Design and analysis of stacked power amplifier in series-input and series-output configuration

Ming Fong Lei*, Zuo-Min Tsai , Kun You Lin, Huei Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

The stacked-device power-combining technique is a proven method to increase the output power and load impedance of a power amplifier (PA) simultaneously. The series-input configuration is physically realizable for multicell stacked device configuration in monolithic circuits. The series-input and series-output stack configuration is rigorously analyzed and proven to increase both the input impedance and output impedance simultaneously, easing the matching circuit designs in high PAs. The effects of asymmetry of the input feed and amplifier cells due to distributed effects and process variation on the performance of the stack amplifier are discussed. A four-cell HBT amplifier operating at 56 GHz is demonstrated to validate the circuit concept.

Original languageEnglish
Pages (from-to)2802-2812
Number of pages11
JournalIEEE Transactions on Microwave Theory and Techniques
Volume55
Issue number12
DOIs
StatePublished - 1 Dec 2007

Keywords

  • Monolithic microwave integrated circuit (MMIC) power amplifiers (PAs)
  • Stacked amplifier

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