RF Power Controller Circuit Formed by Monolithic RF Power Measurement System AD8318

Published:2011/5/10 2:22:00 Author:Sharon | Keyword: RF Power Controller, Monolithic, RF Power Measurement | From:SeekIC

The working principle of the RF power controller is as shown. The control object can be a power amplifier(PA), variable gain amplifier (VGA), variable voltage attenuator (VVA) and so on. When selecting control mode, one should cut USET and UOUT pin from each other. The measured RF power signal is added to the AD8318's input through the directional coupler and attenuator. AD8318's set voltage comes from the D / A converter (DAC). The gain control voltage output from the AD8318's UOUT is used to control the output power of VGA (or VVA).



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Measuring_and_Test_Circuit/RF_Power_Controller_Circuit_Formed_by_Monolithic_RF_Power_Measurement_System_AD8318.html

Print this Page | Comments | Reading(3)