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 device

Technical Field

The present utility model relates to a wearable device, and more particularly, to a wearable device and an antenna structure (Antenna Structure) thereof.

Background

With the development of mobile communication technology, mobile devices are becoming more common in recent years, and common examples include: portable computers, mobile phones, multimedia players, and other portable electronic devices with mixed functionality. To meet the needs of people, mobile devices often have wireless communication functions. Some cover long-range wireless communication ranges, such as: mobile phones use 2G, 3G, LTE (Long Term Evolution) systems and their frequency bands of 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz, and 2500MHz for communication, and some cover short range wireless communication ranges, such as: wi-Fi, bluetooth systems use the frequency bands of 2.4GHz, 5.2GHz, and 5.8GHz for communication.

Depending on the research direction of the various brands of factories, the next generation of emerging mobile devices will likely be "wearable devices (Wearable Device"). For example watches, glasses and even clothing on the body, have the opportunity to have wireless communication in the future. However, taking a wristwatch in a wearable device as an example, the internal space is very small enough to accommodate the antenna for wireless communication, which becomes a challenge for the antenna designer.

Disclosure of utility model

In a preferred embodiment, the present utility model provides a wearable device, comprising: a feed-in radiation part with a feed-in point; a connection radiation part coupled to the feed radiation part; a bifurcated radiating portion coupled to the connecting radiating portion; a short-circuit radiation part, wherein the connection radiation part is further coupled to a grounding point through the short-circuit radiation part; an extension radiation part coupled to the feed radiation part; 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; wherein 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.

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

In some embodiments, the connection radiating portion, the bifurcation radiating portion, and the short-circuit radiating portion are all disposed on the same side of the feed-in radiating portion, and the extension radiating portion is disposed on the opposite side of the feed-in radiating 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 radiation portion has a serpentine shape.

In some embodiments, the combination of the feed radiation portion and the extension 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 741MHz and 782MHz and the second frequency band is between 1710MHz and 2155 MHz.

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

Drawings

Fig. 1 is a front view of a wearable device according to an embodiment of the utility model.

Fig. 2 is a left side view of a wearable device according to an embodiment of the utility model.

Fig. 3 is a right side view of a wearable device according to an embodiment of the utility model.

Fig. 4 is a voltage standing wave ratio diagram showing an antenna structure of a wearable device according to an embodiment of the utility model.

Description of the reference numerals

100 Wearable device

110 Feed-in radiation part

111 First end of feed-in radiation part

112 Feeding the second end of the radiating part

120 Connecting the radiating portion

121 To the first end of the radiating portion

122 A second end connected to the radiating portion

130 Furcation radiating portion

134 First branch portion of bifurcated radiating portion

135 Second branch portion of the branch radiating portion

136 Third branch portion of bifurcated radiating portion

137 Fourth branch portion of bifurcated radiating portion

140 Short-circuit radiation part

144Z-shaped portion of short-circuit radiation portion

145 Short-circuiting the straight strip-shaped portion of the radiating portion

146L-shaped portion of short-circuit radiation portion

148T-shaped slotted hole

150 Extending the radiating portion

151 Extending the first end of the radiating portion

152 Extending the second end of the radiating portion

170 Carrier element

178 Central opening of the carrier element

190 Signal source

CP connecting point

FB1 first frequency band

FB2 second frequency band

FP feed-in point

GP: ground point

L1, L2 length

VSS ground potential

Detailed Description

The present utility model will be described in more detail with reference to the drawings, wherein the utility model is shown in the drawings.

Certain terms are used throughout the description and claims to refer to particular components. Those of ordinary skill in the art will appreciate that a hardware manufacturer may refer to the same element by different names. The description and claims do not take the form of an element differentiated by name, but rather by functional differences. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The term "substantially" means that within an acceptable error range, a person skilled in the art can solve the above-mentioned technical problem within a certain error range, and achieve the above-mentioned basic technical effect. In addition, the term "coupled" in this specification includes any direct or indirect electrical connection. Accordingly, if a first device couples to a second device, that connection may be through a direct electrical connection, or through an indirect electrical connection via other devices and connections.

The following disclosure provides many different embodiments, or examples, for implementing different features of the disclosure. The following disclosure describes specific examples of various components and arrangements thereof to simplify the description. Of course, these specific examples are not intended to be limiting. For example, if the disclosure describes a first feature being formed on or over a second feature, that means that it may include embodiments in which the first feature is in direct contact with the second feature, and that additional features may be 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 following disclosure may repeat reference numerals and/or letters in the various examples. These repetition are for the purpose of simplicity and clarity and does not in itself dictate a particular relationship between the various embodiments and/or configurations discussed.

