Wearable device
By designing a non-uniform width polygonal antenna structure in wearable devices and utilizing coupling gaps to enhance radiation efficiency, the problem of excessively narrow operating bandwidth was solved, enabling multi-band wireless communication support.
Patent Information
- Application Number
- CN202522390105.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-11
AI Technical Summary
Existing antenna designs have too narrow an operating bandwidth in mobile devices, resulting in a decrease in communication quality.
Design an antenna structure including a grounding component, a first radiating part, a second radiating part, a third radiating part, a connecting radiating part, and a circular radiating part. Through the design of unequal-width polygonal combination and coupling gap, a broadband antenna is formed to cover multiple frequency bands.
It achieves improved antenna radiation efficiency and operating bandwidth in a smaller size, supports wireless communication in multiple frequency bands, and is suitable for wearable devices such as smart glasses.
Smart Images
Figure CN224946963U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a wearable device, and more particularly to a wearable 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, such as mobile phones using 2G, 3G, and LTE (Long Term Evolution) systems and their respective frequency bands of 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz, and 2500MHz. Others cover short-range wireless communication, such as Wi-Fi and Bluetooth systems using the 2.4GHz, 5.2GHz, and 5.8GHz frequency bands.
[0003] Antennas are indispensable components in wireless communication. If the operating bandwidth of an antenna used for receiving or transmitting signals is too narrow, it can easily lead to a degradation in the communication quality of mobile devices. Therefore, designing a small-size, wide-bandwidth antenna structure is an important task for designers. Utility Model Content
[0004] In a preferred embodiment, the present invention provides a wearable device comprising: a grounding component coupled to a negative feed point; a first radiating portion coupled to a positive feed point, wherein the positive feed point corresponds to the negative feed point; a second radiating portion; a third radiating portion coupled to the first radiating portion via the second radiating portion; a connecting radiating portion coupled to the positive feed point; a circular radiating portion coupled to the connecting radiating portion; and a carrier component for carrying the first radiating portion, the second radiating portion, the third radiating portion, the connecting radiating portion, and the circular radiating portion; wherein the grounding component, the first radiating portion, the second radiating portion, the third radiating portion, the connecting radiating portion, and the circular radiating portion together form an antenna structure.
[0005] In some embodiments, the wearable device is a pair of smart glasses with wireless communication capabilities.
[0006] In some embodiments, the wearable device further includes: a frame assembly; an extension assembly connected to the frame assembly; and a speaker embedded in the extension assembly, wherein the carrier assembly is attached to the speaker.
[0007] In some embodiments, the frame component is a mirror frame, and the extension component is a temple.
[0008] In some embodiments, the combination of the first radiating portion, the second radiating portion, and the third radiating portion presents a polygonal shape with unequal widths.
[0009] In some embodiments, a first coupling gap is formed between the second radiating portion and the circular radiating portion, and a second coupling gap is formed between the third radiating portion and the circular radiating portion.
[0010] In some embodiments, the width of the second coupling gap is greater than the width of the first coupling gap.
[0011] In some embodiments, the antenna structure covers a first frequency band and a second frequency band, the first frequency band being between 1375MHz and 1775MHz, and the second frequency band being between 2400MHz and 2500MHz.
[0012] In some embodiments, the total length of the first radiating portion, the second radiating portion, and the third radiating portion is approximately equal to 0.25 times the wavelength of the first frequency band.
[0013] In some embodiments, the circumference of the circular radiating portion is approximately equal to 0.5 times the wavelength of the second frequency band. Attached Figure Description
[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:
[0015] Figure 1 This is a plan view showing a wearable device according to an embodiment of the present invention.
[0016] Figure 2 This is a perspective view showing a wearable device according to an embodiment of the present invention.
[0017] Figure 3 This is a perspective view showing a wearable device according to an embodiment of the present invention.
[0018] Figure 4 This is a return loss diagram showing the antenna structure of a wearable device according to an embodiment of the present invention.
