US-12620692-B2 - Wearable device

US12620692B2US 12620692 B2US12620692 B2US 12620692B2US-12620692-B2

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.

Inventors

Ying-Cong Deng
Chung-Ting Hung
Chin-Lung Tsai

Assignees

QUANTA COMPUTER INC.

Dates

Publication Date: 20260505
Application Date: 20231228
Priority Date: 20230923

Claims (11)

1 . A wearable device, comprising: a feeding radiation element, having a feeding point; a connection radiation element, coupled to the feeding radiation element; a bifurcate radiation element, coupled to the connection radiation element; a shorting radiation element, wherein the connection radiation element is coupled through the shorting radiation element to a grounding point; an extension radiation element, coupled to the feeding radiation element; and a carrier element, wherein 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; wherein 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; wherein the bifurcate radiation element comprises a first branch portion, a second branch portion, a third branch portion, and a fourth branch portion; wherein each of the first branch portion and the second branch portion substantially has an arc-shape; wherein the second branch portion extends along the first branch portion.
2 . The wearable device as claimed in claim 1 , wherein the wearable device is a smart watch, and the carrier element is a nonconductive watch frame.
3 . The wearable device as claimed in claim 1 , wherein the connection radiation element, the bifurcate radiation element, and the shorting radiation element are disposed at a same side of the feeding radiation element, and the extension radiation element is disposed at an opposite side of the feeding radiation element.
4 . The wearable device as claimed in claim 1 , wherein the shorting radiation element substantially has a meandering shape.
5 . The wearable device as claimed in claim 1 , wherein a combination of the feeding radiation element and the extension radiation element substantially has an L-shape.
6 . The wearable device as claimed in claim 1 , wherein the antenna structure covers a first frequency band and a second frequency band.
7 . The wearable device as claimed in claim 6 , wherein the first frequency band is from 741 MHz to 782 MHz, and the second frequency band is from 1710 MHz to 2155 MHz.
8 . The wearable device as claimed in claim 6 , wherein a total length of the feeding radiation element, the connection radiation element, and the bifurcate radiation element is substantially equal to 0.25 wavelength of a central frequency of the first frequency band.
9 . The wearable device as claimed in claim 6 , wherein a total length of the feeding radiation element and the extension radiation element is substantially equal to 0.25 wavelength of the lowest frequency of the second frequency band.
10 . The wearable device as claimed in claim 1 , wherein the third branch portion substantially has a J-shape.
11 . The wearable device as claimed in claim 1 , wherein the third branch portion is at least partially surrounded by the first branch portion and the fourth branch portion.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application claims priority of Taiwan Patent Application No. 112210333 filed on Sep. 23, 2023, the entirety of which is incorporated by reference herein. BACKGROUND OF THE INVENTION Field of the Invention The disclosure relates in general to a wearable device, and in particular, to a wearable device and an antenna structure therein. Description of the Related Art With the advancements being made in mobile communication technology, mobile devices such as portable computers, mobile phones, multimedia players, and other hybrid functional portable electronic devices have become more common. To satisfy consumer demand, mobile devices can usually perform wireless communication functions. Some devices cover a large wireless communication area; these include mobile phones using 2G, 3G, and LTE (Long Term Evolution) systems and using frequency bands of 700 MHZ, 850 MHz, 900 MHz, 1800 MHZ, 1900 MHZ, 2100 MHz, 2300 MHz, and 2500 MHz. Some devices cover a small wireless communication area; these include mobile phones using Wi-Fi systems and using frequency bands of 2.4 GHz, 5.2 GHz, and 5.8 GHz. Researchers predict that the next generation of mobile devices will be “wearable devices”. For example, wireless communication may be applied to watches, glasses, and even clothes in the future. However, watches, for example, do not have a large enough internal space to accommodate antennas for wireless communication. Therefore, this has become a critical challenge for antenna designers. BRIEF SUMMARY OF THE INVENTION In an exemplary embodiment, the invention is directed to a wearable device that 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 all 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. In some embodiments, the wearable device is a smart watch, and the carrier element is a nonconductive watch frame. In some embodiments, the connection radiation element, the bifurcate radiation element, and the shorting radiation element are disposed at the same side of the feeding radiation element. The extension radiation element is disposed at the opposite side of the feeding radiation element. In some embodiments, the bifurcate radiation element includes a first branch portion, a second branch portion, a third branch portion, and a fourth branch portion. In some embodiments, the shorting radiation element substantially has a meandering shape. In some embodiments, the combination of the feeding radiation element and the extension radiation element substantially has 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 from 741 MHz to 782 MHz, and the second frequency band is from 1710 MHz to 2155 MHz. In some embodiments, the total length of the feeding radiation element, the connection radiation element, and the bifurcate radiation element is substantially equal to 0.25 wavelength of the central frequency of the first frequency band. In some embodiments, the total length of the feeding radiation element and the extension radiation element is substantially equal to 0.25 wavelength of the lowest frequency of the second frequency band. BRIEF DESCRIPTION OF DRAWINGS The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein: FIG. 1 is a front view of a wearable device according to an embodiment of the invention; FIG. 2 is a left-side view of a wearable device according to an embodiment of the invention; FIG. 3 is a right-side view of a wearable device according to an embodiment of the invention; and FIG. 4 is a diagram of VSWR (Voltage Standing Wave Ratio) of an antenna structure of a wearable device according to an embodiment of the invention. DETAILED DESCRIPTION OF THE INVENTION In order to illustrate the purposes, features and advantages of the invention, the embodiments and figures of the invention are shown in detail as follows. Certain terms are used throughout the description and following claims to refer