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As wireless cellular communication keeps expanding toward higher bandwidth, multiband signals, and high frequencies of operation, the design of power efficient radio frequency power amplifiers (PAs) for cellular phone basestations is submitted to more stringent requirements. This paper discusses the promising technique of nonlinear embedding, which may help stream line the design of such PAs. To this...
A testbed is reported for the measurement of the instantaneous power dissipation of a dual input Chireix power amplifier (PA) driven by an LTE signal. An FPGA system is used to dynamically control the phase difference and respective incident power level of the two signals injected at the dual-inputs of the Chireix PA under test. The dynamic drain currents of the power amplifier are measured using...
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