CN117832812A - Antenna structure and mobile device - Google Patents

Abstract

An antenna structure and a mobile device. The antenna structure comprises: the metal machine component, the feed-in radiation part, the first radiation part to the sixth radiation part and the adjusting circuit; the slot hole is formed in the metal mechanism part; the feed-in radiation part is provided with a feed-in point; the first radiation part is coupled to the feed radiation part; the adjusting circuit is coupled to the first radiation part; the second radiation part is coupled to the feed-in radiation part, and the feed-in radiation part is arranged between the first radiation part and the second radiation part; the third radiation part is coupled to a first grounding point on the metal machine component; the fourth radiation part is coupled to a second grounding point on the metal machine component; the fifth radiation part is coupled to a third grounding point on the metal machine component; the sixth radiation part is coupled to the feed radiation part; the feed-in radiation part, the first radiation part and the sixth radiation part are all arranged in the slot hole of the metal machine component. The antenna structure of the invention has at least the advantages of small size, wide frequency band, low complexity, low manufacturing cost and the like, so the antenna structure is very suitable for being applied to various communication devices.

Description

Antenna structure and mobile device

Technical Field

The present invention relates to an antenna structure, and more particularly, to a broadband (Wideband) antenna structure and a mobile device including the same.

Background

With the development of mobile communication technology, mobile devices are becoming increasingly popular in recent years, and common examples are: portable computers, mobile phones, multimedia players, and other portable electronic devices with hybrid functions. To meet the needs of people, mobile devices often have wireless communication capabilities. Some cover long range wireless communication ranges, such as: mobile phones use 2G, 3G, LTE (Long Term Evolution ) systems and their frequency bands of 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz, and 2500MHz for communication, while some cover short range wireless communication ranges, such as: wi-Fi, bluetooth systems use the frequency bands of 2.4GHz, 5.2GHz, and 5.8GHz for communication.

An Antenna (Antenna) is an indispensable element in the field of wireless communication. If the operating bandwidth (Operational Bandwidth) of the antenna used to receive or transmit signals is too narrow, it can easily cause degradation in the communication quality of the mobile device. Therefore, how to design a small-sized and wide-band antenna structure is an important issue for designers.

Disclosure of Invention

In a preferred embodiment, the present invention provides an antenna structure, comprising: a metal machine component, wherein a slot is formed in the metal machine component; a feed-in radiation part with a feed-in point; a first radiation part coupled to the feed radiation part; an adjusting circuit coupled to the first radiating portion; the second radiation part is coupled to the feed radiation part, and the feed radiation part is arranged between the first radiation part and the second radiation part; a third radiating portion coupled to a first ground point on the metalworking member; a fourth radiating portion coupled to a second ground point on the metalworking member; a fifth radiating portion coupled to a third ground point on the metalworking member; and a sixth radiating portion coupled to the feed radiating portion; the feed-in radiation part, the first radiation part, the second radiation part, the third radiation part, the fourth radiation part, the fifth radiation part and the sixth radiation part are all arranged in the slot hole of the metal machine component.

In some embodiments, the antenna structure covers a first frequency band, a second frequency band, a third frequency band, a fourth frequency band, a fifth frequency band, and a sixth frequency band.

In some embodiments, the first frequency band is between 617MHz and 960MHz, the second frequency band is between 1400MHz and 1500MHz, the third frequency band is between 1710MHz and 2690MHz, the fourth frequency band is between 3300MHz and 3800MHz, the fifth frequency band is between 4200MHz and 4800MHz, and the sixth frequency band is between 5100MHz and 6000 MHz.

In some embodiments, the first frequency band is divided into a first frequency interval between 617MHz and 690MHz, a second frequency interval between 690MHz and 815MHz, and a third frequency interval between 815MHz and 960 MHz.

In some embodiments, the adjustment circuit includes: a first switch having a first end and a second end, wherein the first end of the first switch is coupled to an adjusting node on the first radiating portion, and the second end of the first switch is coupled to a ground potential; an inductor; and a second switch having a first end and a second end, wherein the first end of the second switch is coupled to the adjusting node, and the second end of the second switch is coupled to the ground potential through the inductor.

