CN111355018B - Antenna structure and mobile device - Google Patents

Abstract

An antenna structure and a mobile device. The antenna structure comprises a metal machine component, a grounding element, a first radiation part, a second radiation part and a dielectric substrate. The metal machine component is provided with a slotted hole, wherein a notch is formed at the edge of the metal machine component, and the notch is communicated with the slotted hole; the grounding element is coupled to the metal machine component; the first radiation part is provided with a feed-in point; the second radiating portion is coupled to the first radiating portion and comprises a first extending portion, wherein the second radiating portion extends across the slot, the first extending portion is parallel to the slot, the first extending portion has a vertical projection on the metal machine component, and the vertical projection of the first extending portion at least partially overlaps the slot; the dielectric substrate is adjacent to the metal machine component, wherein the first radiation part and the second radiation part are both arranged on the dielectric substrate. The invention has the advantages of small size, wide frequency band and beautiful appearance, and can be applied to mobile communication devices with narrow frames.

Description

Antenna structures and mobile devices

technical field

The present invention relates to an antenna structure (Antenna Structure), in particular to a mobile device (MobileDevice) and an antenna structure thereof.

Background technique

With the development of mobile communication technology, mobile devices have become more and more common in recent years, such as portable computers, mobile phones, multimedia players and other portable electronic devices with mixed functions. In order to meet people's needs, mobile devices usually have the function of wireless communication. Some cover long-distance wireless communication range, for example: mobile phones use 2G, 3G, LTE (Long Term Evolution) systems and their use of 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz and 2500MHz frequency bands for communication, while Some cover the short-range wireless communication range, for example: Wi-Fi, Bluetooth systems use the 2.4GHz, 5.2GHz and 5.8GHz frequency bands to communicate.

In pursuit of aesthetic appearance, nowadays designers often add elements of metal elements into mobile devices. However, the newly added metal components tend to have a negative impact on the antenna supporting wireless communication in the mobile device, thereby reducing the overall communication quality of the mobile device. Therefore, it is necessary to propose a new mobile device and antenna structure to overcome the problems faced by the conventional technology.

Therefore, it is necessary to provide an antenna structure and a mobile device to solve the above problems.

SUMMARY OF THE INVENTION

In a preferred embodiment, the present invention provides an antenna structure, the antenna structure includes: a metal mechanism member, the metal mechanism member has a slot, wherein a notch is formed at an edge of the metal mechanism member, and the metal mechanism member is The gap and the slot are communicated with each other; a grounding element, the grounding element is coupled to the metal structure part; a first radiating part, the first radiating part has a feeding point; a second radiating part, the second radiating part The first radiating portion is coupled to the first radiating portion and includes a first extending portion, wherein the second radiating portion extends across the slot, the first extending portion is parallel to the slot, and the first extending portion is in the metal mechanism There is a vertical projection on the member, and the vertical projection of the first extension portion at least partially overlaps the slot hole; and a dielectric substrate, the dielectric substrate is adjacent to the metal mechanism member, wherein the first radiating portion and the second The radiation parts are all arranged on the dielectric substrate.

In some embodiments, the metal mechanism member is a side wall of a mobile device.

In some embodiments, the mobile device is a notebook computer.

In some embodiments, the slot has a straight bar shape.

In some embodiments, the slot is a closed slot having a first closed end and a second closed end.

In some embodiments, the ground element is a ground copper foil, and extends from the metal structure to the dielectric substrate.

In some embodiments, the first radiation portion presents a straight bar shape.

In some embodiments, the first radiation portion has an unequal width structure.

In some embodiments, the first radiating portion includes a narrower portion and a wider portion, the wider portion has a vertical projection on the metal mechanism member, and the vertical projection of the wider portion corresponds to the slot hole at least partially overlap.

In some embodiments, the second radiation portion presents an L-shape.

In some embodiments, the antenna structure further includes: a third radiating portion coupled to the first radiating portion, wherein the third radiating portion extends across the slot and includes a second extending portion, the second extending Partly parallel to the slotted hole, the second extending portion has a vertical projection on the metal mechanism member, and the vertical projection of the second extending portion at least partially overlaps the slotted hole.

In some embodiments, the third radiating portion presents an L-shape.

In some embodiments, the second radiating portion and the third radiating portion extend in substantially opposite directions.

In some embodiments, the third radiating portion has a vertical projection on the edge of the metal mechanism member, and the vertical projection of the third radiating portion at least partially overlaps the notch.

