METHOD AND SYSTEM FOR CONTROLLING THE GAIN OF AN AMPLIFIER BY CONTINUOUSLY ALTERNATING CLOSED AND OPEN LOOP POWER CONTROL

摘要

The invention includes a method and apparatus for continuously controlling a gain of the amplifier circuit for performing switching between open-loop and closed-loop power control. The control circuit controls the gain of the amplifier circuit during open-loop and closed-loop power control mode based on the selected reference. In open loop power control before the transition to closed-loop control circuit it is based on the measured power prior to switching on the amplifier output circuit and determines the closed-loop reference. After the switch, the control circuit controls the gain of the amplifier circuit based on the determined closed-loop reference. Before switching to open-loop power control in a closed loop, the control circuit generates a difference between a current open-loop repeoreonseugwa previous open-loop reference. After the switch, the control circuit on the basis of the open-loop gain control signal generated by applying the difference to the previous closed-loop gain control signal for controlling the gain of the amplifier circuit. ; Power control, open loop, closed loop, the gain control, the amplifier circuit