Antenna system and mobile terminal

Abstract

The invention relates to the technical field of communication, in particular to an antenna system and a mobile terminal. The antenna system comprises a metal shell, and a circuit board and an antenna unit which are positioned inside the metal shell, wherein a system ground, a radio frequency feed source and a feed point electrically connected with the radio frequency feed source are arranged on the circuit board; the metal shell comprises a top shell provided with a radiating part, a middle shell connected with the system ground and a metal connecting rib for connecting the radiating part and the middle shell, a gap belt is arranged between the radiating part and the middle shell, and the radiating part is electrically connected with the feed point so as to form a three-in-one antenna; the antenna unit and the radiating part are arranged at an interval and are electrically connected with the system ground and the feed point respectively; the antenna unit is coupled with the radiating part so as to form a WIFI 5G reinforced antenna; and the electrical length of the WIFI 5G reinforced antenna is one half of the working frequency band wavelength of the WIFI 5G reinforced antenna. The radiation performance of the antenna system is improved, and the antenna resonance is adjusted by adjusting the antenna unit, so that the adjustability of the antenna system is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to an antenna system and a mobile terminal. Background technique [0002] At present, when designing antennas for mobile terminals such as mobile phones with metal shells, two methods are usually used to radiate the antenna. The first way is to connect the feed point on the circuit board to the top shell of the metal shell. Antenna radiation, but in this way, because the positions of the feed point and the top case are relatively fixed, it is difficult to debug the antenna; the second method: use the feed point and antenna unit on the circuit board (for example: flexible circuit board) The antenna radiation is carried out in the way of connection, and the antenna resonance is adjusted by adjusting the antenna unit, but this method is easily shielded by the metal shell, which can lead to a decrease in the antenna radiation efficiency. Contents of the invention [000...

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Problems solved by technology

[0002] At present, when designing antennas for mobile terminals such as mobile phones with metal shells, two methods are usually used to radiate the antenna. The first way is to connect the feed point on the circuit board to the top shell of the metal shell Antenna radiation, but in this way, because the position of the feed point and the top case is relatively fixed, it is difficult to

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