CN112151937A - Antenna structure and wireless communication device with same - Google Patents

Referring to fig. 1 and 2, a first preferred embodiment of the present invention provides an

100, which can be applied to a

200, such as a mobile phone, a personal digital assistant, etc., for transmitting and receiving radio waves to transmit and exchange wireless signals.

Referring to fig. 3, the

100 at least includes a

11, a

12, a

13, a

14, a

15, a

16, a

17, a

18, and a

19.

The

11 may be a housing of the

200. The

11 at least includes a

112 and a

113. In the present embodiment, the

112 is substantially a ring-shaped structure, and is made of a metal material. In this embodiment, the

112 and the

113 are integrally formed. An opening (not shown) is disposed on a side of the

112 away from the

113, and is configured to accommodate the

201 of the

200. It is understood that the

201 has a display plane exposed at the opening. The

113 is used to support the

201, provide electromagnetic shielding, and improve the mechanical strength of the

200.

The

113 is disposed at the edge of the

112, and is substantially parallel to the display plane of the

201 at an interval. It can be understood that, in the present embodiment, the

113 and the

112 together enclose an

114. The

114 is used for accommodating electronic components or circuit modules such as a substrate and a processing unit of the

200 therein. It is understood that, in the present embodiment, the

201 may be a full screen structure. In other embodiments, the

201 may have a non-full screen structure, that is, the

201 may have at least one notch (not shown).

The

112 at least includes a

115, a

116 and a

117. In this embodiment, the

115 may be a bottom end of the

200, i.e., the

100 constitutes a lower antenna of the

200. The

116 and the

117 are disposed opposite to each other, and are disposed at both ends of the

115, preferably, perpendicularly.

The

113 is provided with a

120. The

112 has a

118 and a

119. The

120 is disposed on the planar edge of the

113 and parallel to the

112. The

120 is substantially U-shaped, and is opened inside the

115 and extends toward the

116 and the

117, so that the

115 and the

113 are spaced and insulated from each other. In this embodiment, the

118 is disposed at a position of the

116 close to the

115, and the

118 is disposed at an end of the

120. The

119 is opened at a position of the

115 close to the

117.

The

118 and the

119 are both connected to the

120 and extend to block the

112. In the present embodiment, the

120, the

118 and the

119 jointly define a first radiation portion E1 and a second radiation portion E2 spaced apart from the

112. In this embodiment, the

112 between the

118 and the

119 constitutes the first radiation portion E1. The

119 and the

112 of the

120 between the ends of the

117 constitute the second radiating portion E2.

In the present embodiment, the first radiating portion E1 and the metal back

113 are spaced and insulated from each other by the

120 and the

118. One side of the second radiation portion E2 away from the

119 is connected to the metal back

113, so that the second radiation portion E2 and the metal back

113 form an integrally formed frame.

In the present embodiment, the widths of the

118 and the

119 are both D1. The

120 has a width D2. In the present embodiment, the width D1 of the

118 and the

119 is 1-3 mm. The width D2 of the

120 is 0.5-1.5 mm.

It is understood that, in the present embodiment, the

118, the

119 and the

120 are filled with an insulating material, such as plastic, rubber, glass, wood, ceramic, etc., but not limited thereto.

It is understood that in other embodiments, the shape of the

120 is not limited to the U shape described above, and may be adjusted according to specific requirements, for example, it may also be straight, oblique, zigzag, and so on.

Obviously, the shape and position of the

120 and the positions of the

118 and the

119 on the

112 can be adjusted according to specific requirements, and it is only necessary to ensure that the

120, the

118 and the

119 can jointly partition the first radiation portion E1 and the second radiation portion E2, which are arranged at intervals, from the

11.

In the present embodiment, the metal back

113 is provided with a

210, a

211, a

212 and a

213. The

210, the

211 and the

212 are disposed on the metal back

113 at intervals, so as to provide grounding for the

100. The

210 is disposed between the

212 and the

213. The

213 is disposed between the

210 and the

211 for feeding current to the

100.

In this embodiment, the

100 further includes a

121 and a

122. The

121 and the

122 are disposed in the

11. The

121 is substantially straight. One end of the

121 is vertically connected to one end of the

120 and the

118. The other end of the

121 extends in a direction parallel to the

115 and close to the

117. The

122 is substantially straight. One end of the

122 is vertically connected to the end of the

120 located at the

117. The other end of the

122 extends in a direction parallel to the

115 and close to the

116. In this embodiment, the extension sections of the

121 and the

122 are on the same straight line.

