Supply-terminal 40 MHz BW characterization of impedance-like nonlinear functions for envelope tracking PAs
GP Gibiino, J Couvidat, G Avolio… - 2016 87th ARFTG …, 2016 - ieeexplore.ieee.org
2016 87th ARFTG Microwave Measurement Conference (ARFTG), 2016•ieeexplore.ieee.org
We present an approach for the dynamic characterization of the non-idealities arising in
envelope tracking (ET) systems when either the radio-frequency (RF) power amplifier (PA)
or the supply modulator (SM) are driven into nonlinear operation. Impedance-like nonlinear
functions, derived through a modified Volterra formulation, are here introduced and
measured at the supply terminal over 40 MHz bandwidth (BW), allowing better predictions of
the dynamic voltage and current at the SM-PA interface.
envelope tracking (ET) systems when either the radio-frequency (RF) power amplifier (PA)
or the supply modulator (SM) are driven into nonlinear operation. Impedance-like nonlinear
functions, derived through a modified Volterra formulation, are here introduced and
measured at the supply terminal over 40 MHz bandwidth (BW), allowing better predictions of
the dynamic voltage and current at the SM-PA interface.
We present an approach for the dynamic characterization of the non-idealities arising in envelope tracking (ET) systems when either the radio-frequency (RF) power amplifier (PA) or the supply modulator (SM) are driven into nonlinear operation. Impedance-like nonlinear functions, derived through a modified Volterra formulation, are here introduced and measured at the supply terminal over 40 MHz bandwidth (BW), allowing better predictions of the dynamic voltage and current at the SM-PA interface.
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