Title :
Dynamic bias circuit of CMOS power amplifier sensing dissipated signals
Author :
Oh, Inn Yeal ; Bang, J.H. ; Park, C.S.
Author_Institution :
Intellectual RF Eng. Center, Korea Adv. Inst. of Sci. & Technol., Daejeon
Abstract :
A dynamic bias technology is proposed to meet the linearity standards at high-power levels and simultaneously reduce power consumption at low-power levels for mobile WiMAX terminal application. The dynamic bias circuit makes the bias operate the power amplifier (PA) dynamically as the output power level is increased. The fabricated PA complies with the spurious emission of WiMAX standards up to 20 dBm with improvement in average power usage efficiency by a factor of 5.21 over a fixed bias PA.
Keywords :
CMOS integrated circuits; MIMIC; integrated circuit design; millimetre wave power amplifiers; power integrated circuits; CMOS power amplifier; MIMIC CMOS PA; WiMAX standards; average power usage efficiency; dissipated signal sensing; dynamic bias circuit technology; linearity standard; mobile WiMAX terminal application;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.1135
