Mobile device

Abstract

This invention provides a mobile device. The mobile device includes a metal component, a first radiating portion, a second radiating portion, a third radiating portion, a fourth radiating portion, a fifth radiating portion, and a dielectric substrate. The metal component has a separate first closed slot and a second closed slot. The first radiating portion is coupled to a signal source and extends across the first closed slot. The second radiating portion is in a floating state. The third radiating portion is coupled to a ground potential. The fourth radiating portion is coupled to a ground potential and is located between the first and second closed slots. The fifth radiating portion is coupled to a ground potential. The first, second, third, fourth, and fifth radiating portions, along with the first and second closed slots of the metal component, together form an antenna structure.

Description

Technical Field

[0001] This invention relates to a mobile device, and more particularly to a mobile device and its antenna structure. Background Technology

[0002] With the advancement of mobile communication technology, mobile devices have become increasingly common in recent years, such as laptops, mobile phones, multimedia players, and other portable electronic devices with multiple functions. To meet people's needs, mobile devices typically have wireless communication capabilities. Some cover long-range wireless communication ranges; for example, mobile phones use 2G, 3G, and LTE (Long Term Evolution) systems and the frequency bands they use: 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz, and 2500MHz. Others cover short-range wireless communication ranges; for example, Wi-Fi and Bluetooth systems use the frequency bands of 2.4GHz, 5.2GHz, and 5.8GHz.

[0003] In pursuit of aesthetic appeal, designers often incorporate metal components into mobile devices. However, these added metal components can negatively impact the antennas supporting wireless communication, thereby degrading the overall communication quality of the mobile device. Therefore, it is necessary to propose a completely new mobile device and antenna structure to overcome the problems faced by traditional technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a mobile device to solve at least one of the above-mentioned problems.

[0005] In a preferred embodiment, the present invention provides a mobile device comprising a metal component, a first radiating portion, a second radiating portion, a third radiating portion, a fourth radiating portion, a fifth radiating portion, and a dielectric substrate. A metal component has a first closed slot and a second closed slot separated from each other; a first radiating portion is coupled to a signal source, wherein the first radiating portion extends across the first closed slot; a second radiating portion is in a floating state and extends across the first closed slot; a third radiating portion is coupled to a ground potential, wherein the third radiating portion is adjacent to the first closed slot; a fourth radiating portion is coupled to the ground potential, wherein the fourth radiating portion is located between the first closed slot and the second closed slot; a fifth radiating portion is coupled to the ground potential, wherein the fifth radiating portion is adjacent to the second closed slot; a dielectric substrate is adjacent to the metal component, wherein the first radiating portion, the second radiating portion, the third radiating portion, the fourth radiating portion, and the fifth radiating portion are all disposed on the dielectric substrate; wherein the first radiating portion, the second radiating portion, the third radiating portion, the fourth radiating portion, the fifth radiating portion, and the first closed slot and the second closed slot of the metal component together form an antenna structure.

[0006] In some embodiments, the first closed slot is a longer straight strip, while the second closed slot is a shorter straight strip.

[0007] In some embodiments, the first radiating portion is in the shape of an inverted L, and the fourth radiating portion is in the shape of an L.

[0008] In some embodiments, the fourth radiating portion has a vertical projection on the metal component, and the vertical projection does not overlap with either the first closed slot or the second closed slot.

[0009] In some embodiments, the third radiating portion does not extend across the first closed slot at all, while the fifth radiating portion extends at least partially across the second closed slot.

[0010] In some embodiments, the distance between the first closed slot and the second closed slot is less than or equal to 2.5 mm.

[0011] In some embodiments, a coupling gap is formed between the fourth radiating portion and the first radiating portion, and the width of the coupling gap is less than or equal to 1 mm.

[0012] In some embodiments, the antenna structure covers a first frequency band, a second frequency band, and a third frequency band, wherein the first frequency band is between 2400MHz and 2500MHz, the second frequency band is between 5150MHz and 5850MHz, and the third frequency band is between 5925MHz and 7125MHz.

[0013] In some embodiments, the length of the first closed slot is equal to 0.5 times the wavelength of the first frequency band.

[0014] In some embodiments, the length of the second closed slot is equal to 0.5 times the wavelength of the third frequency band.

