本发明提供一种终端T天线及移动终端,所述终端T天线包括金属地板、金属辐射结构和金属连接结构；所述金属地板和所述金属辐射结构间隔设置；所述金属辐射结构具有地点和馈电点,所述金属连接结构一端与所述地点相连,另一端与所述金属地板相连。通过金属连接结构连接金属辐射结构和金属地板,使得金属辐射结构和金属地板上的电磁场边界条件发生改变,形成了更为均匀的电流分布,从而提高了天线的辐射效率,解决了现有终端天线辐射效率较低的问题。(The invention provides a terminal T antenna and a mobile terminal, wherein the terminal T antenna comprises a metal floor, a metal radiation structure and a metal connection structure; the metal floor and the metal radiation structure are arranged at intervals; the metal radiation structure is provided with a place and a feed point, one end of the metal connecting structure is connected with the place, and the other end of the metal connecting structure is connected with the metal floor. The metal radiation structure and the metal floor are connected through the metal connecting structure, so that electromagnetic field boundary conditions on the metal radiation structure and the metal floor are changed, more uniform current distribution is formed, the radiation efficiency of the antenna is improved, and the problem that the radiation efficiency of the existing terminal antenna is lower is solved.)

1. A terminal T antenna is characterized by comprising a metal floor, a metal radiation structure and a metal connection structure; the metal floor and the metal radiation structure are arranged at intervals; the metal radiation structure is provided with a place and a feed point, one end of the metal connecting structure is connected with the place, and the other end of the metal connecting structure is connected with the metal floor.

2. The T-antenna of claim 1, wherein a dielectric is filled between the metal ground and the metal radiating structure.

3. The T-antenna of claim 2, wherein the dielectric has a dielectric constant of 7 and a dielectric loss tangent of 0.07.

4. The terminal T-antenna according to claim 1, wherein the metallic radiating structure is elongated and is disposed parallel to the short side of the metallic floor.

5. The T-antenna of claim 4, wherein the metallic radiating structure is spaced from the metallic floor by 3 ± 0.5 mm.

6. Terminal T-antenna according to claim 4, characterised in that the length of the metallic radiating structure is smaller than the length of the short side of the metallic floor.

7. Terminal T-antenna according to claim 6, characterised in that one end of the metallic radiating structure is flush with one end of the short side of the metallic floor.

8. The T-antenna of claim 7, wherein said metallic radiating structure is 76 ± 3mm long; the place is positioned at the position of 40 +/-2 mm of one end of the metal radiation structure, which is flush with the metal floor; the feeding point is 4.5 +/-0.5 mm away from the place and is arranged close to one end which is flush with each other.

9. The T-antenna of claim 1, wherein the width of the metallic connection structure is 0.5 ± 0.1 mm.

10. A mobile terminal, characterized in that it comprises a terminal T antenna according to any of claims 1 to 9.

Technical Field

The invention relates to the technical field of wireless communication, in particular to a terminal T antenna and a mobile terminal.

Background

With the development of wireless communication technology, people not only want to have higher quality of wireless communication, but also want to have smaller occupied space of the device. One of the key devices for determining the quality of wireless communication is an antenna, the quality of wireless communication is directly affected by the radiation efficiency of the antenna, the radiation efficiency of the antenna is proportional to the antenna clearance, and if the antenna clearance is smaller, the radiation efficiency of the antenna is lower, which is contradictory to the desire of small equipment volume.

In order to minimize the occupied volume of the device while ensuring the performance of the antenna, research and development personnel have made various changes to the structure of the antenna. Such as a T-antenna, is a metal strip antenna grounded in the middle of the metal strip to form a T-like metal strip shape, which has low requirement for headroom, good radiation efficiency and wide bandwidth. However, the efficiency of the corresponding resonant frequency point of the conventional T antenna cannot be optimized on the premise of not changing the antenna structure, so that the performance of the terminal antenna is difficult to meet the actual requirement.

Disclosure of Invention

The invention aims to provide a terminal T antenna and a mobile terminal, and aims to solve the problem that the existing terminal antenna is low in radiation efficiency.

In order to solve the technical problem, the invention provides a terminal T antenna, which comprises a metal floor, a metal radiation structure and a metal connection structure; the metal floor and the metal radiation structure are arranged at intervals; the metal radiation structure is provided with a place and a feed point, one end of the metal connecting structure is connected with the place, and the other end of the metal connecting structure is connected with the metal floor.

Optionally, in the terminal T antenna, a medium is filled between the metal floor and the metal radiation structure.

Optionally, in the terminal T antenna, the dielectric constant of the medium is 7, and the dielectric loss tangent is 0.07.

