TW201733203A - Antenna structure and wireless communication device with same - Google Patents

Abstract

The invention relates to an antenna structure including a metallic frame and a stub antenna. The metallic frame defines a slot and two slits. The two slits are positioned at two ends of the slot and are perpendicular to the slot. The slot and the two slits divide the metallic frame into a first portion and a second portion. The slot and two slits cooperatively form the first portion. The first portion forms a radiating body of the antenna and is grounded through the second portion. The stub antenna is positioned in the metallic frame and is spaced from the radiating body.

Description

Antenna structure and wireless communication device having the same

The invention relates to an antenna structure and a wireless communication device having the same.

With the advancement of wireless communication technology, wireless communication devices continue to develop toward a thin and light trend, and consumers are increasingly demanding the appearance and performance of wireless communication devices. Most wireless communication devices currently have a Global Positioning System (GPS) function to assist drivers in understanding road conditions, location, direction, speed, and the like. In terms of antenna design, the GPS antenna is usually designed at the top of the wireless communication device, so that the strongest energy of the antenna is mainly concentrated in the lower half of the stadium type, thereby affecting the transmission and reception performance of the antenna.

In view of this, it is necessary to provide an antenna structure that can effectively improve the transmission and reception performance of the antenna.

In addition, it is also necessary to provide a wireless communication device having the antenna structure.

An antenna structure includes a metal frame and a residual antenna. The metal frame is provided with a slot and two break points. The two break points are respectively disposed at two ends of the slot and perpendicular to the slot. The slot and the two break points divide the metal frame into a first portion and a second portion, the slot and the two break points together form the first portion, and the first portion constitutes a radiator of the antenna structure and The second antenna is grounded, and the residual antenna is disposed inside the metal frame and spaced apart from the radiator.

A wireless communication device comprising the antenna structure described in the above item.

The antenna structure and the wireless communication device having the antenna structure change the direction of the ground current of the antenna structure by setting the residual antenna, thereby changing the polarization direction thereof, and finally improving the hemispherical radiation pattern on the antenna structure. The radiant energy of the antenna structure is mainly concentrated in the upper hemisphere, so as to effectively improve the transceiving performance of the antenna structure. In addition, since the radiator is directly formed by the first portion of the metal frame in the metal member, the volume of the wireless communication device can be effectively reduced, and the wireless communication device can be developed toward miniaturization. Furthermore, the slotted and broken points on the metal member are disposed on the metal frame and are not disposed on the metal back plate, so that the metal back plate constitutes an all-metal structure, that is, the slotted And the breakpoint does not occupy the area of the metal back plate at all, so that the metal back plate can avoid the integrity and aesthetics of the metal back plate due to the setting of the slot and the break point.

1 is a schematic structural diagram of a wireless communication device according to a first preferred embodiment of the present invention.

2 is a circuit diagram of the antenna structure of the wireless communication device shown in FIG. 1 without a residual antenna.

3 is a circuit diagram of the antenna structure of the wireless communication device shown in FIG.

4 is a radiation pattern diagram of the antenna structure of the wireless communication device shown in FIG. 1 in which the antenna structure is not provided with a residual antenna.

FIG. 5 is a radiation pattern diagram of an antenna structure for setting a residual antenna in the wireless communication device shown in FIG. 1. FIG.

FIG. 6 is a schematic structural view showing an antenna structure provided with an extension portion in the wireless communication device shown in FIG. 1. FIG.

FIG. 7 is another schematic structural view of the antenna structure of FIG. 1 with an extension portion provided with an antenna structure.

FIG. 8 is a schematic structural diagram of a wireless communication apparatus according to a second preferred embodiment of the present invention.

FIG. 9 is a schematic structural diagram of a wireless communication apparatus according to a third preferred embodiment of the present invention.

Referring to FIG. 1, a first preferred embodiment of the present invention provides an antenna structure 100 that can be applied to a wireless communication device 200 such as a mobile phone or a personal digital assistant to transmit and receive radio waves to transmit and exchange wireless signals.

