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US-20260128517-A1 - ANTENNA STRUCTURE

US20260128517A1US 20260128517 A1US20260128517 A1US 20260128517A1US-20260128517-A1

Abstract

An antenna structure includes a ground element, a feeding radiation element, a connection radiation element, a conductive via element, a first radiation element, a second radiation element, a third radiation element, and a nonconductive support element. The feeding radiation element is coupled through the connection radiation element to the ground element. The conductive via element is coupled to the feeding radiation element. The first radiation element, the second radiation element, and the third radiation element are coupled to the conductive via element. A slot is formed between the first radiation element and the second radiation element. The nonconductive support element has a first surface and a second surface which are opposite to each other. The conductive via element penetrates the nonconductive support element. The ground element, the feeding radiation element, and the connection radiation element are disposed on the first surface of the nonconductive support element.

Inventors

  • Yi-Ling Tseng
  • Chin-Lung Tsai
  • Chung-Ting Hung
  • Kai-Hsiang Chang
  • Yu-Chen ZHAO
  • Chun-I Cheng

Assignees

  • QUANTA COMPUTER INC.

Dates

Publication Date
20260507
Application Date
20241213
Priority Date
20241105

Claims (10)

  1. 1 . An antenna structure, comprising: a ground element; a feeding radiation element, having a feeding point; a connection radiation element, wherein the feeding radiation element is coupled through the connection radiation element to the ground element; a conductive via element, coupled to the feeding radiation element; a first radiation element, coupled to the conductive via element; a second radiation element, coupled to the conductive via element, wherein a slot is formed between the first radiation element and the second radiation element; a third radiation element, coupled to the conductive via element; and a nonconductive support element, having a first surface and a second surface opposite to each other, wherein the conductive via element penetrates the nonconductive support element; wherein the ground element, the feeding radiation element, and the connection radiation element are disposed on the first surface of the nonconductive support element; wherein the first radiation element, the second radiation element, and the third radiation element are disposed on the second surface of the nonconductive support element.
  2. 2 . The antenna structure as claimed in claim 1 , wherein the connection radiation element substantially has an L-shape.
  3. 3 . The antenna structure as claimed in claim 1 , wherein the connection radiation element has a vertical projection on the second surface of the nonconductive support element, and the vertical projection at least partially overlaps the first radiation element.
  4. 4 . The antenna structure as claimed in claim 1 , wherein the conductive via element substantially has a conical shape.
  5. 5 . The antenna structure as claimed in claim 1 , wherein the second radiation element further comprises a protruding portion, and the protruding portion substantially has a rectangular shape.
  6. 6 . The antenna structure as claimed in claim 1 , wherein the slot is a monopole slot with a closed end and an open end.
  7. 7 . The antenna structure as claimed in claim 1 , wherein 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, and the third frequency band is from 5925 MHz to 7125 MHz.
  8. 8 . The antenna structure as claimed in claim 7 , wherein a total length of the feeding radiation element and the first radiation element is substantially equal to 0.25 wavelength of the first frequency band.
  9. 9 . The antenna structure as claimed in claim 7 , wherein a total length of the feeding radiation element and the second radiation element is substantially equal to 0.25 wavelength of the second frequency band.
  10. 10 . The antenna structure as claimed in claim 7 , wherein a total length of the feeding radiation element and the third 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. 113211995 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 an antenna structure, and more particularly, to a wideband antenna structure. 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 an insufficient 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 an antenna structure that includes a ground element, a feeding radiation element, a connection radiation element, a conductive via element, a first radiation element, a second radiation element, a third radiation element, and a nonconductive support element. The feeding radiation element has a feeding point. The feeding radiation element is coupled through the connection radiation element to the ground element. The conductive via element is coupled to the feeding radiation element. The first radiation element is coupled to the conductive via element. The second radiation element is coupled to the conductive via element. A slot is formed between the first radiation element and the second radiation element. The third radiation element is coupled to the conductive via element. The nonconductive support element has a first surface and a second surface which are opposite to each other. The conductive via element penetrates the nonconductive support element. The ground element, the feeding radiation element, and the connection radiation element are disposed on the first surface of the nonconductive support element. The first radiation element, the second radiation element, and the third radiation element are disposed on the second surface of the nonconductive support element. In some embodiments, the connection radiation element substantially has an L-shape. In some embodiments, the connection radiation element has a vertical projection on the second surface of the nonconductive support element, and the vertical projection at least partially overlaps the first radiation element. In some embodiments, the conductive via element substantially has a conical shape. In some embodiments, the second radiation element further includes a protruding portion, and the protruding portion substantially has a rectangular shape. In some embodiments, the slot is a monopole slot with a closed end and an open end. 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 feeding radiation element and the first radiation element is substantially equal to 0.25 wavelength of the first frequency band. In some embodiments, the total length of the feeding radiation element and the second radiation element is substantially equal to 0.25 wavelength of the second frequency band. In some embodiments, the total length of the feeding radiation element and the third 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 back view of an antenna structure according to an embodiment of the invention; FIG. 2 is a front view of the antenna structure according to an embodiment of the invention; FIG. 3 is a side view of the antenna structure according to an embodiment of the invention; and FIG. 4 is a diagram of VSWR (Voltage Standing Wave Ratio) of an antenna structure according to an embodiment of the invention. DETAILED DESCRIPTION OF THE INVENTION In order to illustrate the purposes, features and advantages