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A novel bias circuit and MMIC power amplifier implementation for W-CDMA mobile handsets
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- Authors
- Youn S. Noh, Jong H. Park, C. S. Park
- Issue Date
- 2004-09
- Citation
- Radio and Wireless Conference (RAWCON) 2004, pp.359-362
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- A novel bias circuit providing a stable quiescent current for temperature and regulated voltage variations is proposed and implemented for a W-CDMA MMIC power amplifier. The power amplifier with the proposed bias circuit has a quiescent current variation of only 6% for the -30/spl deg/C to 90/spl deg/C temperature range, and 8.5% for the 2.9V to 3.1V regulated voltage range, and the variation of the power gain at the 28dBm output power is less than /spl plusmn/0.8 (0.05) dB for /spl plusmn/0.1V of regulated voltage (/spl plusmn/60/spl deg/C of temperature) variation.
- KSP Keywords
- Current variation, MMIC power amplifier, Output power, Power gain, Temperature range, bias circuit, mobile handset, power amplifiers(PAs), quiescent current, voltage range, voltage variations