CN114976608B

CN114976608B - Antenna structure and mobile device comprising same

Info

Publication number: CN114976608B
Application number: CN202110211181.2A
Authority: CN
Inventors: 戴志峰; 赖冠勋; 王癸程
Original assignee: Wistron Neweb Corp
Current assignee: Wistron Neweb Corp
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2023-11-14
Anticipated expiration: 2041-02-25
Also published as: CN114976608A

Abstract

An antenna structure and a mobile device comprising the same. The antenna structure comprises a feed-in metal radiator, a first grounding metal radiator, a second grounding metal radiator and a substrate; the feed-in metal radiator comprises a first radiation part, a first connecting part, a second radiation part and a feed-in part; the first radiation part extends from the first side of the open slot along the second direction; the second radiation part is connected with the first radiation part through the first connection part; the feed-in part is connected with the second radiation part and extends along the second direction from the first side of the open slot hole, wherein the feed-in part is provided with a feed-in point; the first grounding metal radiator comprises a first extension part and a first grounding part; the second grounding metal radiator comprises a second extension part and a second grounding part. The antenna structure improves the design of the open slot, increases the frequency band required by the resonance WI-FI6E by coupling the antenna radiator path and the feed point, reduces the number of antennas, lowers the die sinking cost and improves the overall performance of the antenna structure.

Description

Antenna structure and mobile device comprising same

Technical Field

The present invention relates to an antenna structure, and more particularly, to an antenna structure with an improved open slot (open slot) structure for supporting WI-FI6E and a mobile device including the same.

Background

The existing open slot (open slot) antenna architecture does not include a frequency band for WI-FI6E communication, and under the existing antenna architecture, in order to support the frequency band of WI-FI6E, additional space must be added for design.

However, in some electronic products, a narrow bezel design is employed. In such a case, changing the appearance structure would result in the product having to be redesigned, which is not cost-effective.

Therefore, how to improve the structural design under the existing open slot antenna structure so that it can further support the frequency band required by the WIFI 6E (5.925 GHz-7.125 GHz) to overcome the above-mentioned drawbacks has become one of the important issues to be resolved by the industry.

Accordingly, there is a need to provide an antenna structure and a mobile device including the same to solve the above-mentioned problems.

Disclosure of Invention

The present invention is an antenna structure with an improved open slot (open slot) architecture to support WI-FI 6E.

The present invention provides an antenna structure disposed on a metal back cover, wherein the metal back cover has an open slot, the open slot has an open end and a closed end arranged along a first direction, and a first side and a second side arranged along a second direction, and the first direction is perpendicular to the second direction. The antenna structure comprises a feed-in metal radiator, a first grounding metal radiator, a second grounding metal radiator and a substrate. The feed-in metal radiator is arranged on the first side of the open slot hole and comprises a first radiation part, a first connecting part, a second radiation part and a feed-in part. The first radiating portion extends from the first side of the open slot along the second direction and overlaps a first portion of the open slot. The first connecting portion is connected to the first radiating portion. The second radiation part is connected to the first radiation part through the first connection part, wherein the first radiation part, the first connection part and the second radiation part are sequentially arranged along the first direction. The feed-in part is connected to the second radiation part, extends along the second direction from the first side of the open slot and overlaps with a second part of the open slot, wherein the feed-in part is provided with a feed-in point for coupling to a signal source. The first grounding metal radiator comprises a first extension part and a first grounding part. The first extension part extends from the second side of the open slot along the second direction and overlaps with a second part of the open slot. The first grounding part is coupled with the first extension part and a grounding potential. The second grounding metal radiator comprises a second extension part and a second grounding part. The second extension part extends from the second side of the open slot along the second direction, overlaps with a fourth part of the open slot, and is separated from the first extension part by a first gap. The second grounding part is coupled with the second extension part, the first grounding part and the ground potential. Wherein the feed-in metal radiator, the first grounding metal radiator and the second grounding metal radiator are all arranged on the substrate.

