Antenna system and its mobile terminal

Abstract

The invention discloses an antenna system; a metal frame of the mobile terminal comprises at least two grooves; the grooves are positioned on the left side and the right side of the mobile terminal; a grounding position is arranged above each of the grooves; the grounding position is electrically connected to a system grounding surface of the mobile terminal through a contact point; and the distance between the grounding position and the upper rim of the groove is smaller or equal to the half of a total wavelength of a radiator. Compared with the prior art, the invention provides the antenna design mode combining with the mobile terminal metal frame and the appearance. The right side and the left side of the mobile terminal are provided with at least two grooves and the position in proximity to the groove is connected to the grounding surface of the system through a contact point. In the human-head-hand model and real user environment, the antenna design can dramatically reduce the attenuation of the antenna performance so as to reduce the call drop rate without adding a switching chip, reduces the cost, and reduces the difficulty of the antenna design. The invention also discloses a mobile terminal.

Description

technical field [0001] The present invention relates to the technical field of mobile terminal antenna design, and more particularly relates to an antenna system and a mobile terminal thereof. Background technique [0002] In recent years, with the wide application of mobile terminals such as smart phones and the continuous improvement of people's needs, people pay more and more attention to whether the appearance of mobile terminals is exquisite. In view of this, metal materials are used in the antenna design of mobile terminals, such as the metal frame antenna design of iphone4. [0003] For the needs of antenna design, slots are generally made on the left and right sides of the metal frame. But in use, the slot will be directly touched by the user, which will affect the performance of the antenna and even make it impossible to communicate. To solve this problem, there are currently two solutions: (1) move the slotting position up to the top of the mobile terminal or dow...

AI Technical Summary

Problems solved by technology

However, in a real user environment, no matter whether the slot is moved to the top or bottom, human fingers may still touch the slot, which will greatly affect the performance of the antenna.

For the second solution, there are the following problems: (1) the use of switching chips increases the cost; (2) the switching of the radio frequency path will have a time difference, and when the user is moving fast or in a place with poor signal, Still prone to call drop; (3) Designing two antennas that support the same frequency band will inevitably increase the design difficulty, and the performance of the second antenna is usually not comparable to that of the first antenna

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