Mobile device supporting broadband operation

Abstract

The invention discloses a mobile device supporting broadband operation. The mobile device comprises a first metal machine component, a dielectric substrate, a first feed-in radiation part, a second feed-in radiation part, a grounding element and a second metal machine component, the first metal machine component includes a main portion and a sidewall portion. The side wall part of the first metal machine component is provided with a first slotted hole. The dielectric substrate is adjacent to a sidewall portion of the first metal machine component. Both the first feed-in radiation portion and the second feed-in radiation portion can extend across the first slot of the first metal mechanism component. The first slotted hole of the first metal mechanism component, the dielectric substrate, the first feed-in radiation part, the second feed-in radiation part and the grounding element can jointly form an antenna structure. The second metal machine component is disposed relative to a main portion of the first metal machine component. The second metal machine component is provided with a second slotted hole.

Description

Technical Field

[0001] The present invention relates to a mobile device, and in particular to a mobile device capable of supporting broadband operation. Background Art

[0002] With the development of mobile communication technology, mobile devices have become increasingly popular in recent years, such as laptop computers, mobile phones, multimedia players and other hybrid portable electronic devices. In order to meet people's needs, mobile devices usually have the function of wireless communication. Some cover long-distance wireless communication ranges, such as mobile phones using 2G, 3G, LTE (Long Term Evolution) systems and the 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz and 2500MHz frequency bands used for communication, while some cover short-distance wireless communication ranges, such as Wi-Fi, Bluetooth systems use 2.4GHz, 5.2GHz and 5.8GHz frequency bands for communication.

[0003] Antennas are indispensable components in the field of wireless communications. If the operational bandwidth of an antenna used to receive or transmit signals is too narrow, it is easy to cause the communication quality of the mobile device to deteriorate. Therefore, how to design a small-sized, wide-bandwidth antenna structure is an important issue for designers. Summary of the invention

[0004] In a preferred embodiment, the present invention provides a mobile device supporting broadband operation, comprising: a first metal structure, including a main part and a side wall part, wherein the side wall part has a first slot; a dielectric substrate, adjacent to the side wall part of the first metal structure; a first feeding radiation part, coupled to a feeding point, and extending across the first slot of the first metal structure; a second feeding radiation part, coupled to the feeding point, and extending across the first slot of the first metal structure, wherein the first feeding radiation part and the second feeding radiation part are both disposed on the dielectric substrate; a grounding element, coupled to the main part of the first metal structure, wherein the first slot of the first metal structure, the dielectric substrate, the first feeding radiation part, the second feeding radiation part, and the grounding element together form an antenna structure; and a second metal structure, disposed relative to the main part of the first metal structure, wherein the second metal structure has a second slot.

[0005] In some embodiments, the first slot of the first metal structure component is a first closed slot, the second slot of the second metal structure component is a second closed slot, and the first closed slot and the second closed slot are substantially parallel to each other.

[0006] In some embodiments, an angle is formed between the first feeding radiation portion and the second feeding radiation portion, and the angle is between 30 degrees and 90 degrees.

[0007] In some embodiments, the antenna structure covers a first frequency band, a second frequency band, and a third frequency band, the first frequency band is between 2400 MHz and 2500 MHz, the second frequency band is between 5150 MHz and 5850 MHz, and the third frequency band is between 5925 MHz and 7125 MHz.

[0008] In some embodiments, a length of the first slot of the first metal structure component is substantially equal to 0.5 times the wavelength of the first frequency band.

[0009] In some embodiments, a length of the second slot of the second metal structure component is substantially equal to 0.5 times the wavelength of the first frequency band.

[0010] In some embodiments, the length of the first feeding radiation portion is substantially equal to 0.25 times the wavelength of the third frequency band.

[0011] In some embodiments, the length of the second feeding radiation portion is substantially equal to 0.25 times the wavelength of the third frequency band.

