Design of a Multi-Octave PA Using a Double Optimization Methodology

In this work, a double optimization algorithm is used to design a multi-octave power amplifier (PA). The initial PA is de-signed based on Chebyshev low-pass topology. The advanced de-sign system (ADS) embedded optimization technique is used to ob-tain a good starting point for Bayesian optimization (BO), and then BO method is carried out to further optimize the performance of the designed PA. Finally, a multi-octave PA with the output power of more than 40 dBm and power added efficiency (PAE) of better than 60% in the band of 0.7-3.1 GHz is obtained.