The wireless communication device 200 also includes a substrate 21. The substrate 21 is a printed circuit board (PCB) which can be made of a dielectric material such as epoxy glass fiber (FR4). The substrate 21 is provided with a system ground plane 211 and a clearance area 213. The clearance area 213 is disposed adjacent to the system ground plane 211. The substrate 21 is further provided with a first feeding point 215 and a grounding point 217. The first feed point 215 is disposed on a side of the system ground plane 211 adjacent to the clearance area 213 for providing signal feeding to the antenna structure 100. The grounding point 217 is disposed on a side of the system ground plane 211 adjacent to the clearance area 213, and is spaced apart from the first feeding point 215 for electrically connecting to the system ground plane 211, and further Antenna structure 100 provides grounding.

The antenna structure 100 includes a radiator 11 and a stub antenna 13. The radiator 11 and the stub antenna 13 are both disposed inside the wireless communication device 200. Specifically, in the embodiment, the radiator 11 is a Global Positioning System (GPS) antenna, and includes a feeding portion 111, a ground portion 113, and a radiation portion 115. In the embodiment, the feeding portion 111 is substantially in the shape of a strip, which is disposed in a plane perpendicular to the substrate 21 and electrically connected to the first feeding point 215 for the radiator. 11 feed current. The grounding portion 113 has a substantially rectangular strip shape and is disposed on a plane of the feeding portion 111. One end of the grounding portion 113 is electrically connected to the grounding point 217 for providing grounding for the radiating portion 115, and the other end extends in a direction parallel to the feeding portion 111, and is further arranged parallel to the feeding portion 111. .

The radiating portion 115 is disposed integrally in a plane parallel to the substrate 21 and above the clearing region 213. The radiating portion 115 is substantially F-shaped and includes a first radiating section 1151, a second radiating section 1153, and a third radiating section 1155. The first radiating section 1151 has a substantially rectangular strip shape, and one end thereof is electrically connected to one end of the feeding portion 111 away from the first feeding point 215, and the other end extends in a direction perpendicular and away from the feeding portion 111. The second radiating section 1153 is substantially in the shape of a strip, and is disposed on the same plane as the first radiating section 1151. One end of the second radiating section 1153 is electrically connected to one end of the grounding portion 113 away from the grounding point 217, and the other end extends in a direction parallel to the first radiating section 1151 and away from the grounding portion 113 to The first radiating segments 1151 are arranged in parallel with each other. The third radiating section 1155 is substantially in the shape of a strip, which is disposed perpendicular to the first radiating section 1151 and the second radiating section 1153. Specifically, one end of the third radiating section 1155 is electrically connected to one end of the second radiating section 1153 away from the grounding portion 113, and the other end extends in a direction perpendicular to and close to the first radiating section 1151 until the first The radiating section 1151 is vertically connected away from one end of the feeding portion 111. The third radiant section 1155 then passes over the first radiant section 1151 to continue extending in a direction perpendicular and away from the first radiant section 1151, thereby being common with the first radiant section 1151 and the second radiant section 1153. The F-type structure is formed.

It can be understood that, in other embodiments, the radiator 11 is not limited to the above structure, and may be other structures. For example, the radiator 11 may also be a monopole antenna, and only the radiator is required to be ensured. 11 can receive GPS signals.

In this embodiment, the stub antenna 13 is substantially L-shaped and disposed in the clearance area 213. The stub antenna 13 includes a first stub 131 and a second stub 133. The first stub 131 is substantially rectangular in shape and is electrically connected to the system ground plane 211. The second stub 133 has a substantially rectangular strip shape, and one end thereof is electrically connected to one end of the first stub 131 away from the system ground plane 211, and the other end is perpendicular to the first stub 131 and close to the The directions of the first radiating section 1151 and the second radiating section 1153 extend until overlapping with the projection of the third radiating section 1155 in the clearance area 213. In this embodiment, the length of the second stub 133 is 19.6 mm, and the distance between the second stub 133 and the third radiating section 1155 is 2.8 mm.