The present invention addresses the deficiencies of the prior art by providing a mobile device that includes a metal back cover and an antenna structure. The metal back cover is provided with an open slot, the open slot is provided with an open end and a closed end which are arranged along a first direction, and a first side and a second side which are arranged along a second direction, and the first direction is perpendicular to the second direction. The antenna structure comprises a feed-in metal radiator, a first grounding metal radiator, a second grounding metal radiator and a substrate. The feed-in metal radiator is arranged on the first side of the open slot hole and comprises a first radiation part, a first connecting part, a second radiation part and a feed-in part. The first radiating portion extends from the first side of the open slot along the second direction and overlaps a first portion of the open slot. The first connecting portion is connected to the first radiating portion. The second radiation part is connected to the first radiation part through the first connection part, wherein the first radiation part, the first connection part and the second radiation part are sequentially arranged along the first direction. The feed-in part is connected to the second radiation part, extends along the second direction from the first side of the open slot and overlaps with a second part of the open slot, wherein the feed-in part is provided with a feed-in point for coupling to a signal source. The first grounding metal radiator comprises a first extension part and a first grounding part. The first extension part extends from the second side of the open slot along the second direction and overlaps with the second part of the open slot. The first grounding part is coupled with the first extension part and a grounding potential. The second grounding metal radiator comprises a second extension part and a second grounding part. The second extension part extends from the second side of the open slot along the second direction, overlaps with a fourth part of the open slot, and is separated from the first extension part by a first gap. The second grounding part is coupled with the second extension part, the first grounding part and the ground potential. Wherein the feed-in metal radiator, the first grounding metal radiator and the second grounding metal radiator are all arranged on the substrate.

The antenna structure provided by the invention has the beneficial effects that the design concept of the open slot hole is improved, the coupling of the antenna radiator path and the feed-in point is increased, and the frequency band required by the resonance WI-FI6E (5.925 GHz-7.125 GHz) is increased, so that the design of a communication product does not need to be additionally increased for the communication frequency band of the WI-FI6E, and the design of the antenna is not additionally modified on a mechanism, thereby reducing the number of used antennas and the die sinking cost.

Furthermore, on the basis of the antenna structure provided by the invention, on the premise of keeping the gap between the first extension part and the second extension part, the overall performance of the antenna structure can be further improved by adjusting the distance between the second grounding metal radiator and the feed-in part and adjusting the size of the second grounding metal radiator in the first direction.

For a further understanding of the nature and the technical aspects of the present invention, reference should be made to the following detailed description of the invention and the accompanying drawings, which are provided for purposes of reference only and are not intended to limit the invention.

Drawings

Fig. 1 is a schematic top view of an antenna structure according to a first embodiment of the present invention.

Fig. 2 is a schematic top view of an antenna structure according to a second embodiment of the present invention.

Fig. 3 is a graph of voltage standing wave ratios (Voltage standing wave ratio, VSWR) of the antenna structure of fig. 2 at different frequencies.

Fig. 4 is a graph of VSWR at a different frequency and a different fifth predetermined length for the antenna structure of fig. 2.

Fig. 5 is a graph of VSWR at a different frequency and a different sixth predetermined length for the antenna structure of fig. 2.

Description of main reference numerals:

1. metal back cover

2. Feed-in metal radiator

3. First grounding metal radiator

4. Second grounding metal radiator

5. Substrate board

10. Open slot

20. A first radiation part

21. First connecting part

22. A second radiation part

23. Feed-in part

30. First extension part

31. First grounding part

32. Third extension part

40. Second extension part

41. Second grounding part

42. Second connecting part

101. First side

102. Second side

A1 First region

CL closed end

D1 First direction

D2 Second direction

FP feed point

G1 Ground potential

GP1 first gap

GP2 second gap

GP3 third gap

GP4 fourth gap

L1 first predetermined length

L2 second predetermined length

L3 third predetermined length

L4 fourth predetermined length

L5 fifth predetermined length

L6 sixth predetermined length

OP open end

P1 first part

P2 second part

P21 first subsection

P22 second subsection

P4 fourth part

P5 fifth part

SS signal source

U-shaped antenna structure

Detailed Description

The following specific embodiments are provided to illustrate the embodiments of the present invention related to an antenna structure and a mobile device including the same, and those skilled in the art will appreciate the advantages and effects of the present invention from the disclosure herein. The invention is capable of other and different embodiments and its several details are capable of modification and variation in various respects, all from the point of view and application, all without departing from the spirit of the present invention. The drawings of the present invention are merely schematic illustrations, and are not intended to be drawn to actual dimensions. The following embodiments will further illustrate the related art content of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention. In addition, the term "or" as used herein shall include any one or combination of more of the associated listed items as the case may be.