In some embodiments, the antenna structure operates in a first frequency band and a second frequency band, the first frequency band is between 2400MHz and 2500MHz, and the second frequency band is between 5150MHz and 5850MHz.

In some embodiments, there is a first distance between the notch and the first closed end of the slot, and the first distance is approximately equal to 0.25 wavelengths of the first frequency band.

In some embodiments, there is a second distance between the gap and the second closed end of the slot, and the second distance is approximately equal to 0.25 times the wavelength of the second frequency band.

In some embodiments, the width of the notch is between 1 mm and 3 mm.

In another preferred embodiment, the present invention provides a mobile device, the mobile device includes: a main body, the main body includes a frame and a casing; a metal mechanism member, the metal mechanism member is coupled to the frame and the Between the shells, there is a slot hole, wherein a notch is formed at an edge of the metal mechanism member, and the notch and the slot hole communicate with each other; a grounding element, the grounding element is coupled to the metal mechanism member; a a first radiating part, the first radiating part has a feeding point; a second radiating part, the second radiating part is coupled to the first radiating part, wherein the second radiating part extends across the slot; and a A dielectric substrate, the dielectric substrate is adjacent to the metal mechanism component, wherein the first radiation portion and the second radiation portion are both disposed on the dielectric substrate; wherein the metal mechanism component, the grounding element, the first radiation portion, the The second radiation portion and the dielectric substrate together form an antenna structure.

In some embodiments, the housing defines an antenna window.

The present invention proposes a novel antenna structure that can cover wide-band operation with only a single slot with a notch. When the antenna structure is applied to a mobile device having a metal mechanism, since the metal mechanism can be regarded as an extension of the antenna structure, the metal mechanism can effectively avoid negative effects on the communication quality of the mobile device. All in all, the present invention can achieve the advantages of small size, wide frequency band, and beautify the appearance of the device, so it is very suitable for application in various mobile communication devices with narrow bezels.

Description of drawings

FIG. 1A shows a top view of an antenna structure according to an embodiment of the present invention.

FIG. 1B shows a top view of a metal mechanism component according to an embodiment of the present invention.

FIG. 1C shows a cross-sectional view of an antenna structure according to an embodiment of the present invention.

1D shows a cross-sectional view of an antenna structure according to an embodiment of the present invention.

FIG. 2 shows a voltage standing wave ratio diagram of an antenna structure according to an embodiment of the present invention.

FIG. 3 shows a top view of an antenna structure according to another embodiment of the present invention.

FIG. 4 shows a voltage standing wave ratio diagram of an antenna structure according to another embodiment of the present invention.

FIG. 5 shows a perspective view of a mobile device according to an embodiment of the present invention.

FIG. 6 shows a perspective view of a mobile device according to another embodiment of the present invention.

Explanation of main component symbols:

100 Antenna Structure

110 Metal parts

111 Edges of metal machine parts

120 slotted holes

121 First closed end of slotted hole

122 Second closed end of slotted hole

123 Longer part of slotted hole

124 Longer part of slotted hole

130 Notch

140 Ground element

150, 350 The first radiation part

151, 351 The first end of the first radiation part

152, 352 The second end of the first radiation part

160 Second Radiation Department

161 The first end of the second radiating part

162 The second end of the second radiating part

165 The first extension of the second radiating portion

170 Dielectric substrate

180 Plastic Support Elements

190 sources

353 Narrower part of the first radiating part

354 The wider part of the first radiating part

380 Third Radiation Department

381 The first end of the third radiating part

382 The second end of the third radiating part

385 The second extension of the third radiator

500, 600 mobile units

510, 610 body

511, 611 border

512, 612 housing

515, 615 Antenna window

520 cover

530 Spindle element

CP1 first connection point

CP2 second connection point

D1 first distance

D2 second distance

D3 third distance

The first surface of the E1 dielectric substrate

The first surface of the E2 dielectric substrate

FB1, FB3 first frequency band

FB2, FB4 Second Band

FP feed point

GC1 coupling gap

LC1, LC2 hatching

PT1 vertical projection

W1, W2, W3, W4 width

Detailed ways

In order to make the objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are exemplified below, and are described in detail as follows in conjunction with the accompanying drawings.