[0015] The beneficial effects of this invention are that it provides a mobile device that can be integrated with a metal component. Since the metal component can be considered an extension of the antenna structure, it will not negatively affect the radiation performance of the antenna structure. Compared to conventional designs, this invention offers advantages such as smaller size, wider bandwidth, lower manufacturing cost, and improved device appearance, making it well-suited for various types of mobile communication devices. Attached Figure Description

[0016] Figure 1 This is a perspective view of a mobile device according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the lower part of a mobile device according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the upper part of a mobile device according to an embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional view of a mobile device according to an embodiment of the present invention.

[0020] Figure 5 This is a return loss diagram of the antenna structure of a mobile device according to an embodiment of the present invention.

[0021] Figure 6 This is a radiation gain diagram of the antenna structure of a mobile device according to an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of a laptop computer according to an embodiment of the present invention.

[0023] The attached figures are labeled as follows:

[0024] 100: Mobile devices

[0025] 110: Metal structural components

[0026] 111: Edge of metal structural components

[0027] 120: First closed slot

[0028] 121: First closed end

[0029] 122: Second closed end

[0030] 130: Second closed slot

[0031] 131: Third closed end

[0032] 132: Fourth closed end

[0033] 140: First Radiation Section

[0034] 141: The first end of the first radiating section

[0035] 142: The second end of the first radiating section

[0036] 150: Second Radiation Section

[0037] 160: Third Radiation Section

[0038] 161: The first end of the third radiating section

[0039] 162: The second end of the third radiating section

[0040] 170: Fourth Radiation Section

[0041] 171: The first end of the fourth radiating section

[0042] 172: The second end of the fourth radiating section

[0043] 180: Fifth Radiation Department

[0044] 181: The first end of the fifth radiating section

[0045] 182: The second end of the fifth radiating section

[0046] 190: Dielectric substrate

[0047] 199: Signal Source

[0048] 700: Laptop

[0049] 710: Top cover shell

[0050] 720: Monitor Bezel

[0051] 730: Keyboard Bezel

[0052] 740: Base shell

[0053] 751: First position

[0054] 752: Second position

[0055] D1: Spacing

[0056] E1: First surface

[0057] E2: Second Surface

[0058] FB1: First Band

[0059] FB2: Second Band

[0060] FB3: Third Band

[0061] GC1: Coupling gap

[0062] L1, L2, L3, L4, L5, LS1, LS2: Length

[0063] LC1: Section line

[0064] VSS: Grounding Potential

[0065] W1, W2, W3, W4, W5, WS1, WS2: Width Detailed Implementation

[0066] To make the objectives, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0067] Certain terms are used in the specification and claims to refer to specific elements. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same element. This specification and claims do not distinguish elements by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout the specification and claims are open-ended and should be interpreted as "including but not limited to". The term "generally" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and achieve the basic technical effect within a certain margin of error. Furthermore, the term "coupled" in this specification includes any direct and indirect electrical connection means. Therefore, if a first device is described as 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.

[0068] Figure 1 This is a perspective view of a mobile device 100 according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the lower portion of a mobile device 100 according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the upper part of a mobile device 100 according to an embodiment of the present invention. Figure 4 A cross-sectional view (along a) of a mobile device 100 according to an embodiment of the present invention. Figure 1 (A section line LC1). Please refer to it as well. Figure 1 , Figure 2 , Figure 3 and Figure 4The mobile device 100 can be a smartphone, a tablet, or a laptop. Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment, the mobile device 100 includes: a metal mechanism element 110, a first radiation element 140, a second radiation element 150, a third radiation element 160, a fourth radiation element 170, a fifth radiation element 180, and a dielectric substrate 190. It must be understood that, although not shown in... Figure 1 , Figure 2 , Figure 3 and Figure 4 However, the mobile device 100 may also include other components, such as a processor, a touch panel, a speaker, a battery module, and a housing.

[0069] The metal component 110 may be an exterior element of the mobile device 100. It should be noted that the term "exterior element" in this specification refers to the portion of the mobile device 100 that is directly visible to the user's eye. In some embodiments, the metal component 110 may be a metal top cover of a laptop computer or a metal back cover of a tablet computer, but it is not limited thereto. For example, if the mobile device 100 is a laptop computer, the metal component 110 may be what is commonly referred to in the laptop computer industry as an "A-piece". The metal component 110 has a first closed slot 120 and a second closed slot 130 that are separated from each other. For example, the first closed slot 120 may be generally a longer straight strip, while the second closed slot 130 may be generally a shorter straight strip. The first closed slot 120 and the second closed slot 130 may both be aligned on the same straight line and may be generally parallel to an edge 111 of the metal component 110. In detail, the first closed slot 120 has a first closed end 121 and a second closed end 122 that are far apart from each other, while the second closed slot 130 has a third closed end 131 and a fourth closed end 132 that are far apart from each other, wherein the third closed end 131 of the second closed slot 130 may be adjacent to the second closed end 122 of the first closed slot 120. The moving device 100 may also include a non-conductive material that can be filled in both the first closed slot 120 and the second closed slot 130 to achieve a waterproof or dustproof function.

