RF power control system composed of a monolithic true RMS power measurement system AD8362 circuit

Published:2011/6/9 4:56:00 Author:John | Keyword: RF power control system | From:SeekIC

RF power control system circuit constituted by the AD8362 is just as shown in the figure. At this moment, set point voltage USET is input on pin 11 with a voltage range from 0.5V to 3.5V. Controlled system is RF power amplifier (PA). Propose the input power of PA as PI and the output power as Po. Po changes according to the with the control voltage Uo added on console termianal of APC. Utilize the power feedback circuit to form a control loop, so that the output power of PA is equal to the setting. PIN is the feedback power and R is the feedback power’s sampling resistance.



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