Certain terms are used in the specification and claims to refer to particular elements. It should be understood by those skilled in the art that hardware manufacturers may refer to the same element by different nouns. The description and claims do not use the difference in name as a way to distinguish elements, but use the difference in function of the elements as a criterion for distinguishing. The words "comprising" and "including" mentioned throughout the specification and claims are open-ended terms and should be interpreted as "including but not limited to". The word "substantially" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and achieve the basic technical effect. Furthermore, the term "coupled" in this specification includes any direct and indirect means of electrical connection. Therefore, if a first device is described as being coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connecting means. Second device.

FIG. 1A shows a top view of an antenna structure 100 according to an embodiment of the present invention. The antenna structure 100 can be applied to a mobile device, such as a smart phone, a tablet computer, or a notebook computer. In the embodiment of FIG. 1A , the antenna structure 100 at least includes: a Metal Mechanism Element 110 , a Ground Element 140 , a first Radiation Element 150 , and a second Radiation Element 160, and a dielectric substrate 170, wherein the ground element 140, the first radiating part 150, and the second radiating part 160 can be made of metal materials, such as copper, silver, aluminum, iron, or alloys thereof . FIG. 1B shows a top view of the metal mechanism member 110 according to an embodiment of the present invention. FIG. 1C shows a cross-sectional view of the antenna structure 100 according to an embodiment of the present invention (along a cross-sectional line LC1 in FIG. 1A ). FIG. 1D shows a cross-sectional view of the antenna structure 100 according to an embodiment of the present invention (along another cross-sectional line LC2 in FIG. 1A ). Please refer to FIG. 1A , FIG. 1B , FIG. 1C , and FIG. 1D together to understand the present invention.

The metal mechanism member 110 may be a side wall of the mobile device. In some embodiments, the metal mechanism member 110 is coupled between a frame and a housing of a body of the mobile device, but it is not limited thereto. The metal mechanism member 110 has a slot (Slot) 120, wherein a notch (Notch) 130 is formed at an edge 111 of the metal mechanism member 110, and the notch 130 and the slot hole 120 communicate with each other, so that the notch 130 and the slot hole 120 A combination of can roughly present an inverted T shape. The slot 120 of the metal mechanism component 110 may be substantially in the shape of a straight bar. Specifically, the slot 120 belongs to a closed slot with both ends closed, and has a first closed end 121 and a second closed end 122 that are far away from each other. The slot 120 can be divided into a longer portion 123 and a shorter portion 124 by the notch 130 , wherein the longer portion 123 is adjacent to the first closed end 121 and the shorter portion 124 is adjacent to the second closed end 122 . In some embodiments, the antenna structure 100 further includes a non-conductive material (not shown) filled in the slot 120 and the notch 130 of the metal mechanism member 110 .

The dielectric substrate 170 may be an FR4 (Flame Retardant 4) substrate, a Printed Circuit Board (PCB), or a Flexible Circuit Board (FCB). The dielectric substrate 170 has a first surface E1 and a second surface E2 opposite to each other, wherein the first radiation part 150 and the second radiation part 160 are both disposed on the first surface E1 of the dielectric substrate 170 , and the second surface E1 of the dielectric substrate 170 Surface E2 is adjacent to slot 120 of metal mechanism member 110 . It must be noted that the term "adjacent" or "adjacent" in this specification may mean that the distance between the corresponding two elements is less than a predetermined distance (for example: 5mm or shorter), and may also include two corresponding elements in direct contact with each other. case (ie, the aforementioned pitch is shortened to 0).

In some embodiments, the antenna structure 100 further includes a Plastic Supporting Element 180 . The plastic supporting element 180 is disposed on the metal structure member 110 and can be used for supporting and fixing the dielectric substrate 170 . It must be noted that the plastic support element 180 is an optional element. In other embodiments, the plastic support element 180 is removed from the antenna structure 100 , and the second surface E2 of the dielectric substrate 170 is directly attached to the metal structure member 110 . The grounding element 140 can be a ground copper foil (Ground Copper Foil), which can have a stepped shape (as shown in FIG. 1D ). For example, the grounding element 140 may be coupled to the metal mechanism member 110 and then extend from the metal mechanism member 110 to the first surface E1 of the dielectric substrate 170 .