In some embodiments, if the first switch is off and the second switch is on, the antenna structure will support the first frequency interval; if the first switch is on and the second switch is off, the antenna structure can support the second frequency interval; and if both the first switch and the second switch are turned off, the antenna structure will support the third frequency interval.

In some embodiments, the slot of the metalorganic member is an L-shaped closed slot and includes a narrower portion and a wider portion.

In some embodiments, the slot of the metalization member has a length approximately equal to 1 wavelength of the first frequency band.

In some embodiments, the second radiating portion, the third radiating portion, the fourth radiating portion, and the fifth radiating portion each exhibit an L-shape.

In some embodiments, the width of the second radiating portion is greater than the width of the first radiating portion.

In some embodiments, the fourth radiating portion is at least partially surrounded by the fifth radiating portion, and the fifth radiating portion extends between the second radiating portion and the fourth radiating portion.

In some embodiments, a first coupling gap is formed between each of the first and second radiating portions and an edge of the metalworking member, a second coupling gap is formed between the second and fifth radiating portions, and a third coupling gap is formed between the fourth and fifth radiating portions.

In some embodiments, the total length of the feed radiating portion and the first radiating portion is approximately equal to 0.5 times the wavelength of the first frequency band.

In some embodiments, the total length of the feed radiating portion and the second radiating portion is approximately equal to 0.5 times the wavelength of the third frequency band.

In some embodiments, the length of the third radiating portion is approximately equal to 0.5 times the wavelength of the fourth frequency band.

In some embodiments, the length of the fourth radiating portion is approximately equal to 0.5 times the wavelength of the second frequency band.

In some embodiments, the sixth radiating portion has a W-shape and includes a first branch, a second branch, and a third branch.

In some embodiments, the length of the second branch is approximately equal to 0.5 times the wavelength of the fifth frequency band, and the length of the third branch is approximately equal to 0.5 times the wavelength of the sixth frequency band.

In some embodiments, the antenna structure further comprises: a metal wall is disposed along the slot of the metalworking member.

In another preferred embodiment, the present invention provides a mobile device, comprising: an upper cover member; a base member connected to the upper cover member; and an antenna structure as described above, formed at a corner of the base member.

The invention provides a novel antenna structure and a corresponding mobile device. Compared with the traditional design, the invention has the advantages of at least small size, wide frequency band, low complexity, low manufacturing cost and the like, so that the invention is very suitable for being applied to various communication devices.

Drawings

Fig. 1 shows a top view of an antenna structure according to an embodiment of the invention.

Fig. 2 shows a circuit diagram of an adjusting circuit according to an embodiment of the invention.

Fig. 3 shows a return loss diagram of an antenna structure according to an embodiment of the invention.

Fig. 4 shows a perspective view of a mobile device according to an embodiment of the invention.

Description of main reference numerals:

100. antenna structure

110. Metal machine component

115. Metal wall

120. Slotted hole

121. First closed end of slot

122. Second closed end of slot

123. Edge of slot

124. Narrower portions of slots

125. Wider portion of slot

130. Feed-in radiation part

131. First end of feed-in radiation part

132. A second end of the feed-in radiation part

140. A first radiation part

141. First end of the first radiation part

142. A second end of the first radiation part

150. A second radiation part

151. First end of the second radiation part

152. A second end of the second radiation part

160. A third radiation part

161. First end of the third radiation part

162. A second end of the third radiation part

170. Fourth radiating part

171. First end of fourth radiating part

172. A second end of the fourth radiation part

180. Fifth radiating part

181. First end of fifth radiating part

182. A second end of the fifth radiation part

190. Sixth radiating part

194. First branch of sixth radiating part

195. A second branch of the sixth radiation part

196. Third branch of sixth radiating part

199. Signal source

200. Adjusting circuit

210. First switcher

220. Second switcher

230. Inductor(s)

400. Mobile device

410. Upper cover element

420. Base element

CC1 first curve

CC2 second curve

CC3 third curve

FB1 first frequency band

FB1A first frequency interval

FB1B second frequency interval

FB1C third frequency interval

FB2 second frequency band

FB3 third frequency band

FB4 fourth frequency band

FB5 fifth frequency band

FB6 sixth frequency band

FP feed point

GC1 first coupling gap

GC2 second coupling gap

GC3 third coupling gap

GP1 first grounding point

GP2 second grounding point

GP3 third grounding point

LS, L1, L2, L3, L4, L5, L6 length

NA adjusting node

VSS ground potential

Width of W1, W2, WS1, WS2

Detailed Description

The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments of the invention.

