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A hybrid Cartesian loop and envelope modulated PA linear transmitter architecture

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publication14th IEEE Personal, Indoor and Mobile Radio Communications, 2003 (PIMRC 2003)
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Pages2721 - 2725
Number of pages5
ISBN (Print)0780378229
StatePublished - Sep 2003
Event14th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) - Beijing, China


Conference14th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Period1/09/03 → …


A high efficiency and linearity PA solution is presented based on hybrid linearisation schemes that employ complementary techniques to overcome the weakness (or constraints) of either method on its own. In particular, the high linearity of Cartesian loop is combined with the high efficiency of envelope elimination and restoration (EER). The results of a prototype hybrid linearised PA built using digital generation of the phase and amplitude signals for the EER amplifier, and utilizing a digital Cartesian feedback loop are presented. Limitations of the amplitude modulator on system performance are demonstrated using PWM and delta-modulated switching amplifiers

Additional information

Rose publication type: Conference contribution Sponsorship: Thanks go to Tait Electronics Ltd whom sponsored Steve Mann to do this work through Bristol University Terms of use: Copyright © 2003 IEEE. Reprinted from Proceedings of IEEE 14th Personal, Indoor and Mobile Radio Communications, 2003. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it

    Research areas

  • Cartesian Loop, EER, linearization, hybrid


14th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

Duration1 Sep 2003 → …

Event: Conference

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