The

121 has a length L1. The

122 has a length L2. In the present embodiment, the length L1 of the

121 and the length L2 of the

122 are both 1mm-20mm, and the length L1 of the

121 is different from the length L2 of the

122. In the present embodiment, the L1 is greater than L2, i.e., the length L1 of the

121 is longer than the length L2 of the

122.

It is understood that in other embodiments, the shapes of the first extending

121 and the second extending

122 are not limited to the straight strip shape, and may be adjusted according to specific requirements, for example, they may also be in a diagonal shape, a zigzag shape, and the like. The positions and lengths of the

121 and the

122 can also be adjusted according to specific requirements. For example, the positions of the

121 and the

122 may be interchanged. The length L1 of the

121 is shorter than the length L2 of the

122. The length L1 of the

121 is the same as the length L2 of the

122.

In this embodiment, the

200 further includes at least one electronic component. In this embodiment, the

200 includes at least two electronic components, namely a first

215 and a second

216. The first

215 and the second

216 are disposed on the same side of the metal back

113.

In the present embodiment, the first

215 is a Universal Serial Bus (USB) interface module disposed between the

210 and the

213. The second

216 is a speaker disposed inside the first extending

121. The second

216 is spaced from the

120 by a distance d, which is 5-10 mm. That is, the second

216 is located 5-10mm from the

120.

It is understood that the positions of the first

215 and the second

216 can be adjusted according to specific requirements. The first

215 and the second

216 are both arranged to be spaced apart from the first radiating portion E1 through the

120.

It can be understood that, in this embodiment, the

112 is further provided with a

23. The

23 is opened at a central position of the

115 and penetrates the

115. The

23 corresponds to the first

215 such that the first

215 is partially exposed from the

23. Thus, a user can insert a USB device through the

23 to establish electrical connection with the first

215.

The feeding

12 is disposed inside the

11 and located between the first

215 and the

119. One end of the

12 is electrically connected to the first radiating element E1, and the other end is electrically connected to the

213 through the matching

19, so as to feed a current signal to the first radiating element E1.

It is understood that, in the present embodiment, the matching

19 may be an L-type matching circuit, a T-type matching circuit, a pi-type matching circuit, or other capacitors, inductors, and combinations of capacitors and inductors for adjusting the impedance matching of the first radiation portion E1.

It is understood that, in the present embodiment, the feeding

12 is also used to further divide the first radiation portion E1 into two parts, i.e. a first radiation segment E11 and a second radiation segment E12. The

112 between the feeding

12 and the

118 forms the first radiation segment E11. The

112 between the feeding

12 and the

119 forms the second radiation segment E12.

In this embodiment, the position of the feeding

12 does not correspond to the middle of the first radiating part E1, so the length of the first radiating section E11 is greater than the length of the second radiating section E12.

It is understood that in the present embodiment, the

15 may be in an on or off state. When the

15 is turned on, the

112 between the feeding

12 and the

18 forms an antenna radiation path a 1. It is understood that, in the present embodiment, when the

15 is switched off, the

112 between the feeding

12 and the

18 does not form the antenna radiation path a 1.

In the present embodiment, the

16 is disposed inside the

11 and between the first

215 and the

18. The distance between the

16 and the first

215 is smaller than the distance between the

16 and the

18. One end of the

16 is electrically connected to the first radiation portion E1, and the other end is electrically connected to the

210 through the

13, thereby providing grounding for the first radiation portion E1.

The

17 is disposed inside the

11 and between the

119 and the

117. One end of the

17 is electrically connected to the

211 through the

14, and the other end is electrically connected to the end of the second radiating portion E2 close to the

119, so as to provide grounding for the second radiating portion E2.

The

18 is disposed inside the

11 and between the

118 and the

16. One end of the

18 is electrically connected to the first radiation portion E1, and the other end is electrically connected to the

212 through the

15, thereby providing grounding for the first radiation portion E1.