[0012] In some embodiments, the mobile device further includes: a non-conductive supporting element filled in the first slot of the first metal structure component, wherein the non-conductive supporting element is used to support the dielectric substrate.

[0013] In some embodiments, the second metal structure component further has an inward-cut design and is not parallel to the main portion of the first metal structure component. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a cross-sectional view showing a mobile device according to an embodiment of the present invention.

[0015] Figure 2 FIG. 4 is a partial view showing a mobile device according to an embodiment of the present invention.

[0016] Figure 3 FIG. 4 is another partial view showing a mobile device according to an embodiment of the present invention.

[0017] Figure 4 is a three-dimensional diagram showing a mobile device according to an embodiment of the present invention.

[0018] Figure 5 FIG. 4 is a radiation gain diagram showing an antenna structure of a mobile device according to an embodiment of the present invention.

[0019] Figure 6 is a cross-sectional view showing a mobile device according to an embodiment of the present invention.

[0020] Figure 7 is a three-dimensional diagram showing a notebook computer according to an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 100,600: Mobile devices

[0023] 110: First metal structure component

[0024] 120: Main part of the first metal structure component

[0025] 130: Side wall portion of the first metal structure component

[0026] 140: First slot of the first metal structure component

[0027] 141: First closed end of the first slot

[0028] 142: Second closed end of the first slot

[0029] 150: Dielectric substrate

[0030] 160: First feeding radiation part

[0031] 161: first end of the first feeding radiation portion

[0032] 162: The second end of the first feeding radiation portion

[0033] 165: Second feeding radiation part

[0034] 166: first end of the second feeding radiation portion

[0035] 167: The second end of the second feeding radiation portion

[0036] 170: Grounding element

[0037] 180,680: Second metal mechanism component

[0038] 190,690: The second slot of the second metal mechanism component

[0039] 191: First closed end of the second slot

[0040] 192: Second closed end of the second slot

[0041] 199: Signal Source

[0042] 645: Non-conductive support element

[0043] 685: Inner cutting design

[0044] 700: Laptop

[0045] 710: Upper cover shell

[0046] 720: Display frame

[0047] 730: Keyboard border

[0048] 740: Base shell

[0049] 761: First position

[0050] 762: Second position

[0051] D1: Spacing

[0052] E1: The first surface of the dielectric substrate

[0053] E2: Second surface of dielectric substrate

[0054] FP: Feed Point

[0055] L1, L2, L3, L4: Length

[0056] W1, W2, W3, W4: Width

[0057] θ: Angle DETAILED DESCRIPTION

[0058] In order to make the purpose, features and advantages of the present invention more clearly understood, specific embodiments of the present invention are given below and described in detail with reference to the accompanying drawings.

[0059] Certain words are used in the specification and claims to refer to specific components. It should be understood by those skilled in the art that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. The words "including" and "comprising" 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. In addition, the word "coupled" in this specification includes any direct and indirect electrical connection means. Therefore, if the text describes a first device 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 via other devices or connection means.

[0060] The following disclosure provides many different embodiments or examples to implement the different features of the present disclosure. The following disclosure describes specific examples of various components and their arrangements to simplify the description. Of course, these specific examples are not intended to be limiting. For example, if the present disclosure describes a first feature formed on or above a second feature, it means that it may include an embodiment in which the first feature and the second feature are in direct contact, and may also include an embodiment in which an additional feature is formed between the first feature and the second feature, so that the first feature and the second feature may not be in direct contact. In addition, different examples in the following disclosure may reuse the same reference symbols and / or marks. These repetitions are for the purpose of simplification and clarity, and are not intended to limit the specific relationship between the different embodiments and / or structures discussed.

[0061] In addition, spatially related terms such as "below," "below," "lower," "above," "higher," and similar terms are used to facilitate description of the relationship between one element or feature and another element or features in the figure. In addition to the orientation shown in the drawings, these spatially related terms are intended to include different orientations of the device in use or operation. The device may be turned to different orientations (rotated 90 degrees or other orientations), and the spatially related terms used herein may be interpreted in the same manner.

