Antenna for use in mobile terminal

• US 10,141,634 B2
• Filed: 01/17/2017
• Issued: 11/27/2018
• Est. Priority Date: 01/29/2016
• Status: Active Grant

• Current Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Original Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Inventors: Xue, Zonglin, Wang, Linchuan, Xiong, Xiaofeng
• Primary Examiner(s): Baltzell, Andrea Lindgren
• Application Number:
  US15/407,346
• Publication Number:
  US 20170222304A1
• Time in Patent Office: 679 Days
• Field of Search: 343702
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome
• CPC Class Codes: H01Q 5/385 Two or more parasitic elements

Abstract

An antenna for use in a mobile terminal includes a first radiation unit including a feed portion for inputting energy, the feed portion being provided at one end of the first radiation unit, and at least one coupling branch. The first radiation unit and the at least one coupling branch form a coupled feeding structure between each other. A first end portion of the at least one coupling branch is connected to a metal frame of the mobile terminal. The at least one coupling branch is disposed around the first radiation unit. The at least one coupling branch and the first radiation unit are not in contact with each other. The at least one coupling branch has an opening.

Claims

1. An antenna for use in a mobile terminal, comprising:

a first radiation unit including a feed portion for inputting energy, the feed portion being provided at one end of the first radiation unit; and

two coupling branches, wherein;

the first radiation unit and the two coupling branches form a coupled feeding structure;

one end of a first one of the two coupling branches and one end of a second one of the two coupling branches are respectively connected to two end portions of a first segment of a metal frame of the mobile terminal, the two coupling branches are disposed around the first radiation unit, the two coupling branches and the first radiation unit are not in contact with each other, and the two coupling branches define an opening; and

first and second slits are respectively provided at two ends of the first segment of the metal frame to separate the first segment from other segments of the metal frame.

2. The antenna according to claim 1, wherein a second end portion of the first radiation unit is provided with a ground point.

3. The antenna according to claim 1, wherein the first segment of the metal frame is provided on a first side of the metal frame, and the first side is a narrow side of four sides of the metal frame.

4. The antenna according to claim 1, wherein the first radiation unit and the two coupling branches are provided in a clear region of a printed circuit board of the mobile terminal.