It should be understood that, referring to fig. 4, in the present embodiment, when the

15 is turned off, after the current is fed from the

213, the current flows through the matching

19, the feeding

12 and the first radiation section E11 in sequence, and flows to the

118 and is grounded through the

16, so that the first radiation section E11 excites a first mode to generate a radiation signal of a first frequency band (see path P1). Meanwhile, when the current is fed from the

213, the current also flows through the matching

19, the feeding

12 and the second radiation section E12 in sequence, and is coupled to the second radiation part E2 through the

119, and is grounded through the

211, so that the second radiation part E2 excites a second mode to generate a radiation signal of a second frequency band (see path P2). Meanwhile, when the current is fed from the

213, the current also flows through the matching

19, the feeding

12 and the second radiation section E12 in sequence, so that the second radiation section E12 excites a third mode to generate a radiation signal of a third frequency band (see path P3). In addition, when the current is fed from the

213, the current further flows through the matching

19, the feeding

12 and the first radiation segment E11 in sequence, and is coupled to the

121 through the

118, so as to excite the third mode to generate the radiation signal of the third frequency band (see path P4).

In this embodiment, when the

15 is turned on, after the current is fed from the

213, the current further flows through the feeding

12, the antenna radiation path a1, the

18 and the

15 in sequence, and is grounded through the

212, so that the antenna radiation path a1 excites a fourth mode to generate a radiation signal of a fourth frequency band (refer to path P5).

In this embodiment, when the

15 is turned on, after the current is fed from the

213, the current further sequentially flows through the feeding

12 and the first radiation section E11, and flows to the

118, and is grounded through the

18 and the

16, so that the first radiation section E11 excites the first mode to generate the radiation signal of the first frequency band. At this time, the frequency of the first band is lower than the frequency of the first band when the

15 is turned off.

It can be understood that, in the present embodiment, the

213 excites a corresponding LTE-a low frequency mode through the first radiation segment E11. The

213 couples a current to the second radiation part E2 through the second radiation segment E12, so as to excite a corresponding LTE-a medium-high frequency mode. The

213 then excites a corresponding LTE-a high frequency mode through the second radiation portion E2. That is to say, the first radiation portion E1 and the second radiation portion E2 can jointly excite the LTE-a low frequency mode, the LTE-a intermediate frequency mode, and the LTE-a high frequency mode through the

213, so as to meet the requirement of multi-frequency band, which covers the frequency ranges of 700-.

Obviously, in the present embodiment, the feeding

12 and the first radiating section E11 form a first antenna. The feeding

12 and the second radiation part E2 constitute a second antenna. The feeding

12 and the second radiation segment E12 form a third antenna. The feeding

12, the first radiating section E11 and the first extending

121 may also constitute a fourth antenna. The

12, the antenna radiation path a1, and the

18 constitute a fifth antenna. The first Antenna is a Planar Inverted-F Antenna (PIFA).

Referring to fig. 5, in the present embodiment, the

13 includes a

131 and at least one

133. The

131 may be a single-pole single-throw switch, a single-pole double-throw switch, a single-pole triple-throw switch, a single-pole four-throw switch, a single-pole six-throw switch, a single-pole eight-throw switch, or the like. The

131 is electrically connected to the first radiation segment E11. The

133 may be an inductor, a capacitor, or a combination of an inductor and a capacitor. The

133 are connected in parallel, and one end thereof is electrically connected to the

131, and the other end thereof is electrically connected to the

210, i.e., grounded. As such, by controlling the switching of the

131, the first radiation segment E11 can be switched to a different

133 to adjust the first frequency band of the first radiation segment E11.

For example, in the present embodiment, the

13 may include four

133 having different impedances. By switching the first radiation segment E11 to four different

133, the low frequencies of the first mode in the

100 can respectively cover the LTE-a Band8 Band (880-960MHz), the LTE-a Band5 Band (824-894MHz), the LTE-a Band13 Band (746-787MHz), and the LTE-a Band17 Band (704-746 MHz).

Referring to fig. 6, in the present embodiment, the switching

14 includes a

141 and at least one

143. The

141 may be a single-pole single-throw switch, a single-pole double-throw switch, a single-pole triple-throw switch, a single-pole four-throw switch, a single-pole six-throw switch, a single-pole eight-throw switch, or the like. The

141 is electrically connected to the second radiation part E2. The

143 may be an inductor, a capacitor, or a combination of an inductor and a capacitor. The switching

143 are connected in parallel, and one end thereof is electrically connected to the

141, and the other end thereof is electrically connected to the

211, i.e. the ground. In this way, by controlling the switching of the

141, the second radiation portion E2 can be switched to a

143. Since each switching

143 has different impedance, the second frequency band of the second radiating portion E2 can be adjusted by switching of the

141.

For example, in the present embodiment, the switching

14 may include three switching

143 with different impedances. By switching the second radiation portion E2 to three

143, the medium-high frequency of the second mode in the

100 can respectively cover the LTE-a Band1 Band (1920-.