It can be understood that the structure of the stub antenna 13 is not limited to the L-shape described in the above item, and may be other shapes, such as a T-shape, only to ensure that one end of the stub antenna 13 is grounded and the other end is open (open And its open end may overlap with the projection of the third radiant section 1155 at the clearance area 213.

Referring to FIG. 2 together, the antenna structure 100 is not provided with the stub antenna 13 and only the current direction of the radiator 11 is set. Obviously, when current enters from the feed portion 111, current will flow through the third radiant section 1155 to form a current I _{X1 in the} X direction. In addition, the current I _X2 flowing to the ground portion 113 and the current I _X1 cancel each other, so that the current mainly flows in the Y direction to cause polarization in the Y direction, so that most of the radiant energy of the antenna structure 100 is concentrated in the lower half. Course type.

Please refer to FIG. 3 for a schematic diagram of current flow after the radiator 11 and the residual antenna 13 are disposed in the antenna structure 100. Obviously, when current enters from the feed portion 111, current will flow through the third radiant section 1155 to form a current I _{X1 in the} X direction. In addition, due to the arrangement of the L-type stub antenna 13, the currents I _X2 and I _X3 flowing to the ground portion 113 cancel each other, thereby causing the current I _{X1 to} form a polarization in the X direction, thereby causing most of the radiation of the antenna structure 100. The energy is concentrated in the upper half of the court type, thereby effectively improving the performance of the antenna structure 100 for receiving satellite signals.

4 is a radiation pattern diagram of the antenna structure 100 without the stub antenna 13 disposed. Obviously, if the antenna structure 100 is not provided with the stub antenna 13, the radiant energy of the antenna structure 100 is mainly concentrated in the lower half court type. FIG. 5 is a radiation pattern diagram of the antenna structure 100 in which the stub antenna 13 is disposed. Obviously, after the antenna structure 100 is disposed, the radiant energy of the antenna structure 100 is mainly concentrated on the upper half of the stadium type, thereby effectively improving the performance of the antenna structure 100 for receiving satellite signals. The upper half court type and the lower half court type constitute a radiation pattern of the antenna structure 100.

It can be understood that the X, Y, and Z directions of FIGS. 2 to 5 are the same. In FIGS. 2 to 5, the upper direction refers to the direction in which the Y-axis coordinate is increased, and the lower portion refers to the direction in which the Y-axis coordinate decreases. The third radiant section 1155 and the second residual section 133 are both parallel to the X axis. The first radiating section 1151, the second radiating section 1153, and the first stub 131 are all parallel to the Y axis. The feeding portion 111 and the ground portion 113 are both parallel to the Z axis.

In addition, it has been proved that when the antenna structure 100 is not provided with the stub antenna 13, the Partial Radiated Power (PRP) of the upper half field type is -7.21 dBm. When the residual antenna 13 is set, the radiation power of the upper half of the stadium type is -3.09 dBm, which significantly improves the radiation power of the upper half of the stadium type.

Referring to FIG. 6 , in other embodiments, the antenna structure 100 may further include an extension 15 . The wireless communication device 200 also includes a second feed point 219. The second feed point 219 is disposed on a side of the system ground plane 211 near the clearance area 213. In the embodiment, the extension portion 15 has a substantially rectangular strip shape, which is disposed coplanar with the stub antenna 13 . One end of the extending portion 15 is electrically connected to the second signal feeding point 219, and the other end is vertically connected to the second residual portion 133. The extension portion 15 and the first stub segment 131 are disposed in parallel with each other, and are disposed on the same side of the second stub segment 133 as the first stub segment 131, and further form a substantially F-type structure. The extension portion 15 is configured to feed a current signal to the stub antenna 13 so that the stub antenna 13 can operate in the 2.4 GHz band and the 5 GHz band to achieve a dual-frequency design of GPS/WIFI.