Optionally, in the terminal T antenna, the metal radiation structure is in a long strip shape, and the metal radiation structure is parallel to the short side of the metal floor.

Optionally, in the terminal T antenna, a distance between the metal radiation structure and the metal floor is 3 ± 0.5 mm.

Optionally, in the terminal T antenna, a length of the metal radiation structure is smaller than a length of a short side of the metal floor.

Optionally, in the terminal T antenna, one end of the metal radiation structure is flush with one end of the short side of the metal floor.

Optionally, in the terminal T antenna, the length of the metal radiation structure is 76 ± 3 mm; the place is positioned at the position of 40 +/-2 mm of one end of the metal radiation structure, which is flush with the metal floor; the feeding point is 4.5 +/-0.5 mm away from the place and is arranged close to one end which is flush with each other.

Optionally, in the terminal T antenna, the width of the metal connection structure is 0.5 ± 0.1 mm.

In order to solve the above technical problem, the present invention further provides a mobile terminal, including the terminal T antenna as described in any one of the above.

The invention provides a terminal T antenna and a mobile terminal, wherein the terminal T antenna comprises a metal floor, a metal radiation structure and a metal connection structure; the metal floor and the metal radiation structure are arranged at intervals; the metal radiation structure is provided with a place and a feed point, one end of the metal connecting structure is connected with the place, and the other end of the metal connecting structure is connected with the metal floor. The metal radiation structure and the metal floor are connected through the metal connecting structure, so that electromagnetic field boundary conditions on the metal radiation structure and the metal floor are changed, more uniform current distribution is formed, the radiation efficiency of the antenna is improved, and the problem that the radiation efficiency of the existing terminal antenna is lower is solved.

Drawings

Fig. 1 is a schematic structural diagram of a terminal T antenna provided in this embodiment;

fig. 2 is a schematic size diagram of the terminal T antenna provided in this embodiment;

fig. 3 is a diagram of a simulation result of S parameters of the T antenna of the terminal according to this embodiment;

FIG. 4 is a diagram showing S parameter simulation results of a comparison group of terminal T antennas without metal connection structures;

fig. 5 is a diagram of a simulation result of a surface current of the terminal T antenna provided in this embodiment;

fig. 6 is a diagram showing a simulation result of a surface current of a terminal T antenna of a comparison group without a metal connection structure;

wherein the reference numerals are as follows:

110-metal floor; 120-metal radiating structure; 121-feeding point 130-metal connection structure; 140-a medium;

l-the length of the metal radiating structure; d-distance of the metal connection structure from the flush end; s-distance between feed point and metal connection structure; w-thickness of the medium (spacing between metal floor and metal radiating structure).

Detailed Description

The terminal T antenna and the mobile terminal according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the accompanying drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The present embodiment provides a terminal T antenna, as shown in fig. 1, the terminal T antenna includes a metal floor 110, a metal radiation structure 120, and a metal connection structure 130; the metal floor 110 and the metal radiation structure 120 are arranged at intervals; the metal radiating structure 120 has a ground point and a feeding point 121, and the metal connecting structure 130 has one end connected to the ground point and the other end connected to the metal floor 110.

The terminal T antenna that this embodiment provided connects metal radiation structure and metal floor through metal connection structure for the electromagnetic field boundary condition on metal radiation structure and the metal floor changes, has formed more even current distribution, thereby has improved the radiation efficiency of antenna, has solved the lower problem of current terminal antenna radiation efficiency.

Preferably, in the present embodiment, a medium 140 is filled between the metal floor 110 and the metal radiation structure 120. Specifically, the dielectric constant of the dielectric 140 is 7, and the dielectric loss tangent is 0.07. The specific material of the medium can be granite, limestone, dolomite, isocyanate, carbon and the like.

Further, in this embodiment, the metal radiation structure 120 is in a long shape, and the metal radiation structure 120 is disposed in parallel with the short side of the metal floor 110. Because the feeding point 121 is disposed on the metal radiation structure 120, and there is electromagnetic coupling between the metal radiation structure 120 and the metal floor 110, the two are disposed in parallel, so that the coupling efficiency between the two can be better excited, thereby improving the radiation performance of the antenna.

Preferably, the spacing between the metal radiating structure 120 and the metal floor 110 is 3 ± 0.5mm, i.e., W is 3 ± 0.5 mm. As a result, strong electromagnetic coupling can be excited between the metal radiation structure 120 and the metal floor 110, so that the radiation efficiency of the antenna can be improved.

