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A highly linear and efficient two-stage GaN HEMT asymmetrical Doherty amplifier for WCDMA applications

✍ Scribed by Yong-Sub Lee; Mun-Woo Lee; Yoon-Ha Jeong

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
438 KB
Volume
51
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

In this article, we propose a highly linear and efficient two‐stage GaN HEMT asymmetrical Doherty power amplifier (ADPA) for WCDMA applications. The first‐stage driving DPA not only improves the linearity as the predistortion circuit but also reduces the power consumption in the driving stage. The second‐stage main ADPA is optimized to achieve high efficiency at a 10‐dB back‐off power. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1464–1467, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24387

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