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This paper presents an octave-bandwidth load modulated balanced amplifier (LMBA) that operates directly on a single modulated RF input. The architecture is based on the recently proposed LMBA technique, in which a control signal applied at the output isolation port of a balanced amplifier is used to modulate the apparent load impedance of the two devices comprising the balanced amplifier. In our approach,...
This paper presents a new balanced architecture to improve the power added efficiency (PAE) of a 3G handset power amplifier without trading-off its stringent linearity requirement. It is modified from the structure of our switched load insensitive power amplifier (LIPA). Power amplifiers using this modified balanced structure retain the main features of the LIPA and provide boosted PAE performance...
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