Certain terms are used throughout the description and claims to refer to particular components. Those of ordinary skill in the art will appreciate that a hardware manufacturer may refer to the same element by different names. The description and claims do not take the form of an element differentiated by name, but rather by functional differences. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The term "substantially" means that within an acceptable error range, a person skilled in the art can solve the technical problem within a certain error range, and achieve the basic technical effect. In addition, the term "coupled" as used herein includes any direct or indirect electrical connection. Accordingly, if a first device couples to a second device, that connection may be through a direct electrical connection, or through an indirect electrical connection via other devices and connections.

The following disclosure provides many different embodiments, or examples, for implementing different features of the disclosure. The following disclosure describes specific examples of various components and arrangements thereof to simplify the description. Of course, these specific examples are not intended to be limiting. For example, if the specification describes a first feature being formed on or over a second feature, that means that it may include embodiments in which the first feature is in direct contact with the second feature, and that additional features may be formed between the first feature and the second feature, such that the first feature and the second feature may not be in direct contact. In addition, the following description may repeat use of the same reference numerals and/or characters in various examples. These repetition are for the purpose of simplicity and clarity and do not in itself dictate a particular relationship between the various embodiments and/or configurations discussed.

Furthermore, spatially relative terms such as "under" …, "below," "lower," "above," "upper," and the like are used for convenience in describing the relationship of one element or feature to another element(s) or feature in the figures. In addition to the orientations depicted in the drawings, the spatially dependent terms are intended to encompass different orientations of the device in use or operation. The device may be turned to a different orientation (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 shows a top view of an antenna structure (Antenna Structure) 100 according to an embodiment of the invention. The antenna structure 100 can be applied to a Mobile Device (Mobile Device), for example: a Smart Phone (Smart Phone), a Tablet Computer (Tablet Computer), a notebook Computer (Notebook Computer). As shown in fig. 1, the antenna structure 100 includes: a metal machine member (Metal Mechanism Element), a feeding radiation portion (Feeding Radiation Element), 130, a first radiation portion (Radiation Element), 140, a second radiation portion 150, a third radiation portion 160, a fourth radiation portion 170, a fifth radiation portion 180, a sixth radiation portion 190, and a Tuning Circuit (Tuning Circuit) 200, wherein the feeding radiation portion 130, the first radiation portion 140, the second radiation portion 150, the third radiation portion 160, the fourth radiation portion 170, the fifth radiation portion 180, and the sixth radiation portion 190 can be made of metal materials, for example: copper, silver, aluminum, iron, or alloys thereof.

The Metal machine component 110 may be a Metal Plate. For example, if the antenna structure 100 is applied to a notebook computer, the metal machine component 110 may be integrated with a Keyboard Frame (Keyboard Frame) or a Base Housing (Base Housing) of the notebook computer, wherein the Keyboard Frame and the Base Housing may be respectively equivalent to "C-piece" and "D-piece" commonly known in the notebook computer field.

In addition, a Slot (Slot) 120 may be formed within the metalization member 110. For example, the Slot 120 of the metalization member 110 may be an L-shaped Closed Slot (Closed Slot) having a first Closed End 121 and a second Closed End 122. In some embodiments, the slot 120 of the metalization member 110 includes a narrower portion 124 adjacent the first closed end 121 and a wider portion 125 adjacent the second closed end 122. It should be noted that the term "close to" or "adjacent to" in the present specification may refer to that the distance between the corresponding elements is smaller than a critical distance (e.g. 10mm or less), and may also include the case that the corresponding elements are in direct contact with each other (i.e. the distance is shortened to 0). It should be noted that the feeding radiation portion 130, the first radiation portion 140, the second radiation portion 150, the third radiation portion 160, the fourth radiation portion 170, the fifth radiation portion 180, and the sixth radiation portion 190 (or vertical projection of these elements) may be disposed in the slot 120 of the metal machine component 110.

