TWM651564U - Wearable device - Google Patents

Abstract

A wearable device includes a feeding radiation element, a connection radiation element, a bifurcate radiation element, a shorting radiation element, an extension radiation element, and a carrier element. The feeding radiation element has a feeding point. The connection radiation element is coupled to the feeding radiation element. The bifurcate radiation element is coupled to the connection radiation element. The connection radiation element is also coupled through the shorting radiation element to a grounding point. The extension radiation element is coupled to the feeding radiation element. The feeding radiation element, the connection radiation element, the bifurcate radiation element, the shorting radiation element, and the extension radiation element are disposed on the carrier element. An antenna structure is formed by the feeding radiation element, the connection radiation element, the bifurcate radiation element, the shorting radiation element, and the extension radiation element.

Description

wearable devices

This invention relates to a wearable device, in particular to a wearable device and its antenna structure (Antenna Structure).

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

According to the research directions of major brands, the next generation of emerging mobile devices is likely to be "wearable devices." For example, watches, glasses, and even clothing may have wireless communication capabilities in the future. However, taking a watch in a wearable device as an example, the internal space is very small and cannot accommodate the antenna used for wireless communication, so it will become a big challenge for antenna designers.

In a preferred embodiment, the present invention proposes a wearable device, including: a feed radiating part having a feed point; a connecting radiating part coupled to the feeding radiating part; and a bifurcated radiating part coupled to connected to the connection radiating part; a short-circuit radiating part, wherein the connection radiating part is further coupled to a ground point via the short-circuit radiating part; an extension radiating part coupled to the feed radiating part; and a carrier element, wherein The feed radiation part, the connection radiation part, the bifurcation radiation part, the short-circuit radiation part, and the extension radiation part are all disposed on the carrier element; wherein the feed radiation part, the connection radiation part, the bifurcation radiation part The radiating part, the short-circuit radiating part, and the extended radiating part jointly 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 connection radiating part, the bifurcated radiating part, and the short-circuit radiating part are all disposed on the same side of the feed radiating part, and the extension radiating part is disposed on the opposite side of the feed radiating part. one side.

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

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

In some embodiments, the combination of the feed radiation part and the extension radiation part presents 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, the total length of the feed radiation part, the connection radiation part, and the branch radiation part is approximately equal to 0.25 times the wavelength of the center frequency of the first frequency band.

In some embodiments, the total length of the feed radiation part and the extension radiation part is approximately equal to 0.25 times the wavelength of the lowest frequency of the second frequency band.

In order to make the purpose, features and advantages of this invention more obvious and easy to understand, specific embodiments of this invention are listed below and explained in detail with the attached drawings.

Certain words are used in the specification and patent 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 patent application do not use differences in names as a way to distinguish components, but differences in functions of components as a criterion for distinction. The words "include" and "include" mentioned throughout the specification and the scope of the patent application are open-ended terms, and therefore should be interpreted as "include but not limited to." The term "approximately" 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 "coupling" in this specification includes any direct and indirect electrical connection means. Therefore, if a first device is 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 connections. Two devices.

The following disclosure provides many different embodiments or examples for implementing different features of the present invention. The following disclosure describes specific examples of each component and its arrangement to simplify the explanation. Of course, these specific examples are not limiting. For example, if this disclosure describes that a first feature is 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, or may include an additional Embodiments in which the feature is formed between the first feature and the second feature such 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 repeatedly used in different examples of the following disclosures. These repetitions are for the purpose of simplicity and clarity and are not intended to limit specific relationships between the various embodiments and/or structures discussed.

Furthermore, it is worded in relation to space. For example, "below", "below", "lower", "above", "higher" and similar terms are used to facilitate the description of one element or feature in the illustrations in relation to another element(s) or relationships between features. These spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings. The device may be turned in different orientations (rotated 90 degrees or at other orientations) and the spatially relative terms used herein interpreted accordingly.

Figure 1 shows a front view of a wearable device (Wearable Device) 100 according to an embodiment of the present invention. Figure 2 shows a left side view of the wearable device 100 according to an embodiment of the invention. Figure 3 shows a right side view of the wearable device 100 according to an embodiment of the present invention. Please refer to Figures 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 shown in Figures 1, 2, and 3, the wearable device 100 at least includes: a feeding radiation element 110, a connection radiation element 120, and a bifurcation radiation element. Radiation Element) 130, a Shorting Radiation Element 140, an Extension Radiation Element 150, and a Carrier Element 170, wherein the feed radiation part 110, the connection radiation part 120, the branch The fork radiating part 130, the short-circuit radiating part 140, and the extended radiating part 150 can all be made of metal materials, such as copper, silver, aluminum, iron, or alloys thereof. It must be understood that, although not shown in Figures 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 A counter, a processor, a thermometer, a barometer, a time adjuster, a connecting strap, a waterproof shell, or/and a buckle, etc.

