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7850381 
Journal Article 
Design of a 50-W Power Amplifier With Two- Octave Bandwidth and High-Efficiency Using a Systematic Optimization Approach 
Ghazizadeh, M; Nayyeri, V 
2021 
Yes 
I E E E Microwave and Wireless Components Letters
ISSN: 1531-1309 
31 
5 
501-504 
WOS:000648333500021 
A wideband and highly efficient power amplifier (PA) is designed using a simple and systematic approach. This method employs an optimization process to set the input impedance of the matching networks in optimal regions on the Smith chart, obtained using conventional load-pull/source-pull simulations, in both the fundamental and second harmonics. The developed design method led to a GaN PA whose measurements showed an output power of 46.8-48.1 dBm and a drain efficiency of 57%-71% in a two-octave bandwidth from 0.8 to 3.2 GHz. 
Impedance; Harmonic analysis; Manganese; Frequency measurement; Wireless communication; Wideband; Transistors; Broadband matching network (MN); efficiency; harmonic-tunning; load-pull; wideband power amplifiers (PAs)