Referring to fig. 7, in the present embodiment, the

15 includes a

151 and at least one

153. The

151 may be a single-pole single-throw switch, a single-pole double-throw switch, a single-pole triple-throw switch, a single-pole four-throw switch, a single-pole six-throw switch, a single-pole eight-throw switch, or the like. The

151 is electrically connected to the antenna radiation path a 1. The

153 may be an inductor, a capacitor, or a combination of an inductor and a capacitor. The

153 are connected in parallel, and one end thereof is electrically connected to the

151, and the other end thereof is electrically connected to the

212, i.e., the ground. In this manner, by controlling the switching of the

151, the antenna radiation path a1 can be switched to a different

153. Since each of the

153 has different impedance, the fourth frequency band of the antenna radiation path a1 can be adjusted by switching of the

151.

For example, in the present embodiment, the

15 may include one

153. By switching the antenna radiation path a1 to the

153, the low frequency of the fourth mode in the

100 can cover the LTE-a Band32 Band (1452-.

Fig. 8 is a graph of S-parameters (scattering parameters) of the

100 in the LTE-a low frequency mode when the

131 is switched to a different

133 in the

13 shown in fig. 5. The curve S801 is the S11 value when the first antenna is switched to one of the

133, so that the

100 operates in the LTE-a Band8 frequency Band (880-960 MHz). The curve S802 is the S11 value when the first antenna is switched to one of the

133, so that the

100 operates in the LTE-a Band5 Band (824-894 MHz). The curve S803 is the S11 value when the first antenna is switched to one of the

133, so that the

100 operates in the LTE-a Band13 Band (746-. The curve S804 is the S11 value when the first antenna is switched to one of the

133, so that the

100 operates in the LTE-a Band17 frequency Band (704-.

Fig. 9 is a graph of the total radiation efficiency of the

100 operating in the LTE-a low-frequency mode when the

131 is switched to a different

133 in the

13 shown in fig. 5. The curve S901 is a graph of the total radiation efficiency when the first antenna is switched to one of the

133, so that the

100 operates in the LTE-a Band8 frequency Band (880-960 MHz). The curve S902 is a graph of the total radiation efficiency when the first antenna is switched to one of the

133, so that the

100 operates in the LTE-a Band5 frequency Band (824-894 MHz). Curve S903 is a graph of the total radiation efficiency when the first antenna is switched to one of the

133, so that the

100 operates in the LTE-a Band13 frequency Band (746-. Curve S904 is a graph of the total radiation efficiency when the first antenna is switched to one of the

133, so that the

100 operates in the LTE-a Band17 frequency Band (704-.

Fig. 10 is a graph of S-parameters (scattering parameters) of the

100 in the LTE-a intermediate frequency mode and the LTE-a high frequency mode when the

131 is switched to the different

133 in the

13 shown in fig. 5. The curve S1001 is the S11 value when the

100 operates in the LTE-a intermediate frequency mode and the LTE-a high frequency mode when the first antenna is switched to the LTE-a Band8 frequency Band (880-960 MHz). The curve S1002 is the S11 value when the

100 operates in the LTE-a intermediate frequency mode and the LTE-a high frequency mode when the first antenna is switched to the LTE-a Band5 frequency Band (824-894 MHz). The curve S1003 is the S11 value when the

100 operates in the LTE-a intermediate frequency mode and the LTE-a high frequency mode when the first antenna is switched to the LTE-a Band13 frequency Band (746-787 MHz). The curve S1004 is the S11 value when the

100 operates in the LTE-a intermediate frequency mode and the LTE-a high frequency mode when the first antenna is switched to the LTE-a Band17 frequency Band (704 — 746 MHz).

Fig. 11 is a graph of the total radiation efficiency of the

100 operating in the LTE-a intermediate frequency mode and the LTE-a high frequency mode when the

131 is switched to a different

133 in the

13 shown in fig. 5. The curve S1101 is a total radiation efficiency curve when the first antenna is switched to the LTE-a Band8 frequency Band (880-960MHz), and the

100 operates in the LTE-a intermediate frequency mode and the LTE-a high frequency mode. The curve S1102 is a total radiation efficiency curve when the

100 operates in the LTE-a intermediate frequency mode and the LTE-a high frequency mode when the first antenna is switched to the LTE-a Band5 frequency Band (824-894 MHz). The curve S1103 is a total radiation efficiency curve when the first antenna is switched to the LTE-a Band13 frequency Band (746-. The curve S1104 is a total radiation efficiency curve when the first antenna is switched to the LTE-a Band17 frequency Band (704-746MHz), and the

100 operates in the LTE-a intermediate frequency mode and the LTE-a high frequency mode.