[0070] The first radiating portion 140, the second radiating portion 150, the third radiating portion 160, the fourth radiating portion 170, and the fifth radiating portion 180 can all be made of metal, such as copper, silver, aluminum, iron, or their alloys. The dielectric substrate 190 can be an FR4 (Flame Retardant 4) substrate, a printed circuit board (PCB), or a flexible circuit board (FCB). The dielectric substrate 190 can have a first surface E1 and a second surface E2 opposite to each other, wherein the first radiating portion 140, the second radiating portion 150, the third radiating portion 160, the fourth radiating portion 170, and the fifth radiating portion 180 can all be disposed on the first surface E1 of the dielectric substrate 190, and the second surface E2 of the dielectric substrate 190 can be adjacent to the metal component 110. It should be noted that the terms "adjacent" or "adjacent" in this specification may refer to a distance between two corresponding components that is less than a predetermined distance (e.g., 5 mm or less), or may include a situation where the two corresponding components are in direct contact with each other (that is, the aforementioned distance is shortened to 0). In some embodiments, the second surface E2 of the dielectric substrate 190 is directly bonded to the metal component 110, such that the dielectric substrate 190 can completely cover the first closed slot 120 and the second closed slot 130.

[0071] A ground potential VSS of the mobile device 100 may be provided by a grounding element (not shown), which may be coupled to the metal component 110. For example, the grounding element may be a ground copper foil that extends from the dielectric substrate 190 to the metal component 110.

[0072] The first radiating portion 140 may generally be in the shape of an inverted L, extending across the first closed slot 120. Specifically, the first radiating portion 140 has a first end 141 and a second end 142, wherein the first end 141 is coupled to a signal source 199, and the second end 142 is an open end. For example, the signal source 199 may be a radio frequency (RF) module. In some embodiments, the first radiating portion 140 has a vertical projection on the metal component 110, wherein the vertical projection of the first radiating portion 140 at least partially overlaps with the first closed slot 120.

[0073] The second radiating portion 150 may be generally rectangular. The second radiating portion 150 is in a floating state and extends across the first closed slot 120. That is, the second radiating portion 150 does not contact the metal component 110 or any other radiating portion. In some embodiments, the second radiating portion 150 has a vertical projection onto the metal component 110, wherein the vertical projection of the second radiating portion 150 at least partially overlaps with the first closed slot 120.

[0074] The third radiating portion 160 may be generally straight and may be disposed between the first radiating portion 140 and the second radiating portion 150. Specifically, 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 ground potential VSS, and the second end 162 of the third radiating portion 160 is an open-circuit end and is adjacent to the first closed slot 120. The third radiating portion 160 does not extend across the first closed slot 120 at all. In some embodiments, the third radiating portion 160 has a vertical projection on the metal component 110, wherein the vertical projection of the third radiating portion 160 does not overlap with the first closed slot 120 at all.

[0075] The fourth radiating portion 170 may be generally L-shaped and may be disposed between the first closed slot 120 and the second closed slot 130 (or between the first radiating portion 140 and the fifth radiating portion 180). Specifically, 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 ground potential VSS, and the second end 172 of the fourth radiating portion 170 is an open-circuit end. The second end 172 of the fourth radiating portion 170 and the second end 142 of the first radiating portion 140 may extend in generally opposite and mutually distant directions. Furthermore, the fourth radiating portion 170 is adjacent to the first radiating portion 140, such that a coupling gap GC1 is formed between the fourth radiating portion 170 and the first radiating portion 140. In some embodiments, the fourth radiating portion 170 has a vertical projection on the metal component 110, wherein the vertical projection of the fourth radiating portion 170 does not overlap with either the first closed slot 120 or the second closed slot 130.