The feed radiation part 110 may be substantially in a straight strip shape. In detail, the feeding radiation part 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 part 110. The feed point FP can further be coupled to a signal source (Signal Source) 190. For example, the signal source 190 may be a radio frequency (Radio Frequency, RF) module. In some embodiments, the connecting radiating part 120, the bifurcated radiating part 130, and the short-circuit radiating part 140 may be disposed on the same side (for example, the left side) of the feed radiating part 110, and the extension radiating part 150 may be disposed on the feed radiating part 110. Enter the opposite side (for example, the right side) of the radiation part 110 .

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

The bifurcated radiating part 130 may be coupled to the feed radiating part 110 via the connecting radiating part 120 . In some embodiments, the branch radiating portion 130 includes a first branch portion (Branch Portion) 134, a second branch portion 135, a third branch portion 136, and a fourth branch that are coupled to each other. Part 137. For example, the first branch portion 134 , the second branch portion 135 , and the fourth branch portion 137 of the bifurcated radiating portion 130 can each roughly present an arc shape or a straight line shape, and the third branch portion 130 of the bifurcated radiating portion 130 The branch portion 136 may roughly present a J-shape, but is not limited to this.

The short-circuit radiation part 140 may generally exhibit a meandering shape. A connection point (Connection Point) CP on the connection radiating part 120 can be further coupled to a grounding point (Grounding Point) GP through the short-circuit radiating part 140 . The connection point CP may be adjacent to the first end 121 of the connection radiating part 120 . The ground point GP can further be coupled to a ground potential (Ground Voltage) VSS. For example, the ground potential VSS may be provided by a system ground plane (System Ground Plane) of the wearable device 100 (not shown). In some embodiments, the short-circuit radiation part 140 includes a Z-shaped part 144, a straight strip part 145, and an L-shaped part 146 that are coupled to each other, but it is not limited thereto. 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 collectively surround a T-shaped slot 148. It must be noted that the term "adjacent" or "adjacent" in this specification can mean that the distance between two corresponding components is less than a predetermined distance (for example: 10mm or less), or it can also include that the distance between two corresponding components is in direct contact with each other. situation (that is, the aforementioned spacing is shortened to 0).

The combination of the feed radiation part 110 and the extension radiation part 150 may roughly form an L shape. In detail, the extending radiating part 150 has a first end 151 and a second end 152, wherein the first end 151 of the extending radiating part 150 is coupled to the second end 112 of the feeding radiating part 110, and the extending radiating part 150 has a first end 151 and a second end 152. The second end 152 of 150 is an open end.

In some embodiments, if the wearable device 100 is a smart watch, the carrier component 170 may be a nonconductive watch frame. The shape and style of the carrier element 170 are not particularly limited in this 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 part 110 , the connection radiation part 120 , the branch radiation part 130 , the short-circuit radiation part 140 , and the extension radiation part 150 can all be disposed on the carrier element 170 .

In a preferred embodiment, the feed radiating part 110, the connecting radiating part 120, the bifurcated radiating part 130, the short-circuit radiating part 140, and the extending radiating part 150 may together form an antenna structure (Antenna Structure) of the wearable device 100. It must 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.

Figure 4 is a voltage standing wave ratio (VSWR) diagram showing the antenna structure of the wearable device 100 according to an embodiment of the present invention, in which the horizontal axis represents the operating frequency (MHz), and the vertical axis represents Voltage standing wave ratio. According to the measurement results in Figure 4, 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 may be between 741MHz and 782MHz, and the second frequency band FB2 may be between 1710MHz and 2155MHz. Therefore, the wearable device 100 will at least support LTE (Long Term Evolution) broadband operation.

In some embodiments, the operating principle of the antenna structure of the wearable device 100 may be as follows. The feed radiation part 110, the connection radiation part 120, and the branch radiation part 130 can jointly excite to generate the aforementioned first frequency band FB1. The feed radiation part 110, the short-circuit radiation part 140, and the extension radiation part 150 can jointly excite and generate the aforementioned second frequency band FB2. In detail, the extended radiation part 150 may correspond to a relatively low frequency interval of the aforementioned second frequency band FB2, and the short-circuit radiation part 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 reduced.

In some embodiments, component dimensions of the wearable device 100 may be as follows. The total length L1 of the feed radiating part 110, the connecting radiating part 120, and the bifurcated radiating part 130 (or its first branch part 134) may be approximately equal to the center frequency of the first frequency band FB1 of the antenna structure of the wearable device 100. 0.25 times wavelength (λ/4). The total length L2 of the feed radiation part 110 and the extension radiation part 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 size range is obtained based on the results of multiple experiments, which helps to optimize the operational bandwidth (Operational Bandwidth) and impedance matching (Impedance Matching) of the antenna structure of the wearable device 100.