In consideration of the cost of the antenna and the applied mobile terminal structure, in the present embodiment, the length of the metal radiating structure 120 is smaller than the length of the short side of the metal floor 110. This ensures that the current is distributed over the metal radiation structure 120, and the current excited by the metal ground 110 can be distributed over the metal radiation structure 120.

In this embodiment, one end of the metal radiating structure 120 is flush with one end of the short side of the metal floor 110. As shown in fig. 1, the right end of the metal radiating structure 120 is flush with the right end of the short side of the metal floor 110.

Further, in the present embodiment, as shown in fig. 2, the length L of the metal radiation structure 120 is 76 ± 3 mm; the location is located at 40 +/-2 mm of one end of the metal radiation structure 120, which is flush with the metal floor 110, namely D is 40 +/-2 mm; the feeding point 121 is 4.5 ± 0.5mm from the location, i.e. S is 4.5 ± 0.5mm, and the feeding point 121 is disposed near the end that is flush with the end.

And, in the present embodiment, the width of the metal connection structure 130 may be 0.5 ± 0.1 mm. The width of the metal connection structure 130 is not too wide, so that the current can be concentrated to the ground, and the radiation efficiency of the antenna can be improved.

Hereinafter, a specific embodiment of the present invention will be described to show that the T antenna of the terminal has higher efficiency than the conventional antenna.

As shown in fig. 2, the metal floor 110 has a size of 150mm × 80 mm. The metal radiating structures 120 are parallel to the short sides of the metal floor 110 and spaced 3mm apart. The length of the metallic radiating structure 120 is 76 mm. A dielectric having a dielectric constant of 7 is filled between the metal floor 110 and the metal radiating structure 120. The metal floor 110 is flush with the right end of the metal radiation structure 120, and the metal radiation structure 120 is provided with a place at a distance of 40mm from the right end, and the place is connected with the metal floor 110 through a metal connecting structure 130. The width of the metal connection structure 130 is 0.5 mm. A feeding point 121 is provided 4.5mm to the right of the spot.

In this embodiment, the metal floor 110, the metal radiating structure 120 and the metal connecting structure 130 are made of copper.

The S-parameter simulation was performed with this terminal T antenna, and the obtained results are shown in fig. 3. As can be seen from fig. 3, the radiation efficiency of the antenna in the resonance frequency reaches-3 dB, and the total efficiency also reaches-5 dB in the band.

For comparison, the metal connection structure 130 in the terminal T antenna is removed, and the other parameters are not changed, and the S-parameter simulation is performed again, and the obtained result is shown in fig. 4. As can be seen from fig. 4, the radiation efficiency of the antenna without the metal connection structure is less than-5 dB in the band, and the total radiation efficiency reaches-7 dB at the lowest.

As can be seen from comparison between fig. 3 and fig. 4, the terminal T antenna with the metal connection structure provided by the present embodiment has higher radiation efficiency.

In order to clarify why the terminal T antenna provided by the present invention has higher radiation efficiency after adding the metal connection structure, surface current distribution simulations were again performed on the terminal T antenna provided by the present embodiment and the antennas of the comparison group.

The simulation result of the surface current distribution of the terminal T antenna provided in this embodiment is shown in fig. 5, and the simulation result of the surface current distribution of the antenna without the metal connection structure is shown in fig. 6. As can be seen from fig. 5 and 6, the current distribution of the T-terminal antenna provided in this embodiment is significantly different from that of the antenna without the metal connection structure in the comparison group, and the current of the antenna without the metal connection structure is concentrated on the right side, whereas the current distribution of the T-terminal antenna provided in this embodiment is relatively even. Generally speaking, the less concentrated the current distribution, the higher the radiation efficiency of the antenna, so the terminal T antenna provided by the embodiment can obtain higher radiation efficiency.

The embodiment also provides a mobile terminal, which comprises the terminal T antenna provided by the embodiment. The mobile terminal includes, but is not limited to, mobile communication devices such as mobile phones and tablets.

In summary, in the terminal T antenna and the mobile terminal provided in this embodiment, the terminal T antenna includes a metal floor, a metal radiation structure, and a metal connection structure; the metal floor and the metal radiation structure are arranged at intervals; the metal radiation structure is provided with a place and a feed point, one end of the metal connecting structure is connected with the place, and the other end of the metal connecting structure is connected with the metal floor. The metal radiation structure and the metal floor are connected through the metal connecting structure, so that electromagnetic field boundary conditions on the metal radiation structure and the metal floor are changed, more uniform current distribution is formed, the radiation efficiency of the antenna is improved, and the problem that the radiation efficiency of the existing terminal antenna is lower is solved.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.