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Application Notes

AN-1375 Linear-In-dB RF Power Detector In W-CDMA User Equipment (Rev. A)

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Since most of the deployed W-CDMA networks use FDD mode only and the W-CDMA FDD has fast closed-loop power control in both uplink and downlink, hardware implementation for RF power detection in downlink from user equipment to base station is needed in order to meet the required air interface standard. This application report suggests application subsystem circuits for use in closed-loop power control in a handset or other user equipment.