Furthermore, it is used in relation to space. Such as "below" …, "below" lower "upper" higher "and the like, are used for convenience in describing the relationship between one element or feature and another element(s) or feature in the figures. In addition to the orientations depicted in the drawings, these spatially relative terms are intended to encompass different orientations of the device in use or operation. The device may be turned to a different orientation (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 is a front view of a wearable device (Wearable Device) 100 according to one embodiment of the present utility model. Fig. 2 is a left side view of the wearable device 100 according to an embodiment of the utility model. Fig. 3 is a right side view of the wearable device 100 according to an embodiment of the utility model. Please refer to fig. 1, 2, and 3 together. In some embodiments, wearable Device 100 is a wrist-wearable Device (Wrist-w/able Device), such as: a smart watch (SMART WATCH), or a smart sport wristband.

In the embodiments of fig. 1, 2, 3, the wearable device 100 comprises at least: a feed-in radiating portion (Feeding Radiation Element) 110, a connecting radiating portion (Connection Radiation Element) 120, a bifurcated radiating portion (Bifurcate Radiation Element) 130, a short-circuit radiating portion (Shorting Radiation Element) 140, an extension radiating portion (Extension Radiation Element) 150, and a carrier element (CARRIER ELEMENT) 170, wherein the feed-in radiating portion 110, the connecting radiating portion 120, the bifurcated radiating portion 130, the short-circuit radiating portion 140, and the extension radiating portion 150 can be made of metal materials, such as: copper, silver, aluminum, iron, or alloys thereof. It should be understood that, although not shown in fig. 1, 2, and 3, the wearable device 100 may further include other elements, 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 band, a waterproof housing, or (and) a clasp, etc.

The feed-in radiation portion 110 may have a substantially straight strip shape. 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 feed point FP may be further coupled to a Signal Source 190. For example, the signal source 190 may be a Radio Frequency (RF) module. In some embodiments, the connection radiating portion 120, the bifurcation radiating portion 130, and the short-circuit radiating portion 140 may be disposed on the same side (e.g., left side) of the feed radiating portion 110, and the extension radiating portion 150 may be disposed on the opposite side (e.g., right side) of the feed radiating portion 110.

The connection radiating portion 120 may substantially have a bar shape with different widths, which may be substantially perpendicular to the feeding radiating portion 110. In detail, the connection radiating portion 120 has a first end 121 and a second end 122, wherein the first end 121 of the connection radiating portion 120 is coupled to the second end 112 of the feeding radiating portion 110, and the second end 122 of the connection radiating portion 120 is coupled to the bifurcated radiating portion 130.

The bifurcated radiating portion 130 may be coupled to the feed radiating portion 110 via the connection radiating portion 120. In some embodiments, the bifurcated radiating Portion 130 includes a first Branch Portion 134, a second Branch Portion 135, a third Branch Portion 136, and a fourth Branch Portion 137 coupled to each other. For example, the first branch portion 134, the second branch portion 135, and the fourth branch portion 137 of the bifurcated radiating portion 130 may each have a substantially arc shape or a straight shape, and the third branch portion 136 of the bifurcated radiating portion 130 may have a substantially J-shape, but is not limited thereto.

The short-circuit radiation portion 140 may substantially take a serpentine shape (MEANDERING SHAPE). A Connection Point CP on the Connection radiating portion 120 may be further coupled to a ground Point Grounding Point GP through the short-circuit radiating portion 140. The connection point CP may be adjacent to the first end 121 of the connection radiating portion 120. The Ground point GP may be further coupled to a 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 radiating portion 140 includes, but is not limited to, a zigzag portion 144, a straight portion 145, and an L-shaped portion 146 that are coupled to each other. In addition, the zigzag portion 144, the straight strip portion 145, and the L-shaped portion 146 of the short-circuit radiation portion 140 may also collectively enclose a T-Slot (Slot) 148. It should be noted that the term "adjacent" or "adjacent" in the present specification may refer to the corresponding elements having a distance smaller than a predetermined distance (e.g., 10mm or less), and may include the case where the corresponding elements are in direct contact with each other (i.e., the distance is reduced to 0).

The combination of the feed radiation portion 110 and the extension radiation portion 150 may have a substantially L-shape. In detail, the extended radiating portion 150 has a first End 151 and a second End 152, wherein the first End 151 of the extended radiating portion 150 is coupled to the second End 112 of the feeding radiating portion 110, and the second End 152 of the extended radiating portion 150 is an Open End (Open End).

In some embodiments, if the wearable device 100 is a smart watch, the carrier element 170 may be a non-conductive bezel (Nonconductive WATCH FRAME). The shape and style of the carrier member 170 is not particularly limited in the present utility model. For example, the carrier member 170 may have a Central Opening 178, and the Central Opening 178 may have a substantially square shape. In addition, the feed radiation portion 110, the connection radiation portion 120, the branch radiation portion 130, the short circuit radiation portion 140, and the extension radiation portion 150 may be disposed on the carrier element 170.