Referring to FIG. 7 together, it can be understood that in other embodiments, the extending portion 15 is not limited to the rectangular strip shape described in the above item, and may be other shapes, such as an L shape or a T shape. The extension 15 of Figure 7 is L-shaped. In addition, the extension portion 15 is not limited to being electrically connected to the stub antenna 13 , and may be spaced apart from the stub antenna 13 to couple a current signal to the stub antenna 13 so that The stub antenna 13 operates in the WIFI band.

It can be understood that in other embodiments, the antenna structure 100 further includes an antenna carrier (not shown), and the antenna carrier may be made of an insulating material disposed on the clearance area 213. As such, the stub antenna 13 is not limited to being directly disposed in the clearing area 213 as described in the above item, and may be disposed on the antenna carrier and causing the second stub in the stub antenna 13 133 is spaced from the third radiant section 1155. Of course, the antenna carrier can also be used to carry the radiator 11 , and it is only necessary to ensure that the stub antenna 13 and the third radiator 1155 are spaced apart from each other.

Obviously, the antenna structure 100 and the wireless communication device 200 having the antenna structure 100 change the ground current direction of the antenna structure 100 by setting the residual antenna 13, thereby changing the polarization direction thereof, and finally improving the antenna structure. The hemispherical radiation pattern above 100 causes the radiant energy of the antenna structure 100 to be concentrated mainly in the upper hemisphere, so as to effectively improve the transceiving performance of the antenna structure 100.

Referring to FIG. 8, an antenna structure 300 according to a second embodiment of the present invention is applicable to a wireless communication device 400 such as a mobile phone and a personal digital assistant for transmitting and receiving radio waves for transmitting and exchanging wireless signals. Signal.

The antenna structure 300 includes a radiator 31 and a stub antenna 33. The radiator 31 is spaced apart from the stub antenna 33. The stub antenna 33 is disposed on the substrate 41 of the wireless communication device 400. The substrate 41 is a PCB board which can be made of a dielectric material such as epoxy glass fiber (FR4). The substrate 41 is provided with a system ground plane 411 and a clearance area 413. In the embodiment, the stub antenna 33 is substantially L-shaped and disposed in the clearance area 413. The stub antenna 33 includes a first stub 331 and a second stub 332. The first stub 331 is substantially rectangular in shape and is electrically connected to the system ground plane 411. The second stub 332 has a substantially rectangular strip shape, and one end thereof is vertically electrically connected to one end of the first stub 331 away from the system ground plane 411. It can be understood that the structure of the stub antenna 33 is not limited to the L-shape described in the above item, and may be other shapes, such as a T-shape, only need to ensure that one end of the stub antenna 33 is grounded and the other end is open (open ) Just fine.

In this embodiment, the antenna structure 300 is different from the antenna structure 200 in that the antenna structure 300 further includes a metal member 35. The metal member 35 can be an appearance component of the wireless communication device 400, such as a metal back cover of the wireless communication device 400.

The metal member 35 includes a metal back plate 351 and a metal frame 353 disposed around the metal back plate 351. The metal frame 353 is vertically disposed on a periphery of the metal back plate 351 and includes two oppositely disposed long sides 355 and two oppositely disposed short sides 357.

A groove 358 is disposed on the metal frame 353. In the embodiment, the slot 358 is disposed on one of the short sides 357 and extends to a long side 355 adjacent to the short side 357. Two metal breaks 359 are also formed on the metal frame 353. In the embodiment, the two break points 359 are respectively disposed at two ends of the slot 358 and are respectively perpendicular to the slot 358. The slot 358 and the two break points 359 divide the metal frame 353 into two parts, that is, the first part P1 and the second part P2. The slot 358 and the two break points 359 together form the first portion P1 and constitute the radiator 31 of the antenna structure 300. The second portion P2 is electrically connected to the metal back plate 351 and grounded. In addition, the slot 358 and the break point 359 are filled with an insulating material such as plastic or rubber, thereby separating the first portion P1 and the second portion P2, and also partitioning the first portion P1 and the metal back plate. 351.