The feeding radiation portion 130 may have a substantially straight strip shape. In detail, the Feeding radiation portion 130 has a first end 131 and a second end 132, wherein a Feeding Point FP is located at the first end 131 of the Feeding radiation portion 130. The feed point FP may also be coupled to a Signal Source 199. For example, the signal source 199 may be a Radio Frequency (RF) module, which may be used to excite the antenna structure 100.

The first radiation portion 140 may substantially take a serpentine Shape (e.g.: a U-shape or a J-shape. In detail, the first radiating portion 140 has a first end 141 and a second end 142, wherein the first end 141 of the first radiating portion 140 is coupled to the second end 132 of the feeding radiating portion 130, and a Tuning Node (Tuning Node) NA is located at the second end 142 of the first radiating portion 140. In addition, the tuning circuit 200 is coupled to the tuning node NA, which can be used to fine tune the impedance matching (Impedance Matching) of the antenna structure 100.

The second radiation portion 150 may have a substantially L-shape, wherein a width W2 of the second radiation portion 150 may be greater than a width W1 of the first radiation portion 140. The feeding radiation portion 130 may be interposed between the first radiation portion 140 and the second radiation portion 150. In detail, the second radiating portion 150 has a first End 151 and a second End 152, wherein the first End 151 of the second radiating portion 150 is coupled to the second End 132 of the feeding radiating portion 130, and the second End 152 of the second radiating portion 150 is an Open End (Open End). In some embodiments, each of the first and second radiating portions 140 and 150 may form a first Coupling Gap (GC 1) with an edge 123 of the metalization member 110.

The third radiating portion 160 may have a substantially L-shape, and may be at least partially surrounded by the feeding radiating portion 130 and the second radiating portion 150. In detail, the third radiating portion 160 has a first end 161 and a second end 162, wherein the first end 161 of the third radiating portion 160 is coupled to a first ground Point GP1 on the metal machine component 110, and the second end 162 of the third radiating portion 160 is an open end. For example, both the second end 142 of the first radiating portion 140 and the second end 162 of the third radiating portion 160 may extend in substantially the same direction.

The fourth radiating portion 170 may have a substantially L-shape, which may be at least partially surrounded by the fifth radiating portion 180. In detail, the fourth radiating portion 170 has a first end 171 and a second end 172, wherein the first end 171 of the fourth radiating portion 170 is coupled to a second ground point GP2 on the metal machine member 110, and the second end 172 of the fourth radiating portion 170 is an open end.

The fifth radiating portion 180 may have a substantially L-shape, and may extend between the second radiating portion 150 and the fourth radiating portion 170. In detail, the fifth radiating portion 180 has a first end 181 and a second end 182, wherein the first end 181 of the fifth radiating portion 180 is coupled to a third ground point GP3 on the metal machine component 110, and the second end 182 of the fifth radiating portion 180 is an open end. For example, both the second end 172 of the fourth radiating portion 170 and the second end 182 of the fifth radiating portion 182 may extend in opposite and remote directions from each other. The first ground point GP1, the second ground point GP2, and the third ground point GP3 may be different from each other. In some embodiments, a second coupling gap GC2 may be formed between the second radiation portion 150 and the fifth radiation portion 180, and a third coupling gap GC3 may be formed between the fourth radiation portion 170 and the fifth radiation portion 180.

The sixth radiating portion 190 may generally take on a W shape. In detail, the sixth radiating portion 190 is coupled to the feeding radiating portion 130, wherein the sixth radiating portion 190 includes a first Branch (Branch) 194, a second Branch 195, and a third Branch 196. For example, the first leg 194, the second leg 195, and the third leg 196 may be substantially parallel to each other and may all extend in the same direction. In some embodiments, the second radiation portion 150 is located at one side (e.g., left side) of the feeding radiation portion 130, and the first radiation portion 140 and the sixth radiation portion 190 may be located at the opposite side (e.g., right side) of the feeding radiation portion 130.

In some embodiments, the antenna structure 100 further comprises a Metal Wall (Metal Wall) 115, wherein the Metal Wall 115 may be disposed along the edge 123 of the slot 120 of the metalization member 110. According to the actual measurement result, the metal wall 115 is added to ensure that the antenna structure 100 shares a separate headroom (clear Region), and at the same time, the mutual interference between the antenna structure 100 and the rest of the electronic components of the corresponding mobile device can be reduced. It should be understood that the metal wall 115 is an optional element (Operational Component) and may be removable in other embodiments.