[0076] The fifth radiating portion 180 may be generally straight and may be at least partially parallel to the fourth radiating portion 170. Specifically, the fifth radiating portion 180 has a first end 181 and a second end 182, wherein the first end 181 is coupled to ground potential VSS, and the second end 182 is an open-circuit end adjacent to the second closed slot 130. The fifth radiating portion 180 extends at least partially across the second closed slot 130. In some embodiments, the fifth radiating portion 180 has a vertical projection onto the metal component 110, wherein the vertical projection of the fifth radiating portion 180 at least partially overlaps with the second closed slot 130. Alternatively, the vertical projection of the second end 182 of the fifth radiating portion 180 may be located precisely inside the second closed slot 130.

[0077] In a preferred embodiment, the first radiating part 140, the second radiating part 150, the third radiating part 160, the fourth radiating part 170, the fifth radiating part 180, and the first closed slot 120 and the second closed slot 130 of the metal component 110 together form an antenna structure of the mobile device 100.

[0078] Figure 5 This is a return loss graph for the antenna structure of a mobile device 100 according to an embodiment of the present invention, where the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the return loss (dB). Figure 5 Based on the measurement results, when excited by signal source 199, the antenna structure of mobile device 100 can cover a first frequency band FB1, a second frequency band FB2, and a third frequency band FB3. For example, the first frequency band FB1 can be between 2400MHz and 2500MHz, the second frequency band FB2 can be between 5150MHz and 5850MHz, and the third frequency band FB3 can be between 5925MHz and 7125MHz. Therefore, the antenna structure of mobile device 100 will at least support broadband operation of traditional WLAN (Wireless Wide Area Network) 2.4GHz / 5GHz and next-generation Wi-Fi 6.

[0079] In terms of antenna principle, the first radiating section 140 and the first closed slot 120 of the metal component 110 can jointly excite a fundamental resonant mode to form the aforementioned first frequency band FB1. Furthermore, the first radiating section 140 and the first closed slot 120 of the metal component 110 can also jointly excite a higher-order resonant mode (dominant frequency effect) to form the aforementioned second frequency band FB2. On the other hand, the fourth radiating section 170 and the second closed slot 130 of the metal component 110 can be coupled and excited by the first radiating section 140 to form the aforementioned third frequency band FB3. According to actual measurement results, the addition of the second radiating section 150, the third radiating section 160, and the fifth radiating section 180 helps to fine-tune the impedance matching of the aforementioned first frequency band FB1, second frequency band FB2, and third frequency band FB3.

[0080] Figure 6 This is a radiation gain graph of the antenna structure of a mobile device 100 according to an embodiment of the present invention, where the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the radiation gain (dB). Figure 6 The measurement results show that the radiation gain of the antenna structure of the mobile device 100 in the aforementioned first frequency band FB1, second frequency band FB2 and third frequency band FB3 can reach -6dB or higher, which can meet the actual application requirements of traditional WLAN and next-generation Wi-Fi 6 communication.

[0081] In some embodiments, the component dimensions of the mobile device 100 may be as described below. The length LS1 of the first closed slot 120 may be approximately equal to 0.5 times the wavelength (λ / 2) of the first frequency band FB1 of the antenna structure of the mobile device 100. The width WS1 of the first closed slot 120 may be between 2 mm and 2.5 mm. The length LS2 of the second closed slot 130 may be approximately equal to 0.5 times the wavelength (λ / 2) of the third frequency band FB3 of the antenna structure of the mobile device 100. The width WS2 of the second closed slot 130 may be between 2 mm and 2.5 mm. The spacing D1 between the first closed slot 120 and the second closed slot 130 may be less than or equal to 2.5 mm. The length L1 of the first radiating portion 140 may be greater than or equal to 10 mm, and the width W1 of the first radiating portion 140 may be between 0.5 mm and 2 mm. The length L2 of the second radiating portion 150 may be between 4 mm and 6 mm, and the width W2 of the second radiating portion 150 may be between 2 mm and 3 mm. The length L3 of the third radiating section 160 can be between 1 mm and 3 mm, and the width W3 of the third radiating section 160 can be between 1 mm and 3 mm. The length L4 of the fourth radiating section 170 can be greater than or equal to 6 mm, and the width W4 of the fourth radiating section 170 can be between 0.5 mm and 2 mm. The length L5 of the fifth radiating section 180 can be greater than or equal to 5 mm, and the width W5 of the fifth radiating section 180 can be between 0.5 mm and 2 mm. The width of the coupling gap GC1 between the first radiating section 140 and the fourth radiating section 170 can be less than or equal to 1 mm. The above component size ranges are derived from multiple experimental results and help to optimize the operating bandwidth and impedance matching of the antenna structure of the mobile device 100.