In this embodiment, the radiator 31 is a GPS antenna whose overall length is less than or equal to a quarter wavelength of the GPS signal it receives. One end of the radiator 31 can be electrically connected to the first feed point 415 on the substrate 41 to feed a current signal to the radiator 31. In addition, the radiator 31 is also electrically connected to the second portion P2 by a connecting member such as a connecting wire or a spring, and is grounded by the second portion P2 of the metal frame 353.

It can be understood that, in this embodiment, the radiator 31 is disposed in the upper right corner of the wireless communication device 400, that is, in an L shape having a certain arc. Of course, in other embodiments, the position of the radiator 31 is not limited to the above, and may be disposed at other positions of the metal frame 353. For example, the radiator 31 is entirely located in the wireless communication device 400. Upper left or upper. When the radiator 31 is disposed above the wireless communication device 400, that is, the short side 357 located above, the radiator 31 has a straight shape as a whole, and the slot 358 and the two breakpoints 359 All of the short sides 357 are disposed above.

It can be understood that, in this embodiment, the slot 358 is disposed at one end of the metal frame 353 near the metal back plate 351. Of course, in other embodiments, the position of the slot 358 at the metal frame 353 can be adjusted according to actual conditions. For example, the slot 358 can be disposed at one end of the metal frame 353 away from the metal back plate 351. Further, the width of the radiator 31 can be effectively adjusted.

Similar to the antenna structure 300 of the first embodiment of the present invention, after the antenna structure 300 is disposed, the antenna structure 300 can effectively change the ground current direction of the antenna structure 300, thereby changing the polarization direction thereof, and finally improving the antenna structure 300. The upper hemisphere radiation pattern allows the radiant energy of the antenna structure 300 to be mainly concentrated in the upper half court type to effectively improve the performance of the antenna structure 300 for receiving satellite signals. In addition, since the radiator 31 is directly formed by the first portion P1 of the metal frame 353 of the metal member 35, the volume of the wireless communication device 400 can be effectively reduced, and the wireless communication device 400 can be developed toward miniaturization. . Moreover, the slot 358 and the break point 359 of the metal member 35 are disposed on the metal frame 353, and are not disposed on the metal back plate 351, so that the metal back plate 351 forms an all-metal structure. That is, the slot 358 and the break point 359 do not occupy the area of the metal back plate 351 at all, so that the metal back plate 351 can avoid the integrity of the metal back plate 351 due to the setting of the slot 358 and the break point 359. Sex and aesthetics.

Referring to FIG. 9 , an antenna structure 500 according to a third preferred embodiment of the present invention is applicable to a wireless communication device 600 such as a mobile phone or a personal digital assistant for transmitting and receiving radio waves for transmission. Exchange wireless signals.

The antenna structure 500 includes a radiator 51, a stub antenna 53 and a metal member 55. The radiator 51 is spaced apart from the stub antenna 53. The radiator 51 is formed by the first portion P1 of the metal member 55 in the antenna structure 500 and is electrically connected to the first feed point 615 of the wireless communication device 600 for feeding current to the radiator 51.

One of the differences between the antenna structure 500 and the antenna structure 300 is that the radiator 51 is disposed at the upper left corner of the wireless communication device 600. Like the radiator 31, the radiator 51 can also be disposed at other locations. For example, in other embodiments, the radiator 51 can be located at or above the upper right corner of the wireless communication device 600. When the radiator 51 is disposed above the wireless communication device 600, that is, the short side 557 located above, the radiator 51 has a straight shape as a whole.

