Double-feed antenna based on metal frame

Abstract

The invention discloses a double-feed antenna based on a metal frame. The antenna comprises a metal frame, a first antenna excitation and a second antenna excitation. A grounding plate used for grounding is arranged on the metal frame, the metal frame is divided into a first frame and a second frame by the grounding plate, the first antenna excitation and the second antenna excitation are located in the first frame and the second frame respectively, the first antenna excitation is coupled with the first frame to form an antenna radiation loop to further form a first antenna. The second antenna excitation is coupled with the second frame to form an antenna radiation loop to further form the second antenna. The antennas of two types are placed in a mobile terminal, the mobile phone space is fully utilized, and the rigor requirement of the smart mobile terminal for antenna space is met.

Description

technical field [0001] The invention relates to the field of antenna design for mobile terminals, in particular to a dual-feed antenna based on a metal frame, especially a metal frame based on a mobile phone. Background technique [0002] At present, mobile smart terminal products such as mobile phones, pads, and notebooks are increasingly pursuing metal textures, often using metal frames and metal back shells, which pose a challenge to antenna design. At the same time, because the thinness of mobile phones has become a major selling point of smart phones, the space for antennas is getting smaller and smaller, and the environment around the antennas is becoming more and more complicated. With the development of LTE (Long Term Evolution, Long Term Evolution) technology, a A mobile phone often needs to place multiple antennas. In the limited space and complex environment, it is necessary to make full use of the metal structure of the mobile phone itself to achieve broadband a...

AI Technical Summary

Problems solved by technology

At present, smart phones often have limited antenna space, and the same mobile phone often includes 2, 3, or even 4 antennas. At the same time, in order to ensure isolation, a certain distance must be kept between the antennas, so the design space of the antenna is stretched.

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