Multi-band antenna based on mobile phone metal frame

Abstract

The invention discloses a multi-band antenna based on a mobile phone metal frame, and relates to the field of mobile phone antennas. The multi-band antenna comprises a front mobile phone shell and a back mobile phone cover arranged on the front mobile phone shell. The back mobile phone cover comprises a metal battery cover, an insulating cover plate and a metal ring. One side of the metal battery cover is connected with one side of the insulating cover plate. The metal ring is defined by the other sides, not connected with the metal battery cover, of the insulating cover plate in a connected mode. One end of the metal ring is connected with the metal battery cover, and the other end of the metal ring is not connected with the metal battery cover. The metal ring is provided with a first grounding point connected with the metal battery cover through a metal sheet. The metal battery cover is provided with a feed piece provided with a feed point. The feed piece and the metal battery cover are insulated. A monopole is pasted to the insulating cover plate, and one end of the monopole is connected with the feed piece. According to the multi-band antenna, the communication performance of a mobile phone can be effectively improved, and the using quality of the mobile phone is improved.

Description

technical field [0001] The invention relates to the field of mobile phone antennas, in particular to a multi-band antenna based on a metal frame of a mobile phone. Background technique [0002] With the continuous advancement of mobile communication technology, people are more and more demanding on the appearance and quality of mobile phones. In order to meet people's increasingly high requirements for mobile phones, relevant technical personnel are constantly challenging the limits of communication technology. [0003] The mobile phone model with metal frame has good feel and exquisite appearance, and is more wear-resistant than the mobile phone with plastic shell. Therefore, the mobile phone model with metal frame is also more and more subject to people's favor. [0004] However, the current types of mobile phone antennas are mainly PIFA, IFA, and monopole antennas. If these types of antennas are surrounded by metal, electromagnetic waves cannot be effectively radiate...

AI Technical Summary

Problems solved by technology

In order to solve the problem of poor performance of such metal-cased mobile phones, the present invention proposes a multi-band antenna based on the metal frame of the mobile phone as described above, especially for mobile phone models with metal as the outer body and compact internal layout.

Images