This invention proposes a novel wearable device. Compared with traditional design methods, this invention at least has 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 limitations of this invention. Antenna designers can adjust these settings according to different needs. The wearable device of this invention is not limited to the state shown in Figures 1-4. The present invention may only include any one or multiple features of any one or multiple embodiments of Figures 1-4. In other words, not all the features shown in the illustrations need to be implemented in the wearable device of this invention at the same time.

The ordinal numbers in this specification and the scope of the patent application, such as "first", "second", "third", etc., have no sequential relationship with each other. They are only used to distinguish two items with the same Different components with names.

Although this invention is disclosed as a preferred embodiment, it is not intended to limit the scope of this invention. Anyone familiar with this art can make some changes and modifications without departing from the spirit and scope of this invention. Therefore, The scope of protection of this creation shall be determined by the appended patent application scope.

100:Wearable devices 110: Feed into the radiation part 111: Feed into the first end of the radiating part 112: Feed into the second end of the radiating part 120: Connect the radiating part 121: Connect the first end of the radiating part 122: Connect the second end of the radiating part 130: Bifurcated radiating part 134: The first branch of the bifurcated radial part 135: The second branch of the bifurcated radial part 136: The third branch of the bifurcated radiating part 137: The fourth branch of the bifurcated radiating part 140: Short circuit radiation part 144: Z-shaped part of short-circuit radiation part 145: The straight strip part of the short-circuit radiation part 146: The L-shaped part of the short-circuit radiation part 148: T-shaped slot 150: Extended Radiation Department 151: The first end of the extended radiating part 152: The second end of the extended radiating part 170: Carrier component 178: Central opening of carrier element 190:Signal source CP: connection point FB1: First frequency band FB2: Second frequency band FP: feed point GP: ground point L1, L2: length VSS: ground potential

Figure 1 shows a front view of a wearable device according to an embodiment of the present invention. Figure 2 shows a left side view of a wearable device according to an embodiment of the invention. Figure 3 shows a right side view of the wearable device according to an embodiment of the present invention. Figure 4 is a voltage standing wave ratio diagram showing the antenna structure of the wearable device according to an embodiment of the present invention.

100:Wearable devices

110: Feed into the radiation part

111: Feed into the first end of the radiating part

112: Feed into the second end of the radiating part

120: Connect the radiating part

121: Connect the first end of the radiating part

122: Connect the second end of the radiating part

130: Bifurcated radiating part

134: The first branch of the bifurcated radial part

136: The third branch of the bifurcated radiating part

137: The fourth branch of the bifurcated radiating part

140: Short circuit radiation part

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

145: The straight strip part of the short-circuit radiation part

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

148: T-shaped slot

150: Extended Radiation Department

151: The first end of the extended radiating part

170: Carrier component

178: Central opening of carrier element

190:Signal source

CP: connection point

FP: feed point

GP: ground point

L1:Length

VSS: ground potential

Claims (10)

A wearable device including: A feed radiation part has a feed point; a connecting radiation part coupled to the feed radiation part; a bifurcated radiating part coupled to the connecting radiating part; a short-circuit radiation part, wherein the connection radiation part is further coupled to a ground point through the short-circuit radiation part; an extended radiating part coupled to the feed radiating part; and A carrier component, wherein the feed radiation part, the connection radiation part, the branch radiation part, the short-circuit radiation part, and the extension radiation part are all disposed on the carrier component; The feed radiation part, the connection radiation part, the bifurcation radiation part, the short-circuit radiation part, and the extension radiation part jointly form an antenna structure. The wearable device of claim 1, wherein the wearable device is a smart watch, and the carrier component is a non-conductive watch frame. The wearable device of claim 1, wherein the connection radiating part, the bifurcated radiating part, and the short-circuit radiating part are all disposed on the same side of the feed radiating part, and the extension radiating part is disposed on the feed radiating part The opposite side of the department. The wearable device of claim 1, wherein the bifurcated radiation part includes a first branch part, a second branch part, a third branch part, and a fourth branch part. The wearable device of claim 1, wherein the short-circuit radiation part presents a meandering shape. The wearable device of claim 1, wherein the combination of the feed radiation part and the extension radiation part presents an L shape. The wearable device of claim 1, wherein the antenna structure covers a first frequency band and a second frequency band. For example, the wearable device of claim 7, wherein the first frequency band is between 741MHz and 782MHz, and the second frequency band is between 1710MHz and 2155MHz. The wearable device of claim 7, wherein the total length of the feed radiation part, the connection radiation part, and the branch radiation part is approximately equal to 0.25 times the wavelength of the center frequency of the first frequency band. The wearable device of claim 7, wherein the total length of the feed radiation part and the extension radiation part is approximately equal to 0.25 times the wavelength of the lowest frequency of the second frequency band.

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