In addition, the specific structure of the stub antenna 53 is different from the structure of the stub antenna 33. Specifically, the stub antenna 53 includes a connecting portion 531, a first branch 532, and a second branch 533. The connecting portion 531, the first branch 532, and the second branch 533 are disposed in common. The connecting portion 531 is substantially L-shaped and includes a first connecting portion 534 and a second connecting portion 535. The first connecting segment 534 is electrically connected to the second feeding point 617 of the wireless communication device 600 and is disposed in parallel with the short side 557 for feeding a current signal to the residual antenna 53. One end of the second connecting section 535 is perpendicularly connected to the end of the first connecting section 534 near the long side 559, and the other end extends in a direction parallel to the long side 559 and close to the short side 557, and further The first connecting section 534 constitutes the L-shaped structure.

The first branch 532 includes a first extension 536, a second extension 537, and a third extension 538. The first extension 536 has a substantially rectangular strip shape, one end of which is connected to the second connection section 535 away from one end of the first connection section 534, and the other end continues to extend along the extension direction of the second connection section 535, that is, Extending in a direction perpendicular and away from the first connecting section 534 to be in line with the second connecting section 535. The second extension 537 has a substantially rectangular strip shape, one end of which is perpendicularly connected to the first extension 536 away from one end of the second connection section 535, and the other end is parallel to the first connection section 534 and away from the first The second extension 537 and the first connection segment 534 are respectively disposed on the same side of the second connection segment 535 and the first extension segment 536, and are respectively disposed on the second side. Connecting the two ends of the segment 535 and the first extension segment 536. The third extension 538 has a substantially rectangular strip shape, one end of which is electrically connected to the end of the second extension 537 away from the first extension 536, and the other end is parallel to the second connection section 535 and close to the The direction of the first connecting section 534 extends.

The second branch 533 is substantially L-shaped and includes a first resonant section 539 and a second resonant section 540. One end of the first resonance section 539 is perpendicularly connected to a connection point of the second connection section 535 and the first extension section 536, and extends in a direction parallel to the first connection section 534 and adjacent to the radiator 51. The second resonant section 540 has a substantially rectangular strip shape, and one end thereof is perpendicularly connected to the end of the first resonant section 539 away from the second connecting section 535 and the first extending section 536, and the other end is perpendicular to the first A resonance section 539 extends in the direction of the second extension section 537, and further forms the L-shaped structure together with the first resonance section 539.

It can be understood that the current signal can be fed to the radiator 51 and the stub antenna 53 by the first feeding point 615 and the second feeding point 617, respectively. Specifically, when the current signal enters from the second feed point 617, a portion of the current will pass through the connecting portion 531 and flow through the first branch 532, thereby enabling the stub antenna 13 to operate at 2.4. GHz band. Another portion of the current passes through the connecting portion 531 and flows through the second branch 533, thereby enabling the stub antenna 13 to operate in the 5 GHz band. In addition, the current signal enters the radiator 51 by the first feeding point 615, so that the radiator can transmit and receive GPS signals, that is, the GPS/WIFI multi-band design is achieved.

Obviously, after the antenna structure 500 is disposed, the antenna structure of the antenna structure 500 can effectively change the ground current direction of the antenna structure 500, thereby changing the polarization direction thereof, and finally improving the hemispherical radiation field pattern of the antenna structure 500, so that the antenna structure The radiant energy of 500 is mainly concentrated in the upper half court type to effectively improve the performance of the antenna structure 500 for receiving satellite signals.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.

