A practical scheme for envelope delta-sigma modulated (EDSM) microwave power amplifier
✍ Scribed by Alexandre Dupuy; Yuanxun Ethan Wang
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 445 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
A delta‐sigma modulated Class‐E power amplifier is proposed and experimentally developed for high‐efficiency linear applications. The essential idea is based on the envelope delta‐sigma modulation (EDSM), which combines the Kahn technique, envelope elimination and restoration (EER), with the Delta‐Sigma modulated‐amplifier concept. The scheme increases the efficiency of the circuit by digitalizing the envelope of the signal instead of the original RF signal. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 491–495, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20512