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Conference Paper Low Power Consumptive Mixed Mode MMIC Power Amplifier Module for WCDMA Handset Applications
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Authors
Min Park, Yun Ho Choi, Tae Young Kang, Kyung Hwan Park, Seong Su Park, Seok-Bong Hyun
Issue Date
2007-10
Citation
European Micorwave Integrated Circuits Conference (EuMIC) 2007, pp.489-492
Language
English
Type
Conference Paper
DOI
https://dx.doi.org/10.1109/EMICC.2007.4412756
Project Code
07MB1800, Integrated Development of Ultra Low Power RF/HW/SW SoC, Seok Bong Hyun
Abstract
A high average-efficient MMIC power amplifier is implemented utilizing mixed mode power stage techniques with proper linearity. The average power efficiency, which is more important fact to save the battery in handsets, is improved about three times than commercial PAs with only supply voltage of 3.0-V. The power amplifier has been optimized for different P1dB (1-dB compression point) value: one for 16 dBm for the low power mode, targeting the most probable transmission power, and the other for 28 dBm for the high power mode. A PAE of 29.0% at 16 dBm of out power, which is the maximum bound of the most probable transmission power in IS-95 systems, was obtained, as well as 46.7% at 28.2dBm for the high power mode. The measured adjacent channel leakage power ratios (ACLR) at the high and low power mode of P1dB are -36.17 and -36.16dBc, respectively, and satisfy the Third-Generation Partnership Project (3GPP) WCDMA specification. © 2007 EuMA.
KSP Keywords
1-dB compression point, Adjacent channel, As 4, Average Power, High power, Leakage power, Low power mode, MMIC power amplifier, Power Efficiency, Power stage, Supply voltage