论文信息 - High efficiency CDMA power amplifier with dynamic current control circuits

High efficiency CDMA power amplifier with dynamic current control circuits

This work presents a PCS band linear power amplifier with high average efficiency using a dynamic quiescent current control circuit. A dynamic quiescent current control circuit, which enables the quiescent current to be gradually increased with control voltage increase, has been designed using InGaP/GaAs HBT technology. The 2-stage amplifier has been implemented to demonstrate the superior performance of the proposed control scheme compared to classical discrete mode control. With IS95B reverse-link signal, this amplifier shows about 2 times higher average efficiency than that of the discretely controlled amplifier.

Youngoo Yang

[1] Lawrence E. Larson,et al. An extended Doherty amplifier with high efficiency over a wide power range , 2001, IMS 2001.

[2] Peter M. Asbeck,et al. High-efficiency power amplifier using dynamic power-supply voltage for CDMA applications , 1999 .

[3] P. Asbeck,et al. An extended Doherty amplifier with high efficiency over a wide power range , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).