Abstract

This paper summarizes the advantages of PA linearization via polar modulation and illustrates the necessity for high-performance supply modulators in polar transmitters. Two potential modulator solutions are introduced; both having between 4MHz and 20MHz occupied RF bandwidth and more than 65dB SFDR. These modulators process envelope information for 1625kb/s 8PSK and CDMA IS95 applications in polar PA architectures. The presented circuits and signal processing techniques can be generalized for future modulator designs.

Original languageEnglish (US)
Title of host publicationProceedings of the 2008 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2008
Pages417-420
Number of pages4
DOIs
StatePublished - Sep 22 2008
Event2008 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2008 - Atlanta, GA, United States
Duration: Jun 15 2008Jun 17 2008

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
ISSN (Print)1529-2517

Other

Other2008 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2008
CountryUnited States
CityAtlanta, GA
Period6/15/086/17/08

Keywords

  • Delta-modulator
  • Linear regulator
  • Polar modulation
  • Power amplifiers
  • Supply modulator
  • Switching amplifiers

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Kitehen, J., Chu, C., Kiaei, S., & Bakkaloglu, B. (2008). Supply modulators for RF polar transmitters. In Proceedings of the 2008 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2008 (pp. 417-420). [4561467] (Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium). https://doi.org/10.1109/RFIC.2008.4561467