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US-20260128516-A1 - MOBILE DEVICE SUPPORTING WIDEBAND OPERATION

US20260128516A1US 20260128516 A1US20260128516 A1US 20260128516A1US-20260128516-A1

Abstract

A mobile device includes a feeding radiation element, a first radiation element, a shorting radiation element, a second radiation element, a third radiation element, and a fourth radiation element. The feeding radiation element has a feeding point. The first radiation element is adjacent to the feeding radiation element. The first radiation element is coupled through the shorting radiation element to a ground voltage. The second radiation element is coupled to the shorting radiation element. The third radiation element is coupled to the first radiation element. The third radiation element is adjacent to the feeding radiation element. The fourth radiation element is coupled to the ground voltage. The fourth radiation element is adjacent to the feeding radiation element. An antenna structure is formed by the feeding radiation element, the first radiation element, the shorting radiation element, the second radiation element, the third radiation element, and the fourth radiation element.

Inventors

  • Kun-sheng Chang
  • Ching-Chi Lin

Assignees

  • ACER INCORPORATED

Dates

Publication Date
20260507
Application Date
20241217
Priority Date
20241105

Claims (15)

  1. 1 . A mobile device supporting wideband operations, comprising: a feeding radiation element, having a feeding point; a first radiation element, wherein the first radiation element is adjacent to the feeding radiation element; a shorting radiation element, wherein the first radiation element is coupled through the shorting radiation element to a ground voltage; a second radiation element, coupled to the shorting radiation element; a third radiation element, coupled to the first radiation element, wherein the third radiation element is adjacent to the feeding radiation element; and a fourth radiation element, coupled to the ground voltage, wherein the fourth radiation element is adjacent to the feeding radiation element; wherein an antenna structure is formed by the feeding radiation element, the first radiation element, the shorting radiation element, the second radiation element, the third radiation element, and the fourth radiation element.
  2. 2 . The mobile device as claimed in claim 1 , wherein the feeding radiation element comprises a first portion and a second portion, and an obtuse angle is formed between the first portion and the second portion.
  3. 3 . The mobile device as claimed in claim 2 , wherein the first radiation element further comprises a trapezoidal widening portion.
  4. 4 . The mobile device as claimed in claim 3 , wherein a first coupling gap is formed between the second portion of the feeding radiation element and the trapezoidal widening portion of the first radiation element.
  5. 5 . The mobile device as claimed in claim 4 , wherein a width of the first coupling gap is from 0.5 mm to 1.5 mm
  6. 6 . The mobile device as claimed in claim 2 , wherein a second coupling gap is formed between the first portion of the feeding radiation element and the third radiation element.
  7. 7 . The mobile device as claimed in claim 6 , wherein a width of the second coupling gap is from 0.5 mm to 1.5 mm.
  8. 8 . The mobile device as claimed in claim 2 , wherein a third coupling gap is formed between the second portion of the feeding radiation element and the fourth radiation element.
  9. 9 . The mobile device as claimed in claim 8 , wherein a width of the third coupling gap is from 0.5 mm to 1 mm.
  10. 10 . The mobile device as claimed in claim 1 , wherein the antenna structure covers a first frequency band, a second frequency band, and a third frequency band.
  11. 11 . The mobile device as claimed in claim 10 , wherein the first frequency band is from 2400 MHz to 2500 MHz, the second frequency band is from 5150 MHz to 5850 MHz, and the third frequency band is from 5925 MHz to 7125 MHz.
  12. 12 . The mobile device as claimed in claim 10 , wherein a total length of the first radiation element and the shorting radiation element is substantially equal to 0.25 wavelength of the first frequency band.
  13. 13 . The mobile device as claimed in claim 10 , wherein a total length of the first radiation element, the shorting radiation element and the second radiation element is substantially equal to 0.5 wavelength of the second frequency band.
  14. 14 . The mobile device as claimed in claim 10 , wherein a length of the feeding radiation element is substantially equal to 0.5 wavelength of the third frequency band.
  15. 15 . The mobile device as claimed in claim 10 , wherein a length of the fourth radiation element is substantially equal to 0.25 wavelength of the third frequency band.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application claims priority of Taiwan Patent Application No. 113142216 filed on Nov. 5, 2024, the entirety of which is incorporated by reference herein. BACKGROUND OF THE INVENTION Field of the Invention The disclosure generally relates to a mobile device, and more particularly, to a mobile device supporting wideband operations. 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. Antennas are indispensable elements for wireless communication. If an antenna for signal reception and transmission has too narrow operational bandwidth, it may degrade the communication quality of the relative mobile device. Accordingly, it has become a critical challenge for designers to design a small-size, wideband antenna structure. BRIEF SUMMARY OF THE INVENTION In an exemplary embodiment, the invention is directed to a mobile device supporting wideband operations. The mobile device includes a feeding radiation element, a first radiation element, a shorting radiation element, a second radiation element, a third radiation element, and a fourth radiation element. The feeding radiation element has a feeding point. The first radiation element is adjacent to the feeding radiation element. The first radiation element is coupled through the shorting radiation element to a ground voltage. The second radiation element is coupled to the shorting radiation element. The third radiation element is coupled to the first radiation element. The third radiation element is adjacent to the feeding radiation element. The fourth radiation element is coupled to the ground voltage. The fourth radiation element is adjacent to the feeding radiation element. An antenna structure is formed by the feeding radiation element, the first radiation element, the shorting radiation element, the second radiation element, the third radiation element, and the fourth radiation element. In some embodiments, the feeding radiation element includes a first portion and a second portion, and an obtuse angle is formed between the first portion and the second portion. In some embodiments, the first radiation element further includes a trapezoidal widening portion. In some embodiments, a first coupling gap is formed between the second portion of the feeding radiation element and the trapezoidal widening portion of the first radiation element. A second coupling gap is formed between the first portion of the feeding radiation element and the third radiation element. The width of each of the first coupling gap and the second coupling gap is from 0.5 mm to 1.5 mm. In some embodiments, a third coupling gap is formed between the second portion of the feeding radiation element and the fourth radiation element. The width of the third coupling gap is from 0.5 mm to 1 mm. In some embodiments, the antenna structure covers a first frequency band, a second frequency band, and a third frequency band. The first frequency band is from 2400 MHz to 2500 MHz. The second frequency band is from 5150 MHz to 5850 MHz. The third frequency band is from 5925 MHz to 7125 MHz. In some embodiments, the total length of the first radiation element and the shorting radiation element is substantially equal to 0.25 wavelength of the first frequency band. In some embodiments, the total length of the first radiation element, the shorting radiation element and the second radiation element is substantially equal to 0.5 wavelength of the second frequency band. In some embodiments, the length of the feeding radiation element is substantially equal to 0.5 wavelength of the third frequency band. In some embodiments, the length of the fourth radiation element is substantially equal to 0.25 wavelength of the third 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 top view of a mobile device according to an embodiment of the invention; FIG. 2 is a diagram of return loss of an antenna structure of a mobile device according to an embodiment of the invention; FIG. 3 is a diagram of radiation gain of an antenna structure of a mobile device according to an embodiment of the invention; and FIG. 4 is a perspectiv