First embodiment

First, referring to fig. 1, fig. 1 is a schematic top view of a mobile device according to a first embodiment of the invention. The first embodiment of the present invention provides a mobile device, which includes a metal back cover 1 and an antenna structure U, wherein the antenna structure U includes a feed-in metal radiator 2, a first grounding metal radiator 3, a second grounding metal radiator 4 and a substrate 5. The metal back cover 1, the feed-in metal radiator 2, the first grounding metal radiator 3 and the second grounding metal radiator 4 may be made of metal materials, for example: copper, silver, aluminum, iron, or alloys thereof. To avoid visual obscuring and to facilitate the reader's understanding of the invention, in fig. 1, the substrate 5 is shown as a transparent element, the substrate 5 may be an FR4 (frame reflector 4) substrate, a printed circuit board (Printed Circuit Board, PCB), or a flexible circuit board (Flexible Circuit Board, FCB). The substrate 5 is disposed on the metal back cover 1, and the feeding metal radiator 2, the first grounding metal radiator 3, and the second grounding metal radiator 4 are disposed on the substrate 5.

The metal back cover 1 may be a metal housing for a mobile device. In some embodiments, the metal back cover 1 is a metal top cover of a notebook computer or a metal back cover of a tablet computer, but is not limited thereto. The metal back cover 1 has an open slot 10, the open slot 10 has an open end OP and a closed end CL arranged along a first direction D1, and a first side 101 and a second side 102 arranged along a second direction D2, and the first direction D1 is perpendicular to the second direction D2. The antenna structure U may also comprise a non-conductive material for filling the open slot 10.

The feeding metal radiator 2 is disposed on a first side 101 of the open slot 10, and includes a first radiating portion 20, a first connecting portion 21, a second radiating portion 22, and a feeding portion 23. As shown in fig. 1, the first radiation portion 20 extends from the first side 101 of the open slot 10 along the second direction D2 and overlaps the first portion P1 (diagonally filled portion in fig. 1) of the open slot 10 adjacent to the open end OP.

The first connection portion 21 is connected to the first radiation portion 20, and the second radiation portion 22 is connected to the first radiation portion 20 through the first connection portion 21, wherein the first radiation portion 20, the first connection portion 21, and the second radiation portion 22 are sequentially arranged along the first direction D1.

Further, the feeding element 23 is connected to the second radiation element 22, extends along the second direction D2 from the first side 101 of the open slot 10, and overlaps a second portion (not specifically shown) of the open slot 10 adjacent to the closed end CL, wherein the feeding element 23 has a feeding point FP for coupling to the signal source SS, and a vertical projection of the feeding point FP on the substrate 5 is located in a first area A1 of the open slot 10 adjacent to the closed end CL.

It should be noted that, the open slot 10 has a first predetermined length L1 in the first direction D1, and the length of the first predetermined length L1 may be between 15mm and 20mm under different setting conditions. In the first direction D1, the first region A1 may be positioned between the closed end CL and about half of the first predetermined length L1 from the closed end CL. In the second direction D2, the first area A1 extends beyond the first side 101 and the second side 102 of the open slot 10 by a second predetermined length L2. The feed point FP can adjust the voltage standing wave ratio of the frequency band from 2.4GHz to 2.5GHz in the first area A1 in the position of the first direction D1, and can adjust the gain of the antenna in the position of the second direction D2.

In detail, the first area A1 is an energy feeding point of the antenna design, the feeding metal radiator 2 is a signal feeding position, and energy enters from a feeding point FP of the feeding metal radiator 2, and the feeding metal radiator 2 is coupled with the opening slot 10 to resonate to generate radiation energy of a first frequency band and a second frequency band. The first frequency band may be a frequency band from 2.4GHz to 2.5GHz, and the second frequency band may be a higher order mode of the first frequency band and may be a frequency band from 5GHz to 8 GHz.

On the other hand, the first grounded metal radiator 3 includes a first extension portion 30 and a first grounding portion 31. The first extension portion 30 extends from the second side 102 of the open slot 10 along the opposite direction of the second direction D2 and overlaps the second portion P2 of the open slot 10, and the first ground portion 31 is coupled to the first extension portion 30 and a ground potential G1.

