a mobile terminal

Abstract

The invention discloses a mobile terminal comprising a metal frame and an antenna. The metal frame is an enclosed frame having no break point, and is electrically connected to a reference ground. The antenna is located in the metal frame, and comprises a signal feed arm, a resonance adjustment arm and a grounding arm. The signal feed arm has one end connected to a signal feed node, and another end connected to the metal frame. The resonance adjustment arm is connected to the metal frame. The grounding arm has one end connected to the metal frame, and another end connected to a ground node electrically connected to the reference ground. Since the metal frame is electrically connected to the reference ground, the metal frame forms a part of the reference ground and serves as a main radiation portion of the antenna. The resonance adjustment arm is adopted to adjust a resonance frequency of a wireless network antenna, and adjust a resonance frequency of a positioning antenna by adjusting a position of the ground node where the grounding arm is connected to, thereby covering a corresponding frequency band, and meeting a performance requirement of the two-in-one positioning antenna and the wireless network antenna. The embodiment can considerably increase a structural strength of the mobile terminal by employing the radiation approach to eliminate any break point on the enclosed metal frame.

Description

technical field [0001] The present invention relates to electronic equipment, in particular to a mobile terminal. Background technique [0002] With the continuous improvement of users' requirements for the appearance of mobile terminals, more and more mobile terminals with metal appearance appear on the market. However, the metal middle frames of most mobile terminals have plastic partition points, which affect the structural strength. The metal middle frame of the terminal is a closed loop without breakpoints. The existing published mobile terminals with middle frames without breakpoints are usually loop or slot antennas. Although they meet the requirement of no breakpoints in metal middle frames, they only use the simple implementation of slot antennas, that is, in the metal There are slots around the middle frame. This realization is mainly limited by its relatively complex feed structure design and the inflexible adjustment of the antenna resonance frequency (changing ...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of users' requirements for the appearance of mobile terminals, more and more mobile terminals with metal appearance appear on the market. However, the metal middle frames of most mobile terminals have plastic partition points, which affect the structural strength. The metal middle frame of the terminal is a closed loop without breakpoints

The existing published mobile terminals with middle frames without breakpoints are usually loop or slot antennas. Although they meet the requirement of no breakpoints in metal middle frames, they only use the simple implementation of slot antennas, that is, in the metal There are slots around the middle frame. This realization is mainly limited by its relatively complex feed structure design and the inflexible adjustment of the antenna resonance frequency (changing the size of the slot), and the radiation performance of this slot antenna is relatively weak. In addition, the middle frame The design of the gaps in the circumference will also have a more obvious weakening effect on the structural strength of the whole machine

[0003] The antenna design in the prior art cannot effectively support the positioning system of the future mobile terminal and the high-performance requirements of the wireless network antenna, as well as the requirements for easy design and implementation. How to flexibly implement the antenna in the mobile terminal with a closed-loop metal middle frame without breakpoints Designing and tuning to meet the requirements of future mobile terminals for appearance and antenna performance is the problem to be solved by the present invention

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