[0019] Figure label:
[0020] 100, 300: Wearable devices
[0021] 110: Grounding component
[0022] 120: First Radiation Department
[0023] 121: The first end of the first radiating section
[0024] 122: The second end of the first radiating section
[0025] 130: Second Radiation Section
[0026] 133: First side
[0027] 134: Second side
[0028] 140: Third Radiation Section
[0029] 141: The first end of the third radiating section
[0030] 142: The second end of the third radiating section
[0031] 150: Connecting the radiating section
[0032] 151: The first end connected to the radiating section
[0033] 152: The second end connecting the radiating section
[0034] 160: Circular radiating part
[0035] 166: Edge Groove
[0036] 167: First small round hole
[0037] 168: Second small round hole
[0038] 170: Carrier Component
[0039] 180, 380: Antenna Structure
[0040] 185,385: Speakers
[0041] 190: Coaxial cable
[0042] 191: Central Conductor
[0043] 192: Conductive outer casing
[0044] 199: Signal Source
[0045] 310: Framework Components
[0046] 320: Extension Component
[0047] FB1: First Band
[0048] FB2: Second Band
[0049] FN: Negative Feed Point
[0050] FP: Positive Feed Point
[0051] GC1: First coupling gap
[0052] GC2: Second coupling gap
[0053] L1, L2, L3, L4: Length
[0054] L5: Perimeter
[0055] LT: Total Length
[0056] R5: Radius
[0057] W1, W2, W3, W4: Width Detailed Implementation
[0058] To make the objectives, features and advantages of this utility model more apparent and understandable, specific embodiments of this utility model are described below in conjunction with the accompanying drawings for detailed explanation.
[0059] Certain terms are used in this specification and the claims to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and the claims do not distinguish components by differences in name, but by differences in function. The terms "comprising" and "including" used throughout this specification and the 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.
[0060] The following disclosure provides many different embodiments or examples to implement the various features of this invention. The following disclosure describes specific examples of the various components and their arrangements for simplification. Of course, these specific examples are not intended to be limiting. For example, if this specification describes a first feature formed on or above a second feature, it indicates that it may include embodiments where the first and second features are in direct contact, or embodiments where an additional feature is formed between the first and second features, so that the first and second features may not be in direct contact. Furthermore, the same reference numerals and / or designations may be repeated in different examples of the following specification. These repetitions are for simplification and clarity and are not intended to limit any specific relationship between the different embodiments and / or structures discussed.
[0061] Furthermore, spatially related terms, such as "below," "below," "lower," "above," "higher," and similar terms, are used to facilitate the description of the relationship between one component or feature in the icon and another component or feature(s). In addition to the orientations shown in the accompanying drawings, these spatially related terms are intended to encompass different orientations of the device in use or operation. The device may be rotated to different orientations (90 degrees or other orientations), and the spatially related terms used herein can be interpreted in the same way.
[0062] Figure 1 This is a plan view showing a wearable device 100 according to an embodiment of the present invention. Figure 2 This is a perspective view showing a wearable device 100 according to an embodiment of the present invention. Please refer to Figures 1 and 2 together for a better understanding of the present invention. For example, the wearable device 100 can be applied to the fields of virtual reality (VR) or augmented reality (AR), but is not limited thereto.
[0063] In the embodiments shown in Figures 1 and 2, the wearable device 100 includes at least: a ground element 110, a first radiation element 120, a second radiation element 130, a third radiation element 140, a connection radiation element 150, a circular radiation element 160, and a carrier element 170. The ground element 110, the first radiation element 120, the second radiation element 130, the third radiation element 140, the connection radiation element 150, and the circular radiation element 160 can all be made of metal materials, such as copper, silver, aluminum, iron, or their alloys.
[0064] The grounding component 110 is coupled to a negative feeding point FN. The grounding component 110 can be considered as a system ground plane of the wearable device 100, and its shape and size are not particularly limited in this invention. In some embodiments, the grounding component 110 is implemented by means of a ground copper foil.