The first radiating portion 150 may be substantially in a straight bar shape, and may be substantially parallel to the slot hole 120 . The first radiating part 150 has a first end 151 and a second end 152 that are far away from each other, wherein a feeding point (Feeding Point) FP is located at the first end 151 of the first radiating part 150 , and the first radiating part 150 The second end 152 is an open end. The feeding point FP can be coupled to a positive electrode of a signal source 190 , and a negative electrode of the signal source 190 can be coupled to the ground element 140 . For example, the signal source 190 can be a radio frequency (RF) module, which can be used to excite the antenna structure 100 . The first radiating portion 150 may be an equal-width structure, wherein the first radiating portion 150 has a vertical projection on the metal structure member 110 . In some embodiments, the vertical projection of the first radiation portion 150 does not overlap with the slot hole 120 at all. In other embodiments, the vertical projection of the first radiation portion 150 at least partially overlaps the slot hole 120 .

The second radiating portion 160 may be substantially L-shaped. The second radiating part 160 has a first end 161 and a second end 162 , wherein the first end 161 of the second radiating part 160 is coupled to a first connection point (Connection Point) CP1 on the first radiating part 150 , The second end 162 of the second radiation portion 160 is an open end. The first connection point CP1 is located between the first end 151 and the second end 152 of the first radiation part 150 , wherein the first connection point CP1 is closer to the first end 151 than the second end 152 . In other embodiments, the first connection point CP1 can also be changed to be further away from the first end 151 than the second end 152 . The second end 152 of the first radiating part 150 and the second end 162 of the second radiating part 160 may extend in substantially the same direction. The second radiating part 160 may be partially perpendicular to the first radiating part 150 and partially parallel to the first radiating part 150 . The second radiating portion 160 extends across the slot 120 of the metal mechanism member 110 . That is, the second radiating portion 160 has a vertical projection on the metal mechanism member 110 , wherein the vertical projection of the second radiating portion 160 at least partially overlaps with the slot hole 120 . In some embodiments, the second radiating portion 160 includes a first extending portion 165 that is substantially parallel to the slot 120 . The first extension portion 165 of the second radiating portion 160 has a vertical projection on the metal mechanism member 110 , wherein the vertical projection of the first extension portion 165 at least partially overlaps the slot hole 120 .

FIG. 2 shows a voltage standing wave ratio (VSWR) diagram of the antenna structure 100 according to an embodiment of the present invention. As shown in FIG. 2, the antenna structure 100 can operate in a first frequency band FB1 and a second frequency band FB2, wherein the first frequency band FB1 can be between 2400MHz and 2500MHz, and the second frequency band FB2 can be between 5150MHz to 5850MHz. Therefore, the antenna structure 100 can at least support WLAN (Wireless Local Area Networks) 2.4GHz/5GHz broadband operation. According to the actual measurement results, the radiation efficiency (Radiation Efficiency) of the antenna structure 100 in the first frequency band FB1 can reach about -1.94dB, and the radiation efficiency of the antenna structure 100 in the second frequency band FB2 can reach about -4.18dB. It can meet the practical application requirements of general mobile communication devices.

In some embodiments, the principle of operation of the antenna structure 100 may be as follows. The metal structure member 110 and its slot 120 are jointly excited by the first radiating portion 150 and the second radiating portion 160 to form the aforementioned dual-frequency operating band. Specifically, the longer portion 123 of the slot 120 is between the gap 130 and the first closed end 121 , which can generate the aforementioned first frequency band FB1 ; and the shorter portion 124 of the slot 120 is between the gap 130 and the first closed end 121 Between the second closed ends 122, it can be excited to generate the aforementioned second frequency band FB2. The first radiating part 150 can be used to fine-tune the impedance matching (Impedance Matching) of the first frequency band FB1, and the second radiating part 160 can be used to fine-tune the impedance matching of the second frequency band FB2. According to actual measurement results, the addition of the notch 130 can effectively shorten the total length of the slot 120 (about 25% shorter than the conventional slot), which helps to minimize the overall size of the antenna structure 100 .