In the preferred embodiment, the feed radiating portion 110, the connecting radiating portion 120, the bifurcated radiating portion 130, the short-circuit radiating portion 140, and the extension radiating portion 150 together form an antenna structure (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 be changed to a planar antenna structure without affecting the communication function.

Fig. 4 is a Voltage Standing Wave Ratio (VSWR) diagram of an antenna structure of the wearable device 100 according to an embodiment of the utility model, wherein a horizontal axis represents an operating frequency (MHz) and a vertical axis represents the Voltage standing wave Ratio. According to the measurement result of fig. 4, the antenna structure of the wearable device 100 can cover at least 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 2155 MHz. Thus, the wearable device 100 can support at least LTE (Long Term Evolution) wide band operation.

In some embodiments, the principle of operation of the antenna structure of the wearable device 100 may be as follows. The feed radiation portion 110, the connection radiation portion 120, and the branch radiation portion 130 can jointly excite the first frequency band FB1. The feed radiation portion 110, the short-circuit radiation portion 140, and the extension radiation portion 150 can jointly excite the second frequency band FB2. In detail, the extended radiating portion 150 may correspond to a relatively low frequency region of the second frequency band FB2, and the short-circuit radiating portion 140 may correspond to a relatively high frequency region of the second frequency band FB2. It should be noted that the overall size of the wearable device 100 of the present utility model can be further reduced because the proposed antenna structure can be well integrated with the carrier element 170.

In some embodiments, the dimensions of the elements of wearable device 100 may be as follows. The total length L1 of the feed radiation portion 110, the connection radiation portion 120, and the branch radiation portion 130 (or the first branch portion 134 thereof) may be approximately equal to 0.25 times 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 radiation portion 110 and the extension radiation portion 150 may be approximately equal to 0.25 times 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 42mm. The overall width of the wearable device 100 may be less than or equal to 37mm. The above range of element sizes is derived from a number of experimental results, which helps to optimize the operation bandwidth (Operational Bandwidth) and impedance matching (IMPEDANCE MATCHING) of the antenna structure of the wearable device 100.

The utility model provides a novel wearable device. Compared with the traditional design mode, the utility model has the advantages of at least small size, wide frequency band and low manufacturing cost, so that the utility model is very suitable for being applied to various miniaturized devices with communication functions.

It should be noted that the device size, device shape, and frequency range are not limitations of the present utility model. The antenna designer may adjust these settings according to different needs. The wearable device of the present utility model is not limited to the states illustrated in fig. 1-4. The present utility model may include only any one or more features of any one or more of the embodiments of fig. 1-4. In other words, not all of the illustrated features need be implemented in the wearable device of the present utility model at the same time.

Ordinal numbers such as "first," "second," "third," and the like in the description and in the claims are used for distinguishing between two different elements having the same name and not necessarily for describing a sequential or chronological order.

While the utility model has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. A wearable device, comprising:

A feed-in radiation part with a feed-in point;

A connection radiation part coupled to the feed radiation part;

A bifurcated radiating portion coupled to the connecting radiating portion;

a short-circuit radiation part, wherein the connection radiation part is further coupled to a grounding point through the short-circuit radiation part;

An extension radiation part coupled to the feed radiation part; and

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;

Wherein 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.

2. The wearable device of claim 1, wherein the wearable device is a smart watch and the carrier element is a non-conductive bezel.

3. The wearable device of claim 1, wherein the connection radiating portion, the bifurcated radiating portion, and the short-circuit radiating portion are disposed on a same side of the feed-in radiating portion, and the extension radiating portion is disposed on an opposite side of the feed-in radiating portion.

4. The wearable device of claim 1, wherein the bifurcated radiating portion comprises a first branch portion, a second branch portion, a third branch portion, and a fourth branch portion.

5. The wearable device of claim 1, wherein the short-circuit radiation portion has a serpentine shape.

6. The wearable device of claim 1, wherein the combination of the feed-in radiating portion and the extension radiating portion is in an L-shape.

7. The wearable device of claim 1, wherein the antenna structure covers a first frequency band and a second frequency band.

8. 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 2155 MHz.

9. The wearable device of claim 7, wherein the total length of the feed-in radiating portion, the connection radiating portion, and the bifurcated radiating portion is approximately equal to 0.25 times the wavelength of the center frequency of the first frequency band.

10. The wearable device of claim 7, wherein the total length of the feed radiation portion and the extension radiation portion is approximately equal to 0.25 times the wavelength of the lowest frequency of the second frequency band.