CN220895854U - Wearable device - Google Patents

Abstract

A wearable device, comprising: a feed-in radiation part, a connecting radiation part, a branching radiation part, a short-circuit radiation part, an extension radiation part and a carrier element. The feed-in radiation part is provided with a feed-in point. The connection radiation portion is coupled to the feed radiation portion. The branch radiation portion is coupled to the connection radiation portion. The connecting radiation part can be further coupled to a grounding point through the short-circuit radiation part. The extension radiation portion is coupled to the feed radiation portion. The feed-in radiation part, the connecting radiation part, the bifurcation radiation part, the short-circuit radiation part and the extension radiation part are all arranged on the carrier element. The feed-in radiation portion, the connection radiation portion, the branch radiation portion, the short-circuit radiation portion, and the extension radiation portion together form an antenna structure.

Description

Wearable Devices

Technical Field

The utility model relates to a wearable device, and more particularly to a wearable device and an antenna structure thereof.

Background technique

With the development of mobile communication technology, mobile devices have become increasingly popular in recent years, such as laptops, mobile phones, multimedia players and other hybrid portable electronic devices. In order to meet people's needs, mobile devices usually have wireless communication functions. 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.

According to the research direction of major brands, the next generation of emerging mobile devices is likely to be "wearable devices". For example, watches, glasses, and even clothes may have wireless communication functions in the future. However, taking a watch as an example, the internal space of a wearable device is very small and not enough to accommodate an antenna for wireless communication, which will become a big challenge for antenna designers.

Utility Model Content

In a preferred embodiment, the utility model proposes a wearable device, comprising: a feed radiation portion having a feed point; a connecting radiation portion coupled to the feed radiation portion; a forked radiation portion coupled to the connecting radiation portion; a short-circuit radiation portion, wherein the connecting radiation portion is further coupled to a ground point via the short-circuit radiation portion; an extended radiation portion coupled to the feed radiation portion; and a carrier element, wherein the feed radiation portion, the connecting radiation portion, the forked radiation portion, the short-circuit radiation portion, and the extended radiation portion are all arranged on the carrier element; wherein the feed radiation portion, the connecting radiation portion, the forked radiation portion, the short-circuit radiation portion, and the extended radiation portion together form an antenna structure.

In some embodiments, the wearable device is a smart watch, and the carrier element is a non-conductive watch frame.

In some embodiments, the connecting radiation portion, the bifurcated radiation portion, and the short-circuit radiation portion are all disposed on the same side of the feeding radiation portion, and the extending radiation portion is disposed on another side opposite to the feeding radiation portion.

In some embodiments, the bifurcated radiating portion includes a first branch portion, a second branch portion, a third branch portion, and a fourth branch portion.

In some embodiments, the short-circuit radiating portion has a meandering shape.

In some embodiments, a combination of the feeding radiation portion and the extending radiation portion is in an L-shape.

In some embodiments, the antenna structure covers a first frequency band and a second frequency band.

In some embodiments, the first frequency band is between 741 MHz and 782 MHz, and the second frequency band is between 1710 MHz and 2155 MHz.

In some embodiments, a total length of the feeding radiation portion, the connecting radiation portion, and the bifurcated radiation portion is substantially equal to 0.25 times the wavelength of the center frequency of the first frequency band.

In some embodiments, a total length of the feed radiation portion and the extended radiation portion is substantially equal to 0.25 times the wavelength of the lowest frequency of the second frequency band.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view showing a wearable device according to an embodiment of the present invention.

FIG. 2 is a left side view of a wearable device according to an embodiment of the present invention.

FIG. 3 is a right side view of a wearable device according to an embodiment of the present invention.

FIG. 4 is a voltage standing wave ratio diagram showing an antenna structure of a wearable device according to an embodiment of the present invention.

