Patent ID: 9439151
Filing Date: 2016-09-06
CPC Classification: H01Q,H04B,H04W,Y02D

Claim Text:
1. A mobile terminal intelligently switching on/off an antenna, comprising a detection unit, an antenna control unit, and an antenna radiation unit which comprises a main feed unit radiator and a parasitic unit radiator, wherein, the detection unit is configured to detect a current working frequency band of the mobile terminal and transmit a detection result to the antenna control unit; the antenna control unit is configured to receive the detection result transmitted by the detection unit and change an impedance characteristic of the parasitic unit radiator according to a preset correspondence between the antenna radiation unit and the current working frequency band; and the parasitic unit radiator is configured to change the impedance characteristic in accordance with the control of the antenna control unit; wherein, the antenna control unit is configured to change the impedance characteristic of the parasitic unit radiator according to the following way: transmitting an instruction to the parasitic unit radiator in the antenna radiation unit to switch on one or more parasitic units in the parasitic unit radiator and/or switch off one or more parasitic units in the parasitic unit radiator; and the parasitic unit radiator is configured to change the impedance characteristic in accordance with the control of the antenna control unit according to the following way: switching on one or more parasitic units in the parasitic unit radiator according to the instruction transmitted by the antenna control unit; wherein the parasitic units are neither grounded nor connected to the main feed unit radiator before being switched on, and are grounded but still not connected to the main feed unit radiator after being switched on.