[0062] Figure 1 1 is a cross-sectional view of a mobile device 100 according to an embodiment of the present invention. For example, the mobile device 100 may be a smart phone, a tablet computer, or a notebook computer. Figure 1As shown, the mobile device 100 includes: a first metal mechanism element 110, a dielectric substrate 150, a first feeding radiation element 160, a second feeding radiation element 165, a ground element 170, and a second metal mechanism element 180, wherein the first feeding radiation element 160, the second feeding radiation element 165, and the ground element 170 can all be made of metal materials, such as copper, silver, aluminum, iron, or alloys thereof. It should be understood that although not shown in FIG. Figure 1 However, the mobile device 100 may further include other components, such as: a processor, a touch control panel, a speaker, a power supply module, or (and) a housing.

[0063] The first metal mechanism component 110 includes a main portion 120 and a side wall portion 130, wherein the main portion 120 and the side wall portion 130 may be substantially perpendicular to each other. The side wall portion 130 of the first metal mechanism component 110 has a first slot 140. It should be noted that the first metal mechanism component 110 and the second metal mechanism component 180 are both appearance elements of the mobile device 100, that is, elements that can be directly observed by the user's eyes.

[0064] Figure 2 FIG. 1 is a partial view showing a mobile device 100 according to an embodiment of the present invention. Figure 3 is another partial view of the mobile device 100 according to an embodiment of the present invention. Figure 1 , 2 , 3. The first slot 140 of the first metal mechanism 110 may be a first closed slot, which may have a first closed end 141 and a second closed end 142 that are away from each other. In addition, the first slot 140 of the first metal mechanism 110 may be substantially in the shape of a straight bar. However, the present invention is not limited thereto. In other embodiments, the first slot 140 of the first metal mechanism 110 may also be substantially in a meandering shape, such as an L-shape, a W-shape, or an N-shape.

[0065] For example, the dielectric substrate 150 may be a FR4 (Flame Retardant 4) substrate, a printed circuit board (PCB), or a flexible printed circuit (FPC). The dielectric substrate 150 may have a first surface E1 and a second surface E2 opposite to each other, wherein the first surface E1 of the dielectric substrate 150 may be adjacent to the sidewall portion 130 of the first metal structure component 110, and the first feeding radiation portion 160 and the second feeding radiation portion 165 may be disposed on the second surface E2 of the dielectric substrate 150. It should be noted that the term "adjacent" or "adjacent" in this specification may refer to a distance between two corresponding elements being less than a predetermined distance (e.g., 10 mm or less), and may also include a situation where two corresponding elements are in direct contact with each other (i.e., the aforementioned distance is shortened to 0). In some embodiments, the first surface E1 of the dielectric substrate 150 and the sidewall portion 130 of the first metal structure component 110 are directly attached to each other, so that the dielectric substrate 150 can at least partially cover the first slot 140 of the first metal structure component 110 .

[0066] The first feeding radiation portion 160 may be substantially L-shaped. In detail, the first feeding radiation portion 160 has a first end 161 and a second end 162, wherein the first end 161 of the first feeding radiation portion 160 is coupled to a feeding point FP, and the second end 162 of the first feeding radiation portion 160 is an open end. The feeding point FP may also be coupled to a signal source 199. For example, the signal source 199 may be a radio frequency (RF) module. In some embodiments, the first feeding radiation portion 160 may extend across the first slot 140 of the first metal structure component 120. That is, the first feeding radiation portion 160 may have a first vertical projection on the sidewall portion 130 of the first metal structure component 110, wherein the first vertical projection may at least partially overlap with the first slot 140 of the first metal structure component 120.

