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High Linearity and Efficiency Microwave PAs
GA043205.pdf
(Paolo Colantonio
Josè Angel Garcia
Franco Giannini
Ernesto Limiti
Emigdio Malaver
Josè Carlos Pedro
An overview on linearity and efficiency performance optimisation in power amplifier (PA) is presented, stressing the required trade-off demanded to PA designers. For efficiency improvement, the harmonic tuning strategies are discussed, with their advantages and major drawbacks. For linearity improvement, the IMD sweet spot optimisation strategies is presented as a solution to obtain low intermodulation near PA saturated condition, resulting in efficiency enhancement with respect to back-off approaches.
October 2004
