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A highly efficient class-F power amplifier for wideband linear power amplifier applications

✍ Scribed by Jangheon Kim; Junghwan Moon; Sungchul Hong; Bumman Kim

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

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✦ Synopsis

Abstract

In this letter, a highly efficient class‐F power amplifier (PA) is developed as a new main block of the wideband base‐station linear power amplifier. The class‐F PA is implemented using Eudyna EGN010MK GaN HEMT with a 10‐W peak envelop power. The nonlinearity and memory effects of class‐F PA are explored to apply the wideband application. The maximum power‐added efficiency of the implemented PA is 68% at a saturated output power of 40 dBm for the 2.14‐GHz CW signal. The PA delivers a good efficiency of 35% at an average output power of 32.3 dBm for wide‐band code division multiple access 3FA signal with 15‐MHz bandwidth, and the linearity can be improved to about −48 dBc using the digital feedback predistortion linearization technique. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2323–2326, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24631

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