RF power control system composed of the AD8362

Published:2011/7/6 21:24:00 Author:Christina | Keyword: RF, power control system | From:SeekIC

The RF power control system which is composed of the AD8362 is as shown in the figure, the pin-11 is connected with the set-point voltage USET, the voltage range is 0.5～3.5V. The controlled system is RF power amplifier (PA). You can set the input power of PA is PI, the output power is Po, the Po changes with the control voltage Vo that is added on the control port APC. You can form the control loop by using the power feedback circuit to make the output power of PA the same with the set value. PIN is the feedback power, R is the sampling resistance of the feedback power.



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