100, 300, 500‧‧‧ antenna structure

11, 31, 51‧‧‧ radiators

111‧‧‧Feeding Department

113‧‧‧ Grounding Department

115‧‧‧ Radiation Department

1151‧‧‧First radiant section

1153‧‧‧second radiant section

1155‧‧‧third radiant section

13, 33, 53‧‧‧ Residual antenna

131, 331‧‧‧ first stub

133, 332‧‧‧Second paragraph

15‧‧‧Extension

200, 400, 600‧‧‧ wireless communication devices

21, 41, 61‧‧‧ substrates

211, 411‧‧‧ system ground plane

213, 413‧‧ ‧ clearance area

215, 415, 615‧‧‧ first feed point

217‧‧‧ Grounding point

219, 617‧‧‧ second feed point

35, 55‧‧‧Metal parts

351‧‧‧Metal backsheet

353‧‧‧Metal border

355‧‧‧ long side

357‧‧‧ Short side

358‧‧‧ slotting

359‧‧‧ breakpoints

P1‧‧‧Part 1

P2‧‧‧ Part II

531‧‧‧Connecting Department

532‧‧‧ first branch

533‧‧‧Second branch

534‧‧‧First connection segment

535‧‧‧Second connection

536‧‧‧First extension

537‧‧‧Second extension

538‧‧‧ Third extension

539‧‧‧First Resonance Segment

540‧‧‧second resonance

no

300‧‧‧Antenna structure

31‧‧‧ radiator

33‧‧‧Residual antenna

331‧‧‧First Paragraph

332‧‧‧Second paragraph

400‧‧‧Wireless communication device

41‧‧‧Substrate

411‧‧‧System ground plane

413‧‧‧ clearance area

415‧‧‧first feed point

35‧‧‧Metal parts

351‧‧‧Metal backsheet

353‧‧‧Metal border

355‧‧‧ long side

357‧‧‧ Short side

358‧‧‧ slotting

359‧‧‧ breakpoints

P1‧‧‧Part 1

P2‧‧‧ Part II

Claims (11)

An antenna structure includes a metal frame and a residual antenna. The metal frame is provided with a slot and two break points. The two break points are respectively disposed at two ends of the slot and perpendicular to the slot. The slot and the two break points divide the metal frame into a first portion and a second portion, the slot and the two break points together form the first portion, and the first portion constitutes a radiator of the antenna structure and The second antenna is grounded, and the residual antenna is disposed inside the metal frame and spaced apart from the radiator. The antenna structure of claim 1, wherein the metal frame is a metal frame of a wireless communication device, and the metal frame surrounds a metal backplane of the wireless communication device. The antenna structure of claim 1, wherein the radiator is a GPS antenna, and the length of the radiator is less than or equal to a quarter wavelength of the received GPS signal. The antenna structure according to claim 1, wherein the slot and the two break points are filled with an insulating material. The antenna structure of claim 1, wherein the stub antenna is L-shaped. The antenna structure of claim 1, wherein the radiator is further electrically connected to the second portion by a connector to be grounded by the second portion. The antenna structure of claim 1, wherein the stub antenna comprises a connecting portion and a first branch, the connecting portion is L-shaped, and includes a first connecting portion and a second connecting portion, the first a connecting section for feeding a current signal, the second connecting section being vertically connected to one end of the first connecting section; the first branch comprising a first extending section, a second extending section and a third extending section, One end of the first extension is connected to the second connection section away from one end of the first connection section, and is in line with the second connection section, and one end of the second extension is electrically connected to the first extension The segment is away from one end of the second connecting segment, and the other end extends in a direction parallel to the first connecting segment and away from the first extending segment, and one end of the third extending segment is vertically connected to the second extending segment Far from the end of the first extension, the other end extends in a direction parallel to the second connecting section and adjacent to the first connecting section. The antenna structure of claim 7, wherein the stub antenna further comprises a second branch, the second branch comprising a first resonant segment and a second resonant segment, one end of the first resonant segment being vertical Connecting to a connection point of the second connecting segment and the first extending segment, and extending in a direction parallel to the first connecting segment and adjacent to the radiator; one end of the second resonant segment is vertically connected to the first A resonant section is away from the ends of the second connecting section and the first extending section, and the other end extends in a direction perpendicular to the first resonant section and adjacent to the second extended section. The antenna structure of claim 8, wherein the connecting portion, the first branch, and the second branch are disposed in a coplanar manner. A wireless communication device comprising the antenna structure of any one of claims 1-9. The wireless communication device of claim 10, wherein the wireless communication device further comprises a substrate, the substrate is provided with a first feed point and a second feed point, the first feed point and The radiator is electrically connected to feed the signal to the radiator, and the second feed point is electrically connected to the stub antenna for feeding a signal to the stub antenna.