In this embodiment, the feeding metal radiator 2 is coupled with the first grounding metal radiator 3 to resonate to generate a third frequency band, and the bandwidth and impedance matching between 5.15GHz and 5.85GHz can be specifically adjusted by the first grounding metal radiator 3 corresponding to 5.15GHz to 5.85 GHz. The lower edge of the first ground portion 31 of the first ground metal radiator 3 may be partially or entirely connected to the ground potential G1 by soldering with a copper foil pad of the substrate 5 (for example, may be a PCB). As shown in fig. 1, even if the first extension 30 is a simple rectangle, the bandwidth and impedance matching between 5.15GHz and 5.85GHz can be adjusted.

Furthermore, the second grounded metal radiator 4 includes a second extension portion 40 and a second grounding portion 41. The second extension 40 extends from the second side 102 of the open slot 10 in the opposite direction of the second direction D2, overlaps the fourth portion P4 of the open slot 10, and is separated from the first extension 30 by a first gap GP1. The second grounding portion 41 is coupled to the second extension portion 40, the first grounding portion 31 and the ground potential G1.

For this part, the feed metal radiator 2 and the second ground metal radiator 4 are coupled to resonate to generate a fourth frequency band, e.g., a mode of WI-FI6E, and the bandwidth and impedance matching of 5.925GHz to 7.125GHz can be adjusted by changing the coupling relationship between the second ground metal radiator 4 and the feed point FP.

The lower edge of the second ground portion 41 of the second ground metal radiator 4 may be partially or entirely connected to the ground potential G1 by soldering with a copper foil pad of the substrate 5 (for example, may be a PCB).

As shown in fig. 1, if the length of the second grounding metal radiator 4 in the first direction D1 is adjusted, the bandwidth of 5.925GHz to 7.125GHz can be adjusted, which will be described in the following embodiments. In the above-described embodiments, the first to fourth frequency bands have a frequency band range from small to large as described.

Therefore, in the above embodiment, it can be seen that the antenna structure U provided by the present invention improves the design concept of the open slot 10, increases the coupling between the antenna radiator path and the feed point FP, and resonates the frequency band required by the WI-FI6E (5.925 GHz-7.125 GHz) specification, so that the communication product is not required to additionally increase the antenna design for the communication frequency band of WI-FI6E in design, and is not required to make additional modification on the mechanism, thereby reducing the number of antennas used and reducing the die sinking cost.

Second embodiment

First, referring to fig. 2, fig. 2 is a schematic top view of an antenna structure according to a second embodiment of the invention. As can be seen from comparing fig. 2 and fig. 1, the greatest difference between the second embodiment and the first embodiment is that the overall performance of the antenna structure U can be further improved by adjusting the structures of the first grounding metal radiator 3 and the second grounding metal radiator 4 of the antenna structure U provided by the second embodiment while maintaining the gap between the first extension portion 30 and the second extension portion 40. In addition, it should be noted that other structural features shown in the second embodiment are similar to those of the foregoing embodiments, and will not be described herein. In addition, some of the designations are omitted for clarity of the drawings.

As mentioned above, in the second embodiment, the first grounding metal radiator 3 further includes the third extension portion 32, which is located between the first extension portion 30 and the second extension portion 40. The third extension 32 is connected to the first grounding portion 31, extends from the second side 102 of the open slot 10 along the opposite direction of the second direction D2, and overlaps the fifth portion P5 of the open slot 10. The third extension portion 32 is separated from the first extension portion 30 by a second gap GP2, and is separated from the second extension portion 40 by a third gap GP3. The third gap GP3 is in the range of 0.2mm to 0.8 mm. When the first grounding metal radiator 3 is adjusted to widen the third gap GP3, the mode of 5.15GHz to 5.85GHz is mainly affected, and the mode of WIFI 6E is indirectly affected.

On the other hand, the first extension 30 also overlaps the first and second sub-portions P21 and P22 of the second portion P2 of the open slot 10, wherein the first sub-portion P21 completely spans the open slot 10 and the second sub-portion P22 partially spans the open slot 10. By changing the shape of the first extension portion 30, the bandwidth and impedance matching of the antenna structure U between 5.15GHz and 5.85GHz can be adjusted.

In addition, the second grounding metal radiator 4 further includes a second connection portion 42, the second grounding portion 41 is connected to the second extension portion 40 through the second connection portion 42, and an unconnected portion between the second grounding portion 41 and the second extension portion 40 separates the second grounding portion 41 from the second extension portion 40 by a fourth gap GP4. In detail, the fourth gap GP4 forms a notch in the second grounding metal radiator 4, and the current on the second grounding metal radiator 4 can be changed by adjusting the size of the fourth gap GP4, so as to adjust the mode of the WIFI 6E.

