A switch-mode regulator and a class-AB buffer in parallel function as a PA supply modulator and achieve 10MHz bandwidth and 2mV ripple. The resulting modulator is suitable for CDMA applications. High-frequency switch-mode regulator ripple is cancelled by a rail-to-rail class-AB amplifier. The combined regulator tracks the input signal envelope with less than 0.2% error and achieves a maximum efficiency of 82% with a bandwidth of 10MHz.

Original languageEnglish (US)
Title of host publication2008 IEEE International Solid State Circuits Conference - Digest of Technical Papers, ISSCC
StatePublished - 2008
Event2008 IEEE International Solid State Circuits Conference, ISSCC - San Francisco, CA, United States
Duration: Feb 3 2008Feb 7 2008

Publication series

NameDigest of Technical Papers - IEEE International Solid-State Circuits Conference
ISSN (Print)0193-6530


Other2008 IEEE International Solid State Circuits Conference, ISSCC
CountryUnited States
CitySan Francisco, CA

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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