In some embodiments, the element dimensions of the antenna structure 100 may be as follows. A specific resonance path is formed from the feeding point FP through the first connection point CP1 to the second end 162 of the second radiating portion 160 , and the total length thereof may be between 11 mm and 15.5 mm. There is a first distance D1 between the notch 130 and the first closed end 121 of the slot 120 (ie, the length of the longer portion 123 of the slot 120 ), wherein the first distance D1 may be approximately equal to 0.25 of the first frequency band FB1 times the wavelength (λ/4). There is a second distance D2 between the notch 130 and the second closed end 122 of the slot 120 (ie, the length of the shorter portion 124 of the slot 120 ), wherein the second distance D2 may be approximately equal to 0.25 of the second frequency band FB2 times the wavelength (λ/4). The ratio ( D1 / D2 ) between the first distance D1 and the second distance D2 may be between 2 and 3. A coupling gap (Coupling Gap) GC1 is formed between the metal mechanism component 110 and the second radiating part 160 (or the first radiating part 150 ), wherein the width of the coupling gap GC1 may be less than 3 mm. The length of the first radiation portion 150 (ie, the length from the first end 151 to the second end 152 ) may be between 15 mm and 20 mm (eg, about 17.5 mm). The length of the second radiation portion 160 (ie, the length from the first end 161 to the second end 162 ) may be between 8 mm and 12 mm (eg, about 10 mm). The width W1 of the slot hole 120 may be between 2 mm and 2.5 mm. The width W2 of the notch 130 may be approximately between 1 mm and 3 mm. The parameter ranges of the above components are calculated according to multiple experimental results, which help to optimize the operation bandwidth and impedance matching of the antenna structure 100 .

FIG. 3 shows a top view of an antenna structure 300 according to another embodiment of the present invention. Figure 3 is similar to Figure 1A. In the embodiment of FIG. 3 , the antenna structure 300 further includes a third radiating portion 380 , which can be made of a metal material, and a first radiating portion 350 of the antenna structure 300 has an unequal width structure. The third radiating portion 380 may be substantially L-shaped. The third radiation part 380 has a first end 381 and a second end 382 , wherein the first end 381 of the third radiation part 380 is coupled to a second connection point CP2 on the first radiation part 350 , and the third radiation The second end 382 of the portion 380 is an open end. The second connection point CP2 is different from the aforementioned first connection point CP1, wherein the second connection point CP2 is adjacent to the feeding point FP. The second end 382 of the third radiating part 380 and the second end 162 of the second radiating part 160 may extend substantially in opposite directions. The third radiating part 380 may be partially perpendicular to the first radiating part 350 and partially parallel to the first radiating part 350 . The third radiating portion 380 extends across the slot 120 of the metal mechanism member 110 . In addition, the third radiating portion 380 has a vertical projection PT1 on the edge 111 of the metal structure member 110 , wherein the vertical projection PT1 of the third radiating portion 380 may at least partially overlap with the notch 130 . In some embodiments, the second end 382 of the third radiating portion 380 also extends across the entire gap 130 . The length of the third radiating portion 380 (ie, the length from the first end 381 to the second end 382 ) may be between 5 mm and 10 mm (eg, about 7 mm). The length of the first radiating part 350 may be greater than that of the second radiating part 160 , and the length of the second radiating part 160 may be greater than that of the third radiating part 380 . There is a third distance D3 between the third radiation portion 380 and the second radiation portion 160 , wherein the third distance D3 may be between 1 mm and 3 mm (eg, 2 mm). In some embodiments, the third radiating portion 350 includes a second extending portion 385 that is substantially parallel to the slot 120 . The second extending portion 385 of the third radiating portion 350 has a vertical projection on the metal mechanism member 110 , wherein the vertical projection of the second extending portion 385 at least partially overlaps the slot hole 120 .

The first radiating portion 350 has a first end 351 and a second end 352, and includes a narrower portion 353 and a wider portion 354, wherein the narrower portion 353 is adjacent to the first end 351, and the wider portion 354 is adjacent to the first end 351. The second end 352. In detail, the narrower portion 353 of the first radiating portion 350 has a vertical projection on the metal mechanism member 110 , wherein the vertical projection of the narrower portion 353 does not overlap the slot 120 at all, while the wider first radiating portion 350 has a vertical projection. Portion 354 has a vertical projection on metal mechanism member 110 , wherein the vertical projection of wider portion 354 at least partially overlaps slot 120 . The width W3 of the narrow portion 353 of the first radiating portion 350 may be approximately between 1 mm and 1.5 mm (eg, 1.2 mm). The width W4 of the wider portion 354 of the first radiating portion 350 may be approximately between 1.5 mm and 2 mm (eg, 1.7 mm). The ratio between the width W4 and the width W3 (W4/W3) may be between 1.2 and 2. The parameter ranges of the above components are calculated based on multiple experimental results, which help to optimize the operating bandwidth and impedance matching of the antenna structure 300 .