In addition, the length of the first grounding portion 31 connected to the second grounding portion 41 has a third predetermined length L3, the second grounding metal radiator 4 has a fourth predetermined length L4 in the second direction D2, and the third predetermined length L3 is less than or equal to half of the fourth predetermined length L4. In other words, the ratio of the third predetermined length L3 to the fourth predetermined length L4 may be less than or equal to 1:2.

Furthermore, the length of the second grounding metal radiator 4 in the second direction D2 may be changed to change the fifth predetermined length L5 of the feeding element 23 and the second extension 40. Preferably, the fifth predetermined length L5 is in the range of 0.1mm to 3mm, and the fifth predetermined length L5 will determine the coupling amount of the second grounding metal radiator 4 and the feeding metal radiator 2 and affect the fourth frequency band, i.e. the frequency band required by WI-FI6E (5.925 GHz to 7.125 GHz) specification.

Further, the second grounded metal radiator 4 has a sixth predetermined length L6 in the first direction D1, which is in the range of 7mm to 15mm. Changing the sixth predetermined length L6 in the first direction D1 while maintaining the third gap GP3 will affect the resonant frequency of the antenna structure U.

Next, referring to fig. 3, fig. 3 is a graph showing voltage standing wave ratio (Voltage standing wave ratio, VSWR) of the antenna structure of fig. 2 at different frequencies. As can be seen from the figure, the antenna structure U of the present invention has good VSWR performance in the first frequency band (2.4 GHz to 2.5GHz band), the second frequency band (5 GHz to 8GHz band), the third frequency band (5.15 GHz to 5.85GHz band) and the fourth frequency band (WI-FI 6E,5.925GHz to 7.125GHz band). And particularly for the frequency band of about 5.04GHz to 7.12GHz, the VSWR can reach below 2.

Referring further to fig. 4, fig. 4 is a graph of VSWR at a different frequency and a different fifth predetermined length L5 for the antenna structure of fig. 2. In fig. 4, the frequency interval of 5.925GHz to 7.125GHz in fig. 3 is enlarged, and the fifth predetermined length L5 employed from fig. 3 is varied from 0.2mm to 0.7mm and 1.2mm. As can be seen from fig. 4, when the fifth predetermined length L5 of the feeding portion 23 and the second extension portion 40 is larger, the mode from 5.925GHz to 7.125GHz has an effect of matching and shifting, because the coupling amount between the feeding metal radiator 2 and the second grounding metal radiator 4 is reduced due to the larger fifth predetermined length L5, thereby affecting the frequency from 5.925GHz to 7.125GHz resonating out by the second grounding metal radiator 4. In fig. 4, it can also be seen that the preferred adjustment range of the fifth predetermined length L5 is from 0.1mm to 1.5mm, but the adjustment range of the fifth predetermined length L5 is from 0.1mm to 3mm according to different requirements.

Referring further to fig. 5, fig. 5 is a graph of VSWR at a different frequency and a different sixth predetermined length L6 for the antenna structure of fig. 2. In fig. 5, the frequency interval of 5.925GHz to 7.125GHz in fig. 3 is also exaggerated, and the sixth predetermined length L6 employed from fig. 3 is varied from 9.1mm to 10.1mm, 11.1mm, and 12.1mm. As can be seen from fig. 5, when the sixth predetermined length L6 of the second grounding metal radiator 4 in the first direction D1 is changed, the resonant frequency of the antenna structure U is affected, particularly, the mode between 5.925GHz and 7.125GHz is shifted, because the resonant wavelength of the antenna structure U is longer, and thus the frequency between 5.925GHz and 7.125GHz of the second grounding metal radiator 4 is affected. In fig. 5, it can also be seen that the sixth predetermined length L6 can be preferably adjusted in a range from 9.1mm to 12.1mm, but the sixth predetermined length L6 can be adjusted in a range from 7mm to 15mm according to different requirements.

Advantageous effects of the embodiment

The above disclosure is only a preferred embodiment of the present invention and is not intended to limit the scope of the claims, so that all equivalent technical variations made by the present description and drawings are included in the scope of the claims.