Fig. 2 shows a circuit diagram of an adjusting circuit 200 according to an embodiment of the invention. In the embodiment of fig. 2, the adjusting circuit 200 includes a first Switch Element (Switch Element) 210, a second Switch 220, and an Inductor 230. The first switch 210 has a first end and a second end, wherein the first end of the first switch 210 is coupled to the adjusting node NA on the first radiating portion 140, and the second end of the first switch 210 is coupled to a Ground Voltage (VSS). For example, the ground potential VSS may be provided by the metalization member 110 described above. The second switch 220 has a first end and a second end, wherein the first end of the second switch 220 is coupled to the adjusting node NA, and the second end of the second switch 220 is coupled to the ground potential VSS via the inductor 230. However, the present invention is not limited thereto. In other embodiments, the adjusting circuit 200 may have different circuit structures according to various design requirements.

Fig. 3 shows a Return Loss (Return Loss) diagram of the antenna structure 100 according to an embodiment of the present invention, wherein the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the Return Loss (dB). According to the measurement result of fig. 3, the antenna structure 100 may cover a first Frequency Band (Frequency Band) FB1, a second Frequency Band FB2, a third Frequency Band FB3, a fourth Frequency Band FB4, a fifth Frequency Band FB5, and a sixth Frequency Band FB6. For example, the first frequency band FB1 may be between 617MHz and 960MHz, the second frequency band FB2 may be between 1400MHz and 1500MHz, the third frequency band FB3 may be between 1710MHz and 2690MHz, the fourth frequency band FB4 may be between 3300MHz and 3800MHz, the fifth frequency band FB5 may be between 4200MHz and 4800MHz, and the sixth frequency band FB6 may be between 5100MHz and 6000 MHz. Thus, the antenna structure 100 will support at least sub-6GHz broadband operation of the new generation 5G communication system (5 th GenerationWireless System).

In some embodiments, the principle of operation of the antenna structure 100 may be as follows. The first frequency band FB1 can be further divided into a first frequency band (Frequency Interval) FB1A, a second frequency band FB1B, and a third frequency band FB3, wherein the first frequency band FB1A can be between 617MHz and 690MHz, the second frequency band FB1B can be between 690MHz and 815MHz, and the third frequency band FB1C can be between 815MHz and 960 MHz. If the first switch 210 is open (open) and the second switch 220 is Closed (Closed), the antenna structure 100 can support the first frequency interval FB1A, and the operation characteristics thereof can be shown in a first curve CC1 of fig. 3. If the first switch 210 is turned on and the second switch 220 is turned off, the antenna structure 100 can support the second frequency interval FB1B, and the operation characteristics thereof can be shown as a second curve CC2 in fig. 3. If both the first switch 210 and the second switch 220 are turned off, the antenna structure 100 can support the third frequency interval FB1C, and the operation characteristics thereof can be shown as a third curve CC3 in fig. 3. Therefore, by using the adjusting circuit 200, the antenna structure 100 can completely cover the required operation bandwidth (Operational Bandwidth), especially for the relatively low frequency first band FB1.

In addition, the feeding radiation portion 130, the first radiation portion 140, the second radiation portion 150, the third radiation portion 160, the fourth radiation portion 170, the fifth radiation portion 180, and the sixth radiation portion 190 can excite the remaining second frequency band FB2, the third frequency band FB3, the fourth frequency band FB4, the fifth frequency band FB5, and the sixth frequency band FB6. According to the actual measurement result, the addition of the fifth radiating portion 180 helps to improve the low Frequency Shift (Frequency Shift) of the antenna structure 100, and the first branch 194 of the sixth radiating portion 190 can be used to fine tune the high Frequency impedance matching of the antenna structure 100.

Furthermore, since the feeding radiation portion 130, the first radiation portion 140, the second radiation portion 150, the third radiation portion 160, the fourth radiation portion 170, the fifth radiation portion 180, and the sixth radiation portion 190 are disposed in the slot 120 of the metal machine component 110, the overall size of the antenna structure 100 can be further reduced. That is, the antenna structure 100 may enjoy at least the dual advantages of a small size and a wide frequency band.