Fig. 12 is a graph illustrating S parameters (scattering parameters) of the

100 in the LTE-a intermediate frequency mode and the LTE-a high frequency mode when the

141 of the

14 shown in fig. 6 is switched to

143. Wherein the curve S1201 is the S11 value when the second antenna is switched to one of the switching

143, so that the

100 operates in the LTE-a Band1 Band (1920-2170 MHz). Curve S1202 is the S11 value when the second antenna is switched to one of the switching

143, so that the

100 operates in the LTE-a Band40 frequency Band (2300-2400 MHz). Curve S1203 is the S11 value when the second antenna is switched to one of the switching

143, so that the

100 operates in the LTE-a Band3 frequency Band (1710-.

Fig. 13 is a graph illustrating the total radiation efficiency of the

100 operating in the LTE-a intermediate frequency mode and the LTE-a high frequency mode when the

141 of the

14 shown in fig. 6 is switched to

143. Wherein the curve S1301 is a graph of the total radiation efficiency when the second antenna is switched to one of the switching

143, so that the

100 operates in the LTE-a Band1 frequency Band (1920-2170 MHz). Curve S13021 is a total radiation efficiency curve when the second antenna is switched to one of the switching

143, so that the

100 operates in the LTE-a Band40 frequency Band (2300-2400 MHz). Curve S1303 is a graph of the total radiation efficiency when the second antenna is switched to one of the switching

143, so that the

100 operates in the LTE-a Band3 frequency Band (1710-.

Fig. 14 is a graph of S-parameters (scattering parameters) when the

151 is switched to one of the

153 in the

15 shown in fig. 7, so that the

100 operates in the LTE-a Band32 frequency Band (1452-.

Fig. 15 is a graph of the total radiation efficiency when the

151 is switched to one of the

153 in the

15 shown in fig. 7, so that the

100 operates in the LTE-a Band32 frequency Band (1452-.

It is obvious from fig. 8 to fig. 15 that the feeding

12, the first radiating portion E1, the second radiating portion E2, the

121, the

16 and the

17 in the

100 are mainly used to excite the LTE-a low frequency mode, the LTE-a intermediate frequency mode and the LTE-a high frequency mode, and the switching of the

13 enables the low frequency of the

100 to at least cover the LTE-a Band8 Band (880 + 960MHz), the LTE-a Band5 Band (824 + 894MHz), the LTE-a Band13 Band (746 + 787MHz) and the LTE-a Band17 Band (704 + 746 MHz). Meanwhile, the switching

14 switches to enable the medium-high frequency of the

100 to at least cover the LTE-a Band1 frequency Band (1920-2170MHz), the LTE-a Band40 frequency Band (2300-2400MHz), and the LTE-a Band3 frequency Band (1710-1880 MHz). The feeding

12, the antenna radiation path a1 and the

18 in the

100 are mainly used for exciting an ultra-if mode, and the ultra-if of the

100 can at least cover the LTE-a Band32 Band (1452-.

Furthermore, when the

100 operates in the LTE-a Band32 Band (1452-. That is, when the

15 is switched, the

15 is only used for changing the super-intermediate frequency mode of the

100 and does not affect the LTE-a intermediate frequency mode, and the LTE-a high frequency mode thereof.

It is understood that in other embodiments, the positions of the

118 and the

119 can be adjusted according to specific situations. For example, as shown in fig. 16, the

118a is opened at a position of the

117 near the

115. The

119a is opened at a position of the

115 close to the

116.

1. An antenna structure is applied to a wireless communication device and is characterized in that the antenna structure comprises a metal shell, a feed-in part, a first grounding part and a grounding unit, the metal shell at least comprises a metal back plate and a metal frame, the metal frame and the metal back plate are integrally formed, a slot and at least one extension section are arranged on the metal back plate, a first breakpoint and a second breakpoint are arranged on the metal frame, the slot is arranged on the plane edge of the metal back plate and is parallel to the tail end part of the metal frame, and one of the first breakpoint and the second breakpoint is arranged at one end of the slot and is connected with the extension section; the groove, the first breakpoint and the second breakpoint are used for dividing a first radiation part and a second radiation part which are arranged at intervals from the metal frame, one end of the feed-in part is electrically connected to the first radiation part, and the first radiation part is divided into a first radiation section and a second radiation section; when the current is fed in from the feed-in part, the current also flows through the second radiation section, is coupled to the second radiation part through the second breakpoint, and is grounded through the grounding unit, so that the second radiation part excites a second mode to generate a radiation signal of a second frequency band.