FIG. 4 shows a voltage standing wave ratio diagram of the antenna structure 300 according to another embodiment of the present invention. As shown in FIG. 4, the antenna structure 300 can operate in a first frequency band FB3 and a second frequency band FB4, wherein the first frequency band FB3 can be between 2400MHz and 2500MHz, and the second frequency band FB4 can be between 5150MHz and 5850MHz. between. Therefore, the antenna structure 100 can support at least broadband operation of WLAN 2.4GHz/5GHz. According to the actual measurement results, the radiation efficiency of the antenna structure 300 in the first frequency band FB3 can reach about -2dB, and the radiation efficiency of the antenna structure 300 in the second frequency band FB4 can reach about -2.4dB, which can meet the requirements of general mobile communication The actual application requirements of the device. In terms of antenna principle, the unequal width structure of the first radiating portion 350 can provide an additional current path to increase the operating bandwidth and radiation efficiency of the first frequency band FB3; and the addition of the third radiating portion 380 can generate additional current paths. In order to increase the operating bandwidth and radiation efficiency of the second frequency band FB4. The remaining features of the antenna structure 300 of FIG. 3 are similar to those of the antenna structure 100 of FIGS. 1A , 1B, 1C, and 1D, so the two embodiments can achieve similar operating effects.

FIG. 5 shows a perspective view of a mobile device 500 according to an embodiment of the present invention. In the embodiment of FIG. 5 , the mobile device 500 is a notebook computer, which includes a main body 510 , an upper cover 520 , and a hinge element 530 . The hinge element 530 is connected between the main body 510 and the upper cover 520 , so that the mobile device 500 can operate in an open mode or a closed mode. In detail, the body 510 includes a frame 511 and a casing 512 opposite to each other, which can be regarded as "C-piece" and "D-piece" commonly known in the field of notebook computers, respectively. The frame 511 can be a keyboard frame, so a keyboard can be embedded in the frame 511 . The metal mechanism 110 can be a side wall of the mobile device 500 , which can be coupled between the frame 511 and the housing 512 , so that the aforementioned antenna structure 100 (or 300 ) can be integrated with the mobile device 500 . The structures and functions of the antenna structure 100 (or 300 ) have been described in the embodiments of FIGS. 1A to 4 , and will not be repeated here. In some embodiments, the casing 512 further defines an antenna window (Antenna Window) 515, which is filled with non-conductive material to avoid the radiation pattern of the antenna structure 100 (or 300) caused by the metal part of the casing 512. interference. Such an integrated design can fully utilize the side space of the mobile device 500, thereby minimizing the overall antenna size.

FIG. 6 shows a perspective view of a mobile device 600 according to another embodiment of the present invention. In the embodiment of FIG. 6 , the mobile device 600 is a tablet computer, which includes a body 610 . In detail, the body 610 includes a frame 611 and a casing 612 opposite to each other. The frame 611 can be a display frame, so a display (DisplayDevice) can be embedded in the frame 611 . The metal mechanism 110 can be a side wall of the mobile device 600 , which can be coupled between the frame 611 and the housing 612 , so that the aforementioned antenna structure 100 (or 300 ) can be integrated with the mobile device 600 . The structures and functions of the antenna structure 100 (or 300 ) have been described in the embodiments of FIGS. 1A to 4 , and will not be repeated here. In some embodiments, the housing 612 also has an antenna window 615 filled with non-conductive material to prevent the metal part of the housing 612 from interfering with the radiation pattern of the antenna structure 100 (or 300 ). Such an integrated design can fully utilize the side space of the mobile device 600, thereby minimizing the overall antenna size.

The present invention proposes a novel antenna structure that can cover wide-band operation with only a single slot with a notch. When the antenna structure is applied to a mobile device having a metal mechanism, since the metal mechanism can be regarded as an extension of the antenna structure, the metal mechanism can effectively avoid negative effects on the communication quality of the mobile device. All in all, the present invention can achieve the advantages of small size, wide frequency band, and beautify the appearance of the device, so it is very suitable for mobile communication devices with various narrow borders.

It should be noted that the above-mentioned component size, component shape, and frequency range are not limitations of the present invention. Antenna designers can adjust these settings according to different needs. The antenna structure and mobile device of the present invention are not limited to the states illustrated in FIGS. 1A-6 . The present invention may include only any one or more features of any one or more of the embodiments of FIGS. 1A-6 . In other words, not all of the illustrated features need to be implemented in both the antenna structure and the mobile device of the present invention.