In some embodiments, the element dimensions and element parameters of the antenna structure 100 may be as follows. The slot 120 of the metalization member 110 may have a length LS substantially equal to 1 wavelength (1λ) of the first frequency band FB1 of the antenna structure 100. The width WS1 of the narrower portion 124 of the slot 120 may be between 10mm and 14 mm. The width WS2 of the wider portion 125 of the slot 120 may be between 14mm and 18 mm. The total length L1 of the feeding radiation portion 130 and the first radiation portion 140 may be substantially equal to 0.5 times the wavelength (λ/2) of the first frequency band FB1 of the antenna structure 100. The total length L2 of the feeding radiation portion 130 and the second radiation portion 150 may be substantially equal to 0.5 times the wavelength (λ/2) of the third frequency band FB3 of the antenna structure 100. The length L3 of the third radiating portion 160 may be substantially equal to 0.5 times the wavelength (λ/2) of the fourth frequency band FB4 of the antenna structure 100. The length L4 of the fourth radiating portion 170 may be substantially equal to 0.5 times the wavelength (λ/2) of the second frequency band FB2 of the antenna structure 100. In the sixth radiating portion 190, a length L5 of the second leg 195 may be substantially equal to 0.5 times a wavelength (λ/2) of the fifth frequency band FB5 of the antenna structure 100, and a length L6 of the third leg 196 may be substantially equal to 0.5 times a wavelength (λ/2) of the sixth frequency band FB6 of the antenna structure 100. The width of the first coupling gap GC1 may be between 0mm and 10 mm. The width of the second coupling gap GC2 may be between 0.1mm and 1 mm. The width of the third coupling gap GC3 may be between 0.1mm and 1 mm. The Inductance (Inductance) of the inductor 230 may be between 8nH and 16nH, for example: 12nH. The above device dimensions and device parameter ranges are derived from a number of experimental results, which help to optimize the operation bandwidth and impedance matching of the antenna structure 100.

Fig. 4 shows a perspective view of a mobile device 400 according to an embodiment of the invention. In the embodiment of fig. 4, the mobile device 400 is a notebook computer and includes a top cover element (Upper Cover Element) 410, a base element 420, and the antenna structure 100 described above, wherein the base element 420 is connected to the top cover element 410. The antenna structure 100 described above may be formed at any corner of the base member 420. In addition, an Antenna Window (Antenna Window) may be further formed on the base element 420, so as to facilitate the Antenna structure 100 to transmit or receive electromagnetic wave signals (Singal of Electromagnetic Wave). The remaining features of the mobile device 400 of fig. 4 are similar to those of the antenna structure 100 of fig. 1, so that similar operation effects can be achieved in both embodiments.

The invention provides a novel antenna structure and a corresponding mobile device. Compared with the traditional design, the invention has the advantages of at least small size, wide frequency band, low complexity, low manufacturing cost and the like, so that the invention is very suitable for being applied to various communication devices.

It should be noted that the device size, device shape, and frequency range are not limitations of the present invention. The antenna designer may adjust these settings according to different needs. The antenna structure and the mobile device of the present invention are not limited to the states illustrated in fig. 1 to 4. The present invention may include only any one or more features of any one or more of the embodiments of fig. 1-4. In other words, not all of the illustrated features need be implemented in both the antenna structure and the mobile device of the present invention.

Ordinal numbers such as "first," "second," "third," and the like in the description and in the claims are used for distinguishing between two different elements having the same name and not necessarily for describing a sequential order.

While the invention has been described with reference to the preferred embodiments, it should be understood that the invention is not limited thereto, but rather, it should be apparent to one skilled in the art that various changes and modifications can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (20)

1. An antenna structure, the antenna structure comprising:

a metal machine component, in which a slot hole is formed in the metal machine component;

a feed-in radiation part with a feed-in point;

a first radiation part coupled to the feed radiation part;

an adjusting circuit coupled to the first radiating portion;

the second radiation part is coupled to the feed radiation part, and the feed radiation part is arranged between the first radiation part and the second radiation part;

a third radiating portion coupled to a first ground point on the metalworking member;

a fourth radiating portion coupled to a second ground point on the metalworking member;

a fifth radiating portion coupled to a third ground point on the metalworking member; and

a sixth radiating portion coupled to the feed radiating portion;

wherein the feed-in radiation part, the first radiation part, the second radiation part, the third radiation part, the fourth radiation part, the fifth radiation part and the sixth radiation part are all arranged in the slot hole of the metal machine component.