[0082] Figure 7 This is a schematic diagram of a laptop computer 700 according to an embodiment of the present invention. Figure 7In the embodiments described above, the aforementioned antenna structure can be applied to a laptop computer 700, which 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, display frame 720, keyboard frame 730, and base housing 740 are respectively equivalent to what are commonly referred to as "Component A," "Component B," "Component C," and "Component D" in the laptop computer industry. The aforementioned antenna structure can be disposed at a first position 751 or / and a second position 752 of the laptop computer 700. In other words, the antenna structure of the present invention can be integrated with the upper cover housing 710 of the laptop computer 700, which not only enhances the appearance of the device but also maintains good communication quality.

[0083] This invention proposes a novel mobile device and antenna structure that can be integrated with a metal component. Since the metal component can be considered an extension of the antenna structure, it will not negatively impact the antenna's radiation performance. Compared to conventional designs, this invention offers advantages such as smaller size, wider bandwidth, lower manufacturing cost, and improved device appearance, making it well-suited for various mobile communication devices.

[0084] It is worth noting that the component dimensions, shapes, and frequency ranges described above are not limiting factors of this invention. Antenna designers can adjust these settings according to different needs. The mobile device and antenna structure of this invention are not limited to... Figures 1-7 The state illustrated. This invention may include only... Figures 1-7 Any one or more features of any one or more embodiments. In other words, not all the features illustrated need to be implemented simultaneously in the mobile device and antenna structure of the present invention.

[0085] The ordinal numbers in this specification and claims, such as "first", "second", "third", etc., are not sequential in any way; they are only used to distinguish two different elements with the same name.

[0086] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the scope of the invention. Those skilled in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A mobile device, comprising: A metal structural component having a first closed slot and a second closed slot that are separated from each other; A first radiating portion is coupled to a signal source, wherein the first radiating portion extends across the first closed slot. A second radiating part, wherein the second radiating part is in a floating state and extends across the first closed slot; A third radiating part is coupled to a ground potential, wherein the third radiating part is adjacent to the first closed slot; A fourth radiating part is coupled to the ground potential, wherein the fourth radiating part is located between the first closed slot and the second closed slot; A fifth radiating portion, coupled to the ground potential, wherein the fifth radiating portion is adjacent to the second closed slot; and A dielectric substrate is adjacent to the metal component, wherein the first radiating portion, the second radiating portion, the third radiating portion, the fourth radiating portion and the fifth radiating portion are all disposed on the dielectric substrate; The first radiating part, the second radiating part, the third radiating part, the fourth radiating part, the fifth radiating part, and the first closed slot and the second closed slot of the metal component together form an antenna structure; The fourth radiating part has a vertical projection on the metal component, and the vertical projection does not overlap with either the first closed slot or the second closed slot. The first radiating part and the first closed slot of the metal component together generate the first frequency band; The first radiating part and the first closed slot of the metal component can also jointly generate a second frequency band; The fourth radiating part and the second closed slot of the metal component are coupled and excited by the first radiating part to form a third frequency band.

2. The mobile device as claimed in claim 1, wherein the first closed slot is a longer straight strip and the second closed slot is a shorter straight strip.

3. The mobile device as claimed in claim 1, wherein the first radiating portion is in the shape of an inverted L, and the fourth radiating portion is in the shape of an L.

4. The mobile device of claim 1, wherein the third radiating portion does not extend across the first closed slot at all, while the fifth radiating portion extends at least partially across the second closed slot.

5. The mobile device as claimed in claim 1, wherein the distance between the first closed slot and the second closed slot is less than or equal to 2.5 mm.

6. The mobile device as claimed in claim 1, wherein a coupling gap is formed between the fourth radiating part and the first radiating part, and the width of the coupling gap is less than or equal to 1 mm.

7. The mobile device of claim 1, wherein the first frequency band is between 2400MHz and 2500MHz, the second frequency band is between 5150MHz and 5850MHz, and the third frequency band is between 5925MHz and 7125MHz.

8. The mobile device of claim 7, wherein the length of the first closed slot is equal to 0.5 times the wavelength of the first frequency band.

9. The mobile device of claim 7, wherein the length of the second closed slot is equal to 0.5 times the wavelength of the third frequency band.

Images