Title :
Adaptively linearised MMIC power amplifier for W-CDMA applications
Author :
Noh, Y.S. ; Yom, I.B. ; Park, J.H. ; Park, C.S.
Author_Institution :
Digital Broadcasting Res. Div., Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Abstract :
A high-linearity and high-efficiency MMIC power amplifier is proposed that adopts a new on-chip adaptive bias circuit, which simultaneously improves efficiency at the low output power level and linearity at the high output power level. The intelligent W-CDMA power amplifier using the adaptive bias circuit extends the maximum linear output power of 0.6 dB and exhibits an improvement of average power usage efficiency of 1.85 times.
Keywords :
MMIC power amplifiers; code division multiple access; CDMA applications; adaptively linearised MMIC power amplifier; on chip adaptive bias circuit; power usage efficiency;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20046323
