Title :
Power amplifier PAE and ruggedness optimization by second-harmonic control
Author :
Spirito, Marco ; De Vreede, Leo C N ; Nanver, Lis K. ; Weber, Stephan ; Burghartz, Joachim N.
Author_Institution :
Lab. of Electron. Components, Delft Univ. of Technol., Netherlands
Abstract :
Second-harmonic control is applied to optimize power-added efficiency (PAE) and ruggedness of silicon power amplifiers (PAs). A differential push-pull topology is chosen because it facilitates independent fundamental load and second-harmonic control. Various amplifiers using high-Q passives for fundamental and harmonic matching have been implemented. Experiments demonstrated an increase in PAE and ruggedness simultaneously even under high mismatch conditions. The amplifiers are operating in class-AB and are intended for use in the digital communication system (DCS) band.
Keywords :
S-parameters; UHF power amplifiers; circuit optimisation; circuit stability; differential amplifiers; digital communication; harmonics; microwave power amplifiers; mobile communication; network topology; class-AB operation amplifiers; differential output stages; differential push-pull topology; digital communication system band; fundamental load control; fundamental matching; harmonic matching; high mismatch conditions; high-Q passives; power amplifier PAE; power-added efficiency; ruggedness optimization; second-harmonic control; silicon power amplifiers; small-signal S-parameter characterization; Differential amplifiers; Digital communication; Distributed control; Operational amplifiers; Power amplifiers; Power generation; Robustness; Silicon; Topology; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2003.815918
