Multi-frequency-band rear metal cover mobile phone antenna

Abstract

The invention aims at disclosing a multi-frequency-band rear metal cover mobile phone antenna which comprises a mobile phone rear metal cover, a printed circuit board and an antenna bracket, wherein the antenna bracket is positioned between the mobile phone rear metal cover and the printed circuit board; the mobile phone rear metal cover comprises a first rear metal cover and a second rear metal cover which are positioned on a same plane; a narrow gap is formed between the first rear metal cover and the second rear metal cover; the first rear metal cover is connected with an antenna part of the antenna bracket; the second rear metal cover is connected with a ground phase of the printed circuit board; a radio-frequency line of the printed circuit board is connected with the first rear metal cover; and the first rear metal cover and the ground phase of the printed circuit board are mutually connected. Compared with the prior art, the multi-frequency-band rear metal cover mobile phone antenna disclosed by the invention has the advantages that the antenna can effectively radiate or receive an electromagnetic signal in a way that the first rear metal cover of the rear metal cover is taken as a high-frequency or low-frequency radiating body of the antenna and other parts are arranged on the antenna bracket, thereby overcoming the defects of the prior art and realizing the purpose.

Description

technical field [0001] The invention relates to a mobile phone antenna, in particular to a multi-band metal back cover mobile phone antenna. Background technique [0002] With the rapid development of mobile communications, the forms of mobile phones are becoming more and more diverse, and the mobile phone with a metal back cover is more beautiful in appearance and feels better. From a structural point of view, compared with plastic materials such as PC and ABS, metal back covers The back cover is also more wear-resistant. [0003] However, the main forms of mobile phone antennas are PIFA, IFA, monopole antennas, and loop antennas. These antennas are not suitable for mobile phones with metal back covers, because the above antenna forms cannot effectively radiate or Receive electromagnetic signals. [0004] At present, in order to solve the above problems, it is basically by making changes on the metal surface shell, such as cutting a breakpoint on the metal ring, the paten...

AI Technical Summary

Problems solved by technology

[0005] However, the technologies adopted in the above-mentioned patents have some disadvantages, such as the metal cover must be disconnected a little, or slit, the antenna is inconvenient to adjust, and the impact of the hand is large, etc.

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