Claims

1. An antenna structure disposed on a metal back cover, the metal back cover having an open slot with an open end and a closed end disposed along a first direction, and a first side and a second side disposed along a second direction, the first direction being perpendicular to the second direction, the antenna structure comprising:

the feed-in metal radiator is arranged on the first side of the opening slot hole and comprises:

a first radiating portion extending from the first side of the open slot along the second direction and overlapping a first portion of the open slot;

a first connecting part connected to the first radiating part;

the second radiation part is connected with the first radiation part through the first connection part, wherein the first radiation part, the first connection part and the second radiation part are sequentially arranged along the first direction; and

a feed-in part connected to the second radiation part, extending from the first side of the open slot along the second direction and overlapping a second part of the open slot, wherein the feed-in part has a feed-in point for coupling to a signal source;

a first grounded metal radiator, the first grounded metal radiator comprising:

a first extension portion extending from the second side of the open slot along the second direction and overlapping a second portion of the open slot; and

a first grounding part coupled to the first extension part and a ground potential;

a second grounded metal radiator comprising:

a second extending portion extending from the second side of the open slot along the second direction, overlapping a fourth portion of the open slot, and separated from the first extending portion by a first gap; and

the second grounding part is coupled with the second extension part, the first grounding part and the ground potential; and

the first grounding metal radiator and the second grounding metal radiator are arranged on the substrate.

2. The antenna structure of claim 1, wherein the feed metal radiator and the open slot produce a first frequency band and a second frequency band, the feed metal radiator and the first ground metal radiator produce a third frequency band, and the feed metal radiator and the second ground metal radiator produce a fourth frequency band.

3. The antenna structure of claim 2, wherein the vertical projection of the feed point on the substrate is located in a first area of the open slot, the open slot has a first predetermined length in the first direction, and the first area is located within the open slot at a distance from half of the closed end by the first predetermined length.

4. The antenna structure of claim 3, wherein the first region extends beyond the first side and the second side in the first direction by a second predetermined length, respectively.

5. The antenna structure of claim 4, wherein the first predetermined length is in the range of 15mm to 20mm.

6. The antenna structure of claim 4, wherein the second predetermined length is in the range of 1mm to 3mm.

7. The antenna structure of claim 2, wherein the first grounding metal radiator further comprises a third extension portion, the third extension portion is located between the first extension portion and the second extension portion, connected to the first grounding portion, extends from the second side of the open slot along the second direction and overlaps with a fifth portion of the open slot,

the third extension part is separated from the first extension part by a second gap, and is separated from the second extension part by a third gap.

8. The antenna structure of claim 7, wherein the third gap is in a range of 0.2mm to 0.8 mm.

9. The antenna structure of claim 2, wherein the length of the first grounding portion and the second grounding portion is a third predetermined length, the second grounding metal radiator is a fourth predetermined length in the first direction, and the third predetermined length is less than or equal to half of the fourth predetermined length.

10. The antenna structure of claim 2, wherein the second ground portion is connected to the second extension portion through a second connection portion, and an unconnected portion between the second ground portion and the second extension portion separates the second ground portion from the second extension portion by a fourth gap.

11. The antenna structure of claim 2, wherein the first extension further overlaps a first sub-portion and a second sub-portion of the second portion of the open slot, wherein the first sub-portion completely spans the open slot and the second sub-portion partially spans the open slot.

12. The antenna structure of claim 2, wherein the feeding element is separated from the second extension by a fifth predetermined length.

13. The antenna structure of claim 12, wherein the fifth predetermined length is in the range of 0.1mm to 3mm.

14. The antenna structure of claim 2, wherein the second grounded metal radiator has a sixth predetermined length in the first direction, the sixth predetermined length being in a range of 7mm to 15mm.

15. A mobile device, the mobile device comprising:

a metal back cover having an open slot with an open end and a closed end arranged along a first direction, and a first side and a second side arranged along a second direction, wherein the first direction is perpendicular to the second direction; and

an antenna structure, the antenna structure comprising:

a first connecting part connected to the first radiating part;

a first grounded metal radiator, the first grounded metal radiator comprising:

a second grounded metal radiator comprising:

16. The mobile device of claim 15, wherein the vertical projection of the feed point on the substrate is located in a first area of the open slot, the open slot has a first predetermined length in the first direction, and the first area is located within the open slot half the first predetermined length from the closed end.