The ordinal numbers in this specification and the claims, such as "first", "second", "third", etc., do not have a sequential relationship with each other, and are only used to indicate and distinguish two identical different elements of the name.

Although the present invention is disclosed above with preferred embodiments, it is not intended to limit the scope of the present invention. Any person of ordinary skill in the art should be able to make some changes without departing from the spirit and scope of the present invention. and modifications, therefore the scope of protection of the present invention should be defined by the appended claims.

Claims (18)

1. An antenna structure, comprising:

a metal machine component, which has a slot, wherein a notch is formed at an edge of the metal machine component, and the notch and the slot are communicated with each other;

a grounding element coupled to the metal machine component;

a first radiation part, which is provided with a feed-in point;

a second radiating portion coupled to the first radiating portion and including a first extending portion, wherein the second radiating portion extends across the slot, the first extending portion is parallel to the slot, the first extending portion has a vertical projection on the metal machine member, and the vertical projection of the first extending portion at least partially overlaps the slot; and

a dielectric substrate adjacent to the metal machine component, wherein the first radiation part and the second radiation part are both disposed on the dielectric substrate;

the slot is in a straight strip shape and is provided with a first closed end and a second closed end, the notch is arranged between the first closed end and the second closed end, and the distance from the notch to the first closed end and the distance from the notch to the second closed end are unequal.

2. The antenna structure of claim 1 wherein the metal machine component is a sidewall of a mobile device.

3. The antenna structure of claim 2 wherein the mobile device is a notebook computer.

4. The antenna structure of claim 1 wherein the grounding element is a grounding copper foil and extends from the metal frame member to the dielectric substrate.

5. The antenna structure according to claim 1, wherein the first radiating portion has a straight strip shape.

6. The antenna structure of claim 1, wherein the first radiating portion has a non-uniform width structure.

7. The antenna structure of claim 6 wherein the first radiating portion includes a narrower portion and a wider portion, the wider portion having a perpendicular projection on the metal frame member, the perpendicular projection of the wider portion at least partially overlapping the slot.

8. The antenna structure of claim 1, wherein the second radiating portion has an L-shape.

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

a third radiating portion coupled to the first radiating portion, wherein the third radiating portion extends across the slot and includes a second extending portion, the second extending portion is parallel to the slot, the second extending portion has a vertical projection on the metal machine component, and the vertical projection of the second extending portion at least partially overlaps the slot.

10. The antenna structure of claim 9, wherein the third radiating portion has an L-shape.

11. The antenna structure of claim 9, wherein the second radiating portion and the third radiating portion extend in substantially opposite directions.

12. The antenna structure of claim 9, wherein the third radiating portion has a vertical projection on the edge of the metal machine component, and the vertical projection of the third radiating portion at least partially overlaps the notch.

13. The antenna structure of claim 1 wherein the antenna structure operates in a first frequency band between 2400MHz and 2500MHz and a second frequency band between 5150MHz and 5850 MHz.

14. The antenna structure of claim 13 wherein the notch and the first closed end of the slot have a first distance therebetween, the first distance being substantially equal to 0.25 wavelengths of the first frequency band.

15. The antenna structure of claim 13, wherein a second distance is between the notch and the second closed end of the slot, and the second distance is substantially equal to 0.25 times the wavelength of the second frequency band.

16. The antenna structure of claim 1 wherein the width of the gap is between 1mm and 3 mm.

17. A mobile device, comprising:

a body, the body including a frame and a housing;

a metal machine component coupled between the frame and the housing and having a slot, wherein a notch is formed at an edge of the metal machine component, and the notch and the slot are communicated with each other;

a grounding element coupled to the metal machine component;

a first radiation part having a feed point;

a second radiating portion coupled to the first radiating portion, wherein the second radiating portion extends across the slot; and

a dielectric substrate adjacent to the metal machine component, wherein the first radiation part and the second radiation part are both arranged on the dielectric substrate;

wherein the metal machine component, the grounding element, the first radiation part, the second radiation part and the dielectric substrate form an antenna structure together;

the slot is in a straight strip shape and is provided with a first closed end and a second closed end, the notch is arranged between the first closed end and the second closed end, and the distance from the notch to the first closed end and the distance from the notch to the second closed end are not equal.

18. The mobile device of claim 17 wherein the housing defines an antenna window.

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