[0065] The first radiating portion 120 may generally be a short, straight strip. Specifically, the first radiating portion 120 has a first end 121 and a second end 122, wherein the first end 121 of the first radiating portion 120 is coupled to a positive feeding point FP. The positive feeding point FP corresponds to a negative feeding point FN. In some embodiments, the wearable device 100 further includes a coaxial cable 190. The coaxial cable 190 includes a central conductor 191 and a conductive housing 192, wherein the positive feeding point FP can be coupled via the central conductor 191 to a positive electrode of a signal source 199, and the negative feeding point FN can be coupled via the conductive housing 192 to a negative electrode of the signal source 199. For example, the signal source 199 may be a radio frequency (RF) module. However, this invention is not limited to this. In some other embodiments, the aforementioned positive feed point FP and negative feed point FN can also be interchanged without affecting the operational efficiency of the wearable device 100.
[0066] The second radiating portion 130 may generally be a large rectangle or a large square. Specifically, the second radiating portion 130 has a first side 133 and a second side 134, wherein the first side 133 and the second side 134 are opposite to each other. The first side 133 of the second radiating portion 130 is coupled to the second end 122 of the first radiating portion 120.
[0067] The third radiating portion 140 can generally be shaped as a relatively long straight strip. Specifically, the third radiating portion 140 has a first end 141 and a second end 142, wherein the first end 141 of the third radiating portion 140 is coupled to the second side 134 of the second radiating portion 130, and the second end 142 of the third radiating portion 140 is an open end. That is, the third radiating portion 140 can be coupled to the first radiating portion 120 via the second radiating portion 130. In some embodiments, the combination of the first radiating portion 120, the second radiating portion 130, and the third radiating portion 140 can generally form a unequal-width polygonal shape, wherein the second radiating portion 130 has a maximum width W2, and the width W3 of the third radiating portion 140 can be approximately equal to the width W1 of the first radiating portion 120. For example, the aforementioned unequal-width polygonal shape can generally form an N-shape or an inverted Z-shape, but is not limited to these.
[0068] The connecting radiating portion 150 may generally be a small rectangle or a small square. Specifically, the connecting radiating portion 150 has a first end 151 and a second end 152, wherein the first end 151 of the connecting radiating portion 150 is coupled to the positive feed point FP. In some embodiments, the connecting radiating portion 150 may further be coupled to the first end 121 of the first radiating portion 120.
[0069] The circular radiating portion 160 is coupled to the second end 152 of the connecting radiating portion 150. For example, the grounding component 110 and the circular radiating portion 160 may be located on two different parallel planes. In some embodiments, the circular radiating portion 160 is adjacent to the second radiating portion 130 and the third radiating portion 140, wherein a first coupling gap GC1 may be formed between the second radiating portion 130 and the circular radiating portion 160, and a second coupling gap GC2 may be formed between the third radiating portion 140 and the circular radiating portion 160. For example, the width of the second coupling gap GC2 may be greater than the width of the first coupling gap GC1. It should be noted that the terms "adjacent" or "adjacent" in this specification may refer to a distance between the corresponding two components being less than a predetermined distance (e.g., 10 mm or less), but generally do not include the case where the corresponding two components are in direct contact with each other (i.e., the aforementioned distance is shortened to 0). In some embodiments, the circular radiating portion 160 also has an edge groove 166, and a first small circular hole 167 and a second small circular hole 168 separated from each other. However, the present invention is not limited to this. In other embodiments, the edge groove 166, the first small circular hole 167, and the second small circular hole 168 can all be omitted, so that the circular radiating portion 160 can also be replaced with a complete solid circular metal sheet without any grooves.
[0070] The carrier assembly 170 can be used to carry the first radiating part 120, the second radiating part 130, the third radiating part 140, the connecting radiating part 150, and the circular radiating part 160. The shape and type of the carrier assembly 170 are not particularly limited in this invention. For example, the carrier assembly 170 can be a flexible printed circuit (FPC), which can be distributed on various curved surfaces.