Description of Reference Numerals

100: Wearable devices

110: Feed radiation part

111: first end of the feed radiation part

112: Feed into the second end of the radiation portion

120: Connect the radiation part

121: first end connected to the radiation part

122: Connect the second end of the radiation part

130: Forked Radiation

134: first branch portion of the bifurcated radiation portion

135: second branch portion of the bifurcated radiation portion

136: The third branch portion of the bifurcated radiation portion

137: The fourth branch of the bifurcated radiation portion

140: Short-circuit radiation part

144: Z-shaped part of the short-circuit radiation part

145: Straight strip portion of short-circuited radiation portion

146: L-shaped part of the short-circuit radiation part

148: T-shaped slot

150: Extended radiation part

151: first end of the extended radiation portion

152: The second end of the extended radiation portion

170: Carrier element

178: Central opening of carrier element

190:Signal source

CP: Connection Point

FB1: First frequency band

FB2: Second frequency band

FP: Feed Point

GP: Grounding point

L1, L2: Length

VSS: Ground potential

Detailed ways

In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the following specifically lists the specific embodiments of the present invention and describes them in detail with reference to the accompanying drawings.

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. This 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 "include" and "comprise" mentioned throughout the specification and claims are open-ended terms and should be interpreted as "include but not limited to". The word "substantially" means that within an acceptable error range, those skilled in the art can solve the technical problem and achieve the basic technical effect within a certain error range. 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.

The following disclosure provides many different embodiments or examples to implement the different features of the present invention. The following disclosure describes specific examples of various components and their arrangement 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, the same reference symbols and/or marks may be reused in different examples of the following disclosure. 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.

In addition, spatially relative 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 drawings. In addition to the orientation shown in the drawings, these spatially relative 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 relative terms used herein may be interpreted accordingly.

FIG. 1 is a front view of a wearable device 100 according to an embodiment of the present invention. FIG. 2 is a left side view of a wearable device 100 according to an embodiment of the present invention. FIG. 3 is a right side view of a wearable device 100 according to an embodiment of the present invention. Please refer to FIGS. 1, 2, and 3 together. In some embodiments, the wearable device 100 is a wrist-wearable device, such as a smart watch or a smart sports bracelet.

In the embodiments of FIGS. 1 , 2 , and 3 , the wearable device 100 at least includes: a feeding radiation element 110, a connection radiation element 120, a bifurcated radiation element 130, a shorting radiation element 140, an extension radiation element 150, and a carrier element 170, wherein the feeding radiation element 110, the connection radiation element 120, the bifurcated radiation element 130, the shorting radiation element 140, and the extension radiation element 150 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 FIGS. 1, 2, and 3, the wearable device 100 may further include other components, such as: a battery, an hour hand, a minute hand, a second hand, a signal processing module, a counter, a processor, a thermometer, a barometer, a time adjuster, a connecting strap, a waterproof housing, or (and) a buckle, etc.

The feeding radiation portion 110 can be roughly in the shape of a straight strip. In detail, the feeding radiation portion 110 has a first end 111 and a second end 112, wherein a feeding point (Feeding Point) FP is located at the first end 111 of the feeding radiation portion 110. The feeding point FP can be further coupled to a signal source (Signal Source) 190. For example, the signal source 190 can be a radio frequency (RF) module. In some embodiments, the connecting radiation portion 120, the bifurcated radiation portion 130, and the short-circuit radiation portion 140 can all be arranged on the same side of the feeding radiation portion 110 (for example: the left side), and the extended radiation portion 150 can be arranged on the other side of the feeding radiation portion 110 (for example: the right side).

The connecting radiation portion 120 may be substantially in the shape of a straight strip of unequal width, and may be substantially perpendicular to the feeding radiation portion 110. In detail, the connecting radiation portion 120 has a first end 121 and a second end 122, wherein the first end 121 of the connecting radiation portion 120 is coupled to the second end 112 of the feeding radiation portion 110, and the second end 122 of the connecting radiation portion 120 is coupled to the bifurcated radiation portion 130.

