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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...
A fully model-based nonlinear embedding device model including low- and high-frequency dispersion effects is implemented for the Angelov device model and successfully demonstrated for load modulation power-amplifier (PA) applications. Using this nonlinear embedding device model, any desired PA mode of operation at the current source plane can be projected to the external reference planes to synthesize...
A large-signal measurement-based methodology to design oscillators using the Kurokawa theory is presented in this paper. Measurements of the negative input resistance and device line of a 2.5 GHz HEMT oscillator versus frequency and power, and its optimization using real-time active load-pull (RTALP) for the 2nd and 3rd harmonics are performed with a large signal network analyzer (LSNA). As a result,...
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