[0067] The second feeding radiation portion 165 may be substantially in an inverted L-shape. Specifically, the second feeding radiation portion 165 has a first end 166 and a second end 167, wherein the first end 166 of the second feeding radiation portion 165 is coupled to the feeding point FP, and the second end 167 of the second feeding radiation portion 165 is an open end. For example, the second end 167 of the second feeding radiation portion 165 and the second end 162 of the first feeding radiation portion 160 may extend substantially in opposite directions and away from each other. In some embodiments, the second feeding radiation portion 165 may also extend across the first slot 140 of the first metal structure component 120. That is, the second feeding radiation portion 165 may have a second vertical projection on the sidewall portion 130 of the first metal structure component 110, wherein the second vertical projection may at least partially overlap with the first slot 140 of the first metal structure component 120. In addition, an angle θ may be formed between the first feeding radiation portion 160 and the second feeding radiation portion 165. For example, the aforementioned angle θ may be an acute angle, but is not limited thereto.

[0068] The grounding element 170 is coupled to the main portion 120 of the first metal structure 110. For example, the grounding element 170 can be implemented by a ground copper foil. In a preferred embodiment, the first slot 140, the dielectric substrate 150, the first feeding radiation portion 160, the second feeding radiation portion 165, and the grounding element 170 of the first metal structure 110 can together form an antenna structure of the mobile device 100.

[0069] Figure 4 is a three-dimensional diagram showing a mobile device 100 according to an embodiment of the present invention. Figure 1 , 4 The second metal mechanism component 180 may be disposed relative to the main portion 120 of the first metal mechanism component 110. In some embodiments, if the mobile device 100 is a laptop computer, the first metal mechanism component 110 may be a keyboard frame, and the second metal mechanism component 180 may be a base housing. It should be understood that the aforementioned keyboard frame and base housing may be equivalent to the so-called "C component" and "D component" in the field of laptop computers.

[0070] The second metal mechanism component 180 has a second slot 190. The second slot 190 of the second metal mechanism component 180 may be a second closed slot, which may have a first closed end 191 and a second closed end 192 that are far away from each other. In addition, the second slot 190 of the second metal mechanism component 180 may be roughly another straight bar shape, which may be roughly parallel to the first slot 140 of the first metal mechanism component 110. However, the present invention is not limited to this. In other embodiments, the second slot 190 of the second metal mechanism component 180 may also be roughly another winding shape, for example: another L shape, another W shape, or another N shape. It must be noted that the second slot 190 of the second metal mechanism component 180 may correspond to the first slot 140 of the first metal mechanism component 110. Therefore, the antenna structure of the mobile device 100 will be able to receive or transmit a wireless signal through the second slot 190 of the second metal mechanism component 180. Compared to the traditional antenna window, the mobile device 100 of the present invention can not only maintain the good communication quality of the antenna structure, but also greatly enhance the structural rigidity of the second metal structure component 180 .

[0071] In some embodiments, the antenna structure of the mobile device 100 may cover a first frequency band, a second frequency band, and a third frequency band. For example, the first frequency band may be between 2400MHz and 2500MHz, the second frequency band may be between 5150MHz and 5850MHz, and the third frequency band may be between 5925MHz and 7125MHz. Therefore, the mobile device 100 will at least support WLAN (Wireless Local Area Network), Wi-Fi 6E, and Wi-Fi 7 broadband operations.

[0072] In some embodiments, the operating principle of the antenna structure of the mobile device 100 can be as described below. The first slot 140 of the first metal structure component 110 can excite a fundamental resonance mode (Fundamental Resonant Mode) to form the aforementioned first frequency band. The first slot 140 of the first metal structure component 110 can also excite a first higher-order resonance mode (Higher-Order Resonant Mode) to form the aforementioned second frequency band. The first slot 140 of the first metal structure component 110 can also excite a second higher-order resonance mode to form the aforementioned third frequency band. According to actual measurement results, the first feed radiation portion 160 and the second feed radiation portion 165 can also be used to fine-tune the impedance matching (Impedance Matching) of the aforementioned third frequency band, thereby effectively increasing its operating bandwidth (Operational Bandwidth).

