Abstract
This paper reports the design of a class-E envelope elimination and restoration (EER) based amplifier for a wideband code division multiple access handset application that attains 60% power-added efficiency at peak power output. Emphasis is placed on the envelope modulator that employs a novel split-frequency approach in order to attain an efficiency of 80% for this part of the system. In contrast to standard EER systems, the carrier is not amplitude limited, but rather predistorted to maintain both linearity and power efficiency. Performance in terms of efficiency, spectral output, and error vector magnitude is reported.
| Translated title of the contribution | A 60% PAE WCDMA handset transmitter amplifier |
|---|---|
| Original language | English |
| Pages (from-to) | 2368 - 2377 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Microwave Theory and Techniques |
| Volume | 57 |
| Issue number | 10, part 1 |
| DOIs | |
| Publication status | Published - Oct 2009 |
Bibliographical note
Publisher: IEEERose publication type: Journal article
Terms of use: Copyright © 2009 IEEE. Reprinted from IEEE Transactions on Microwave Theory and Techniques.
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Keywords
- amplifier distortion
- envelope elimination and restoration (EER)
- mobile communications