2. The antenna structure of claim 1, wherein the antenna structure covers a first frequency band, a second frequency band, a third frequency band, a fourth frequency band, a fifth frequency band, and a sixth frequency band.

3. The antenna structure of claim 2, wherein the first frequency band is between 617MHz and 960MHz, the second frequency band is between 1400MHz and 1500MHz, the third frequency band is between 1710MHz and 2690MHz, the fourth frequency band is between 3300MHz and 3800MHz, the fifth frequency band is between 4200MHz and 4800MHz, and the sixth frequency band is between 5100MHz and 6000 MHz.

4. The antenna structure of claim 2, wherein the first frequency band is divided into a first frequency range, a second frequency range, and a third frequency range, the first frequency range is between 617MHz and 690MHz, the second frequency range is between 690MHz and 815MHz, and the third frequency range is between 815MHz and 960 MHz.

5. The antenna structure of claim 4, wherein the adjusting circuit comprises:

a first switch having a first end and a second end, wherein the first end of the first switch is coupled to an adjustment node on the first radiating portion, and the second end of the first switch is coupled to a ground potential;

an inductor; and

the second switch is provided with a first end and a second end, wherein the first end of the second switch is coupled to the adjusting node, and the second end of the second switch is coupled to the ground potential through the inductor.

6. The antenna structure of claim 5, wherein:

if the first switch is turned off and the second switch is turned on, the antenna structure can support the first frequency interval;

if the first switch is on and the second switch is off, the antenna structure can support the second frequency interval; and

if the first switch and the second switch are both off, the antenna structure will support the third frequency interval.

7. The antenna structure of claim 2, wherein the slot of the metalorganic member is an L-shaped closed slot and includes a narrower portion and a wider portion.

8. The antenna structure of claim 2, wherein the slot of the metalclad member has a length approximately equal to 1 time wavelength of the first frequency band.

9. The antenna structure of claim 1, wherein the second radiating portion, the third radiating portion, the fourth radiating portion, and the fifth radiating portion each have an L-shape.

10. The antenna structure of claim 1, wherein the width of the second radiating portion is greater than the width of the first radiating portion.

11. The antenna structure of claim 1, wherein the fourth radiating portion is at least partially surrounded by the fifth radiating portion, and the fifth radiating portion extends between the second radiating portion and the fourth radiating portion.

12. The antenna structure of claim 1, wherein each of the first radiating portion and the second radiating portion forms a first coupling gap with an edge of the metalworking member, a second coupling gap is formed between the second radiating portion and the fifth radiating portion, and a third coupling gap is formed between the fourth radiating portion and the fifth radiating portion.

13. The antenna structure of claim 2, wherein the total length of the feed radiation portion and the first radiation portion is approximately equal to 0.5 times the wavelength of the first frequency band.

14. The antenna structure of claim 2, wherein the total length of the feed radiation portion and the second radiation portion is approximately equal to 0.5 times the wavelength of the third frequency band.

15. The antenna structure of claim 2, wherein the length of the third radiating portion is approximately equal to 0.5 times the wavelength of the fourth frequency band.

16. The antenna structure of claim 2, wherein the length of the fourth radiating portion is approximately equal to 0.5 times the wavelength of the second frequency band.

17. The antenna structure of claim 2, wherein the sixth radiating portion has a W-shape and includes a first branch, a second branch, and a third branch.

18. The antenna structure of claim 17, wherein the length of the second branch is approximately equal to 0.5 times the wavelength of the fifth frequency band, and the length of the third branch is approximately equal to 0.5 times the wavelength of the sixth frequency band.

19. The antenna structure of claim 1, further comprising:

a metal wall disposed along the slot of the metal machine component.

20. A mobile device, the mobile device comprising:

an upper cover member;

a base member coupled to the upper cover member; and

the antenna structure of claim 1 formed at a corner of the base element.