Supply-terminal 40 MHz BW characterization of impedance-like nonlinear functions for envelope tracking PAs
Supply-terminal 40 MHz BW characterization of impedance-like nonlinear functions for envelope tracking PAs
复制标题
用于包络跟踪 PA 的类阻抗非线性函数的电源终端 40 MHz 带宽表征
DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
A. Santarelli
中科院分区:
文献类型:
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作者:
G. P. Gibiino;Julien Couvidat;G. Avolio;D. Schreurs;A. Santarelli
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.