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- W2123510495 abstract "In this paper, we demonstrate a single-stage 90-nm CMOS power amplifier (PA) for 2.3-2.7-GHz WiMAX (802.16e) band applications. An integrated balun is used to match the output to 50-¿ load. The PA gain and saturated power ( <i xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>P</i> <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>SAT</sub> ) are +18 and +32 dBm, respectively, working from a 3.3-V supply, with a peak power-added efficiency of 48%. A digital-predistortion technique is used to enhance the PA linearity. The measured error vector magnitude for a 64 quadrature amplitude modulation orthogonal frequency-division multiplexing signal is improved from -24 to -30 dB at +25-dBm output power. Compliance with the 802.16e standard 10-MHz WiMAX mask and Federal Communications Commission regulations is demonstrated at + 25 dBm of output power with power efficiency of ~ 25% and with a measured second harmonic level of - 31 dBm/MHz. Using a crest factor reduction technique, mask compliance is achieved at + 27 dBm with tradeoff on EVM = -20 dB, sufficient for quadrature phase-shift keying." @default.
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- W2123510495 date "2010-05-01" @default.
- W2123510495 modified "2023-10-18" @default.
- W2123510495 title "A 90-nm CMOS Power Amplifier for 802.16e (WiMAX) Applications" @default.
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- W2123510495 doi "https://doi.org/10.1109/tmtt.2010.2042906" @default.
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