US Patent No. 9,439,151

METHOD FOR INTELLIGENTLY SWITCHING ON/OFF MOBILE TERMINAL ANTENNA AND CORRESPONDING MOBILE TERMINAL


Patent No. 9,439,151
Issue Date September 06, 2016
Title Method For Intelligently Switching On/off Mobile Terminal Antenna And Corresponding Mobile Terminal
Inventorship Dalong Zhu, Shenzhen (CN)
Yimu Hu, Shenzhen (CN)
Aiguo Yuan, Shenzhen (CN)
Jinlu Xu, Shenzhen (CN)
Assignee ZTE CORPORATION, Guangdong (CN)

Claim of US Patent No. 9,439,151

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.