Improving performances of low-voltage power amplifiers by second-harmonic manipulation

Colantonio, P. ; Giannini, Franco ; Leuzzi, Giorgio ; Limiti, Ernesto (1998) Improving performances of low-voltage power amplifiers by second-harmonic manipulation. In: Gallium Arsenide Applications Symposium. GAAS 1998, 5-6 October 1998, Amsterdam, The Netherlands.

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Abstract

The effect of second-harmonic loading on power amplifiers operated with a low-voltage supply is investigated. Closed-form expressions and design formulas are derived, making use of a simplified device model. The correctness of the assumptions and the range of validity of the derived expressions is then verified by means of a full non-linear analysis method and model: a sample low-voltage design for a power stage is performed, demonstrating the potentials of the method.

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