DESIGN, OPTIMIZATION AND ANALYSIS OF HIGH POWER AMPLIFIER IN THE KA BAND

The graphical technique for nonlinear circuits was described that enable us to optimize circuits to obtain maximum output power, maximum efficiency or minimum intermodulation. According to this method a high power amplifier in the Ka band was designed. Using a nonlinear model of the transistor, optimum slope for load-line was determined so that maximum power at the output was obtainable, then the output matching circuit was synthesized. Finally, the nonlinear network of the high power amplifier was analyzed by the harmonic balance method and the output load cycles were optimized by modification of the bias point or output matching network.

کلیدواژه ها:

PHEMT ، PHEMT ، nonlinear model ، graphical optimization ، load cycle ، Harmonic Balance ، High Power Amplifier ، مدل غیر خطی ، بهینه سازی گرافیکی ، سیکل بار ، توازن هارمونیکی ، تقویت کننده توان