DYNAMIC REAL-TIME CALIBRATION FOR ANTENNA MATCHING IN A RADIO FREQUENCY TRANSMITTER SYSTEM
摘要
Real-time calibration of a tunable matching network that matches the dynamic impedance of an antenna in a radio frequency transmitter system. The radio frequency transmitter system includes two non-linear equations that may be solved to determine the reflection coefficient of the antenna. The tunable matching network is repeatedly perturbed and the power reflected by the antenna is measured after each perturbation at the same node within the tunable matching network. The power values are used by an optimizer in converging to a solution that provides input impedance of the antenna. The elements of the matching circuit are adjusted to match the input impedance of the antenna.
申请公布号
WO2011047141(A2)
申请公布日期
2011.04.21
申请号
WO2010US52651
申请日期
2010.10.14
申请人
RESEARCH IN MOTION LIMITED;ALI, SHIROOK;WARDEN, JAMES, PAUL;BAKER, MOHAMED