Design of Linear RF Outphasing Power Amplifiers
Artech House, 2003 - Technology & Engineering - 200 pages
This is the first book devoted exclusively to the outphasing power amplifier, covering the most recent research results on important aspects in practical design and applications. A compilation of all the proposed outphasing approaches, this is an important resource for engineers designing base station and mobile handset amplifiers, engineering managers and program managers supervising power amplifier designs, and R&D personnel in industry. The work enables you to: design microwave power amplifiers with higher efficiency and improved linearity at a lower cost; understand linearity and performance tradeoffs in microwave power amplifiers; and understand the effect of new modulation techniques on microwave power amplifiers.
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algorithm amplifier branches amplifier output analog available power average power efficiency bandwidth baseband calibration CALLUM CCDF CDMA circuit Class Class D amplifier component signals constant envelope diode conduction angle ðtÞ eðtÞ feedback frequency function gain and phase gain imbalance hybrid IEEE Trans implementation impulse response input signal intermodulation LINC Transmitter linear loop lossless lowpass filter matching maximum recycling efficiency mismatch modulated signal nonlinear power amplifier OQPSK out-of-band outphasing amplifier outphasing power amplifier outphasing system output power output signal overall path imbalance phase error phase imbalance phase modulator phase shift power combiner power level predistortion probability density function QPSK quadrature errors quadrature modulator error quadrature signal quantization error raised cosine raised cosine filter reconstruction filter recycling network result roll-off factor sðtÞ shown in Figure signal component separation source signal spectral regrowth spectrum techniques transistor typically vðtÞ vector VSWR waveform wireless communications zero