2. The antenna structure of claim 1, characterized in that: when the current is fed in from the feeding part, the current also flows through the second radiation section, so that the second radiation section excites a third mode to generate a radiation signal of a third frequency band.

3. The antenna structure of claim 2, characterized in that: the metal frame further comprises a first side part and a second side part, the first side part and the second side part are respectively connected with two ends of the end part, the slot is arranged on the inner side of the end part and respectively extends towards the direction of the first side part and the direction of the second side part, the first breakpoint is arranged at a position, close to the end part, of the first side part, and the second breakpoint is arranged at a position, close to the second side part, of the end part; the metal frame between the first breakpoint and the second breakpoint forms the first radiation part, and the metal frame between the end of the slot located at the second side part and the second breakpoint forms the second radiation part.

4. The antenna structure of claim 3, characterized in that: the at least one extension section comprises a first extension section and a second extension section, one end of the first extension section is vertically connected with the end part of the slot positioned on the first side part and the first break point, and the other end of the first extension section extends along the direction parallel to the tail end part and close to the second side part; one end of the second extension section is vertically connected with one end of the slot, which is positioned at the second side part, and the other end of the second extension section extends along a direction which is parallel to the tail end part and is close to the first side part; the length of the first extension section is different from the length of the second extension section.

5. The antenna structure of claim 4, characterized in that: the antenna structure comprises a matching circuit, one end of the feed-in part is connected with the first radiation part, the other end of the feed-in part is electrically connected with the feed-in point through the matching circuit, for feeding a current signal into the first radiation part, the metal frame between the feed part and the first break point forms a first radiation section, the metal frame between the feed part and the second break point forms a second radiation section, when a current is fed in from the feed-in point, the current flows through the matching circuit and the first radiation section in sequence and is coupled to the first extension section through the first break point, further exciting the third mode to generate a radiation signal of the third frequency band, wherein the first mode is an LTE-A low-frequency mode, the second mode comprises an LTE-A intermediate frequency mode and a part of LTE-A high frequency mode, and the third mode is the other part of LTE-A high frequency mode.

6. The antenna structure of claim 5, characterized in that: the antenna structure further comprises a first switching circuit, the first switching circuit comprises a first switching unit and a plurality of first switching elements, the first switching unit is electrically connected to the first radiation section, the first switching elements are connected in parallel, one end of each first switching element is electrically connected to the first switching unit, the other end of each first switching element is grounded, each first switching element has different impedance, and the first switching unit is switched to different first switching elements by controlling the switching of the first switching unit, so that the first frequency band is adjusted.

7. The antenna structure of claim 6, characterized in that: the antenna structure further comprises a switching module, the switching module comprises a switching unit and a plurality of switching assemblies, the switching unit is electrically connected to the second radiation portion, the switching assemblies are connected in parallel, one end of each switching assembly is electrically connected to the switching unit, the other end of each switching assembly is grounded, each switching assembly has different impedances, and the switching unit is switched to different switching assemblies by controlling the switching of the switching unit, so that the second frequency band is adjusted.

8. The antenna structure of claim 7, characterized in that: one end of the first grounding part is electrically connected to the first radiation part, and the other end of the first grounding part is grounded through the first switching circuit so as to provide grounding for the first radiation part; the grounding unit is located between the second breakpoint and the second side portion, one end of the grounding unit is grounded through the switching module, and the other end of the grounding unit is electrically connected to the end portion, close to the second breakpoint, of the second radiation portion, so as to provide grounding for the second radiation portion.

9. A wireless communication apparatus, characterized in that: the wireless communication device comprising an antenna structure according to any of claims 1-8.

10. The wireless communications apparatus of claim 9, wherein: the wireless communication device comprises a first electronic component and a second electronic component, wherein the first electronic component and the second electronic component are both arranged on the same side of the metal backboard, the first grounding part is positioned between the first electronic component and the first breakpoint, and the distance between the first grounding part and the first electronic component is smaller than the distance between the first grounding part and the first breakpoint.