The forked radiation portion 130 may be coupled to the feed radiation portion 110 via the connecting radiation portion 120. In some embodiments, the forked radiation portion 130 includes a first branch portion 134, a second branch portion 135, a third branch portion 136, and a fourth branch portion 137 that are coupled to each other. For example, the first branch portion 134, the second branch portion 135, and the fourth branch portion 137 of the forked radiation portion 130 may each be substantially in an arc shape or a straight strip shape, and the third branch portion 136 of the forked radiation portion 130 may be substantially in a J shape, but is not limited thereto.

The short-circuit radiation portion 140 can generally present a meandering shape. A connection point CP on the connection radiation portion 120 can be further coupled to a grounding point GP via the short-circuit radiation portion 140. The connection point CP can be adjacent to the first end 121 of the connection radiation portion 120. The grounding point GP can be further coupled to a ground potential VSS. For example, the ground potential VSS can be provided by a system ground plane of the wearable device 100 (not shown). In some embodiments, the short-circuit radiation portion 140 includes a Z-shaped portion 144, a straight strip portion 145, and an L-shaped portion 146 that are coupled to each other, but is not limited to this. In addition, the Z-shaped portion 144, the straight strip portion 145, and the L-shaped portion 146 of the short-circuit radiation portion 140 can also jointly surround a T-shaped slot 148. It must be noted that the term "adjacent" or "adjacent" in this specification may refer to a situation where the distance between two corresponding elements is less than a predetermined distance (for example, 10 mm or shorter), and may also include a situation where two corresponding elements are in direct contact with each other (that is, the aforementioned distance is shortened to 0).

The combination of the feed radiation portion 110 and the extension radiation portion 150 may be substantially in an L shape. Specifically, the extension radiation portion 150 has a first end 151 and a second end 152, wherein the first end 151 of the extension radiation portion 150 is coupled to the second end 112 of the feed radiation portion 110, and the second end 152 of the extension radiation portion 150 is an open end.

In some embodiments, if the wearable device 100 is a smart watch, the carrier element 170 may be a nonconductive watch frame. The shape and style of the carrier element 170 are not particularly limited in the present invention. For example, the carrier element 170 may have a central opening 178, and the central opening 178 may be substantially square. In addition, the feed radiation portion 110, the connecting radiation portion 120, the bifurcated radiation portion 130, the short-circuit radiation portion 140, and the extended radiation portion 150 may all be disposed on the carrier element 170.

In a preferred embodiment, the feed radiation portion 110, the connecting radiation portion 120, the bifurcated radiation portion 130, the short-circuit radiation portion 140, and the extended radiation portion 150 can together form an antenna structure of the wearable device 100. It should be understood that although the antenna structure of the wearable device 100 is a three-dimensional antenna structure, in other embodiments, the antenna structure of the wearable device 100 can also be changed to a planar antenna structure without affecting its communication function.

FIG4 is a diagram showing a voltage standing wave ratio (VSWR) of the antenna structure of the wearable 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 voltage standing wave ratio. According to the measurement results of FIG4 , the antenna structure of the wearable device 100 can at least cover a first frequency band (Frequency Band) FB1 and a second frequency band FB2. For example, the first frequency band FB1 can be between 741MHz and 782MHz, and the second frequency band FB2 can be between 1710MHz and 2155MHz. Therefore, the wearable device 100 will at least support broadband operation of LTE (Long Term Evolution).

In some embodiments, the operating principle of the antenna structure of the wearable device 100 may be as described below. The feed radiation portion 110, the connecting radiation portion 120, and the bifurcated radiation portion 130 may be jointly excited to generate the aforementioned first frequency band FB1. The feed radiation portion 110, the short-circuit radiation portion 140, and the extended radiation portion 150 may be jointly excited to generate the aforementioned second frequency band FB2. In detail, the extended radiation portion 150 may correspond to a relatively low frequency interval of the aforementioned second frequency band FB2, and the short-circuit radiation portion 140 may correspond to a relatively high frequency interval of the aforementioned second frequency band FB2. It must be noted that since the proposed antenna structure can be well integrated with the carrier element 170, the overall size of the wearable device 100 of the present invention can be further miniaturized.

