Power amplifier PAE and ruggedness optimization by second-harmonic control

Marco Spirito*, Leo C.N. De Vreede, Lis K. Nanver, Stephan Weber, Joachim N. Burghartz

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)


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 ruggednes 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.

Original languageEnglish
Pages (from-to)1575-1583
Number of pages9
JournalIEEE journal of solid-state circuits
Issue number9
Publication statusPublished - 1 Sep 2003
Externally publishedYes


  • Differential output stages
  • Power-added efficiency (PAE)
  • Ruggedness
  • Second-harmonic termination


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