## Abstract This letter presents a new technique to enhance the overall efficiency of a two‐stage envelope tracking (ET) power amplifier (PA). Because of heavy gain compression, ET amplifiers can suffer from inefficient driver stages. By reducing the supply voltage of the driver amplifier, its effi
New driver for high-efficiency switching RF power amplifiers
✍ Scribed by Francisco Javier Ortega-González
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 168 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
This paper describes a new driver circuit for high‐efficiency RF switching power amplifiers (class E, class D) based on a small‐area driver transistor, intrinsic input capacitances of the output‐power transistor, and a shaping network. The driver operation is based on class‐E principles. Among the main benefits of this new driver are high efficiency, very low‐bias voltage, and circuit simplicity. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 370–372, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20472
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