In some embodiments, the component dimensions of the wearable device 100 may be as described below. The total length L1 of the feed radiating portion 110, the connecting radiating portion 120, and the bifurcated radiating portion 130 (or its first branch portion 134) may be approximately equal to 0.25 times the wavelength (λ/4) of the center frequency of the first frequency band FB1 of the antenna structure of the wearable device 100. The total length L2 of the feed radiating portion 110 and the extended radiating portion 150 may be approximately equal to 0.25 times the wavelength (λ/4) of the lowest frequency of the second frequency band FB2 of the antenna structure of the wearable device 100. The overall length of the wearable device 100 may be less than or equal to 42 mm. The overall width of the wearable device 100 may be less than or equal to 37 mm. The above component dimension ranges are obtained based on multiple experimental results, which help optimize the operational bandwidth and impedance matching of the antenna structure of the wearable device 100.

The utility model provides a novel wearable device. Compared with the traditional design method, the utility model has at least the advantages of small size, wide bandwidth, and low manufacturing cost, so it is very suitable for application in various miniaturized devices with communication functions.

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 wearable device of the present invention is not limited to the states shown in Figures 1-4. The present invention may only include any one or more features of any one or more embodiments of Figures 1-4. In other words, not all the features shown in the figures need to be implemented in the wearable device of the present invention at the same time.

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 components with the same name.

Although the present invention is disclosed as above with reference to the preferred embodiments, it is not intended to limit the scope of the present invention. Anyone skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the appended claims.

Claims (10)

1. A wearable device, comprising: A feeding radiation portion having a feeding point; A connecting radiation portion coupled to the feeding radiation portion; a bifurcated radiation portion, coupled to the connecting radiation portion; a short-circuit radiation portion, wherein the connection radiation portion is further coupled to a ground point via the short-circuit radiation portion; an extended radiation portion, coupled to the feeding radiation portion; and A carrier element, wherein the feed radiation portion, the connection radiation portion, the bifurcated radiation portion, the short-circuit radiation portion, and the extended radiation portion are all disposed on the carrier element; The feeding radiation part, the connecting radiation part, the bifurcated radiation part, the short-circuit radiation part, and the extending radiation part together form an antenna structure. 2. The wearable device as claimed in claim 1, wherein the wearable device is a smart watch, and the carrier element is a non-conductive watch frame. 3. The wearable device as claimed in claim 1, wherein the connecting radiation portion, the bifurcated radiation portion, and the short-circuit radiation portion are all disposed on the same side of the feeding radiation portion, and the extending radiation portion is disposed on another side opposite to the feeding radiation portion. 4. The wearable device as described in claim 1 is characterized in that the bifurcated radiation portion includes a first branch portion, a second branch portion, a third branch portion, and a fourth branch portion. 5. The wearable device as claimed in claim 1, wherein the short-circuit radiation portion has a meandering shape. 6 . The wearable device as claimed in claim 1 , wherein a combination of the feed radiation portion and the extended radiation portion presents an L-shape. 7 . The wearable device as claimed in claim 1 , wherein the antenna structure covers a first frequency band and a second frequency band. 8. The wearable device as claimed in claim 7, wherein the first frequency band is between 741 MHz and 782 MHz, and the second frequency band is between 1710 MHz and 2155 MHz. 9. The wearable device as claimed in claim 7, wherein a total length of the feeding radiation portion, the connecting radiation portion, and the bifurcated radiation portion is substantially equal to 0.25 times the wavelength of the center frequency of the first frequency band. 10 . The wearable device of claim 7 , wherein a total length of the feeding radiation portion and the extended radiation portion is substantially equal to 0.25 times the wavelength of the lowest frequency of the second frequency band.