On the Spectral Regrowth in Polar Transmitters

The envelope elimination and restoration (EER) or so called polar transmission concept proposes significant power efficiency increase for the power amplifier (PA). Up to now no products or prototypes have been published, which are able to handle complex and wideband modulation standards like WCDMA,...

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Bibliographic Details
Main Authors: Strasser, G., Lindner, B., Maurer, L., Hueber, G., Springer, A.
Format: Conference Proceeding
Language:English
Subjects:
Broadband amplifiers
Design engineering
EER
GSM
Multiaccess communication
Phase modulation
Polar-Transmitter
Power amplifiers
Power engineering and energy
Power generation
Transmitters
UMTS
WCDMA
Wideband
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Description
Summary:The envelope elimination and restoration (EER) or so called polar transmission concept proposes significant power efficiency increase for the power amplifier (PA). Up to now no products or prototypes have been published, which are able to handle complex and wideband modulation standards like WCDMA, and concurrently fulfill the spectrum emission mask completely. This paper shows the background, why polar modulation causes spectral regrowth, and why it is not possible to overcome this by simple filtering
ISSN:0149-645X
DOI:10.1109/MWSYM.2006.249770