Low-noise GaInP/GaAs HBT wideband dual feedback amplifiers using Kukielka and Meyer topologies

Jin Siang Syu, Tzung Han Wu, Chin-Chun Meng, Guo Wei Huang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

GaInP/GaAs HBT inductorless wideband amplifiers using shunt-series shunt-shunt dual-feedback topology (Kukielka topology) and shunt-series series-shunt dual-feedback topology (Meyer topology) are demonstrated in this article. Three amounts of feedback are applied on each topology. At the high-gain mode, the Kukielka/Meyer wideband amplifier achieves the small-signal power gain of 30/27 dB with the 3-dB bandwidth of 6 GHz at a 5 V supply. The noise figure of both amplifiers is lower than 3 dB within 6 GHz. To increase the amount of feedback widens the bandwidth at the cost of power gain and noise figure degradation.

Original languageEnglish
Pages (from-to)1486-1489
Number of pages4
JournalMicrowave and Optical Technology Letters
Volume52
Issue number7
DOIs
StatePublished - 1 Jul 2010

Keywords

  • Feedback amplifier
  • GaInP/GaAs HBT
  • Kukielka
  • Meyer
  • Wideband amplifier

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