Mobile terminal and mobile terminal antenna production method

Patent metadata

Field	Value
Publication number	US-11450946-B2
Application number	US-201916954591-A
Country	US
Kind code	B2
Filing date	Jul 30, 2019
Priority date	Jul 31, 2018
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A mobile terminal and a mobile terminal antenna production method. The mobile terminal uses an insulation film layer on an insulation rear housing as a carrier of a radiating element of an antenna, and the radiating element is located within the entire mobile terminal, thereby effectively increasing a height of the radiating element of the antenna relative to a circuit board with the antenna not affecting an appearance of the mobile terminal. Compared with a conventional support solution, this manner can increase a height of about 0.2 mm to 0.6 mm. This reduces an impact caused by a metal component on the circuit board on antenna radiation, and further increases a bandwidth and efficiency of the antenna so that the antenna can cover a frequency band used in a handheld communications system.

First claim

What is claimed is:

1. A mobile terminal, comprising:
a mobile terminal body comprising a circuit board that is disposed in the mobile terminal body, a support disposed on the circuit board, and the support is insulated;
an insulation rear housing that covers the mobile terminal body, the insulation rear housing comprising an inner side of the insulation rear housing that is a surface facing the mobile terminal body, wherein an insulation film layer covers an inner side of the insulation rear housing; and
an antenna, comprising:
a first radiating element disposed on the insulation film layer;
a first electric-conductor, wherein there is a gap between the first electric-conductor and the first radiating element, the first electric-conductor indirectly couples the first radiating element in a capacitively coupled manner;
a second radiating element disposed on the insulation film layer;
a second electric-conductor, wherein there is a gap between the second electric-conductor and the second radiating element, and the second electric-conductor indirectly couples the second radiating element in a capacitively coupled manner, and wherein at least one of the first electric-conductor and the second electric-conductor is disposed on the support; and
a first feed and a second feed disposed on the circuit board;
wherein the first electric-conductor is electrically connected to the first feed and the second electric-conductor is electrically connected to the second feed.

2. The mobile terminal according to claim 1 , wherein the insulation rear housing is a glass rear housing.

3. The mobile terminal according to claim 1 , wherein the first radiating element comprises silver, aluminum, or copper and the second radiating element comprises silver, aluminum, or copper.

4. The mobile terminal according to claim 1 , wherein a thickness of the first radiating element is between 1 μm and 200 μm and a thickness of the second radiating element is between 1 μm and 200 μm.

5. The mobile terminal according to claim 4 , wherein an impedance of the first radiating element is less than 3 ohms and an impedance of the second radiating element is less than 3 ohms.

6. The mobile terminal according to claim 1 , wherein a square resistance of the first radiating element is less than 1 ohm/□ and a square resistance of the second radiating element is less than 1 ohm/□.

7. The mobile terminal according to claim 1 , wherein the insulation rear housing comprises a flat plate and a bent side wall, and an arc-shaped transition is used at a joint between the bent side wall and the flat plate.

8. The mobile terminal according to claim 7 , wherein both the first radiating element and the second radiating element are disposed on the flat plate of the insulation rear housing.

9. The mobile terminal according to claim 7 , wherein both the first radiating element and the second radiating element are disposed with a certain distance from the edge of the insulation film layer.

10. The mobile terminal according to claim 7 , wherein the first radiating element is disposed on the bent side wall of the insulation rear housing.

11. The mobile terminal according to claim 7 , wherein the second radiating element is disposed on the bent side wall of the insulation rear housing.

Assignees

• Huawei Tech Co Ltd

Inventors

• Yang Yu Chan
• Lee Chien-Ming
• Wang Hanyang
• Yu Dong
• Liao Yi-Hsiang
• Yang Xiaoli
• You Jiaqing

Classifications

• H01Q1/50

  Structural association of antennas with earthing switches, lead-in devices or lightning protectors · CPC title

• H04M1/0202

  Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets (constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03) · CPC title

• H04M1/026 Primary

  Details of the structure or mounting of specific components · CPC title

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H01Q1/38

  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 title