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Analysis and design of power-controllable CMOS class E RF-tuned power amplifiers

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1 Author(s)
Tu, S.H.-L. ; Dept. of Electr. Eng., Fu Jen Catholic Univ., Taipei, Taiwan

Conventional approaches for output-power control of class E-tuned power amplifiers are investigated, which reveals a common drawback of presently popular power-control mechanisms. A novel low-distortion, output-power-control prototype architecture based on high-Q compensated varactors is therefore presented in this study. The architecture also allows the employment of high-Q bond-wire inductors with inductance variations to ensure minimum power loss.

Published in:

Power Electronics, IET  (Volume:5 ,  Issue: 4 )