[0071] In a preferred embodiment, the grounding component 110, the first radiating portion 120, the second radiating portion 130, the third radiating portion 140, the connecting radiating portion 150, and the circular radiating portion 160 can collectively form an antenna structure 180 of the wearable device 100. In some embodiments, the wearable device 100 may further include a speaker 185, and the aforementioned carrier component (not shown) can be attached to the speaker 185, allowing the speaker 185 to be well integrated with the aforementioned antenna structure 180. Furthermore, the first small circular hole 167 and the second small circular hole 168 of the circular radiating portion 160 can serve as multiple sound holes for the speaker 185, and the total number of these small circular holes can be adjusted according to different needs. Therefore, the wearable device 100 can support the required wireless communication functions without increasing the overall device size.
[0072] Figure 3 This is a perspective view showing a wearable device 300 according to an embodiment of the present invention. Figure 3 Similar to Figures 1 and 2. In Figure 3 In this embodiment, the wearable device 300 is a smart pair of glasses with wireless communication capabilities. The wearable device 300 further includes a frame element 310 and an extension element 320, wherein the extension element 320 is connected to the frame element 310. For example, the frame element 310 may be a glasses frame, and the extension element 320 may be a temple. Both the frame element 310 and the extension element 320 can be made of non-conductive materials. Additionally, a speaker 385 of the wearable device 300 can be embedded in the extension element 320, allowing an antenna structure 380 of the wearable device 300 to be integrated with the speaker 385. Figure 3 The remaining features of the wearable device 300 are similar to those of the wearable device 100 in Figures 1 and 2, so these embodiments can achieve similar operational effects.
[0073] Figure 4This is a graph showing the return loss of the antenna structure 180 of the wearable 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 4 Based on the measurement results, the antenna structure 180 of the wearable device 100 can cover a first frequency band FB1 and a second frequency band FB2. For example, the first frequency band FB1 can be between 1375MHz and 1775MHz, while the second frequency band FB2 can be between 2400MHz and 2500MHz. Therefore, the wearable device 100 will at least support broadband operation of GPS (Global Positioning System) and WLAN (Wireless Local Area Network) 2.4GHz.
[0074] In some embodiments, the operating principle of the antenna structure 180 of the wearable device 100 is as follows. The first radiator 120, the second radiator 130, and the third radiator 140 can generate the aforementioned first frequency band FB1. Based on actual measurements, the unequal width design of the first radiator 120, the second radiator 130, and the third radiator 140 can provide additional inductive characteristics to fine-tune the impedance matching of the aforementioned first frequency band FB1. Additionally, connecting the radiator 150 and the circular radiator 160 can generate the aforementioned second frequency band FB2. The first coupling gap GC1 can be used to increase a first coupling amount in the aforementioned first frequency band FB1, while the second coupling gap GC2 can be used to increase a second coupling amount in the aforementioned second frequency band FB2. Because of the first coupling gap GC1 and the second coupling gap GC2, the radiation efficiency of the antenna structure 180 of the wearable device 100 in both the aforementioned first frequency band FB1 and the second frequency band FB2 can be significantly improved.