[0073] Figure 5 1 is a diagram showing the radiation gain of the antenna structure of the mobile device 100 according to an embodiment of the present invention, wherein the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the radiation gain (dBi). Figure 5 According to the measurement results, the radiation efficiency of the antenna structure of the mobile device 100 in the first frequency band and the second frequency band can reach at least -6dB, which can meet the actual application requirements of general mobile communication devices.

[0074] In some embodiments, the component sizes of the mobile device 100 may be as described below. The length L1 of the first slot 140 of the first metal mechanism component 110 may be approximately equal to 0.5 times the wavelength (λ / 2) of the first frequency band of the antenna structure of the mobile device 100. The width W1 of the first slot 140 of the first metal mechanism component 110 may be between 1 mm and 3 mm. The length L2 of the first feed radiation portion 160 may be approximately equal to 0.25 times the wavelength (λ / 4) of the third frequency band of the antenna structure of the mobile device 100. The width W2 of the first feed radiation portion 160 may be between 0.5 mm and 1 mm. The length L3 of the second feed radiation portion 165 may be approximately equal to 0.25 times the wavelength (λ / 4) of the third frequency band of the antenna structure of the mobile device 100. The width W3 of the second feed radiation portion 165 may be between 0.5 mm and 1 mm. The angle θ between the first feed radiating portion 160 and the second feed radiating portion 165 may be between 30 degrees and 90 degrees, for example, about 45 degrees, about 60 degrees, or about 75 degrees. The length L4 of the second slot 190 of the second metal structure 180 may be approximately equal to 0.5 times the wavelength (λ / 2) of the first frequency band of the antenna structure of the mobile device 100. The width W4 of the second slot 190 of the second metal structure 180 may be between 3 mm and 5 mm. The distance D1 between the second slot 190 of the second metal structure 180 and the side wall portion 130 of the first metal structure 110 may be between 4 mm and 6 mm. The above size range is obtained based on multiple experimental results, which helps to optimize the operating bandwidth and impedance matching of the antenna structure of the mobile device 100.

[0075] The following will introduce different configurations and detailed structural features of the mobile device 100. It should be understood that these drawings and descriptions are only for example and are not intended to limit the present invention.

[0076] Figure 6 FIG. 6 is a cross-sectional view showing a mobile device 600 according to an embodiment of the present invention. Figure 6 and 1 Figure is similar. Figure 6In the embodiment of the present invention, the mobile device 600 further includes a nonconductive support element 645. The nonconductive support element 645 can be made of plastic material and can be disposed between the side wall portion 130 of the first metal structure 110 and the dielectric substrate 150. The nonconductive support element 645 can be filled in the first slot 140 of the first metal structure 110. In addition, the nonconductive support element 645 can also be used to support the dielectric substrate 150. It should be noted that the addition of the nonconductive support element 645 helps to reduce the difficulty of manufacturing an antenna structure of the mobile device 600. In addition, a second metal structure 680 of the mobile device 600 can also have a cutting retraction design 685 and can be non-parallel to the main portion 120 of the first metal structure 110. For example, the aforementioned cutting retraction design 685 can be adjacent to a second slot 690 of the second metal structure 680 to beautify the overall device appearance of the mobile device 600. Figure 6 The remaining features of the mobile device 600 are the same as Figure 1 The mobile device 100 is similar to the mobile device 100 of the present invention, so the two embodiments can achieve similar operating effects.