[0075] In some embodiments, the component dimensions of the wearable device 100 may be as described below. The total length LT of the first radiating portion 120, the second radiating portion 130, and the third radiating portion 140 may be approximately equal to 0.25 times the wavelength (λ / 4) of the center frequency (e.g., approximately 1575 MHz) of the first frequency band FB1 of the antenna structure 180 of the wearable device 100. The length L3 of the third radiating portion 140 may be at least three times the length L1 of the first radiating portion 120. Additionally, the length L3 of the third radiating portion 140 may also be at least twice the length L2 of the second radiating portion 130. The length L1 of the first radiating portion 120 may be between 3 mm and 5 mm, and the width W1 of the first radiating portion 120 may be between 2 mm and 4 mm. The length L2 of the second radiating portion 130 may be between 5 mm and 7 mm, and the width W2 of the second radiating portion 130 may be between 5 mm and 7 mm. The length L3 of the third radiating section 140 can be between 15 mm and 17 mm, and the width W3 of the third radiating section 140 can be between 2 mm and 4 mm. The length L4 of the connecting radiating section 150 can be between 4 mm and 6 mm, and the width W4 of the connecting radiating section 150 can be between 4 mm and 6 mm. The circumference L5 of the circular radiating section 160 can be approximately equal to 0.5 times the wavelength (λ / 2) of the center frequency (e.g., about 2450 MHz) of the second frequency band FB2 of the antenna structure 180 of the wearable device 100. The radius R5 of the circular radiating section 160 can be between 0.07 times and 0.09 times the wavelength (7λ / 100~9λ / 100) of the center frequency of the second frequency band FB2 of the antenna structure 180 of the wearable device 100. The width of the second coupling gap GC2 can be at least 1.5 times the width of the first coupling gap GC1. The width of the first coupling gap GC1 can be between 2 mm and 4 mm. The width of the second coupling gap GC2 can be between 6 mm and 9 mm. The aforementioned range of component dimensions is derived from multiple experimental results, which helps to optimize the operating bandwidth and impedance matching of the antenna structure 180, while also minimizing the overall device size of the wearable device 100.
[0076] This invention proposes a novel wearable device. Compared with traditional designs, this invention has advantages such as miniaturization, wider bandwidth, and support for wireless communication, making it well-suited for various mobile communication devices or the Internet of Things.
[0077] It is worth noting that the component size, component shape, and frequency range described above are not limiting conditions of this utility model. Antenna designers can adjust these multiple settings according to different needs. The wearable device of this utility model is not limited to the state illustrated in Figures 1-4. This utility model may include only any one or more features of any one or more embodiments in Figures 1-4. In other words, not all features shown in the figures need to be implemented simultaneously in the wearable device of this utility model.
[0078] The ordinal numbers in this specification and the claims, such as "first", "second", "third", etc., are not sequential in any particular order; they are only used to distinguish between two different components with the same name.
[0079] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.
Claims
1. A wearable device, characterized in that, include: A grounding component is coupled to a negative feed point; A first radiating section is coupled to a positive feed point, wherein the positive feed point corresponds to the negative feed point; Second radiating section; A third radiating section is coupled to the first radiating section via the second radiating section; A connecting radiating section is coupled to the positive feed point; A circular radiating part is coupled to the connecting radiating part; as well as A carrier assembly for carrying the first radiating part, the second radiating part, the third radiating part, the connecting radiating part, and the circular radiating part; The grounding component, the first radiating part, the second radiating part, the third radiating part, the connecting radiating part, and the circular radiating part together form an antenna structure.
2. The wearable device as described in claim 1, characterized in that, This wearable device is a smart pair of glasses with wireless communication capabilities.
3. The wearable device as described in claim 1, characterized in that, Including: A framework component; An extension component is connected to the framework component; and A loudspeaker is embedded in the extension assembly, wherein the carrier assembly is attached to the loudspeaker.
4. The wearable device as described in claim 3, characterized in that, The frame component is a mirror frame, and the extension component is a mirror temple.
5. The wearable device as claimed in claim 1, characterized in that, The combination of the first radiating part, the second radiating part, and the third radiating part presents a polygonal shape with unequal width.
6. The wearable device as claimed in claim 1, characterized in that, A first coupling gap is formed between the second radiating part and the circular radiating part, and a second coupling gap is formed between the third radiating part and the circular radiating part.
7. The wearable device as claimed in claim 6, characterized in that, The width of the second coupling gap is greater than the width of the first coupling gap.
8. The wearable device as claimed in claim 1, characterized in that, The antenna structure covers a first frequency band and a second frequency band, the first frequency band being between 1375MHz and 1775MHz, and the second frequency band being between 2400MHz and 2500MHz.
9. The wearable device as claimed in claim 8, characterized in that, The total length of the first radiating part, the second radiating part, and the third radiating part is approximately equal to 0.25 times the wavelength of the first frequency band.
10. The wearable device as claimed in claim 8, characterized in that, The circumference of the circular radiating part is approximately equal to 0.5 times the wavelength of the second frequency band.