[0077] Figure 7 FIG. 1 is a perspective view showing a notebook computer 700 according to an embodiment of the present invention. Figure 7 In the embodiment of the present invention, the aforementioned antenna structure can be applied to a laptop computer 700, wherein the laptop computer 700 includes an upper cover housing 710, a display frame 720, a keyboard frame 730, and a base housing 740. It must be understood that the upper cover housing 710, the display frame 720, the keyboard frame 730, and the base housing 740 are respectively equivalent to the so-called "A part", "B part", "C part", and "D part" in the field of laptop computers. For example, the aforementioned antenna structure can be set at a first position 761 or a second position 762 of the laptop computer 700. According to actual measurement results, if the aforementioned antenna structure is set at the first position 761 or the second position 762, the laptop computer 700 will easily meet the general specification of the specific absorption rate (SAR).

[0078] The present invention provides a novel mobile device and antenna structure thereof. Compared with the conventional design, the present invention has at least the advantages of small size, wide bandwidth, high structural rigidity, low manufacturing cost, and improved specific absorption rate, so it is very suitable for application in various communication devices.

[0079] It is worth noting that the above-mentioned component size, component shape, and frequency range are not limiting conditions of the present invention. Antenna designers can adjust these settings according to different needs. The mobile device of the present invention is not limited to Figure 1-7 The present invention may only include Figure 1-7 In other words, not all the features shown in the figures need to be implemented in the mobile device of the present invention at the same time.

[0080] In the present specification and claims, ordinal numbers, such as "first", "second", "third", etc., have no sequential relationship with each other and are only used to distinguish two different elements with the same name.

[0081] Although the present invention is disclosed as above in terms of preferred embodiments, it is not intended to limit the scope of the present invention. Any person skilled in the art may make some changes and modifications without departing from the concept and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A mobile device supporting broadband operation, comprising: A first metal structure component includes a main portion and a side wall portion, wherein the side wall portion has a first slot; a dielectric substrate adjacent to the sidewall portion of the first metal structure component; A first feeding radiation portion coupled to a feeding point and extending across the first slot of the first metal component; a second feeding radiation portion, coupled to the feeding point and extending across the first slot of the first metal component, wherein the first feeding radiation portion and the second feeding radiation portion are both disposed on the dielectric substrate; a grounding element coupled to the main portion of the first metal structure, wherein the first slot of the first metal structure, the dielectric substrate, the first feeding radiation portion, the second feeding radiation portion, and the grounding element together form an antenna structure; and A second metal mechanism component is disposed relative to the main portion of the first metal mechanism component, wherein the second metal mechanism component has a second slot.

2. The mobile device as claimed in claim 1, wherein the first slot of the first metal structure component is a first closed slot, the second slot of the second metal structure component is a second closed slot, and the first closed slot and the second closed slot are substantially parallel to each other. 3 . The mobile device as claimed in claim 1 , wherein an angle is formed between the first feeding radiation portion and the second feeding radiation portion, and the angle is between 30 degrees and 90 degrees.

4. The mobile device as claimed in claim 1, wherein the antenna structure covers a first frequency band, a second frequency band, and a third frequency band, the first frequency band is between 2400 MHz and 2500 MHz, the second frequency band is between 5150 MHz and 5850 MHz, and the third frequency band is between 5925 MHz and 7125 MHz. 5 . The mobile device as claimed in claim 4 , wherein a length of the first slot of the first metal structure component is substantially equal to 0.5 times the wavelength of the first frequency band. 6 . The mobile device as claimed in claim 4 , wherein a length of the second slot of the second metal structure component is substantially equal to 0.5 times the wavelength of the first frequency band. 7 . The mobile device as claimed in claim 4 , wherein a length of the first feeding radiation portion is substantially equal to 0.25 times the wavelength of the third frequency band. 8 . The mobile device as claimed in claim 4 , wherein a length of the second feeding radiation portion is substantially equal to 0.25 times the wavelength of the third frequency band.

9. The mobile device of claim 1, further comprising: A non-conductor support element is filled in the first slot of the first metal structure component, wherein the non-conductor support element is used to support the dielectric substrate. 10 . The mobile device as claimed in claim 1 , wherein the second metal structure component further has an inward-cut design and is not parallel to the main portion of the first metal structure component.

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